2691 lines
66 KiB
PHP
2691 lines
66 KiB
PHP
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<?php
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/**
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* lessphp v0.3.4-2
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* http://leafo.net/lessphp
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*
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* LESS css compiler, adapted from http://lesscss.org
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*
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* Copyright 2012, Leaf Corcoran <leafot@gmail.com>
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* Licensed under MIT or GPLv3, see LICENSE
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*/
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/**
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* The less compiler and parser.
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*
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* Converting LESS to CSS is a two stage process. First the incoming document
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* must be parsed. Parsing creates a tree in memory that represents the
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* structure of the document. Then, the tree of the document is recursively
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* compiled into the CSS text. The compile step has an implicit step called
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* reduction, where values are brought to their lowest form before being
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* turned to text, eg. mathematical equations are solved, and variables are
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* dereferenced.
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*
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* The parsing stage produces the final structure of the document, for this
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* reason mixins are mixed in and attribute accessors are referenced during
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* the parse step. A reduction is done on the mixed in block as it is mixed in.
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*
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* See the following:
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* - entry point for parsing and compiling: lessc::parse()
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* - parsing: lessc::parseChunk()
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* - compiling: lessc::compileBlock()
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*
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*/
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class lessc {
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public static $VERSION = "v0.3.4-2";
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protected $buffer;
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protected $count;
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protected $line;
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protected $libFunctions = array();
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static protected $nextBlockId = 0;
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static protected $TRUE = array("keyword", "true");
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static protected $FALSE = array("keyword", "false");
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public $indentLevel;
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public $indentChar = ' ';
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protected $env = null;
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protected $allParsedFiles = array();
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public $vPrefix = '@'; // prefix of abstract properties
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public $mPrefix = '$'; // prefix of abstract blocks
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public $imPrefix = '!'; // special character to add !important
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public $parentSelector = '&';
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// set to the parser that generated the current line when compiling
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// so we know how to create error messages
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protected $sourceParser = null;
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static protected $precedence = array(
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'=<' => 0,
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'>=' => 0,
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'=' => 0,
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'<' => 0,
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'>' => 0,
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'+' => 1,
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'-' => 1,
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'*' => 2,
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'/' => 2,
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'%' => 2,
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);
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static protected $operatorString; // regex string to match any of the operators
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// types that have delayed computation
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static protected $dtypes = array('expression', 'variable',
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'function', 'negative', 'list', 'lookup');
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// these properties will supress division unless it's inside parenthases
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static protected $supressDivisionProps = array('/border-radius$/i', '/^font$/i');
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/**
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* @link http://www.w3.org/TR/css3-values/
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*/
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static protected $units = array(
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'em', 'ex', 'px', 'gd', 'rem', 'vw', 'vh', 'vm', 'ch', // Relative length units
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'in', 'cm', 'mm', 'pt', 'pc', // Absolute length units
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'%', // Percentages
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'deg', 'grad', 'rad', 'turn', // Angles
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'ms', 's', // Times
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'Hz', 'kHz', //Frequencies
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);
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public $importDisabled = false;
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public $importDir = '';
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public $compat = false; // lessjs compatibility mode, does nothing right now
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/**
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* if we are in an expression then we don't need to worry about parsing font shorthand
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* $inExp becomes true after the first value in an expression, or if we enter parens
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*/
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protected $inExp = false;
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/**
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* if we are in parens we can be more liberal with whitespace around operators because
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* it must evaluate to a single value and thus is less ambiguous.
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*
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* Consider:
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* property1: 10 -5; // is two numbers, 10 and -5
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* property2: (10 -5); // should evaluate to 5
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*/
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protected $inParens = false;
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/**
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* Parse a single chunk off the head of the buffer and place it.
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* @return false when the buffer is empty, or when there is an error.
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*
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* This function is called repeatedly until the entire document is
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* parsed.
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*
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* This parser is most similar to a recursive descent parser. Single
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* functions represent discrete grammatical rules for the language, and
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* they are able to capture the text that represents those rules.
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*
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* Consider the function lessc::keyword(). (all parse functions are
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* structured the same)
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*
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* The function takes a single reference argument. When calling the
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* function it will attempt to match a keyword on the head of the buffer.
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* If it is successful, it will place the keyword in the referenced
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* argument, advance the position in the buffer, and return true. If it
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* fails then it won't advance the buffer and it will return false.
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*
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* All of these parse functions are powered by lessc::match(), which behaves
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* the same way, but takes a literal regular expression. Sometimes it is
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* more convenient to use match instead of creating a new function.
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*
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* Because of the format of the functions, to parse an entire string of
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* grammatical rules, you can chain them together using &&.
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*
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* But, if some of the rules in the chain succeed before one fails, then
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* the buffer position will be left at an invalid state. In order to
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* avoid this, lessc::seek() is used to remember and set buffer positions.
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*
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* Before parsing a chain, use $s = $this->seek() to remember the current
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* position into $s. Then if a chain fails, use $this->seek($s) to
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* go back where we started.
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*/
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function parseChunk() {
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if (empty($this->buffer)) return false;
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$s = $this->seek();
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// setting a property
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if ($this->keyword($key) && $this->assign() &&
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$this->propertyValue($value, $key) && $this->end())
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{
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$this->append(array('assign', $key, $value), $s);
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return true;
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} else {
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$this->seek($s);
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}
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// look for special css blocks
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if ($this->env->parent == null && $this->literal('@', false)) {
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$this->count--;
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// a font-face block
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if ($this->literal('@font-face') && $this->literal('{')) {
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$b = $this->pushSpecialBlock('@font-face');
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return true;
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} else {
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$this->seek($s);
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}
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// charset
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if ($this->literal('@charset') && $this->propertyValue($value) &&
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$this->end())
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{
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$this->append(array('charset', $value), $s);
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return true;
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} else {
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$this->seek($s);
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}
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// media
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if ($this->literal('@media') && $this->mediaTypes($types) &&
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$this->literal('{'))
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{
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$b = $this->pushSpecialBlock('@media');
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$b->media = $types;
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return true;
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} else {
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$this->seek($s);
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}
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// css animations
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if ($this->match('(@(-[a-z]+-)?keyframes)', $m) &&
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$this->propertyValue($value) && $this->literal('{'))
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{
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$b = $this->pushSpecialBlock(trim($m[0]));
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$b->keyframes = $value;
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return true;
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} else {
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$this->seek($s);
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}
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}
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if (isset($this->env->keyframes)) {
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if ($this->match("(to|from|[0-9]+%)", $m) && $this->literal('{')) {
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$this->pushSpecialBlock($m[1]);
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return true;
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} else {
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$this->seek($s);
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}
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}
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// setting a variable
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if ($this->variable($var) && $this->assign() &&
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$this->propertyValue($value) && $this->end())
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{
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$this->append(array('assign', $var, $value), $s);
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return true;
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} else {
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$this->seek($s);
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}
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if ($this->import($url, $media)) {
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// don't check .css files
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if (empty($media) && substr_compare($url, '.css', -4, 4) !== 0) {
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if ($this->importDisabled) {
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$this->append(array('raw', '/* import disabled */'));
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} else {
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$path = $this->findImport($url);
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if (!is_null($path)) {
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$this->append(array('import', $path), $s);
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return true;
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}
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}
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}
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$this->append(array('raw', '@import url("'.$url.'")'.
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($media ? ' '.$media : '').';'), $s);
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return true;
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}
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// opening parametric mixin
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if ($this->tag($tag, true) && $this->argumentDef($args, $is_vararg) &&
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($this->guards($guards) || true) &&
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$this->literal('{'))
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{
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$block = $this->pushBlock($this->fixTags(array($tag)));
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$block->args = $args;
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$block->is_vararg = $is_vararg;
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if (!empty($guards)) $block->guards = $guards;
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return true;
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} else {
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$this->seek($s);
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}
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// opening a simple block
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if ($this->tags($tags) && $this->literal('{')) {
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$tags = $this->fixTags($tags);
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$this->pushBlock($tags);
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return true;
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} else {
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$this->seek($s);
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}
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// closing a block
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if ($this->literal('}')) {
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try {
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$block = $this->pop();
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} catch (exception $e) {
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$this->seek($s);
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$this->throwError($e->getMessage());
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}
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$hidden = true;
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if (!isset($block->args)) foreach ($block->tags as $tag) {
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if (!is_string($tag) || $tag{0} != $this->mPrefix) {
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$hidden = false;
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break;
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}
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}
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if (!$hidden) $this->append(array('block', $block), $s);
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foreach ($block->tags as $tag) {
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if (is_string($tag)) {
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$this->env->children[$tag][] = $block;
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}
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}
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return true;
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}
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// mixin
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if ($this->mixinTags($tags) &&
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($this->argumentValues($argv) || true) && $this->end())
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{
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$tags = $this->fixTags($tags);
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$this->append(array('mixin', $tags, $argv), $s);
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return true;
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} else {
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$this->seek($s);
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}
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// spare ;
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if ($this->literal(';')) return true;
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return false; // got nothing, throw error
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}
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function fixTags($tags) {
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// move @ tags out of variable namespace
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foreach ($tags as &$tag) {
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if ($tag{0} == $this->vPrefix) $tag[0] = $this->mPrefix;
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}
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return $tags;
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}
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// attempts to find the path of an import url, returns null for css files
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function findImport($url) {
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foreach ((array)$this->importDir as $dir) {
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$full = $dir.(substr($dir, -1) != '/' ? '/' : '').$url;
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if ($this->fileExists($file = $full.'.less') || $this->fileExists($file = $full)) {
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return $file;
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}
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}
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return null;
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}
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function fileExists($name) {
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// sym link workaround
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return file_exists($name) || file_exists(realpath(preg_replace('/\w+\/\.\.\//', '', $name)));
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}
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// a list of expressions
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function expressionList(&$exps) {
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$values = array();
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while ($this->expression($exp)) {
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$values[] = $exp;
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}
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if (count($values) == 0) return false;
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$exps = $this->compressList($values, ' ');
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return true;
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}
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/**
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||
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* Attempt to consume an expression.
