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Created April 10, 2011 02:33
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cssmin by Joe Scylla from Googlecode (this gist is used by BakingPlate to git the code)
Raw
CssMin.php
<?php
/**
* CssMin - A (simple) css minifier with benefits
*
* --
*
* 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.
* --
*
* @package CssMin
* @link http://code.google.com/p/cssmin/
* @author Joe Scylla <joe.scylla@gmail.com>
* @copyright 2008 - 2011 Joe Scylla <joe.scylla@gmail.com>
* @license http://opensource.org/licenses/mit-license.php MIT License
* @version 2.0.2.2 (2011-03-28)
*/
class CssMin
{
/**
* Null-Token.
*
* @var integer
*/
const T_NULL = 0;
/**
* State: Is in document
*
* @var integer
*/
const T_DOCUMENT = 1;
/**
* Token: Comment
*
* @var integer
*/
const T_COMMENT = 2;
/**
* Token: Generic at-rule
*
* @var integer
*/
const T_AT_RULE = 3;
/**
* Token: Generic at-rule
*
* @var integer
*/
const T_AT_IMPORT = 22;
/**
* Token: Start of @media block
*
* @var integer
*/
const T_AT_MEDIA_START = 4;
/**
* State: Is in @media block
*
* @var integer
*/
const T_AT_MEDIA = 5;
/**
* Token: End of @media block
*
* @var integer
*/
const T_AT_MEDIA_END = 6;
/**
* Token: Start of @font-face block
*
* @var integer
*/
const T_AT_FONT_FACE_START = 7;
/**
* State: Is in @font-face block
*
* @var integer
*/
const T_AT_FONT_FACE = 8;
/**
* Token: @font-face declaration
*
* @var integer
*/
const T_FONT_FACE_DECLARATION = 9;
/**
* Token: End of @font-face block
*
* @var integer
*/
const T_AT_FONT_FACE_END = 10;
/**
* Token: Start of @page block
*
* @var integer
*/
const T_AT_PAGE_START = 11;
/**
* State: Is in @page block
*
* @var integer
*/
const T_AT_PAGE = 12;
/**
* Token: @page declaration
*
* @var integer
*/
const T_PAGE_DECLARATION = 13;
/**
* Token: End of @page block
*
* @var integer
*/
const T_AT_PAGE_END = 14;
/**
* Token: Start of ruleset
*
* @var integer
*/
const T_RULESET_START = 15;
/**
* Token: Ruleset selectors
*
* @var integer
*/
const T_SELECTORS = 16;
/**
* Token: Start of declarations
*
* @var integer
*/
const T_DECLARATIONS_START = 17;
/**
* State: Is in declarations
*
* @var integer
*/
const T_DECLARATIONS = 18;
/**
* Token: Declaration
*
* @var integer
*/
const T_DECLARATION = 19;
/**
* Token: End of declarations
*
* @var integer
*/
const T_DECLARATIONS_END = 20;
/**
* Token: End of ruleset
*
* @var integer
*/
const T_RULESET_END = 21;
/**
* Token: Start of @variables block
*
* @var integer
*/
const T_AT_VARIABLES_START = 100;
/**
* State: Is in @variables block
*
* @var integer
*/
const T_AT_VARIABLES = 101;
/**
* Token: @variables declaration
*
* @var integer
*/
const T_VARIABLE_DECLARATION = 102;
/**
* Token: End of @variables block
*
* @var integer
*/
const T_AT_VARIABLES_END = 103;
/**
* State: Is in string
*
* @var integer
*/
const T_STRING = 253;
/**
* State: Is in url string property
*
* @var integer
*/
const T_STRING_URL = 254;
/**
* State: Is in expression string property
*
* @var integer
*/
const T_STRING_EXPRESSION = 255;
/**
* Default configuration.
*
* @var array
*/
private static $defaultConfiguration = array
(
"remove-empty-blocks" => true,
"remove-empty-rulesets" => true,
"remove-last-semicolons" => true,
"remove-comments" => true,
"convert-css3-properties" => false,
"convert-font-weight-values" => false,
"convert-named-color-values" => false,
"convert-hsl-color-values" => false,
"convert-rgb-color-values" => false,
"compress-color-values" => false,
"compress-unit-values" => false,
"emulate-css3-variables" => true,
"import-imports" => false,
"import-base-path" => null,
"import-remove-invalid" => false
);
/**
* Css color transformations table. Used to convert named colors to hexadecimal notation.
