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Version 3, 19 November 2007
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@ -0,0 +1,55 @@
mkht.php is a PHP script for building Gemini, Markdown and HTML/CSS sites from source documents in Gemini, Markdown, HTML, PHP, CSS and Less.
# Usage
Place your pages tree in `/src/*/*.(gmi|md)`.
Optionnal files:
* `/config.ini`
* `/style.less`
* `/logo.png`
* `/`
* `/`
`mkht.php <site path> <destination >`
`destination` is optionnal and can be:
* `dns` if you want local links without exensions
* `onion` if you want links ending with .onion when available
# Input
Pages in `/src`can use Gemini (if using `gmi` extension), Markdown, HTML and PHP.
# Output
* `/*/*.gmi` (if using `.gmi` extension in /src)
* `/*/*.md`
* `/*/*.html`
* `/*/*.gz`
Note that format translation is only done in the following order:
Gemini > Markdown > HTML, which means that the last of these formats you will use will be the first that will be readable by hypertext browsers. (PHP is executed before.)
# External dependencies
* gzip
* find
# Internal libraries used
| Name | Description | Source |
| --------- | ------------------------ | ------------------------------------------ |
| less.php | Less compiler in PHP | |
| parsedown | Markdown compiler in PHP | |
# License
This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with this program. If not, see <>.

@ -0,0 +1,70 @@
# 3.1.0
- [All Changes](
* PHP 8.0 support: Drop use of curly braces for sub-string eval (James D. Forrester)
* Make `Directive::__construct` $rules arg optional (fix PHP 7.4 warning) (Sam Reed)
* ProcessExtends: Improve performance by using a map for selectors and parents (Andrey Legayev)
* build: Run CI tests on PHP 8.0 too (James D. Forrester)
* code: Fix PSR12.Properties.ConstantVisibility.NotFound (Sam Reed)
# 3.0.0
- [All Changes](
- Raise PHP requirement from 7.1 to 7.2.9 (James Forrester)
- build: Upgrade phpunit to ^8.5 and make pass (James Forrester)
- build: Install php-parallel-lint (James Forrester)
- build: Install minus-x and make pass (James Forrester)
# 2.0.0
- [All Changes](
- Relax PHP requirement down to 7.1, from 7.2.9 (Franz Liedke)
- Reflect recent breaking changes properly with the semantic versioning (James Forrester)
# 1.8.2
- [All Changes](
- Require PHP 7.2.9+, up from 5.3+ (James Forrester)
- Release: Update Version.php with the current release ID (COBadger)
- Fix access array offset on value of type null (Michele Locati)
- Fixed test suite on PHP 7.4 (Sergei Morozov)
- docs: Fix 1.8.1 "All changes" link (Timo Tijhof)
# 1.8.1
- [All Changes](
- Another PHP 7.3 compatibility tweak
# 1.8.0
- [All Changes](
- Wikimedia fork
- Supports up to PHP 7.3
- No longer tested against PHP 5, though it's still remains allowed in `composer.json` for HHVM compatibility
- Switched to [semantic versioning](, hence version numbers now use 3 digits
- [All Changes](
- Fix composer.json (PSR-4 was invalid)
- [All Changes](
- set bin/lessc bit executable
- Add 'gettingVariables' method in Less_Parser
- [All Changes](
- Fix realpath issue (windows)
- Set Less_Tree_Call property back to public ( Fix 258 266 267 issues from oyejorge/less.php)
- [All Changes](
- Add indentation option
- Add 'optional' modifier for @import
- fix $color in Exception messages
- don't use set_time_limit when running cli
- take relative-url into account when building the cache filename
- urlArgs should be string no array()
- add bug-report fixtures [#6dc898f](
- fix #269, missing on NameValue type [#a8dac63](
- [All Changes](
- Remove space at beginning of Version.php
- Revert require() paths in test interface

@ -0,0 +1,178 @@
Apache License
Version 2.0, January 2004
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8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
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@ -0,0 +1,314 @@
[![Continuous Integration](](
This is the Wikimedia fork of a PHP port of the official LESS processor <>.