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* @link http://en.wikipedia.org/wiki/Operator-precedence_parser#Pseudo-code
|
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*/
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function expression(&$out) {
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$s = $this->seek();
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if ($this->literal('(') && ($this->inExp = $this->inParens = true) && $this->expression($exp) && $this->literal(')')) {
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$lhs = $exp;
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} elseif ($this->seek($s) && $this->value($val)) {
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$lhs = $val;
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} else {
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$this->inParens = $this->inExp = false;
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$this->seek($s);
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return false;
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}
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$out = $this->expHelper($lhs, 0);
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$this->inParens = $this->inExp = false;
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return true;
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}
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||
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||
|
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/**
|
||
|
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* recursively parse infix equation with $lhs at precedence $minP
|
||
|
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*/
|
||
|
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function expHelper($lhs, $minP) {
|
||
|
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$this->inExp = true;
|
||
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$ss = $this->seek();
|
||
|
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|
||
|
|
// if there was whitespace before the operator, then we require whitespace after
|
||
|
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// the operator for it to be a mathematical operator.
|
||
|
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|
||
|
|
$needWhite = false;
|
||
|
|
if (!$this->inParens && preg_match('/\s/', $this->buffer{$this->count - 1})) {
|
||
|
|
$needWhite = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// try to find a valid operator
|
||
|
|
while ($this->match(self::$operatorString.($needWhite ? '\s' : ''), $m) && self::$precedence[$m[1]] >= $minP) {
|
||
|
|
if (!$this->inParens && isset($this->env->currentProperty) && $m[1] == "/") {
|
||
|
|
foreach (self::$supressDivisionProps as $pattern) {
|
||
|
|
if (preg_match($pattern, $this->env->currentProperty)) {
|
||
|
|
$this->env->supressedDivision = true;
|
||
|
|
break 2;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// get rhs
|
||
|
|
$s = $this->seek();
|
||
|
|
$p = $this->inParens;
|
||
|
|
if ($this->literal('(') && ($this->inParens = true) && $this->expression($exp) && $this->literal(')')) {
|
||
|
|
$this->inParens = $p;
|
||
|
|
$rhs = $exp;
|
||
|
|
} else {
|
||
|
|
$this->inParens = $p;
|
||
|
|
if ($this->seek($s) && $this->value($val)) {
|
||
|
|
$rhs = $val;
|
||
|
|
} else {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// peek for next operator to see what to do with rhs
|
||
|
|
if ($this->peek(self::$operatorString, $next) && self::$precedence[$next[1]] > self::$precedence[$m[1]]) {
|
||
|
|
$rhs = $this->expHelper($rhs, self::$precedence[$next[1]]);
|
||
|
|
}
|
||
|
|
|
||
|
|
// don't evaluate yet if it is dynamic
|
||
|
|
if (in_array($rhs[0], self::$dtypes) || in_array($lhs[0], self::$dtypes))
|
||
|
|
$lhs = array('expression', $m[1], $lhs, $rhs);
|
||
|
|
else
|
||
|
|
$lhs = $this->evaluate($m[1], $lhs, $rhs);
|
||
|
|
|
||
|
|
$ss = $this->seek();
|
||
|
|
|
||
|
|
$needWhite = false;
|
||
|
|
if (!$this->inParens && preg_match('/\s/', $this->buffer{$this->count - 1})) {
|
||
|
|
$needWhite = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$this->seek($ss);
|
||
|
|
|
||
|
|
return $lhs;
|
||
|
|
}
|
||
|
|
|
||
|
|
// consume a list of values for a property
|
||
|
|
function propertyValue(&$value, $keyName=null) {
|
||
|
|
$values = array();
|
||
|
|
|
||
|
|
if (!is_null($keyName)) $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 (!is_null($keyName)) unset($this->env->currentProperty);
|
||
|
|
|
||
|
|
if (count($values) == 0) return false;
|
||
|
|
|
||
|
|
$value = $this->compressList($values, ', ');
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// a single value
|
||
|
|
function value(&$value) {
|
||
|
|
// try a unit
|
||
|
|
if ($this->unit($value)) return true;
|
||
|
|
|
||
|
|
// see if there is a negation
|
||
|
|
$s = $this->seek();
|
||
|
|
if ($this->literal('-', false)) {
|
||
|
|
$value = null;
|
||
|
|
if ($this->variable($var)) {
|
||
|
|
$value = array('variable', $var);
|
||
|
|
} elseif ($this->buffer{$this->count} == "(" && $this->expression($exp)) {
|
||
|
|
$value = $exp;
|
||
|
|
} else {
|
||
|
|
$this->seek($s);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!is_null($value)) {
|
||
|
|
$value = array('negative', $value);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$this->seek($s);
|
||
|
|
}
|
||
|
|
|
||
|
|
// accessor
|
||
|
|
// must be done before color
|
||
|
|
// this needs negation too
|
||
|
|
if ($this->accessor($a)) {
|
||
|
|
$a[1] = $this->fixTags($a[1]);
|
||
|
|
$value = $a;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// color
|
||
|
|
if ($this->color($value)) return true;
|
||
|
|
|
||
|
|
// css function
|
||
|
|
// must be done after color
|
||
|
|
if ($this->func($value)) return true;
|
||
|
|
|
||
|
|
// string
|
||
|
|
if ($this->string($tmp, $d)) {
|
||
|
|
$value = array('string', $d.$tmp.$d);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// try a keyword
|
||
|
|
if ($this->keyword($word)) {
|
||
|
|
$value = array('keyword', $word);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// try a variable
|
||
|
|
if ($this->variable($var)) {
|
||
|
|
$value = array('variable', $var);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// unquote string
|
||
|
|
if ($this->literal("~") && $this->string($value, $d)) {
|
||
|
|
$value = array("escape", $value);
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
|
||
|
|
// the spare / when supressing division
|
||
|
|
if (!empty($this->env->supressedDivision)) {
|
||
|
|
unset($this->env->supressedDivision);
|
||
|
|
if ($this->literal("/")) {
|
||
|
|
$value = array('keyword', '/');
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// an import statement
|
||
|
|
function import(&$url, &$media) {
|
||
|
|
$s = $this->seek();
|
||
|
|
if (!$this->literal('@import')) return false;
|
||
|
|
|
||
|
|
// @import "something.css" media;
|
||
|
|
// @import url("something.css") media;
|
||
|
|
// @import url(something.css) media;
|
||
|
|
|
||
|
|
if ($this->literal('url(')) $parens = true; else $parens = false;
|
||
|
|
|
||
|
|
if (!$this->string($url)) {
|
||
|
|
if ($parens && $this->to(')', $url)) {
|
||
|
|
$parens = false; // got em
|
||
|
|
} else {
|
||
|
|
$this->seek($s);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($parens && !$this->literal(')')) {
|
||
|
|
$this->seek($s);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// now the rest is media
|
||
|
|
return $this->to(';', $media, false, true);
|
||
|
|
}
|
||
|
|
|
||
|
|
// a list of media types, very lenient
|
||
|
|
function mediaTypes(&$parts) {
|
||
|
|
$parts = array();
|
||
|
|
while ($this->to("(", $chunk, false, "[^{]")) {
|
||
|
|
$parts[] = array('raw', $chunk."(");
|
||
|
|
$s = $this->seek();
|
||
|
|
if ($this->keyword($name) && $this->assign() &&
|
||
|
|
$this->propertyValue($value))
|
||
|
|
{
|
||
|
|
$parts[] = array('assign', $name, $value);
|
||
|
|
} else {
|
||
|
|
$this->seek($s);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($this->to('{', $rest, true, true)) {
|
||
|
|
$parts[] = array('raw', $rest);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
$parts = null;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// a scoped value accessor
|
||
|
|
// .hello > @scope1 > @scope2['value'];
|
||
|
|
function accessor(&$var) {
|
||
|
|
$s = $this->seek();
|
||
|
|
|
||
|
|
if (!$this->tags($scope, true, '>') || !$this->literal('[')) {
|
||
|
|
$this->seek($s);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// either it is a variable or a property
|
||
|
|
// why is a property wrapped in quotes, who knows!
