+++ /dev/null
-<?php
-// @codingStandardsIgnoreFile File external to MediaWiki. Ignore coding conventions checks.
-/**
- * lessphp v0.4.0@2cc77e3c7b
- * http://leafo.net/lessphp
- *
- * LESS CSS compiler, adapted from http://lesscss.org
- *
- * For ease of distribution, lessphp 0.4.0 is under a dual license.
- * You are free to pick which one suits your needs.
- *
- * MIT LICENSE
- *
- * Copyright 2013, Leaf Corcoran <leafot@gmail.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * GPL VERSION 3
- *
- * Please refer to http://www.gnu.org/licenses/gpl-3.0.html for the full
- * text of the GPL version 3
- */
-
-
-/**
- * The LESS compiler and parser.
- *
- * Converting LESS to CSS is a three stage process. The incoming file is parsed
- * by `lessc_parser` into a syntax tree, then it is compiled into another tree
- * representing the CSS structure by `lessc`. The CSS tree is fed into a
- * formatter, like `lessc_formatter` which then outputs CSS as a string.
- *
- * During the first compile, all values are *reduced*, which means that their
- * types are brought to the lowest form before being dump as strings. This
- * handles math equations, variable dereferences, and the like.
- *
- * The `parse` function of `lessc` is the entry point.
- *
- * In summary:
- *
- * The `lessc` class creates an instance of the parser, feeds it LESS code,
- * then transforms the resulting tree to a CSS tree. This class also holds the
- * evaluation context, such as all available mixins and variables at any given
- * time.
- *
- * The `lessc_parser` class is only concerned with parsing its input.
- *
- * The `lessc_formatter` takes a CSS tree, and dumps it to a formatted string,
- * handling things like indentation.
- */
-class lessc {
- static public $VERSION = "v0.4.0";
-
- static public $TRUE = array("keyword", "true");
- static public $FALSE = array("keyword", "false");
-
- protected $libFunctions = array();
- protected $registeredVars = array();
- protected $preserveComments = false;
-
- public $vPrefix = '@'; // prefix of abstract properties
- public $mPrefix = '$'; // prefix of abstract blocks
- public $parentSelector = '&';
-
- public $importDisabled = false;
- public $importDir = '';
-
- protected $numberPrecision = null;
-
- protected $allParsedFiles = array();
-
- // set to the parser that generated the current line when compiling
- // so we know how to create error messages
- protected $sourceParser = null;
- protected $sourceLoc = null;
-
- static protected $nextImportId = 0; // uniquely identify imports
-
- // attempts to find the path of an import url, returns null for css files
- protected function findImport($url) {
- foreach ((array)$this->importDir as $dir) {
- $full = $dir.(substr($dir, -1) != '/' ? '/' : '').$url;
- if ($this->fileExists($file = $full.'.less') || $this->fileExists($file = $full)) {
- return $file;
- }
- }
-
- return null;
- }
-
- protected function fileExists($name) {
- return is_file($name);
- }
-
- static public function compressList($items, $delim) {
- if (!isset($items[1]) && isset($items[0])) return $items[0];
- else return array('list', $delim, $items);
- }
-
- static public function preg_quote($what) {
- return preg_quote($what, '/');
- }
-
- protected function tryImport($importPath, $parentBlock, $out) {
- if ($importPath[0] == "function" && $importPath[1] == "url") {
- $importPath = $this->flattenList($importPath[2]);
- }
-
- $str = $this->coerceString($importPath);
- if ($str === null) return false;
-
- $url = $this->compileValue($this->lib_e($str));
-
- // don't import if it ends in css
- if (substr_compare($url, '.css', -4, 4) === 0) return false;
-
- $realPath = $this->findImport($url);
-
- if ($realPath === null) return false;
-
- if ($this->importDisabled) {
- return array(false, "/* import disabled */");
- }
-
- if (isset($this->allParsedFiles[realpath($realPath)])) {
- return array(false, null);
- }
-
- $this->addParsedFile($realPath);
- $parser = $this->makeParser($realPath);
- $root = $parser->parse(file_get_contents($realPath));
-
- // set the parents of all the block props
- foreach ($root->props as $prop) {
- if ($prop[0] == "block") {
- $prop[1]->parent = $parentBlock;
- }
- }
-
- // copy mixins into scope, set their parents
- // bring blocks from import into current block
- // TODO: need to mark the source parser these came from this file
- foreach ($root->children as $childName => $child) {
- if (isset($parentBlock->children[$childName])) {
- $parentBlock->children[$childName] = array_merge(
- $parentBlock->children[$childName],
- $child);
- } else {
- $parentBlock->children[$childName] = $child;
- }
- }
-
- $pi = pathinfo($realPath);
- $dir = $pi["dirname"];
-
- list($top, $bottom) = $this->sortProps($root->props, true);
- $this->compileImportedProps($top, $parentBlock, $out, $parser, $dir);
-
- return array(true, $bottom, $parser, $dir);
- }
-
- protected function compileImportedProps($props, $block, $out, $sourceParser, $importDir) {
- $oldSourceParser = $this->sourceParser;
-
- $oldImport = $this->importDir;
-
- // TODO: this is because the importDir api is stupid
- $this->importDir = (array)$this->importDir;
- array_unshift($this->importDir, $importDir);
-
- foreach ($props as $prop) {
- $this->compileProp($prop, $block, $out);
- }
-
- $this->importDir = $oldImport;
- $this->sourceParser = $oldSourceParser;
- }
-
- /**
- * Recursively compiles a block.
- *
- * A block is analogous to a CSS block in most cases. A single LESS document
- * is encapsulated in a block when parsed, but it does not have parent tags
- * so all of it's children appear on the root level when compiled.
- *
- * Blocks are made up of props and children.
- *
- * Props are property instructions, array tuples which describe an action
- * to be taken, eg. write a property, set a variable, mixin a block.
- *
- * The children of a block are just all the blocks that are defined within.
- * This is used to look up mixins when performing a mixin.
- *
- * Compiling the block involves pushing a fresh environment on the stack,
- * and iterating through the props, compiling each one.
- *
- * See lessc::compileProp()
- *
- */
- protected function compileBlock($block) {
- switch ($block->type) {
- case "root":
- $this->compileRoot($block);
- break;
- case null:
- $this->compileCSSBlock($block);
- break;
- case "media":
- $this->compileMedia($block);
- break;
- case "directive":
- $name = "@" . $block->name;
- if (!empty($block->value)) {
- $name .= " " . $this->compileValue($this->reduce($block->value));
- }
-
- $this->compileNestedBlock($block, array($name));
- break;
- default:
- $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);
- }
- $out->lines = $this->deduplicate($out->lines);
- }
-
- /**
- * Deduplicate lines in a block. Comments are not deduplicated. If a
- * duplicate rule is detected, the comments immediately preceding each
- * occurence are consolidated.
- */
- protected function deduplicate($lines) {
- $unique = array();
- $comments = array();
-
- foreach($lines as $line) {
- if (strpos($line, '/*') === 0) {
- $comments[] = $line;
- continue;
- }
- if (!in_array($line, $unique)) {
- $unique[] = $line;
- }
- array_splice($unique, array_search($line, $unique), 0, $comments);
- $comments = array();
- }
- return array_merge($unique, $comments);
- }
-
- protected function sortProps($props, $split = false) {
- $vars = array();
- $imports = array();
- $other = array();
- $stack = array();
-
- foreach ($props as $prop) {
- switch ($prop[0]) {
- case "comment":
- $stack[] = $prop;
- break;
- case "assign":
- $stack[] = $prop;
- if (isset($prop[1][0]) && $prop[1][0] == $this->vPrefix) {
- $vars = array_merge($vars, $stack);
- } else {
- $other = array_merge($other, $stack);
- }
- $stack = array();
- break;
- case "import":
- $id = self::$nextImportId++;
- $prop[] = $id;
- $stack[] = $prop;
- $imports = array_merge($imports, $stack);
- $other[] = array("import_mixin", $id);
- $stack = array();
- break;
- default:
- $stack[] = $prop;
- $other = array_merge($other, $stack);
- $stack = array();
- break;
- }
- }
- $other = array_merge($other, $stack);
-
- if ($split) {
- return array(array_merge($vars, $imports), $other);
- } else {
- return array_merge($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, $orderedArgs, $keywordArgs) {
- // match the guards if it has them
- // any one of the groups must have all its guards pass for a match
- if (!empty($block->guards)) {
- $groupPassed = false;
- foreach ($block->guards as $guardGroup) {
- foreach ($guardGroup as $guard) {
- $this->pushEnv();
- $this->zipSetArgs($block->args, $orderedArgs, $keywordArgs);
-
- $negate = false;
- if ($guard[0] == "negate") {
- $guard = $guard[1];
- $negate = true;
- }
-
- $passed = $this->reduce($guard) == self::$TRUE;
- if ($negate) $passed = !$passed;
-
- $this->popEnv();
-
- if ($passed) {
- $groupPassed = true;
- } else {
- $groupPassed = false;
- break;
- }
- }
-
- if ($groupPassed) break;
- }
-
- if (!$groupPassed) {
- return false;
- }
- }
-
- if (empty($block->args)) {
- return $block->isVararg || empty($orderedArgs) && empty($keywordArgs);
- }
-
- $remainingArgs = $block->args;
- if ($keywordArgs) {
- $remainingArgs = array();
- foreach ($block->args as $arg) {
- if ($arg[0] == "arg" && isset($keywordArgs[$arg[1]])) {
- continue;
- }
-
- $remainingArgs[] = $arg;
- }
- }
-
- $i = -1; // no args
- // try to match by arity or by argument literal
- foreach ($remainingArgs as $i => $arg) {
- switch ($arg[0]) {
- case "lit":
- if (empty($orderedArgs[$i]) || !$this->eq($arg[1], $orderedArgs[$i])) {
- return false;
- }
- break;
- case "arg":
- // no arg and no default value
- if (!isset($orderedArgs[$i]) && !isset($arg[2])) {
- return false;
- }
- break;
- case "rest":
- $i--; // rest can be empty
- break 2;
- }
- }
-
- if ($block->isVararg) {
- return true; // not having enough is handled above
- } else {
- $numMatched = $i + 1;
- // greater than becuase default values always match
- return $numMatched >= count($orderedArgs);
- }
- }
-
- protected function patternMatchAll($blocks, $orderedArgs, $keywordArgs, $skip=array()) {
- $matches = null;
- foreach ($blocks as $block) {
- // skip seen blocks that don't have arguments
- if (isset($skip[$block->id]) && !isset($block->args)) {
- continue;
- }
-
- if ($this->patternMatch($block, $orderedArgs, $keywordArgs)) {
- $matches[] = $block;
- }
- }
-
- return $matches;
- }
-
- // attempt to find blocks matched by path and args
- protected function findBlocks($searchIn, $path, $orderedArgs, $keywordArgs, $seen=array()) {
- if ($searchIn == null) return null;
- if (isset($seen[$searchIn->id])) return null;
- $seen[$searchIn->id] = true;
-
- $name = $path[0];
-
- if (isset($searchIn->children[$name])) {
- $blocks = $searchIn->children[$name];
- if (count($path) == 1) {
- $matches = $this->patternMatchAll($blocks, $orderedArgs, $keywordArgs, $seen);
- if (!empty($matches)) {
- // This will return all blocks that match in the closest
- // scope that has any matching block, like lessjs
- return $matches;
- }
- } else {
- $matches = array();
- foreach ($blocks as $subBlock) {
- $subMatches = $this->findBlocks($subBlock,
- array_slice($path, 1), $orderedArgs, $keywordArgs, $seen);
-
- if (!is_null($subMatches)) {
- foreach ($subMatches as $sm) {
- $matches[] = $sm;
- }
- }
- }
-
- return count($matches) > 0 ? $matches : null;
- }
- }
- if ($searchIn->parent === $searchIn) return null;
- return $this->findBlocks($searchIn->parent, $path, $orderedArgs, $keywordArgs, $seen);
- }
-
- // sets all argument names in $args to either the default value
- // or the one passed in through $values
- protected function zipSetArgs($args, $orderedValues, $keywordValues) {
- $assignedValues = array();
-
- $i = 0;
- foreach ($args as $a) {
- if ($a[0] == "arg") {
- if (isset($keywordValues[$a[1]])) {
- // has keyword arg
- $value = $keywordValues[$a[1]];
- } elseif (isset($orderedValues[$i])) {
- // has ordered arg
- $value = $orderedValues[$i];
- $i++;
- } elseif (isset($a[2])) {
- // has default value
- $value = $a[2];
- } else {
- $this->throwError("Failed to assign arg " . $a[1]);
- $value = null; // :(
- }
-
- $value = $this->reduce($value);
- $this->set($a[1], $value);
- $assignedValues[] = $value;
- } else {
- // a lit
- $i++;
- }
- }
-
- // check for a rest
- $last = end($args);
- if ($last[0] == "rest") {
- $rest = array_slice($orderedValues, count($args) - 1);
- $this->set($last[1], $this->reduce(array("list", " ", $rest)));
- }
-
- // wow is this the only true use of PHP's + operator for arrays?
