/scss.inc.php
PHP | 3939 lines | 3249 code | 578 blank | 112 comment | 678 complexity | affc4761530788ad048619a8b7985467 MD5 | raw file
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- <?php
- class scssc {
- static public $VERSION = "v0.0.4";
- static protected $operatorNames = array(
- '+' => "add",
- '-' => "sub",
- '*' => "mul",
- '/' => "div",
- '%' => "mod",
- '==' => "eq",
- '!=' => "neq",
- '<' => "lt",
- '>' => "gt",
- '<=' => "lte",
- '>=' => "gte",
- );
- static protected $namespaces = array(
- "special" => "%",
- "mixin" => "@",
- "function" => "^",
- );
- static protected $numberPrecision = 3;
- static protected $unitTable = array(
- "in" => array(
- "in" => 1,
- "pt" => 72,
- "pc" => 6,
- "cm" => 2.54,
- "mm" => 25.4,
- "px" => 96,
- )
- );
- static public $true = array("keyword", "true");
- static public $false = array("keyword", "false");
- static public $defaultValue = array("keyword", "");
- static public $selfSelector = array("self");
- protected $importPaths = array("");
- protected $importCache = array();
- protected $userFunctions = array();
- protected $formatter = "scss_formatter_nested";
- function compile($code, $name=null) {
- $this->indentLevel = -1;
- $this->commentsSeen = array();
- $this->extends = array();
- $this->extendsMap = array();
- $locale = setlocale(LC_NUMERIC, 0);
- setlocale(LC_NUMERIC, "C");
- $this->parsedFiles = array();
- $this->parser = new scss_parser($name);
- $tree = $this->parser->parse($code);
- $this->formatter = new $this->formatter();
- $this->env = null;
- $this->scope = null;
- $this->compileRoot($tree);
- $this->flattenSelectors($this->scope);
- ob_start();
- $this->formatter->block($this->scope);
- $out = ob_get_clean();
- setlocale(LC_NUMERIC, $locale);
- return $out;
- }
- protected function pushExtends($target, $origin) {
- $i = count($this->extends);
- $this->extends[] = array($target, $origin);
- foreach ($target as $part) {
- if (isset($this->extendsMap[$part])) {
- $this->extendsMap[$part][] = $i;
- } else {
- $this->extendsMap[$part] = array($i);
- }
- }
- }
- protected function makeOutputBlock($type, $selectors = null) {
- $out = new stdClass;
- $out->type = $type;
- $out->lines = array();
- $out->children = array();
- $out->parent = $this->scope;
- $out->selectors = $selectors;
- $out->depth = $this->env->depth;
- return $out;
- }
- protected function matchExtendsSingle($single, &$out_origin, &$out_rem) {
- $counts = array();
- foreach ($single as $part) {
- if (!is_string($part)) return false; // hmm
- if (isset($this->extendsMap[$part])) {
- foreach ($this->extendsMap[$part] as $idx) {
- $counts[$idx] =
- isset($counts[$idx]) ? $counts[$idx] + 1 : 1;
- }
- }
- }
- foreach ($counts as $idx => $count) {
- list($target, $origin) = $this->extends[$idx];
- // check count
- if ($count != count($target)) continue;
- // check if target is subset of single
- if (array_diff(array_intersect($single, $target), $target)) continue;
- $out_origin = $origin;
- $out_rem = array_diff($single, $target);
- return true;
- }
- return false;
- }
- protected function combineSelectorSingle($base, $other) {
- $tag = null;
- $out = array();
- foreach (array($base, $other) as $single) {
- foreach ($single as $part) {
- if (preg_match('/^[^.#:]/', $part)) {
- $tag = $part;
- } else {
- $out[] = $part;
- }
- }
- }
- if ($tag) {
- array_unshift($out, $tag);
- }
- return $out;
- }
- protected function matchExtends($selector, &$out, $from = 0, $initial=true) {
- foreach ($selector as $i => $part) {
- if ($i < $from) continue;
- if ($this->matchExtendsSingle($part, $origin, $rem)) {
- $before = array_slice($selector, 0, $i);
- $after = array_slice($selector, $i + 1);
- foreach ($origin as $new) {
- $new[count($new) - 1] =
- $this->combineSelectorSingle(end($new), $rem);
- $k = 0;
- // remove shared parts
- if ($initial) {
- foreach ($before as $k => $val) {
- if (!isset($new[$k]) || $val != $new[$k]) {
- break;
- }
- }
- }
- $result = array_merge(
- $before,
- $k > 0 ? array_slice($new, $k) : $new,
- $after);
- if ($result == $selector) continue;
- $out[] = $result;
- // recursively check for more matches
- $this->matchExtends($result, $out, $i, false);
- // selector sequence merging
- if (!empty($before) && count($new) > 1) {
- $result2 = array_merge(
- array_slice($new, 0, -1),
- $k > 0 ? array_slice($before, $k) : $before,
- array_slice($new, -1),
- $after);
- $out[] = $result2;
- }
- }
- }
- }
- }
- protected function flattenSelectors($block, $parentKey = null) {
- if ($block->selectors) {
- $selectors = array();
- foreach ($block->selectors as $s) {
- $selectors[] = $s;
- if (!is_array($s)) continue;
- // check extends
- if (!empty($this->extendsMap)) {
- $this->matchExtends($s, $selectors);
- }
- }
- $block->selectors = array();
- $placeholderSelector = false;
- foreach ($selectors as $selector) {
- if ($this->hasSelectorPlaceholder($selector)) {
- $placeholderSelector = true;
- continue;
- }
- $block->selectors[] = $this->compileSelector($selector);
- }
- if ($placeholderSelector && 0 == count($block->selectors) && null !== $parentKey) {
- unset($block->parent->children[$parentKey]);
- return;
- }
- }
- foreach ($block->children as $key => $child) {
- $this->flattenSelectors($child, $key);
- }
- }
- protected function compileRoot($rootBlock) {
- $this->pushEnv($rootBlock);
- $this->scope = $this->makeOutputBlock("root");
- $this->compileChildren($rootBlock->children, $this->scope);
- $this->popEnv();
- }
- protected function compileMedia($media) {
- $this->pushEnv($media);
- $parentScope = $this->mediaParent($this->scope);
- $this->scope = $this->makeOutputBlock("media", array(
- $this->compileMediaQuery($this->multiplyMedia($this->env)))
- );
- $parentScope->children[] = $this->scope;
- $this->compileChildren($media->children, $this->scope);
- $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 $scope;
- }
- // TODO refactor compileNestedBlock and compileMedia into same thing
- protected function compileNestedBlock($block, $selectors) {
- $this->pushEnv($block);
- $this->scope = $this->makeOutputBlock($block->type, $selectors);
