From 924b21f5242a4892db604e756e3e1c6936fd6ada Mon Sep 17 00:00:00 2001 From: Miraty Date: Sun, 31 Jan 2021 23:40:00 +0100 Subject: [PATCH] Fix static-compress (absolute path) and remove lesserphp dir --- bibli/lesserphp/LICENSE | 661 ------ bibli/lesserphp/README.md | 97 - bibli/lesserphp/docs/docs.md | 1400 ------------ bibli/lesserphp/lessc.inc.php | 4019 --------------------------------- compil.php | 2 +- 5 files changed, 1 insertion(+), 6178 deletions(-) delete mode 100755 bibli/lesserphp/LICENSE delete mode 100755 bibli/lesserphp/README.md delete mode 100755 bibli/lesserphp/docs/docs.md delete mode 100755 bibli/lesserphp/lessc.inc.php diff --git a/bibli/lesserphp/LICENSE b/bibli/lesserphp/LICENSE deleted file mode 100755 index 5290202..0000000 --- a/bibli/lesserphp/LICENSE +++ /dev/null @@ -1,661 +0,0 @@ -For ease of distribution, lessphp 0.5.1 is under a dual license. -You are free to pick which one suits your needs. - - - - -MIT LICENSE - - - - -Copyright (c) 2013 - 2015 Leaf Corcoran, http://leafo.net/lessphp -Copyright (c) 2016 - Marcus Schwarz, https://www.maswaba.de - -Permission is hereby granted, free of charge, to any person obtaining -a copy of this software and associated documentation files (the -"Software"), to deal in the Software without restriction, including -without limitation the rights to use, copy, modify, merge, publish, -distribute, sublicense, and/or sell copies of the Software, and to -permit persons to whom the Software is furnished to do so, subject to -the following conditions: - -The above copyright notice and this permission notice shall be -included in all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, -EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND -NONINFRINGEMENT. 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Interpretation of Sections 15 and 16. - - If the disclaimer of warranty and limitation of liability provided -above cannot be given local legal effect according to their terms, -reviewing courts shall apply local law that most closely approximates -an absolute waiver of all civil liability in connection with the -Program, unless a warranty or assumption of liability accompanies a -copy of the Program in return for a fee. - diff --git a/bibli/lesserphp/README.md b/bibli/lesserphp/README.md deleted file mode 100755 index 8c26ab1..0000000 --- a/bibli/lesserphp/README.md +++ /dev/null @@ -1,97 +0,0 @@ -[![Build Status](https://travis-ci.org/MarcusSchwarz/lesserphp.svg)](https://travis-ci.org/MarcusSchwarz/lesserphp) - -# lesserphp v0.5.4 -### - -`lesserphp` is a compiler for LESS written in PHP. It is based on lessphp bei leafo. -The documentation is great, -so check it out: . - -Here's a quick tutorial: - -### How to use in your PHP project - -The only file required is `lessc.inc.php`, so copy that to your include directory. - -The typical flow of **lesserphp** is to create a new instance of `lessc`, -configure it how you like, then tell it to compile something using one built in -compile methods. - -The `compile` method compiles a string of LESS code to CSS. - -```php -compile(".block { padding: 3 + 4px }"); -``` - -The `compileFile` method reads and compiles a file. It will either return the -result or write it to the path specified by an optional second argument. - -```php -compileFile("input.less"); -``` - -The `checkedCompile` method is like `compileFile`, but it only compiles if the output -file doesn't exist or it's older than the input file: - -```php -checkedCompile("input.less", "output.css"); -``` - -If there any problem compiling your code, an exception is thrown with a helpful message: - -```php -compile("invalid LESS } {"); -} catch (\Exception $e) { - echo "fatal error: " . $e->getMessage(); -} -``` - -The `lessc` object can be configured through an assortment of instance methods. -Some possible configuration options include [changing the output format][1], -[setting variables from PHP][2], and [controlling the preservation of -comments][3], writing [custom functions][4] and much more. It's all described -in [the documentation][0]. - - - [0]: http://leafo.net/lessphp/docs/ - [1]: http://leafo.net/lessphp/docs/#output_formatting - [2]: http://leafo.net/lessphp/docs/#setting_variables_from_php - [3]: http://leafo.net/lessphp/docs/#preserving_comments - [4]: http://leafo.net/lessphp/docs/#custom_functions - - -### How to use from the command line - -An additional script has been included to use the compiler from the command -line. In the simplest invocation, you specify an input file and the compiled -css is written to standard out: - - $ plessc input.less > output.css - -Using the -r flag, you can specify LESS code directly as an argument or, if -the argument is left off, from standard in: - - $ plessc -r "my less code here" - -Finally, by using the -w flag you can watch a specified input file and have it -compile as needed to the output file: - - $ plessc -w input-file output-file - -Errors from watch mode are written to standard out. - -The -f flag sets the [output formatter][1]. For example, to compress the -output run this: - - $ plessc -f=compressed myfile.less - -For more help, run `plessc --help` - diff --git a/bibli/lesserphp/docs/docs.md b/bibli/lesserphp/docs/docs.md deleted file mode 100755 index e25c877..0000000 --- a/bibli/lesserphp/docs/docs.md +++ /dev/null @@ -1,1400 +0,0 @@ - title: v0.5.1 documentation - link_to_home: true --- - -

Documentation v0.5.1

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$index
- -**lesserphp** is a compiler that generates CSS from a superset language which -adds a collection of convenient features often seen in other languages. All CSS -is compatible with LESS, so you can start using new features with your existing CSS. - -It is designed to be compatible with [less.js](http://lesscss.org), and suitable -as a drop in replacement for PHP projects. - -## Getting Started - -The homepage for **lesserphp** can be found at [http://leafo.net/lessphp/][1]. - -You can follow development at the project's [GitHub][2]. - -Including **lesserphp** in your project is as simple as dropping the single -include file into your code base and running the appropriate compile method as -described in the [PHP Interface](#php_interface). - - [1]: http://leafo.net/lessphp "lessphp homepage" - [2]: https://github.com/MarcusSchwarz/lesserphp "lesserphp GitHub page" - -## Installation - -**lesserphp** is distributed entirely in a single stand-alone file. Download the -latest version from [GitHub][2]. - -Development versions can also be downloading from GitHub. - -Place `lessphp.inc.php` in a location available to your PHP scripts, and -include it. That's it! you're ready to begin. - -## The Language - -**lesserphp** is very easy to learn because it generally functions how you would -expect it to. If you feel something is challenging or missing, feel free to -open an issue on the [bug tracker](https://github.com/MarcusSchwarz/lesserphp/issues). - -It is also easy to learn because any standards-compliant CSS code is valid LESS -code. You are free to gradually enhance your existing CSS code base with LESS -features without having to worry about rewriting anything. - -The following is a description of the new languages features provided by LESS. - -### Line Comments - -Simple but very useful; line comments are started with `//`: - - ```less - // this is a comment - body { - color: red; // as is this - /* block comments still work also */ - } - ``` - -### Variables - -Variables are identified with a name that starts with `@`. To declare a -variable, you create an appropriately named CSS property and assign it a value: - - ```less - @family: "verdana"; - @color: red; - body { - @mycolor: red; - font-family: @family; - color: @color; - border-bottom: 1px solid @color; - } - ``` - -Variable declarations will not appear in the output. Variables can be declared -in the outer most scope of the file, or anywhere else a CSS property may -appear. They can hold any CSS property value. - -Variables are only visible for use from their current scope, or any enclosed -scopes. - -If you have a string or keyword in a variable, you can reference another -variable by that name by repeating the `@`: - - ```less - @value: 20px; - @value_name: "value"; - - width: @@value_name; - ``` - -### Expressions - -Expressions let you combine values and variables in meaningful ways. For -example you can add to a color to make it a different shade. Or divide up the -width of your layout logically. You can even concatenate strings. - -Use the mathematical operators to evaluate an expression: - - ```less - @width: 960px; - .nav { - width: @width / 3; - color: #001 + #abc; - } - .body { - width: 2 * @width / 3; - font-family: "hel" + "vetica"; - } - ``` - -Parentheses can be used to control the order of evaluation. They can also be -used to force an evaluation for cases where CSS's syntax makes the expression -ambiguous. - -The following property will produce two numbers, instead of doing the -subtraction: - - ```less - margin: 10px -5px; - ``` - -To force the subtraction: - - ```less - margin: (10px -5px); - ``` - -It is also safe to surround mathematical operators by spaces to ensure that -they are evaluated: - - ```less - margin: 10px - 5px; - ``` - -Division has a special quirk. There are certain CSS properties that use the `/` -operator as part of their value's syntax. Namely, the [font][4] shorthand and -[border-radius][3]. - - [3]: https://developer.mozilla.org/en/CSS/border-radius - [4]: https://developer.mozilla.org/en/CSS/font - - -Thus, **lessphp** will ignore any division in these properties unless it is -wrapped in parentheses. For example, no division will take place here: - - ```less - .font { - font: 20px/80px "Times New Roman"; - } - ``` - -In order to force division we must wrap the expression in parentheses: - - ```less - .font { - font: (20px/80px) "Times New Roman"; - } - ``` - -If you want to write a literal `/` expression without dividing in another -property (or a variable), you can use [string unquoting](#string_unquoting): - - ```less - .var { - @size: ~"20px/80px"; - font: @size sans-serif; - } - ``` - -### Nested Blocks - -By nesting blocks we can build up a chain of CSS selectors through scope -instead of repeating them. In addition to reducing repetition, this also helps -logically organize the structure of our CSS. - - ```less - ol.list { - li.special { - border: 1px solid red; - } - - li.plain { - font-weight: bold; - } - } - ``` - - -This will produce two blocks, a `ol.list li.special` and `ol.list li.plain`. - -Blocks can be nested as deep as required in order to build a hierarchy of -relationships. - -The `&` operator can be used in a selector to represent its parent's selector. -If the `&` operator is used, then the default action of appending the parent to -the front of the child selector separated by space is not performed. - - ```less - b { - a & { - color: red; - } - - // the following have the same effect - - & i { - color: blue; - } - - i { - color: blue; - } - } - ``` - - -Because the `&` operator respects the whitespace around it, we can use it to -control how the child blocks are joined. Consider the differences between the -following: - - ```less - div { - .child-class { color: purple; } - - &.isa-class { color: green; } - - #child-id { height: 200px; } - - &#div-id { height: 400px; } - - &:hover { color: red; } - - :link { color: blue; } - } - ``` - -The `&` operator also works with [mixins](#mixins), which produces interesting results: - - ```less - .within_box_style() { - .box & { - color: blue; - } - } - - #menu { - .within_box_style; - } - ``` - -### Mixins - -Any block can be mixed in just by naming it: - - ```less - .mymixin { - color: blue; - border: 1px solid red; - - .special { - font-weight: bold; - } - } - - - h1 { - font-size: 200px; - .mymixin; - } - ``` - -All properties and child blocks are mixed in. - -Mixins can be made parametric, meaning they can take arguments, in order to -enhance their utility. A parametric mixin all by itself is not outputted when -compiled. Its properties will only appear when mixed into another block. - -The canonical example is to create a rounded corners mixin that works across -browsers: - - ```less - .rounded-corners(@radius: 5px) { - border-radius: @radius; - -webkit-border-radius: @radius; - -moz-border-radius: @radius; - } - - .header { - .rounded-corners(); - } - - .info { - background: red; - .rounded-corners(14px); - } - ``` - -If you have a mixin that doesn't have any arguments, but you don't want it to -show up in the output, give it a blank argument list: - - ```less - .secret() { - font-size: 6000px; - } - - .div { - .secret; - } - ``` - -If the mixin doesn't need any arguments, you can leave off the parentheses when -mixing it in, as seen above. - -You can also mixin a block that is nested inside other blocks. You can think of -the outer block as a way of making a scope for your mixins. You just list the -names of the mixins separated by spaces, which describes the path to the mixin -you want to include. Optionally you can separate them by `>`. - - ```less - .my_scope { - .some_color { - color: red; - .inner_block { - text-decoration: underline; - } - } - .bold { - font-weight: bold; - color: blue; - } - } - - .a_block { - .my_scope .some_color; - .my_scope .some_color .inner_block; - } - - .another_block { - // the alternative syntax - .my_scope > .bold; - } - ``` - - -#### Mixin Arguments - -When declaring a mixin you can specify default values for each argument. Any -argument left out will be given the default value specified. Here's the -syntax: - -```less -.mix(@color: red, @height: 20px, @pad: 12px) { - border: 1px solid @color; - height: @height - @pad; - padding: @pad; -} - -.default1 { - .mix(); -} - -.default2 { - .mix(blue); -} - -.default3 { - .mix(blue, 40px, 5px); -} -``` - -Additionally, you can also call a mixin using the argument names, this is -useful if you want to replace a specific argument while having all the others -take the default regardless of what position the argument appears in. The -syntax looks something like this: - - -```lessbasic -div { - .my_mixin(@paddding: 4px); // @color and @height get default values - .my_mixin(@paddding: 4px, @height: 50px); // you can specify them in any order -} -``` - -You can also combine the ordered arguments with the named ones: - -```lessbasic -div { - // @color is blue, @padding is 4px, @height is default - .my_mixin(blue, @padding: 4px); -} -``` - -Mixin arguments can be delimited with either a `,` or `;`, but only one can be -active at once. This means that each argument is separated by either `,` or -`;`. By default `,` is the delimiter, in all the above examples we used a `,`. - -A problem arises though, sometimes CSS value lists are made up with commas. In -order to be able to pass a comma separated list literal we need to use `;` as -the delimiter. (You don't need to worry about this if your list is stored in a -variable) - -If a `;` appears anywhere in the argument list, then it will be used as the -argument delimiter, and all commas we be used as part of the argument values. - -Here's a basic example: - -```less -.fancy_mixin(@box_shadow, @color: blue) { - border: 1px solid @color; - box-shadow: @box_shadow; -} - - -div { - // two arguments passed separated by ; - .fancy_mixin(2px 2px, -2px -2px; red); -} - -pre { - // one argument passed, ends in ; - .fancy_mixin(inset 4px 4px, -2px 2px;); -} - -``` - -If we only want to pass a single comma separated value we still need to use -`;`, to do this we stick it on the end as demonstrated above. - - -#### `@arguments` Variable - -Within an mixin there is a special variable named `@arguments` that contains -all the arguments passed to the mixin along with any remaining arguments that -have default values. The value of the variable has all the values separated by -spaces. - -This useful for quickly assigning all the arguments: - - ```less - .box-shadow(@x, @y, @blur, @color) { - box-shadow: @arguments; - -webkit-box-shadow: @arguments; - -moz-box-shadow: @arguments; - } - .menu { - .box-shadow(1px, 1px, 5px, #aaa); - } - ``` - -In addition to the arguments passed to the mixin, `@arguments` will also include -remaining default values assigned by the mixin: - - - ```less - .border-mixin(@width, @style: solid, @color: black) { - border: @arguments; - } - - pre { - .border-mixin(4px, dotted); - } - - ``` - - -#### Pattern Matching - -When you *mix in* a mixin, all the available mixins of that name in the current -scope are checked to see if they match based on what was passed to the mixin -and how it was declared. - -The simplest case is matching by number of arguments. Only the mixins that -match the number of arguments passed in are used. - - ```less - .simple() { // matches no arguments - height: 10px; - } - - .simple(@a, @b) { // matches two arguments - color: red; - } - - .simple(@a) { // matches one argument - color: blue; - } - - div { - .simple(10); - } - - span { - .simple(10, 20); - } - ``` - -Whether an argument has default values is also taken into account when matching -based on number of arguments: - - ```less - // matches one or two arguments - .hello(@a, @b: blue) { - height: @a; - color: @b; - } - - .hello(@a, @b) { // matches only two - width: @a; - border-color: @b; - } - - .hello(@a) { // matches only one - padding: 1em; - } - - div { - .hello(10px); - } - - pre { - .hello(10px, yellow); - } - ``` - -Additionally, a *vararg* value can be used to further control how things are -matched. A mixin's argument list can optionally end in the special argument -named `...`. The `...