|
||
|
|
if ($this->variable($name)) {
|
||
|
|
// ~
|
||
|
|
} elseif ($this->literal("'") && $this->keyword($name) && $this->literal("'")) {
|
||
|
|
// .. $this->count is messed up if we wanted to test another access type
|
||
|
|
} else {
|
||
|
|
$this->seek($s);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!$this->literal(']')) {
|
||
|
|
$this->seek($s);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$var = array('lookup', $scope, $name);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// a string
|
||
|
|
function string(&$string, &$d = null) {
|
||
|
|
$s = $this->seek();
|
||
|
|
if ($this->literal('"', false)) {
|
||
|
|
$delim = '"';
|
||
|
|
} elseif ($this->literal("'", false)) {
|
||
|
|
$delim = "'";
|
||
|
|
} else {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!$this->to($delim, $string)) {
|
||
|
|
$this->seek($s);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$d = $delim;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Consume a number and optionally a unit.
|
||
|
|
* Can also consume a font shorthand if it is a simple case.
|
||
|
|
* $allowed restricts the types that are matched.
|
||
|
|
*/
|
||
|
|
function unit(&$unit, $allowed = null) {
|
||
|
|
if (!$allowed) $allowed = self::$units;
|
||
|
|
|
||
|
|
if ($this->match('(-?[0-9]*(\.)?[0-9]+)('.implode('|', $allowed).')?', $m)) {
|
||
|
|
if (!isset($m[3])) $m[3] = 'number';
|
||
|
|
$unit = array($m[3], $m[1]);
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// a # color
|
||
|
|
function color(&$out) {
|
||
|
|
$color = array('color');
|
||
|
|
|
||
|
|
if ($this->match('(#([0-9a-f]{6})|#([0-9a-f]{3}))', $m)) {
|
||
|
|
if (isset($m[3])) {
|
||
|
|
$num = $m[3];
|
||
|
|
$width = 16;
|
||
|
|
} else {
|
||
|
|
$num = $m[2];
|
||
|
|
$width = 256;
|
||
|
|
}
|
||
|
|
|
||
|
|
$num = hexdec($num);
|
||
|
|
foreach (array(3,2,1) as $i) {
|
||
|
|
$t = $num % $width;
|
||
|
|
$num /= $width;
|
||
|
|
|
||
|
|
$color[$i] = $t * (256/$width) + $t * floor(16/$width);
|
||
|
|
}
|
||
|
|
|
||
|
|
$out = $color;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// consume a list of property values delimited by ; and wrapped in ()
|
||
|
|
function argumentValues(&$args, $delim = ',') {
|
||
|
|
$s = $this->seek();
|
||
|
|
if (!$this->literal('(')) return false;
|
||
|
|
|
||
|
|
$values = array();
|
||
|
|
while (true) {
|
||
|
|
if ($this->expressionList($value)) $values[] = $value;
|
||
|
|
if (!$this->literal($delim)) break;
|
||
|
|
else {
|
||
|
|
if ($value == null) $values[] = null;
|
||
|
|
$value = null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!$this->literal(')')) {
|
||
|
|
$this->seek($s);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$args = $values;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// consume an argument definition list surrounded by ()
|
||
|
|
// each argument is a variable name with optional value
|
||
|
|
// or at the end a ... or a variable named followed by ...
|
||
|
|
function argumentDef(&$args, &$is_vararg, $delim = ',') {
|
||
|
|
$s = $this->seek();
|
||
|
|
if (!$this->literal('(')) return false;
|
||
|
|
|
||
|
|
$values = array();
|
||
|
|
|
||
|
|
$is_vararg = false;
|
||
|
|
while (true) {
|
||
|
|
if ($this->literal("...")) {
|
||
|
|
$is_vararg = true;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($this->variable($vname)) {
|
||
|
|
$arg = array("arg", $vname);
|
||
|
|
$ss = $this->seek();
|
||
|
|
if ($this->assign() && $this->expressionList($value)) {
|
||
|
|
$arg[] = $value;
|
||
|
|
} else {
|
||
|
|
$this->seek($ss);
|
||
|
|
if ($this->literal("...")) {
|
||
|
|
$arg[0] = "rest";
|
||
|
|
$is_vararg = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$values[] = $arg;
|
||
|
|
if ($is_vararg) break;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($this->value($literal)) {
|
||
|
|
$values[] = array("lit", $literal);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!$this->literal($delim)) break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!$this->literal(')')) {
|
||
|
|
$this->seek($s);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$args = $values;
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// consume a list of tags
|
||
|
|
// this accepts a hanging delimiter
|
||
|
|
function tags(&$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 >)
|
||
|
|
function mixinTags(&$tags) {
|
||
|
|
$s = $this->seek();
|
||
|
|
$tags = array();
|
||
|
|
while ($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)
|
||
|
|
function tagBracket(&$value) {
|
||
|
|
$s = $this->seek();
|
||
|
|
if ($this->literal('[') && $this->to(']', $c, true) && $this->literal(']', false)) {
|
||
|
|
$value = '['.$c.']';
|
||
|
|
// whitespace?
|
||
|
|
if ($this->match('', $_)) $value .= $_[0];
|
||
|
|
|
||
|
|
// escape parent selector
|
||
|
|
$value = str_replace($this->parentSelector, "&&", $value);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->seek($s);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
function tagExpression(&$value) {
|
||
|
|
$s = $this->seek();
|
||
|
|
if ($this->literal("(") && $this->expression($exp) && $this->literal(")")) {
|
||
|
|
$value = array('exp', $exp);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->seek($s);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// a single tag
|
||
|
|
function tag(&$tag, $simple = false) {
|
||
|
|
if ($simple)
|
||
|
|
$chars = '^,:;{}\][>\(\) "\'';
|
||
|
|
else
|
||
|
|
$chars = '^,;{}["\'';
|
||
|
|
|
||
|
|
if (!$simple && $this->tagExpression($tag)) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
$tag = '';
|
||
|
|
while ($this->tagBracket($first)) $tag .= $first;
|
||
|
|
while ($this->match('(['.$chars.'0-9]['.$chars.']*)', $m)) {
|
||
|
|
$tag .= $m[1];
|
||
|
|
if ($simple) break;
|
||
|
|
|
||
|
|
while ($this->tagBracket($brack)) $tag .= $brack;
|
||
|
|
}
|
||
|
|
$tag = trim($tag);
|
||
|
|
if ($tag == '') return false;
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// a css function
|
||
|
|
function func(&$func) {
|
||
|
|
$s = $this->seek();
|
||
|
|
|
||
|
|
if ($this->match('(%|[\w\-_][\w\-_:\.]+|[\w_])', $m) && $this->literal('(')) {
|
||
|
|
$fname = $m[1];
|
||
|
|
|
||
|
|
$s_pre_args = $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('list', '=', array(array('keyword', $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
|
||
|
|
$this->seek($s_pre_args);
|
||
|
|
if ($this->to(')', $content, true) && $this->literal(')')) {
|
||
|
|
$func = array('function', $fname,array('string', $content));
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->seek($s);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// consume a less variable
|
||
|
|
function variable(&$name) {
|
||
|
|
$s = $this->seek();
|
||
|
|
if ($this->literal($this->vPrefix, false) &&
|
||
|
|
($this->variable($sub) || $this->keyword($name)))
|
||
|
|
{
|
||
|
|
if (!empty($sub)) {
|
||
|
|
$name = array('variable', $sub);
|
||
|
|
} else {
|
||
|
|
$name = $this->vPrefix.$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
|
||
|
|
*/
|
||
|
|
function assign($name = null) {
|
||
|
|
if ($name) $this->currentProperty = $name;
|
||
|
|
return $this->literal(':') || $this->literal('=');
|
||
|
|
}
|
||
|
|
|
||
|
|
// consume a keyword
|
||
|
|
function keyword(&$word) {
|
||
|
|
if ($this->match('([\w_\-\*!"][\w\-_"]*)', $m)) {
|
||
|
|
$word = $m[1];
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// consume an end of statement delimiter
|
||
|
|
function end() {
|
||
|
|
if ($this->literal(';'))
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
|
||
|
|
function guards(&$guards) {
|
||
|
|
$s = $this->seek();
|
||
|
|
|
||
|
|
if (!$this->literal("when")) {
|
||
|
|
$this->seek($s);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$guards = array();
|
||
|
|
|
||
|
|
while ($this->guard_group($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
|
||
|
|
function guard_group(&$guard_group) {
|
||
|
|
$s = $this->seek();
|
||
|
|
$guard_group = array();
|
||
|
|
while ($this->guard($guard)) {
|
||
|
|
$guard_group[] = $guard;
|
||
|
|
if (!$this->literal("and")) break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (count($guard_group) == 0) {
|
||
|
|
$guard_group = null;
|
||
|
|
$this->seek($s);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
|
||
|
|
function compressList($items, $delim) {
|
||
|
|
if (count($items) == 1) return $items[0];
|
||
|
|
else return array('list', $delim, $items);
|
||
|
|
}
|
||
|
|
|
||
|
|
// just do a shallow property merge, seems to be what lessjs does
|
||
|
|
function mergeBlock($target, $from) {
|
||
|
|
$target = clone $target;
|
||
|
|
$target->props = array_merge($target->props, $from->props);
|
||
|
|
return $target;
|
||
|
|
}
|
||
|
|
|
||
|
|
// import all imports into the block
|
||
|
|
function mixImports($block) {
|
||
|
|
$props = array();
|
||
|
|
foreach ($block->props as $prop) {
|
||
|
|
if ($prop[0] == 'import') {
|
||
|
|
list(, $path) = $prop;
|
||
|
|
$this->addParsedFile($path);
|
||
|
|
$child_less = $this->createChild($path);
|
||
|
|
$root = $child_less->parseTree();
|
||
|
|
|
||
|
|
$root->parent = $block;
|
||
|
|
$this->mixImports($root);
|
||
|
|
|
||
|
|
// inject imported blocks into this block, local will overwrite import
|
||
|
|
$block->children = array_merge($root->children, $block->children);
|
||
|
|
|
||
|
|
// splice in all the props
|
||
|
|
foreach ($root->props as $sub_prop) {
|
||
|
|
if (isset($sub_prop[-1])) {
|
||
|
|
// leave a reference to the imported file for error messages
|
||
|
|
$sub_prop[-1] = array($child_less, $sub_prop[-1]);
|
||
|
|
}
|
||
|
|
$props[] = $sub_prop;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$props[] = $prop;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$block->props = $props;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Recursively compiles a block.
