/libraries/gantry/core/utilities/gantrylesscompiler.class.php
PHP | 3500 lines | 2629 code | 541 blank | 330 comment | 613 complexity | 23659eefffcdc8882ebaed72a07c456d MD5 | raw file
Possible License(s): LGPL-2.1, GPL-2.0, MIT, BSD-3-Clause
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- <?php
- /**
- * @version $Id: gantrylesscompiler.class.php 8061 2013-03-03 00:08:14Z btowles $
- * @author RocketTheme http://www.rockettheme.com
- * @copyright Copyright (C) 2007 - 2013 RocketTheme, LLC
- * @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPLv2 only
- */
- defined('GANTRY_VERSION') or die();
- /**
- * lessphp v0.3.9
- * http://leafo.net/lessphp
- *
- * LESS css compiler, adapted from http://lesscss.org
- *
- * Copyright 2012, Leaf Corcoran <leafot@gmail.com>
- * Licensed under MIT or GPLv3, see LICENSE
- */
- /**
- * The less compiler and parser.
- *
- * Converting LESS to CSS is a three stage process. The incoming file is parsed
- * by `GantryLessCompiler_Parser` into a syntax tree, then it is compiled into another tree
- * representing the CSS structure by `GantryLessCompiler`. The CSS tree is fed into a
- * formatter, like `lessc_formatter` which then outputs CSS as a string.
- *
- * During the first compile, all values are *reduced*, which means that their
- * types are brought to the lowest form before being dump as strings. This
- * handles math equations, variable dereferences, and the like.
- *
- * The `parse` function of `GantryLessCompiler` is the entry point.
- *
- * In summary:
- *
- * The `GantryLessCompiler` class creates an intstance of the parser, feeds it LESS code,
- * then transforms the resulting tree to a CSS tree. This class also holds the
- * evaluation context, such as all available mixins and variables at any given
- * time.
- *
- * The `GantryLessCompiler_Parser` class is only concerned with parsing its input.
- *
- * The `lessc_formatter` takes a CSS tree, and dumps it to a formatted string,
- * handling things like indentation.
- */
- class GantryLessCompiler {
- static public $VERSION = "v0.3.9";
- static protected $TRUE = array("keyword", "true");
- static protected $FALSE = array("keyword", "false");
- protected $libFunctions = array();
- protected $registeredVars = array();
- protected $preserveComments = false;
- public $vPrefix = '@'; // prefix of abstract properties
- public $mPrefix = '$'; // prefix of abstract blocks
- public $parentSelector = '&';
- public $importDisabled = false;
- public $importDir = '';
- protected $numberPrecision = null;
- // set to the parser that generated the current line when compiling
- // so we know how to create error messages
- protected $sourceParser = null;
- protected $sourceLoc = null;
- static public $defaultValue = array("keyword", "");
- static protected $nextImportId = 0; // uniquely identify imports
- // attempts to find the path of an import url, returns null for css files
- protected function findImport($url) {
- foreach ((array)$this->importDir as $dir) {
- $full = $dir.(substr($dir, -1) != '/' ? '/' : '').$url;
- if ($this->fileExists($file = $full.'.less') || $this->fileExists($file = $full)) {
- return $file;
- }
- }
- return null;
- }
- protected function fileExists($name) {
- return is_file($name);
- }
- static public function compressList($items, $delim) {
- if (!isset($items[1]) && isset($items[0])) return $items[0];
- else return array('list', $delim, $items);
- }
- static public function preg_quote($what) {
- return preg_quote($what, '/');
- }
- protected function tryImport($importPath, $parentBlock, $out) {
- if ($importPath[0] == "function" && $importPath[1] == "url") {
- $importPath = $this->flattenList($importPath[2]);
- }
- $str = $this->coerceString($importPath);
- if ($str === null) return false;
- $url = $this->compileValue($this->lib_e($str));
- // don't import if it ends in css
- if (substr_compare($url, '.css', -4, 4) === 0) return false;
- $realPath = $this->findImport($url);
- if ($realPath === null) return false;
- if ($this->importDisabled) {
- return array(false, "/* import disabled */");
- }
- $this->addParsedFile($realPath);
- $parser = $this->makeParser($realPath);
- $contents = file_get_contents($realPath);
- // see if there is a -custom file for any imports
- $custom_file = pathinfo($realPath,PATHINFO_FILENAME).'-custom.'.pathinfo($realPath,PATHINFO_EXTENSION);
- if ($custom_realpath = $this->findImport($custom_file))
- {
- $contents .= file_get_contents($custom_realpath);
- $this->addParsedFile($custom_realpath);
- }
- $root = $parser->parse($contents);
- // set the parents of all the block props
- foreach ($root->props as $prop) {
- if ($prop[0] == "block") {
- $prop[1]->parent = $parentBlock;
- }
- }
- // copy mixins into scope, set their parents
- // bring blocks from import into current block
- // TODO: need to mark the source parser these came from this file
- foreach ($root->children as $childName => $child) {
- if (isset($parentBlock->children[$childName])) {
- $parentBlock->children[$childName] = array_merge(
- $parentBlock->children[$childName],
- $child);
- } else {
- $parentBlock->children[$childName] = $child;
- }
- }
- $pi = pathinfo($realPath);
- $dir = $pi["dirname"];
- list($top, $bottom) = $this->sortProps($root->props, true);
- $this->compileImportedProps($top, $parentBlock, $out, $parser, $dir);
- return array(true, $bottom, $parser, $dir);
- }
- protected function compileImportedProps($props, $block, $out, $sourceParser, $importDir) {
- $oldSourceParser = $this->sourceParser;
- $oldImport = $this->importDir;
- // TODO: this is because the importDir api is stupid
- $this->importDir = (array)$this->importDir;
- array_unshift($this->importDir, $importDir);
- foreach ($props as $prop) {
- $this->compileProp($prop, $block, $out);
- }
- $this->importDir = $oldImport;
- $this->sourceParser = $oldSourceParser;
- }
- /**
- * Recursively compiles a block.
- *
- * A block is analogous to a CSS block in most cases. A single LESS document
- * is encapsulated in a block when parsed, but it does not have parent tags
- * so all of it's children appear on the root level when compiled.
- *
- * Blocks are made up of props and children.
- *
- * Props are property instructions, array tuples which describe an action
- * to be taken, eg. write a property, set a variable, mixin a block.
- *
- * The children of a block are just all the blocks that are defined within.
- * This is used to look up mixins when performing a mixin.