*
* @var array
*/
private static $colorTransformations = array
(
"aliceblue" => "#f0f8ff",
"antiquewhite" => "#faebd7",
"aqua" => "#0ff",
"aquamarine" => "#7fffd4",
"azure" => "#f0ffff",
"beige" => "#f5f5dc",
"black" => "#000",
"blue" => "#00f",
"blueviolet" => "#8a2be2",
"brown" => "#a52a2a",
"burlywood" => "#deb887",
"cadetblue" => "#5f9ea0",
"chartreuse" => "#7fff00",
"chocolate" => "#d2691e",
"coral" => "#ff7f50",
"cornflowerblue" => "#6495ed",
"cornsilk" => "#fff8dc",
"crimson" => "#dc143c",
"darkblue" => "#00008b",
"darkcyan" => "#008b8b",
"darkgoldenrod" => "#b8860b",
"darkgray" => "#a9a9a9",
"darkgreen" => "#006400",
"darkkhaki" => "#bdb76b",
"darkmagenta" => "#8b008b",
"darkolivegreen" => "#556b2f",
"darkorange" => "#ff8c00",
"darkorchid" => "#9932cc",
"darkred" => "#8b0000",
"darksalmon" => "#e9967a",
"darkseagreen" => "#8fbc8f",
"darkslateblue" => "#483d8b",
"darkslategray" => "#2f4f4f",
"darkturquoise" => "#00ced1",
"darkviolet" => "#9400d3",
"deeppink" => "#ff1493",
"deepskyblue" => "#00bfff",
"dimgray" => "#696969",
"dodgerblue" => "#1e90ff",
"firebrick" => "#b22222",
"floralwhite" => "#fffaf0",
"forestgreen" => "#228b22",
"fuchsia" => "#f0f",
"gainsboro" => "#dcdcdc",
"ghostwhite" => "#f8f8ff",
"gold" => "#ffd700",
"goldenrod" => "#daa520",
"gray" => "#808080",
"green" => "#008000",
"greenyellow" => "#adff2f",
"honeydew" => "#f0fff0",
"hotpink" => "#ff69b4",
"indianred" => "#cd5c5c",
"indigo" => "#4b0082",
"ivory" => "#fffff0",
"khaki" => "#f0e68c",
"lavender" => "#e6e6fa",
"lavenderblush" => "#fff0f5",
"lawngreen" => "#7cfc00",
"lemonchiffon" => "#fffacd",
"lightblue" => "#add8e6",
"lightcoral" => "#f08080",
"lightcyan" => "#e0ffff",
"lightgoldenrodyellow" => "#fafad2",
"lightgreen" => "#90ee90",
"lightgrey" => "#d3d3d3",
"lightpink" => "#ffb6c1",
"lightsalmon" => "#ffa07a",
"lightseagreen" => "#20b2aa",
"lightskyblue" => "#87cefa",
"lightslategray" => "#789",
"lightsteelblue" => "#b0c4de",
"lightyellow" => "#ffffe0",
"lime" => "#0f0",
"limegreen" => "#32cd32",
"linen" => "#faf0e6",
"maroon" => "#800000",
"mediumaquamarine" => "#66cdaa",
"mediumblue" => "#0000cd",
"mediumorchid" => "#ba55d3",
"mediumpurple" => "#9370db",
"mediumseagreen" => "#3cb371",
"mediumslateblue" => "#7b68ee",
"mediumspringgreen" => "#00fa9a",
"mediumturquoise" => "#48d1cc",
"mediumvioletred" => "#c71585",
"midnightblue" => "#191970",
"mintcream" => "#f5fffa",
"mistyrose" => "#ffe4e1",
"moccasin" => "#ffe4b5",
"navajowhite" => "#ffdead",
"navy" => "#000080",
"oldlace" => "#fdf5e6",
"olive" => "#808000",
"olivedrab" => "#6b8e23",
"orange" => "#ffa500",
"orangered" => "#ff4500",
"orchid" => "#da70d6",
"palegoldenrod" => "#eee8aa",
"palegreen" => "#98fb98",
"paleturquoise" => "#afeeee",
"palevioletred" => "#db7093",
"papayawhip" => "#ffefd5",
"peachpuff" => "#ffdab9",
"peru" => "#cd853f",
"pink" => "#ffc0cb",
"plum" => "#dda0dd",
"powderblue" => "#b0e0e6",
"purple" => "#800080",
"red" => "#f00",
"rosybrown" => "#bc8f8f",
"royalblue" => "#4169e1",
"saddlebrown" => "#8b4513",
"salmon" => "#fa8072",
"sandybrown" => "#f4a460",
"seagreen" => "#2e8b57",
"seashell" => "#fff5ee",
"sienna" => "#a0522d",
"silver" => "#c0c0c0",
"skyblue" => "#87ceeb",
"slateblue" => "#6a5acd",
"slategray" => "#708090",
"snow" => "#fffafa",
"springgreen" => "#00ff7f",
"steelblue" => "#4682b4",
"tan" => "#d2b48c",
"teal" => "#008080",
"thistle" => "#d8bfd8",
"tomato" => "#ff6347",
"turquoise" => "#40e0d0",
"violet" => "#ee82ee",
"wheat" => "#f5deb3",
"white" => "#fff",
"whitesmoke" => "#f5f5f5",
"yellow" => "#ff0",
"yellowgreen" => "#9acd32"
);
/**
*
* @var array
*/
private static $fontWeightTransformations = array
(
"normal" => "400",
"bold" => "700"
);
/**
* Css property transformations table. Used to convert CSS3 and proprietary properties to the browser-specific counterparts.