|
||
|
|
* @param $block the block
|
||
|
|
* @param $parentTags the tags of the block that contained this one
|
||
|
|
*
|
||
|
|
* A block is analogous to a CSS block in most cases. A single less document
|
||
|
|
* is encapsulated in a block when parsed, but it does not have parent tags
|
||
|
|
* so all of it's children appear on the root level when compiled.
|
||
|
|
*
|
||
|
|
* Blocks are made up of props and children.
|
||
|
|
*
|
||
|
|
* Props are property instructions, array tuples which describe an action
|
||
|
|
* to be taken, eg. write a property, set a variable, mixin a block.
|
||
|
|
*
|
||
|
|
* The children of a block are just all the blocks that are defined within.
|
||
|
|
*
|
||
|
|
* Compiling the block involves pushing a fresh environment on the stack,
|
||
|
|
* and iterating through the props, compiling each one.
|
||
|
|
*
|
||
|
|
* See lessc::compileProp()
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
function compileBlock($block, $parent_tags = null) {
|
||
|
|
$isRoot = $parent_tags == null && $block->tags == null;
|
||
|
|
|
||
|
|
$indent = str_repeat($this->indentChar, $this->indentLevel);
|
||
|
|
|
||
|
|
if (!empty($block->no_multiply)) {
|
||
|
|
$special_block = true;
|
||
|
|
$this->indentLevel++;
|
||
|
|
$tags = array();
|
||
|
|
} else {
|
||
|
|
$special_block = false;
|
||
|
|
|
||
|
|
// evaluate expression tags
|
||
|
|
$tags = null;
|
||
|
|
if (is_array($block->tags)) {
|
||
|
|
$tags = array();
|
||
|
|
foreach ($block->tags as $tag) {
|
||
|
|
if (is_array($tag)) {
|
||
|
|
list(, $value) = $tag;
|
||
|
|
$tags[] = $this->compileValue($this->reduce($value));
|
||
|
|
} else {
|
||
|
|
$tags[] = $tag;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$tags = $this->multiplyTags($parent_tags, $tags);
|
||
|
|
}
|
||
|
|
|
||
|
|
$env = $this->pushEnv();
|
||
|
|
$env->nameDepth = array();
|
||
|
|
|
||
|
|
$lines = array();
|
||
|
|
$blocks = array();
|
||
|
|
$this->mixImports($block);
|
||
|
|
foreach ($block->props as $prop) {
|
||
|
|
$this->compileProp($prop, $block, $tags, $lines, $blocks);
|
||
|
|
}
|
||
|
|
|
||
|
|
$block->scope = $env;
|
||
|
|
|
||
|
|
$this->pop();
|
||
|
|
|
||
|
|
$nl = $isRoot ? "\n".$indent :
|
||
|
|
"\n".$indent.$this->indentChar;
|
||
|
|
|
||
|
|
ob_start();
|
||
|
|
|
||
|
|
if ($special_block) {
|
||
|
|
$this->indentLevel--;
|
||
|
|
if (isset($block->media)) {
|
||
|
|
echo $this->compileMedia($block);
|
||
|
|
} elseif (isset($block->keyframes)) {
|
||
|
|
echo $block->tags[0]." ".
|
||
|
|
$this->compileValue($this->reduce($block->keyframes));
|
||
|
|
} else {
|
||
|
|
list($name) = $block->tags;
|
||
|
|
echo $indent.$name;
|
||
|
|
}
|
||
|
|
|
||
|
|
echo ' {'.(count($lines) > 0 ? $nl : "\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
// dump it
|
||
|
|
if (count($lines) > 0) {
|
||
|
|
if (!$special_block && !$isRoot) {
|
||
|
|
echo $indent.implode(", ", $tags);
|
||
|
|
if (count($lines) > 1) echo " {".$nl;
|
||
|
|
else echo " { ";
|
||
|
|
}
|
||
|
|
|
||
|
|
echo implode($nl, $lines);
|
||
|
|
|
||
|
|
if (!$special_block && !$isRoot) {
|
||
|
|
if (count($lines) > 1) echo "\n".$indent."}\n";
|
||
|
|
else echo " }\n";
|
||
|
|
} else echo "\n";
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($blocks as $b) echo $b;
|
||
|
|
|
||
|
|
if ($special_block) {
|
||
|
|
echo $indent."}\n";
|
||
|
|
}
|
||
|
|
|
||
|
|
return ob_get_clean();
|
||
|
|
}
|
||
|
|
|
||
|
|
// find the fully qualified tags for a block and its parent's tags
|
||
|
|
function multiplyTags($parents, $current) {
|
||
|
|
if ($parents == null) return $current;
|
||
|
|
|
||
|
|
$tags = array();
|
||
|
|
foreach ($parents as $ptag) {
|
||
|
|
foreach ($current as $tag) {
|
||
|
|
// inject parent in place of parent selector, ignoring escaped values
|
||
|
|
$count = 0;
|
||
|
|
$parts = explode("&&", $tag);
|
||
|
|
|
||
|
|
foreach ($parts as $i => $chunk) {
|
||
|
|
$parts[$i] = str_replace($this->parentSelector, $ptag, $chunk, $c);
|
||
|
|
$count += $c;
|
||
|
|
}
|
||
|
|
|
||
|
|
$tag = implode("&", $parts);
|
||
|
|
|
||
|
|
if ($count > 0) {
|
||
|
|
$tags[] = trim($tag);
|
||
|
|
} else {
|
||
|
|
$tags[] = trim($ptag . ' ' . $tag);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $tags;
|
||
|
|
}
|
||
|
|
|
||
|
|
function eq($left, $right) {
|
||
|
|
return $left == $right;
|
||
|
|
}
|
||
|
|
|
||
|
|
function patternMatch($block, $callingArgs) {
|
||
|
|
// match the guards if it has them
|
||
|
|
// any one of the groups must have all its guards pass for a match
|
||
|
|
if (!empty($block->guards)) {
|
||
|
|
$group_passed = false;
|
||
|
|
foreach ($block->guards as $guard_group) {
|
||
|
|
foreach ($guard_group as $guard) {
|
||
|
|
$this->pushEnv();
|
||
|
|
$this->zipSetArgs($block->args, $callingArgs);
|
||
|
|
|
||
|
|
$negate = false;
|
||
|
|
if ($guard[0] == "negate") {
|
||
|
|
$guard = $guard[1];
|
||
|
|
$negate = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
$passed = $this->reduce($guard) == self::$TRUE;
|
||
|
|
if ($negate) $passed = !$passed;
|
||
|
|
|
||
|
|
$this->pop();
|
||
|
|
|
||
|
|
if ($passed) {
|
||
|
|
$group_passed = true;
|
||
|
|
} else {
|
||
|
|
$group_passed = false;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($group_passed) break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!$group_passed) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$numCalling = count($callingArgs);
|
||
|
|
|
||
|
|
if (empty($block->args)) {
|
||
|
|
return $block->is_vararg || $numCalling == 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
$i = -1; // no args
|
||
|
|
// try to match by arity or by argument literal
|
||
|
|
foreach ($block->args as $i => $arg) {
|
||
|
|
switch ($arg[0]) {
|
||
|
|
case "lit":
|
||
|
|
if (empty($callingArgs[$i]) || !$this->eq($arg[1], $callingArgs[$i])) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case "arg":
|
||
|
|
// no arg and no default value
|
||
|
|
if (!isset($callingArgs[$i]) && !isset($arg[2])) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case "rest":
|
||
|
|
$i--; // rest can be empty
|
||
|
|
break 2;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($block->is_vararg) {
|
||
|
|
return true; // not having enough is handled above
|
||
|
|
} else {
|
||
|
|
$numMatched = $i + 1;
|
||
|
|
// greater than becuase default values always match
|
||
|
|
return $numMatched >= $numCalling;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function patternMatchAll($blocks, $callingArgs) {
|
||
|
|
$matches = null;
|
||
|
|
foreach ($blocks as $block) {
|
||
|
|
if ($this->patternMatch($block, $callingArgs)) {
|
||
|
|
$matches[] = $block;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $matches;
|
||
|
|
}
|
||
|
|
|
||
|
|
// attempt to find blocks matched by path and args
|
||
|
|
function findBlocks($search_in, $path, $args, $seen=array()) {
|
||
|
|
if ($search_in == null) return null;
|
||
|
|
if (isset($seen[$search_in->id])) return null;
|
||
|
|
$seen[$search_in->id] = true;
|
||
|