` may match any number of arguments, including 0. - - ```less - // this will match any number of arguments - .first(...) { - color: blue; - } - - // matches at least 1 argument - .second(@arg, ...) { - height: 200px + @arg; - } - - div { .first("some", "args"); } - pre { .second(10px); } - ``` - -If you want to capture the values that get captured by the *vararg* you can -give it a variable name by putting it directly before the `...`. This variable -must be the last argument defined. It's value is just like the special -[`@arguments` variable](#arguments_variable), a space separated list. - - - ```less - .hello(@first, @rest...) { - color: @first; - text-shadow: @rest; - } - - span { - .hello(red, 1px, 1px, 0px, white); - } - - ``` - -Another way of controlling whether a mixin matches is by specifying a value in -place of an argument name when declaring the mixin: - - ```less - .style(old, @size) { - font: @size serif; - } - - .style(new, @size) { - font: @size sans-serif; - } - - .style(@_, @size) { - letter-spacing: floor(@size / 6px); - } - - em { - @switch: old; - .style(@switch, 15px); - } - ``` - -Notice that two of the three mixins were matched. The mixin with a matching -first argument, and the generic mixin that matches two arguments. It's common -to use `@_` as the name of a variable we intend to not use. It has no special -meaning to LESS, just to the reader of the code. - -#### Guards - -Another way of restricting when a mixin is mixed in is by using guards. A guard -is a special expression that is associated with a mixin declaration that is -evaluated during the mixin process. It must evaluate to true before the mixin -can be used. - -We use the `when` keyword to begin describing a list of guard expressions. - -Here's a simple example: - - ```less - .guarded(@arg) when (@arg = hello) { - color: blue; - } - - div { - .guarded(hello); // match - } - - span { - .guarded(world); // no match - } - ``` -Only the `div`'s mixin will match in this case, because the guard expression -requires that `@arg` is equal to `hello`. - -We can include many different guard expressions by separating them by commas. -Only one of them needs to match to trigger the mixin: - - ```less - .x(@a, @b) when (@a = hello), (@b = world) { - width: 960px; - } - - div { - .x(hello, bar); // match - } - - span { - .x(foo, world); // match - } - - pre { - .x(foo, bar); // no match - } - ``` - -Instead of a comma, we can use `and` keyword to make it so all of the guards -must match in order to trigger the mixin. `and` has higher precedence than the -comma. - - ```less - .y(@a, @b) when (@a = hello) and (@b = world) { - height: 600px; - } - - div { - .y(hello, world); // match - } - - span { - .y(hello, bar); // no match - } - ``` - -Commas and `and`s can be mixed and matched. - -You can also negate a guard expression by using `not` in from of the parentheses: - - ```less - .x(@a) when not (@a = hello) { - color: blue; - } - - div { - .x(hello); // no match - } - ``` - -The `=` operator is used to check equality between any two values. For numbers -the following comparison operators are also defined: - -`<`, `>`, `=<`, `>=` - -There is also a collection of predicate functions that can be used to test the -type of a value. - -These are `isnumber`, `iscolor`, `iskeyword`, `isstring`, `ispixel`, -`ispercentage` and `isem`. - - ```less - .mix(@a) when (ispercentage(@a)) { - height: 500px * @a; - } - .mix(@a) when (ispixel(@a)) { - height: @a; - } - - div.a { - .mix(50%); - } - - div.a { - .mix(350px); - } - ``` - -#### !important - -If you want to apply the `!important` suffix to every property when mixing in a -mixin, just append `!important` to the end of the call to the mixin: - - ```less - .make_bright { - color: red; - font-weight: bold; - } - - .color { - color: green; - } - - body { - .make_bright() !important; - .color(); - } - - ``` - -### Selector Expressions - -Sometimes we want to dynamically generate the selector of a block based on some -variable or expression. We can do this by using *selector expressions*. Selector -expressions are CSS selectors that are evaluated in the current scope before -being written out. - -A simple example is a mixin that dynamically creates a selector named after the -mixin's argument: - - ```less - .create-selector(@name) { - @{name} { - color: red; - } - } - - .create-selector(hello); - .create-selector(world); - ``` - -The string interpolation syntax works inside of selectors, letting you insert varaibles. - -Here's an interesting example adapted from Twitter Bootstrap. A couple advanced -things are going on. We are using [Guards](#guards) along with a recursive -mixin to work like a loop to generate a series of CSS blocks. - - - ```less - // create our recursive mixin: - .spanX (@index) when (@index > 0) { - .span@{index} { - width: @index * 100px; - } - .spanX(@index - 1); - } - .spanX (0) {} - - // mix it into the global scopee: - .spanX(4); - ``` - -### Import - -Multiple LESS files can be compiled into a single CSS file by using the -`@import` statement. Be careful, the LESS import statement shares syntax with -the CSS import statement. If the file being imported ends in a `.less` -extension, or no extension, then it is treated as a LESS import. Otherwise it -is left alone and outputted directly: - - ```lessbasic - // my_file.less - .some-mixin(@height) { - height: @height; - } - - // main.less - @import "main.less" // will import the file if it can be found - @import "main.css" // will be left alone - - body { - .some-mixin(400px); - } - ``` - -All of the following lines are valid ways to import the same file: - - ```lessbasic - @import "file"; - @import 'file.less'; - @import url("file"); - @import url('file'); - @import url(file); - ``` - -When importing, the `importDir` is searched for files. This can be configured, -see [PHP Interface](#php_interface). - -A file is only imported once. If you try to include the same file multiple -times all the import statements after the first produce no output. - -### String Interpolation - -String interpolation is a convenient way to insert the value of a variable -right into a string literal. Given some variable named `@var_name`, you just -need to write it as `@{var_name}` from within the string to have its value -inserted: - - ```less - @symbol: ">"; - h1:before { - content: "@{symbol}: "; - } - - h2:before { - content: "@{symbol}@{symbol}: "; - } - ``` - -There are two kinds of strings, implicit and explicit strings. Explicit strings -are wrapped by double quotes, `"hello I am a string"`, or single quotes `'I am -another string'`. Implicit strings only appear when using `url()`. The text -between the parentheses is considered a string and thus string interpolation is -possible: - - ```less - @path: "files/"; - body { - background: url(@{path}my_background.png); - } - ``` - -### String Format Function - -The `%` function can be used to insert values into strings using a *format -string*. It works similar to `printf` seen in other languages. It has the -same purpose as string interpolation above, but gives explicit control over -the output format. - - ```less - @symbol: ">"; - h1:before { - content: %("%s: ", @symbol); - } - ``` - -The `%` function takes as its first argument the format string, following any -number of addition arguments that are inserted in place of the format -directives. - -A format directive starts with a `%` and is followed by a single character that -is either `a`, `d`, or `s`: - - ```less - strings: %("%a %d %s %a", hi, 1, 'ok', 'cool'); - ``` - -`%a` and `%d` format the value the same way: they compile the argument to its -CSS value and insert it directly. When used with a string, the quotes are -included in the output. This typically isn't what we want, so we have the `%s` -format directive which strips quotes from strings before inserting them. - -The `%d` directive functions the same as `%a`, but is typically used for numbers -assuming the output format of numbers might change in the future. - -### String Unquoting - -Sometimes you will need to write proprietary CSS syntax that is unable to be -parsed. As a workaround you can place the code into a string and unquote it. -Unquoting is the process of outputting a string without its surrounding quotes. -There are two ways to unquote a string. - -The `~` operator in front of a string will unquote that string: - - ```less - .class { - // a made up, but problematic vendor specific CSS - filter: ~"Microsoft.AlphaImage(src='image.png')"; - } - ``` - -If you are working with other types, such as variables, there is a built in -function that let's you unquote any value. It is called `e`. - - ```less - @color: "red"; - .class { - color: e(@color); - } - ``` - -### Built In Functions - -**lesserphp** has a collection of built in functions: - -* `e(str)` -- returns a string without the surrounding quotes. - See [String Unquoting](#string_unquoting) - -* `floor(number)` -- returns the floor of a numerical input -* `round(number, [precision])` -- returns the rounded value of numerical input with optional precision - -* `lighten(color, percent)` -- lightens `color` by `percent` and returns it -* `darken(color, percent)` -- darkens `color` by `percent` and returns it - -* `saturate(color, percent)` -- saturates `color` by `percent` and returns it -* `desaturate(color, percent)` -- desaturates `color` by `percent` and returns it - -* `fadein(color, percent)` -- makes `color` less transparent by `percent` and returns it -* `fadeout(color, percent)` -- makes `color` more transparent by `percent` and returns it - -* `spin(color, amount)` -- returns a color with `amount` degrees added to hue - -* `fade(color, amount)` -- returns a color with the alpha set to `amount` - -* `hue(color)` -- returns the hue of `color` - -* `saturation(color)` -- returns the saturation of `color` - -* `lightness(color)` -- returns the lightness of `color` - -* `alpha(color)` -- returns the alpha value of `color` or 1.0 if it doesn't have an alpha - -* `percentage(number)` -- converts a floating point number to a percentage, e.g. `0.65` -> `65%` - -* `mix(color1, color1, percent)` -- mixes two colors by percentage where 100% - keeps all of `color1`, and 0% keeps all of `color2`. Will take into account - the alpha of the colors if it exists. See - . - -* `contrast(color, dark, light)` -- if `color` has a lightness value greater - than 50% then `dark` is returned, otherwise return `light`. - -* `extract(list, index)` -- returns the `index`th item from `list`. The list is - `1` indexed, meaning the first item's index is 1, the second is 2, and etc. - -* `pow(base, exp)` -- returns `base` raised to the power of `exp` - -* `pi()` -- returns pi - -* `mod(a,b)` -- returns `a` modulus `b` - -* `tan(a)` -- returns tangent of `a` where `a` is in radians - -* `cos(a)` -- returns cosine of `a` where `a` is in radians - -* `sin(a)` -- returns sine of `a` where `a` is in radians - -* `atan(a)` -- returns arc tangent of `a` - -* `acos(a)` -- returns arc cosine of `a` - -* `asin(a)` -- returns arc sine of `a` - -* `sqrt(a)` -- returns square root of `a` - -* `rgbahex(color)` -- returns a string containing 4 part hex color. - - This is used to convert a CSS color into the hex format that IE's filter - method expects when working with an alpha component. - - ```less - .class { - @start: rgbahex(rgba(25, 34, 23, .5)); - @end: rgbahex(rgba(85, 74, 103, .6)); - // abridged example - -ms-filter: - e("gradient(start=@{start},end=@{end})"); - } - ``` - -## PHP Interface - -When working with **lesserphp** from PHP, the typical flow is to create a new -instance of `lessc`, configure it how you like, then tell it to compile -something using one built in compile methods. - -Methods: - -* [`compile($string)`](#compiling[) -- Compile a string - -* [`compileFile($inFile, [$outFile])`](#compiling) -- Compile a file to another or return it - -* [`checkedCompile($inFile, $outFile)`](#compiling) -- Compile a file only if it's newer - -* [`cachedCompile($cacheOrFile, [$force])`](#compiling_automatically) -- Conditionally compile while tracking imports - -* [`setFormatter($formatterName)`](#output_formatting) -- Change how CSS output looks - -* [`setPreserveComments($keepComments)`](#preserving_comments) -- Change if comments are kept in output - -* [`registerFunction($name, $callable)`](#custom_functions) -- Add a custom function - -* [`unregisterFunction($name)`](#custom_functions) -- Remove a registered function - -* [`setVariables($vars)`](#setting_variables_from_php) -- Set a variable from PHP - -* [`unsetVariable($name)`](#setting_variables_from_php) -- Remove a PHP variable - -* [`setImportDir($dirs)`](#import_directory) -- Set the search path for imports - -* [`addImportDir($dir)`](#import_directory) -- Append directory to search path for imports - - -### Compiling - -The `compile` method compiles a string of LESS code to CSS. - - ```php - compile(".block { padding: 3 + 4px }"); - ``` - -The `compileFile` method reads and compiles a file. It will either return the -result or write it to the path specified by an optional second argument. - - ```php - echo $less->compileFile("input.less"); - ``` - -The `checkedCompile` method is like `compileFile`, but it only compiles if the output -file doesn't exist or it's older than the input file: - - ```php - $less->checkedCompile("input.less", "output.css"); - ``` - -See [Compiling Automatically](#compiling_automatically) for a description of -the more advanced `cachedCompile` method. - -### Output Formatting - -Output formatting controls the indentation of the output CSS. Besides the -default formatter, two additional ones are included and it's also easy to make -your own. - -To use a formatter, the method `setFormatter` is used. Just -pass the name of the formatter: - - ```php - $less = new lessc; - - $less->setFormatter("compressed"); - echo $less->compile("div { color: lighten(blue, 10%) }"); - ``` - -In this example, the `compressed` formatter is used. The formatters are: - - * `lessjs` *(default)* -- Same style used in LESS for JavaScript - - * `compressed` -- Compresses all the unrequired whitespace - - * `classic` -- **lessphp**'s original formatter - -To revert to the default formatter, call `setFormatter` with a value of `null`. - -#### Custom Formatter - -The easiest way to customize the formatter is to create your own instance of an -existing formatter and alter its public properties before passing it off to -**lessphp**. The `setFormatter` method can also take an instance of a -formatter. - -Each of the formatter names corresponds to a class with `lessc_formatter_` -prepended in front of it. Here the classic formatter is customized to use tabs -instead of spaces: - - - ```php - $formatter = new lessc_formatter_classic; - $formatter->indentChar = "\t"; - - $less = new lessc; - $less->setFormatter($formatter); - echo $less->compileFile("myfile.less"); - ``` - -For more information about what can be configured with the formatter consult -the source code. - -### Preserving Comments - -By default, all comments in the source LESS file are stripped when compiling. -You might want to keep the `/* */` comments in the output though. For -example, bundling a license in the file. - -Enable or disable comment preservation by calling `setPreserveComments`: - - ```php - $less = new lessc; - $less->setPreserveComments(true); - echo $less->compile("/* hello! */"); - ``` - -Comments are disabled by default because there is additional overhead, and more -often than not they aren't needed. - - -### Compiling Automatically - -Often, you want to only compile a LESS file only if it has been modified since -last compile. This is very important because compiling is performance intensive -and you should avoid a recompile if it possible. - -The `checkedCompile` compile method will do just that. It will check if the -input file is newer than the output file, or if the output file doesn't exist -yet, and compile only then. - - ```php - $less->checkedCompile("input.less", "output.css"); - ``` - -There's a problem though. `checkedCompile` is very basic, it only checks the -input file's modification time. It is unaware of any files from `@import`. - - -For this reason we also have `cachedCompile`. It's slightly more complex, but -gives us the ability to check changes to all files including those imported. It -takes one argument, either the name of the file we want to compile, or an -existing *cache object*. Its return value is an updated cache object. - -If we don't have a cache object, then we call the function with the name of the -file to get the initial cache object. If we do have a cache object, then we -call the function with it. In both cases, an updated cache object is returned. - -The cache object keeps track of all the files that must be checked in order to -determine if a rebuild is required. - -The cache object is a plain PHP `array`. It stores the last time it compiled in -`$cache["updated"]` and output of the compile in `$cache["compiled"]`. - -Here we demonstrate creating an new cache object, then using it to see if we -have a recompiled version available to be written: - - - ```php - $inputFile = "myfile.less"; - $outputFile = "myfile.css"; - - $less = new lessc; - - // create a new cache object, and compile - $cache = $less->cachedCompile($inputFile); - - file_put_contents($outputFile, $cache["compiled"]); - - // the next time we run, write only if it has updated - $last_updated = $cache["updated"]; - $cache = $less->cachedCompile($cache); - if ($cache["updated"] > $last_updated) { - file_put_contents($outputFile, $cache["compiled"]); - } - - ``` - -In order for the system to fully work, we must save cache object between -requests. Because it's a plain PHP `array`, it's sufficient to -[`serialize`](http://php.net/serialize) it and save it the string somewhere -like a file or in persistent memory. - -An example with saving cache object to a file: - - ```php - function autoCompileLess($inputFile, $outputFile) { - // load the cache - $cacheFile = $inputFile.".cache"; - - if (file_exists($cacheFile)) { - $cache = unserialize(file_get_contents($cacheFile)); - } else { - $cache = $inputFile; - } - - $less = new lessc; - $newCache = $less->cachedCompile($cache); - - if (!is_array($cache) || $newCache["updated"] > $cache["updated"]) { - file_put_contents($cacheFile, serialize($newCache)); - file_put_contents($outputFile, $newCache['compiled']); - } - } - - autoCompileLess('myfile.less', 'myfile.css'); - ``` - -`cachedCompile` method takes an optional second argument, `$force`. Passing in -true will cause the input to always be recompiled. - -### Error Handling - -All of the compile methods will throw an `Exception` if the parsing fails or -there is a compile time error. Compile time errors include things like passing -incorrectly typed values for functions that expect specific things, like the -color manipulation functions. - - ```php - $less = new lessc; - try { - $less->compile("} invalid LESS }}}"); - } catch (Exception $ex) { - echo "lessphp fatal error: ".