- *
- * Compiling the block involves pushing a fresh environment on the stack,
- * and iterating through the props, compiling each one.
- *
- * See GantryLessCompiler::compileProp()
- *
- */
- protected function compileBlock($block) {
- switch ($block->type) {
- case "root":
- $this->compileRoot($block);
- break;
- case null:
- $this->compileCSSBlock($block);
- break;
- case "media":
- $this->compileMedia($block);
- break;
- case "directive":
- $name = "@" . $block->name;
- if (!empty($block->value)) {
- $name .= " " . $this->compileValue($this->reduce($block->value));
- }
- $this->compileNestedBlock($block, array($name));
- break;
- default:
- $this->throwError("unknown block type: $block->type\n");
- }
- }
- protected function compileCSSBlock($block) {
- $env = $this->pushEnv();
- $selectors = $this->compileSelectors($block->tags);
- $env->selectors = $this->multiplySelectors($selectors);
- $out = $this->makeOutputBlock(null, $env->selectors);
- $this->scope->children[] = $out;
- $this->compileProps($block, $out);
- $block->scope = $env; // mixins carry scope with them!
- $this->popEnv();
- }
- protected function compileMedia($media) {
- $env = $this->pushEnv($media);
- $parentScope = $this->mediaParent($this->scope);
- $query = $this->compileMediaQuery($this->multiplyMedia($env));
- $this->scope = $this->makeOutputBlock($media->type, array($query));
- $parentScope->children[] = $this->scope;
- $this->compileProps($media, $this->scope);
- if (count($this->scope->lines) > 0) {
- $orphanSelelectors = $this->findClosestSelectors();
- if (!is_null($orphanSelelectors)) {
- $orphan = $this->makeOutputBlock(null, $orphanSelelectors);
- $orphan->lines = $this->scope->lines;
- array_unshift($this->scope->children, $orphan);
- $this->scope->lines = array();
- }
- }
- $this->scope = $this->scope->parent;
- $this->popEnv();
- }
- protected function mediaParent($scope) {
- while (!empty($scope->parent)) {
- if (!empty($scope->type) && $scope->type != "media") {
- break;
- }
- $scope = $scope->parent;
- }
- return $scope;
- }
- protected function compileNestedBlock($block, $selectors) {
- $this->pushEnv($block);
- $this->scope = $this->makeOutputBlock($block->type, $selectors);
- $this->scope->parent->children[] = $this->scope;
- $this->compileProps($block, $this->scope);
- $this->scope = $this->scope->parent;
- $this->popEnv();
- }
- protected function compileRoot($root) {
- $this->pushEnv();
- $this->scope = $this->makeOutputBlock($root->type);
- $this->compileProps($root, $this->scope);
- $this->popEnv();
- }
- protected function compileProps($block, $out) {
- foreach ($this->sortProps($block->props) as $prop) {
- $this->compileProp($prop, $block, $out);
- }
- }
- protected function sortProps($props, $split = false) {
- $vars = array();
- $imports = array();
- $other = array();
- foreach ($props as $prop) {
- switch ($prop[0]) {
- case "assign":
- if (isset($prop[1][0]) && $prop[1][0] == $this->vPrefix) {
- $vars[] = $prop;
- } else {
- $other[] = $prop;
- }
- break;
- case "import":
- $id = self::$nextImportId++;
- $prop[] = $id;
- $imports[] = $prop;
- $other[] = array("import_mixin", $id);
- break;
- default:
- $other[] = $prop;
- }
- }
- if ($split) {
- return array(array_merge($vars, $imports), $other);
- } else {
- return array_merge($vars, $imports, $other);
- }
- }
- protected function compileMediaQuery($queries) {
- $compiledQueries = array();
- foreach ($queries as $query) {
- $parts = array();
- foreach ($query as $q) {
- switch ($q[0]) {
- case "mediaType":
- $parts[] = implode(" ", array_slice($q, 1));
- break;
- case "mediaExp":
- if (isset($q[2])) {
- $parts[] = "($q[1]: " .
- $this->compileValue($this->reduce($q[2])) . ")";
- } else {
- $parts[] = "($q[1])";
- }
- break;
- case "variable":
- $parts[] = $this->compileValue($this->reduce($q));
- break;
- }
- }
- if (count($parts) > 0) {
- $compiledQueries[] = implode(" and ", $parts);
- }
- }
- $out = "@media";
- if (!empty($parts)) {
- $out .= " " .
- implode($this->formatter->selectorSeparator, $compiledQueries);
- }
- return $out;
- }
- protected function multiplyMedia($env, $childQueries = null) {
- if (is_null($env) ||
- !empty($env->block->type) && $env->block->type != "media")
- {
- return $childQueries;
- }
- // plain old block, skip
- if (empty($env->block->type)) {
- return $this->multiplyMedia($env->parent, $childQueries);
- }
- $out = array();
- $queries = $env->block->queries;
- if (is_null($childQueries)) {
- $out = $queries;
- } else {
- foreach ($queries as $parent) {
- foreach ($childQueries as $child) {
- $out[] = array_merge($parent, $child);
- }
- }
- }
- return $this->multiplyMedia($env->parent, $out);
- }
- protected function expandParentSelectors(&$tag, $replace) {
- $parts = explode("$&$", $tag);
- $count = 0;
- foreach ($parts as &$part) {
- $part = str_replace($this->parentSelector, $replace, $part, $c);
- $count += $c;
- }
- $tag = implode($this->parentSelector, $parts);
- return $count;
- }
- protected function findClosestSelectors() {
- $env = $this->env;
- $selectors = null;
- while ($env !== null) {
- if (isset($env->selectors)) {
- $selectors = $env->selectors;
- break;
- }
- $env = $env->parent;
- }
- return $selectors;
- }
- // multiply $selectors against the nearest selectors in env
- protected function multiplySelectors($selectors) {
- // find parent selectors
- $parentSelectors = $this->findClosestSelectors();
- if (is_null($parentSelectors)) {
- // kill parent reference in top level selector
- foreach ($selectors as &$s) {
- $this->expandParentSelectors($s, "");
- }
- return $selectors;
- }
- $out = array();
- foreach ($parentSelectors as $parent) {
- foreach ($selectors as $child) {
- $count = $this->expandParentSelectors($child, $parent);
- // don't prepend the parent tag if & was used
- if ($count > 0) {
- $out[] = trim($child);
- } else {
- $out[] = trim($parent . ' ' . $child);
- }
- }
- }