- $this->scope->parent->children[] = $this->scope;
- $this->compileChildren($block->children, $this->scope);
- $this->scope = $this->scope->parent;
- $this->popEnv();
- }
- protected function compileBlock($block) {
- $env = $this->pushEnv($block);
- $env->selectors =
- array_map(array($this, "evalSelector"), $block->selectors);
- $out = $this->makeOutputBlock(null, $this->multiplySelectors($env));
- $this->scope->children[] = $out;
- $this->compileChildren($block->children, $out);
- $this->popEnv();
- }
- // joins together .classes and #ids
- protected function flattenSelectorSingle($single) {
- $joined = array();
- foreach ($single as $part) {
- if (empty($joined) ||
- !is_string($part) ||
- preg_match('/[.:#%]/', $part))
- {
- $joined[] = $part;
- continue;
- }
- if (is_array(end($joined))) {
- $joined[] = $part;
- } else {
- $joined[count($joined) - 1] .= $part;
- }
- }
- return $joined;
- }
- // replaces all the interpolates
- protected function evalSelector($selector) {
- return array_map(array($this, "evalSelectorPart"), $selector);
- }
- protected function evalSelectorPart($piece) {
- foreach ($piece as &$p) {
- if (!is_array($p)) continue;
- switch ($p[0]) {
- case "interpolate":
- $p = $this->compileValue($p);
- break;
- }
- }
- return $this->flattenSelectorSingle($piece);
- }
- // compiles to string
- // self(&) should have been replaced by now
- protected function compileSelector($selector) {
- if (!is_array($selector)) return $selector; // media and the like
- return implode(" ", array_map(
- array($this, "compileSelectorPart"), $selector));
- }
- protected function compileSelectorPart($piece) {
- foreach ($piece as &$p) {
- if (!is_array($p)) continue;
- switch ($p[0]) {
- case "self":
- $p = "&";
- break;
- default:
- $p = $this->compileValue($p);
- break;
- }
- }
- return implode($piece);
- }
- protected function hasSelectorPlaceholder($selector)
- {
- if (!is_array($selector)) return false;
- foreach ($selector as $parts) {
- foreach ($parts as $part) {
- if ('%' == $part[0]) {
- return true;
- }
- }
- }
- return false;
- }
- protected function compileChildren($stms, $out) {
- foreach ($stms as $stm) {
- $ret = $this->compileChild($stm, $out);
- if (!is_null($ret)) return $ret;
- }
- }
- protected function compileMediaQuery($queryList) {
- $out = "@media";
- $first = true;
- foreach ($queryList as $query){
- $parts = array();
- foreach ($query as $q) {
- switch ($q[0]) {
- case "mediaType":
- $parts[] = implode(" ", array_map(array($this, "compileValue"), array_slice($q, 1)));
- break;
- case "mediaExp":
- if (isset($q[2])) {
- $parts[] = "(". $this->compileValue($q[1]) . $this->formatter->assignSeparator . $this->compileValue($q[2]) . ")";
- } else {
- $parts[] = "(" . $this->compileValue($q[1]) . ")";
- }
- break;
- }
- }
- if (!empty($parts)) {
- if ($first) {
- $first = false;
- $out .= " ";
- } else {
- $out .= $this->formatter->tagSeparator;
- }
- $out .= implode(" and ", $parts);
- }
- }
- return $out;
- }
- // returns true if the value was something that could be imported
- protected function compileImport($rawPath, $out) {
- if ($rawPath[0] == "string") {
- $path = $this->compileStringContent($rawPath);
- if ($path = $this->findImport($path)) {
- $this->importFile($path, $out);
- return true;
- }
- return false;
- } if ($rawPath[0] == "list") {
- // handle a list of strings
- if (count($rawPath[2]) == 0) return false;
- foreach ($rawPath[2] as $path) {
- if ($path[0] != "string") return false;
- }
- foreach ($rawPath[2] as $path) {
- $this->compileImport($path, $out);
- }
- return true;
- }
- return false;
- }
- // return a value to halt execution
- protected function compileChild($child, $out) {
- switch ($child[0]) {
- case "import":
- list(,$rawPath) = $child;
- $rawPath = $this->reduce($rawPath);
- if (!$this->compileImport($rawPath, $out)) {
- $out->lines[] = "@import " . $this->compileValue($rawPath) . ";";
- }
- break;
- case "directive":
- list(, $directive) = $child;
- $s = "@" . $directive->name;
- if (!empty($directive->value)) {
- $s .= " " . $this->compileValue($directive->value);
- }
- $this->compileNestedBlock($directive, array($s));
- break;
- case "media":
- $this->compileMedia($child[1]);
- break;
- case "block":
- $this->compileBlock($child[1]);
- break;
- case "charset":
- $out->lines[] = "@charset ".$this->compileValue($child[1]).";";
- break;
- case "assign":
- list(,$name, $value) = $child;
- if ($name[0] == "var") {
- $isDefault = !empty($child[3]);
- if (!$isDefault || $this->get($name[1], true) === true) {
- $this->set($name[1], $this->reduce($value));
- }
- break;
- }
- $out->lines[] = $this->formatter->property(
- $this->compileValue($child[1]),
- $this->compileValue($child[2]));
- break;
- case "comment":
- $out->lines[] = $child[1];
- break;
- case "mixin":
- case "function":
- list(,$block) = $child;
- $this->set(self::$namespaces[$block->type] . $block->name, $block);
- break;
- case "extend":
- list(, $selectors) = $child;
- foreach ($selectors as $sel) {
- // only use the first one
- $sel = current($this->evalSelector($sel));
- $this->pushExtends($sel, $out->selectors);
- }
- break;
- case "if":
- list(, $if) = $child;
- if ($this->reduce($if->cond, true) != self::$false) {
- return $this->compileChildren($if->children, $out);
- } else {
- foreach ($if->cases as $case) {
- if ($case->type == "else" ||
- $case->type == "elseif" && ($this->reduce($case->cond) != self::$false))
- {
- return $this->compileChildren($case->children, $out);
- }
- }
- }
- break;
- case "return":
- return $this->reduce($child[1], true);
- case "each":
- list(,$each) = $child;
- $list = $this->coerceList($this->reduce($each->list));
- foreach ($list[2] as $item) {
- $this->pushEnv();
- $this->set($each->var, $item);
- // TODO: allow return from here
- $this->compileChildren($each->children, $out);
- $this->popEnv();
- }
- break;
- case "while":
- list(,$while) = $child;
- while ($this->reduce($while->cond, true) != self::$false) {
- $ret = $this->compileChildren($while->children, $out);
- if ($ret) return $ret;
- }
- break;
- case "for":
- list(,$for) = $child;
- $start = $this->reduce($for->start, true);