|
|
||
|
|
$name = $path[0];
|
||
|
|
|
||
|
|
if (isset($search_in->children[$name])) {
|
||
|
|
$blocks = $search_in->children[$name];
|
||
|
|
if (count($path) == 1) {
|
||
|
|
$matches = $this->patternMatchAll($blocks, $args);
|
||
|
|
if (!empty($matches)) {
|
||
|
|
// This will return all blocks that match in the closest
|
||
|
|
// scope that has any matching block, like lessjs
|
||
|
|
return $matches;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
return $this->findBlocks($blocks[0],
|
||
|
|
array_slice($path, 1), $args, $seen);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($search_in->parent === $search_in) return null;
|
||
|
|
return $this->findBlocks($search_in->parent, $path, $args, $seen);
|
||
|
|
}
|
||
|
|
|
||
|
|
// sets all argument names in $args to either the default value
|
||
|
|
// or the one passed in through $values
|
||
|
|
function zipSetArgs($args, $values) {
|
||
|
|
$i = 0;
|
||
|
|
$assigned_values = array();
|
||
|
|
foreach ($args as $a) {
|
||
|
|
if ($a[0] == "arg") {
|
||
|
|
if ($i < count($values) && !is_null($values[$i])) {
|
||
|
|
$value = $values[$i];
|
||
|
|
} elseif (isset($a[2])) {
|
||
|
|
$value = $a[2];
|
||
|
|
} else $value = null;
|
||
|
|
|
||
|
|
$value = $this->reduce($value);
|
||
|
|
$this->set($a[1], $value);
|
||
|
|
$assigned_values[] = $value;
|
||
|
|
}
|
||
|
|
$i++;
|
||
|
|
}
|
||
|
|
|
||
|
|
// check for a rest
|
||
|
|
$last = end($args);
|
||
|
|
if ($last[0] == "rest") {
|
||
|
|
$rest = array_slice($values, count($args) - 1);
|
||
|
|
$this->set($last[1], $this->reduce(array("list", " ", $rest)));
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->env->arguments = $assigned_values;
|
||
|
|
}
|
||
|
|
|
||
|
|
// compile a prop and update $lines or $blocks appropriately
|
||
|
|
function compileProp($prop, $block, $tags, &$_lines, &$_blocks) {
|
||
|
|
// set error position context
|
||
|
|
if (isset($prop[-1])) {
|
||
|
|
if (is_array($prop[-1])) {
|
||
|
|
list($less, $count) = $prop[-1];
|
||
|
|
$parentParser = $this->sourceParser;
|
||
|
|
$this->sourceParser = $less;
|
||
|
|
$this->count = $count;
|
||
|
|
} else {
|
||
|
|
$this->count = $prop[-1];
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$this->count = -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
switch ($prop[0]) {
|
||
|
|
case 'assign':
|
||
|
|
list(, $name, $value) = $prop;
|
||
|
|
if ($name[0] == $this->vPrefix) {
|
||
|
|
$this->set($name, $value);
|
||
|
|
} else {
|
||
|
|
$_lines[] = "$name:".
|
||
|
|
$this->compileValue($this->reduce($value)).";";
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 'block':
|
||
|
|
list(, $child) = $prop;
|
||
|
|
$_blocks[] = $this->compileBlock($child, $tags);
|
||
|
|
break;
|
||
|
|
case 'mixin':
|
||
|
|
list(, $path, $args) = $prop;
|
||
|
|
|
||
|
|
$args = array_map(array($this, "reduce"), (array)$args);
|
||
|
|
$mixins = $this->findBlocks($block, $path, $args);
|
||
|
|
if (is_null($mixins)) {
|
||
|
|
// echo "failed to find block: ".implode(" > ", $path)."\n";
|
||
|
|
break; // throw error here??
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($mixins as $mixin) {
|
||
|
|
$old_scope = null;
|
||
|
|
if (isset($mixin->parent->scope)) {
|
||
|
|
$old_scope = $this->env;
|
||
|
|
$this->env = $mixin->parent->scope;
|
||
|
|
}
|
||
|
|
|
||
|
|
$have_args = false;
|
||
|
|
if (isset($mixin->args)) {
|
||
|
|
$have_args = true;
|
||
|
|
$this->pushEnv();
|
||
|
|
$this->zipSetArgs($mixin->args, $args);
|
||
|
|
}
|
||
|
|
|
||
|
|
$old_parent = $mixin->parent;
|
||
|
|
if ($mixin != $block) $mixin->parent = $block;
|
||
|
|
|
||
|
|
foreach ($mixin->props as $sub_prop) {
|
||
|
|
$this->compileProp($sub_prop, $mixin, $tags, $_lines, $_blocks);
|
||
|
|
}
|
||
|
|
|
||
|
|
$mixin->parent = $old_parent;
|
||
|
|
|
||
|
|
if ($have_args) $this->pop();
|
||
|
|
|
||
|
|
if ($old_scope) {
|
||
|
|
$this->env = $old_scope;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
case 'raw':
|
||
|
|
$_lines[] = $prop[1];
|
||
|
|
break;
|
||
|
|
case 'charset':
|
||
|
|
list(, $value) = $prop;
|
||
|
|
$_lines[] = '@charset '.$this->compileValue($this->reduce($value)).';';
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
$this->throwError("unknown op: {$prop[0]}\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
if (isset($parentParser)) {
|
||
|
|
$this->sourceParser = $parentParser;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Compiles a primitive value into a CSS property value.
|
||
|
|
*
|
||
|
|
* Values in lessphp are typed by being wrapped in arrays, their format is
|
||
|
|
* typically:
|
||
|
|
*
|
||
|
|
* array(type, contents [, additional_contents]*)
|
||
|
|
*
|
||
|
|
* Will not work on non reduced values (expressions, variables, etc)
|
||
|
|
*/
|
||
|
|
function compileValue($value) {
|
||
|
|
switch ($value[0]) {
|
||
|
|
case 'list':
|
||
|
|
// [1] - delimiter
|
||
|
|
// [2] - array of values
|
||
|
|
return implode($value[1], array_map(array($this, 'compileValue'), $value[2]));
|
||
|
|
case 'keyword':
|
||
|
|
// [1] - the keyword
|
||
|
|
case 'number':
|
||
|
|
// [1] - the number
|
||
|
|
return $value[1];
|
||
|
|
case 'escape':
|
||
|
|
case 'string':
|
||
|
|
// [1] - contents of string (includes quotes)
|
||
|
|
|
||
|
|
// search for inline variables to replace
|
||
|
|
$replace = array();
|
||
|
|
if (preg_match_all('/'.$this->preg_quote($this->vPrefix).'\{([\w-_][0-9\w-_]*)\}/', $value[1], $m)) {
|
||
|
|
foreach ($m[1] as $name) {
|
||
|
|
if (!isset($replace[$name]))
|
||
|
|
$replace[$name] = $this->compileValue($this->reduce(array('variable', $this->vPrefix . $name)));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($replace as $var=>$val) {
|
||
|
|
if ($this->quoted($val)) {
|
||
|
|
$val = substr($val, 1, -1);
|
||
|
|
}
|
||
|
|
$value[1] = str_replace($this->vPrefix. '{'.$var.'}', $val, $value[1]);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $value[1];
|
||
|
|
case 'color':
|
||
|
|
// [1] - red component (either number for 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].')';
|
||
|
|
}
|
||
|
|
return sprintf("#%02x%02x%02x", $r, $g, $b);
|
||
|
|
case 'function':
|
||
|
|
// [1] - function name
|
||
|
|
// [2] - some array value representing arguments, either ['string', value] or ['list', ',', values[]]
|
||
|
|
|
||
|
|
// see if function evaluates to something else
|
||
|
|
$value = $this->reduce($value);
|
||
|
|
if ($value[0] == 'function') {
|
||
|
|
return $value[1].'('.$this->compileValue($value[2]).')';
|
||
|
|
}
|
||
|
|
else return $this->compileValue($value);
|
||
|
|
default: // assumed to be unit
|
||
|
|
return $value[1].$value[0];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function compileMedia($block) {
|
||
|
|
$mediaParts = array();
|
||
|
|
foreach ($block->media as $part) {
|
||
|
|
if ($part[0] == "raw") {
|
||
|
|
$mediaParts[] = $part[1];
|
||
|
|
} elseif ($part[0] == "assign") {
|
||
|
|
list(, $propName, $propVal) = $part;
|
||
|
|
$mediaParts[] = "$propName: ".