* [About](#about)
* [Installation](#installation)
* [Basic Use](#basic-use)
* [Caching](#caching)
* [Source Maps](#source-maps)
* [Command Line](#command-line)
* [Integration with other projects](#integration-with-other-projects)
* [Transitioning from Leafo/lessphp](#transitioning-from-leafolessphp)
* [Credits](#credits)
The code structure of less.php mirrors that of the official processor which helps us ensure compatibility and allows for easy maintenance.
Please note, there are a few unsupported LESS features:
- Evaluation of JavaScript expressions within back-ticks (for obvious reasons).
- Definition of custom functions.
You can install the library with Composer or manually.
#### Composer
1. [Install Composer](
2. Run `composer require wikimedia/less.php`
#### Manually From Release
Step 1. [Download a release]( and upload the PHP files to your server.
Step 2. Include the library:
require_once '[path to less.php]/lib/Less/Autoloader.php';
Basic Use
#### Parsing Strings
$parser = new Less_Parser();
$parser->parse( '@color: #4D926F; #header { color: @color; } h2 { color: @color; }' );
$css = $parser->getCss();
#### Parsing LESS Files
The parseFile() function takes two arguments:
1. The absolute path of the .less file to be parsed
2. The url root to prepend to any relative image or @import urls in the .less file.
$parser = new Less_Parser();
$parser->parseFile( '/var/www/mysite/bootstrap.less', '' );
$css = $parser->getCss();
#### Handling Invalid LESS
An exception will be thrown if the compiler encounters invalid LESS.
$parser = new Less_Parser();
$parser->parseFile( '/var/www/mysite/bootstrap.less', '' );
$css = $parser->getCss();
}catch(Exception $e){
$error_message = $e->getMessage();
#### Parsing Multiple Sources
less.php can parse multiple sources to generate a single CSS file.
$parser = new Less_Parser();
$parser->parseFile( '/var/www/mysite/bootstrap.less', '/mysite/' );
$parser->parse( '@color: #4D926F; #header { color: @color; } h2 { color: @color; }' );
$css = $parser->getCss();
#### Getting Info About The Parsed Files
less.php can tell you which .less files were imported and parsed.
$parser = new Less_Parser();
$parser->parseFile( '/var/www/mysite/bootstrap.less', '/mysite/' );
$css = $parser->getCss();
$imported_files = $parser->allParsedFiles();
#### Compressing Output
You can tell less.php to remove comments and whitespace to generate minimized CSS files.
$options = array( 'compress'=>true );
$parser = new Less_Parser( $options );
$parser->parseFile( '/var/www/mysite/bootstrap.less', '/mysite/' );
$css = $parser->getCss();
#### Getting Variables
You can use the getVariables() method to get an all variables defined and
their value in a php associative array. Note that LESS has to be previously
$parser = new Less_Parser;
$parser->parseFile( '/var/www/mysite/bootstrap.less');
$css = $parser->getCss();
$variables = $parser->getVariables();
#### Setting Variables
You can use the ModifyVars() method to customize your CSS if you have variables stored in PHP associative arrays.
$parser = new Less_Parser();
$parser->parseFile( '/var/www/mysite/bootstrap.less', '/mysite/' );
$parser->ModifyVars( array('font-size-base'=>'16px') );
$css = $parser->getCss();
#### Import Directories
By default, less.php will look for @imports in the directory of the file passed to parseFile().
If you're using parse() or if @imports reside in different directories, you can tell less.php where to look.
$directories = array( '/var/www/mysite/bootstrap/' => '/mysite/bootstrap/' );
$parser = new Less_Parser();
$parser->SetImportDirs( $directories );
$parser->parseFile( '/var/www/mysite/theme.less', '/mysite/' );
$css = $parser->getCss();
Compiling LESS code into CSS is a time consuming process, caching your results is highly recommended.
#### Caching CSS
Use the Less_Cache class to save and reuse the results of compiled LESS files.