- return $out;
- }
- // reduces selector expressions
- protected function compileSelectors($selectors) {
- $out = array();
- foreach ($selectors as $s) {
- if (is_array($s)) {
- list(, $value) = $s;
- $out[] = trim($this->compileValue($this->reduce($value)));
- } else {
- $out[] = $s;
- }
- }
- return $out;
- }
- protected function eq($left, $right) {
- return $left == $right;
- }
- protected function patternMatch($block, $callingArgs) {
- // match the guards if it has them
- // any one of the groups must have all its guards pass for a match
- if (!empty($block->guards)) {
- $groupPassed = false;
- foreach ($block->guards as $guardGroup) {
- foreach ($guardGroup 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;
- $this->popEnv();
- if ($passed) {
- $groupPassed = true;
- } else {
- $groupPassed = false;
- break;
- }
- }
- if ($groupPassed) break;
- }
- if (!$groupPassed) {
- return false;
- }
- }
- $numCalling = count($callingArgs);
- if (empty($block->args)) {
- return $block->isVararg || $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->isVararg) {
- return true; // not having enough is handled above
- } else {
- $numMatched = $i + 1;
- // greater than becuase default values always match
- return $numMatched >= $numCalling;
- }
- }
- protected function patternMatchAll($blocks, $callingArgs) {
- $matches = null;
- foreach ($blocks as $block) {
- if ($this->patternMatch($block, $callingArgs)) {
- $matches[] = $block;
- }
- }
- return $matches;
- }
- // attempt to find blocks matched by path and args
- protected function findBlocks($searchIn, $path, $args, $seen=array()) {
- if ($searchIn == null) return null;
- if (isset($seen[$searchIn->id])) return null;
- $seen[$searchIn->id] = true;
- $name = $path[0];
- if (isset($searchIn->children[$name])) {
- $blocks = $searchIn->children[$name];
- if (count($path) == 1) {
- $matches = $this->patternMatchAll($blocks, $args);
- if (!empty($matches)) {
- // This will return all blocks that match in the closest
- // scope that has any matching block, like lessjs
- return $matches;
- }
- } else {
- $matches = array();
- foreach ($blocks as $subBlock) {
- $subMatches = $this->findBlocks($subBlock,
- array_slice($path, 1), $args, $seen);
- if (!is_null($subMatches)) {
- foreach ($subMatches as $sm) {
- $matches[] = $sm;
- }
- }
- }
- return count($matches) > 0 ? $matches : null;
- }
- }
- if ($searchIn->parent === $searchIn) return null;
- return $this->findBlocks($searchIn->parent, $path, $args, $seen);
- }
- // sets all argument names in $args to either the default value
- // or the one passed in through $values
- protected function zipSetArgs($args, $values) {
- $i = 0;
- $assignedValues = array();
- foreach ($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);
- $assignedValues[] = $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 = $assignedValues;
- }
- // compile a prop and update $lines or $blocks appropriately
- protected function compileProp($prop, $block, $out) {
- // set error position context
- $this->sourceLoc = isset($prop[-1]) ? $prop[-1] : -1;
- switch ($prop[0]) {
- case 'assign':
- list(, $name, $value) = $prop;
- if ($name[0] == $this->vPrefix) {
- $this->set($name, $value);
- } else {
- $out->lines[] = $this->formatter->property($name,
- $this->compileValue($this->reduce($value)));
- }
- break;
- case 'block':
- list(, $child) = $prop;
- $this->compileBlock($child);
- break;
- case 'mixin':
- list(, $path, $args, $suffix) = $prop;
- $args = @array_map(array($this, "reduce"), (array)$args);
- $mixins = $this->findBlocks($block, $path, $args);
- if ($mixins === null) {
- // fwrite(STDERR,"failed to find block: ".implode(" > ", $path)."\n");
- break; // throw error here??
- }
- foreach ($mixins as $mixin) {
- $haveScope = false;
- if (isset($mixin->parent->scope)) {
- $haveScope = true;
- $mixinParentEnv = $this->pushEnv();
- $mixinParentEnv->storeParent = $mixin->parent->scope;
- }
- $haveArgs = false;
- if (isset($mixin->args)) {
- $haveArgs = true;
- $this->pushEnv();
- $this->zipSetArgs($mixin->args, $args);
- }
- $oldParent = $mixin->parent;
- if ($mixin != $block) $mixin->parent = $block;
- foreach ($this->sortProps($mixin->props) as $subProp) {
- if ($suffix !== null &&
- $subProp[0] == "assign" &&
- is_string($subProp[1]) &&
- $subProp[1]{0} != $this->vPrefix)
- {
- $subProp[2] = array(
- 'list', ' ',
- array($subProp[2], array('keyword', $suffix))
- );
- }
- $this->compileProp($subProp, $mixin, $out);
- }
- $mixin->parent = $oldParent;
- if ($haveArgs) $this->popEnv();
- if ($haveScope) $this->popEnv();
- }
- break;
- case 'raw':
- $out->lines[] = $prop[1];
- break;
- case "directive":
- list(, $name, $value) = $prop;
- $out->lines[] = "@$name " . $this->compileValue($this->reduce($value)).';';
- break;
- case "comment":
- $out->lines[] = $prop[1];
- break;
- case "import";
- list(, $importPath, $importId) = $prop;
- $importPath = $this->reduce($importPath);
- if (!isset($this->env->imports)) {
- $this->env->imports = array();
- }
- $result = $this->tryImport($importPath, $block, $out);
- $this->env->imports[$importId] = $result === false ?
- array(false, "@import " . $this->compileValue($importPath).";") :
- $result;
- break;
- case "import_mixin":
- list(,$importId) = $prop;
- $import = $this->env->imports[$importId];
- if ($import[0] === false) {
- $out->lines[] = $import[1];
- } else {
- list(, $bottom, $parser, $importDir) = $import;
- $this->compileImportedProps($bottom, $block, $out, $parser, $importDir);
- }
- break;
- default:
- $this->throwError("unknown op: {$prop[0]}\n");
- }
- }
- /**
- * Compiles a primitive value into a CSS property value.
- *
- * Values in lessphp are typed by being wrapped in arrays, their format is
- * typically:
- *
- * array(type, contents [, additional_contents]*)
- *
- * The input is expected to be reduced. This function will not work on
- * things like expressions and variables.