- $start = $start[1];
- $end = $this->reduce($for->end, true);
- $end = $end[1];
- $d = $start < $end ? 1 : -1;
- while (true) {
- if ((!$for->until && $start - $d == $end) ||
- ($for->until && $start == $end))
- {
- break;
- }
- $this->set($for->var, array("number", $start, ""));
- $start += $d;
- $ret = $this->compileChildren($for->children, $out);
- if ($ret) return $ret;
- }
- break;
- case "nestedprop":
- list(,$prop) = $child;
- $prefixed = array();
- $prefix = $this->compileValue($prop->prefix) . "-";
- foreach ($prop->children as $child) {
- if ($child[0] == "assign") {
- array_unshift($child[1][2], $prefix);
- }
- if ($child[0] == "nestedprop") {
- array_unshift($child[1]->prefix[2], $prefix);
- }
- $prefixed[] = $child;
- }
- $this->compileChildren($prefixed, $out);
- break;
- case "include": // including a mixin
- list(,$name, $argValues, $content) = $child;
- $mixin = $this->get(self::$namespaces["mixin"] . $name, false);
- if (!$mixin) {
- throw new Exception(sprintf('Undefined mixin "%s"', $name));
- }
- $callingScope = $this->env;
- // push scope, apply args
- $this->pushEnv();
- if ($this->env->depth > 0) {
- $this->env->depth--;
- }
- if (!is_null($content)) {
- $content->scope = $callingScope;
- $this->setRaw(self::$namespaces["special"] . "content", $content);
- }
- if (!is_null($mixin->args)) {
- $this->applyArguments($mixin->args, $argValues);
- }
- foreach ($mixin->children as $child) {
- $this->compileChild($child, $out);
- }
- $this->popEnv();
- break;
- case "mixin_content":
- $content = $this->get(self::$namespaces["special"] . "content");
- if (is_null($content)) {
- throw new Exception("Unexpected @content inside of mixin");
- }
- $this->storeEnv = $content->scope;
- foreach ($content->children as $child) {
- $this->compileChild($child, $out);
- }
- unset($this->storeEnv);
- break;
- case "debug":
- list(,$value, $pos) = $child;
- $line = $this->parser->getLineNo($pos);
- $value = $this->compileValue($this->reduce($value, true));
- fwrite(STDERR, "Line $line DEBUG: $value\n");
- break;
- default:
- throw new Exception("unknown child type: $child[0]");
- }
- }
- protected function expToString($exp) {
- list(, $op, $left, $right, $inParens, $whiteLeft, $whiteRight) = $exp;
- $content = array($left);
- if ($whiteLeft) $content[] = " ";
- $content[] = $op;
- if ($whiteRight) $content[] = " ";
- $content[] = $right;
- return array("string", "", $content);
- }
- // should $value cause its operand to eval
- protected function shouldEval($value) {
- switch ($value[0]) {
- case "exp":
- if ($value[1] == "/") {
- return $this->shouldEval($value[2], $value[3]);
- }
- case "var":
- case "fncall":
- return true;
- }
- return false;
- }
- protected function reduce($value, $inExp = false) {
- list($type) = $value;
- switch ($type) {
- case "exp":
- list(, $op, $left, $right, $inParens) = $value;
- $opName = isset(self::$operatorNames[$op]) ? self::$operatorNames[$op] : $op;
- $inExp = $inExp || $this->shouldEval($left) || $this->shouldEval($right);
- $left = $this->reduce($left, true);
- $right = $this->reduce($right, true);
- // only do division in special cases
- if ($opName == "div" && !$inParens && !$inExp) {
- if ($left[0] != "color" && $right[0] != "color") {
- return $this->expToString($value);
- }
- }
- $left = $this->coerceForExpression($left);
- $right = $this->coerceForExpression($right);
- $ltype = $left[0];
- $rtype = $right[0];
- // this tries:
- // 1. op_[op name]_[left type]_[right type]
- // 2. op_[left type]_[right type] (passing the op as first arg
- // 3. op_[op name]
- $fn = "op_${opName}_${ltype}_${rtype}";
- if (is_callable(array($this, $fn)) ||
- (($fn = "op_${ltype}_${rtype}") &&
- is_callable(array($this, $fn)) &&
- $passOp = true) ||
- (($fn = "op_${opName}") &&
- is_callable(array($this, $fn)) &&
- $genOp = true))
- {
- $unitChange = false;
- if (!isset($genOp) &&
- $left[0] == "number" && $right[0] == "number")
- {
- if ($opName == "mod" && $right[2] != "") {
- throw new Exception(sprintf('Cannot modulo by a number with units: %s%s.', $right[1], $right[2]));
- }
- $unitChange = true;
- $emptyUnit = $left[2] == "" || $right[2] == "";
- $targetUnit = "" != $left[2] ? $left[2] : $right[2];
- if ($opName != "mul") {
- $left[2] = "" != $left[2] ? $left[2] : $targetUnit;
- $right[2] = "" != $right[2] ? $right[2] : $targetUnit;
- }
- if ($opName != "mod") {
- $left = $this->normalizeNumber($left);
- $right = $this->normalizeNumber($right);
- }
- if ($opName == "div" && !$emptyUnit && $left[2] == $right[2]) {
- $targetUnit = "";
- }
- if ($opName == "mul") {
- $left[2] = "" != $left[2] ? $left[2] : $right[2];
- $right[2] = "" != $right[2] ? $right[2] : $left[2];
- } elseif ($opName == "div" && $left[2] == $right[2]) {
- $left[2] = "";
- $right[2] = "";
- }
- }
- $shouldEval = $inParens || $inExp;
- if (isset($passOp)) {
- $out = $this->$fn($op, $left, $right, $shouldEval);
- } else {
- $out = $this->$fn($left, $right, $shouldEval);
- }
- if (!is_null($out)) {
- if ($unitChange && $out[0] == "number") {
- $out = $this->coerceUnit($out, $targetUnit);
- }
- return $out;
- }
- }
- return $this->expToString($value);
- case "unary":
- list(, $op, $exp, $inParens) = $value;
- $inExp = $inExp || $this->shouldEval($exp);
- $exp = $this->reduce($exp);
- if ($exp[0] == "number") {
- switch ($op) {
- case "+":
- return $exp;
- case "-":
- $exp[1] *= -1;
- return $exp;
- }
- }
- if ($op == "not") {
- if ($inExp || $inParens) {
- if ($exp == self::$false) {
- return self::$true;
- } else {
- return self::$false;
- }
- } else {
- $op = $op . " ";
- }
- }
- return array("string", "", array($op, $exp));
- case "var":
- list(, $name) = $value;
- return $this->reduce($this->get($name));
- case "list":
- foreach ($value[2] as &$item) {
- $item = $this->reduce($item);
- }
- return $value;
- case "string":
- foreach ($value[2] as &$item) {
- if (is_array($item)) {
- $item = $this->reduce($item);
- }
- }
- return $value;
- case "interpolate":
- $value[1] = $this->reduce($value[1]);
- return $value;
- case "fncall":
- list(,$name, $argValues) = $value;
- // user defined function?