$ex->getMessage(); - } - ``` -### Setting Variables From PHP - -Before compiling any code you can set initial LESS variables from PHP. The -`setVariables` method lets us do this. It takes an associative array of names -to values. The values must be strings, and will be parsed into correct CSS -values. - - - ```php - $less = new lessc; - - $less->setVariables(array( - "color" => "red", - "base" => "960px" - )); - - echo $less->compile(".magic { color: @color; width: @base - 200; }"); - ``` - -If you need to unset a variable, the `unsetVariable` method is available. It -takes the name of the variable to unset. - - ```php - $less->unsetVariable("color"); - ``` - -Be aware that the value of the variable is a string containing a CSS value. So -if you want to pass a LESS string in, you're going to need two sets of quotes. -One for PHP and one for LESS. - - - ```php - $less->setVariables(array( - "url" => "'http://example.com'" - )); - - echo $less->compile("body { background: url("@{url}/bg.png"); }"); - ``` - -### Import Directory - -When running the `@import` directive, an array of directories called the import -search path is searched through to find the file being asked for. - -By default, when using `compile`, the import search path just contains `""`, -which is equivalent to the current directory of the script. If `compileFile` is -used, then the directory of the file being compiled is used as the starting -import search path. - -Two methods are available for configuring the search path. - -`setImportDir` will overwrite the search path with its argument. If the value -isn't an array it will be converted to one. - - -In this example, `@import "colors";` will look for either -`assets/less/colors.less` or `assets/bootstrap/colors.less` in that order: - - ```php - $less->setImportDir(array("assets/less/", "assets/bootstrap")); - - echo $less->compile('@import "colors";'); - ``` - -`addImportDir` will append a single path to the import search path instead of -overwriting the whole thing. - - ```php - $less->addImportDir("public/stylesheets"); - ``` - -### Custom Functions - -**lesserphp** has a simple extension interface where you can implement user -functions that will be exposed in LESS code during the compile. They can be a -little tricky though because you need to work with the **lesserphp** type system. - -The two methods we are interested in are `registerFunction` and -`unregisterFunction`. `registerFunction` takes two arguments, a name and a -callable value. `unregisterFunction` just takes the name of an existing -function to remove. - -Here's an example that adds a function called `double` that doubles any numeric -argument: - - ```php - registerFunction("double", "lessphp_double"); - - // gives us a width of 800px - echo $less->compile("div { width: double(400px); }"); - ``` - -The second argument to `registerFunction` is any *callable value* that is -understood by [`call_user_func`](http://php.net/call_user_func). - -If we are using PHP 5.3 or above then we are free to pass a function literal -like so: - - ```php - $less->registerFunction("double", function($arg) { - list($type, $value, $unit) = $arg; - return array($type, $value*2, $unit); - }); - ``` - -Now let's talk about the `double` function itself. - -Although a little verbose, the implementation gives us some insight on the type -system. All values in **lesserphp** are stored in an array where the 0th element -is a string representing the type, and the other elements make up the -associated data for that value. - -The best way to get an understanding of the system is to register is dummy -function which does a `var_dump` on the argument. Try passing the function -different values from LESS and see what the results are. - -The return value of the registered function must also be a **lesserphp** type, -but if it is a string or numeric value, it will automatically be coerced into -an appropriate typed value. In our example, we reconstruct the value with our -modifications while making sure that we preserve the original type. - -The instance of **lesserphp** itself is sent to the registered function as the -second argument in addition to the arguments array. - -## Command Line Interface - -**lesserphp** comes with a command line script written in PHP that can be used to -invoke the compiler from the terminal. On Linux and OSX, all you need to do is -place `plessc` and `lessc.inc.php` somewhere in your PATH (or you can run it in -the current directory as well). On windows you'll need a copy of `php.exe` to -run the file. To compile a file, `input.less` to CSS, run: - - ```bash - $ plessc input.less - ``` - -To write to a file, redirect standard out: - - ```bash - $ plessc input.less > output.css - ``` - -To compile code directly on the command line: - - ```bash - $ plessc -r "@color: red; body { color: @color; }" - ``` - -To watch a file for changes, and compile it as needed, use the `-w` flag: - - ```bash - $ plessc -w input-file output-file - ``` - -Errors from watch mode are written to standard out. - - -## License - -Copyright (c) 2012 Leaf Corcoran, - -Permission is hereby granted, free of charge, to any person obtaining -a copy of this software and associated documentation files (the -"Software"), to deal in the Software without restriction, including -without limitation the rights to use, copy, modify, merge, publish, -distribute, sublicense, and/or sell copies of the Software, and to -permit persons to whom the Software is furnished to do so, subject to -the following conditions: - -The above copyright notice and this permission notice shall be -included in all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, -EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND -NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE -LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION -OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION -WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - - -*Also under GPL3 if required, see `LICENSE` file* - diff --git a/bibli/lesserphp/lessc.inc.php b/bibli/lesserphp/lessc.inc.php deleted file mode 100755 index 4764b28..0000000 --- a/bibli/lesserphp/lessc.inc.php +++ /dev/null @@ -1,4019 +0,0 @@ - - * Copyright 2016, Marcus Schwarz - * Licensed under MIT or GPLv3, see LICENSE - */ - - -/** - * The LESS compiler and parser. - * - * Converting LESS to CSS is a three stage process. The incoming file is parsed - * by `lessc_parser` into a syntax tree, then it is compiled into another tree - * representing the CSS structure by `lessc`. The CSS tree is fed into a - * formatter, like `lessc_formatter` which then outputs CSS as a string. - * - * During the first compile, all values are *reduced*, which means that their - * types are brought to the lowest form before being dump as strings. This - * handles math equations, variable dereferences, and the like. - * - * The `parse` function of `lessc` is the entry point. - * - * In summary: - * - * The `lessc` class creates an instance of the parser, feeds it LESS code, - * then transforms the resulting tree to a CSS tree. This class also holds the - * evaluation context, such as all available mixins and variables at any given - * time. - * - * The `lessc_parser` class is only concerned with parsing its input. - * - * The `lessc_formatter` takes a CSS tree, and dumps it to a formatted string, - * handling things like indentation. - */ -class lessc { - static public $VERSION = "v0.5.2"; - - static public $TRUE = array("keyword", "true"); - static public $FALSE = array("keyword", "false"); - - protected $libFunctions = array(); - protected $registeredVars = array(); - protected $preserveComments = false; - - public $vPrefix = '@'; // prefix of abstract properties - public $mPrefix = '$'; // prefix of abstract blocks - public $parentSelector = '&'; - - static public $lengths = array( "px", "m", "cm", "mm", "in", "pt", "pc" ); - static public $times = array( "s", "ms" ); - static public $angles = array( "rad", "deg", "grad", "turn" ); - - static public $lengths_to_base = array( 1, 3779.52755906, 37.79527559, 3.77952756, 96, 1.33333333, 16 ); - public $importDisabled = false; - public $importDir = array(); - - protected $numberPrecision = null; - - protected $allParsedFiles = array(); - - // set to the parser that generated the current line when compiling - // so we know how to create error messages - protected $sourceParser = null; - protected $sourceLoc = null; - - static protected $nextImportId = 0; // uniquely identify imports - - // attempts to find the path of an import url, returns null for css files - protected function findImport($url) { - foreach ((array)$this->importDir as $dir) { - $full = $dir.(substr($dir, -1) != '/' ? '/' : '').$url; - if ($this->fileExists($file = $full.'.less') || $this->fileExists($file = $full)) { - return $file; - } - } - - return null; - } - - protected function fileExists($name) { - return is_file($name); - } - - static public function compressList($items, $delim) { - if (!isset($items[1]) && isset($items[0])) return $items[0]; - else return array('list', $delim, $items); - } - - static public function preg_quote($what) { - return preg_quote($what, '/'); - } - - protected function tryImport($importPath, $parentBlock, $out) { - if ($importPath[0] == "function" && $importPath[1] == "url") { - $importPath = $this->flattenList($importPath[2]); - } - - $str = $this->coerceString($importPath); - if ($str === null) return false; - - $url = $this->compileValue($this->lib_e($str)); - - // don't import if it ends in css - if (substr_compare($url, '.css', -4, 4) === 0) return false; - - $realPath = $this->findImport($url); - - if ($realPath === null) return false; - - if ($this->importDisabled) { - return array(false, "/* import disabled */"); - } - - if (isset($this->allParsedFiles[realpath($realPath)])) { - return array(false, null); - } - - $this->addParsedFile($realPath); - $parser = $this->makeParser($realPath); - $root = $parser->parse(file_get_contents($realPath)); - - // set the parents of all the block props - foreach ($root->props as $prop) { - if ($prop[0] == "block") { - $prop[1]->parent = $parentBlock; - } - } - - // copy mixins into scope, set their parents - // bring blocks from import into current block - // TODO: need to mark the source parser these came from this file - foreach ($root->children as $childName => $child) { - if (isset($parentBlock->children[$childName])) { - $parentBlock->children[$childName] = array_merge( - $parentBlock->children[$childName], - $child); - } else { - $parentBlock->children[$childName] = $child; - } - } - - $pi = pathinfo($realPath); - $dir = $pi["dirname"]; - - list($top, $bottom) = $this->sortProps($root->props, true); - $this->compileImportedProps($top, $parentBlock, $out, $parser, $dir); - - return array(true, $bottom, $parser, $dir); - } - - protected function compileImportedProps($props, $block, $out, $sourceParser, $importDir) { - $oldSourceParser = $this->sourceParser; - - $oldImport = $this->importDir; - - // TODO: this is because the importDir api is stupid - $this->importDir = (array)$this->importDir; - array_unshift($this->importDir, $importDir); - - foreach ($props as $prop) { - $this->compileProp($prop, $block, $out); - } - - $this->importDir = $oldImport; - $this->sourceParser = $oldSourceParser; - } - - /** - * Recursively compiles a block. - * - * A block is analogous to a CSS block in most cases. A single LESS document - * is encapsulated in a block when parsed, but it does not have parent tags - * so all of it's children appear on the root level when compiled. - * - * Blocks are made up of props and children. - * - * Props are property instructions, array tuples which describe an action - * to be taken, eg. write a property, set a variable, mixin a block. - * - * The children of a block are just all the blocks that are defined within. - * This is used to look up mixins when performing a mixin. - * - * Compiling the block involves pushing a fresh environment on the stack, - * and iterating through the props, compiling each one. - * - * See lessc::compileProp() - * - */ - protected function compileBlock($block) { - switch ($block->type) { - case "root": - $this->compileRoot($block); - break; - case null: - $this->compileCSSBlock($block); - break; - case "media": - $this->compileMedia($block); - break; - case "directive": - $name = "@" . $block->name; - if (!empty($block->value)) { - $name .= " " . $this->compileValue($this->reduce($block->value)); - } - - $this->compileNestedBlock($block, array($name)); - break; - default: - $block->parser->throwError("unknown block type: $block->type\n", $block->count); - } - } - - protected function compileCSSBlock($block) { - $env = $this->pushEnv(); - - $selectors = $this->compileSelectors($block->tags); - $env->selectors = $this->multiplySelectors($selectors); - $out = $this->makeOutputBlock(null, $env->selectors); - - $this->scope->children[] = $out; - $this->compileProps($block, $out); - - $block->scope = $env; // mixins carry scope with them! - $this->popEnv(); - } - - protected function compileMedia($media) { - $env = $this->pushEnv($media); - $parentScope = $this->mediaParent($this->scope); - - $query = $this->compileMediaQuery($this->multiplyMedia($env)); - - $this->scope = $this->makeOutputBlock($media->type, array($query)); - $parentScope->children[] = $this->scope; - - $this->compileProps($media, $this->scope); - - if (count($this->scope->lines) > 0) { - $orphanSelelectors = $this->findClosestSelectors(); - if (!is_null($orphanSelelectors)) { - $orphan = $this->makeOutputBlock(null, $orphanSelelectors); - $orphan->lines = $this->scope->lines; - array_unshift($this->scope->children, $orphan); - $this->scope->lines = array(); - } - } - - $this->scope = $this->scope->parent; - $this->popEnv(); - } - - protected function mediaParent($scope) { - while (!empty($scope->parent)) { - if (!empty($scope->type) && $scope->type != "media") { - break; - } - $scope = $scope->parent; - } - - return $scope; - } - - protected function compileNestedBlock($block, $selectors) { - $this->pushEnv($block); - $this->scope = $this->makeOutputBlock($block->type, $selectors); - $this->scope->parent->children[] = $this->scope; - - $this->compileProps($block, $this->scope); - - $this->scope = $this->scope->parent; - $this->popEnv(); - } - - protected function compileRoot($root) { - $this->pushEnv(); - $this->scope = $this->makeOutputBlock($root->type); - $this->compileProps($root, $this->scope); - $this->popEnv(); - } - - protected function compileProps($block, $out) { - foreach ($this->sortProps($block->props) as $prop) { - $this->compileProp($prop, $block, $out); - } - $out->lines = $this->deduplicate($out->lines); - } - - /** - * Deduplicate lines in a block. Comments are not deduplicated. If a - * duplicate rule is detected, the comments immediately preceding each - * occurence are consolidated. - */ - protected function deduplicate($lines) { - $unique = array(); - $comments = array(); - - foreach($lines as $line) { - if (strpos($line, '/*') === 0) { - $comments[] = $line; - continue; - } - if (!in_array($line, $unique)) { - $unique[] = $line; - } - array_splice($unique, array_search($line, $unique), 0, $comments); - $comments = array(); - } - return array_merge($unique, $comments); - } - - protected function sortProps($props, $split = false) { - $vars = array(); - $imports = array(); - $other = array(); - $stack = array(); - - foreach ($props as $prop) { - switch ($prop[0]) { - case "comment": - $stack[] = $prop; - break; - case "assign": - $stack[] = $prop; - if (isset($prop[1][0]) && $prop[1][0] == $this->vPrefix) { - $vars = array_merge($vars, $stack); - } else { - $other = array_merge($other, $stack); - } - $stack = array(); - break; - case "import": - $id = self::$nextImportId++; - $prop[] = $id; - $stack[] = $prop; - $imports = array_merge($imports, $stack); - $other[] = array("import_mixin", $id); - $stack = array(); - break; - default: - $stack[] = $prop; - $other = array_merge($other, $stack); - $stack = array(); - break; - } - } - $other = array_merge($other, $stack); - - if ($split) { - return array(array_merge($vars, $imports, $vars), $other); - } else { - return array_merge($vars, $imports, $vars, $other); - } - } - - protected function compileMediaQuery($queries) { - $compiledQueries = array(); - foreach ($queries as $query) { - $parts = array(); - foreach ($query as $q) { - switch ($q[0]) { - case "mediaType": - $parts[] = implode(" ", array_slice($q, 1)); - break; - case "mediaExp": - if (isset($q[2])) { - $parts[] = "($q[1]: " . - $this->compileValue($this->reduce($q[2])) . ")"; - } else { - $parts[] = "($q[1])"; - } - break; - case "variable": - $parts[] = $this->compileValue($this->reduce($q)); - break; - } - } - - if (count($parts) > 0) { - $compiledQueries[] = implode(" and ", $parts); - } - } - - $out = "@media"; - if (!empty($parts)) { - $out .