*
* @var array
*/
private static $propertyTransformations = array
(
// Property Array(Mozilla, Webkit, Opera, Internet Explorer); NULL values are placeholders and will get ignored
"animation" => array(null, "-webkit-animation", null, null),
"animation-delay" => array(null, "-webkit-animation-delay", null, null),
"animation-direction" => array(null, "-webkit-animation-direction", null, null),
"animation-duration" => array(null, "-webkit-animation-duration", null, null),
"animation-fill-mode" => array(null, "-webkit-animation-fill-mode", null, null),
"animation-iteration-count" => array(null, "-webkit-animation-iteration-count", null, null),
"animation-name" => array(null, "-webkit-animation-name", null, null),
"animation-play-state" => array(null, "-webkit-animation-play-state", null, null),
"animation-timing-function" => array(null, "-webkit-animation-timing-function", null, null),
"appearance" => array("-moz-appearance", "-webkit-appearance", null, null),
"backface-visibility" => array(null, "-webkit-backface-visibility", null, null),
"background-clip" => array(null, "-webkit-background-clip", null, null),
"background-composite" => array(null, "-webkit-background-composite", null, null),
"background-inline-policy" => array("-moz-background-inline-policy", null, null, null),
"background-origin" => array(null, "-webkit-background-origin", null, null),
"background-position-x" => array(null, null, null, "-ms-background-position-x"),
"background-position-y" => array(null, null, null, "-ms-background-position-y"),
"background-size" => array(null, "-webkit-background-size", null, null),
"behavior" => array(null, null, null, "-ms-behavior"),
"binding" => array("-moz-binding", null, null, null),
"border-after" => array(null, "-webkit-border-after", null, null),
"border-after-color" => array(null, "-webkit-border-after-color", null, null),
"border-after-style" => array(null, "-webkit-border-after-style", null, null),
"border-after-width" => array(null, "-webkit-border-after-width", null, null),
"border-before" => array(null, "-webkit-border-before", null, null),
"border-before-color" => array(null, "-webkit-border-before-color", null, null),
"border-before-style" => array(null, "-webkit-border-before-style", null, null),
"border-before-width" => array(null, "-webkit-border-before-width", null, null),
"border-border-bottom-colors" => array("-moz-border-bottom-colors", null, null, null),
"border-bottom-left-radius" => array("-moz-border-radius-bottomleft", "-webkit-border-bottom-left-radius", null, null),
"border-bottom-right-radius" => array("-moz-border-radius-bottomright", "-webkit-border-bottom-right-radius", null, null),
"border-end" => array("-moz-border-end", "-webkit-border-end", null, null),
"border-end-color" => array("-moz-border-end-color", "-webkit-border-end-color", null, null),
"border-end-style" => array("-moz-border-end-style", "-webkit-border-end-style", null, null),
"border-end-width" => array("-moz-border-end-width", "-webkit-border-end-width", null, null),
"border-fit" => array(null, "-webkit-border-fit", null, null),
"border-horizontal-spacing" => array(null, "-webkit-border-horizontal-spacing", null, null),
"border-image" => array("-moz-border-image", "-webkit-border-image", null, null),
"border-left-colors" => array("-moz-border-left-colors", null, null, null),
"border-radius" => array("-moz-border-radius", "-webkit-border-radius", null, null),
"border-border-right-colors" => array("-moz-border-right-colors", null, null, null),
"border-start" => array("-moz-border-start", "-webkit-border-start", null, null),
"border-start-color" => array("-moz-border-start-color", "-webkit-border-start-color", null, null),
"border-start-style" => array("-moz-border-start-style", "-webkit-border-start-style", null, null),
"border-start-width" => array("-moz-border-start-width", "-webkit-border-start-width", null, null),
"border-top-colors" => array("-moz-border-top-colors", null, null, null),
"border-top-left-radius" => array("-moz-border-radius-topleft", "-webkit-border-top-left-radius", null, null),
"border-top-right-radius" => array("-moz-border-radius-topright", "-webkit-border-top-right-radius", null, null),
"border-vertical-spacing" => array(null, "-webkit-border-vertical-spacing", null, null),
"box-align" => array("-moz-box-align", "-webkit-box-align", null, null),
"box-direction" => array("-moz-box-direction", "-webkit-box-direction", null, null),
"box-flex" => array("-moz-box-flex", "-webkit-box-flex", null, null),
"box-flex-group" => array(null, "-webkit-box-flex-group", null, null),
"box-flex-lines" => array(null, "-webkit-box-flex-lines", null, null),
"box-ordinal-group" => array("-moz-box-ordinal-group", "-webkit-box-ordinal-group", null, null),
"box-orient" => array("-moz-box-orient", "-webkit-box-orient", null, null),
"box-pack" => array("-moz-box-pack", "-webkit-box-pack", null, null),
"box-reflect" => array(null, "-webkit-box-reflect", null, null),
"box-shadow" => array("-moz-box-shadow", "-webkit-box-shadow", null, null),
"box-sizing" => array("-moz-box-sizing", null, null, null),
"color-correction" => array(null, "-webkit-color-correction", null, null),
"column-break-after" => array(null, "-webkit-column-break-after", null, null),