- $func = $this->get(self::$namespaces["function"] . $name, false);
- if ($func) {
- $this->pushEnv();
- // set the args
- if (isset($func->args)) {
- $this->applyArguments($func->args, $argValues);
- }
- // throw away lines and children
- $tmp = (object)array(
- "lines" => array(),
- "children" => array()
- );
- $ret = $this->compileChildren($func->children, $tmp);
- $this->popEnv();
- return is_null($ret) ? self::$defaultValue : $ret;
- }
- // built in function
- if ($this->callBuiltin($name, $argValues, $returnValue)) {
- return $returnValue;
- }
- // need to flatten the arguments into a list
- $listArgs = array();
- foreach ((array)$argValues as $arg) {
- if (empty($arg[0])) {
- $listArgs[] = $this->reduce($arg[1]);
- }
- }
- return array("function", $name, array("list", ",", $listArgs));
- default:
- return $value;
- }
- }
- public function normalizeValue($value) {
- $value = $this->coerceForExpression($this->reduce($value));
- list($type) = $value;
- switch ($type) {
- case "list":
- $value = $this->extractInterpolation($value);
- if ($value[0] != "list") {
- return array("keyword", $this->compileValue($value));
- }
- foreach ($value[2] as $key => $item) {
- $value[2][$key] = $this->normalizeValue($item);
- }
- return $value;
- case "number":
- return $this->normalizeNumber($value);
- default:
- return $value;
- }
- }
- // just does physical lengths for now
- protected function normalizeNumber($number) {
- list(, $value, $unit) = $number;
- if (isset(self::$unitTable["in"][$unit])) {
- $conv = self::$unitTable["in"][$unit];
- return array("number", $value / $conv, "in");
- }
- return $number;
- }
- // $number should be normalized
- protected function coerceUnit($number, $unit) {
- list(, $value, $baseUnit) = $number;
- if (isset(self::$unitTable[$baseUnit][$unit])) {
- $value = $value * self::$unitTable[$baseUnit][$unit];
- }
- return array("number", $value, $unit);
- }
- protected function op_add_number_number($left, $right) {
- return array("number", $left[1] + $right[1], $left[2]);
- }
- protected function op_mul_number_number($left, $right) {
- return array("number", $left[1] * $right[1], $left[2]);
- }
- protected function op_sub_number_number($left, $right) {
- return array("number", $left[1] - $right[1], $left[2]);
- }
- protected function op_div_number_number($left, $right) {
- return array("number", $left[1] / $right[1], $left[2]);
- }
- protected function op_mod_number_number($left, $right) {
- return array("number", $left[1] % $right[1], $left[2]);
- }
- // adding strings
- protected function op_add($left, $right) {
- if ($strLeft = $this->coerceString($left)) {
- if ($right[0] == "string") {
- $right[1] = "";
- }
- $strLeft[2][] = $right;
- return $strLeft;
- }
- if ($strRight = $this->coerceString($right)) {
- if ($left[0] == "string") {
- $left[1] = "";
- }
- array_unshift($strRight[2], $left);
- return $strRight;
- }
- }
- protected function op_and($left, $right, $shouldEval) {
- if (!$shouldEval) return;
- if ($left != self::$false) return $right;
- return $left;
- }
- protected function op_or($left, $right, $shouldEval) {
- if (!$shouldEval) return;
- if ($left != self::$false) return $left;
- return $right;
- }
- protected function op_color_color($op, $left, $right) {
- $out = array('color');
- foreach (range(1, 3) 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) {
- throw new Exception("color: Can't divide by zero");
- }
- $out[] = $lval / $rval;
- break;
- default:
- throw new Exception("color: unknow op $op");
- }
- }
- if (isset($left[4])) $out[4] = $left[4];
- elseif (isset($right[4])) $out[4] = $right[4];
- return $this->fixColor($out);
- }
- protected function op_color_number($op, $left, $right) {
- $value = $right[1];
- return $this->op_color_color($op, $left,
- array("color", $value, $value, $value));
- }
- protected function op_number_color($op, $left, $right) {
- $value = $left[1];
- return $this->op_color_color($op,
- array("color", $value, $value, $value), $right);
- }
- protected function op_eq($left, $right) {
- if (($lStr = $this->coerceString($left)) && ($rStr = $this->coerceString($right))) {
- $lStr[1] = "";
- $rStr[1] = "";
- return $this->toBool($this->compileValue($lStr) == $this->compileValue($rStr));
- }
- return $this->toBool($left == $right);
- }
- protected function op_neq($left, $right) {
- return $this->toBool($left != $right);
- }
- protected function op_gte_number_number($left, $right) {
- return $this->toBool($left[1] >= $right[1]);
- }
- protected function op_gt_number_number($left, $right) {
- return $this->toBool($left[1] > $right[1]);
- }
- protected function op_lte_number_number($left, $right) {
- return $this->toBool($left[1] <= $right[1]);
- }
- protected function op_lt_number_number($left, $right) {
- return $this->toBool($left[1] < $right[1]);
- }
- protected function toBool($thing) {
- return $thing ? self::$true : self::$false;
- }
- protected function compileValue($value) {
- $value = $this->reduce($value);
- list($type) = $value;
- switch ($type) {
- case "keyword":
- return $value[1];
- case "color":
- // [1] - red component (either number for a %)
- // [2] - green component
- // [3] - blue component
- // [4] - optional alpha component
- list(, $r, $g, $b) = $value;
- $r = round($r);
- $g = round($g);
- $b = round($b);
- if (count($value) == 5 && $value[4] != 1) { // rgba
- return 'rgba('.$r.', '.$g.', '.$b.', '.$value[4].')';
- }
- $h = sprintf("#%02x%02x%02x", $r, $g, $b);
- // Converting hex color to short notation (e.g. #003399 to #039)
- if ($h[1] === $h[2] && $h[3] === $h[4] && $h[5] === $h[6]) {
- $h = '#' . $h[1] . $h[3] . $h[5];
- }
- return $h;
- case "number":
- return round($value[1], self::$numberPrecision) . $value[2];
- case "string":
- return $value[1] . $this->compileStringContent($value) . $value[1];
- case "function":
- $args = !empty($value[2]) ? $this->compileValue($value[2]) : "";
- return "$value[1]($args)";
- case "list":
- $value = $this->extractInterpolation($value);
- if ($value[0] != "list") return $this->compileValue($value);
- list(, $delim, $items) = $value;
- foreach ($items as &$item) {
- $item = $this->compileValue($item);
- }
- return implode("$delim ", $items);
- case "interpolated": # node created by extractInterpolation
- list(, $interpolate, $left, $right) = $value;
- list(,, $whiteLeft, $whiteRight) = $interpolate;
- $left = count($left[2]) > 0 ?