- $this->env->arguments = $assignedValues + $orderedValues;
- }
-
- // compile a prop and update $lines or $blocks appropriately
- protected function compileProp($prop, $block, $out) {
- // set error position context
- $this->sourceLoc = isset($prop[-1]) ? $prop[-1] : -1;
-
- switch ($prop[0]) {
- case 'assign':
- list(, $name, $value) = $prop;
- if ($name[0] == $this->vPrefix) {
- $this->set($name, $value);
- } else {
- $out->lines[] = $this->formatter->property($name,
- $this->compileValue($this->reduce($value)));
- }
- break;
- case 'block':
- list(, $child) = $prop;
- $this->compileBlock($child);
- break;
- case 'mixin':
- list(, $path, $args, $suffix) = $prop;
-
- $orderedArgs = array();
- $keywordArgs = array();
- foreach ((array)$args as $arg) {
- $argval = null;
- switch ($arg[0]) {
- case "arg":
- if (!isset($arg[2])) {
- $orderedArgs[] = $this->reduce(array("variable", $arg[1]));
- } else {
- $keywordArgs[$arg[1]] = $this->reduce($arg[2]);
- }
- break;
-
- case "lit":
- $orderedArgs[] = $this->reduce($arg[1]);
- break;
- default:
- $this->throwError("Unknown arg type: " . $arg[0]);
- }
- }
-
- $mixins = $this->findBlocks($block, $path, $orderedArgs, $keywordArgs);
-
- if ($mixins === null) {
- $this->throwError("{$prop[1][0]} is undefined");
- }
-
- foreach ($mixins as $mixin) {
- if ($mixin === $block && !$orderedArgs) {
- continue;
- }
-
- $haveScope = false;
- if (isset($mixin->parent->scope)) {
- $haveScope = true;
- $mixinParentEnv = $this->pushEnv();
- $mixinParentEnv->storeParent = $mixin->parent->scope;
- }
-
- $haveArgs = false;
- if (isset($mixin->args)) {
- $haveArgs = true;
- $this->pushEnv();
- $this->zipSetArgs($mixin->args, $orderedArgs, $keywordArgs);
- }
-
- $oldParent = $mixin->parent;
- if ($mixin != $block) $mixin->parent = $block;
-
- foreach ($this->sortProps($mixin->props) as $subProp) {
- if ($suffix !== null &&
- $subProp[0] == "assign" &&
- is_string($subProp[1]) &&
- $subProp[1]{0} != $this->vPrefix)
- {
- $subProp[2] = array(
- 'list', ' ',
- array($subProp[2], array('keyword', $suffix))
- );
- }
-
- $this->compileProp($subProp, $mixin, $out);
- }
-
- $mixin->parent = $oldParent;
-
- if ($haveArgs) $this->popEnv();
- if ($haveScope) $this->popEnv();
- }
-
- break;
- case 'raw':
- $out->lines[] = $prop[1];
- break;
- case "directive":
- list(, $name, $value) = $prop;
- $out->lines[] = "@$name " . $this->compileValue($this->reduce($value)).';';
- break;
- case "comment":
- $out->lines[] = $prop[1];
- break;
- case "import";
- list(, $importPath, $importId) = $prop;
- $importPath = $this->reduce($importPath);
-
- if (!isset($this->env->imports)) {
- $this->env->imports = array();
- }
-
- $result = $this->tryImport($importPath, $block, $out);
-
- $this->env->imports[$importId] = $result === false ?
- array(false, "@import " . $this->compileValue($importPath).";") :
- $result;
-
- break;
- case "import_mixin":
- list(,$importId) = $prop;
- $import = $this->env->imports[$importId];
- if ($import[0] === false) {
- if (isset($import[1])) {
- $out->lines[] = $import[1];
- }
- } else {
- list(, $bottom, $parser, $importDir) = $import;
- $this->compileImportedProps($bottom, $block, $out, $parser, $importDir);
- }
-
- break;
- default:
- $this->throwError("unknown op: {$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.
- */
- public function compileValue($value) {
- switch ($value[0]) {
- case 'list':
- // [1] - delimiter
- // [2] - array of values
- return implode($value[1], array_map(array($this, 'compileValue'), $value[2]));
- case 'raw_color':
- if (!empty($this->formatter->compressColors)) {
- return $this->compileValue($this->coerceColor($value));
- }
- return $value[1];
- case 'keyword':
- // [1] - the keyword
- return $value[1];
- case 'number':
- list(, $num, $unit) = $value;
- // [1] - the number
- // [2] - the unit
- if ($this->numberPrecision !== null) {
- $num = round($num, $this->numberPrecision);
- }
- return $num . $unit;
- case 'string':
- // [1] - contents of string (includes quotes)
- list(, $delim, $content) = $value;
- foreach ($content as &$part) {
- if (is_array($part)) {
- $part = $this->compileValue($part);
- }
- }
- return $delim . implode($content) . $delim;
- case 'color':
- // [1] - red component (either number or a %)
- // [2] - green component
- // [3] - blue component
- // [4] - optional alpha component
- list(, $r, $g, $b) = $value;
- $r = round($r);
- $g = round($g);
- $b = round($b);
-
- if (count($value) == 5 && $value[4] != 1) { // rgba
- return 'rgba('.$r.','.$g.','.$b.','.$value[4].')';
- }
-
- $h = sprintf("#%02x%02x%02x", $r, $g, $b);
-
- if (!empty($this->formatter->compressColors)) {
- // Converting hex color to short notation (e.g. #003399 to #039)
- if ($h[1] === $h[2] && $h[3] === $h[4] && $h[5] === $h[6]) {
- $h = '#' . $h[1] . $h[3] . $h[5];
- }
- }
-
- return $h;
-
- case 'function':
- list(, $name, $args) = $value;
- return $name.'('.$this->compileValue($args).')';
- default: // assumed to be unit
- $this->throwError("unknown value type: $value[0]");
- }
- }
-
- protected function lib_pow($args) {
- list($base, $exp) = $this->assertArgs($args, 2, "pow");
- return pow($this->assertNumber($base), $this->assertNumber($exp));
- }
-
- protected function lib_pi() {
- return pi();
- }
-
- protected function lib_mod($args) {
- list($a, $b) = $this->assertArgs($args, 2, "mod");
- return $this->assertNumber($a) % $this->assertNumber($b);
- }
-
- protected function lib_tan($num) {
- return tan($this->assertNumber($num));
- }
-
- protected function lib_sin($num) {
- return sin($this->assertNumber($num));
- }
-
- protected function lib_cos($num) {
- return cos($this->assertNumber($num));
- }
-
- protected function lib_atan($num) {
- $num = atan($this->assertNumber($num));
- return array("number", $num, "rad");
- }
-
- protected function lib_asin($num) {
- $num = asin($this->assertNumber($num));
- return array("number", $num, "rad");
- }
-
- protected function lib_acos($num) {
- $num = acos($this->assertNumber($num));
- return array("number", $num, "rad");
- }
-
- protected function lib_sqrt($num) {
- return sqrt($this->assertNumber($num));
- }
-
- protected function lib_extract($value) {
- list($list, $idx) = $this->assertArgs($value, 2, "extract");
- $idx = $this->assertNumber($idx);
- // 1 indexed
- if ($list[0] == "list" && isset($list[2][$idx - 1])) {
- return $list[2][$idx - 1];
- }
- }
-
- protected function lib_isnumber($value) {
- return $this->toBool($value[0] == "number");
- }
-
- protected function lib_isstring($value) {
- return $this->toBool($value[0] == "string");
- }
-
- protected function lib_iscolor($value) {
- return $this->toBool($this->coerceColor($value));
- }
-
- protected function lib_iskeyword($value) {
- return $this->toBool($value[0] == "keyword");
- }
-
- protected function lib_ispixel($value) {
- return $this->toBool($value[0] == "number" && $value[2] == "px");
- }
-
- protected function lib_ispercentage($value) {
- return $this->toBool($value[0] == "number" && $value[2] == "%");
- }
-
- protected function lib_isem($value) {
- return $this->toBool($value[0] == "number" && $value[2] == "em");
- }
-
- protected function lib_isrem($value) {
- return $this->toBool($value[0] == "number" && $value[2] == "rem");
- }
-
- protected function lib_rgbahex($color) {
- $color = $this->coerceColor($color);
- if (is_null($color))
- $this->throwError("color expected for rgbahex");
-
- return sprintf("#%02x%02x%02x%02x",
- isset($color[4]) ? $color[4]*255 : 255,
- $color[1],$color[2], $color[3]);
- }
-
- protected function lib_argb($color){
- return $this->lib_rgbahex($color);
- }
-
- /**
- * Given an url, decide whether to output a regular link or the base64-encoded contents of the file
- *
- * @param array $value either an argument list (two strings) or a single string
- * @return string formatted url(), either as a link or base64-encoded
- */
- protected function lib_data_uri($value) {
- $mime = ($value[0] === 'list') ? $value[2][0][2] : null;
- $url = ($value[0] === 'list') ? $value[2][1][2][0] : $value[2][0];
-
- $fullpath = $this->findImport($url);
-
- if($fullpath && ($fsize = filesize($fullpath)) !== false) {
- // IE8 can't handle data uris larger than 32KB
- if($fsize/1024 < 32) {
- if(is_null($mime)) {
- if(class_exists('finfo')) { // php 5.3+
- $finfo = new finfo(FILEINFO_MIME);
- $mime = explode('; ', $finfo->file($fullpath));
- $mime = $mime[0];
- } elseif(function_exists('mime_content_type')) { // PHP 5.2
- $mime = mime_content_type($fullpath);
- }
- }
-
- if(!is_null($mime)) // fallback if the MIME type is still unknown
- $url = sprintf('data:%s;base64,%s', $mime, base64_encode(file_get_contents($fullpath)));
- }
- }
-
- return 'url("'.$url.'")';
- }
-
- // utility func to unquote a string
- protected function lib_e($arg) {
- switch ($arg[0]) {
- case "list":
- $items = $arg[2];
- if (isset($items[0])) {
- return $this->lib_e($items[0]);
- }
- $this->throwError("unrecognised input");
- case "string":
- $arg[1] = "";
- return $arg;
- case "keyword":
- return $arg;
- default:
- return array("keyword", $this->compileValue($arg));
- }
- }
-
- protected function lib__sprintf($args) {
- if ($args[0] != "list") return $args;
- $values = $args[2];
- $string = array_shift($values);
- $template = $this->compileValue($this->lib_e($string));
-
- $i = 0;
- if (preg_match_all('/%[dsa]/', $template, $m)) {
- foreach ($m[0] as $match) {
- $val = isset($values[$i]) ?
- $this->reduce($values[$i]) : array('keyword', '');
-
- // lessjs compat, renders fully expanded color, not raw color
- if ($color = $this->coerceColor($val)) {
- $val = $color;
- }
-
- $i++;
- $rep = $this->compileValue($this->lib_e($val));
- $template = preg_replace('/'.self::preg_quote($match).'/',
- $rep, $template, 1);
- }
- }
-
- $d = $string[0] == "string" ? $string[1] : '"';
- return array("string", $d, array($template));
- }
-
- protected function lib_floor($arg) {
- $value = $this->assertNumber($arg);
- return array("number", floor($value), $arg[2]);
- }
-
- protected function lib_ceil($arg) {
- $value = $this->assertNumber($arg);
- return array("number", ceil($value), $arg[2]);
- }
-
- protected function lib_round($arg) {
- if($arg[0] != "list") {
- $value = $this->assertNumber($arg);
- return array("number", round($value), $arg[2]);
- } else {
- $value = $this->assertNumber($arg[2][0]);
- $precision = $this->assertNumber($arg[2][1]);
- return array("number", round($value, $precision), $arg[2][0][2]);
- }
- }
-
- protected function lib_unit($arg) {
- if ($arg[0] == "list") {
- list($number, $newUnit) = $arg[2];
- return array("number", $this->assertNumber($number),
- $this->compileValue($this->lib_e($newUnit)));
- } else {
- return array("number", $this->assertNumber($arg), "");
- }
- }
-
- /**
- * Helper function to get arguments for color manipulation functions.