- */
- protected function compileValue($value) {
- switch ($value[0]) {
- case 'list':
- // [1] - delimiter
- // [2] - array of values
- return implode($value[1], array_map(array($this, 'compileValue'), $value[2]));
- case 'raw_color':
- if (!empty($this->formatter->compressColors)) {
- return $this->compileValue($this->coerceColor($value));
- }
- return $value[1];
- case 'keyword':
- // [1] - the keyword
- return $value[1];
- case 'number':
- list(, $num, $unit) = $value;
- // [1] - the number
- // [2] - the unit
- if ($this->numberPrecision !== null) {
- $num = round($num, $this->numberPrecision);
- }
- return $num . $unit;
- case 'string':
- // [1] - contents of string (includes quotes)
- list(, $delim, $content) = $value;
- foreach ($content as &$part) {
- if (is_array($part)) {
- $part = $this->compileValue($part);
- }
- }
- return $delim . implode($content) . $delim;
- case 'color':
- // [1] - red component (either number or a %)
- // [2] - green component
- // [3] - blue component
- // [4] - optional alpha component
- list(, $r, $g, $b) = $value;
- $r = round($r);
- $g = round($g);
- $b = round($b);
- if (count($value) == 5 && $value[4] != 1) { // rgba
- return 'rgba('.$r.','.$g.','.$b.','.$value[4].')';
- }
- $h = sprintf("#%02x%02x%02x", $r, $g, $b);
- if (!empty($this->formatter->compressColors)) {
- // Converting hex color to short notation (e.g. #003399 to #039)
- if ($h[1] === $h[2] && $h[3] === $h[4] && $h[5] === $h[6]) {
- $h = '#' . $h[1] . $h[3] . $h[5];
- }
- }
- return $h;
- case 'function':
- list(, $name, $args) = $value;
- return $name.'('.$this->compileValue($args).')';
- default: // assumed to be unit
- $this->throwError("unknown value type: $value[0]");
- }
- }
- protected function lib_isnumber($value) {
- return $this->toBool($value[0] == "number");
- }
- protected function lib_isstring($value) {
- return $this->toBool($value[0] == "string");
- }
- protected function lib_iscolor($value) {
- return $this->toBool($this->coerceColor($value));
- }
- protected function lib_iskeyword($value) {
- return $this->toBool($value[0] == "keyword");
- }
- protected function lib_ispixel($value) {
- return $this->toBool($value[0] == "number" && $value[2] == "px");
- }
- protected function lib_ispercentage($value) {
- return $this->toBool($value[0] == "number" && $value[2] == "%");
- }
- protected function lib_isem($value) {
- return $this->toBool($value[0] == "number" && $value[2] == "em");
- }
- protected function lib_isrem($value) {
- return $this->toBool($value[0] == "number" && $value[2] == "rem");
- }
- protected function lib_rgbahex($color) {
- $color = $this->coerceColor($color);
- if (is_null($color))
- $this->throwError("color expected for rgbahex");
- return sprintf("#%02x%02x%02x%02x",
- isset($color[4]) ? $color[4]*255 : 255,
- $color[1],$color[2], $color[3]);
- }
- protected function lib_argb($color){
- return $this->lib_rgbahex($color);
- }
- // utility func to unquote a string
- protected function lib_e($arg) {
- switch ($arg[0]) {
- case "list":
- $items = $arg[2];
- if (isset($items[0])) {
- return $this->lib_e($items[0]);
- }
- return self::$defaultValue;
- case "string":
- $arg[1] = "";
- return $arg;
- case "keyword":
- return $arg;
- default:
- return array("keyword", $this->compileValue($arg));
- }
- }
- protected function lib__sprintf($args) {
- if ($args[0] != "list") return $args;
- $values = $args[2];
- $string = array_shift($values);
- $template = $this->compileValue($this->lib_e($string));
- $i = 0;
- if (preg_match_all('/%[dsa]/', $template, $m)) {
- foreach ($m[0] as $match) {
- $val = isset($values[$i]) ?
- $this->reduce($values[$i]) : array('keyword', '');
- // lessjs compat, renders fully expanded color, not raw color
- if ($color = $this->coerceColor($val)) {
- $val = $color;
- }
- $i++;
- $rep = $this->compileValue($this->lib_e($val));
- $template = preg_replace('/'.self::preg_quote($match).'/',
- $rep, $template, 1);
- }
- }
- $d = $string[0] == "string" ? $string[1] : '"';
- return array("string", $d, array($template));
- }
- protected function lib_floor($arg) {
- $value = $this->assertNumber($arg);
- return array("number", floor($value), $arg[2]);
- }
- protected function lib_ceil($arg) {
- $value = $this->assertNumber($arg);
- return array("number", ceil($value), $arg[2]);
- }
- protected function lib_round($arg) {
- $value = $this->assertNumber($arg);
- return array("number", round($value), $arg[2]);
- }
- protected function lib_unit($arg) {
- if ($arg[0] == "list") {
- list($number, $newUnit) = $arg[2];
- return array("number", $this->assertNumber($number),
- $this->compileValue($this->lib_e($newUnit)));
- } else {
- return array("number", $this->assertNumber($arg), "");
- }
- }
- /**
- * Helper function to get arguments for color manipulation functions.