= " " . - implode($this->formatter->selectorSeparator, $compiledQueries); - } - return $out; - } - - protected function multiplyMedia($env, $childQueries = null) { - if (is_null($env) || - !empty($env->block->type) && $env->block->type != "media") - { - return $childQueries; - } - - // plain old block, skip - if (empty($env->block->type)) { - return $this->multiplyMedia($env->parent, $childQueries); - } - - $out = array(); - $queries = $env->block->queries; - if (is_null($childQueries)) { - $out = $queries; - } else { - foreach ($queries as $parent) { - foreach ($childQueries as $child) { - $out[] = array_merge($parent, $child); - } - } - } - - return $this->multiplyMedia($env->parent, $out); - } - - protected function expandParentSelectors(&$tag, $replace) { - $parts = explode("$&$", $tag); - $count = 0; - foreach ($parts as &$part) { - $part = str_replace($this->parentSelector, $replace, $part, $c); - $count += $c; - } - $tag = implode($this->parentSelector, $parts); - return $count; - } - - protected function findClosestSelectors() { - $env = $this->env; - $selectors = null; - while ($env !== null) { - if (isset($env->selectors)) { - $selectors = $env->selectors; - break; - } - $env = $env->parent; - } - - return $selectors; - } - - - // multiply $selectors against the nearest selectors in env - protected function multiplySelectors($selectors) { - // find parent selectors - - $parentSelectors = $this->findClosestSelectors(); - if (is_null($parentSelectors)) { - // kill parent reference in top level selector - foreach ($selectors as &$s) { - $this->expandParentSelectors($s, ""); - } - - return $selectors; - } - - $out = array(); - foreach ($parentSelectors as $parent) { - foreach ($selectors as $child) { - $count = $this->expandParentSelectors($child, $parent); - - // don't prepend the parent tag if & was used - if ($count > 0) { - $out[] = trim($child); - } else { - $out[] = trim($parent . ' ' . $child); - } - } - } - - return $out; - } - - // reduces selector expressions - protected function compileSelectors($selectors) { - $out = array(); - - foreach ($selectors as $s) { - if (is_array($s)) { - list(, $value) = $s; - $out[] = trim($this->compileValue($this->reduce($value))); - } else { - $out[] = $s; - } - } - - return $out; - } - - protected function eq($left, $right) { - return $left == $right; - } - - protected function patternMatch($block, $orderedArgs, $keywordArgs) { - // match the guards if it has them - // any one of the groups must have all its guards pass for a match - if (!empty($block->guards)) { - $groupPassed = false; - foreach ($block->guards as $guardGroup) { - foreach ($guardGroup as $guard) { - $this->pushEnv(); - $this->zipSetArgs($block->args, $orderedArgs, $keywordArgs); - - $negate = false; - if ($guard[0] == "negate") { - $guard = $guard[1]; - $negate = true; - } - - $passed = $this->reduce($guard) == self::$TRUE; - if ($negate) $passed = !$passed; - - $this->popEnv(); - - if ($passed) { - $groupPassed = true; - } else { - $groupPassed = false; - break; - } - } - - if ($groupPassed) break; - } - - if (!$groupPassed) { - return false; - } - } - - if (empty($block->args)) { - return $block->isVararg || empty($orderedArgs) && empty($keywordArgs); - } - - $remainingArgs = $block->args; - if ($keywordArgs) { - $remainingArgs = array(); - foreach ($block->args as $arg) { - if ($arg[0] == "arg" && isset($keywordArgs[$arg[1]])) { - continue; - } - - $remainingArgs[] = $arg; - } - } - - $i = -1; // no args - // try to match by arity or by argument literal - foreach ($remainingArgs as $i => $arg) { - switch ($arg[0]) { - case "lit": - if (empty($orderedArgs[$i]) || !$this->eq($arg[1], $orderedArgs[$i])) { - return false; - } - break; - case "arg": - // no arg and no default value - if (!isset($orderedArgs[$i]) && !isset($arg[2])) { - return false; - } - break; - case "rest": - $i--; // rest can be empty - break 2; - } - } - - if ($block->isVararg) { - return true; // not having enough is handled above - } else { - $numMatched = $i + 1; - // greater than because default values always match - return $numMatched >= count($orderedArgs); - } - } - - protected function patternMatchAll($blocks, $orderedArgs, $keywordArgs, $skip=array()) { - $matches = null; - foreach ($blocks as $block) { - // skip seen blocks that don't have arguments - if (isset($skip[$block->id]) && !isset($block->args)) { - continue; - } - - if ($this->patternMatch($block, $orderedArgs, $keywordArgs)) { - $matches[] = $block; - } - } - - return $matches; - } - - // attempt to find blocks matched by path and args - protected function findBlocks($searchIn, $path, $orderedArgs, $keywordArgs, $seen=array()) { - if ($searchIn == null) return null; - if (isset($seen[$searchIn->id])) return null; - $seen[$searchIn->id] = true; - - $name = $path[0]; - - if (isset($searchIn->children[$name])) { - $blocks = $searchIn->children[$name]; - if (count($path) == 1) { - $matches = $this->patternMatchAll($blocks, $orderedArgs, $keywordArgs, $seen); - if (!empty($matches)) { - // This will return all blocks that match in the closest - // scope that has any matching block, like lessjs - return $matches; - } - } else { - $matches = array(); - foreach ($blocks as $subBlock) { - $subMatches = $this->findBlocks($subBlock, - array_slice($path, 1), $orderedArgs, $keywordArgs, $seen); - - if (!is_null($subMatches)) { - foreach ($subMatches as $sm) { - $matches[] = $sm; - } - } - } - - return count($matches) > 0 ? $matches : null; - } - } - if ($searchIn->parent === $searchIn) return null; - return $this->findBlocks($searchIn->parent, $path, $orderedArgs, $keywordArgs, $seen); - } - - // sets all argument names in $args to either the default value - // or the one passed in through $values - protected function zipSetArgs($args, $orderedValues, $keywordValues) { - $assignedValues = array(); - - $i = 0; - foreach ($args as $a) { - if ($a[0] == "arg") { - if (isset($keywordValues[$a[1]])) { - // has keyword arg - $value = $keywordValues[$a[1]]; - } elseif (isset($orderedValues[$i])) { - // has ordered arg - $value = $orderedValues[$i]; - $i++; - } elseif (isset($a[2])) { - // has default value - $value = $a[2]; - } else { - $this->throwError("Failed to assign arg " . $a[1]); - $value = null; // :( - } - - $value = $this->reduce($value); - $this->set($a[1], $value); - $assignedValues[] = $value; - } else { - // a lit - $i++; - } - } - - // check for a rest - $last = end($args); - if ($last !== false && $last[0] === "rest") { - $rest = array_slice($orderedValues, count($args) - 1); - $this->set($last[1], $this->reduce(array("list", " ", $rest))); - } - - // wow is this the only true use of PHP's + operator for arrays? - $this->env->arguments = $assignedValues + $orderedValues; - } - - // compile a prop and update $lines or $blocks appropriately - protected function compileProp($prop, $block, $out) { - // set error position context - $this->sourceLoc = isset($prop[-1]) ? $prop[-1] : -1; - - switch ($prop[0]) { - case 'assign': - list(, $name, $value) = $prop; - if ($name[0] == $this->vPrefix) { - $this->set($name, $value); - } else { - $out->lines[] = $this->formatter->property($name, - $this->compileValue($this->reduce($value))); - } - break; - case 'block': - list(, $child) = $prop; - $this->compileBlock($child); - break; - case 'ruleset': - case 'mixin': - list(, $path, $args, $suffix) = $prop; - - $orderedArgs = array(); - $keywordArgs = array(); - foreach ((array)$args as $arg) { - $argval = null; - switch ($arg[0]) { - case "arg": - if (!isset($arg[2])) { - $orderedArgs[] = $this->reduce(array("variable", $arg[1])); - } else { - $keywordArgs[$arg[1]] = $this->reduce($arg[2]); - } - break; - - case "lit": - $orderedArgs[] = $this->reduce($arg[1]); - break; - default: - $this->throwError("Unknown arg type: " . $arg[0]); - } - } - - $mixins = $this->findBlocks($block, $path, $orderedArgs, $keywordArgs); - - if ($mixins === null) { - $block->parser->throwError("{$prop[1][0]} is undefined", $block->count); - } - - if(strpos($prop[1][0], "$") === 0) { - //Use Ruleset Logic - Only last element - $mixins = array(array_pop($mixins)); - } - - foreach ($mixins as $mixin) { - if ($mixin === $block && !$orderedArgs) { - continue; - } - - $haveScope = false; - if (isset($mixin->parent->scope)) { - $haveScope = true; - $mixinParentEnv = $this->pushEnv(); - $mixinParentEnv->storeParent = $mixin->parent->scope; - } - - $haveArgs = false; - if (isset($mixin->args)) { - $haveArgs = true; - $this->pushEnv(); - $this->zipSetArgs($mixin->args, $orderedArgs, $keywordArgs); - } - - $oldParent = $mixin->parent; - if ($mixin != $block) $mixin->parent = $block; - - foreach ($this->sortProps($mixin->props) as $subProp) { - if ($suffix !== null && - $subProp[0] == "assign" && - is_string($subProp[1]) && - $subProp[1]{0} != $this->vPrefix) - { - $subProp[2] = array( - 'list', ' ', - array($subProp[2], array('keyword', $suffix)) - ); - } - - $this->compileProp($subProp, $mixin, $out); - } - - $mixin->parent = $oldParent; - - if ($haveArgs) $this->popEnv(); - if ($haveScope) $this->popEnv(); - } - - break; - case 'raw': - $out->lines[] = $prop[1]; - break; - case "directive": - list(, $name, $value) = $prop; - $out->lines[] = "@$name " . $this->compileValue($this->reduce($value)).';'; - break; - case "comment": - $out->lines[] = $prop[1]; - break; - case "import"; - list(, $importPath, $importId) = $prop; - $importPath = $this->reduce($importPath); - - if (!isset($this->env->imports)) { - $this->env->imports = array(); - } - - $result = $this->tryImport($importPath, $block, $out); - - $this->env->imports[$importId] = $result === false ? - array(false, "@import " . $this->compileValue($importPath).";") : - $result; - - break; - case "import_mixin": - list(,$importId) = $prop; - $import = $this->env->imports[$importId]; - if ($import[0] === false) { - if (isset($import[1])) { - $out->lines[] = $import[1]; - } - } else { - list(, $bottom, $parser, $importDir) = $import; - $this->compileImportedProps($bottom, $block, $out, $parser, $importDir); - } - - break; - default: - $block->parser->throwError("unknown op: {$prop[0]}\n", $block->count); - } - } - - - /** - * Compiles a primitive value into a CSS property value. - * - * Values in lessphp are typed by being wrapped in arrays, their format is - * typically: - * - * array(type, contents [, additional_contents]*) - * - * The input is expected to be reduced. This function will not work on - * things like expressions and variables. - */ - public function compileValue($value) { - switch ($value[0]) { - case 'list': - // [1] - delimiter - // [2] - array of values - return implode($value[1], array_map(array($this, 'compileValue'), $value[2])); - case 'raw_color': - if (!empty($this->formatter->compressColors)) { - return $this->compileValue($this->coerceColor($value)); - } - return $value[1]; - case 'keyword': - // [1] - the keyword - return $value[1]; - case 'number': - list(, $num, $unit) = $value; - // [1] - the number - // [2] - the unit - if ($this->numberPrecision !== null) { - $num = round($num, $this->numberPrecision); - } - return $num . $unit; - case 'string': - // [1] - contents of string (includes quotes) - list(, $delim, $content) = $value; - foreach ($content as &$part) { - if (is_array($part)) { - $part = $this->compileValue($part); - } - } - return $delim . implode($content) . $delim; - case 'color': - // [1] - red component (either number or a %) - // [2] - green component - // [3] - blue component - // [4] - optional alpha component - list(, $r, $g, $b) = $value; - $r = round($r); - $g = round($g); - $b = round($b); - - if (count($value) == 5 && $value[4] != 1) { // rgba - return 'rgba('.$r.','.$g.','.$b.','.$value[4].')'; - } - - $h = sprintf("#%02x%02x%02x", $r, $g, $b); - - if (!empty($this->formatter->compressColors)) { - // Converting hex color to short notation (e.g. #003399 to #039) - if ($h[1] === $h[2] && $h[3] === $h[4] && $h[5] === $h[6]) { - $h = '#' . $h[1] . $h[3] . $h[5]; - } - } - - return $h; - - case 'function': - list(, $name, $args) = $value; - return $name.'('.$this->compileValue($args).')'; - default: // assumed to be unit - $this->throwError("unknown value type: $value[0]"); - } - } - - protected function lib_pow($args) { - list($base, $exp) = $this->assertArgs($args, 2, "pow"); - return array( "number", pow($this->assertNumber($base), $this->assertNumber($exp)), $args[2][0][2] ); - } - - protected function lib_pi() { - return pi(); - } - - protected function lib_mod($args) { - list($a, $b) = $this->assertArgs($args, 2, "mod"); - return array( "number", $this->assertNumber($a) % $this->assertNumber($b), $args[2][0][2] ); - } - - protected function lib_convert($args) { - list($value, $to) = $this->assertArgs($args, 2, "convert"); - - // If it's a keyword, grab the string version instead - if( is_array( $to ) && $to[0] == "keyword" ) - $to = $to[1]; - - return $this->convert( $value, $to ); - } - - protected function lib_abs($num) { - return array( "number", abs($this->assertNumber($num)), $num[2] ); - } - - protected function lib_min($args) { - $values = $this->assertMinArgs($args, 1, "min"); - - $first_format = $values[0][2]; - - $min_index = 0; - $min_value = $values[0][1]; - - for( $a = 0; $a < sizeof( $values ); $a++ ) - { - $converted = $this->convert( $values[$a], $first_format ); - - if( $converted[1] < $min_value ) - { - $min_index = $a; - $min_value = $values[$a][1]; - } - } - - return $values[ $min_index ]; - } - - protected function lib_max($args) { - $values = $this->assertMinArgs($args, 1, "max"); - - $first_format = $values[0][2]; - - $max_index = 0; - $max_value = $values[0][1]; - - for( $a = 0; $a < sizeof( $values ); $a++ ) - { - $converted = $this->convert( $values[$a], $first_format ); - - if( $converted[1] > $max_value ) - { - $max_index = $a; - $max_value = $values[$a][1]; - } - } - - return $values[ $max_index ]; - } - - protected function lib_tan($num) { - return tan($this->assertNumber($num)); - } - - protected function lib_sin($num) { - return sin($this->assertNumber($num)); - } - - protected function lib_cos($num) { - return cos($this->assertNumber($num)); - } - - protected function lib_atan($num) { - $num = atan($this->assertNumber($num)); - return array("number", $num, "rad"); - } - - protected function lib_asin($num) { - $num = asin($this->assertNumber($num)); - return array("number", $num, "rad"); - } - - protected function lib_acos($num) { - $num = acos($this->assertNumber($num)); - return array("number", $num, "rad"); - } - - protected function lib_sqrt($num) { - return sqrt($this->assertNumber($num)); - } - - protected function lib_extract($value) { - list($list, $idx) = $this->assertArgs($value, 2, "extract"); - $idx = $this->assertNumber($idx); - // 1 indexed - if ($list[0] == "list" && isset($list[2][$idx - 1])) { - return $list[2][$idx - 1]; - } - } - - protected function lib_isnumber($value) { - return $this->toBool($value[0] == "number"); - } - - protected function lib_isstring($value) { - return $this->toBool($value[0] == "string"); - } - - protected function lib_iscolor($value) { - return $this->toBool($this->coerceColor($value)); - } - - protected function lib_iskeyword($value) { - return $this->toBool($value[0] == "keyword"); - } - - protected function lib_ispixel($value) { - return $this->toBool($value[0] == "number" && $value[2] == "px"); - } - - protected function lib_ispercentage($value) { - return $this->toBool($value[0] == "number" && $value[2] == "%"); - } - - protected function lib_isem($value) { - return $this->toBool($value[0] == "number" && $value[2] == "em"); - } - - protected function lib_isrem($value) { - return $this->toBool($value[0] == "number" && $value[2] == "rem"); - } - - protected function lib_rgbahex($color) { - $color = $this->coerceColor($color); - if (is_null($color)) - $this->throwError("color expected for rgbahex"); - - return sprintf("#%02x%02x%02x%02x", - isset($color[4]) ? $color[4]*255 : 255, - $color[1],$color[2], $color[3]); - } - - protected function lib_argb($color){ - return $this->lib_rgbahex($color); - } - - /** - * Given an url, decide whether to output a regular link or the base64-encoded contents of the file - * - * @param array $value either an argument list (two strings) or a single string - * @return string formatted url(), either as a link or base64-encoded - */ - protected function lib_data_uri($value) { - $mime = ($value[0] === 'list') ? $value[2][0][2] : null; - $url = ($value[0] === 'list') ? $value[2][1][2][0] : $value[2][0]; - - $fullpath = $this->findImport($url); - - if($fullpath && ($fsize = filesize($fullpath)) !== false) { - // IE8 can't handle data uris larger than 32KB - if($fsize/1024 < 32) { - if(is_null($mime)) { - if(class_exists('finfo')) { // php 5.3+ - $finfo = new finfo(FILEINFO_MIME); - $mime = explode('; ', $finfo->file($fullpath)); - $mime = $mime[0]; - } elseif(function_exists('mime_content_type')) { // PHP 5.2 - $mime = mime_content_type($fullpath); - } - } - - if(!is_null($mime)) // fallback if the mime type is still unknown - $url = sprintf('data:%s;base64,%s', $mime, base64_encode(file_get_contents($fullpath))); - } - } - - return 'url("'.