"column-break-before" => array(null, "-webkit-column-break-before", null, null),
"column-break-inside" => array(null, "-webkit-column-break-inside", null, null),
"column-count" => array("-moz-column-count", "-webkit-column-count", null, null),
"column-gap" => array("-moz-column-gap", "-webkit-column-gap", null, null),
"column-rule" => array("-moz-column-rule", "-webkit-column-rule", null, null),
"column-rule-color" => array("-moz-column-rule-color", "-webkit-column-rule-color", null, null),
"column-rule-style" => array("-moz-column-rule-style", "-webkit-column-rule-style", null, null),
"column-rule-width" => array("-moz-column-rule-width", "-webkit-column-rule-width", null, null),
"column-span" => array(null, "-webkit-column-span", null, null),
"column-width" => array("-moz-column-width", "-webkit-column-width", null, null),
"columns" => array(null, "-webkit-columns", null, null),
"filter" => array(null, null, null, "-ms-filter"),
"float-edge" => array("-moz-float-edge", null, null, null),
"font-feature-settings" => array("-moz-font-feature-settings", null, null, null),
"font-language-override" => array("-moz-font-language-override", null, null, null),
"font-size-delta" => array(null, "-webkit-font-size-delta", null, null),
"font-smoothing" => array(null, "-webkit-font-smoothing", null, null),
"force-broken-image-icon" => array("-moz-force-broken-image-icon", null, null, null),
"highlight" => array(null, "-webkit-highlight", null, null),
"hyphenate-character" => array(null, "-webkit-hyphenate-character", null, null),
"hyphenate-locale" => array(null, "-webkit-hyphenate-locale", null, null),
"hyphens" => array(null, "-webkit-hyphens", null, null),
"force-broken-image-icon" => array("-moz-image-region", null, null, null),
"ime-mode" => array(null, null, null, "-ms-ime-mode"),
"interpolation-mode" => array(null, null, null, "-ms-interpolation-mode"),
"layout-flow" => array(null, null, null, "-ms-layout-flow"),
"layout-grid" => array(null, null, null, "-ms-layout-grid"),
"layout-grid-char" => array(null, null, null, "-ms-layout-grid-char"),
"layout-grid-line" => array(null, null, null, "-ms-layout-grid-line"),
"layout-grid-mode" => array(null, null, null, "-ms-layout-grid-mode"),
"layout-grid-type" => array(null, null, null, "-ms-layout-grid-type"),
"line-break" => array(null, "-webkit-line-break", null, "-ms-line-break"),
"line-clamp" => array(null, "-webkit-line-clamp", null, null),
"line-grid-mode" => array(null, null, null, "-ms-line-grid-mode"),
"logical-height" => array(null, "-webkit-logical-height", null, null),
"logical-width" => array(null, "-webkit-logical-width", null, null),
"margin-after" => array(null, "-webkit-margin-after", null, null),
"margin-after-collapse" => array(null, "-webkit-margin-after-collapse", null, null),
"margin-before" => array(null, "-webkit-margin-before", null, null),
"margin-before-collapse" => array(null, "-webkit-margin-before-collapse", null, null),
"margin-bottom-collapse" => array(null, "-webkit-margin-bottom-collapse", null, null),
"margin-collapse" => array(null, "-webkit-margin-collapse", null, null),
"margin-end" => array("-moz-margin-end", "-webkit-margin-end", null, null),
"margin-start" => array("-moz-margin-start", "-webkit-margin-start", null, null),
"margin-top-collapse" => array(null, "-webkit-margin-top-collapse", null, null),
"marquee " => array(null, "-webkit-marquee", null, null),
"marquee-direction" => array(null, "-webkit-marquee-direction", null, null),
"marquee-increment" => array(null, "-webkit-marquee-increment", null, null),
"marquee-repetition" => array(null, "-webkit-marquee-repetition", null, null),
"marquee-speed" => array(null, "-webkit-marquee-speed", null, null),
"marquee-style" => array(null, "-webkit-marquee-style", null, null),
"mask" => array(null, "-webkit-mask", null, null),
"mask-attachment" => array(null, "-webkit-mask-attachment", null, null),
"mask-box-image" => array(null, "-webkit-mask-box-image", null, null),
"mask-clip" => array(null, "-webkit-mask-clip", null, null),
"mask-composite" => array(null, "-webkit-mask-composite", null, null),
"mask-image" => array(null, "-webkit-mask-image", null, null),
"mask-origin" => array(null, "-webkit-mask-origin", null, null),
"mask-position" => array(null, "-webkit-mask-position", null, null),
"mask-position-x" => array(null, "-webkit-mask-position-x", null, null),
"mask-position-y" => array(null, "-webkit-mask-position-y", null, null),
"mask-repeat" => array(null, "-webkit-mask-repeat", null, null),
"mask-repeat-x" => array(null, "-webkit-mask-repeat-x", null, null),
"mask-repeat-y" => array(null, "-webkit-mask-repeat-y", null, null),
"mask-size" => array(null, "-webkit-mask-size", null, null),
"match-nearest-mail-blockquote-color" => array(null, "-webkit-match-nearest-mail-blockquote-color", null, null),
"max-logical-height" => array(null, "-webkit-max-logical-height", null, null),
"max-logical-width" => array(null, "-webkit-max-logical-width", null, null),
"min-logical-height" => array(null, "-webkit-min-logical-height", null, null),
"min-logical-width" => array(null, "-webkit-min-logical-width", null, null),
"object-fit" => array(null, null, "-o-object-fit", null),
"object-position" => array(null, null, "-o-object-position", null),
"opacity" => array(array(__CLASS__, "_opacityTransformation")),