This method will check the modified time and size of each LESS file (including imported files) and regenerate a new CSS file when changes are found.
Note: When changes are found, this method will return a different file name for the new cached content.
$less_files = array( '/var/www/mysite/bootstrap.less' => '/mysite/' );
$options = array( 'cache_dir' => '/var/www/writable_folder' );
$css_file_name = Less_Cache::Get( $less_files, $options );
$compiled = file_get_contents( '/var/www/writable_folder/'.$css_file_name );
#### Caching CSS With Variables
Passing options to Less_Cache::Get()
$less_files = array( '/var/www/mysite/bootstrap.less' => '/mysite/' );
$options = array( 'cache_dir' => '/var/www/writable_folder' );
$variables = array( 'width' => '100px' );
$css_file_name = Less_Cache::Get( $less_files, $options, $variables );
$compiled = file_get_contents( '/var/www/writable_folder/'.$css_file_name );
#### Parser Caching
less.php will save serialized parser data for each .less file if a writable folder is passed to the SetCacheDir() method.
Note: This feature only caches intermediate parsing results to improve the performance of repeated CSS generation.
Your application should cache any CSS generated by less.php.
$options = array('cache_dir'=>'/var/www/writable_folder');
$parser = new Less_Parser( $options );
$parser->parseFile( '/var/www/mysite/bootstrap.less', '/mysite/' );
$css = $parser->getCss();
You can specify the caching technique used by changing the ```cache_method``` option. Supported methods are:
* ```php```: Creates valid PHP files which can be included without any changes (default method).
* ```var_export```: Like "php", but using PHP's ```var_export()``` function without any optimizations.
It's recommended to use "php" instead.
* ```serialize```: Faster, but pretty memory-intense.
* ```callback```: Use custom callback functions to implement your own caching method. Give the "cache_callback_get" and
"cache_callback_set" options with callables (see PHP's ```call_user_func()``` and ```is_callable()``` functions). less.php
will pass the parser object (class ```Less_Parser```), the path to the parsed .less file ("/some/path/to/file.less") and
an identifier that will change every time the .less file is modified. The ```get``` callback must return the ruleset
(an array with ```Less_Tree``` objects) provided as fourth parameter of the ```set``` callback. If something goes wrong,
return ```NULL``` (cache doesn't exist) or ```FALSE```.
Source Maps
Less.php supports v3 sourcemaps
#### Inline
The sourcemap will be appended to the generated CSS file.
$options = array( 'sourceMap' => true );
$parser = new Less_Parser($options);
$parser->parseFile( '/var/www/mysite/bootstrap.less', '/mysite/' );
$css = $parser->getCss();
#### Saving to Map File
$options = array(
'sourceMap' => true,
'sourceMapWriteTo' => '/var/www/mysite/writable_folder/',
'sourceMapURL' => '/mysite/writable_folder/',
$parser = new Less_Parser($options);
$parser->parseFile( '/var/www/mysite/bootstrap.less', '/mysite/' );
$css = $parser->getCss();
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:
$ lessc input.less > output.css
By using the -w flag you can watch a specified input file and have it compile as needed to the output file:
$ lessc -w input.less output.css
Errors from watch mode are written to standard out.
For more help, run `lessc --help`
Integration with other projects
#### Drupal 7
This library can be used as drop-in replacement of lessphp to work with [Drupal 7 less module](
How to install:
1. [Download the less.php source code]( and unzip it so that '' is located at 'sites/all/libraries/lessphp/'.
2. Download and install [Drupal 7 less module]( as usual.
3. That's it :)
#### JBST WordPress theme
JBST has a built-in LESS compiler based on lessphp. Customize your WordPress theme with LESS.
How to use / install:
1. [Download the latest release]( copy the files to your {wordpress/}wp-content/themes folder and activate it.