- * takes a list that contains a color like thing and a percentage
- */
- protected function colorArgs($args) {
- if ($args[0] != 'list' || count($args[2]) < 2) {
- return array(array('color', 0, 0, 0), 0);
- }
- list($color, $delta) = $args[2];
- $color = $this->assertColor($color);
- $delta = floatval($delta[1]);
- return array($color, $delta);
- }
- protected function lib_darken($args) {
- list($color, $delta) = $this->colorArgs($args);
- $hsl = $this->toHSL($color);
- $hsl[3] = $this->clamp($hsl[3] - $delta, 100);
- return $this->toRGB($hsl);
- }
- protected function lib_lighten($args) {
- list($color, $delta) = $this->colorArgs($args);
- $hsl = $this->toHSL($color);
- $hsl[3] = $this->clamp($hsl[3] + $delta, 100);
- return $this->toRGB($hsl);
- }
- protected function lib_saturate($args) {
- list($color, $delta) = $this->colorArgs($args);
- $hsl = $this->toHSL($color);
- $hsl[2] = $this->clamp($hsl[2] + $delta, 100);
- return $this->toRGB($hsl);
- }
- protected function lib_desaturate($args) {
- list($color, $delta) = $this->colorArgs($args);
- $hsl = $this->toHSL($color);
- $hsl[2] = $this->clamp($hsl[2] - $delta, 100);
- return $this->toRGB($hsl);
- }
- protected function lib_spin($args) {
- list($color, $delta) = $this->colorArgs($args);
- $hsl = $this->toHSL($color);
- $hsl[1] = $hsl[1] + $delta % 360;
- if ($hsl[1] < 0) $hsl[1] += 360;
- return $this->toRGB($hsl);
- }
- protected function lib_fadeout($args) {
- list($color, $delta) = $this->colorArgs($args);
- $color[4] = $this->clamp((isset($color[4]) ? $color[4] : 1) - $delta/100);
- return $color;
- }
- protected function lib_fadein($args) {
- list($color, $delta) = $this->colorArgs($args);
- $color[4] = $this->clamp((isset($color[4]) ? $color[4] : 1) + $delta/100);
- return $color;
- }
- protected function lib_hue($color) {
- $hsl = $this->toHSL($this->assertColor($color));
- return round($hsl[1]);
- }
- protected function lib_saturation($color) {
- $hsl = $this->toHSL($this->assertColor($color));
- return round($hsl[2]);
- }
- protected function lib_lightness($color) {
- $hsl = $this->toHSL($this->assertColor($color));
- return round($hsl[3]);
- }
- // get the alpha of a color
- // defaults to 1 for non-colors or colors without an alpha
- protected function lib_alpha($value) {
- if (!is_null($color = $this->coerceColor($value))) {
- return isset($color[4]) ? $color[4] : 1;
- }
- }
- // set the alpha of the color
- protected function lib_fade($args) {
- list($color, $alpha) = $this->colorArgs($args);
- $color[4] = $this->clamp($alpha / 100.0);
- return $color;
- }
- protected function lib_percentage($arg) {
- $num = $this->assertNumber($arg);
- return array("number", $num*100, "%");
- }
- // mixes two colors by weight
- // mix(@color1, @color2, @weight);
- // http://sass-lang.com/docs/yardoc/Sass/Script/Functions.html#mix-instance_method
- protected function lib_mix($args) {
- if ($args[0] != "list" || count($args[2]) < 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);
- }
- protected function lib_contrast($args) {
- if ($args[0] != 'list' || count($args[2]) < 3) {
- return array(array('color', 0, 0, 0), 0);
- }
- list($inputColor, $darkColor, $lightColor) = $args[2];
- $inputColor = $this->assertColor($inputColor);
- $darkColor = $this->assertColor($darkColor);
- $lightColor = $this->assertColor($lightColor);
- $hsl = $this->toHSL($inputColor);
- if ($hsl[3] > 50) {
- return $darkColor;
- }
- return $lightColor;
- }
- protected function assertColor($value, $error = "expected color value") {
- $color = $this->coerceColor($value);
- if (is_null($color)) $this->throwError($error);
- return $color;
- }
- protected function assertNumber($value, $error = "expecting number") {
- if ($value[0] == "number") return $value[1];
- $this->throwError($error);
- }
- protected function toHSL($color) {
- if ($color[0] == 'hsl') return $color;
- $r = $color[1] / 255;
- $g = $color[2] / 255;
- $b = $color[3] / 255;
- $min = min($r, $g, $b);
- $max = max($r, $g, $b);
- $L = ($min + $max) / 2;
- if ($min == $max) {
- $S = $H = 0;
- } else {
- if ($L < 0.5)
- $S = ($max - $min)/($max + $min);
- else
- $S = ($max - $min)/(2.0 - $max - $min);
- if ($r == $max) $H = ($g - $b)/($max - $min);
- elseif ($g == $max) $H = 2.0 + ($b - $r)/($max - $min);
- elseif ($b == $max) $H = 4.0 + ($r - $g)/($max - $min);
- }
- $out = array('hsl',
- ($H < 0 ? $H + 6 : $H)*60,
- $S*100,
- $L*100,
- );
- if (count($color) > 4) $out[] = $color[4]; // copy alpha
- return $out;
- }
- protected function toRGB_helper($comp, $temp1, $temp2) {
- if ($comp < 0) $comp += 1.0;
- elseif ($comp > 1) $comp -= 1.0;
- if (6 * $comp < 1) return $temp1 + ($temp2 - $temp1) * 6 * $comp;
- if (2 * $comp < 1) return $temp2;
- if (3 * $comp < 2) return $temp1 + ($temp2 - $temp1)*((2/3) - $comp) * 6;
- return $temp1;
- }
- /**
- * Converts a hsl array into a color value in rgb.
- * Expects H to be in range of 0 to 360, S and L in 0 to 100
- */
- protected function toRGB($color) {
- if ($color[0] == 'color') return $color;
- $H = $color[1] / 360;
- $S = $color[2] / 100;
- $L = $color[3] / 100;
- if ($S == 0) {
- $r = $g = $b = $L;
- } else {
- $temp2 = $L < 0.5 ?
- $L*(1.0 + $S) :
- $L + $S - $L * $S;
- $temp1 = 2.0 * $L - $temp2;
- $r = $this->toRGB_helper($H + 1/3, $temp1, $temp2);
- $g = $this->toRGB_helper($H, $temp1, $temp2);
- $b = $this->toRGB_helper($H - 1/3, $temp1, $temp2);
- }
- // $out = array('color', round($r*255), round($g*255), round($b*255));
- $out = array('color', $r*255, $g*255, $b*255);
- if (count($color) > 4) $out[] = $color[4]; // copy alpha
- return $out;
- }
- protected function clamp($v, $max = 1, $min = 0) {
- return min($max, max($min, $v));
- }
- /**
- * Convert the rgb, rgba, hsl color literals of function type
- * as returned by the parser into values of color type.