"outline-radius" => array("-moz-outline-radius", null, null, null),
"outline-bottom-left-radius" => array("-moz-outline-radius-bottomleft", null, null, null),
"outline-bottom-right-radius" => array("-moz-outline-radius-bottomright", null, null, null),
"outline-top-left-radius" => array("-moz-outline-radius-topleft", null, null, null),
"outline-top-right-radius" => array("-moz-outline-radius-topright", null, null, null),
"padding-after" => array(null, "-webkit-padding-after", null, null),
"padding-before" => array(null, "-webkit-padding-before", null, null),
"padding-end" => array("-moz-padding-end", "-webkit-padding-end", null, null),
"padding-start" => array("-moz-padding-start", "-webkit-padding-start", null, null),
"perspective" => array(null, "-webkit-perspective", null, null),
"perspective-origin" => array(null, "-webkit-perspective-origin", null, null),
"perspective-origin-x" => array(null, "-webkit-perspective-origin-x", null, null),
"perspective-origin-y" => array(null, "-webkit-perspective-origin-y", null, null),
"rtl-ordering" => array(null, "-webkit-rtl-ordering", null, null),
"scrollbar-3dlight-color" => array(null, null, null, "-ms-scrollbar-3dlight-color"),
"scrollbar-arrow-color" => array(null, null, null, "-ms-scrollbar-arrow-color"),
"scrollbar-base-color" => array(null, null, null, "-ms-scrollbar-base-color"),
"scrollbar-darkshadow-color" => array(null, null, null, "-ms-scrollbar-darkshadow-color"),
"scrollbar-face-color" => array(null, null, null, "-ms-scrollbar-face-color"),
"scrollbar-highlight-color" => array(null, null, null, "-ms-scrollbar-highlight-color"),
"scrollbar-shadow-color" => array(null, null, null, "-ms-scrollbar-shadow-color"),
"scrollbar-track-color" => array(null, null, null, "-ms-scrollbar-track-color"),
"stack-sizing" => array("-moz-stack-sizing", null, null, null),
"svg-shadow" => array(null, "-webkit-svg-shadow", null, null),
"tab-size" => array("-moz-tab-size", null, "-o-tab-size", null),
"table-baseline" => array(null, null, "-o-table-baseline", null),
"text-align-last" => array(null, null, null, "-ms-text-align-last"),
"text-autospace" => array(null, null, null, "-ms-text-autospace"),
"text-combine" => array(null, "-webkit-text-combine", null, null),
"text-decorations-in-effect" => array(null, "-webkit-text-decorations-in-effect", null, null),
"text-emphasis" => array(null, "-webkit-text-emphasis", null, null),
"text-emphasis-color" => array(null, "-webkit-text-emphasis-color", null, null),
"text-emphasis-position" => array(null, "-webkit-text-emphasis-position", null, null),
"text-emphasis-style" => array(null, "-webkit-text-emphasis-style", null, null),
"text-fill-color" => array(null, "-webkit-text-fill-color", null, null),
"text-justify" => array(null, null, null, "-ms-text-justify"),
"text-kashida-space" => array(null, null, null, "-ms-text-kashida-space"),
"text-overflow" => array(null, null, "-o-text-overflow", "-ms-text-overflow"),
"text-security" => array(null, "-webkit-text-security", null, null),
"text-size-adjust" => array(null, "-webkit-text-size-adjust", null, "-ms-text-size-adjust"),
"text-stroke" => array(null, "-webkit-text-stroke", null, null),
"text-stroke-color" => array(null, "-webkit-text-stroke-color", null, null),
"text-stroke-width" => array(null, "-webkit-text-stroke-width", null, null),
"text-underline-position" => array(null, null, null, "-ms-text-underline-position"),
"transform" => array("-moz-transform", "-webkit-transform", "-o-transform", null),
"transform-origin" => array("-moz-transform-origin", "-webkit-transform-origin", "-o-transform-origin", null),
"transform-origin-x" => array(null, "-webkit-transform-origin-x", null, null),
"transform-origin-y" => array(null, "-webkit-transform-origin-y", null, null),
"transform-origin-z" => array(null, "-webkit-transform-origin-z", null, null),
"transform-style" => array(null, "-webkit-transform-style", null, null),
"transition" => array("-moz-transition", "-webkit-transition", "-o-transition", null),
"transition-delay" => array("-moz-transition-delay", "-webkit-transition-delay", "-o-transition-delay", null),
"transition-duration" => array("-moz-transition-duration", "-webkit-transition-duration", "-o-transition-duration", null),
"transition-property" => array("-moz-transition-property", "-webkit-transition-property", "-o-transition-property", null),
"transition-timing-function" => array("-moz-transition-timing-function", "-webkit-transition-timing-function", "-o-transition-timing-function", null),
"user-drag" => array(null, "-webkit-user-drag", null, null),
"user-focus" => array("-moz-user-focus", null, null, null),
"user-input" => array("-moz-user-input", null, null, null),
"user-modify" => array("-moz-user-modify", "-webkit-user-modify", null, null),
"user-select" => array("-moz-user-select", "-webkit-user-select", null, null),
"white-space" => array(array(__CLASS__, "_whiteSpacePreWrapTransformation")),
"window-shadow" => array("-moz-window-shadow", null, null, null),
"word-break" => array(null, null, null, "-ms-word-break"),
"word-wrap" => array(null, null, null, "-ms-word-wrap"),
"writing-mode" => array(null, "-webkit-writing-mode", null, "-ms-writing-mode"),
"zoom" => array(null, null, null, "-ms-zoom")
);
/**
* Minifies the Css.