|
||
|
|
$this->compileValue($this->reduce($propVal));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return "@media ".trim(implode($mediaParts));
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_isnumber($value) {
|
||
|
|
return $this->toBool(is_numeric($value[1]));
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_isstring($value) {
|
||
|
|
return $this->toBool($value[0] == "string");
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_iscolor($value) {
|
||
|
|
return $this->toBool($this->coerceColor($value));
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_iskeyword($value) {
|
||
|
|
return $this->toBool($value[0] == "keyword");
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_ispixel($value) {
|
||
|
|
return $this->toBool($value[0] == "px");
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_ispercentage($value) {
|
||
|
|
return $this->toBool($value[0] == "%");
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_isem($value) {
|
||
|
|
return $this->toBool($value[0] == "em");
|
||
|
|
}
|
||
|
|
|
||
|
|
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 : 0,
|
||
|
|
$color[1],$color[2], $color[3]);
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_argb($color){
|
||
|
|
return $this->lib_rgbahex($color);
|
||
|
|
}
|
||
|
|
|
||
|
|
// utility func to unquote a string
|
||
|
|
function lib_e($arg) {
|
||
|
|
switch ($arg[0]) {
|
||
|
|
case "list":
|
||
|
|
$items = $arg[2];
|
||
|
|
if (isset($items[0])) {
|
||
|
|
return $this->lib_e($items[0]);
|
||
|
|
}
|
||
|
|
return "";
|
||
|
|
case "string":
|
||
|
|
$str = $this->compileValue($arg);
|
||
|
|
return substr($str, 1, -1);
|
||
|
|
default:
|
||
|
|
return $this->compileValue($arg);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib__sprintf($args) {
|
||
|
|
if ($args[0] != "list") return $args;
|
||
|
|
$values = $args[2];
|
||
|
|
$source = $this->reduce(array_shift($values));
|
||
|
|
if ($source[0] != "string") {
|
||
|
|
return $source;
|
||
|
|
}
|
||
|
|
|
||
|
|
$str = $source[1];
|
||
|
|
$i = 0;
|
||
|
|
if (preg_match_all('/%[dsa]/', $str, $m)) {
|
||
|
|
foreach ($m[0] as $match) {
|
||
|
|
$val = isset($values[$i]) ? $this->reduce($values[$i]) : array('keyword', '');
|
||
|
|
$i++;
|
||
|
|
switch ($match[1]) {
|
||
|
|
case "s":
|
||
|
|
if ($val[0] == "string") {
|
||
|
|
$rep = substr($val[1], 1, -1);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
default:
|
||
|
|
$rep = $this->compileValue($val);
|
||
|
|
}
|
||
|
|
$str = preg_replace('/'.$this->preg_quote($match).'/', $rep, $str, 1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return array('string', $str);
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_floor($arg) {
|
||
|
|
return array($arg[0], floor($arg[1]));
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_ceil($arg) {
|
||
|
|
return array($arg[0], ceil($arg[1]));
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_round($arg) {
|
||
|
|
return array($arg[0], round($arg[1]));
|
||
|
|
}
|
||
|
|
|
||
|
|
// is a string surrounded in quotes? returns the quoting char if true
|
||
|
|
function quoted($s) {
|
||
|
|
if (preg_match('/^("|\').*?\1$/', $s, $m))
|
||
|
|
return $m[1];
|
||
|
|
else return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Helper function to get arguments for color functions.
|
||
|
|
* Accepts invalid input, non colors interpreted as being black.
|
||
|
|
*/
|
||
|
|
function colorArgs($args) {
|
||
|
|
if ($args[0] != 'list' || count($args[2]) < 2) {
|
||
|
|
return array(array('color', 0, 0, 0));
|
||
|
|
}
|
||
|
|
list($color, $delta) = $args[2];
|
||
|
|
$color = $this->coerceColor($color);
|
||
|
|
if (is_null($color))
|
||
|
|
$color = array('color', 0, 0, 0);
|
||
|
|
|
||
|
|
$delta = floatval($delta[1]);
|
||
|
|
|
||
|
|
return array($color, $delta);
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_darken($args) {
|
||
|
|
list($color, $delta) = $this->colorArgs($args);
|
||
|
|
|
||
|
|
$hsl = $this->toHSL($color);
|
||
|
|
$hsl[3] = $this->clamp($hsl[3] - $delta, 100);
|
||
|
|
return $this->toRGB($hsl);
|
||
|
|
}
|
||
|
|
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_fadeout($args) {
|
||
|
|
list($color, $delta) = $this->colorArgs($args);
|
||
|
|
$color[4] = $this->clamp((isset($color[4]) ? $color[4] : 1) - $delta/100);
|
||
|
|
return $color;
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_fadein($args) {
|
||
|
|
list($color, $delta) = $this->colorArgs($args);
|
||
|
|
$color[4] = $this->clamp((isset($color[4]) ? $color[4] : 1) + $delta/100);
|
||
|
|
return $color;
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_hue($color) {
|
||
|
|
if ($color[0] != 'color') return 0;
|
||
|
|
$hsl = $this->toHSL($color);
|
||
|
|
return round($hsl[1]);
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_saturation($color) {
|
||
|
|
if ($color[0] != 'color') return 0;
|
||
|
|
$hsl = $this->toHSL($color);
|
||
|
|
return round($hsl[2]);
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_lightness($color) {
|
||
|
|
if ($color[0] != 'color') return 0;
|
||
|
|
$hsl = $this->toHSL($color);
|
||
|
|
return round($hsl[3]);
|
||
|
|
}
|
||
|
|
|
||
|
|
// get the alpha of a color
|
||
|
|
// defaults to 1 for non-colors or colors without an alpha
|
||
|
|
function lib_alpha($color) {
|
||
|
|
if ($color[0] != 'color') return 1;
|
||
|
|
return isset($color[4]) ? $color[4] : 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
// set the alpha of the color
|
||
|
|
function lib_fade($args) {
|
||
|
|
list($color, $alpha) = $this->colorArgs($args);
|
||
|
|
$color[4] = $this->clamp($alpha / 100.0);
|
||
|
|
return $color;
|
||
|
|
}
|
||
|
|
|
||
|
|
function lib_percentage($number) {
|
||
|
|
return array('%', $number[1]*100);
|
||
|
|
}
|
||
|
|
|
||
|
|
// mixes two colors by weight
|
||
|
|
// mix(@color1, @color2, @weight);
|
||
|
|
// http://sass-lang.com/docs/yardoc/Sass/Script/Functions.html#mix-instance_method
|
||
|
|
function lib_mix($args) {
|
||
|
|
if ($args[0] != "list" || count($args[2]) < 3)
|
||
|
|
$this->throwError("mix expects (color1, color2, weight)");
|
||
|
|
|
||
|
|
list($first, $second, $weight) = $args[2];
|
||
|
|
$first = $this->assertColor($first);
|
||
|
|
$second = $this->assertColor($second);
|
||
|
|
|
||
|
|
$first_a = $this->lib_alpha($first);
|
||
|
|
$second_a = $this->lib_alpha($second);
|
||
|
|
$weight = $weight[1] / 100.0;
|
||
|
|
|
||
|
|
$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);
|
||
|
|
}
|
||
|
|
|
||
|
|
function assertColor($value, $error = "expected color value") {
|
||
|
|
$color = $this->coerceColor($value);
|
||
|
|
if (is_null($color)) $this->throwError($error);
|
||
|
|
return $color;
|
||
|
|
}
|
||
|
|
|
||
|
|
function toHSL($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 $out;
|
||
|
|
}
|
||
|
|
|
||
|
|
function toRGB_helper($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 $temp1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Converts a hsl array into a color value in rgb.
|
||
|
|
* Expects H to be in range of 0 to 360, S and L in 0 to 100
|
||
|
|
*/
|
||
|
|
function toRGB($color) {
|
||
|
|
if ($color == '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 $out;
|
||
|
|
}
|
||
|
|
|
||
|
|
function clamp($v, $max = 1, $min = 0) {
|
||
|
|
return min($max, max($min, $v));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Convert the rgb, rgba, hsl color literals of function type
|
||
|
|
* as returned by the parser into values of color type.
|
||
|
|
*/
|
||
|
|
function funcToColor($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 < 4) $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] == '%') $components[] = 255 * ($c[1] / 100);
|
||
|
|
else $components[] = floatval($c[1]);
|
||
|
|
} elseif ($i == 4) {
|
||
|
|
if ($c[0] == '%') $components[] = 1.0 * ($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;
|
||
|
|
}
|
||
|
|
|
||
|
|
function toName($val) {
|
||
|
|
switch($val[0]) {
|
||
|
|
case "string":
|
||
|
|
return substr($val[1], 1, -1);
|
||
|
|
default:
|
||
|
|
return $val[1];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// reduce a delayed type to its final value
|
||
|
|
// dereference variables and solve equations
|
||
|
|
function reduce($var) {
|
||
|
|
// this is done here for infinite loop checking
|
||
|
|
if ($var[0] == "variable") {
|
||
|
|
$key = is_array($var[1]) ?
|
||
|
|
$this->vPrefix.$this->toName($this->reduce($var[1])) : $var[1];
|
||
|
|
|
||
|
|
$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 $out;
|
||
|
|
}
|
||
|
|
|
||
|
|
while (in_array($var[0], self::$dtypes)) {
|
||
|
|
if ($var[0] == 'list') {
|
||
|
|
foreach ($var[2] as &$value) $value = $this->reduce($value);
|
||
|
|
break;
|
||
|
|
} elseif ($var[0] == 'expression') {
|
||
|
|
$var = $this->evaluate($var[1], $var[2], $var[3]);
|
||
|
|
} elseif ($var[0] == 'lookup') {
|
||
|
|
// do accessor here....