- $this->compileValue($left).$whiteLeft : "";
- $right = count($right[2]) > 0 ?
- $whiteRight.$this->compileValue($right) : "";
- return $left.$this->compileValue($interpolate).$right;
- case "interpolate": # raw parse node
- list(, $exp) = $value;
- // strip quotes if it's a string
- $reduced = $this->reduce($exp);
- if ($reduced[0] == "string") {
- $reduced = array("keyword",
- $this->compileStringContent($reduced));
- }
- return $this->compileValue($reduced);
- default:
- throw new Exception("unknown value type: $type");
- }
- }
- protected function compileStringContent($string) {
- $parts = array();
- foreach ($string[2] as $part) {
- if (is_array($part)) {
- $parts[] = $this->compileValue($part);
- } else {
- $parts[] = $part;
- }
- }
- return implode($parts);
- }
- // doesn't need to be recursive, compileValue will handle that
- protected function extractInterpolation($list) {
- $items = $list[2];
- foreach ($items as $i => $item) {
- if ($item[0] == "interpolate") {
- $before = array("list", $list[1], array_slice($items, 0, $i));
- $after = array("list", $list[1], array_slice($items, $i + 1));
- return array("interpolated", $item, $before, $after);
- }
- }
- return $list;
- }
- // find the final set of selectors
- protected function multiplySelectors($env) {
- $envs = array();
- while (null !== $env) {
- if (!empty($env->selectors)) {
- $envs[] = $env;
- }
- $env = $env->parent;
- };
- $selectors = array();
- $parentSelectors = array(array());
- while ($env = array_pop($envs)) {
- $selectors = array();
- foreach ($env->selectors as $selector) {
- foreach ($parentSelectors as $parent) {
- $selectors[] = $this->joinSelectors($parent, $selector);
- }
- }
- $parentSelectors = $selectors;
- }
- return $selectors;
- }
- // looks for & to replace, or append parent before child
- protected function joinSelectors($parent, $child) {
- $setSelf = false;
- $out = array();
- foreach ($child as $part) {
- $newPart = array();
- foreach ($part as $p) {
- if ($p == self::$selfSelector) {
- $setSelf = true;
- foreach ($parent as $i => $parentPart) {
- if ($i > 0) {
- $out[] = $newPart;
- $newPart = array();
- }
- foreach ($parentPart as $pp) {
- $newPart[] = $pp;
- }
- }
- } else {
- $newPart[] = $p;
- }
- }
- $out[] = $newPart;
- }
- return $setSelf ? $out : array_merge($parent, $child);
- }
- protected function multiplyMedia($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);
- }
- $parentQueries = $env->block->queryList;
- if ($childQueries == null) {
- $childQueries = $parentQueries;
- } else {
- $originalQueries = $childQueries;
- $childQueries = array();
- foreach ($parentQueries as $parentQuery){
- foreach ($originalQueries as $childQuery) {
- $childQueries []= array_merge($parentQuery, $childQuery);
- }
- }
- }
- return $this->multiplyMedia($env->parent, $childQueries);
- }
- // convert something to list
- protected function coerceList($item, $delim = ",") {
- if (!is_null($item) && $item[0] == "list") {
- return $item;
- }
- return array("list", $delim, is_null($item) ? array(): array($item));
- }
- protected function applyArguments($argDef, $argValues) {
- $args = array();
- foreach ($argDef as $i => $arg) {
- list($name, $default, $isVariable) = $argDef[$i];
- $args[$name] = array($i, $name, $default, $isVariable);
- }
- $keywordArgs = array();
- $remaining = array();
- // assign the keyword args
- foreach ((array) $argValues as $arg) {
- if (!empty($arg[0])) {
- if (!isset($args[$arg[0][1]])) {
- throw new Exception(sprintf('Mixin or function doesn\'t have an argument named $%s.', $arg[0][1]));
- } elseif ($args[$arg[0][1]][0] < count($remaining)) {
- throw new Exception(sprintf('The argument $%s was passed both by position and by name.', $arg[0][1]));
- }
- $keywordArgs[$arg[0][1]] = $arg[1];
- } elseif (count($keywordArgs)) {
- throw new Exception('Positional arguments must come before keyword arguments.');
- } elseif ($arg[2] == true) {
- $val = $this->reduce($arg[1], true);
- if ($val[0] == "list") {
- foreach ($val[2] as $item) {
- $remaining[] = $item;
- }
- } else {
- $remaining[] = $val;
- }
- } else {
- $remaining[] = $arg[1];
- }
- }
- foreach ($args as $arg) {
- list($i, $name, $default, $isVariable) = $arg;
- if ($isVariable) {
- $val = array("list", ",", array());
- for ($count = count($remaining); $i < $count; $i++) {
- $val[2][] = $remaining[$i];
- }
- } elseif (isset($remaining[$i])) {
- $val = $remaining[$i];
- } elseif (isset($keywordArgs[$name])) {
- $val = $keywordArgs[$name];
- } elseif (!empty($default)) {
- $val = $default;
- } else {
- throw new Exception(sprintf('There is missing argument $%s', $name));
- }
- $this->set($name, $this->reduce($val, true), true);
- }
- }
- protected function pushEnv($block=null) {
- $env = new stdClass;
- $env->parent = $this->env;
- $env->store = array();
- $env->block = $block;
- $env->depth = isset($this->env->depth) ? $this->env->depth + 1 : 0;
- $this->env = $env;
- return $env;
- }
- protected function normalizeName($name) {
- return str_replace("-", "_", $name);
- }
- protected function getStoreEnv() {
- return isset($this->storeEnv) ? $this->storeEnv : $this->env;
- }
- protected function set($name, $value, $shadow=false) {
- $name = $this->normalizeName($name);
- if ($shadow) {
- $this->setRaw($name, $value);
- } else {
- $this->setExisting($name, $value);
- }
- }
- // todo: this is bugged?