*
* @param string $css Css as string
* @param array $config {@link http://code.google.com/p/cssmin/wiki/Configuration Configuration} as array [optional]
* @return string Minified css
*/
public static function minify($css, $config = array())
{
$tokens = self::parse($css);
// Normalize configuration parameters
if (count($config) > 0)
{
$config = array_combine(array_map("trim", array_map("strtolower", array_keys($config))), array_values($config));
}
$config = array_merge(self::$defaultConfiguration, $config);
// Minification options/variables
$sRemoveEmptyBlocks = $config["remove-empty-blocks"];
$sRemoveEmptyRulesets = $config["remove-empty-rulesets"];
$sRemoveLastSemicolon = $config["remove-last-semicolons"];
$sRemoveComments = $config["remove-comments"];
$sConvertCss3Properties = $config["convert-css3-properties"];
$sCss3Variables = array();
$sConvertFontWeightValues = $config["convert-font-weight-values"];
$rConvertFontWeightValues = "/(^|\s)+(normal|bold)(\s|$)+/ie";
$rConvertFontWeightValuesR = "'\\1'.self::\$fontWeightTransformations['\\2'].'\\3'";
$sConvertNamedColorValues = $config["convert-named-color-values"];
$rConvertNamedColorValues = "/(^|\s)+(" . implode("|", array_keys(self::$colorTransformations)) . ")(\s|$)+/ie";
$rConvertNamedColorValuesR = "'\\1'.self::\$colorTransformations['\\2'].'\\3'";
$sConvertRgbColorValues = $config["convert-rgb-color-values"];
$rConvertRgbColorValues = "/rgb\s*\(\s*([0-9%]+)\s*,\s*([0-9%]+)\s*,\s*([0-9%]+)\s*\)/iS";
$sConvertHslColorValues = $config["convert-rgb-color-values"];
$rConvertHslColorValues = "/^hsl\s*\(\s*([0-9]+)\s*,\s*([0-9]+)\s*%\s*,\s*([0-9]+)\s*%\s*\)/iS";
$sCompressColorValues = $config["compress-color-values"];
$rCompressColorValues = "/\#([0-9a-f]{6})/iS";
$sCompressUnitValues = $config["compress-unit-values"];
$rCompressUnitValues1 = "/(^| |-)0\.([0-9]+?)(0+)?(%|em|ex|px|in|cm|mm|pt|pc)/iS";
$rCompressUnitValues1R = "\${1}.\${2}\${4}";
$rCompressUnitValues2 = "/(^| )-?(\.?)0(%|em|ex|px|in|cm|mm|pt|pc)/iS";
$rCompressUnitValues2R = "\${1}0";
$sEmulateCcss3Variables = $config["emulate-css3-variables"];
$sImportImports = $config["import-imports"];
$sImportBasePath = $config["import-base-path"];
$sImportRemoveInvalid = $config["import-remove-invalid"];
$sImportStartBlockTokens = array(self::T_AT_MEDIA_START, self::T_AT_FONT_FACE_START, self::T_AT_PAGE_START);
$sImportEndBlockTokens = array(self::T_AT_MEDIA_END, self::T_AT_FONT_FACE_END, self::T_AT_PAGE_END);
$sImportStatementTokens = array(self::T_AT_RULE, self::T_AT_IMPORT);
$sImportMediaEndToken = array(self::T_AT_MEDIA_END);
$sImportImportedFiles = array();
$sRemoveTokens = array_filter(array(self::T_NULL, ($sRemoveComments ? self::T_COMMENT : false)));
/*
* Import @import at-rules.
*
* If the @import at-rule defines one or more media type the imported tokens wil get wrapped into T_AT_MEDIA_START
* and T_AT_MEDIA_END token. @font-face, @media and @page at-rule blocks and at-rule statements will get excluded
* of the wraping.
*
* Additional @media at-rule blocks with media types not defined in the @import at-rule have to get removed.
* Browsers ignore @media at-rule block with media types incompatible to the media types defined in the @import
* at-rule.
*
* Also @import rules require special treatment. If a included @import at-rule has no media type or only the
* "all" media type defined the media type of the @import at-rule will get set to the ones defined in the parent
* @import at-rule. Media types not defined in the parent @import at-rule will get filtered. @import at-rule
* with not matching media types will get removed.
*
* For compression if a @media at-rule block is defined the same media type as the @import at-rule the
* T_AT_MEDIA_START and T_AT_MEDIA_END tokens will get removed.