2. Find the compiler under Appearance > LESS Compiler in your WordPress dashboard
3. Enter your LESS code in the text area and press (re)compile
Use the built-in compiler to:
- set any [Bootstrap]( variable or use Bootstrap's mixins:
-`@navbar-default-color: blue;`
- create a custom button: `.btn-custom {
.button-variant(white; red; blue);
- set any built-in LESS variable: for example `@footer_bg_color: black;` sets the background color of the footer to black
- use built-in mixins: - add a custom font: `.include-custom-font(@family: arial,@font-path, @path: @custom-font-dir, @weight: normal, @style: normal);`
The compiler can also be downloaded as [plugin](
#### WordPress
This simple plugin will simply make the library available to other plugins and themes and can be used as a dependency using the [TGM Library](
How to install:
1. Install the plugin from your WordPress Dashboard:
2. That's it :)
Transitioning from Leafo/lessphp
Projects looking for an easy transition from leafo/lessphp can use the adapter. To use, [Download the less.php source code]( and unzip the files into your project so that the new '' replaces the existing ''.
Note, the 'setPreserveComments' will no longer have any effect on the compiled LESS.
less.php was originally ported to PHP by [Matt Agar]( and then updated by [Martin Jantošovič]( This Wikimedia-maintained fork was split off from [Josh Schmidt's version](

@ -0,0 +1,191 @@
#!/usr/bin/env php
require_once dirname(__FILE__) . '/../lib/Less/Autoloader.php';
// Create our environment
$env = array('compress' => false, 'relativeUrls' => false);
$silent = false;
$watch = false;
$rootpath = '';
// Check for arguments
if (!count($argv)) {
$argv[] = '-h';
// parse arguments
foreach ($argv as $key => $arg) {
if (preg_match('/^--?([a-z][0-9a-z-]*)(?:=([^\s]+))?$/i', $arg, $matches)) {
$option = $matches[1];
$value = isset($matches[2]) ? $matches[2] : false;
switch ($option) {
case 'h':
case 'help':
echo <<<EOD
Usage: lessc [options] sources [destination]
-h, --help Print help (this message) and exit.
-s, --silent Suppress output of error messages.
-v, --version Print version number and exit.
-x, --compress Compress output by removing some whitespaces.
--include-path=PATHS Set include paths. Separated by `:'. Use `;' on Windows.
--strict-imports Force evaluation of imports.
-sm=on|off Turn on or off strict math, where in strict mode, math
--strict-math=on|off requires brackets. This option may default to on and then
be removed in the future.
-su=on|off Allow mixed units, e.g. 1px+1em or 1px*1px which have units
--strict-units=on|off that cannot be represented.
-ru, --relative-urls re-write relative urls to the base less file.
-rp, --rootpath=URL Set rootpath for url rewriting in relative imports and urls.
Works with or without the relative-urls option.
-w, --watch Watch input files for changes.
case 's':
case 'silent':
$silent = true;
case 'w':
case 'watch':
$watch = true;
case 'v':
case 'version':
echo "lessc " . Less_Version::version . " (less.php)\n\n";
case 'rp':
case 'rootpath':
$rootpath = $value;
//parser options
case 'compress':
$env['compress'] = true;
case 'ru':
case 'relative-urls':
$env['relativeUrls'] = true;
case 'su':
case 'strict-units':
$env['strictUnits'] = ($value === 'on');
case 'sm':
case 'strict-math':
$env['strictMath'] = ($value === 'on');
case 'x':
case 'include-path':
$env['import_dirs'] = preg_split('#;|\:#', $value);
if (count($argv) > 1) {
$output = array_pop($argv);
$inputs = $argv;
else {
$inputs = $argv;
$output = false;
if (!count($inputs)) {
echo("lessc: no input files\n");
if ($watch) {
if (!$output) {
echo("lessc: you must specify the output file if --watch is given\n");
$lastAction = 0;
echo("lessc: watching input files\n");
while (1) {
$updated = false;
foreach ($inputs as $input) {
if ($input == '-') {
if (count($inputs) == 1) {
echo("lessc: during watching files is not possible to watch stdin\n");