$url.'")'; - } - - // utility func to unquote a string - protected function lib_e($arg) { - switch ($arg[0]) { - case "list": - $items = $arg[2]; - if (isset($items[0])) { - return $this->lib_e($items[0]); - } - $this->throwError("unrecognised input"); - case "string": - $arg[1] = ""; - return $arg; - case "keyword": - return $arg; - default: - return array("keyword", $this->compileValue($arg)); - } - } - - protected function lib__sprintf($args) { - if ($args[0] != "list") return $args; - $values = $args[2]; - $string = array_shift($values); - $template = $this->compileValue($this->lib_e($string)); - - $i = 0; - if (preg_match_all('/%[dsa]/', $template, $m)) { - foreach ($m[0] as $match) { - $val = isset($values[$i]) ? - $this->reduce($values[$i]) : array('keyword', ''); - - // lessjs compat, renders fully expanded color, not raw color - if ($color = $this->coerceColor($val)) { - $val = $color; - } - - $i++; - $rep = $this->compileValue($this->lib_e($val)); - $template = preg_replace('/'.self::preg_quote($match).'/', - $rep, $template, 1); - } - } - - $d = $string[0] == "string" ? $string[1] : '"'; - return array("string", $d, array($template)); - } - - protected function lib_floor($arg) { - $value = $this->assertNumber($arg); - return array("number", floor($value), $arg[2]); - } - - protected function lib_ceil($arg) { - $value = $this->assertNumber($arg); - return array("number", ceil($value), $arg[2]); - } - - protected function lib_round($arg) { - if($arg[0] != "list") { - $value = $this->assertNumber($arg); - return array("number", round($value), $arg[2]); - } else { - $value = $this->assertNumber($arg[2][0]); - $precision = $this->assertNumber($arg[2][1]); - return array("number", round($value, $precision), $arg[2][0][2]); - } - } - - protected function lib_unit($arg) { - if ($arg[0] == "list") { - list($number, $newUnit) = $arg[2]; - return array("number", $this->assertNumber($number), - $this->compileValue($this->lib_e($newUnit))); - } else { - return array("number", $this->assertNumber($arg), ""); - } - } - - /** - * Helper function to get arguments for color manipulation functions. - * takes a list that contains a color like thing and a percentage - */ - public function colorArgs($args) { - if ($args[0] != 'list' || count($args[2]) < 2) { - return array(array('color', 0, 0, 0), 0); - } - list($color, $delta) = $args[2]; - $color = $this->assertColor($color); - $delta = floatval($delta[1]); - - return array($color, $delta); - } - - protected function lib_darken($args) { - list($color, $delta) = $this->colorArgs($args); - - $hsl = $this->toHSL($color); - $hsl[3] = $this->clamp($hsl[3] - $delta, 100); - return $this->toRGB($hsl); - } - - protected function lib_lighten($args) { - list($color, $delta) = $this->colorArgs($args); - - $hsl = $this->toHSL($color); - $hsl[3] = $this->clamp($hsl[3] + $delta, 100); - return $this->toRGB($hsl); - } - - protected function lib_saturate($args) { - list($color, $delta) = $this->colorArgs($args); - - $hsl = $this->toHSL($color); - $hsl[2] = $this->clamp($hsl[2] + $delta, 100); - return $this->toRGB($hsl); - } - - protected function lib_desaturate($args) { - list($color, $delta) = $this->colorArgs($args); - - $hsl = $this->toHSL($color); - $hsl[2] = $this->clamp($hsl[2] - $delta, 100); - return $this->toRGB($hsl); - } - - protected function lib_spin($args) { - list($color, $delta) = $this->colorArgs($args); - - $hsl = $this->toHSL($color); - - $hsl[1] = $hsl[1] + $delta % 360; - if ($hsl[1] < 0) $hsl[1] += 360; - - return $this->toRGB($hsl); - } - - protected function lib_fadeout($args) { - list($color, $delta) = $this->colorArgs($args); - $color[4] = $this->clamp((isset($color[4]) ? $color[4] : 1) - $delta/100); - return $color; - } - - protected function lib_fadein($args) { - list($color, $delta) = $this->colorArgs($args); - $color[4] = $this->clamp((isset($color[4]) ? $color[4] : 1) + $delta/100); - return $color; - } - - protected function lib_hue($color) { - $hsl = $this->toHSL($this->assertColor($color)); - return round($hsl[1]); - } - - protected function lib_saturation($color) { - $hsl = $this->toHSL($this->assertColor($color)); - return round($hsl[2]); - } - - protected function lib_lightness($color) { - $hsl = $this->toHSL($this->assertColor($color)); - return round($hsl[3]); - } - - // get the alpha of a color - // defaults to 1 for non-colors or colors without an alpha - protected function lib_alpha($value) { - if (!is_null($color = $this->coerceColor($value))) { - return isset($color[4]) ? $color[4] : 1; - } - } - - // set the alpha of the color - protected function lib_fade($args) { - list($color, $alpha) = $this->colorArgs($args); - $color[4] = $this->clamp($alpha / 100.0); - return $color; - } - - protected function lib_percentage($arg) { - $num = $this->assertNumber($arg); - return array("number", $num*100, "%"); - } - - // mixes two colors by weight - // mix(@color1, @color2, [@weight: 50%]); - // http://sass-lang.com/docs/yardoc/Sass/Script/Functions.html#mix-instance_method - protected function lib_mix($args) { - if ($args[0] != "list" || count($args[2]) < 2) - $this->throwError("mix expects (color1, color2, weight)"); - - list($first, $second) = $args[2]; - $first = $this->assertColor($first); - $second = $this->assertColor($second); - - $first_a = $this->lib_alpha($first); - $second_a = $this->lib_alpha($second); - - if (isset($args[2][2])) { - $weight = $args[2][2][1] / 100.0; - } else { - $weight = 0.5; - } - - $w = $weight * 2 - 1; - $a = $first_a - $second_a; - - $w1 = (($w * $a == -1 ? $w : ($w + $a)/(1 + $w * $a)) + 1) / 2.0; - $w2 = 1.0 - $w1; - - $new = array('color', - $w1 * $first[1] + $w2 * $second[1], - $w1 * $first[2] + $w2 * $second[2], - $w1 * $first[3] + $w2 * $second[3], - ); - - if ($first_a != 1.0 || $second_a != 1.0) { - $new[] = $first_a * $weight + $second_a * ($weight - 1); - } - - return $this->fixColor($new); - } - - protected function lib_contrast($args) { - $darkColor = array('color', 0, 0, 0); - $lightColor = array('color', 255, 255, 255); - $threshold = 0.43; - - if ( $args[0] == 'list' ) { - $inputColor = ( isset($args[2][0]) ) ? $this->assertColor($args[2][0]) : $lightColor; - $darkColor = ( isset($args[2][1]) ) ? $this->assertColor($args[2][1]) : $darkColor; - $lightColor = ( isset($args[2][2]) ) ? $this->assertColor($args[2][2]) : $lightColor; - if( isset($args[2][3]) ) { - if( isset($args[2][3][2]) && $args[2][3][2] == '%' ) { - $args[2][3][1] /= 100; - unset($args[2][3][2]); - } - $threshold = $this->assertNumber($args[2][3]); - } - } - else { - $inputColor = $this->assertColor($args); - } - - $inputColor = $this->coerceColor($inputColor); - $darkColor = $this->coerceColor($darkColor); - $lightColor = $this->coerceColor($lightColor); - - //Figure out which is actually light and dark! - if ( $this->lib_luma($darkColor) > $this->lib_luma($lightColor) ) { - $t = $lightColor; - $lightColor = $darkColor; - $darkColor = $t; - } - - $inputColor_alpha = $this->lib_alpha($inputColor); - if ( ( $this->lib_luma($inputColor) * $inputColor_alpha) < $threshold) { - return $lightColor; - } - return $darkColor; - } - - protected function lib_luma($color) { - $color = $this->coerceColor($color); - return (0.2126 * $color[1] / 255) + (0.7152 * $color[2] / 255) + (0.0722 * $color[3] / 255); - } - - - public function assertColor($value, $error = "expected color value") { - $color = $this->coerceColor($value); - if (is_null($color)) $this->throwError($error); - return $color; - } - - public function assertNumber($value, $error = "expecting number") { - if ($value[0] == "number") return $value[1]; - $this->throwError($error); - } - - public function assertArgs($value, $expectedArgs, $name="") { - if ($expectedArgs == 1) { - return $value; - } else { - if ($value[0] !== "list" || $value[1] != ",") $this->throwError("expecting list"); - $values = $value[2]; - $numValues = count($values); - if ($expectedArgs != $numValues) { - if ($name) { - $name = $name . ": "; - } - - $this->throwError("${name}expecting $expectedArgs arguments, got $numValues"); - } - - return $values; - } - } - - public function assertMinArgs($value, $expectedMinArgs, $name="") { - if ($value[0] !== "list" || $value[1] != ",") $this->throwError("expecting list"); - $values = $value[2]; - $numValues = count($values); - if ($expectedMinArgs > $numValues) { - if ($name) { - $name = $name . ": "; - } - - $this->throwError("${name}expecting at least $expectedMinArgs arguments, got $numValues"); - } - - return $values; -} - - protected function toHSL($color) { - if ($color[0] == 'hsl') return $color; - - $r = $color[1] / 255; - $g = $color[2] / 255; - $b = $color[3] / 255; - - $min = min($r, $g, $b); - $max = max($r, $g, $b); - - $L = ($min + $max) / 2; - if ($min == $max) { - $S = $H = 0; - } else { - if ($L < 0.5) - $S = ($max - $min)/($max + $min); - else - $S = ($max - $min)/(2.0 - $max - $min); - - if ($r == $max) $H = ($g - $b)/($max - $min); - elseif ($g == $max) $H = 2.0 + ($b - $r)/($max - $min); - elseif ($b == $max) $H = 4.0 + ($r - $g)/($max - $min); - - } - - $out = array('hsl', - ($H < 0 ? $H + 6 : $H)*60, - $S*100, - $L*100, - ); - - if (count($color) > 4) $out[] = $color[4]; // copy alpha - return $out; - } - - protected function toRGB_helper($comp, $temp1, $temp2) { - if ($comp < 0) $comp += 1.0; - elseif ($comp > 1) $comp -= 1.0; - - if (6 * $comp < 1) return $temp1 + ($temp2 - $temp1) * 6 * $comp; - if (2 * $comp < 1) return $temp2; - if (3 * $comp < 2) return $temp1 + ($temp2 - $temp1)*((2/3) - $comp) * 6; - - return $temp1; - } - - /** - * Converts a hsl array into a color value in rgb. - * Expects H to be in range of 0 to 360, S and L in 0 to 100 - */ - protected function toRGB($color) { - if ($color[0] == 'color') return $color; - - $H = $color[1] / 360; - $S = $color[2] / 100; - $L = $color[3] / 100; - - if ($S == 0) { - $r = $g = $b = $L; - } else { - $temp2 = $L < 0.5 ? - $L*(1.0 + $S) : - $L + $S - $L * $S; - - $temp1 = 2.0 * $L - $temp2; - - $r = $this->toRGB_helper($H + 1/3, $temp1, $temp2); - $g = $this->toRGB_helper($H, $temp1, $temp2); - $b = $this->toRGB_helper($H - 1/3, $temp1, $temp2); - } - - // $out = array('color', round($r*255), round($g*255), round($b*255)); - $out = array('color', $r*255, $g*255, $b*255); - if (count($color) > 4) $out[] = $color[4]; // copy alpha - return $out; - } - - protected function clamp($v, $max = 1, $min = 0) { - return min($max, max($min, $v)); - } - - /** - * Convert the rgb, rgba, hsl color literals of function type - * as returned by the parser into values of color type. - */ - protected function funcToColor($func) { - $fname = $func[1]; - if ($func[2][0] != 'list') return false; // need a list of arguments - $rawComponents = $func[2][2]; - - if ($fname == 'hsl' || $fname == 'hsla') { - $hsl = array('hsl'); - $i = 0; - foreach ($rawComponents as $c) { - $val = $this->reduce($c); - $val = isset($val[1]) ? floatval($val[1]) : 0; - - if ($i == 0) $clamp = 360; - elseif ($i < 3) $clamp = 100; - else $clamp = 1; - - $hsl[] = $this->clamp($val, $clamp); - $i++; - } - - while (count($hsl) < 4) $hsl[] = 0; - return $this->toRGB($hsl); - - } elseif ($fname == 'rgb' || $fname == 'rgba') { - $components = array(); - $i = 1; - foreach ($rawComponents as $c) { - $c = $this->reduce($c); - if ($i < 4) { - if ($c[0] == "number" && $c[2] == "%") { - $components[] = 255 * ($c[1] / 100); - } else { - $components[] = floatval($c[1]); - } - } elseif ($i == 4) { - if ($c[0] == "number" && $c[2] == "%") { - $components[] = 1.0 * ($c[1] / 100); - } else { - $components[] = floatval($c[1]); - } - } else break; - - $i++; - } - while (count($components) < 3) $components[] = 0; - array_unshift($components, 'color'); - return $this->fixColor($components); - } - - return false; - } - - protected function reduce($value, $forExpression = false) { - switch ($value[0]) { - case "interpolate": - $reduced = $this->reduce($value[1]); - $var = $this->compileValue($reduced); - $res = $this->reduce(array("variable", $this->vPrefix . $var)); - - if ($res[0] == "raw_color") { - $res = $this->coerceColor($res); - } - - if (empty($value[2])) $res = $this->lib_e($res); - - return $res; - case "variable": - $key = $value[1]; - if (is_array($key)) { - $key = $this->reduce($key); - $key = $this->vPrefix . $this->compileValue($this->lib_e($key)); - } - - $seen =& $this->env->seenNames; - - if (!empty($seen[$key])) { - $this->throwError("infinite loop detected: $key"); - } - - $seen[$key] = true; - $out = $this->reduce($this->get($key)); - $seen[$key] = false; - return $out; - case "list": - foreach ($value[2] as &$item) { - $item = $this->reduce($item, $forExpression); - } - return $value; - case "expression": - return $this->evaluate($value); - case "string": - foreach ($value[2] as &$part) { - if (is_array($part)) { - $strip = $part[0] == "variable"; - $part = $this->reduce($part); - if ($strip) $part = $this->lib_e($part); - } - } - return $value; - case "escape": - list(,$inner) = $value; - return $this->lib_e($this->reduce($inner)); - case "function": - $color = $this->funcToColor($value); - if ($color) return $color; - - list(, $name, $args) = $value; - if ($name == "%") $name = "_sprintf"; - - $f = isset($this->libFunctions[$name]) ? - $this->libFunctions[$name] : array($this, 'lib_'.str_replace('-', '_', $name)); - - if (is_callable($f)) { - if ($args[0] == 'list') - $args = self::compressList($args[2], $args[1]); - - $ret = call_user_func($f, $this->reduce($args, true), $this); - - if (is_null($ret)) { - return array("string", "", array( - $name, "(", $args, ")" - )); - } - - // convert to a typed value if the result is a php primitive - if (is_numeric($ret)) $ret = array('number', $ret, ""); - elseif (!is_array($ret)) $ret = array('keyword', $ret); - - return $ret; - } - - // plain function, reduce args - $value[2] = $this->reduce($value[2]); - return $value; - case "unary": - list(, $op, $exp) = $value; - $exp = $this->reduce($exp); - - if ($exp[0] == "number") { - switch ($op) { - case "+": - return $exp; - case "-": - $exp[1] *= -1; - return $exp; - } - } - return array("string", "", array($op, $exp)); - } - - if ($forExpression) { - switch ($value[0]) { - case "keyword": - if ($color = $this->coerceColor($value)) { - return $color; - } - break; - case "raw_color": - return $this->coerceColor($value); - } - } - - return $value; - } - - - // coerce a value for use in color operation - protected function coerceColor($value) { - switch($value[0]) { - case 'color': return $value; - case 'raw_color': - $c = array("color", 0, 0, 0); - $colorStr = substr($value[1], 1); - $num = hexdec($colorStr); - $width = strlen($colorStr) == 3 ? 16 : 256; - - for ($i = 3; $i > 0; $i--) { // 3 2 1 - $t = $num % $width; - $num /= $width; - - $c[$i] = $t * (256/$width) + $t * floor(16/$width); - } - - return $c; - case 'keyword': - $name = $value[1]; - if (isset(self::$cssColors[$name])) { - $rgba = explode(',', self::$cssColors[$name]); - - if(isset($rgba[3])) - return array('color', $rgba[0], $rgba[1], $rgba[2], $rgba[3]); - - return array('color', $rgba[0], $rgba[1], $rgba[2]); - } - return null; - } - } - - // make something string like into a string - protected function coerceString($value) { - switch ($value[0]) { - case "string": - return $value; - case "keyword": - return array("string", "", array($value[1])); - } - return null; - } - - // turn list of length 1 into value type - protected function flattenList($value) { - if ($value[0] == "list" && count($value[2]) == 1) { - return $this->flattenList($value[2][0]); - } - return $value; - } - - public function toBool($a) { - if ($a) return self::$TRUE; - else return self::$FALSE; - } - - // evaluate an expression - protected function evaluate($exp) { - list(, $op, $left, $right, $whiteBefore, $whiteAfter) = $exp; - - $left = $this->reduce($left, true); - $right = $this->reduce($right, true); - - if ($leftColor = $this->coerceColor($left)) { - $left = $leftColor; - } - - if ($rightColor = $this->coerceColor($right)) { - $right = $rightColor; - } - - $ltype = $left[0]; - $rtype = $right[0]; - - // operators that work on all types - if ($op == "and") { - return $this->toBool($left == self::$TRUE && $right == self::$TRUE); - } - - if ($op == "=") { - return $this->toBool($this->eq($left, $right) ); - } - - if ($op == "+" && !is_null($str = $this->stringConcatenate($left, $right))) { - return $str; - } - - // type based operators - $fname = "op_${ltype}_${rtype}"; - if (is_callable(array($this, $fname))) { - $out = $this->$fname($op, $left, $right); - if (!is_null($out)) return $out; - } - - // make the expression look it did before being parsed - $paddedOp = $op; - if ($whiteBefore) $paddedOp = " " . $paddedOp; - if ($whiteAfter) $paddedOp .= " "; - - return array("string", "", array($left, $paddedOp, $right)); - } - - protected function stringConcatenate($left, $right) { - if ($strLeft = $this->coerceString($left)) { - if ($right[0] == "string") { - $right[1] = ""; - } - $strLeft[2][] = $right; - return $strLeft; - } - - if ($strRight = $this->coerceString($right)) { - array_unshift($strRight[2], $left); - return $strRight; - } - } - - protected function convert( $number, $to ) - { - $value = $this->assertNumber( $number ); - $from = $number[2]; - - // easy out - if( $from == $to ) - return $number; - - // check if the from value is a length - if( ( $from_index = array_search( $from, self::$lengths ) ) !