- * takes a list that contains a color like thing and a percentage
- */
- public function colorArgs($args) {
- if ($args[0] != 'list' || count($args[2]) < 2) {
- return array(array('color', 0, 0, 0), 0);
- }
- list($color, $delta) = $args[2];
- $color = $this->assertColor($color);
- $delta = floatval($delta[1]);
-
- return array($color, $delta);
- }
-
- protected function lib_darken($args) {
- list($color, $delta) = $this->colorArgs($args);
-
- $hsl = $this->toHSL($color);
- $hsl[3] = $this->clamp($hsl[3] - $delta, 100);
- return $this->toRGB($hsl);
- }
-
- protected function lib_lighten($args) {
- list($color, $delta) = $this->colorArgs($args);
-
- $hsl = $this->toHSL($color);
- $hsl[3] = $this->clamp($hsl[3] + $delta, 100);
- return $this->toRGB($hsl);
- }
-
- protected function lib_saturate($args) {
- list($color, $delta) = $this->colorArgs($args);
-
- $hsl = $this->toHSL($color);
- $hsl[2] = $this->clamp($hsl[2] + $delta, 100);
- return $this->toRGB($hsl);
- }
-
- protected function lib_desaturate($args) {
- list($color, $delta) = $this->colorArgs($args);
-
- $hsl = $this->toHSL($color);
- $hsl[2] = $this->clamp($hsl[2] - $delta, 100);
- return $this->toRGB($hsl);
- }
-
- protected function lib_spin($args) {
- list($color, $delta) = $this->colorArgs($args);
-
- $hsl = $this->toHSL($color);
-
- $hsl[1] = $hsl[1] + $delta % 360;
- if ($hsl[1] < 0) $hsl[1] += 360;
-
- return $this->toRGB($hsl);
- }
-
- protected function lib_fadeout($args) {
- list($color, $delta) = $this->colorArgs($args);
- $color[4] = $this->clamp((isset($color[4]) ? $color[4] : 1) - $delta/100);
- return $color;
- }
-
- protected function lib_fadein($args) {
- list($color, $delta) = $this->colorArgs($args);
- $color[4] = $this->clamp((isset($color[4]) ? $color[4] : 1) + $delta/100);
- return $color;
- }
-
- protected function lib_hue($color) {
- $hsl = $this->toHSL($this->assertColor($color));
- return round($hsl[1]);
- }
-
- protected function lib_saturation($color) {
- $hsl = $this->toHSL($this->assertColor($color));
- return round($hsl[2]);
- }
-
- protected function lib_lightness($color) {
- $hsl = $this->toHSL($this->assertColor($color));
- return round($hsl[3]);
- }
-
- // get the alpha of a color
- // defaults to 1 for non-colors or colors without an alpha
- protected function lib_alpha($value) {
- if (!is_null($color = $this->coerceColor($value))) {
- return isset($color[4]) ? $color[4] : 1;
- }
- }
-
- // set the alpha of the color
- protected function lib_fade($args) {
- list($color, $alpha) = $this->colorArgs($args);
- $color[4] = $this->clamp($alpha / 100.0);
- return $color;
- }
-
- protected function lib_percentage($arg) {
- $num = $this->assertNumber($arg);
- return array("number", $num*100, "%");
- }
-
- // mixes two colors by weight
- // mix(@color1, @color2, [@weight: 50%]);
- // http://sass-lang.com/docs/yardoc/Sass/Script/Functions.html#mix-instance_method
- protected function lib_mix($args) {
- if ($args[0] != "list" || count($args[2]) < 2)
- $this->throwError("mix expects (color1, color2, weight)");
-
- list($first, $second) = $args[2];
- $first = $this->assertColor($first);
- $second = $this->assertColor($second);
-
- $first_a = $this->lib_alpha($first);
- $second_a = $this->lib_alpha($second);
-
- if (isset($args[2][2])) {
- $weight = $args[2][2][1] / 100.0;
- } else {
- $weight = 0.5;
- }
-
- $w = $weight * 2 - 1;
- $a = $first_a - $second_a;
-
- $w1 = (($w * $a == -1 ? $w : ($w + $a)/(1 + $w * $a)) + 1) / 2.0;
- $w2 = 1.0 - $w1;
-
- $new = array('color',
- $w1 * $first[1] + $w2 * $second[1],
- $w1 * $first[2] + $w2 * $second[2],
- $w1 * $first[3] + $w2 * $second[3],
- );
-
- if ($first_a != 1.0 || $second_a != 1.0) {
- $new[] = $first_a * $weight + $second_a * ($weight - 1);
- }
-
- return $this->fixColor($new);
- }
-
- protected function lib_contrast($args) {
- $darkColor = array('color', 0, 0, 0);
- $lightColor = array('color', 255, 255, 255);
- $threshold = 0.43;
-
- if ( $args[0] == 'list' ) {
- $inputColor = ( isset($args[2][0]) ) ? $this->assertColor($args[2][0]) : $lightColor;
- $darkColor = ( isset($args[2][1]) ) ? $this->assertColor($args[2][1]) : $darkColor;
- $lightColor = ( isset($args[2][2]) ) ? $this->assertColor($args[2][2]) : $lightColor;
- $threshold = ( isset($args[2][3]) ) ? $this->assertNumber($args[2][3]) : $threshold;
- }
- else {
- $inputColor = $this->assertColor($args);
- }
-
- $inputColor = $this->coerceColor($inputColor);
- $darkColor = $this->coerceColor($darkColor);
- $lightColor = $this->coerceColor($lightColor);
-
- //Figure out which is actually light and dark!
- if ( $this->lib_luma($darkColor) > $this->lib_luma($lightColor) ) {
- $t = $lightColor;
- $lightColor = $darkColor;
- $darkColor = $t;
- }
-
- $inputColor_alpha = $this->lib_alpha($inputColor);
- if ( ( $this->lib_luma($inputColor) * $inputColor_alpha) < $threshold) {
- return $lightColor;
- }
- return $darkColor;
- }
-
- protected function lib_luma($color) {
- $color = $this->coerceColor($color);
- return (0.2126 * $color[0] / 255) + (0.7152 * $color[1] / 255) + (0.0722 * $color[2] / 255);
- }
-
-
- public function assertColor($value, $error = "expected color value") {
- $color = $this->coerceColor($value);
- if (is_null($color)) $this->throwError($error);
- return $color;
- }
-
- public function assertNumber($value, $error = "expecting number") {
- if ($value[0] == "number") return $value[1];
- $this->throwError($error);
- }
-
- public function assertArgs($value, $expectedArgs, $name="") {
- if ($expectedArgs == 1) {
- return $value;
- } else {
- if ($value[0] !== "list" || $value[1] != ",") $this->throwError("expecting list");
- $values = $value[2];
- $numValues = count($values);
- if ($expectedArgs != $numValues) {
- if ($name) {
- $name = $name . ": ";
- }
-
- $this->throwError("${name}expecting $expectedArgs arguments, got $numValues");
- }
-
- return $values;
- }
- }
-
- protected function toHSL($color) {
- if ($color[0] == 'hsl') return $color;
-
- $r = $color[1] / 255;
- $g = $color[2] / 255;
- $b = $color[3] / 255;
-
- $min = min($r, $g, $b);
- $max = max($r, $g, $b);
-
- $L = ($min + $max) / 2;
- if ($min == $max) {
- $S = $H = 0;
- } else {
- if ($L < 0.5)
- $S = ($max - $min)/($max + $min);
- else
- $S = ($max - $min)/(2.0 - $max - $min);
-
- if ($r == $max) $H = ($g - $b)/($max - $min);
- elseif ($g == $max) $H = 2.0 + ($b - $r)/($max - $min);
- elseif ($b == $max) $H = 4.0 + ($r - $g)/($max - $min);
-
- }
-
- $out = array('hsl',
- ($H < 0 ? $H + 6 : $H)*60,
- $S*100,
- $L*100,
- );
-
- if (count($color) > 4) $out[] = $color[4]; // copy alpha
- return $out;
- }
-
- protected function toRGB_helper($comp, $temp1, $temp2) {
- if ($comp < 0) $comp += 1.0;
- elseif ($comp > 1) $comp -= 1.0;
-
- if (6 * $comp < 1) return $temp1 + ($temp2 - $temp1) * 6 * $comp;
- if (2 * $comp < 1) return $temp2;
- if (3 * $comp < 2) return $temp1 + ($temp2 - $temp1)*((2/3) - $comp) * 6;
-
- return $temp1;
- }
-
- /**
- * Converts a hsl array into a color value in rgb.
- * Expects H to be in range of 0 to 360, S and L in 0 to 100
- */
- protected function toRGB($color) {
- if ($color[0] == 'color') return $color;
-
- $H = $color[1] / 360;
- $S = $color[2] / 100;
- $L = $color[3] / 100;
-
- if ($S == 0) {
- $r = $g = $b = $L;
- } else {
- $temp2 = $L < 0.5 ?
- $L*(1.0 + $S) :
- $L + $S - $L * $S;
-
- $temp1 = 2.0 * $L - $temp2;
-
- $r = $this->toRGB_helper($H + 1/3, $temp1, $temp2);
- $g = $this->toRGB_helper($H, $temp1, $temp2);
- $b = $this->toRGB_helper($H - 1/3, $temp1, $temp2);
- }
-
- // $out = array('color', round($r*255), round($g*255), round($b*255));
- $out = array('color', $r*255, $g*255, $b*255);
- if (count($color) > 4) $out[] = $color[4]; // copy alpha
- return $out;
- }
-
- protected function clamp($v, $max = 1, $min = 0) {
- return min($max, max($min, $v));
- }
-
- /**
- * Convert the rgb, rgba, hsl color literals of function type
- * as returned by the parser into values of color type.
- */
- protected function funcToColor($func) {
- $fname = $func[1];
- if ($func[2][0] != 'list') return false; // need a list of arguments
- $rawComponents = $func[2][2];
-
- if ($fname == 'hsl' || $fname == 'hsla') {
- $hsl = array('hsl');
- $i = 0;
- foreach ($rawComponents as $c) {
- $val = $this->reduce($c);
- $val = isset($val[1]) ? floatval($val[1]) : 0;
-
- if ($i == 0) $clamp = 360;
- elseif ($i < 3) $clamp = 100;
- else $clamp = 1;
-
- $hsl[] = $this->clamp($val, $clamp);
- $i++;
- }
-
- while (count($hsl) < 4) $hsl[] = 0;
- return $this->toRGB($hsl);
-
- } elseif ($fname == 'rgb' || $fname == 'rgba') {
- $components = array();
- $i = 1;
- foreach ($rawComponents as $c) {
- $c = $this->reduce($c);
- if ($i < 4) {
- if ($c[0] == "number" && $c[2] == "%") {
- $components[] = 255 * ($c[1] / 100);
- } else {
- $components[] = floatval($c[1]);
- }
- } elseif ($i == 4) {
- if ($c[0] == "number" && $c[2] == "%") {
- $components[] = 1.0 * ($c[1] / 100);
- } else {
- $components[] = floatval($c[1]);
- }
- } else break;
-
- $i++;
- }
- while (count($components) < 3) $components[] = 0;
- array_unshift($components, 'color');
- return $this->fixColor($components);
- }
-
- return false;
- }
-
- protected function reduce($value, $forExpression = false) {
- switch ($value[0]) {
- case "interpolate":
- $reduced = $this->reduce($value[1]);
- $var = $this->compileValue($reduced);
- $res = $this->reduce(array("variable", $this->vPrefix . $var));
-
- if ($res[0] == "raw_color") {
- $res = $this->coerceColor($res);
- }
-
- if (empty($value[2])) $res = $this->lib_e($res);
-
- return $res;
- case "variable":
- $key = $value[1];
- if (is_array($key)) {
- $key = $this->reduce($key);
- $key = $this->vPrefix . $this->compileValue($this->lib_e($key));
- }
-
- $seen =& $this->env->seenNames;
-
- if (!empty($seen[$key])) {
- $this->throwError("infinite loop detected: $key");
- }
-
- $seen[$key] = true;
- $out = $this->reduce($this->get($key));
- $seen[$key] = false;
- return $out;
- case "list":
- foreach ($value[2] as &$item) {
- $item = $this->reduce($item, $forExpression);
- }
- return $value;
- case "expression":
- return $this->evaluate($value);
- case "string":
- foreach ($value[2] as &$part) {
- if (is_array($part)) {
- $strip = $part[0] == "variable";
- $part = $this->reduce($part);
- if ($strip) $part = $this->lib_e($part);
- }
- }
- return $value;
- case "escape":
- list(,$inner) = $value;
- return $this->lib_e($this->reduce($inner));
- case "function":
- $color = $this->funcToColor($value);
- if ($color) return $color;
-
- list(, $name, $args) = $value;
- if ($name == "%") $name = "_sprintf";
-
- $f = isset($this->libFunctions[$name]) ?