else {
if (filemtime($input) > $lastAction) {
$updated = true;
if ($updated) {
$lastAction = time();
$parser = new Less_Parser($env);
foreach ($inputs as $input) {
try {
$parser->parseFile($input, $rootpath);
catch (Exception $e) {
echo("lessc: " . $e->getMessage() . " \n");
continue; // Invalid processing
file_put_contents($output, $parser->getCss());
echo("lessc: output file recompiled\n");
else {
$parser = new Less_Parser($env);
foreach ($inputs as $input) {
if ($input == '-') {
$content = file_get_contents('php://stdin');
else {
try {
catch (Exception $e) {
if (!$silent) {
echo("lessc: " . ((string)$e) . " \n");
if ($output) {
file_put_contents($output, $parser->getCss());
else {
echo $parser->getCss();

@ -0,0 +1,274 @@
* This file provides the part of lessphp API (
* to be a drop-in replacement for following products:
* - Drupal 7, by the less module v3.0+ (
* - Symfony 2
// Register autoloader for non-composer installations
if ( !class_exists( 'Less_Parser' ) ) {
require_once __DIR__ . '/lib/Less/Autoloader.php';
class lessc {
static public $VERSION = Less_Version::less_version;
public $importDir = '';
protected $allParsedFiles = array();
protected $libFunctions = array();
protected $registeredVars = array();
private $formatterName;
private $options = array();
public function __construct( $lessc = null, $sourceName = null ) {
public function setImportDir( $dirs ) {
$this->importDir = (array)$dirs;
public function addImportDir( $dir ) {
$this->importDir = (array)$this->importDir;
$this->importDir[] = $dir;
public function setFormatter( $name ) {
$this->formatterName = $name;
public function setPreserveComments( $preserve ) {
public function registerFunction( $name, $func ) {
$this->libFunctions[$name] = $func;
public function unregisterFunction( $name ) {
unset( $this->libFunctions[$name] );
public function setVariables( $variables ) {
foreach ( $variables as $name => $value ) {
$this->setVariable( $name, $value );
public function setVariable( $name, $value ) {
$this->registeredVars[$name] = $value;
public function unsetVariable( $name ) {
unset( $this->registeredVars[$name] );
public function setOptions( $options ) {
foreach ( $options as $name => $value ) {
$this->setOption( $name, $value );
public function setOption( $name, $value ) {
$this->options[$name] = $value;
public function parse( $buffer, $presets = array() ) {
$this->setVariables( $presets );
$parser = new Less_Parser( $this->getOptions() );
$parser->setImportDirs( $this->getImportDirs() );
foreach ( $this->libFunctions as $name => $func ) {
$parser->registerFunction( $name, $func );
$parser->parse( $buffer );
if ( count( $this->registeredVars ) ) {
$parser->ModifyVars( $this->registeredVars );
return $parser->getCss();
protected function getOptions() {
$options = array( 'relativeUrls' => false );
switch ( $this->formatterName ) {
case 'compressed':
$options['compress'] = true;
if ( is_array( $this->options ) ) {
$options = array_merge( $options, $this->options );
return $options;
protected function getImportDirs() {
$dirs_ = (array)$this->importDir;
$dirs = array();
foreach ( $dirs_ as $dir ) {
$dirs[$dir] = '';
return $dirs;
public function compile( $string, $name = null ) {
$oldImport = $this->importDir;
$this->importDir = (array)$this->importDir;
$this->allParsedFiles = array();
$parser = new Less_Parser( $this->getOptions() );
$parser->SetImportDirs( $this->getImportDirs() );
if ( count( $this->registeredVars ) ) {
$parser->ModifyVars( $this->registeredVars );
foreach ( $this->libFunctions as $name => $func ) {
$parser->registerFunction( $name, $func );
$parser->parse( $string );
$out = $parser->getCss();
$parsed = Less_Parser::AllParsedFiles();
foreach ( $parsed as $file ) {
$this->addParsedFile( $file );
$this->importDir = $oldImport;
return $out;
public function compileFile( $fname, $outFname = null ) {
if ( !is_readable( $fname ) ) {