== false ) { - // make sure to value is too - if( in_array( $to, self::$lengths ) ) { - // do the actual conversion - $to_index = array_search( $to, self::$lengths ); - $px = $value * self::$lengths_to_base[ $from_index ]; - $result = $px * ( 1 / self::$lengths_to_base[ $to_index ] ); - - $result = round( $result, 8 ); - return array( "number", $result, $to ); - } - } - - // do the same check for times - if( in_array( $from, self::$times ) ) { - if( in_array( $to, self::$times ) ) { - // currently only ms and s are valid - if( $to == "ms" ) - $result = $value * 1000; - else - $result = $value / 1000; - - $result = round( $result, 8 ); - return array( "number", $result, $to ); - } - } - - // lastly check for an angle - if( in_array( $from, self::$angles ) ) { - // convert whatever angle it is into degrees - if( $from == "rad" ) - $deg = rad2deg( $value ); - - else if( $from == "turn" ) - $deg = $value * 360; - - else if( $from == "grad" ) - $deg = $value / (400 / 360); - - else - $deg = $value; - - // Then convert it from degrees into desired unit - if( $to == "deg" ) - $result = $deg; - - if( $to == "rad" ) - $result = deg2rad( $deg ); - - if( $to == "turn" ) - $result = $value / 360; - - if( $to == "grad" ) - $result = $value * (400 / 360); - - $result = round( $result, 8 ); - return array( "number", $result, $to ); - } - - // we don't know how to convert these - $this->throwError( "Cannot convert {$from} to {$to}" ); - } - - // make sure a color's components don't go out of bounds - protected function fixColor($c) { - foreach (range(1, 3) as $i) { - if ($c[$i] < 0) $c[$i] = 0; - if ($c[$i] > 255) $c[$i] = 255; - } - - return $c; - } - - protected function op_number_color($op, $lft, $rgt) { - if ($op == '+' || $op == '*') { - return $this->op_color_number($op, $rgt, $lft); - } - } - - protected function op_color_number($op, $lft, $rgt) { - if ($rgt[0] == '%') $rgt[1] /= 100; - - return $this->op_color_color($op, $lft, - array_fill(1, count($lft) - 1, $rgt[1])); - } - - protected function op_color_color($op, $left, $right) { - $out = array('color'); - $max = count($left) > count($right) ? count($left) : count($right); - foreach (range(1, $max - 1) as $i) { - $lval = isset($left[$i]) ? $left[$i] : 0; - $rval = isset($right[$i]) ? $right[$i] : 0; - switch ($op) { - case '+': - $out[] = $lval + $rval; - break; - case '-': - $out[] = $lval - $rval; - break; - case '*': - $out[] = $lval * $rval; - break; - case '%': - $out[] = $lval % $rval; - break; - case '/': - if ($rval == 0) $this->throwError("evaluate error: can't divide by zero"); - $out[] = $lval / $rval; - break; - default: - $this->throwError('evaluate error: color op number failed on op '.$op); - } - } - return $this->fixColor($out); - } - - function lib_red($color){ - $color = $this->coerceColor($color); - if (is_null($color)) { - $this->throwError('color expected for red()'); - } - - return $color[1]; - } - - function lib_green($color){ - $color = $this->coerceColor($color); - if (is_null($color)) { - $this->throwError('color expected for green()'); - } - - return $color[2]; - } - - function lib_blue($color){ - $color = $this->coerceColor($color); - if (is_null($color)) { - $this->throwError('color expected for blue()'); - } - - return $color[3]; - } - - - // operator on two numbers - protected function op_number_number($op, $left, $right) { - $unit = empty($left[2]) ? $right[2] : $left[2]; - - $value = 0; - switch ($op) { - case '+': - $value = $left[1] + $right[1]; - break; - case '*': - $value = $left[1] * $right[1]; - break; - case '-': - $value = $left[1] - $right[1]; - break; - case '%': - $value = $left[1] % $right[1]; - break; - case '/': - if ($right[1] == 0) $this->throwError('parse error: divide by zero'); - $value = $left[1] / $right[1]; - break; - case '<': - return $this->toBool($left[1] < $right[1]); - case '>': - return $this->toBool($left[1] > $right[1]); - case '>=': - return $this->toBool($left[1] >= $right[1]); - case '=<': - return $this->toBool($left[1] <= $right[1]); - default: - $this->throwError('parse error: unknown number operator: '.$op); - } - - return array("number", $value, $unit); - } - - - /* environment functions */ - - protected function makeOutputBlock($type, $selectors = null) { - $b = new stdclass; - $b->lines = array(); - $b->children = array(); - $b->selectors = $selectors; - $b->type = $type; - $b->parent = $this->scope; - return $b; - } - - // the state of execution - protected function pushEnv($block = null) { - $e = new stdclass; - $e->parent = $this->env; - $e->store = array(); - $e->block = $block; - - $this->env = $e; - return $e; - } - - // pop something off the stack - protected function popEnv() { - $old = $this->env; - $this->env = $this->env->parent; - return $old; - } - - // set something in the current env - protected function set($name, $value) { - $this->env->store[$name] = $value; - } - - - // get the highest occurrence entry for a name - protected function get($name) { - $current = $this->env; - - // track scope to evaluate - $scope_secondary = array(); - - $isArguments = $name == $this->vPrefix . 'arguments'; - while ($current) { - if ($isArguments && isset($current->arguments)) { - return array('list', ' ', $current->arguments); - } - - if (isset($current->store[$name])) - return $current->store[$name]; - // has secondary scope? - if (isset($current->storeParent)) - $scope_secondary[] = $current->storeParent; - - if (isset($current->parent)) - $current = $current->parent; - else - $current = null; - } - - while (count($scope_secondary)) { - // pop one off - $current = array_shift($scope_secondary); - while ($current) { - if ($isArguments && isset($current->arguments)) { - return array('list', ' ', $current->arguments); - } - - if (isset($current->store[$name])) { - return $current->store[$name]; - } - - // has secondary scope? - if (isset($current->storeParent)) { - $scope_secondary[] = $current->storeParent; - } - - if (isset($current->parent)) { - $current = $current->parent; - } else { - $current = null; - } - } - } - - $this->throwError("variable $name is undefined"); - } - - // inject array of unparsed strings into environment as variables - protected function injectVariables($args) { - $this->pushEnv(); - $parser = new lessc_parser($this, __METHOD__); - foreach ($args as $name => $strValue) { - if ($name[0] != '@') $name = '@'.$name; - $parser->count = 0; - $parser->buffer = (string)$strValue; - if (!$parser->propertyValue($value)) { - throw new \Exception("failed to parse passed in variable $name: $strValue"); - } - - $this->set($name, $value); - } - } - - /** - * Initialize any static state, can initialize parser for a file - * $opts isn't used yet - */ - public function __construct($fname = null) { - if ($fname !== null) { - // used for deprecated parse method - $this->_parseFile = $fname; - } - } - - public function compile($string, $name = null) { - $locale = setlocale(LC_NUMERIC, 0); - setlocale(LC_NUMERIC, "C"); - - $this->parser = $this->makeParser($name); - $root = $this->parser->parse($string); - - $this->env = null; - $this->scope = null; - $this->allParsedFiles = array(); - - $this->formatter = $this->newFormatter(); - - if (!empty($this->registeredVars)) { - $this->injectVariables($this->registeredVars); - } - - $this->sourceParser = $this->parser; // used for error messages - $this->compileBlock($root); - - ob_start(); - $this->formatter->block($this->scope); - $out = ob_get_clean(); - setlocale(LC_NUMERIC, $locale); - return $out; - } - - public function compileFile($fname, $outFname = null) { - if (!is_readable($fname)) { - throw new \Exception('load error: failed to find '.$fname); - } - - $pi = pathinfo($fname); - - $oldImport = $this->importDir; - - $this->importDir = (array)$this->importDir; - $this->importDir[] = $pi['dirname'].'/'; - - $this->addParsedFile($fname); - - $out = $this->compile(file_get_contents($fname), $fname); - - $this->importDir = $oldImport; - - if ($outFname !== null) { - return file_put_contents($outFname, $out); - } - - return $out; - } - - /** - * Based on explicit input/output files does a full change check on cache before compiling. - * - * @param string $in - * @param string $out - * @param boolean $force - * @return string Compiled CSS results - * @throws Exception - */ - public function checkedCachedCompile($in, $out, $force = false) { - if (!is_file($in) || !is_readable($in)) { - throw new Exception('Invalid or unreadable input file specified.'); - } - if (is_dir($out) || !is_writable(file_exists($out) ? $out : dirname($out))) { - throw new Exception('Invalid or unwritable output file specified.'); - } - - $outMeta = $out . '.meta'; - $metadata = null; - if (!$force && is_file($outMeta)) { - $metadata = unserialize(file_get_contents($outMeta)); - } - - $output = $this->cachedCompile($metadata ? $metadata : $in); - - if (!$metadata || $metadata['updated'] != $output['updated']) { - $css = $output['compiled']; - unset($output['compiled']); - file_put_contents($out, $css); - file_put_contents($outMeta, serialize($output)); - } else { - $css = file_get_contents($out); - } - - return $css; - } - - // compile only if changed input has changed or output doesn't exist - public function checkedCompile($in, $out) { - if (!is_file($out) || filemtime($in) > filemtime($out)) { - $this->compileFile($in, $out); - return true; - } - return false; - } - - /** - * Execute lessphp on a .less file or a lessphp cache structure - * - * The lessphp cache structure contains information about a specific - * less file having been parsed. It can be used as a hint for future - * calls to determine whether or not a rebuild is required. - * - * The cache structure contains two important keys that may be used - * externally: - * - * compiled: The final compiled CSS - * updated: The time (in seconds) the CSS was last compiled - * - * The cache structure is a plain-ol' PHP associative array and can - * be serialized and unserialized without a hitch. - * - * @param mixed $in Input - * @param bool $force Force rebuild? - * @return array lessphp cache structure - */ - public function cachedCompile($in, $force = false) { - // assume no root - $root = null; - - if (is_string($in)) { - $root = $in; - } elseif (is_array($in) and isset($in['root'])) { - if ($force or ! isset($in['files'])) { - // If we are forcing a recompile or if for some reason the - // structure does not contain any file information we should - // specify the root to trigger a rebuild. - $root = $in['root']; - } elseif (isset($in['files']) and is_array($in['files'])) { - foreach ($in['files'] as $fname => $ftime ) { - if (!file_exists($fname) or filemtime($fname) > $ftime) { - // One of the files we knew about previously has changed - // so we should look at our incoming root again. - $root = $in['root']; - break; - } - } - } - } else { - // TODO: Throw an exception? We got neither a string nor something - // that looks like a compatible lessphp cache structure. - return null; - } - - if ($root !== null) { - // If we have a root value which means we should rebuild. - $out = array(); - $out['root'] = $root; - $out['compiled'] = $this->compileFile($root); - $out['files'] = $this->allParsedFiles(); - $out['updated'] = time(); - return $out; - } else { - // No changes, pass back the structure - // we were given initially. - return $in; - } - - } - - // parse and compile buffer - // This is deprecated - public function parse($str = null, $initialVariables = null) { - if (is_array($str)) { - $initialVariables = $str; - $str = null; - } - - $oldVars = $this->registeredVars; - if ($initialVariables !== null) { - $this->setVariables($initialVariables); - } - - if ($str == null) { - if (empty($this->_parseFile)) { - throw new \Exception("nothing to parse"); - } - - $out = $this->compileFile($this->_parseFile); - } else { - $out = $this->compile($str); - } - - $this->registeredVars = $oldVars; - return $out; - } - - protected function makeParser($name) { - $parser = new lessc_parser($this, $name); - $parser->writeComments = $this->preserveComments; - - return $parser; - } - - public function setFormatter($name) { - $this->formatterName = $name; - } - - protected function newFormatter() { - $className = "lessc_formatter_lessjs"; - if (!empty($this->formatterName)) { - if (!is_string($this->formatterName)) - return $this->formatterName; - $className = "lessc_formatter_$this->formatterName"; - } - - return new $className; - } - - public function setPreserveComments($preserve) { - $this->preserveComments = $preserve; - } - - public function registerFunction($name, $func) { - $this->libFunctions[$name] = $func; - } - - public function unregisterFunction($name) { - unset($this->libFunctions[$name]); - } - - public function setVariables($variables) { - $this->registeredVars = array_merge($this->registeredVars, $variables); - } - - public function unsetVariable($name) { - unset($this->registeredVars[$name]); - } - - public function setImportDir($dirs) { - $this->importDir = (array)$dirs; - } - - public function addImportDir($dir) { - $this->importDir = (array)$this->importDir; - $this->importDir[] = $dir; - } - - public function allParsedFiles() { - return $this->allParsedFiles; - } - - public function addParsedFile($file) { - $this->allParsedFiles[realpath($file)] = filemtime($file); - } - - /** - * Uses the current value of $this->count to show line and line number - */ - public function throwError($msg = null) { - if ($this->sourceLoc >= 0) { - $this->sourceParser->throwError($msg, $this->sourceLoc); - } - throw new \Exception($msg); - } - - // compile file $in to file $out if $in is newer than $out - // returns true when it compiles, false otherwise - public static function ccompile($in, $out, $less = null) { - if ($less === null) { - $less = new self; - } - return $less->checkedCompile($in, $out); - } - - public static function cexecute($in, $force = false, $less = null) { - if ($less === null) { - $less = new self; - } - return $less->cachedCompile($in, $force); - } - - static protected $cssColors = array( - 'aliceblue' => '240,248,255', - 'antiquewhite' => '250,235,215', - 'aqua' => '0,255,255', - 'aquamarine' => '127,255,212', - 'azure' => '240,255,255', - 'beige' => '245,245,220', - 'bisque' => '255,228,196', - 'black' => '0,0,0', - 'blanchedalmond' => '255,235,205', - 'blue' => '0,0,255', - 'blueviolet' => '138,43,226', - 'brown' => '165,42,42', - 'burlywood' => '222,184,135', - 'cadetblue' => '95,158,160', - 'chartreuse' => '127,255,0', - 'chocolate' => '210,105,30', - 'coral' => '255,127,80', - 'cornflowerblue' => '100,149,237', - 'cornsilk' => '255,248,220', - 'crimson' => '220,20,60', - 'cyan' => '0,255,255', - 'darkblue' => '0,0,139', - 'darkcyan' => '0,139,139', - 'darkgoldenrod' => '184,134,11', - 'darkgray' => '169,169,169', - 'darkgreen' => '0,100,0', - 'darkgrey' => '169,169,169', - 'darkkhaki' => '189,183,107', - 'darkmagenta' => '139,0,139', - 'darkolivegreen' => '85,107,47', - 'darkorange' => '255,140,0', - 'darkorchid' => '153,50,204', - 'darkred' => '139,0,0', - 'darksalmon' => '233,150,122', - 'darkseagreen' => '143,188,143', - 'darkslateblue' => '72,61,139', - 'darkslategray' => '47,79,79', - 'darkslategrey' => '47,79,79', - 'darkturquoise' => '0,206,209', - 'darkviolet' => '148,0,211', - 'deeppink' => '255,20,147', - 'deepskyblue' => '0,191,255', - 'dimgray' => '105,105,105', - 'dimgrey' => '105,105,105', - 'dodgerblue' => '30,144,255', - 'firebrick' => '178,34,34', - 'floralwhite' => '255,250,240', - 'forestgreen' => '34,139,34', - 'fuchsia' => '255,0,255', - 'gainsboro' => '220,220,220', - 'ghostwhite' => '248,248,255', - 'gold' => '255,215,0', - 'goldenrod' => '218,165,32', - 'gray' => '128,128,128', - 'green' => '0,128,0', - 'greenyellow' => '173,255,47', - 'grey' => '128,128,128', - 'honeydew' => '240,255,240', - 'hotpink' => '255,105,180', - 'indianred' => '205,92,92', - 'indigo' => '75,0,130', - 'ivory' => '255,255,240', - 'khaki' => '240,230,140', - 'lavender' => '230,230,250', - 'lavenderblush' => '255,240,245', - 'lawngreen' => '124,252,0', - 'lemonchiffon' => '255,250,205', - 'lightblue' => '173,216,230', - 'lightcoral' => '240,128,128', - 'lightcyan' => '224,255,255', - 'lightgoldenrodyellow' => '250,250,210', - 'lightgray' => '211,211,211', - 'lightgreen' => '144,238,144', - 'lightgrey' => '211,211,211', - 'lightpink' => '255,182,193', - 'lightsalmon' => '255,160,122', - 'lightseagreen' => '32,178,170', - 'lightskyblue' => '135,206,250', - 'lightslategray' => '119,136,153', - 'lightslategrey' => '119,136,153', - 'lightsteelblue' => '176,196,222', - 'lightyellow' => '255,255,224', - 'lime' => '0,255,0', - 'limegreen' => '50,205,50', - 'linen' => '250,240,230', - 'magenta' => '255,0,255', - 'maroon' => '128,0,0', - 'mediumaquamarine' => '102,205,170', - 'mediumblue' => '0,0,205', - 'mediumorchid' => '186,85,211', - 'mediumpurple' => '147,112,219', - 'mediumseagreen' => '60,179,113', - 'mediumslateblue' => '123,104,238', - 'mediumspringgreen' => '0,250,154', - 'mediumturquoise' => '72,209,204', - 'mediumvioletred' => '199,21,133', - 'midnightblue' => '25,25,112', - 'mintcream' => '245,255,250', - 'mistyrose' => '255,228,225', - 'moccasin' => '255,228,181', - 'navajowhite' => '255,222,173', - 'navy' => '0,0,128', - 'oldlace' => '253,245,230', - 'olive' => '128,128,0', - 'olivedrab' => '107,142,35', - 'orange' => '255,165,0', - 'orangered' => '255,69,0', - 'orchid' => '218,112,214', - 'palegoldenrod' => '238,232,170', - 'palegreen' => '152,251,152', - 'paleturquoise' => '175,238,238', - 'palevioletred' => '219,112,147', - 'papayawhip' => '255,239,213', - 'peachpuff' => '255,218,185', - 'peru' => '205,133,63', - 'pink' => '255,192,203', - 'plum' => '221,160,221', - 'powderblue' => '176,224,230', - 'purple' => '128,0,128', - 'red' => '255,0,0', - 'rosybrown' => '188,143,143', - 'royalblue' => '65,105,225', - 'saddlebrown' => '139,69,19', - 'salmon' => '250,128,114', - 'sandybrown' => '244,164,96', - 'seagreen' => '46,139,87', - 'seashell' => '255,245,238', - 'sienna' => '160,82,45', - 'silver' => '192,192,192', - 'skyblue' => '135,206,235', - 'slateblue' => '106,90,205', - 'slategray' => '112,128,144', - 'slategrey' => '112,128,144', - 'snow' => '255,250,250', - 'springgreen' => '0,255,127', - 'steelblue' => '70,130,180', - 'tan' => '210,180,140', - 'teal' => '0,128,128', - 'thistle' => '216,191,216', - 'tomato' => '255,99,71', - 'transparent' => '0,0,0,0', - 'turquoise' => '64,224,208', - 'violet' => '238,130,238', - 'wheat' => '245,222,179', - 'white' => '255,255,255', - 'whitesmoke' => '245,245,245', - 'yellow' => '255,255,0', - 'yellowgreen' => '154,205,50' - ); -} - -// responsible for taking a string of LESS code and converting it into a -// syntax tree -class lessc_parser { - static protected $nextBlockId = 0; // used to uniquely identify blocks - - static protected $precedence = array( - '=<' => 0, - '>=' => 0, - '=' => 0, - '<' => 0, - '>' => 0, - - '+' => 1, - '-' => 1, - '*' => 2, - '/' => 2, - '%' => 2, - ); - - static protected $whitePattern; - static protected $commentMulti; - - static protected $commentSingle = "//"; - static protected $commentMultiLeft = "/*"; - static protected $commentMultiRight = "*/"; - - // regex string to match any of the operators - static protected $operatorString; - - // these properties will supress division unless it's inside parenthases - static protected $supressDivisionProps = - array('/border-radius$/i', '/^font$/i'); - - protected $blockDirectives = array("font-face", "keyframes", "page", "-moz-document", "viewport", "-moz-viewport", "-o-viewport", "-ms-viewport"); - protected $lineDirectives = array("charset"); - - /** - * if we are in parens we can be more liberal with whitespace around - * operators because it must evaluate to a single value and thus is less - * ambiguous. - * - * Consider: - * property1: 10 -5; // is two numbers, 10 and -5 - * property2: (10 -5); // should evaluate to 5 - */ - protected $inParens = false; - - // caches preg escaped literals - static protected $literalCache = array(); - - public function __construct($lessc, $sourceName = null) { - $this->eatWhiteDefault = true; - // reference to less needed for vPrefix, mPrefix, and parentSelector - $this->lessc = $lessc; - - $this->sourceName = $sourceName; // name used for error messages - - $this->writeComments = false; - - if (!self::$operatorString) { - self::$operatorString = - '('.implode('|', array_map(array('lessc', 'preg_quote'), - array_keys(self::$precedence))).')'; - - $commentSingle = lessc::preg_quote(self::$commentSingle); - $commentMultiLeft = lessc::preg_quote(self::$commentMultiLeft); - $commentMultiRight = lessc::preg_quote(self::$commentMultiRight); - - self::$commentMulti = $commentMultiLeft.'