- */
- protected function funcToColor($func) {
- $fname = $func[1];
- if ($func[2][0] != 'list') return false; // need a list of arguments
- $rawComponents = $func[2][2];
- if ($fname == 'hsl' || $fname == 'hsla') {
- $hsl = array('hsl');
- $i = 0;
- foreach ($rawComponents as $c) {
- $val = $this->reduce($c);
- $val = isset($val[1]) ? floatval($val[1]) : 0;
- if ($i == 0) $clamp = 360;
- elseif ($i < 3) $clamp = 100;
- else $clamp = 1;
- $hsl[] = $this->clamp($val, $clamp);
- $i++;
- }
- while (count($hsl) < 4) $hsl[] = 0;
- return $this->toRGB($hsl);
- } elseif ($fname == 'rgb' || $fname == 'rgba') {
- $components = array();
- $i = 1;
- foreach ($rawComponents as $c) {
- $c = $this->reduce($c);
- if ($i < 4) {
- if ($c[0] == "number" && $c[2] == "%") {
- $components[] = 255 * ($c[1] / 100);
- } else {
- $components[] = floatval($c[1]);
- }
- } elseif ($i == 4) {
- if ($c[0] == "number" && $c[2] == "%") {
- $components[] = 1.0 * ($c[1] / 100);
- } else {
- $components[] = floatval($c[1]);
- }
- } else break;
- $i++;
- }
- while (count($components) < 3) $components[] = 0;
- array_unshift($components, 'color');
- return $this->fixColor($components);
- }
- return false;
- }
- protected function reduce($value, $forExpression = false) {
- switch ($value[0]) {
- case "interpolate":
- $reduced = $this->reduce($value[1]);
- $var = $this->compileValue($reduced);
- $res = $this->reduce(array("variable", $this->vPrefix . $var));
- if (empty($value[2])) $res = $this->lib_e($res);
- return $res;
- case "variable":
- $key = $value[1];
- if (is_array($key)) {
- $key = $this->reduce($key);
- $key = $this->vPrefix . $this->compileValue($this->lib_e($key));
- }
- $seen =& $this->env->seenNames;
- if (!empty($seen[$key])) {
- $this->throwError("infinite loop detected: $key");
- }
- $seen[$key] = true;
- $out = $this->reduce($this->get($key, self::$defaultValue));
- $seen[$key] = false;
- return $out;
- case "list":
- foreach ($value[2] as &$item) {
- $item = $this->reduce($item, $forExpression);
- }
- return $value;
- case "expression":
- return $this->evaluate($value);
- case "string":
- foreach ($value[2] as &$part) {
- if (is_array($part)) {
- $strip = $part[0] == "variable";
- $part = $this->reduce($part);
- if ($strip) $part = $this->lib_e($part);
- }
- }
- return $value;
- case "escape":
- list(,$inner) = $value;
- return $this->lib_e($this->reduce($inner));
- case "function":
- $color = $this->funcToColor($value);
- if ($color) return $color;
- list(, $name, $args) = $value;
- if ($name == "%") $name = "_sprintf";
- $f = isset($this->libFunctions[$name]) ?
- $this->libFunctions[$name] : array($this, 'lib_'.$name);
- if (is_callable($f)) {
- if ($args[0] == 'list')
- $args = self::compressList($args[2], $args[1]);
- $ret = call_user_func($f, $this->reduce($args, true), $this);
- if (is_null($ret)) {
- return array("string", "", array(
- $name, "(", $args, ")"
- ));
- }
- // convert to a typed value if the result is a php primitive
- if (is_numeric($ret)) $ret = array('number', $ret, "");
- elseif (!is_array($ret)) $ret = array('keyword', $ret);
- return $ret;
- }
- // plain function, reduce args
- $value[2] = $this->reduce($value[2]);
- return $value;
- case "unary":
- list(, $op, $exp) = $value;
- $exp = $this->reduce($exp);
- if ($exp[0] == "number") {
- switch ($op) {
- case "+":
- return $exp;
- case "-":
- $exp[1] *= -1;
- return $exp;
- }
- }
- return array("string", "", array($op, $exp));
- }
- if ($forExpression) {
- switch ($value[0]) {
- case "keyword":
- if ($color = $this->coerceColor($value)) {
- return $color;
- }
- break;
- case "raw_color":
- return $this->coerceColor($value);
- }
- }
- return $value;
- }
- // coerce a value for use in color operation
- protected function coerceColor($value) {
- switch($value[0]) {
- case 'color': return $value;
- case 'raw_color':
- $c = array("color", 0, 0, 0);
- $colorStr = substr($value[1], 1);
- $num = hexdec($colorStr);
- $width = strlen($colorStr) == 3 ? 16 : 256;
- for ($i = 3; $i > 0; $i--) { // 3 2 1
- $t = $num % $width;
- $num /= $width;
- $c[$i] = $t * (256/$width) + $t * floor(16/$width);
- }
- return $c;
- case 'keyword':
- $name = $value[1];
- if (isset(self::$cssColors[$name])) {
- $rgba = explode(',', self::$cssColors[$name]);
- if(isset($rgba[3]))
- return array('color', $rgba[0], $rgba[1], $rgba[2], $rgba[3]);
- return array('color', $rgba[0], $rgba[1], $rgba[2]);
- }
- return null;
- }
- }
- // make something string like into a string
- protected function coerceString($value) {
- switch ($value[0]) {
- case "string":
- return $value;
- case "keyword":
- return array("string", "", array($value[1]));
- }
- return null;
- }
- // turn list of length 1 into value type
- protected function flattenList($value) {
- if ($value[0] == "list" && count($value[2]) == 1) {
- return $this->flattenList($value[2][0]);
- }
- return $value;
- }
- protected function toBool($a) {
- if ($a) return self::$TRUE;
- else return self::$FALSE;
- }
- // evaluate an expression
- protected function evaluate($exp) {
- list(, $op, $left, $right, $whiteBefore, $whiteAfter) = $exp;
- $left = $this->reduce($left, true);
- $right = $this->reduce($right, true);
- if ($leftColor = $this->coerceColor($left)) {
- $left = $leftColor;
- }
- if ($rightColor = $this->coerceColor($right)) {
- $right = $rightColor;
- }
- $ltype = $left[0];
- $rtype = $right[0];
- // operators that work on all types
- if ($op == "and") {
- return $this->toBool($left == self::$TRUE && $right == self::$TRUE);
- }
- if ($op == "=") {
- return $this->toBool($this->eq($left, $right) );
- }
- if ($op == "+" && !is_null($str = $this->stringConcatenate($left, $right))) {
- return $str;
- }
- // type based operators
- $fname = "op_${ltype}_${rtype}";
- if (is_callable(array($this, $fname))) {
- $out = $this->$fname($op, $left, $right);
- if (!is_null($out)) return $out;
- }
- // make the expression look it did before being parsed
- $paddedOp = $op;
- if ($whiteBefore) $paddedOp = " " . $paddedOp;
- if ($whiteAfter) $paddedOp .= " ";
- return array("string", "", array($left, $paddedOp, $right));
- }
- protected function stringConcatenate($left, $right) {
- if ($strLeft = $this->coerceString($left)) {
- if ($right[0] == "string") {
- $right[1] = "";
- }
- $strLeft[2][] = $right;
- return $strLeft;
- }
- if ($strRight = $this->coerceString($right)) {
- array_unshift($strRight[2], $left);
- return $strRight;
- }
- }
- // make sure a color's components don't go out of bounds
- protected function fixColor($c) {
- foreach (range(1, 3) as $i) {