- protected function setExisting($name, $value, $env = null) {
- if (is_null($env)) $env = $this->getStoreEnv();
- if (isset($env->store[$name])) {
- $env->store[$name] = $value;
- } elseif (!is_null($env->parent)) {
- $this->setExisting($name, $value, $env->parent);
- } else {
- $this->env->store[$name] = $value;
- }
- }
- protected function setRaw($name, $value) {
- $this->env->store[$name] = $value;
- }
- protected function get($name, $defaultValue = null, $env = null) {
- $name = $this->normalizeName($name);
- if (is_null($env)) $env = $this->getStoreEnv();
- if (is_null($defaultValue)) $defaultValue = self::$defaultValue;
- if (isset($env->store[$name])) {
- return $env->store[$name];
- } elseif (!is_null($env->parent)) {
- return $this->get($name, $defaultValue, $env->parent);
- }
- return $defaultValue; // found nothing
- }
- protected function popEnv() {
- $env = $this->env;
- $this->env = $this->env->parent;
- return $env;
- }
- public function getParsedFiles() {
- return $this->parsedFiles;
- }
- public function addImportPath($path) {
- $this->importPaths[] = $path;
- }
- public function setImportPaths($path) {
- $this->importPaths = (array)$path;
- }
- public function setFormatter($formatterName) {
- $this->formatter = $formatterName;
- }
- public function registerFunction($name, $func) {
- $this->userFunctions[$this->normalizeName($name)] = $func;
- }
- public function unregisterFunction($name) {
- unset($this->userFunctions[$this->normalizeName($name)]);
- }
- protected function importFile($path, $out) {
- // see if tree is cached
- $realPath = realpath($path);
- if (isset($this->importCache[$realPath])) {
- $tree = $this->importCache[$realPath];
- } else {
- $code = file_get_contents($path);
- $parser = new scss_parser($path);
- $tree = $parser->parse($code);
- $this->parsedFiles[] = $path;
- $this->importCache[$realPath] = $tree;
- }
- $pi = pathinfo($path);
- array_unshift($this->importPaths, $pi['dirname']);
- $this->compileChildren($tree->children, $out);
- array_shift($this->importPaths);
- }
- // results the file path for an import url if it exists
- protected function findImport($url) {
- $urls = array();
- // for "normal" scss imports (ignore vanilla css and external requests)
- if (!preg_match('/\.css|^http:\/\/$/', $url)) {
- // try both normal and the _partial filename
- $urls = array($url, preg_replace('/[^\/]+$/', '_\0', $url));
- }
- foreach ($this->importPaths as $dir) {
- if (is_string($dir)) {
- // check urls for normal import paths
- foreach ($urls as $full) {
- $full = $dir .
- (!empty($dir) && substr($dir, -1) != '/' ? '/' : '') .
- $full;
- if ($this->fileExists($file = $full.'.scss') ||
- $this->fileExists($file = $full))
- {
- return $file;
- }
- }
- } else {
- // check custom callback for import path
- $file = call_user_func($dir,$url,$this);
- if ($file !== null) {
- return $file;
- }
- }
- }
- return null;
- }
- protected function fileExists($name) {
- return is_file($name);
- }
- protected function callBuiltin($name, $args, &$returnValue) {
- // try a lib function
- $name = $this->normalizeName($name);
- $libName = "lib_".$name;
- $f = array($this, $libName);
- $prototype = isset(self::$$libName) ? self::$$libName : null;
- if (is_callable($f)) {
- $sorted = $this->sortArgs($prototype, $args);
- foreach ($sorted as &$val) {
- $val = $this->reduce($val, true);
- }
- $returnValue = call_user_func($f, $sorted, $this);
- } else if (isset($this->userFunctions[$name])) {
- // see if we can find a user function
- $fn = $this->userFunctions[$name];
- foreach ($args as &$val) {
- $val = $this->reduce($val[1], true);
- }
- $returnValue = call_user_func($fn, $args, $this);
- }
- if (isset($returnValue)) {
- // coerce a php value into a scss one
- if (is_numeric($returnValue)) {
- $returnValue = array('number', $returnValue, "");
- } elseif (is_bool($returnValue)) {
- $returnValue = $returnValue ? self::$true : self::$false;
- } elseif (!is_array($returnValue)) {
- $returnValue = array('keyword', $returnValue);
- }
- return true;
- }
- return false;
- }
- // sorts any keyword arguments
- // TODO: merge with apply arguments
- protected function sortArgs($prototype, $args) {
- $keyArgs = array();
- $posArgs = array();
- foreach ($args as $arg) {
- list($key, $value) = $arg;
- $key = $key[1];
- if (empty($key)) {
- $posArgs[] = $value;
- } else {
- $keyArgs[$key] = $value;
- }
- }
- if (is_null($prototype)) return $posArgs;
- $finalArgs = array();
- foreach ($prototype as $i => $names) {
- if (isset($posArgs[$i])) {
- $finalArgs[] = $posArgs[$i];
- continue;
- }
- $set = false;
- foreach ((array)$names as $name) {
- if (isset($keyArgs[$name])) {
- $finalArgs[] = $keyArgs[$name];
- $set = true;
- break;
- }
- }
- if (!$set) {
- $finalArgs[] = null;
- }
- }
- return $finalArgs;
- }
- protected function coerceForExpression($value) {
- if ($color = $this->coerceColor($value)) {
- return $color;
- }
- return $value;
- }
- protected function coerceColor($value) {
- switch ($value[0]) {
- case "color": return $value;
- case "keyword":
- $name = $value[1];
- if (isset(self::$cssColors[$name])) {
- list($r, $g, $b) = explode(',', self::$cssColors[$name]);
- return array('color', (int) $r, (int) $g, (int) $b);
- }
- return null;
- }
- return null;
- }
- protected function coerceString($value) {
- switch ($value[0]) {
- case "string":
- return $value;
- case "keyword":
- return array("string", "", array($value[1]));
- }
- return null;
- }
- protected function assertList($value) {
- if ($value[0] != "list")
- throw new exception("expecting list");
- return $value;
- }