.*?'.$commentMultiRight; - self::$whitePattern = '/'.$commentSingle.'[^\n]*\s*|('.self::$commentMulti.')\s*|\s+/Ais'; - } - } - - public function parse($buffer) { - $this->count = 0; - $this->line = 1; - - $this->env = null; // block stack - $this->buffer = $this->writeComments ? $buffer : $this->removeComments($buffer); - $this->pushSpecialBlock("root"); - $this->eatWhiteDefault = true; - $this->seenComments = array(); - - // trim whitespace on head - // if (preg_match('/^\s+/', $this->buffer, $m)) { - // $this->line += substr_count($m[0], "\n"); - // $this->buffer = ltrim($this->buffer); - // } - $this->whitespace(); - - // parse the entire file - while (false !== $this->parseChunk()); - - if ($this->count != strlen($this->buffer)) - $this->throwError(); - - // TODO report where the block was opened - if ( !property_exists($this->env, 'parent') || !is_null($this->env->parent) ) - throw new \Exception('parse error: unclosed block'); - - return $this->env; - } - - /** - * Parse a single chunk off the head of the buffer and append it to the - * current parse environment. - * Returns false when the buffer is empty, or when there is an error. - * - * This function is called repeatedly until the entire document is - * parsed. - * - * This parser is most similar to a recursive descent parser. Single - * functions represent discrete grammatical rules for the language, and - * they are able to capture the text that represents those rules. - * - * Consider the function lessc::keyword(). (all parse functions are - * structured the same) - * - * The function takes a single reference argument. When calling the - * function it will attempt to match a keyword on the head of the buffer. - * If it is successful, it will place the keyword in the referenced - * argument, advance the position in the buffer, and return true. If it - * fails then it won't advance the buffer and it will return false. - * - * All of these parse functions are powered by lessc::match(), which behaves - * the same way, but takes a literal regular expression. Sometimes it is - * more convenient to use match instead of creating a new function. - * - * Because of the format of the functions, to parse an entire string of - * grammatical rules, you can chain them together using &&. - * - * But, if some of the rules in the chain succeed before one fails, then - * the buffer position will be left at an invalid state. In order to - * avoid this, lessc::seek() is used to remember and set buffer positions. - * - * Before parsing a chain, use $s = $this->seek() to remember the current - * position into $s. Then if a chain fails, use $this->seek($s) to - * go back where we started. - */ - protected function parseChunk() { - if (empty($this->buffer)) return false; - $s = $this->seek(); - - if ($this->whitespace()) { - return true; - } - - // setting a property - if ($this->keyword($key) && $this->assign() && - $this->propertyValue($value, $key) && $this->end()) - { - $this->append(array('assign', $key, $value), $s); - return true; - } else { - $this->seek($s); - } - - - // look for special css blocks - if ($this->literal('@', false)) { - $this->count--; - - // media - if ($this->literal('@media')) { - if (($this->mediaQueryList($mediaQueries) || true) - && $this->literal('{')) - { - $media = $this->pushSpecialBlock("media"); - $media->queries = is_null($mediaQueries) ? array() : $mediaQueries; - return true; - } else { - $this->seek($s); - return false; - } - } - - if ($this->literal("@", false) && $this->keyword($dirName)) { - if ($this->isDirective($dirName, $this->blockDirectives)) { - if (($this->openString("{", $dirValue, null, array(";")) || true) && - $this->literal("{")) - { - $dir = $this->pushSpecialBlock("directive"); - $dir->name = $dirName; - if (isset($dirValue)) $dir->value = $dirValue; - return true; - } - } elseif ($this->isDirective($dirName, $this->lineDirectives)) { - if ($this->propertyValue($dirValue) && $this->end()) { - $this->append(array("directive", $dirName, $dirValue)); - return true; - } - } elseif ($this->literal(":", true)) { - //Ruleset Definition - if (($this->openString("{", $dirValue, null, array(";")) || true) && - $this->literal("{")) - { - $dir = $this->pushBlock($this->fixTags(array("@".$dirName))); - $dir->name = $dirName; - if (isset($dirValue)) $dir->value = $dirValue; - return true; - } - } - } - - $this->seek($s); - } - - // setting a variable - if ($this->variable($var) && $this->assign() && - $this->propertyValue($value) && $this->end()) - { - $this->append(array('assign', $var, $value), $s); - return true; - } else { - $this->seek($s); - } - - if ($this->import($importValue)) { - $this->append($importValue, $s); - return true; - } - - // opening parametric mixin - if ($this->tag($tag, true) && $this->argumentDef($args, $isVararg) && - ($this->guards($guards) || true) && - $this->literal('{')) - { - $block = $this->pushBlock($this->fixTags(array($tag))); - $block->args = $args; - $block->isVararg = $isVararg; - if (!empty($guards)) $block->guards = $guards; - return true; - } else { - $this->seek($s); - } - - // opening a simple block - if ($this->tags($tags) && $this->literal('{', false)) { - $tags = $this->fixTags($tags); - $this->pushBlock($tags); - return true; - } else { - $this->seek($s); - } - - // closing a block - if ($this->literal('}', false)) { - try { - $block = $this->pop(); - } catch (\Exception $e) { - $this->seek($s); - $this->throwError($e->getMessage()); - } - - $hidden = false; - if (is_null($block->type)) { - $hidden = true; - if (!isset($block->args)) { - foreach ($block->tags as $tag) { - if (!is_string($tag) || $tag{0} != $this->lessc->mPrefix) { - $hidden = false; - break; - } - } - } - - foreach ($block->tags as $tag) { - if (is_string($tag)) { - $this->env->children[$tag][] = $block; - } - } - } - - if (!$hidden) { - $this->append(array('block', $block), $s); - } - - // this is done here so comments aren't bundled into he block that - // was just closed - $this->whitespace(); - return true; - } - - // mixin - if ($this->mixinTags($tags) && - ($this->argumentDef($argv, $isVararg) || true) && - ($this->keyword($suffix) || true) && $this->end()) - { - $tags = $this->fixTags($tags); - $this->append(array('mixin', $tags, $argv, $suffix), $s); - return true; - } else { - $this->seek($s); - } - - // spare ; - if ($this->literal(';')) return true; - - return false; // got nothing, throw error - } - - protected function isDirective($dirname, $directives) { - // TODO: cache pattern in parser - $pattern = implode("|", - array_map(array("lessc", "preg_quote"), $directives)); - $pattern = '/^(-[a-z-]+-)?(' . $pattern . ')$/i'; - - return preg_match($pattern, $dirname); - } - - protected function fixTags($tags) { - // move @ tags out of variable namespace - foreach ($tags as &$tag) { - if ($tag{0} == $this->lessc->vPrefix) - $tag[0] = $this->lessc->mPrefix; - } - return $tags; - } - - // a list of expressions - protected function expressionList(&$exps) { - $values = array(); - - while ($this->expression($exp)) { - $values[] = $exp; - } - - if (count($values) == 0) return false; - - $exps = lessc::compressList($values, ' '); - return true; - } - - /** - * Attempt to consume an expression. - * @link http://en.wikipedia.org/wiki/Operator-precedence_parser#Pseudo-code - */ - protected function expression(&$out) { - if ($this->value($lhs)) { - $out = $this->expHelper($lhs, 0); - - // look for / shorthand - if (!empty($this->env->supressedDivision)) { - unset($this->env->supressedDivision); - $s = $this->seek(); - if ($this->literal("/") && $this->value($rhs)) { - $out = array("list", "", - array($out, array("keyword", "/"), $rhs)); - } else { - $this->seek($s); - } - } - - return true; - } - return false; - } - - /** - * recursively parse infix equation with $lhs at precedence $minP - */ - protected function expHelper($lhs, $minP) { - $this->inExp = true; - $ss = $this->seek(); - - while (true) { - $whiteBefore = isset($this->buffer[$this->count - 1]) && - ctype_space($this->buffer[$this->count - 1]); - - // If there is whitespace before the operator, then we require - // whitespace after the operator for it to be an expression - $needWhite = $whiteBefore && !$this->inParens; - - if ($this->match(self::$operatorString.($needWhite ? '\s' : ''), $m) && self::$precedence[$m[1]] >= $minP) { - if (!$this->inParens && isset($this->env->currentProperty) && $m[1] == "/" && empty($this->env->supressedDivision)) { - foreach (self::$supressDivisionProps as $pattern) { - if (preg_match($pattern, $this->env->currentProperty)) { - $this->env->supressedDivision = true; - break 2; - } - } - } - - - $whiteAfter = isset($this->buffer[$this->count - 1]) && - ctype_space($this->buffer[$this->count - 1]); - - if (!$this->value($rhs)) break; - - // peek for next operator to see what to do with rhs - if ($this->peek(self::$operatorString, $next) && self::$precedence[$next[1]] > self::$precedence[$m[1]]) { - $rhs = $this->expHelper($rhs, self::$precedence[$next[1]]); - } - - $lhs = array('expression', $m[1], $lhs, $rhs, $whiteBefore, $whiteAfter); - $ss = $this->seek(); - - continue; - } - - break; - } - - $this->seek($ss); - - return $lhs; - } - - // consume a list of values for a property - public function propertyValue(&$value, $keyName = null) { - $values = array(); - - if ($keyName !== null) $this->env->currentProperty = $keyName; - - $s = null; - while ($this->expressionList($v)) { - $values[] = $v; - $s = $this->seek(); - if (!$this->literal(',')) break; - } - - if ($s) $this->seek($s); - - if ($keyName !== null) unset($this->env->currentProperty); - - if (count($values) == 0) return false; - - $value = lessc::compressList($values, ', '); - return true; - } - - protected function parenValue(&$out) { - $s = $this->seek(); - - // speed shortcut - if (isset($this->buffer[$this->count]) && $this->buffer[$this->count] != "(") { - return false; - } - - $inParens = $this->inParens; - if ($this->literal("(") && - ($this->inParens = true) && $this->expression($exp) && - $this->literal(")")) - { - $out = $exp; - $this->inParens = $inParens; - return true; - } else { - $this->inParens = $inParens; - $this->seek($s); - } - - return false; - } - - // a single value - protected function value(&$value) { - $s = $this->seek(); - - // speed shortcut - if (isset($this->buffer[$this->count]) && $this->buffer[$this->count] == "-") { - // negation - if ($this->literal("-", false) && - (($this->variable($inner) && $inner = array("variable", $inner)) || - $this->unit($inner) || - $this->parenValue($inner))) - { - $value = array("unary", "-", $inner); - return true; - } else { - $this->seek($s); - } - } - - if ($this->parenValue($value)) return true; - if ($this->unit($value)) return true; - if ($this->color($value)) return true; - if ($this->func($value)) return true; - if ($this->stringValue($value)) return true; - - if ($this->keyword($word)) { - $value = array('keyword', $word); - return true; - } - - // try a variable - if ($this->variable($var)) { - $value = array('variable', $var); - return true; - } - - // unquote string (should this work on any type? - if ($this->literal("~") && $this->stringValue($str)) { - $value = array("escape", $str); - return true; - } else { - $this->seek($s); - } - - // css hack: \0 - if ($this->literal('\\') && $this->match('([0-9]+)', $m)) { - $value = array('keyword', '\\'.$m[1]); - return true; - } else { - $this->seek($s); - } - - return false; - } - - // an import statement - protected function import(&$out) { - if (!$this->literal('@import')) return false; - - // @import "something.css" media; - // @import url("something.css") media; - // @import url(something.css) media; - - if ($this->propertyValue($value)) { - $out = array("import", $value); - return true; - } - } - - protected function mediaQueryList(&$out) { - if ($this->genericList($list, "mediaQuery", ",", false)) { - $out = $list[2]; - return true; - } - return false; - } - - protected function mediaQuery(&$out) { - $s = $this->seek(); - - $expressions = null; - $parts = array(); - - if (($this->literal("only") && ($only = true) || $this->literal("not") && ($not = true) || true) && $this->keyword($mediaType)) { - $prop = array("mediaType"); - if (isset($only)) $prop[] = "only"; - if (isset($not)) $prop[] = "not"; - $prop[] = $mediaType; - $parts[] = $prop; - } else { - $this->seek($s); - } - - - if (!empty($mediaType) && !$this->literal("and")) { - // ~ - } else { - $this->genericList($expressions, "mediaExpression", "and", false); - if (is_array($expressions)) $parts = array_merge($parts, $expressions[2]); - } - - if (count($parts) == 0) { - $this->seek($s); - return false; - } - - $out = $parts; - return true; - } - - protected function mediaExpression(&$out) { - $s = $this->seek(); - $value = null; - if ($this->literal("(") && - $this->keyword($feature) && - ($this->literal(":") && $this->expression($value) || true) && - $this->literal(")")) - { - $out = array("mediaExp", $feature); - if ($value) $out[] = $value; - return true; - } elseif ($this->variable($variable)) { - $out = array('variable', $variable); - return true; - } - - $this->seek($s); - return false; - } - - // an unbounded string stopped by $end - protected function openString($end, &$out, $nestingOpen=null, $rejectStrs = null) { - $oldWhite = $this->eatWhiteDefault; - $this->eatWhiteDefault = false; - - $stop = array("'", '"', "@{", $end); - $stop = array_map(array("lessc", "preg_quote"), $stop); - // $stop[] = self::$commentMulti; - - if (!is_null($rejectStrs)) { - $stop = array_merge($stop, $rejectStrs); - } - - $patt = '(.*?)('.implode("|", $stop).')'; - - $nestingLevel = 0; - - $content = array(); - while ($this->match($patt, $m, false)) { - if (!empty($m[1])) { - $content[] = $m[1]; - if ($nestingOpen) { - $nestingLevel += substr_count($m[1], $nestingOpen); - } - } - - $tok = $m[2]; - - $this->count-= strlen($tok); - if ($tok == $end) { - if ($nestingLevel == 0) { - break; - } else { - $nestingLevel--; - } - } - - if (($tok == "'" || $tok == '"') && $this->stringValue($str)) { - $content[] = $str; - continue; - } - - if ($tok == "@{" && $this->interpolation($inter)) { - $content[] = $inter; - continue; - } - - if (!empty($rejectStrs) && in_array($tok, $rejectStrs)) { - break; - } - - $content[] = $tok; - $this->count+= strlen($tok); - } - - $this->eatWhiteDefault = $oldWhite; - - if (count($content) == 0) return false; - - // trim the end - if (is_string(end($content))) { - $content[count($content) - 1] = rtrim(end($content)); - } - - $out = array("string", "", $content); - return true; - } - - protected function stringValue(&$out) { - $s = $this->seek(); - if ($this->literal('"', false)) { - $delim = '"'; - } elseif ($this->literal("'", false)) { - $delim = "'"; - } else { - return false; - } - - $content = array(); - - // look for either ending delim , escape, or string interpolation - $patt = '([^\n]*?)