- if ($c[$i] < 0) $c[$i] = 0;
- if ($c[$i] > 255) $c[$i] = 255;
- }
- return $c;
- }
- protected function op_number_color($op, $lft, $rgt) {
- if ($op == '+' || $op == '*') {
- return $this->op_color_number($op, $rgt, $lft);
- }
- }
- protected function op_color_number($op, $lft, $rgt) {
- if ($rgt[0] == '%') $rgt[1] /= 100;
- return $this->op_color_color($op, $lft,
- array_fill(1, count($lft) - 1, $rgt[1]));
- }
- protected function op_color_color($op, $left, $right) {
- $out = array('color');
- $max = count($left) > count($right) ? count($left) : count($right);
- foreach (range(1, $max - 1) as $i) {
- $lval = isset($left[$i]) ? $left[$i] : 0;
- $rval = isset($right[$i]) ? $right[$i] : 0;
- switch ($op) {
- case '+':
- $out[] = $lval + $rval;
- break;
- case '-':
- $out[] = $lval - $rval;
- break;
- case '*':
- $out[] = $lval * $rval;
- break;
- case '%':
- $out[] = $lval % $rval;
- break;
- case '/':
- if ($rval == 0) $this->throwError("evaluate error: can't divide by zero");
- $out[] = $lval / $rval;
- break;
- default:
- $this->throwError('evaluate error: color op number failed on op '.$op);
- }
- }
- return $this->fixColor($out);
- }
- function lib_red($color){
- $color = $this->coerceColor($color);
- if (is_null($color)) {
- $this->throwError('color expected for red()');
- }
- return $color[1];
- }
- function lib_green($color){
- $color = $this->coerceColor($color);
- if (is_null($color)) {
- $this->throwError('color expected for green()');
- }
- return $color[2];
- }
- function lib_blue($color){
- $color = $this->coerceColor($color);
- if (is_null($color)) {
- $this->throwError('color expected for blue()');
- }
- return $color[3];
- }
- // operator on two numbers
- protected function op_number_number($op, $left, $right) {
- $unit = empty($left[2]) ? $right[2] : $left[2];
- $value = 0;
- switch ($op) {
- case '+':
- $value = $left[1] + $right[1];
- break;
- case '*':
- $value = $left[1] * $right[1];
- break;
- case '-':
- $value = $left[1] - $right[1];
- break;
- case '%':
- $value = $left[1] % $right[1];
- break;
- case '/':
- if ($right[1] == 0) $this->throwError('parse error: divide by zero');
- $value = $left[1] / $right[1];
- break;
- case '<':
- return $this->toBool($left[1] < $right[1]);
- case '>':
- return $this->toBool($left[1] > $right[1]);
- case '>=':
- return $this->toBool($left[1] >= $right[1]);
- case '=<':
- return $this->toBool($left[1] <= $right[1]);
- default:
- $this->throwError('parse error: unknown number operator: '.$op);
- }
- return array("number", $value, $unit);
- }
- /* environment functions */
- protected function makeOutputBlock($type, $selectors = null) {
- $b = new stdclass;
- $b->lines = array();
- $b->children = array();
- $b->selectors = $selectors;
- $b->type = $type;
- $b->parent = $this->scope;
- return $b;
- }
- // the state of execution
- protected function pushEnv($block = null) {
- $e = new stdclass;
- $e->parent = $this->env;
- $e->store = array();
- $e->block = $block;
- $this->env = $e;
- return $e;
- }
- // pop something off the stack
- protected function popEnv() {
- $old = $this->env;
- $this->env = $this->env->parent;
- return $old;
- }
- // set something in the current env
- protected function set($name, $value) {
- $this->env->store[$name] = $value;
- }
- // get the highest occurrence entry for a name
- protected function get($name, $default=null) {
- $current = $this->env;
- $isArguments = $name == $this->vPrefix . 'arguments';
- while ($current) {
- if ($isArguments && isset($current->arguments)) {
- return array('list', ' ', $current->arguments);
- }
- if (isset($current->store[$name]))
- return $current->store[$name];
- else {
- $current = isset($current->storeParent) ?
- $current->storeParent : $current->parent;
- }
- }
- return $default;
- }
- // inject array of unparsed strings into environment as variables
- protected function injectVariables($args) {
- $this->pushEnv();
- $parser = new GantryLessCompiler_Parser($this, __METHOD__);
- foreach ($args as $name => $strValue) {
- if ($name{0} != '@') $name = '@'.$name;
- $parser->count = 0;
- $parser->buffer = (string)$strValue;
- if (!$parser->propertyValue($value)) {
- throw new Exception("failed to parse passed in variable $name: $strValue");
- }
- $this->set($name, $value);
- }
- }
- /**
- * Initialize any static state, can initialize parser for a file
- * $opts isn't used yet
- */
- public function __construct($fname = null) {
- if ($fname !== null) {
- // used for deprecated parse method
- $this->_parseFile = $fname;
- }
- }
- public function compile($string, $name = null) {
- $locale = setlocale(LC_NUMERIC, 0);
- setlocale(LC_NUMERIC, "C");
- $this->parser = $this->makeParser($name);
- $root = $this->parser->parse($string);
- $this->env = null;
- $this->scope = null;
- $this->formatter = $this->newFormatter();
- if (!empty($this->registeredVars)) {
- $this->injectVariables($this->registeredVars);
- }
- $this->sourceParser = $this->parser; // used for error messages
- $this->compileBlock($root);
- ob_start();
- $this->formatter->block($this->scope);
- $out = ob_get_clean();
- setlocale(LC_NUMERIC, $locale);
- return $out;
- }
- public function compileFile($fname, $outFname = null) {
- if (!is_readable($fname)) {
- throw new Exception('load error: failed to find '.$fname);
- }
- $pi = pathinfo($fname);
- $oldImport = $this->importDir;
- $this->importDir = (array)$this->importDir;
- $this->importDir[] = $pi['dirname'].'/';
- $this->allParsedFiles = array();
- $this->addParsedFile($fname);
- $contents = file_get_contents($fname);
- // get a -custom file for the main less file
- $custom_file = pathinfo($fname,PATHINFO_FILENAME).'-custom.'.pathinfo($fname,PATHINFO_EXTENSION);
- if ($custom_realpath = $this->findImport($custom_file))
- {
- $contents .= file_get_contents($custom_realpath);
- $this->addParsedFile($custom_realpath);
- }
- $out = $this->compile($contents, $fname);
- $this->importDir = $oldImport;
- if ($outFname !== null) {
- return file_put_contents($outFname, $out);
- }
- return $out;
- }
- // compile only if changed input has changed or output doesn't exist
- public function checkedCompile($in, $out) {
- if (!is_file($out) || filemtime($in) > filemtime($out)) {
- $this->compileFile($in, $out);
- return true;
- }
- return false;
- }
- /**
- * Execute lessphp on a .less file or a lessphp cache structure
- *
- * The lessphp cache structure contains information about a specific
- * less file having been parsed. It can be used as a hint for future
- * calls to determine whether or not a rebuild is required.