- protected function assertColor($value) {
- if ($color = $this->coerceColor($value)) return $color;
- throw new Exception("expecting color");
- }
- protected function assertNumber($value) {
- if ($value[0] != "number")
- throw new Exception("expecting number");
- return $value[1];
- }
- protected function coercePercent($value) {
- if ($value[0] == "number") {
- if ($value[2] == "%") {
- return $value[1] / 100;
- }
- return $value[1];
- }
- return 0;
- }
- // make sure a color's components don't go out of bounds
- protected function fixColor($c) {
- foreach (range(1, 3) as $i) {
- if ($c[$i] < 0) $c[$i] = 0;
- if ($c[$i] > 255) $c[$i] = 255;
- }
- return $c;
- }
- function toHSL($r, $g, $b) {
- $r = $r / 255;
- $g = $g / 255;
- $b = $b / 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 - $min);
- }
- return array('hsl',
- ($H < 0 ? $H + 6 : $H)*60,
- $S*100,
- $L*100,
- );
- }
- function toRGB_helper($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 $temp1;
- }
- // H from 0 to 360, S and L from 0 to 100
- function toRGB($H, $S, $L) {
- $H = $H % 360;
- if ($H < 0) $H += 360;
- $S = min(100, max(0, $S));
- $L = min(100, max(0, $L));
- $H = $H / 360;
- $S = $S / 100;
- $L = $L / 100;
- if ($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', $r*255, $g*255, $b*255);
- return $out;
- }
- // Built in functions
- protected static $lib_if = array("condition", "if-true", "if-false");
- protected function lib_if($args) {
- list($cond,$t, $f) = $args;
- if ($cond == self::$false) return $f;
- return $t;
- }
- protected static $lib_index = array("list", "value");
- protected function lib_index($args) {
- list($list, $value) = $args;
- $list = $this->assertList($list);
- $values = array();
- foreach ($list[2] as $item) {
- $values[] = $this->normalizeValue($item);
- }
- $key = array_search($this->normalizeValue($value), $values);
- return false === $key ? false : $key + 1;
- }
- protected static $lib_rgb = array("red", "green", "blue");
- protected function lib_rgb($args) {
- list($r,$g,$b) = $args;
- return array("color", $r[1], $g[1], $b[1]);
- }
- protected static $lib_rgba = array(
- array("red", "color"),
- "green", "blue", "alpha");
- protected function lib_rgba($args) {
- if ($color = $this->coerceColor($args[0])) {
- $num = is_null($args[1]) ? $args[3] : $args[1];
- $alpha = $this->assertNumber($num);
- $color[4] = $alpha;
- return $color;
- }
- list($r,$g,$b, $a) = $args;
- return array("color", $r[1], $g[1], $b[1], $a[1]);
- }
- // helper function for adjust_color, change_color, and scale_color
- protected function alter_color($args, $fn) {
- $color = $this->assertColor($args[0]);
- foreach (array(1,2,3,7) as $i) {
- if (!is_null($args[$i])) {
- $val = $this->assertNumber($args[$i]);
- $ii = $i == 7 ? 4 : $i; // alpha
- $color[$ii] =
- $this->$fn(isset($color[$ii]) ? $color[$ii] : 0, $val, $i);
- }
- }
- if (!is_null($args[4]) || !is_null($args[5]) || !is_null($args[6])) {
- $hsl = $this->toHSL($color[1], $color[2], $color[3]);
- foreach (array(4,5,6) as $i) {
- if (!is_null($args[$i])) {
- $val = $this->assertNumber($args[$i]);
- $hsl[$i - 3] = $this->$fn($hsl[$i - 3], $val, $i);
- }
- }
- $rgb = $this->toRGB($hsl[1], $hsl[2], $hsl[3]);
- if (isset($color[4])) $rgb[4] = $color[4];
- $color = $rgb;
- }
- return $color;
- }
- protected static $lib_adjust_color = array(
- "color", "red", "green", "blue",
- "hue", "saturation", "lightness", "alpha"
- );
- protected function adjust_color_helper($base, $alter, $i) {
- return $base += $alter;
- }
- protected function lib_adjust_color($args) {
- return $this->alter_color($args, "adjust_color_helper");
- }
- protected static $lib_change_color = array(
- "color", "red", "green", "blue",
- "hue", "saturation", "lightness", "alpha"
- );
- protected function change_color_helper($base, $alter, $i) {
- return $alter;
- }
- protected function lib_change_color($args) {
- return $this->alter_color($args, "change_color_helper");
- }
- protected static $lib_scale_color = array(
- "color", "red", "green", "blue",
- "hue", "saturation", "lightness", "alpha"
- );
- protected function scale_color_helper($base, $scale, $i) {
- // 1,2,3 - rgb
- // 4, 5, 6 - hsl
- // 7 - a
- switch ($i) {
- case 1:
- case 2:
- case 3:
- $max = 255; break;
- case 4:
- $max = 360; break;
- case 7:
- $max = 1; break;
- default:
- $max = 100;
- }
- $scale = $scale / 100;
- if ($scale < 0) {
- return $base * $scale + $base;
- } else {
- return ($max - $base) * $scale + $base;
- }
- }
- protected function lib_scale_color($args) {
- return $this->alter_color($args, "scale_color_helper");
- }
- protected static $lib_ie_hex_str = array("color");
- protected function lib_ie_hex_str($args) {
- $color = $this->coerceColor($args[0]);
- $color[4] = isset($color[4]) ? round(255*$color[4]) : 255;
- return sprintf('#%02X%02X%02X%02X', $color[4], $color[1], $color[2], $color[3]);
- }
- protected static $lib_red = array("color");
- protected function lib_red($args) {
- list($color) = $args;
- return $color[1];
- }
- protected static $lib_green = array("color");
- protected function lib_green($args) {
- list($color) = $args;
- return $color[2];
- }
- protected static $lib_blue = array("color");
- protected function lib_blue($args) {
- list($color) = $args;
- return $color[3];
- }
- protected static $lib_alpha = array("color");
- protected function lib_alpha($args) {
- if ($color = $this->coerceColor($args[0])) {
- return isset($color[4]) ? $color[4] : 1;
- }
- // this might be the IE function, so return value unchanged
- return array("function", "alpha", array("list", ",", $args));
- }