- $this->libFunctions[$name] : array($this, 'lib_'.str_replace('-', '_', $name));
-
- if (is_callable($f)) {
- if ($args[0] == 'list')
- $args = self::compressList($args[2], $args[1]);
-
- $ret = call_user_func($f, $this->reduce($args, true), $this);
-
- if (is_null($ret)) {
- return array("string", "", array(
- $name, "(", $args, ")"
- ));
- }
-
- // convert to a typed value if the result is a php primitive
- if (is_numeric($ret)) $ret = array('number', $ret, "");
- elseif (!is_array($ret)) $ret = array('keyword', $ret);
-
- return $ret;
- }
-
- // plain function, reduce args
- $value[2] = $this->reduce($value[2]);
- return $value;
- case "unary":
- list(, $op, $exp) = $value;
- $exp = $this->reduce($exp);
-
- if ($exp[0] == "number") {
- switch ($op) {
- case "+":
- return $exp;
- case "-":
- $exp[1] *= -1;
- return $exp;
- }
- }
- return array("string", "", array($op, $exp));
- }
-
- if ($forExpression) {
- switch ($value[0]) {
- case "keyword":
- if ($color = $this->coerceColor($value)) {
- return $color;
- }
- break;
- case "raw_color":
- return $this->coerceColor($value);
- }
- }
-
- return $value;
- }
-
-
- // coerce a value for use in color operation
- protected function coerceColor($value) {
- switch($value[0]) {
- case 'color': return $value;
- case 'raw_color':
- $c = array("color", 0, 0, 0);
- $colorStr = substr($value[1], 1);
- $num = hexdec($colorStr);
- $width = strlen($colorStr) == 3 ? 16 : 256;
-
- for ($i = 3; $i > 0; $i--) { // 3 2 1
- $t = $num % $width;
- $num /= $width;
-
- $c[$i] = $t * (256/$width) + $t * floor(16/$width);
- }
-
- return $c;
- case 'keyword':
- $name = $value[1];
- if (isset(self::$cssColors[$name])) {
- $rgba = explode(',', self::$cssColors[$name]);
-
- if(isset($rgba[3]))
- return array('color', $rgba[0], $rgba[1], $rgba[2], $rgba[3]);
-
- return array('color', $rgba[0], $rgba[1], $rgba[2]);
- }
- return null;
- }
- }
-
- // make something string like into a string
- protected function coerceString($value) {
- switch ($value[0]) {
- case "string":
- return $value;
- case "keyword":
- return array("string", "", array($value[1]));
- }
- return null;
- }
-
- // turn list of length 1 into value type
- protected function flattenList($value) {
- if ($value[0] == "list" && count($value[2]) == 1) {
- return $this->flattenList($value[2][0]);
- }
- return $value;
- }
-
- public function toBool($a) {
- if ($a) return self::$TRUE;
- else return self::$FALSE;
- }
-
- // evaluate an expression
- protected function evaluate($exp) {
- list(, $op, $left, $right, $whiteBefore, $whiteAfter) = $exp;
-
- $left = $this->reduce($left, true);
- $right = $this->reduce($right, true);
-
- if ($leftColor = $this->coerceColor($left)) {
- $left = $leftColor;
- }
-
- if ($rightColor = $this->coerceColor($right)) {
- $right = $rightColor;
- }
-
- $ltype = $left[0];
- $rtype = $right[0];
-
- // operators that work on all types
- if ($op == "and") {
- return $this->toBool($left == self::$TRUE && $right == self::$TRUE);
- }
-
- if ($op == "=") {
- return $this->toBool($this->eq($left, $right) );
- }
-
- if ($op == "+" && !is_null($str = $this->stringConcatenate($left, $right))) {
- return $str;
- }
-
- // type based operators
- $fname = "op_${ltype}_${rtype}";
- if (is_callable(array($this, $fname))) {
- $out = $this->$fname($op, $left, $right);
- if (!is_null($out)) return $out;
- }
-
- // make the expression look it did before being parsed
- $paddedOp = $op;
- if ($whiteBefore) $paddedOp = " " . $paddedOp;
- if ($whiteAfter) $paddedOp .= " ";
-
- return array("string", "", array($left, $paddedOp, $right));
- }
-
- protected function stringConcatenate($left, $right) {
- if ($strLeft = $this->coerceString($left)) {
- if ($right[0] == "string") {
- $right[1] = "";
- }
- $strLeft[2][] = $right;
- return $strLeft;
- }
-
- if ($strRight = $this->coerceString($right)) {
- array_unshift($strRight[2], $left);
- return $strRight;
- }
- }
-
-
- // make sure a color's components don't go out of bounds
- protected function fixColor($c) {
- foreach (range(1, 3) as $i) {
- if ($c[$i] < 0) $c[$i] = 0;
- if ($c[$i] > 255) $c[$i] = 255;
- }
-
- return $c;
- }
-
- protected function op_number_color($op, $lft, $rgt) {
- if ($op == '+' || $op == '*') {
- return $this->op_color_number($op, $rgt, $lft);
- }
- }
-
- protected function op_color_number($op, $lft, $rgt) {
- if ($rgt[0] == '%') $rgt[1] /= 100;
-
- return $this->op_color_color($op, $lft,
- array_fill(1, count($lft) - 1, $rgt[1]));
- }
-
- protected function op_color_color($op, $left, $right) {
- $out = array('color');
- $max = count($left) > count($right) ? count($left) : count($right);
- foreach (range(1, $max - 1) as $i) {
- $lval = isset($left[$i]) ? $left[$i] : 0;
- $rval = isset($right[$i]) ? $right[$i] : 0;
- switch ($op) {
- case '+':
- $out[] = $lval + $rval;
- break;
- case '-':
- $out[] = $lval - $rval;
- break;
- case '*':
- $out[] = $lval * $rval;
- break;
- case '%':
- $out[] = $lval % $rval;
- break;
- case '/':
- if ($rval == 0) $this->throwError("evaluate error: can't divide by zero");
- $out[] = $lval / $rval;
- break;
- default:
- $this->throwError('evaluate error: color op number failed on op '.$op);
- }
- }
- return $this->fixColor($out);
- }
-
- function lib_red($color){
- $color = $this->coerceColor($color);
- if (is_null($color)) {
- $this->throwError('color expected for red()');
- }
-
- return $color[1];
- }
-
- function lib_green($color){
- $color = $this->coerceColor($color);
- if (is_null($color)) {
- $this->throwError('color expected for green()');
- }
-
- return $color[2];
- }
-
- function lib_blue($color){
- $color = $this->coerceColor($color);
- if (is_null($color)) {
- $this->throwError('color expected for blue()');
- }
-
- return $color[3];
- }
-
-
- // operator on two numbers
- protected function op_number_number($op, $left, $right) {
- $unit = empty($left[2]) ? $right[2] : $left[2];
-
- $value = 0;
- switch ($op) {
- case '+':
- $value = $left[1] + $right[1];
- break;
- case '*':
- $value = $left[1] * $right[1];
- break;
- case '-':
- $value = $left[1] - $right[1];
- break;
- case '%':
- $value = $left[1] % $right[1];
- break;
- case '/':
- if ($right[1] == 0) $this->throwError('parse error: divide by zero');
- $value = $left[1] / $right[1];
- break;
- case '<':
- return $this->toBool($left[1] < $right[1]);
- case '>':
- return $this->toBool($left[1] > $right[1]);
- case '>=':
- return $this->toBool($left[1] >= $right[1]);
- case '=<':
- return $this->toBool($left[1] <= $right[1]);
- default:
- $this->throwError('parse error: unknown number operator: '.$op);
- }
-
- return array("number", $value, $unit);
- }
-
-
- /* environment functions */
-
- protected function makeOutputBlock($type, $selectors = null) {
- $b = new stdclass;
- $b->lines = array();
- $b->children = array();
- $b->selectors = $selectors;
- $b->type = $type;
- $b->parent = $this->scope;
- return $b;
- }
-
- // the state of execution
- protected function pushEnv($block = null) {
- $e = new stdclass;
- $e->parent = $this->env;
- $e->store = array();
- $e->block = $block;
-
- $this->env = $e;
- return $e;
- }
-
- // pop something off the stack
- protected function popEnv() {
- $old = $this->env;
- $this->env = $this->env->parent;
- return $old;
- }
-
- // set something in the current env
- protected function set($name, $value) {
- $this->env->store[$name] = $value;
- }
-
-
- // get the highest occurrence entry for a name
- protected function get($name) {
- $current = $this->env;
-
- $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;
- }
- }
-
- $this->throwError("variable $name is undefined");
- }
-
- // inject array of unparsed strings into environment as variables
- protected function injectVariables($args) {
- $this->pushEnv();
- $parser = new lessc_parser($this, __METHOD__);
- foreach ($args as $name => $strValue) {
- if ($name{0} != '@') $name = '@'.$name;
- $parser->count = 0;
- $parser->buffer = (string)$strValue;
- if (!$parser->propertyValue($value)) {
- throw new Exception("failed to parse passed in variable $name: $strValue");
- }
-
- $this->set($name, $value);
- }
- }
-
- /**
- * Initialize any static state, can initialize parser for a file
- * $opts isn't used yet
- */
- public function __construct($fname = null) {
- if ($fname !== null) {
- // used for deprecated parse method
- $this->_parseFile = $fname;
- }
- }
-
- public function compile($string, $name = null) {
- $locale = setlocale(LC_NUMERIC, 0);
- setlocale(LC_NUMERIC, "C");
-
- $this->parser = $this->makeParser($name);
- $root = $this->parser->parse($string);
-
- $this->env = null;
- $this->scope = null;
-
- $this->formatter = $this->newFormatter();
-
- if (!empty($this->registeredVars)) {
- $this->injectVariables($this->registeredVars);
- }
-
- $this->sourceParser = $this->parser; // used for error messages
- $this->compileBlock($root);
-
- ob_start();
- $this->formatter->block($this->scope);
- $out = ob_get_clean();
- setlocale(LC_NUMERIC, $locale);
- return $out;
- }
-
- public function compileFile($fname, $outFname = null) {
- if (!is_readable($fname)) {
- throw new Exception('load error: failed to find '.$fname);
- }
-
- $pi = pathinfo($fname);
-
- $oldImport = $this->importDir;
-
- $this->importDir = (array)$this->importDir;
- $this->importDir[] = $pi['dirname'].'/';
-
- $this->addParsedFile($fname);
-
- $out = $this->compile(file_get_contents($fname), $fname);
-
- $this->importDir = $oldImport;
-
- if ($outFname !== null) {
- return file_put_contents($outFname, $out);
- }
-
- return $out;
- }
-
- // compile only if changed input has changed or output doesn't exist
- public function checkedCompile($in, $out) {
- if (!is_file($out) || filemtime($in) > filemtime($out)) {
- $this->compileFile($in, $out);
- return true;
- }
- return false;
- }
-
- /**
- * Execute lessphp on a .less file or a lessphp cache structure
- *
- * The lessphp cache structure contains information about a specific
- * less file having been parsed. It can be used as a hint for future
- * calls to determine whether or not a rebuild is required.