- *
- * The cache structure contains two important keys that may be used
- * externally:
- *
- * compiled: The final compiled CSS
- * updated: The time (in seconds) the CSS was last compiled
- *
- * The cache structure is a plain-ol' PHP associative array and can
- * be serialized and unserialized without a hitch.
- *
- * @param mixed $in Input
- * @param bool $force Force rebuild?
- * @return array lessphp cache structure
- */
- public function cachedCompile($in, $force = false) {
- // assume no root
- $root = null;
- if (is_string($in)) {
- $root = $in;
- } elseif (is_array($in) and isset($in['root'])) {
- if ($force or ! isset($in['files'])) {
- // If we are forcing a recompile or if for some reason the
- // structure does not contain any file information we should
- // specify the root to trigger a rebuild.
- $root = $in['root'];
- } elseif (isset($in['files']) and is_array($in['files'])) {
- foreach ($in['files'] as $fname => $ftime ) {
- if (!file_exists($fname) or filemtime($fname) > $ftime) {
- // One of the files we knew about previously has changed
- // so we should look at our incoming root again.
- $root = $in['root'];
- break;
- }
- }
- }
- } else {
- // TODO: Throw an exception? We got neither a string nor something
- // that looks like a compatible lessphp cache structure.
- return null;
- }
- if ($root !== null) {
- // If we have a root value which means we should rebuild.
- $out = array();
- $out['root'] = $root;
- $out['compiled'] = $this->compileFile($root);
- $out['files'] = $this->allParsedFiles();
- $out['updated'] = time();
- return $out;
- } else {
- // No changes, pass back the structure
- // we were given initially.
- return $in;
- }
- }
- // parse and compile buffer
- // This is deprecated
- public function parse($str = null, $initialVariables = null) {
- if (is_array($str)) {
- $initialVariables = $str;
- $str = null;
- }
- $oldVars = $this->registeredVars;
- if ($initialVariables !== null) {
- $this->setVariables($initialVariables);
- }
- if ($str == null) {
- if (empty($this->_parseFile)) {
- throw new exception("nothing to parse");
- }
- $out = $this->compileFile($this->_parseFile);
- } else {
- $out = $this->compile($str);
- }
- $this->registeredVars = $oldVars;
- return $out;
- }
- protected function makeParser($name) {
- $parser = new GantryLessCompiler_Parser($this, $name);
- $parser->writeComments = $this->preserveComments;
- return $parser;
- }
- public function setFormatter($name) {
- $this->formatterName = $name;
- }
- protected function newFormatter() {
- $className = "GantryLessCompiler_Formatter_Lessjs";
- if (!empty($this->formatterName)) {
- if (!is_string($this->formatterName))
- return $this->formatterName;
- $className = "GantryLessCompiler_Formatter_$this->formatterName";
- }
- return new $className;
- }
- public function setPreserveComments($preserve) {
- $this->preserveComments = $preserve;
- }
- public function registerFunction($name, $func) {
- $this->libFunctions[$name] = $func;
- }
- public function unregisterFunction($name) {
- unset($this->libFunctions[$name]);
- }
- public function setVariables($variables) {
- $this->registeredVars = array_merge($this->registeredVars, $variables);
- }
- public function unsetVariable($name) {
- unset($this->registeredVars[$name]);
- }
- public function setImportDir($dirs) {
- $this->importDir = (array)$dirs;
- }
- public function addImportDir($dir) {
- $this->importDir = (array)$this->importDir;
- $this->importDir[] = $dir;
- }
- public function allParsedFiles() {
- return $this->allParsedFiles;
- }
- protected function addParsedFile($file) {
- $this->allParsedFiles[realpath($file)] = filemtime($file);
- }
- /**
- * Uses the current value of $this->count to show line and line number
- */
- protected function throwError($msg = null) {
- if ($this->sourceLoc >= 0) {
- $this->sourceParser->throwError($msg, $this->sourceLoc);
- }
- throw new exception($msg);
- }
- // compile file $in to file $out if $in is newer than $out
- // returns true when it compiles, false otherwise
- public static function ccompile($in, $out, $less = null) {
- if ($less === null) {
- $less = new self;
- }
- return $less->checkedCompile($in, $out);
- }
- public static function cexecute($in, $force = false, $less = null) {
- if ($less === null) {
- $less = new self;
- }
- return $less->cachedCompile($in, $force);
- }
- static protected $cssColors = array(
- 'aliceblue' => '240,248,255',
- 'antiquewhite' => '250,235,215',
- 'aqua' => '0,255,255',
- 'aquamarine' => '127,255,212',
- 'azure' => '240,255,255',
- 'beige' => '245,245,220',
- 'bisque' => '255,228,196',
- 'black' => '0,0,0',
- 'blanchedalmond' => '255,235,205',
- 'blue' => '0,0,255',
- 'blueviolet' => '138,43,226',
- 'brown' => '165,42,42',
- 'burlywood' => '222,184,135',
- 'cadetblue' => '95,158,160',
- 'chartreuse' => '127,255,0',
- 'chocolate' => '210,105,30',
- 'coral' => '255,127,80',
- 'cornflowerblue' => '100,149,237',
- 'cornsilk' => '255,248,220',
- 'crimson' => '220,20,60',
- 'cyan' => '0,255,255',
- 'darkblue' => '0,0,139',
- 'darkcyan' => '0,139,139',
- 'darkgoldenrod' => '184,134,11',
- 'darkgray' => '169,169,169',
- 'darkgreen' => '0,100,0',
- 'darkgrey' => '169,169,169',
- 'darkkhaki' => '189,183,107',
- 'darkmagenta' => '139,0,139',
- 'darkolivegreen' => '85,107,47',
- 'darkorange' => '255,140,0',
- 'darkorchid' => '153,50,204',
- 'darkred' => '139,0,0',
- 'darksalmon' => '233,150,122',
- 'darkseagreen' => '143,188,143',
- 'darkslateblue' => '72,61,139',
- 'darkslategray' => '47,79,79',
- 'darkslategrey' => '47…
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