|
||
|
|
$var = array('number', 0);
|
||
|
|
} elseif ($var[0] == 'function') {
|
||
|
|
$color = $this->funcToColor($var);
|
||
|
|
if ($color) $var = $color;
|
||
|
|
else {
|
||
|
|
list($_, $name, $args) = $var;
|
||
|
|
if ($name == "%") $name = "_sprintf";
|
||
|
|
$f = isset($this->libFunctions[$name]) ?
|
||
|
|
$this->libFunctions[$name] : array($this, 'lib_'.$name);
|
||
|
|
|
||
|
|
if (is_callable($f)) {
|
||
|
|
if ($args[0] == 'list')
|
||
|
|
$args = $this->compressList($args[2], $args[1]);
|
||
|
|
|
||
|
|
$var = call_user_func($f, $this->reduce($args), $this);
|
||
|
|
|
||
|
|
// convert to a typed value if the result is a php primitive
|
||
|
|
if (is_numeric($var)) $var = array('number', $var);
|
||
|
|
elseif (!is_array($var)) $var = array('keyword', $var);
|
||
|
|
} else {
|
||
|
|
// plain function, reduce args
|
||
|
|
$var[2] = $this->reduce($var[2]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break; // done reducing after a function
|
||
|
|
} elseif ($var[0] == 'negative') {
|
||
|
|
$value = $this->reduce($var[1]);
|
||
|
|
if (is_numeric($value[1])) {
|
||
|
|
$value[1] = -1*$value[1];
|
||
|
|
}
|
||
|
|
$var = $value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $var;
|
||
|
|
}
|
||
|
|
|
||
|
|
function coerceColor($value) {
|
||
|
|
switch($value[0]) {
|
||
|
|
case 'color': return $value;
|
||
|
|
case 'keyword':
|
||
|
|
$name = $value[1];
|
||
|
|
if (isset(self::$cssColors[$name])) {
|
||
|
|
list($r, $g, $b) = explode(',', self::$cssColors[$name]);
|
||
|
|
return array('color', $r, $g, $b);
|
||
|
|
}
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function toBool($a) {
|
||
|
|
if ($a) return self::$TRUE;
|
||
|
|
else return self::$FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
// evaluate an expression
|
||
|
|
function evaluate($op, $left, $right) {
|
||
|
|
$left = $this->reduce($left);
|
||
|
|
$right = $this->reduce($right);
|
||
|
|
|
||
|
|
if ($left_color = $this->coerceColor($left)) {
|
||
|
|
$left = $left_color;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($right_color = $this->coerceColor($right)) {
|
||
|
|
$right = $right_color;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($op == "and") {
|
||
|
|
return $this->toBool($left == self::$TRUE && $right == self::$TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($op == "=") {
|
||
|
|
return $this->toBool($this->eq($left, $right) );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($left[0] == 'color' && $right[0] == 'color') {
|
||
|
|
$out = $this->op_color_color($op, $left, $right);
|
||
|
|
return $out;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($left[0] == 'color') {
|
||
|
|
return $this->op_color_number($op, $left, $right);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($right[0] == 'color') {
|
||
|
|
return $this->op_number_color($op, $left, $right);
|
||
|
|
}
|
||
|
|
|
||
|
|
// concatenate strings
|
||
|
|
if ($op == '+' && $left[0] == 'string') {
|
||
|
|
$append = $this->compileValue($right);
|
||
|
|
if ($this->quoted($append)) $append = substr($append, 1, -1);
|
||
|
|
|
||
|
|
$lhs = $this->compileValue($left);
|
||
|
|
if ($q = $this->quoted($lhs)) $lhs = substr($lhs, 1, -1);
|
||
|
|
if (!$q) $q = '';
|
||
|
|
|
||
|
|
return array('string', $q.$lhs.$append.$q);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($left[0] == 'keyword' || $right[0] == 'keyword' ||
|
||
|
|
$left[0] == 'string' || $right[0] == 'string')
|
||
|
|
{
|
||
|
|
// look for negative op
|
||
|
|
if ($op == '-') $right[1] = '-'.$right[1];
|
||
|
|
return array('keyword', $this->compileValue($left) .' '. $this->compileValue($right));
|
||
|
|
}
|
||
|
|
|
||
|
|
// default to number operation
|
||
|
|
return $this->op_number_number($op, $left, $right);
|
||
|
|
}
|
||
|
|
|
||
|
|
// make sure a color's components don't go out of bounds
|
||
|
|
function fixColor($c) {
|
||
|
|
foreach (range(1, 3) as $i) {
|
||
|
|
if ($c[$i] < 0) $c[$i] = 0;
|
||
|
|
if ($c[$i] > 255) $c[$i] = 255;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $c;
|
||
|
|
}
|
||
|
|
|
||
|
|
function op_number_color($op, $lft, $rgt) {
|
||
|
|
if ($op == '+' || $op = '*') {
|
||
|
|
return $this->op_color_number($op, $rgt, $lft);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function op_color_number($op, $lft, $rgt) {
|
||
|
|
if ($rgt[0] == '%') $rgt[1] /= 100;
|
||
|
|
|
||
|
|
return $this->op_color_color($op, $lft,
|
||
|
|
array_fill(1, count($lft) - 1, $rgt[1]));
|
||
|
|
}
|
||
|
|
|
||
|
|
function op_color_color($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);
|
||
|
|
}
|
||
|
|
|
||
|
|
// operator on two numbers
|
||
|
|
function op_number_number($op, $left, $right) {
|
||
|
|
$type = is_null($left) ? "number" : $left[0];
|
||
|
|
if ($type == "number") $type = $right[0];
|
||
|
|
|
||
|
|
$value = 0;
|
||
|
|
switch ($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($type, $value);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* environment functions */
|
||
|
|
|
||
|
|
// push a new block on the stack, used for parsing
|
||
|
|
function pushBlock($tags) {
|
||
|
|
$b = new stdclass;
|
||
|
|
$b->parent = $this->env;
|
||
|
|
|
||
|
|
$b->id = self::$nextBlockId++;
|
||
|
|
$b->is_vararg = false;
|
||
|
|
$b->tags = $tags;
|
||
|
|
$b->props = array();
|
||
|
|
$b->children = array();
|
||
|
|
|
||
|
|
$this->env = $b;
|
||
|
|
return $b;
|
||
|
|
}
|
||
|
|
|
||
|
|
// push a block that doesn't multiply tags
|
||
|
|
function pushSpecialBlock($name) {
|
||
|
|
$b = $this->pushBlock(array($name));
|
||
|
|
$b->no_multiply = true;
|
||
|
|
return $b;
|
||
|
|
}
|
||
|
|
|
||
|
|
// used for compiliation variable state
|
||
|
|
function pushEnv() {
|
||
|
|
$e = new stdclass;
|
||
|
|
$e->parent = $this->env;
|
||
|
|
|
||
|
|
$this->store = array();
|
||
|
|
|
||
|
|
$this->env = $e;
|
||
|
|
return $e;
|
||
|
|
}
|
||
|
|
|
||
|
|
// pop something off the stack
|
||
|
|
function pop() {
|
||
|
|
$old = $this->env;
|
||
|
|
$this->env = $this->env->parent;
|
||
|
|
return $old;
|
||
|
|
}
|
||
|
|
|
||
|
|
// set something in the current env
|
||
|
|
function set($name, $value) {
|
||
|
|
$this->env->store[$name] = $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
// append an property
|
||
|
|
function append($prop, $pos = null) {
|
||
|
|
if (!is_null($pos)) $prop[-1] = $pos;
|
||
|
|
$this->env->props[] = $prop;
|
||
|
|
}
|
||
|
|
|
||
|
|
// get the highest occurrence entry for a name
|
||
|
|
function get($name) {
|
||
|
|
$current = $this->env;
|
||
|
|
|
||
|
|
$is_arguments = $name == $this->vPrefix . 'arguments';
|
||
|
|
while ($current) {
|
||
|
|
if ($is_arguments && isset($current->arguments)) {
|
||
|
|
return array('list', ' ', $current->arguments);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (isset($current->store[$name]))
|
||
|
|
return $current->store[$name];
|
||
|
|
else
|
||
|
|
$current = $current->parent;
|
||
|
|
}
|
||
|
|
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* raw parsing functions */
|
||
|
|
|
||
|
|
function literal($what, $eatWhitespace = true) {
|
||
|
|
// this is here mainly prevent notice from { } string accessor
|
||
|
|
if ($this->count >= strlen($this->buffer)) return false;
|
||
|
|
|
||
|
|
// shortcut on single letter
|
||
|
|
if (!$eatWhitespace && strlen($what) == 1) {
|
||
|
|
if ($this->buffer{$this->count} == $what) {
|
||
|
|
$this->count++;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
else return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $this->match($this->preg_quote($what), $m, $eatWhitespace);
|
||
|
|
}
|
||
|
|
|
||
|
|
function preg_quote($what) {
|
||
|
|
return preg_quote($what, '/');
|
||
|
|
}
|
||
|
|
|
||
|
|
// advance counter to next occurrence of $what
|
||
|
|
// $until - don't include $what in advance
|
||
|
|
// $allowNewline, if string, will be used as valid char set
|
||
|
|
function to($what, &$out, $until = false, $allowNewline = false) {
|
||
|
|
if (is_string($allowNewline)) {
|
||
|
|
$validChars = $allowNewline;
|
||
|
|
} else {
|
||
|
|
$validChars = $allowNewline ? "." : "[^\n]";
|
||
|
|
}
|