- protected static $lib_opacity = array("color");
- protected function lib_opacity($args) {
- return $this->lib_alpha($args);
- }
- // mix two colors
- protected static $lib_mix = array("color-1", "color-2", "weight");
- protected function lib_mix($args) {
- list($first, $second, $weight) = $args;
- $first = $this->assertColor($first);
- $second = $this->assertColor($second);
- if (is_null($weight)) {
- $weight = 0.5;
- } else {
- $weight = $this->coercePercent($weight);
- }
- $first_a = isset($first[4]) ? $first[4] : 1;
- $second_a = isset($second[4]) ? $second[4] : 1;
- $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 static $lib_hsl = array("hue", "saturation", "lightness");
- protected function lib_hsl($args) {
- list($h, $s, $l) = $args;
- return $this->toRGB($h[1], $s[1], $l[1]);
- }
- protected static $lib_hsla = array("hue", "saturation",
- "lightness", "alpha");
- protected function lib_hsla($args) {
- list($h, $s, $l, $a) = $args;
- $color = $this->toRGB($h[1], $s[1], $l[1]);
- $color[4] = $a[1];
- return $color;
- }
- protected static $lib_hue = array("color");
- protected function lib_hue($args) {
- $color = $this->assertColor($args[0]);
- $hsl = $this->toHSL($color[1], $color[2], $color[3]);
- return array("number", $hsl[1], "deg");
- }
- protected static $lib_saturation = array("color");
- protected function lib_saturation($args) {
- $color = $this->assertColor($args[0]);
- $hsl = $this->toHSL($color[1], $color[2], $color[3]);
- return array("number", $hsl[2], "%");
- }
- protected static $lib_lightness = array("color");
- protected function lib_lightness($args) {
- $color = $this->assertColor($args[0]);
- $hsl = $this->toHSL($color[1], $color[2], $color[3]);
- return array("number", $hsl[3], "%");
- }
- protected function adjustHsl($color, $idx, $amount) {
- $hsl = $this->toHSL($color[1], $color[2], $color[3]);
- $hsl[$idx] += $amount;
- $out = $this->toRGB($hsl[1], $hsl[2], $hsl[3]);
- if (isset($color[4])) $out[4] = $color[4];
- return $out;
- }
- protected static $lib_adjust_hue = array("color", "degrees");
- protected function lib_adjust_hue($args) {
- $color = $this->assertColor($args[0]);
- $degrees = $this->assertNumber($args[1]);
- return $this->adjustHsl($color, 1, $degrees);
- }
- protected static $lib_lighten = array("color", "amount");
- protected function lib_lighten($args) {
- $color = $this->assertColor($args[0]);
- $amount = 100*$this->coercePercent($args[1]);
- return $this->adjustHsl($color, 3, $amount);
- }
- protected static $lib_darken = array("color", "amount");
- protected function lib_darken($args) {
- $color = $this->assertColor($args[0]);
- $amount = 100*$this->coercePercent($args[1]);
- return $this->adjustHsl($color, 3, -$amount);
- }
- protected static $lib_saturate = array("color", "amount");
- protected function lib_saturate($args) {
- $color = $this->assertColor($args[0]);
- $amount = 100*$this->coercePercent($args[1]);
- return $this->adjustHsl($color, 2, $amount);
- }
- protected static $lib_desaturate = array("color", "amount");
- protected function lib_desaturate($args) {
- $color = $this->assertColor($args[0]);
- $amount = 100*$this->coercePercent($args[1]);
- return $this->adjustHsl($color, 2, -$amount);
- }
- protected static $lib_grayscale = array("color");
- protected function lib_grayscale($args) {
- return $this->adjustHsl($this->assertColor($args[0]), 2, -100);
- }
- protected static $lib_complement = array("color");
- protected function lib_complement($args) {
- return $this->adjustHsl($this->assertColor($args[0]), 1, 180);
- }
- protected static $lib_invert = array("color");
- protected function lib_invert($args) {
- $color = $this->assertColor($args[0]);
- $color[1] = 255 - $color[1];
- $color[2] = 255 - $color[2];
- $color[3] = 255 - $color[3];
- return $color;
- }
- // increases opacity by amount
- protected static $lib_opacify = array("color", "amount");
- protected function lib_opacify($args) {
- $color = $this->assertColor($args[0]);
- $amount = $this->coercePercent($args[1]);
- $color[4] = (isset($color[4]) ? $color[4] : 1) + $amount;
- $color[4] = min(1, max(0, $color[4]));
- return $color;
- }
- protected static $lib_fade_in = array("color", "amount");
- protected function lib_fade_in($args) {
- return $this->lib_opacify($args);
- }
- // decreases opacity by amount
- protected static $lib_transparentize = array("color", "amount");
- protected function lib_transparentize($args) {
- $color = $this->assertColor($args[0]);
- $amount = $this->coercePercent($args[1]);
- $color[4] = (isset($color[4]) ? $color[4] : 1) - $amount;
- $color[4] = min(1, max(0, $color[4]));
- return $color;
- }
- protected static $lib_fade_out = array("color", "amount");
- protected function lib_fade_out($args) {
- return $this->lib_transparentize($args);
- }
- protected static $lib_unquote = array("string");
- protected function lib_unquote($args) {
- $str = $args[0];
- if ($str[0] == "string") $str[1] = "";
- return $str;
- }
- protected static $lib_quote = array("string");
- protected function lib_quote($args) {
- $value = $args[0];
- if ($value[0] == "string" && !empty($value[1]))
- return $value;
- return array("string", '"', array($value));
- }
- protected static $lib_percentage = array("value");
- protected function lib_percentage($args) {
- return array("number",
- $this->coercePercent($args[0]) * 100,
- "%");
- }
- protected static $lib_round = array("value");
- protected function lib_round($args) {
- $num = $args[0];
- $num[1] = round($num[1]);
- return $num;
- }
- protected stat…
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