- *
- * The cache structure contains two important keys that may be used
- * externally:
- *
- * compiled: The final compiled CSS
- * updated: The time (in seconds) the CSS was last compiled
- *
- * The cache structure is a plain-ol' PHP associative array and can
- * be serialized and unserialized without a hitch.
- *
- * @param mixed $in Input
- * @param bool $force Force rebuild?
- * @return array lessphp cache structure
- */
- public function cachedCompile($in, $force = false) {
- // assume no root
- $root = null;
-
- if (is_string($in)) {
- $root = $in;
- } elseif (is_array($in) and isset($in['root'])) {
- if ($force or ! isset($in['files'])) {
- // If we are forcing a recompile or if for some reason the
- // structure does not contain any file information we should
- // specify the root to trigger a rebuild.
- $root = $in['root'];
- } elseif (isset($in['files']) and is_array($in['files'])) {
- foreach ($in['files'] as $fname => $ftime ) {
- if (!file_exists($fname) or filemtime($fname) > $ftime) {
- // One of the files we knew about previously has changed
- // so we should look at our incoming root again.
- $root = $in['root'];
- break;
- }
- }
- }
- } else {
- // TODO: Throw an exception? We got neither a string nor something
- // that looks like a compatible lessphp cache structure.
- return null;
- }
-
- if ($root !== null) {
- // If we have a root value which means we should rebuild.
- $out = array();
- $out['root'] = $root;
- $out['compiled'] = $this->compileFile($root);
- $out['files'] = $this->allParsedFiles();
- $out['updated'] = time();
- return $out;
- } else {
- // No changes, pass back the structure
- // we were given initially.
- return $in;
- }
-
- }
-
- // parse and compile buffer
- // This is deprecated
- public function parse($str = null, $initialVariables = null) {
- if (is_array($str)) {
- $initialVariables = $str;
- $str = null;
- }
-
- $oldVars = $this->registeredVars;
- if ($initialVariables !== null) {
- $this->setVariables($initialVariables);
- }
-
- if ($str == null) {
- if (empty($this->_parseFile)) {
- throw new exception("nothing to parse");
- }
-
- $out = $this->compileFile($this->_parseFile);
- } else {
- $out = $this->compile($str);
- }
-
- $this->registeredVars = $oldVars;
- return $out;
- }
-
- protected function makeParser($name) {
- $parser = new lessc_parser($this, $name);
- $parser->writeComments = $this->preserveComments;
-
- return $parser;
- }
-
- public function setFormatter($name) {
- $this->formatterName = $name;
- }
-
- protected function newFormatter() {
- $className = "lessc_formatter_lessjs";
- if (!empty($this->formatterName)) {
- if (!is_string($this->formatterName))
- return $this->formatterName;
- $className = "lessc_formatter_$this->formatterName";
- }
-
- return new $className;
- }
-
- public function setPreserveComments($preserve) {
- $this->preserveComments = $preserve;
- }
-
- public function registerFunction($name, $func) {
- $this->libFunctions[$name] = $func;
- }
-
- public function unregisterFunction($name) {
- unset($this->libFunctions[$name]);
- }
-
- public function setVariables($variables) {
- $this->registeredVars = array_merge($this->registeredVars, $variables);
- }
-
- public function unsetVariable($name) {
- unset($this->registeredVars[$name]);
- }
-
- public function setImportDir($dirs) {
- $this->importDir = (array)$dirs;
- }
-
- public function addImportDir($dir) {
- $this->importDir = (array)$this->importDir;
- $this->importDir[] = $dir;
- }
-
- public function allParsedFiles() {
- return $this->allParsedFiles;
- }
-
- public function addParsedFile($file) {
- $this->allParsedFiles[realpath($file)] = filemtime($file);
- }
-
- /**
- * Uses the current value of $this->count to show line and line number
- */
- public function throwError($msg = null) {
- if ($this->sourceLoc >= 0) {
- $this->sourceParser->throwError($msg, $this->sourceLoc);
- }
- throw new exception($msg);
- }
-
- // compile file $in to file $out if $in is newer than $out
- // returns true when it compiles, false otherwise
- public static function ccompile($in, $out, $less = null) {
- if ($less === null) {
- $less = new self;
- }
- return $less->checkedCompile($in, $out);
- }
-
- public static function cexecute($in, $force = false, $less = null) {
- if ($less === null) {
- $less = new self;
- }
- return $less->cachedCompile($in, $force);
- }
-
- static protected $cssColors = array(
- 'aliceblue' => '240,248,255',
- 'antiquewhite' => '250,235,215',
- 'aqua' => '0,255,255',
- 'aquamarine' => '127,255,212',
- 'azure' => '240,255,255',
- 'beige' => '245,245,220',
- 'bisque' => '255,228,196',
- 'black' => '0,0,0',
- 'blanchedalmond' => '255,235,205',
- 'blue' => '0,0,255',
- 'blueviolet' => '138,43,226',
- 'brown' => '165,42,42',
- 'burlywood' => '222,184,135',
- 'cadetblue' => '95,158,160',
- 'chartreuse' => '127,255,0',
- 'chocolate' => '210,105,30',
- 'coral' => '255,127,80',
- 'cornflowerblue' => '100,149,237',
- 'cornsilk' => '255,248,220',
- 'crimson' => '220,20,60',
- 'cyan' => '0,255,255',
- 'darkblue' => '0,0,139',
- 'darkcyan' => '0,139,139',
- 'darkgoldenrod' => '184,134,11',
- 'darkgray' => '169,169,169',
- 'darkgreen' => '0,100,0',
- 'darkgrey' => '169,169,169',
- 'darkkhaki' => '189,183,107',
- 'darkmagenta' => '139,0,139',
- 'darkolivegreen' => '85,107,47',
- 'darkorange' => '255,140,0',
- 'darkorchid' => '153,50,204',
- 'darkred' => '139,0,0',
- 'darksalmon' => '233,150,122',
- 'darkseagreen' => '143,188,143',
- 'darkslateblue' => '72,61,139',
- 'darkslategray' => '47,79,79',
- 'darkslategrey' => '47,79,79',
- 'darkturquoise' => '0,206,209',
- 'darkviolet' => '148,0,211',
- 'deeppink' => '255,20,147',
- 'deepskyblue' => '0,191,255',
- 'dimgray' => '105,105,105',
- 'dimgrey' => '105,105,105',
- 'dodgerblue' => '30,144,255',
- 'firebrick' => '178,34,34',
- 'floralwhite' => '255,250,240',
- 'forestgreen' => '34,139,34',
- 'fuchsia' => '255,0,255',
- 'gainsboro' => '220,220,220',
- 'ghostwhite' => '248,248,255',
- 'gold' => '255,215,0',
- 'goldenrod' => '218,165,32',
- 'gray' => '128,128,128',
- 'green' => '0,128,0',
- 'greenyellow' => '173,255,47',
- 'grey' => '128,128,128',
- 'honeydew' => '240,255,240',
- 'hotpink' => '255,105,180',
- 'indianred' => '205,92,92',
- 'indigo' => '75,0,130',
- 'ivory' => '255,255,240',
- 'khaki' => '240,230,140',
- 'lavender' => '230,230,250',
- 'lavenderblush' => '255,240,245',
- 'lawngreen' => '124,252,0',
- 'lemonchiffon' => '255,250,205',
- 'lightblue' => '173,216,230',
- 'lightcoral' => '240,128,128',
- 'lightcyan' => '224,255,255',
- 'lightgoldenrodyellow' => '250,250,210',
- 'lightgray' => '211,211,211',
- 'lightgreen' => '144,238,144',
- 'lightgrey' => '211,211,211',
- 'lightpink' => '255,182,193',
- 'lightsalmon' => '255,160,122',
- 'lightseagreen' => '32,178,170',
- 'lightskyblue' => '135,206,250',
- 'lightslategray' => '119,136,153',
- 'lightslategrey' => '119,136,153',
- 'lightsteelblue' => '176,196,222',
- 'lightyellow' => '255,255,224',
- 'lime' => '0,255,0',
- 'limegreen' => '50,205,50',
- 'linen' => '250,240,230',
- 'magenta' => '255,0,255',
- 'maroon' => '128,0,0',
- 'mediumaquamarine' => '102,205,170',
- 'mediumblue' => '0,0,205',
- 'mediumorchid' => '186,85,211',
- 'mediumpurple' => '147,112,219',
- 'mediumseagreen' => '60,179,113',
- 'mediumslateblue' => '123,104,238',
- 'mediumspringgreen' => '0,250,154',
- 'mediumturquoise' => '72,209,204',
- 'mediumvioletred' => '199,21,133',
- 'midnightblue' => '25,25,112',
- 'mintcream' => '245,255,250',
- 'mistyrose' => '255,228,225',
- 'moccasin' => '255,228,181',
- 'navajowhite' => '255,222,173',
- 'navy' => '0,0,128',
- 'oldlace' => '253,245,230',
- 'olive' => '128,128,0',
- 'olivedrab' => '107,142,35',
- 'orange' => '255,165,0',
- 'orangered' => '255,69,0',
- 'orchid' => '218,112,214',
- 'palegoldenrod' => '238,232,170',
- 'palegreen' => '152,251,152',
- 'paleturquoise' => '175,238,238',
- 'palevioletred' => '219,112,147',
- 'papayawhip' => '255,239,213',
- 'peachpuff' => '255,218,185',
- 'peru' => '205,133,63',
- 'pink' => '255,192,203',
- 'plum' => '221,160,221',
- 'powderblue' => '176,224,230',
- 'purple' => '128,0,128',
- 'red' => '255,0,0',
- 'rosybrown' => '188,143,143',
- 'royalblue' => '65,105,225',
- 'saddlebrown' => '139,69,19',
- 'salmon' => '250,128,114',
- 'sandybrown' => '244,164,96',
- 'seagreen' => '46,139,87',
- 'seashell' => '255,245,238',
- 'sienna' => '160,82,45',
- 'silver' => '192,192,192',
- 'skyblue' => '135,206,235',
- 'slateblue' => '106,90,205',
- 'slategray' => '112,128,144',
- 'slategrey' => '112,128,144',
- 'snow' => '255,250,250',
- 'springgreen' => '0,255,127',
- 'steelblue' => '70,130,180',
- 'tan' => '210,180,140',
- 'teal' => '0,128,128',
- 'thistle' => '216,191,216',
- 'tomato' => '255,99,71',
- 'transparent' => '0,0,0,0',
- 'turquoise' => '64,224,208',
- 'violet' => '238,130,238',
- 'wheat' => '245,222,179',
- 'white' => '255,255,255',
- 'whitesmoke' => '245,245,245',
- 'yellow' => '255,255,0',
- 'yellowgreen' => '154,205,50'
- );
-}
-
-// responsible for taking a string of LESS code and converting it into a
-// syntax tree
-class lessc_parser {
- static protected $nextBlockId = 0; // used to uniquely identify blocks
-
- static protected $precedence = array(
- '=<' => 0,
- '>=' => 0,
- '=' => 0,
- '<' => 0,
- '>' => 0,
-
- '+' => 1,
- '-' => 1,
- '*' => 2,
- '/' => 2,
- '%' => 2,
- );
-
- static protected $whitePattern;
- static protected $commentMulti;
-
- static protected $commentSingle = "//";
- static protected $commentMultiLeft = "/*";
- static protected $commentMultiRight = "*/";
-
- // regex string to match any of the operators
- static protected $operatorString;
-
- // these properties will supress division unless it's inside parenthases
- static protected $supressDivisionProps =
- array('/border-radius$/i', '/^font$/i');
-
- protected $blockDirectives = array("font-face", "keyframes", "page", "-moz-document", "viewport", "-moz-viewport", "-o-viewport", "-ms-viewport");
- protected $lineDirectives = array("charset");
-
- /**
- * if we are in parens we can be more liberal with whitespace around
- * operators because it must evaluate to a single value and thus is less
- * ambiguous.