||
|
|
if (!$this->match('('.$validChars.'*?)'.$this->preg_quote($what), $m, !$until)) return false;
|
||
|
|
if ($until) $this->count -= strlen($what); // give back $what
|
||
|
|
$out = $m[1];
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// try to match something on head of buffer
|
||
|
|
function match($regex, &$out, $eatWhitespace = true) {
|
||
|
|
$r = '/'.$regex.($eatWhitespace ? '\s*' : '').'/Ais';
|
||
|
|
if (preg_match($r, $this->buffer, $out, null, $this->count)) {
|
||
|
|
$this->count += strlen($out[0]);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// match something without consuming it
|
||
|
|
function peek($regex, &$out = null) {
|
||
|
|
$r = '/'.$regex.'/Ais';
|
||
|
|
$result = preg_match($r, $this->buffer, $out, null, $this->count);
|
||
|
|
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
// seek to a spot in the buffer or return where we are on no argument
|
||
|
|
function seek($where = null) {
|
||
|
|
if ($where === null) return $this->count;
|
||
|
|
else $this->count = $where;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Initialize state for a fresh parse
|
||
|
|
*/
|
||
|
|
protected function prepareParser($buff) {
|
||
|
|
$this->env = null;
|
||
|
|
$this->expandStack = array();
|
||
|
|
$this->indentLevel = 0;
|
||
|
|
$this->count = 0;
|
||
|
|
$this->line = 1;
|
||
|
|
|
||
|
|
$this->buffer = $this->removeComments($buff);
|
||
|
|
$this->pushBlock(null); // set up global scope
|
||
|
|
|
||
|
|
// trim whitespace on head
|
||
|
|
if (preg_match('/^\s+/', $this->buffer, $m)) {
|
||
|
|
$this->line += substr_count($m[0], "\n");
|
||
|
|
$this->buffer = ltrim($this->buffer);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// create a child parser (for compiling an import)
|
||
|
|
protected function createChild($fname) {
|
||
|
|
$less = new lessc($fname);
|
||
|
|
$less->importDir = array_merge((array)$less->importDir, (array)$this->importDir);
|
||
|
|
$less->indentChar = $this->indentChar;
|
||
|
|
$less->compat = $this->compat;
|
||
|
|
return $less;
|
||
|
|
}
|
||
|
|
|
||
|
|
// parse code and return intermediate tree
|
||
|
|
public function parseTree($str = null) {
|
||
|
|
$this->prepareParser(is_null($str) ? $this->buffer : $str);
|
||
|
|
while (false !== $this->parseChunk());
|
||
|
|
|
||
|
|
if ($this->count != strlen($this->buffer))
|
||
|
|
$this->throwError();
|
||
|
|
|
||
|
|
if (!is_null($this->env->parent))
|
||
|
|
throw new exception('parse error: unclosed block');
|
||
|
|
|
||
|
|
$root = $this->env;
|
||
|
|
$this->env = null;
|
||
|
|
return $root;
|
||
|
|
}
|
||
|
|
|
||
|
|
// inject array of unparsed strings into environment as variables
|
||
|
|
protected function injectVariables($args) {
|
||
|
|
$this->pushEnv();
|
||
|
|
$parser = new lessc();
|
||
|
|
foreach ($args as $name => $str_value) {
|
||
|
|
if ($name{0} != '@') $name = '@'.$name;
|
||
|
|
$parser->count = 0;
|
||
|
|
$parser->buffer = (string)$str_value;
|
||
|
|
if (!$parser->propertyValue($value)) {
|
||
|
|
throw new Exception("failed to parse passed in variable $name: $str_value");
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->set($name, $value);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// parse and compile buffer
|
||
|
|
function parse($str = null, $initial_variables = null) {
|
||
|
|
$locale = setlocale(LC_NUMERIC, 0);
|
||
|
|
setlocale(LC_NUMERIC, "C");
|
||
|
|
$root = $this->parseTree($str);
|
||
|
|
|
||
|
|
if ($initial_variables) $this->injectVariables($initial_variables);
|
||
|
|
$out = $this->compileBlock($root);
|
||
|
|
setlocale(LC_NUMERIC, $locale);
|
||
|
|
return $out;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Uses the current value of $this->count to show line and line number
|
||
|
|
*/
|
||
|
|
function throwError($msg = 'parse error') {
|
||
|
|
if (!empty($this->sourceParser)) {
|
||
|
|
$this->sourceParser->count = $this->count;
|
||
|
|
return $this->sourceParser->throwError($msg);
|
||
|
|
} elseif ($this->count > 0) {
|
||
|
|
$line = $this->line + substr_count(substr($this->buffer, 0, $this->count), "\n");
|
||
|
|
if (isset($this->fileName)) {
|
||
|
|
$loc = $this->fileName.' on line '.$line;
|
||
|
|
} else {
|
||
|
|
$loc = "line: ".$line;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($this->peek("(.*?)(\n|$)", $m))
|
||
|
|
throw new exception($msg.': failed at `'.$m[1].'` '.$loc);
|
||
|
|
}
|
||
|
|
|
||
|
|
throw new exception($msg);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Initialize any static state, can initialize parser for a file
|
||
|
|
*/
|
||
|
|
function __construct($fname = null, $opts = null) {
|
||
|
|
if (!self::$operatorString) {
|
||
|
|
self::$operatorString =
|
||
|
|
'('.implode('|', array_map(array($this, 'preg_quote'),
|
||
|
|
array_keys(self::$precedence))).')';
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($fname) {
|
||
|
|
if (!is_file($fname)) {
|
||
|
|
throw new Exception('load error: failed to find '.$fname);
|
||
|
|
}
|
||
|
|
$pi = pathinfo($fname);
|
||
|
|
|
||
|
|
$this->fileName = $fname;
|
||
|
|
$this->importDir = $pi['dirname'].'/';
|
||
|
|
$this->buffer = file_get_contents($fname);
|
||
|
|
|
||
|
|
$this->addParsedFile($fname);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public function registerFunction($name, $func) {
|
||
|
|
$this->libFunctions[$name] = $func;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function unregisterFunction($name) {
|
||
|
|
unset($this->libFunctions[$name]);
|
||
|
|
}
|
||
|
|
|
||
|
|
// remove comments from $text
|
||
|
|
// todo: make it work for all functions, not just url
|
||
|
|
function removeComments($text) {
|
||
|
|
$look = array(
|
||
|
|
'url(', '//', '/*', '"', "'"
|
||
|
|
);
|
||
|
|
|
||
|
|
$out = '';
|
||
|
|
$min = null;
|
||
|
|
$done = false;
|
||
|
|
while (true) {
|
||
|
|
// find the next item
|
||
|
|
foreach ($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].'.*?'.$min[0].'/', $text, $m, 0, $count))
|
||
|
|
$count += strlen($m[0]) - 1;
|
||
|
|
break;
|
||
|
|
case '//':
|
||
|
|
$skip = strpos($text, "\n", $count);
|
||
|
|
if ($skip === false) $skip = strlen($text) - $count;
|
||
|
|
else $skip -= $count;
|
||
|
|
break;
|
||
|
|
case '/*':
|
||
|
|
if (preg_match('/\/\*.*?\*\//s', $text, $m, 0, $count)) {
|
||
|
|
$skip = strlen($m[0]);
|
||
|
|
$newlines = substr_count($m[0], "\n");
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($skip == 0) $count += strlen($min[0]);
|
||
|
|
|
||
|
|
$out .= substr($text, 0, $count).str_repeat("\n", $newlines);
|
||
|
|
$text = substr($text, $count + $skip);
|
||
|
|
|
||
|
|
$min = null;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $out.$text;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function allParsedFiles() { return $this->allParsedFiles; }
|
||
|
|
protected function addParsedFile($file) {
|
||
|
|
$this->allParsedFiles[realpath($file)] = filemtime($file);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// compile file $in to file $out if $in is newer than $out
|
||
|
|
// returns true when it compiles, false otherwise
|
||
|
|
public static function ccompile($in, $out) {
|
||
|
|
if (!is_file($out) || filemtime($in) > filemtime($out)) {
|
||
|
|
$less = new lessc($in);
|
||
|
|
file_put_contents($out, $less->parse());
|
||
|
|
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 $force Force rebuild?
|
||
|
|
* @return array lessphp cache structure
|
||
|
|
*/
|
||
|
|
public static function cexecute($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.
|
||
|
|
$less = new lessc($root);
|
||
|
|
$out = array();
|
||
|
|
$out['root'] = $root;
|
||
|
|
$out['compiled'] = $less->parse();
|
||
|
|
$out['files'] = $less->allParsedFiles();
|
||
|
|
$out['updated'] = time();
|
||
|
|
return $out;
|
||
|
|
} else {
|
||
|
|
// No changes, pass back the structure
|
||
|
|
// we were given initially.
|
||
|
|
return $in;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
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',
|
||
|
|
'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'
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|