*/
if ($sImportImports && is_dir($sImportBasePath))
{
$importFile = "";
$importTokens = array();
$importMediaStartToken = array(self::T_NULL);
$importBlocks = array();
for($i = 0, $l = count($tokens); $i < $l; $i++)
{
if ($tokens[$i][0] == self::T_AT_IMPORT && file_exists($sImportBasePath . $tokens[$i][1]))
{
$importFile = $sImportBasePath . $tokens[$i][1];
// Import file already imported; remove this @import at-rule to prevent any recursion
if (in_array($importFile, $sImportImportedFiles))
{
$tokens[$i] = array(self::T_NULL);
}
else
{
$sImportImportedFiles[] = $sImportBasePath . $tokens[$i][1];
$importTokens = self::parse(file_get_contents($importFile));
// The @import at-rule has media types defined requires special handling
if (count($tokens[$i][2]) > 0 && !(count($tokens[$i][2]) == 1 && $tokens[$i][2][0] == "all"))
{
// Create T_AT_MEDIA_START token used for wrapping and array for blocks
$importMediaStartToken = array(self::T_AT_MEDIA_START, $tokens[$i][2]);
$importBlocks = array();
// Filter or set media types of @import at-rule or remove the @import at-rule if no media type is matching the parent @import at-rule
for($ii = 0, $ll = count($importTokens); $ii < $ll; $ii++)
{
if ($importTokens[$ii][0] == self::T_AT_IMPORT)
{
// @import at-rule defines no media type or only the "all" media type; set the media types to the one defined in the parent @import at-rule
if (count($importTokens[$ii][2]) == 0 || (count($importTokens[$ii][2]) == 1 && $importTokens[$ii][2][0]) == "all")
{
$importTokens[$ii][2] = $tokens[$i][2];
}
// @import at-rule defineds one or more media types; filter out media types not matching with the parent @import at-rule
elseif (count($importTokens[$ii][2] > 0))
{
foreach ($importTokens[$ii][2] as $index => $mediaType)
{
if (!in_array($mediaType, $tokens[$i][2]))
{
unset($importTokens[$ii][2][$index]);
}
}
$importTokens[$ii][2] = array_values($importTokens[$ii][2]);
// If there are no media types left in the @import at-rule remove the @import at-rule
if (count($importTokens[$ii][2]) == 0)
{
$importTokens[$ii] = array(self::T_NULL);
}
}
}
}
// Remove media types of @media at-rule block not defined in the @import at-rule
for($ii = 0, $ll = count($importTokens); $ii < $ll; $ii++)
{
if ($importTokens[$ii][0] == self::T_AT_MEDIA_START)
{
foreach ($importTokens[$ii][1] as $index => $mediaType)
{
if (!in_array($mediaType, $tokens[$i][2]))
{
unset($importTokens[$ii][1][$index]);
}
$importTokens[$ii][1] = array_values($importTokens[$ii][1]);
}
}
}
// If no media types left of the @media at-rule block remove the complete block
for($ii = 0, $ll = count($importTokens); $ii < $ll; $ii++)
{
if ($importTokens[$ii][0] == self::T_AT_MEDIA_START)
{
if (count($importTokens[$ii][1]) == 0)
{
for ($iii = $ii; $iii < $ll; $iii++)
{
if ($importTokens[$iii][0] == self::T_AT_MEDIA_END)
{
break;
}
}
if ($importTokens[$iii][0] == self::T_AT_MEDIA_END)
{
array_splice($importTokens, $ii, $iii - $ii + 1, array());
$ll = count($importTokens);
}
}
}
}
// If the media types of the @media at-rule equals the media types defined in the @import at-rule remove the T_AT_MEDIA_START and T_AT_MEDIA_END token
for($ii = 0, $ll = count($importTokens); $ii < $ll; $ii++)
{
if ($importTokens[$ii][0] == self::T_AT_MEDIA_START && count(array_diff($tokens[$i][2], $importTokens[$ii][1])) == 0)
{
for ($iii = $ii; $iii < $ll; $iii++)
{
if ($importTokens[$iii][0] == self::T_AT_MEDIA_END)
{
break;
}
}
if ($importTokens[$iii][0] == self::T_AT_MEDIA_END)
{
unset($importTokens[$ii]);
unset($importTokens[$iii]);
$importTokens = array_values($importTokens);
$ll = count($importTokens);
}
}
}
// Extract @import at-rule tokens
for($ii = 0, $ll = count($importTokens); $ii < $ll; $ii++)
{
if ($importTokens[$ii][0] == self::T_AT_IMPORT)
{
$importBlocks = array_merge($importBlocks, array_splice($importTokens, $ii, 1, array()));
$ll = count($importTokens);
}
}
// Extract T_AT_RULE tokens
for($ii = 0, $ll = count($importTokens); $ii < $ll; $ii++)
{
if ($importTokens[$ii][0] == self::T_AT_RULE)
{
$importBlocks = array_merge($importBlocks, array_splice($importTokens, $ii, 1, array()));
$ll = count($importTokens);
}
}
// Extract the @font-face, @media and @page at-rule block
for($ii = 0, $ll = count($importTokens); $ii < $ll; $ii++)
{
if (in_array($importTokens[$ii][0], $sImportStartBlockTokens))
{
for ($iii = $ii; $iii < $ll; $iii++)
{
if (in_array($importTokens[$iii][0], $sImportEndBlockTokens))
{
break;
}
}
if (isset($importTokens[$iii][0]) && in_array($importTokens[$iii][0], $sImportEndBlockTokens))
{
$importBlocks = array_merge($importBlocks, array_splice($importTokens, $ii, $iii - $ii + 1, array()));
$ll = count($importTokens);
}
}
}
// Create the array with imported tokens for @import at-rules with defined media types
$importTokens = array_merge($importBlocks, array($importMediaStartToken), $importTokens, array($sImportMediaEndToken));
}
array_splice($tokens, $i, 1, $importTokens);
// Modify parameters of the for-loop
$i--;
$l = count($tokens);
}
}
}
}
/*
* Remove tokens.