- *
- * Consider:
- * property1: 10 -5; // is two numbers, 10 and -5
- * property2: (10 -5); // should evaluate to 5
- */
- protected $inParens = false;
-
- // caches preg escaped literals
- static protected $literalCache = array();
-
- public function __construct($lessc, $sourceName = null) {
- $this->eatWhiteDefault = true;
- // reference to less needed for vPrefix, mPrefix, and parentSelector
- $this->lessc = $lessc;
-
- $this->sourceName = $sourceName; // name used for error messages
-
- $this->writeComments = false;
-
- if (!self::$operatorString) {
- self::$operatorString =
- '('.implode('|', array_map(array('lessc', 'preg_quote'),
- array_keys(self::$precedence))).')';
-
- $commentSingle = lessc::preg_quote(self::$commentSingle);
- $commentMultiLeft = lessc::preg_quote(self::$commentMultiLeft);
- $commentMultiRight = lessc::preg_quote(self::$commentMultiRight);
-
- self::$commentMulti = $commentMultiLeft.'.*?'.$commentMultiRight;
- self::$whitePattern = '/'.$commentSingle.'[^\n]*\s*|('.self::$commentMulti.')\s*|\s+/Ais';
- }
- }
-
- public function parse($buffer) {
- $this->count = 0;
- $this->line = 1;
-
- $this->env = null; // block stack
- $this->buffer = $this->writeComments ? $buffer : $this->removeComments($buffer);
- $this->pushSpecialBlock("root");
- $this->eatWhiteDefault = true;
- $this->seenComments = array();
-
- // trim whitespace on head
- // if (preg_match('/^\s+/', $this->buffer, $m)) {
- // $this->line += substr_count($m[0], "\n");
- // $this->buffer = ltrim($this->buffer);
- // }
- $this->whitespace();
-
- // parse the entire file
- while (false !== $this->parseChunk());
-
- if ($this->count != strlen($this->buffer))
- $this->throwError();
-
- // TODO report where the block was opened
- if ( !property_exists($this->env, 'parent') || !is_null($this->env->parent) )
- throw new exception('parse error: unclosed block');
-
- return $this->env;
- }
-
- /**
- * Parse a single chunk off the head of the buffer and append it to the
- * current parse environment.
- * Returns false when the buffer is empty, or when there is an error.
- *
- * This function is called repeatedly until the entire document is
- * parsed.
- *
- * This parser is most similar to a recursive descent parser. Single
- * functions represent discrete grammatical rules for the language, and
- * they are able to capture the text that represents those rules.
- *
- * Consider the function lessc::keyword(). (all parse functions are
- * structured the same)
- *
- * The function takes a single reference argument. When calling the
- * function it will attempt to match a keyword on the head of the buffer.
- * If it is successful, it will place the keyword in the referenced
- * argument, advance the position in the buffer, and return true. If it
- * fails then it won't advance the buffer and it will return false.
- *
- * All of these parse functions are powered by lessc::match(), which behaves
- * the same way, but takes a literal regular expression. Sometimes it is
- * more convenient to use match instead of creating a new function.
- *
- * Because of the format of the functions, to parse an entire string of
- * grammatical rules, you can chain them together using &&.
- *
- * But, if some of the rules in the chain succeed before one fails, then
- * the buffer position will be left at an invalid state. In order to
- * avoid this, lessc::seek() is used to remember and set buffer positions.
- *
- * Before parsing a chain, use $s = $this->seek() to remember the current
- * position into $s. Then if a chain fails, use $this->seek($s) to
- * go back where we started.
- */
- protected function parseChunk() {
- if (empty($this->buffer)) return false;
- $s = $this->seek();
-
- if ($this->whitespace()) {
- return true;
- }
-
- // setting a property
- if ($this->keyword($key) && $this->assign() &&
- $this->propertyValue($value, $key) && $this->end())
- {
- $this->append(array('assign', $key, $value), $s);
- return true;
- } else {
- $this->seek($s);
- }
-
-
- // look for special css blocks
- if ($this->literal('@', false)) {
- $this->count--;
-
- // media
- if ($this->literal('@media')) {
- if (($this->mediaQueryList($mediaQueries) || true)
- && $this->literal('{'))
- {
- $media = $this->pushSpecialBlock("media");
- $media->queries = is_null($mediaQueries) ? array() : $mediaQueries;
- return true;
- } else {
- $this->seek($s);
- return false;
- }
- }
-
- if ($this->literal("@", false) && $this->keyword($dirName)) {
- if ($this->isDirective($dirName, $this->blockDirectives)) {
- if (($this->openString("{", $dirValue, null, array(";")) || true) &&
- $this->literal("{"))
- {
- $dir = $this->pushSpecialBlock("directive");
- $dir->name = $dirName;
- if (isset($dirValue)) $dir->value = $dirValue;
- return true;
- }
- } elseif ($this->isDirective($dirName, $this->lineDirectives)) {
- if ($this->propertyValue($dirValue) && $this->end()) {
- $this->append(array("directive", $dirName, $dirValue));
- return true;
- }
- }
- }
-
- $this->seek($s);
- }
-
- // setting a variable
- if ($this->variable($var) && $this->assign() &&
- $this->propertyValue($value) && $this->end())
- {
- $this->append(array('assign', $var, $value), $s);
- return true;
- } else {
- $this->seek($s);
- }
-
- if ($this->import($importValue)) {
- $this->append($importValue, $s);
- return true;
- }
-
- // opening parametric mixin
- if ($this->tag($tag, true) && $this->argumentDef($args, $isVararg) &&
- ($this->guards($guards) || true) &&
- $this->literal('{'))
- {
- $block = $this->pushBlock($this->fixTags(array($tag)));
- $block->args = $args;
- $block->isVararg = $isVararg;
- if (!empty($guards)) $block->guards = $guards;
- return true;
- } else {
- $this->seek($s);
- }
-
- // opening a simple block
- if ($this->tags($tags) && $this->literal('{', false)) {
- $tags = $this->fixTags($tags);
- $this->pushBlock($tags);
- return true;
- } else {
- $this->seek($s);
- }
-
- // closing a block
- if ($this->literal('}', false)) {
- try {
- $block = $this->pop();
- } catch (exception $e) {
- $this->seek($s);
- $this->throwError($e->getMessage());
- }
-
- $hidden = false;
- if (is_null($block->type)) {
- $hidden = true;
- if (!isset($block->args)) {
- foreach ($block->tags as $tag) {
- if (!is_string($tag) || $tag{0} != $this->lessc->mPrefix) {
- $hidden = false;
- break;
- }
- }
- }
-
- foreach ($block->tags as $tag) {
- if (is_string($tag)) {
- $this->env->children[$tag][] = $block;
- }
- }
- }
-
- if (!$hidden) {
- $this->append(array('block', $block), $s);
- }
-
- // this is done here so comments aren't bundled into he block that
- // was just closed
- $this->whitespace();
- return true;
- }
-
- // mixin
- if ($this->mixinTags($tags) &&
- ($this->argumentDef($argv, $isVararg) || true) &&
- ($this->keyword($suffix) || true) && $this->end())
- {
- $tags = $this->fixTags($tags);
- $this->append(array('mixin', $tags, $argv, $suffix), $s);
- return true;
- } else {
- $this->seek($s);
- }
-
- // spare ;
- if ($this->literal(';')) return true;
-
- return false; // got nothing, throw error
- }
-
- protected function isDirective($dirname, $directives) {
- // TODO: cache pattern in parser
- $pattern = implode("|",
- array_map(array("lessc", "preg_quote"), $directives));
- $pattern = '/^(-[a-z-]+-)?(' . $pattern . ')$/i';
-
- return preg_match($pattern, $dirname);
- }
-
- protected function fixTags($tags) {
- // move @ tags out of variable namespace
- foreach ($tags as &$tag) {
- if ($tag{0} == $this->lessc->vPrefix)
- $tag[0] = $this->lessc->mPrefix;
- }
- return $tags;
- }
-
- // a list of expressions
- protected function expressionList(&$exps) {
- $values = array();
-
- while ($this->expression($exp)) {
- $values[] = $exp;
- }
-
- if (count($values) == 0) return false;
-
- $exps = lessc::compressList($values, ' ');
- return true;
- }
-
- /**
- * Attempt to consume an expression.
- * @link http://en.wikipedia.org/wiki/Operator-precedence_parser#Pseudo-code
- */
- protected function expression(&$out) {
- if ($this->value($lhs)) {
- $out = $this->expHelper($lhs, 0);
-
- // look for / shorthand
- if (!empty($this->env->supressedDivision)) {
- unset($this->env->supressedDivision);
- $s = $this->seek();
- if ($this->literal("/") && $this->value($rhs)) {
- $out = array("list", "",
- array($out, array("keyword", "/"), $rhs));
- } else {
- $this->seek($s);
- }
- }
-
- return true;
- }
- return false;
- }
-
- /**
- * recursively parse infix equation with $lhs at precedence $minP
- */
- protected function expHelper($lhs, $minP) {
- $this->inExp = true;
- $ss = $this->seek();
-
- while (true) {
- $whiteBefore = isset($this->buffer[$this->count - 1]) &&
- ctype_space($this->buffer[$this->count - 1]);
-
- // If there is whitespace before the operator, then we require
- // whitespace after the operator for it to be an expression
- $needWhite = $whiteBefore && !$this->inParens;
-
- if ($this->match(self::$operatorString.($needWhite ? '\s' : ''), $m) && self::$precedence[$m[1]] >= $minP) {
- if (!$this->inParens && isset($this->env->currentProperty) && $m[1] == "/" && empty($this->env->supressedDivision)) {
- foreach (self::$supressDivisionProps as $pattern) {
- if (preg_match($pattern, $this->env->currentProperty)) {
- $this->env->supressedDivision = true;
- break 2;
- }
- }
- }
-
-
- $whiteAfter = isset($this->buffer[$this->count - 1]) &&
- ctype_space($this->buffer[$this->count - 1]);
-
- if (!$this->value($rhs)) break;
-
- // peek for next operator to see what to do with rhs
- if ($this->peek(self::$operatorString, $next) && self::$precedence[$next[1]] > self::$precedence[$m[1]]) {
- $rhs = $this->expHelper($rhs, self::$precedence[$next[1]]);
- }
-
- $lhs = array('expression', $m[1], $lhs, $rhs, $whiteBefore, $whiteAfter);
- $ss = $this->seek();
-
- continue;
- }
-
- break;
- }
-
- $this->seek($ss);
-
- return $lhs;
- }
-
- // consume a list of values for a property
- public function propertyValue(&$value, $keyName = null) {
- $values = array();
-
- if ($keyName !== null) $this->env->currentProperty = $keyName;
-
- $s = null;
- while ($this->expressionList($v)) {
- $values[] = $v;
- $s = $this->seek();
- if (!$this->literal(',')) break;
- }
-
- if ($s) $this->seek($s);
-
- if ($keyName !== null) unset($this->env->currentProperty);
-
- if (count($values) == 0) return false;
-
- $value = lessc::compressList($values, ', ');
- return true;
- }
-
- protected function parenValue(&$out) {
- $s = $this->seek();
-
- // speed shortcut
- if (isset($this->buffer[$this->count]) && $this->buffer[$this->count] != "(") {
- return false;
- }
-
- $inParens = $this->inParens;
- if ($this->literal("(") &&
- ($this->inParens = true) && $this->expression($exp) &&
- $this->literal(")"))
- {
- $out = $exp;
- $this->inParens = $inParens;
- return true;
- } else {
- $this->inParens = $inParens;
- $this->seek($s);
- }
-
- return false;
- }
-
- // a single value
- protected function value(&$value) {
- $s = $this->seek();
-
- // speed shortcut
- if (isset($this->buffer[$this->count]) && $this->buffer[$this->count] == "-") {
- // negation
- if ($this->literal("-", false) &&
- (($this->variable($inner) && $inner = array("variable", $inner)) ||
- $this->unit($inner) ||
- $this->parenValue($inner)))
- {
- $value = array("unary", "-", $inner);
- return true;
- } else {
- $this->seek($s);
- }
- }
-
- if ($this->parenValue($value)) return true;
- if ($this->unit($value)) return true;
- if ($this->color($value)) return true;
- if ($this->func($value)) return true;
- if ($this->string($value)) return true;
-
- if ($this->keyword($word)) {
- $value = array('keyword', $word);
- return true;
- }
-
- // try a variable
- if ($this->variable($var)) {
- $value = array('variable', $var);
- return true;
- }
-
- // unquote string (should this work on any type?