(@\{|\\\\|' . - lessc::preg_quote($delim).')'; - - $oldWhite = $this->eatWhiteDefault; - $this->eatWhiteDefault = false; - - while ($this->match($patt, $m, false)) { - $content[] = $m[1]; - if ($m[2] == "@{") { - $this->count -= strlen($m[2]); - if ($this->interpolation($inter, false)) { - $content[] = $inter; - } else { - $this->count += strlen($m[2]); - $content[] = "@{"; // ignore it - } - } elseif ($m[2] == '\\') { - $content[] = $m[2]; - if ($this->literal($delim, false)) { - $content[] = $delim; - } - } else { - $this->count -= strlen($delim); - break; // delim - } - } - - $this->eatWhiteDefault = $oldWhite; - - if ($this->literal($delim)) { - $out = array("string", $delim, $content); - return true; - } - - $this->seek($s); - return false; - } - - protected function interpolation(&$out) { - $oldWhite = $this->eatWhiteDefault; - $this->eatWhiteDefault = true; - - $s = $this->seek(); - if ($this->literal("@{") && - $this->openString("}", $interp, null, array("'", '"', ";")) && - $this->literal("}", false)) - { - $out = array("interpolate", $interp); - $this->eatWhiteDefault = $oldWhite; - if ($this->eatWhiteDefault) $this->whitespace(); - return true; - } - - $this->eatWhiteDefault = $oldWhite; - $this->seek($s); - return false; - } - - protected function unit(&$unit) { - // speed shortcut - if (isset($this->buffer[$this->count])) { - $char = $this->buffer[$this->count]; - if (!ctype_digit($char) && $char != ".") return false; - } - - if ($this->match('([0-9]+(?:\.[0-9]*)?|\.[0-9]+)([%a-zA-Z]+)?', $m)) { - $unit = array("number", $m[1], empty($m[2]) ? "" : $m[2]); - return true; - } - return false; - } - - // a # color - protected function color(&$out) { - if ($this->match('(#(?:[0-9a-f]{8}|[0-9a-f]{6}|[0-9a-f]{3}))', $m)) { - if (strlen($m[1]) > 7) { - $out = array("string", "", array($m[1])); - } else { - $out = array("raw_color", $m[1]); - } - return true; - } - - return false; - } - - // consume an argument definition list surrounded by () - // each argument is a variable name with optional value - // or at the end a ... or a variable named followed by ... - // arguments are separated by , unless a ; is in the list, then ; is the - // delimiter. - protected function argumentDef(&$args, &$isVararg) { - $s = $this->seek(); - if (!$this->literal('(')) return false; - - $values = array(); - $delim = ","; - $method = "expressionList"; - - $isVararg = false; - while (true) { - if ($this->literal("...")) { - $isVararg = true; - break; - } - - if ($this->$method($value)) { - if ($value[0] == "variable") { - $arg = array("arg", $value[1]); - $ss = $this->seek(); - - if ($this->assign() && $this->$method($rhs)) { - $arg[] = $rhs; - } else { - $this->seek($ss); - if ($this->literal("...")) { - $arg[0] = "rest"; - $isVararg = true; - } - } - - $values[] = $arg; - if ($isVararg) break; - continue; - } else { - $values[] = array("lit", $value); - } - } - - - if (!$this->literal($delim)) { - if ($delim == "," && $this->literal(";")) { - // found new delim, convert existing args - $delim = ";"; - $method = "propertyValue"; - - // transform arg list - if (isset($values[1])) { // 2 items - $newList = array(); - foreach ($values as $i => $arg) { - switch($arg[0]) { - case "arg": - if ($i) { - $this->throwError("Cannot mix ; and , as delimiter types"); - } - $newList[] = $arg[2]; - break; - case "lit": - $newList[] = $arg[1]; - break; - case "rest": - $this->throwError("Unexpected rest before semicolon"); - } - } - - $newList = array("list", ", ", $newList); - - switch ($values[0][0]) { - case "arg": - $newArg = array("arg", $values[0][1], $newList); - break; - case "lit": - $newArg = array("lit", $newList); - break; - } - - } elseif ($values) { // 1 item - $newArg = $values[0]; - } - - if ($newArg) { - $values = array($newArg); - } - } else { - break; - } - } - } - - if (!$this->literal(')')) { - $this->seek($s); - return false; - } - - $args = $values; - - return true; - } - - // consume a list of tags - // this accepts a hanging delimiter - protected function tags(&$tags, $simple = false, $delim = ',') { - $tags = array(); - while ($this->tag($tt, $simple)) { - $tags[] = $tt; - if (!$this->literal($delim)) break; - } - if (count($tags) == 0) return false; - - return true; - } - - // list of tags of specifying mixin path - // optionally separated by > (lazy, accepts extra >) - protected function mixinTags(&$tags) { - $tags = array(); - while ($this->tag($tt, true)) { - $tags[] = $tt; - $this->literal(">"); - } - - if (count($tags) == 0) return false; - - return true; - } - - // a bracketed value (contained within in a tag definition) - protected function tagBracket(&$parts, &$hasExpression) { - // speed shortcut - if (isset($this->buffer[$this->count]) && $this->buffer[$this->count] != "[") { - return false; - } - - $s = $this->seek(); - - $hasInterpolation = false; - - if ($this->literal("[", false)) { - $attrParts = array("["); - // keyword, string, operator - while (true) { - if ($this->literal("]", false)) { - $this->count--; - break; // get out early - } - - if ($this->match('\s+', $m)) { - $attrParts[] = " "; - continue; - } - if ($this->stringValue($str)) { - // escape parent selector, (yuck) - foreach ($str[2] as &$chunk) { - $chunk = str_replace($this->lessc->parentSelector, "$&$", $chunk); - } - - $attrParts[] = $str; - $hasInterpolation = true; - continue; - } - - if ($this->keyword($word)) { - $attrParts[] = $word; - continue; - } - - if ($this->interpolation($inter, false)) { - $attrParts[] = $inter; - $hasInterpolation = true; - continue; - } - - // operator, handles attr namespace too - if ($this->match('[|-~\$\*\^=]+', $m)) { - $attrParts[] = $m[0]; - continue; - } - - break; - } - - if ($this->literal("]", false)) { - $attrParts[] = "]"; - foreach ($attrParts as $part) { - $parts[] = $part; - } - $hasExpression = $hasExpression || $hasInterpolation; - return true; - } - $this->seek($s); - } - - $this->seek($s); - return false; - } - - // a space separated list of selectors - protected function tag(&$tag, $simple = false) { - if ($simple) - $chars = '^@,:;{}\][>\(\) "\''; - else - $chars = '^@,;{}["\''; - - $s = $this->seek(); - - $hasExpression = false; - $parts = array(); - while ($this->tagBracket($parts, $hasExpression)); - - $oldWhite = $this->eatWhiteDefault; - $this->eatWhiteDefault = false; - - while (true) { - if ($this->match('(['.$chars.'0-9]['.$chars.']*)', $m)) { - $parts[] = $m[1]; - if ($simple) break; - - while ($this->tagBracket($parts, $hasExpression)); - continue; - } - - if (isset($this->buffer[$this->count]) && $this->buffer[$this->count] == "@") { - if ($this->interpolation($interp)) { - $hasExpression = true; - $interp[2] = true; // don't unescape - $parts[] = $interp; - continue; - } - - if ($this->literal("@")) { - $parts[] = "@"; - continue; - } - } - - if ($this->unit($unit)) { // for keyframes - $parts[] = $unit[1]; - $parts[] = $unit[2]; - continue; - } - - break; - } - - $this->eatWhiteDefault = $oldWhite; - if (!$parts) { - $this->seek($s); - return false; - } - - if ($hasExpression) { - $tag = array("exp", array("string", "", $parts)); - } else { - $tag = trim(implode($parts)); - } - - $this->whitespace(); - return true; - } - - // a css function - protected function func(&$func) { - $s = $this->seek(); - - if ($this->match('(%|[\w\-_][\w\-_:\.]+|[\w_])', $m) && $this->literal('(')) { - $fname = $m[1]; - - $sPreArgs = $this->seek(); - - $args = array(); - while (true) { - $ss = $this->seek(); - // this ugly nonsense is for ie filter properties - if ($this->keyword($name) && $this->literal('=') && $this->expressionList($value)) { - $args[] = array("string", "", array($name, "=", $value)); - } else { - $this->seek($ss); - if ($this->expressionList($value)) { - $args[] = $value; - } - } - - if (!$this->literal(',')) break; - } - $args = array('list', ',', $args); - - if ($this->literal(')')) { - $func = array('function', $fname, $args); - return true; - } elseif ($fname == 'url') { - // couldn't parse and in url? treat as string - $this->seek($sPreArgs); - if ($this->openString(")", $string) && $this->literal(")")) { - $func = array('function', $fname, $string); - return true; - } - } - } - - $this->seek($s); - return false; - } - - // consume a less variable - protected function variable(&$name) { - $s = $this->seek(); - if ($this->literal($this->lessc->vPrefix, false) && - ($this->variable($sub) || $this->keyword($name))) - { - if (!empty($sub)) { - $name = array('variable', $sub); - } else { - $name = $this->lessc->vPrefix.$name; - } - return true; - } - - $name = null; - $this->seek($s); - return false; - } - - /** - * Consume an assignment operator - * Can optionally take a name that will be set to the current property name - */ - protected function assign($name = null) { - if ($name) $this->currentProperty = $name; - return $this->literal(':') || $this->literal('='); - } - - // consume a keyword - protected function keyword(&$word) { - if ($this->match('([\w_\-\*!"][\w\-_"]*)', $m)) { - $word = $m[1]; - return true; - } - return false; - } - - // consume an end of statement delimiter - protected function end() { - if ($this->literal(';', false)) { - return true; - } elseif ($this->count == strlen($this->buffer) || $this->buffer[$this->count] == '}') { - // if there is end of file or a closing block next then we don't need a ; - return true; - } - return false; - } - - protected function guards(&$guards) { - $s = $this->seek(); - - if (!$this->literal("when")) { - $this->seek($s); - return false; - } - - $guards = array(); - - while ($this->guardGroup($g)) { - $guards[] = $g; - if (!$this->literal(",")) break; - } - - if (count($guards) == 0) { - $guards = null; - $this->seek($s); - return false; - } - - return true; - } - - // a bunch of guards that are and'd together - // TODO rename to guardGroup - protected function guardGroup(&$guardGroup) { - $s = $this->seek(); - $guardGroup = array(); - while ($this->guard($guard)) { - $guardGroup[] = $guard; - if (!$this->literal("and")) break; - } - - if (count($guardGroup) == 0) { - $guardGroup = null; - $this->seek($s); - return false; - } - - return true; - } - - protected function guard(&$guard) { - $s = $this->seek(); - $negate = $this->literal("not"); - - if ($this->literal("(") && $this->expression($exp) && $this->literal(")")) { - $guard = $exp; - if ($negate) $guard = array("negate", $guard); - return true; - } - - $this->seek($s); - return false; - } - - /* raw parsing functions */ - - protected function literal($what, $eatWhitespace = null) { - if ($eatWhitespace === null) $eatWhitespace = $this->eatWhiteDefault; - - // shortcut on single letter - if (!isset($what[1]) && isset($this->buffer[$this->count])) { - if ($this->buffer[$this->count] == $what) { - if (!$eatWhitespace) { - $this->count++; - return true; - } - // goes below... - } else { - return false; - } - } - - if (!isset(self::$literalCache[$what])) { - self::$literalCache[$what] = lessc::preg_quote($what); - } - - return $this->match(self::$literalCache[$what], $m, $eatWhitespace); - } - - protected function genericList(&$out, $parseItem, $delim="", $flatten=true) { - $s = $this->seek(); - $items = array(); - while ($this->$parseItem($value)) { - $items[] = $value; - if ($delim) { - if (!$this->literal($delim)) break; - } - } - - if (count($items) == 0) { - $this->seek($s); - return false; - } - - if ($flatten && count($items) == 1) { - $out = $items[0]; - } else { - $out = array("list", $delim, $items); - } - - return true; - } - - - // advance counter to next occurrence of $what - // $until - don't include $what in advance - // $allowNewline, if string, will be used as valid char set - protected function to($what, &$out, $until = false, $allowNewline = false) { - if (is_string($allowNewline)) { - $validChars = $allowNewline; - } else { - $validChars = $allowNewline ? "." : "[^\n]"; - } - if (!$this->match('('.$validChars.'*?)'.lessc::preg_quote($what), $m, !$until)) return false; - if ($until) $this->count -= strlen($what); // give back $what - $out = $m[1]; - return true; - } - - // try to match something on head of buffer - protected function match($regex, &$out, $eatWhitespace = null) { - if ($eatWhitespace === null) $eatWhitespace = $this->eatWhiteDefault; - - $r = '/'.$regex.($eatWhitespace && !$this->writeComments ? '\s*' : '').'/Ais'; - if (preg_match($r, $this->buffer, $out, null, $this->count)) { - $this->count += strlen($out[0]); - if ($eatWhitespace && $this->writeComments) $this->whitespace(); - return true; - } - return false; - } - - // match some whitespace - protected function whitespace() { - if ($this->writeComments) { - $gotWhite = false; - while (preg_match(self::$whitePattern, $this->buffer, $m, null, $this->count)) { - if (isset($m[1]) && empty($this->seenComments[$this->count])) { - $this->append(array("comment", $m[1])); - $this->seenComments[$this->count] = true; - } - $this->count += strlen($m[0]); - $gotWhite = true; - } - return $gotWhite; - } else { - $this->match("", $m); - return strlen($m[0]) > 0; - } - } - - // match something without consuming it - protected function peek($regex, &$out = null, $from=null) { - if (is_null($from)) $from = $this->count; - $r = '/'.$regex.'/Ais'; - $result = preg_match($r, $this->buffer, $out, null, $from); - - return $result; - } - - // seek to a spot in the buffer or return where we are on no argument - protected function seek($where = null) { - if ($where === null) return $this->count; - else $this->count = $where; - return true; - } - - /* misc functions */ - - public function throwError($msg = "parse error", $count = null) { - $count = is_null($count) ? $this->count : $count; - - $line = $this->line + - substr_count(substr($this->buffer, 0, $count), "\n"); - - if (!empty($this->sourceName)) { - $loc = "$this->sourceName on line $line"; - } else { - $loc = "line: $line"; - } - - // TODO this depends on $this->count - if ($this->peek("(.*?)(\n|$)", $m, $count)) { - throw new \Exception("$msg: failed at `$m[1]` $loc"); - } else { - throw new \Exception("$msg: $loc"); - } - } - - protected function pushBlock($selectors=null, $type=null) { - $b = new \stdClass(); - $b->parent = $this->env; - - $b->type = $type; - $b->id = self::$nextBlockId++; - - $b->isVararg = false; // TODO: kill me from here - $b->tags = $selectors; - - $b->props = array(); - $b->children = array(); - - // add a reference to the parser so - // we can access the parser to throw errors - // or retrieve the sourceName of this block. - $b->parser = $this; - - // so we know the position of this block - $b->count = $this->count; - - $this->env = $b; - return $b; - } - - // push a block that doesn't multiply tags - protected function pushSpecialBlock($type) { - return $this->pushBlock(null, $type); - } - - // append a property to the current block - protected function append($prop, $pos = null) { - if ($pos !== null) $prop[-1] = $pos; - $this->env->props[] = $prop; - } - - // pop something off the stack - protected function pop() { - $old = $this->env; - $this->env = $this->env->parent; - return $old; - } - - // remove comments from $text - // todo: make it work for all functions, not just url - protected function removeComments($text) { - $look = array( - 'url(', '//', '/*', '"', "'" - ); - - $out = ''; - $min = null; - while (true) { - // find the next item - foreach ($look as $token) { - $pos = strpos($text, $token); - if ($pos !== false) { - if (!isset($min) || $pos < $min[1]) $min = array($token, $pos); - } - } - - if (is_null($min)) break; - - $count = $min[1]; - $skip = 0; - $newlines = 0; - switch ($min[0]) { - case 'url(': - if (preg_match('/url\(.*?\)/', $text, $m, 0, $count)) - $count += strlen($m[0]) - strlen($min[0]); - break; - case '"': - case "'": - if (preg_match('/'.$min[0].'.*?(?indentLevel = 0; - } - - public function indentStr($n = 0) { - return str_repeat($this->indentChar, max($this->indentLevel + $n, 0)); - } - - public function property($name, $value) { - return $name . $this->assignSeparator . $value . ";"; - } - - protected function isEmpty($block) { - if (empty($block->lines)) { - foreach ($block->children as $child) { - if (!$this->isEmpty($child)) return false; - } - - return true; - } - return false; - } - - public function block($block) { - if ($this->isEmpty($block)) return; - - $inner = $pre = $this->indentStr(); - - $isSingle = !$this->disableSingle && - is_null($block->type) && count($block->lines) == 1; - - if (!empty($block->selectors)) { - $this->indentLevel++; - - if ($this->breakSelectors) { - $selectorSeparator = $this->selectorSeparator . $this->break . $pre; - } else { - $selectorSeparator = $this->selectorSeparator; - } - - echo $pre . - implode($selectorSeparator, $block->selectors); - if ($isSingle) { - echo $this->openSingle; - $inner = ""; - } else { - echo $this->open . $this->break; - $inner = $this->indentStr(); - } - - } - - if (!empty($block->lines)) { - $glue = $this->break.$inner; - echo $inner . implode($glue, $block->lines); - if (!$isSingle && !empty($block->children)) { - echo $this->break; - } - } - - foreach ($block->children as $child) { - $this->block($child); - } - - if (!empty($block->selectors)) { - if (!$isSingle && empty($block->children)) echo $this->break; - - if ($isSingle) { - echo $this->closeSingle . $this->break; - } else { - echo $pre . $this->close . $this->break; - } - - $this->indentLevel--; - } - } -} - -class lessc_formatter_compressed extends lessc_formatter_classic { - public $disableSingle = true; - public $open = "{"; - public $selectorSeparator = ","; - public $assignSeparator = ":"; - public $break = ""; - public $compressColors = true; - - public function indentStr($n = 0) { - return ""; - } -} - -class lessc_formatter_lessjs extends lessc_formatter_classic { - public $disableSingle = true; - public $breakSelectors = true; - public $assignSeparator = ": "; - public $selectorSeparator = ","; -} - - diff --git a/compil.php b/compil.php index e47b5eb..d55d5c6 100755 --- a/compil.php +++ b/compil.php @@ -50,7 +50,7 @@ if (isset($_GET['pw']) AND $_GET['pw'] == $mdp) { // exemple.html > exemple.html.gz // Compresse les fichiers textes statiques HTML & CSS à la racine - exec('bibli/static-compress -c zopfli "*.html" "*.css"'); + exec('/usr/bin/static-compress -c zopfli "*.html" "*.css" "css/*.css"'); } else { echo "Non authentifié·e";