- if ($this->literal("~") && $this->string($str)) {
- $value = array("escape", $str);
- return true;
- } else {
- $this->seek($s);
- }
-
- // css hack: \0
- if ($this->literal('\\') && $this->match('([0-9]+)', $m)) {
- $value = array('keyword', '\\'.$m[1]);
- return true;
- } else {
- $this->seek($s);
- }
-
- return false;
- }
-
- // an import statement
- protected function import(&$out) {
- if (!$this->literal('@import')) return false;
-
- // @import "something.css" media;
- // @import url("something.css") media;
- // @import url(something.css) media;
-
- if ($this->propertyValue($value)) {
- $out = array("import", $value);
- return true;
- }
- }
-
- protected function mediaQueryList(&$out) {
- if ($this->genericList($list, "mediaQuery", ",", false)) {
- $out = $list[2];
- return true;
- }
- return false;
- }
-
- protected function mediaQuery(&$out) {
- $s = $this->seek();
-
- $expressions = null;
- $parts = array();
-
- if (($this->literal("only") && ($only = true) || $this->literal("not") && ($not = true) || true) && $this->keyword($mediaType)) {
- $prop = array("mediaType");
- if (isset($only)) $prop[] = "only";
- if (isset($not)) $prop[] = "not";
- $prop[] = $mediaType;
- $parts[] = $prop;
- } else {
- $this->seek($s);
- }
-
-
- if (!empty($mediaType) && !$this->literal("and")) {
- // ~
- } else {
- $this->genericList($expressions, "mediaExpression", "and", false);
- if (is_array($expressions)) $parts = array_merge($parts, $expressions[2]);
- }
-
- if (count($parts) == 0) {
- $this->seek($s);
- return false;
- }
-
- $out = $parts;
- return true;
- }
-
- protected function mediaExpression(&$out) {
- $s = $this->seek();
- $value = null;
- if ($this->literal("(") &&
- $this->keyword($feature) &&
- ($this->literal(":") && $this->expression($value) || true) &&
- $this->literal(")"))
- {
- $out = array("mediaExp", $feature);
- if ($value) $out[] = $value;
- return true;
- } elseif ($this->variable($variable)) {
- $out = array('variable', $variable);
- return true;
- }
-
- $this->seek($s);
- return false;
- }
-
- // an unbounded string stopped by $end
- protected function openString($end, &$out, $nestingOpen=null, $rejectStrs = null) {
- $oldWhite = $this->eatWhiteDefault;
- $this->eatWhiteDefault = false;
-
- $stop = array("'", '"', "@{", $end);
- $stop = array_map(array("lessc", "preg_quote"), $stop);
- // $stop[] = self::$commentMulti;
-
- if (!is_null($rejectStrs)) {
- $stop = array_merge($stop, $rejectStrs);
- }
-
- $patt = '(.*?)('.implode("|", $stop).')';
-
- $nestingLevel = 0;
-
- $content = array();
- while ($this->match($patt, $m, false)) {
- if (!empty($m[1])) {
- $content[] = $m[1];
- if ($nestingOpen) {
- $nestingLevel += substr_count($m[1], $nestingOpen);
- }
- }
-
- $tok = $m[2];
-
- $this->count-= strlen($tok);
- if ($tok == $end) {
- if ($nestingLevel == 0) {
- break;
- } else {
- $nestingLevel--;
- }
- }
-
- if (($tok == "'" || $tok == '"') && $this->string($str)) {
- $content[] = $str;
- continue;
- }
-
- if ($tok == "@{" && $this->interpolation($inter)) {
- $content[] = $inter;
- continue;
- }
-
- if (!empty($rejectStrs) && in_array($tok, $rejectStrs)) {
- break;
- }
-
- $content[] = $tok;
- $this->count+= strlen($tok);
- }
-
- $this->eatWhiteDefault = $oldWhite;
-
- if (count($content) == 0) return false;
-
- // trim the end
- if (is_string(end($content))) {
- $content[count($content) - 1] = rtrim(end($content));
- }
-
- $out = array("string", "", $content);
- return true;
- }
-
- protected function string(&$out) {
- $s = $this->seek();
- if ($this->literal('"', false)) {
- $delim = '"';
- } elseif ($this->literal("'", false)) {
- $delim = "'";
- } else {
- return false;
- }
-
- $content = array();
-
- // look for either ending delim , escape, or string interpolation
- $patt = '([^\n]*?)(@\{|\\\\|' .
- lessc::preg_quote($delim).')';
-
- $oldWhite = $this->eatWhiteDefault;
- $this->eatWhiteDefault = false;
-
- while ($this->match($patt, $m, false)) {
- $content[] = $m[1];
- if ($m[2] == "@{") {
- $this->count -= strlen($m[2]);
- if ($this->interpolation($inter, false)) {
- $content[] = $inter;
- } else {
- $this->count += strlen($m[2]);
- $content[] = "@{"; // ignore it
- }
- } elseif ($m[2] == '\\') {
- $content[] = $m[2];
- if ($this->literal($delim, false)) {
- $content[] = $delim;
- }
- } else {
- $this->count -= strlen($delim);
- break; // delim
- }
- }
-
- $this->eatWhiteDefault = $oldWhite;
-
- if ($this->literal($delim)) {
- $out = array("string", $delim, $content);
- return true;
- }
-
- $this->seek($s);
- return false;
- }
-
- protected function interpolation(&$out) {
- $oldWhite = $this->eatWhiteDefault;
- $this->eatWhiteDefault = true;
-
- $s = $this->seek();
- if ($this->literal("@{") &&
- $this->openString("}", $interp, null, array("'", '"', ";")) &&
- $this->literal("}", false))
- {
- $out = array("interpolate", $interp);
- $this->eatWhiteDefault = $oldWhite;
- if ($this->eatWhiteDefault) $this->whitespace();
- return true;
- }
-
- $this->eatWhiteDefault = $oldWhite;
- $this->seek($s);
- return false;
- }
-
- protected function unit(&$unit) {
- // speed shortcut
- if (isset($this->buffer[$this->count])) {
- $char = $this->buffer[$this->count];
- if (!ctype_digit($char) && $char != ".") return false;
- }
-
- if ($this->match('([0-9]+(?:\.[0-9]*)?|\.[0-9]+)([%a-zA-Z]+)?', $m)) {
- $unit = array("number", $m[1], empty($m[2]) ? "" : $m[2]);
- return true;
- }
- return false;
- }
-
- // a # color
- protected function color(&$out) {
- if ($this->match('(#(?:[0-9a-f]{8}|[0-9a-f]{6}|[0-9a-f]{3}))', $m)) {
- if (strlen($m[1]) > 7) {
- $out = array("string", "", array($m[1]));
- } else {
- $out = array("raw_color", $m[1]);
- }
- return true;
- }
-
- return false;
- }
-
- // consume an argument definition list surrounded by ()
- // each argument is a variable name with optional value
- // or at the end a ... or a variable named followed by ...
- // arguments are separated by , unless a ; is in the list, then ; is the
- // delimiter.
- protected function argumentDef(&$args, &$isVararg) {
- $s = $this->seek();
- if (!$this->literal('(')) return false;
-
- $values = array();
- $delim = ",";
- $method = "expressionList";
-
- $isVararg = false;
- while (true) {
- if ($this->literal("...")) {
- $isVararg = true;
- break;
- }
-
- if ($this->$method($value)) {
- if ($value[0] == "variable") {
- $arg = array("arg", $value[1]);
- $ss = $this->seek();
-
- if ($this->assign() && $this->$method($rhs)) {
- $arg[] = $rhs;
- } else {
- $this->seek($ss);
- if ($this->literal("...")) {
- $arg[0] = "rest";
- $isVararg = true;
- }
- }
-
- $values[] = $arg;
- if ($isVararg) break;
- continue;
- } else {
- $values[] = array("lit", $value);
- }
- }
-
-
- if (!$this->literal($delim)) {
- if ($delim == "," && $this->literal(";")) {
- // found new delim, convert existing args
- $delim = ";";
- $method = "propertyValue";
-
- // transform arg list
- if (isset($values[1])) { // 2 items
- $newList = array();
- foreach ($values as $i => $arg) {
- switch($arg[0]) {
- case "arg":
- if ($i) {
- $this->throwError("Cannot mix ; and , as delimiter types");
- }
- $newList[] = $arg[2];
- break;
- case "lit":
- $newList[] = $arg[1];
- break;
- case "rest":
- $this->throwError("Unexpected rest before semicolon");
- }
- }
-
- $newList = array("list", ", ", $newList);
-
- switch ($values[0][0]) {
- case "arg":
- $newArg = array("arg", $values[0][1], $newList);
- break;
- case "lit":
- $newArg = array("lit", $newList);
- break;
- }
-
- } elseif ($values) { // 1 item
- $newArg = $values[0];
- }
-
- if ($newArg) {
- $values = array($newArg);
- }
- } else {
- break;
- }
- }
- }
-
- if (!$this->literal(')')) {
- $this->seek($s);
- return false;
- }
-
- $args = $values;
-
- return true;
- }
-
- // consume a list of tags
- // this accepts a hanging delimiter
- protected function tags(&$tags, $simple = false, $delim = ',') {
- $tags = array();
- while ($this->tag($tt, $simple)) {
- $tags[] = $tt;
- if (!$this->literal($delim)) break;
- }
- if (count($tags) == 0) return false;
-
- return true;
- }
-
- // list of tags of specifying mixin path
- // optionally separated by > (lazy, accepts extra >)
- protected function mixinTags(&$tags) {
- $tags = array();
- while ($this->tag($tt, true)) {
- $tags[] = $tt;
- $this->literal(">");
- }
-
- if (count($tags) == 0) return false;
-
- return true;
- }
-
- // a bracketed value (contained within in a tag definition)
- protected function tagBracket(&$parts, &$hasExpression) {
- // speed shortcut
- if (isset($this->buffer[$this->count]) && $this->buffer[$this->count] != "[") {
- return false;
- }
-
- $s = $this->seek();
-
- $hasInterpolation = false;
-
- if ($this->literal("[", false)) {
- $attrParts = array("[");
- // keyword, string, operator
- while (true) {
- if ($this->literal("]", false)) {
- $this->count--;
- break; // get out early
- }
-
- if ($this->match('\s+', $m)) {
- $attrParts[] = " ";
- continue;
- }
- if ($this->string($str)) {
- // escape parent selector, (yuck)
- foreach ($str[2] as &$chunk) {
- $chunk = str_replace($this->lessc->parentSelector, "$&$", $chunk);
- }
-
- $attrParts[] = $str;
- $hasInterpolation = true;
- continue;
- }
-
- if ($this->keyword($word)) {
- $attrParts[] = $word;
- continue;
- }
-
- if ($this->interpolation($inter, false)) {
- $attrParts[] = $inter;
- $hasInterpolation = true;
- continue;
- }
-
- // operator, handles attr namespace too
- if ($this->match('[|-~\$\*\^=]+', $m)) {
- $attrParts[] = $m[0];
- continue;
- }
-
- break;
- }
-
- if ($this->literal("]", false)) {
- $attrParts[] = "]";
- foreach ($attrParts as $part) {
- $parts[] = $part;
- }
- $hasExpression = $hasExpression || $hasInterpolation;
- return true;
- }
- $this->seek($s);
- }
-
- $this->seek($s);
- return false;
- }
-
- // a space separated list of selectors
- protected function tag(&$tag, $simple = false) {
- if ($simple)
- $chars = '^@,:;{}\][>\(\) "\'';
- else
- $chars = '^@,;{}["\'';
-
- $s = $this->seek();
-
- $hasExpression = false;
- $parts = array();
- while ($this->tagBracket($parts, $hasExpression));
-
- $oldWhite = $this->eatWhiteDefault;
- $this->eatWhiteDefault = false;
-
- while (true) {
- if ($this->match('(['.$chars.'0-9]['.$chars.']*)', $m)) {
- $parts[] = $m[1];
- if ($simple) break;
-
- while ($this->tagBracket($parts, $hasExpression));
- continue;
- }
-
- if (isset($this->buffer[$this->count]) && $this->buffer[$this->count] == "@") {
- if ($this->interpolation($interp)) {
- $hasExpression = true;
- $interp[2] = true; // don't unescape
- $parts[] = $interp;
- continue;
- }
-
- if ($this->literal("@")) {
- $parts[] = "@";
- continue;
- }
- }
-
- if ($this->unit($unit)) { // for keyframes
- $parts[] = $unit[1];
- $parts[] = $unit[2];
- continue;
- }
-
- break;
- }
-
- $this->eatWhiteDefault = $oldWhite;
- if (!$parts) {
- $this->seek($s);
- return false;
- }
-
- if ($hasExpression) {
- $tag = array("exp", array("string", "", $parts));
- } else {
- $tag = trim(implode($parts));
- }
-
- $this->whitespace();
- return true;
- }
-
- // a css function
- protected function func(&$func) {
- $s = $this->seek();
-
- if ($this->match('(%|[\w\-_][\w\-_:\.]+|[\w_])', $m) && $this->literal('(')) {
- $fname = $m[1];
-
- $sPreArgs = $this->seek();
-
- $args = array();
- while (true) {
- $ss = $this->seek();
- // this ugly nonsense is for ie filter properties
- if ($this->keyword($name) && $this->literal('=') && $this->expressionList($value)) {
- $args[] = array("string", "", array($name, "=", $value));
- } else {
- $this->seek($ss);
- if ($this->expressionList($value)) {
- $args[] = $value;
- }
- }
-
- if (!$this->literal(',')) break;
- }
- $args = array('list', ',', $args);
-
- if ($this->literal(')')) {
- $func = array('function', $fname, $args);
- return true;
- } elseif ($fname == 'url') {
- // couldn't parse and in url? treat as string
- $this->seek($sPreArgs);
- if ($this->openString(")", $string) && $this->literal(")")) {
- $func = array('function', $fname, $string);
- return true;
- }
- }
- }
-
- $this->seek($s);
- return false;
- }
-
- // consume a less variable
- protected function variable(&$name) {
- $s = $this->seek();
- if ($this->literal($this->lessc->vPrefix, false) &&
- ($this->variable($sub) || $this->keyword($name)))
- {
- if (!empty($sub)) {
- $name = array('variable', $sub);
- } else {
- $name = $this->lessc->vPrefix.$name;
- }
- return true;
- }
-
- $name = null;
- $this->seek($s);
- return false;
- }
-
- /**
- * Consume an assignment operator
- * Can optionally take a name that will be set to the current property name
- */
- protected function assign($name = null) {
- if ($name) $this->currentProperty = $name;
- return $this->literal(':') || $this->literal('=');
- }
-
- // consume a keyword
- protected function keyword(&$word) {
- if ($this->match('([\w_\-\*!"][\w\-_"]*)', $m)) {
- $word = $m[1];
- return true;
- }
- return false;
- }
-
- // consume an end of statement delimiter
- protected function end() {
- if ($this->literal(';', false)) {
- return true;
- } elseif ($this->count == strlen($this->buffer) || $this->buffer[$this->count] == '}') {
- // if there is end of file or a closing block next then we don't need a ;
- return true;
- }
- return false;
- }
-
- protected function guards(&$guards) {
- $s = $this->seek();
-
- if (!$this->literal("when")) {
- $this->seek($s);
- return false;
- }
-
- $guards = array();
-
- while ($this->guardGroup($g)) {
- $guards[] = $g;
- if (!$this->literal(",")) break;
- }
-
- if (count($guards) == 0) {
- $guards = null;
- $this->seek($s);
- return false;
- }
-
- return true;
- }
-
- // a bunch of guards that are and'd together
- // TODO rename to guardGroup
- protected function guardGroup(&$guardGroup) {
- $s = $this->seek();
- $guardGroup = array();
- while ($this->guard($guard)) {
- $guardGroup[] = $guard;
- if (!$this->literal("and")) break;
- }
-
- if (count($guardGroup) == 0) {
- $guardGroup = null;
- $this->seek($s);
- return false;
- }
-
- return true;
- }
-
- protected function guard(&$guard) {
- $s = $this->seek();
- $negate = $this->literal("not");
-
- if ($this->literal("(") && $this->expression($exp) && $this->literal(")")) {
- $guard = $exp;
- if ($negate) $guard = array("negate", $guard);
- return true;
- }
-
- $this->seek($s);
- return false;
- }
-
- /* raw parsing functions */
-
- protected function literal($what, $eatWhitespace = null) {
- if ($eatWhitespace === null) $eatWhitespace = $this->eatWhiteDefault;
-
- // shortcut on single letter
- if (!isset($what[1]) && isset($this->buffer[$this->count])) {
- if ($this->buffer[$this->count] == $what) {
- if (!$eatWhitespace) {
- $this->count++;
- return true;
- }
- // goes below...
- } else {
- return false;
- }
- }
-
- if (!isset(self::$literalCache[$what])) {
- self::$literalCache[$what] = lessc::preg_quote($what);
- }
-
- return $this->match(self::$literalCache[$what], $m, $eatWhitespace);
- }
-
- protected function genericList(&$out, $parseItem, $delim="", $flatten=true) {
- $s = $this->seek();
- $items = array();
- while ($this->$parseItem($value)) {
- $items[] = $value;
- if ($delim) {
- if (!$this->literal($delim)) break;
- }
- }
-
- if (count($items) == 0) {
- $this->seek($s);
- return false;
- }
-
- if ($flatten && count($items) == 1) {
- $out = $items[0];
- } else {
- $out = array("list", $delim, $items);
- }
-
- return true;
- }
-
-
- // advance counter to next occurrence of $what
- // $until - don't include $what in advance
- // $allowNewline, if string, will be used as valid char set
- protected function to($what, &$out, $until = false, $allowNewline = false) {
- if (is_string($allowNewline)) {
- $validChars = $allowNewline;
- } else {
- $validChars = $allowNewline ? "." : "[^\n]";
- }
- if (!$this->match('('.$validChars.'*?)'.lessc::preg_quote($what), $m, !$until)) return false;
- if ($until) $this->count -= strlen($what); // give back $what
- $out = $m[1];
- return true;
- }
-
- // try to match something on head of buffer
- protected function match($regex, &$out, $eatWhitespace = null) {
- if ($eatWhitespace === null) $eatWhitespace = $this->eatWhiteDefault;
-
- $r = '/'.$regex.($eatWhitespace && !$this->writeComments ? '\s*' : '').'/Ais';
- if (preg_match($r, $this->buffer, $out, null, $this->count)) {
- $this->count += strlen($out[0]);
- if ($eatWhitespace && $this->writeComments) $this->whitespace();
- return true;
- }
- return false;
- }
-
- // match some whitespace
- protected function whitespace() {
- if ($this->writeComments) {
- $gotWhite = false;
- while (preg_match(self::$whitePattern, $this->buffer, $m, null, $this->count)) {
- if (isset($m[1]) && empty($this->seenComments[$this->count])) {
- $this->append(array("comment", $m[1]));
- $this->seenComments[$this->count] = true;
- }
- $this->count += strlen($m[0]);
- $gotWhite = true;
- }
- return $gotWhite;
- } else {
- $this->match("", $m);
- return strlen($m[0]) > 0;
- }
- }
-
- // match something without consuming it
- protected function peek($regex, &$out = null, $from=null) {
- if (is_null($from)) $from = $this->count;
- $r = '/'.$regex.'/Ais';
- $result = preg_match($r, $this->buffer, $out, null, $from);
-
- return $result;
- }
-
- // seek to a spot in the buffer or return where we are on no argument
- protected function seek($where = null) {
- if ($where === null) return $this->count;
- else $this->count = $where;
- return true;
- }
-
- /* misc functions */
-
- public function throwError($msg = "parse error", $count = null) {
- $count = is_null($count) ? $this->count : $count;
-
- $line = $this->line +
- substr_count(substr($this->buffer, 0, $count), "\n");
-
- if (!empty($this->sourceName)) {
- $loc = "$this->sourceName on line $line";
- } else {
- $loc = "line: $line";
- }
-
- // TODO this depends on $this->count
- if ($this->peek("(.*?)(\n|$)", $m, $count)) {
- throw new exception("$msg: failed at `$m[1]` $loc");
- } else {
- throw new exception("$msg: $loc");
- }
- }
-
- protected function pushBlock($selectors=null, $type=null) {
- $b = new stdclass;
- $b->parent = $this->env;
-
- $b->type = $type;
- $b->id = self::$nextBlockId++;
-
- $b->isVararg = false; // TODO: kill me from here
- $b->tags = $selectors;
-
- $b->props = array();
- $b->children = array();
-
- $this->env = $b;
- return $b;
- }
-
- // push a block that doesn't multiply tags
- protected function pushSpecialBlock($type) {
- return $this->pushBlock(null, $type);
- }
-
- // append a property to the current block
- protected function append($prop, $pos = null) {
- if ($pos !== null) $prop[-1] = $pos;
- $this->env->props[] = $prop;
- }
-
- // pop something off the stack
- protected function pop() {
- $old = $this->env;
- $this->env = $this->env->parent;
- return $old;
- }
-
- // remove comments from $text
- // todo: make it work for all functions, not just url
- protected function removeComments($text) {
- $look = array(
- 'url(', '//', '/*', '"', "'"
- );
-
- $out = '';
- $min = null;
- while (true) {
- // find the next item
- foreach ($look as $token) {
- $pos = strpos($text, $token);
- if ($pos !== false) {
- if (!isset($min) || $pos < $min[1]) $min = array($token, $pos);
- }
- }
-
- if (is_null($min)) break;
-
- $count = $min[1];
- $skip = 0;
- $newlines = 0;
- switch ($min[0]) {
- case 'url(':
- if (preg_match('/url\(.*?\)/', $text, $m, 0, $count))
- $count += strlen($m[0]) - strlen($min[0]);
- break;
- case '"':
- case "'":
- if (preg_match('/'.$min[0].'.*?(?<!\\\\)'.$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;
- }
-
-}
-
-class lessc_formatter_classic {
- public $indentChar = " ";
-
- public $break = "\n";
- public $open = " {";
- public $close = "}";
- public $selectorSeparator = ", ";
- public $assignSeparator = ":";
-
- public $openSingle = " { ";
- public $closeSingle = " }";
-
- public $disableSingle = false;
- public $breakSelectors = false;
-
- public $compressColors = false;
-
- public function __construct() {
- $this->indentLevel = 0;
- }
-
- public function indentStr($n = 0) {
- return str_repeat($this->indentChar, max($this->indentLevel + $n, 0));
- }
-
- public function property($name, $value) {
- return $name . $this->assignSeparator . $value . ";";
- }
-
- protected function isEmpty($block) {
- if (empty($block->lines)) {
- foreach ($block->children as $child) {
- if (!$this->isEmpty($child)) return false;
- }
-
- return true;
- }
- return false;
- }
-
- public function block($block) {
- if ($this->isEmpty($block)) return;
-
- $inner = $pre = $this->indentStr();
-
- $isSingle = !$this->disableSingle &&
- is_null($block->type) && count($block->lines) == 1;
-
- if (!empty($block->selectors)) {
- $this->indentLevel++;
-
- if ($this->breakSelectors) {
- $selectorSeparator = $this->selectorSeparator . $this->break . $pre;
- } else {
- $selectorSeparator = $this->selectorSeparator;
- }
-
- echo $pre .
- implode($selectorSeparator, $block->selectors);
- if ($isSingle) {
- echo $this->openSingle;
- $inner = "";
- } else {
- echo $this->open . $this->break;
- $inner = $this->indentStr();
- }
-
- }
-
- if (!empty($block->lines)) {
- $glue = $this->break.$inner;
- echo $inner . implode($glue, $block->lines);
- if (!$isSingle && !empty($block->children)) {
- echo $this->break;
- }
- }
-
- foreach ($block->children as $child) {
- $this->block($child);
- }
-
- if (!empty($block->selectors)) {
- if (!$isSingle && empty($block->children)) echo $this->break;
-
- if ($isSingle) {
- echo $this->closeSingle . $this->break;
- } else {
- echo $pre . $this->close . $this->break;
- }
-
- $this->indentLevel--;
- }
- }
-}
-
-class lessc_formatter_compressed extends lessc_formatter_classic {
- public $disableSingle = true;
- public $open = "{";
- public $selectorSeparator = ",";
- public $assignSeparator = ":";
- public $break = "";
- public $compressColors = true;
-
- public function indentStr($n = 0) {
- return "";
- }
-}
-
-class lessc_formatter_lessjs extends lessc_formatter_classic {
- public $disableSingle = true;
- public $breakSelectors = true;
- public $assignSeparator = ": ";
- public $selectorSeparator = ",";
-}
-
-
dépôts / lhc / web / wiklou.git / commitdiff