*
* Remove tokens not required for minification. Defaults to T_NULL and T_COMMENT tokens.
*
* If CSS Level 3 Variables (emulate-css3-variables) is disabled add T_AT_VARIABLES_START, T_VARIABLE_DECLARATION
* and T_AT_VARIABLES_END tokens.
*
* If the configuration options "import-imports" and "import-remove-invalid" is enabled remove also remaining
* T_AT_IMPORT tokens.
*/
if (!$sEmulateCcss3Variables)
{
$sRemoveTokens = array_merge($sRemoveTokens, array(self::T_AT_VARIABLES_START, self::T_VARIABLE_DECLARATION, self::T_AT_VARIABLES_END));
}
if ($sImportImports && is_dir($sImportBasePath) && $sImportRemoveInvalid)
{
$sRemoveTokens[] = self::T_AT_IMPORT;
}
for($i = 0, $l = count($tokens); $i < $l; $i++)
{
if (in_array($tokens[$i][0], $sRemoveTokens))
{
unset($tokens[$i]);
}
}
$tokens = array_values($tokens);
/*
* Remove empty rulesets
*
* The ruleset is empty if it only contains the tokens T_RULESET_START, T_SELECTORS, T_DECLARATIONS_START,
* T_DECLARATIONS_END and T_RULESET_END
*/
if ($sRemoveEmptyRulesets)
{
for($i = 0, $l = count($tokens); $i < $l; $i++)
{
if ($tokens[$i][0] == self::T_RULESET_START && $tokens[$i+4][0] == self::T_RULESET_END)
{
unset($tokens[$i]); // T_RULESET_START
unset($tokens[++$i]); // T_SELECTORS
unset($tokens[++$i]); // T_DECLARATIONS_START
unset($tokens[++$i]); // T_DECLARATIONS_END
unset($tokens[++$i]); // T_RULESET_END
}
}
$tokens = array_values($tokens);
}
/*
* Remove empty @media, @font-face or @page blocks
*/
if ($sRemoveEmptyBlocks)
{
for($i = 0, $l = count($tokens); $i < $l; $i++)
{
if (($tokens[$i][0] == self::T_AT_MEDIA_START && $tokens[$i+1][0] == self::T_AT_MEDIA_END)
|| ($tokens[$i][0] == self::T_AT_FONT_FACE_START && $tokens[$i+1][0] == self::T_AT_FONT_FACE_END)
|| ($tokens[$i][0] == self::T_AT_PAGE_START && $tokens[$i+1][0] == self::T_AT_PAGE_END))
{
unset($tokens[$i]); // T_AT_MEDIA_START, T_AT_FONT_FACE_START, T_AT_PAGE_START
unset($tokens[++$i]); // T_AT_MEDIA_END, T_AT_FONT_FACE_END, T_AT_PAGE_END
}
}
$tokens = array_values($tokens);
}
/*
* Parse CSS Level 3 variables if the configuration option "emulate-css3-variables" is enabled.
*/
if ($sEmulateCcss3Variables)
{
for($i = 0, $l = count($tokens); $i < $l; $i++)
{
// Found a variable declaration
if ($tokens[$i][0] == self::T_VARIABLE_DECLARATION)
{
for($i2 = 0, $l2 = count($tokens[$i][3]); $i2 < $l2; $i2++)
{
// Create the scope (all, screen, print, etc.) if not defined
if (!isset($sCss3Variables[$tokens[$i][3][$i2]]))
{
$sCss3Variables[$tokens[$i][3][$i2]] = array();
}
// Store variable and value
$sCss3Variables[$tokens[$i][3][$i2]][$tokens[$i][1]] = $tokens[$i][2];
}
}
}
}
/*
* Conversion and compression
*/
for($i = 0, $l = count($tokens); $i < $l; $i++)
{
if ($tokens[$i][0] == self::T_DECLARATION)
{
/*
* Search for CSS Level 3 variable statement if the configuration option "emulate-css3-variables" is
* enabled.
*
* The variable value depends on the media type of the declaration. Primary the variable value
* of the media type of the declaration will get used if available. If no variable value for the media
* type of the declaration is defined use the variable value definition for the media type "all".
*/
if ($sEmulateCcss3Variables)
{
// Found a 'var' statement
if (strtolower(substr($tokens[$i][2], 0, 4)) == "var(" && substr($tokens[$i][2], -1, 1) == ")")
{
// Extract the variable name
$variable = trim(substr($tokens[$i][2], 4, -1));
// Append the media type "all" to the declaration
$tokens[$i][3][] = "all";
for($i2 = 0, $l2 = count($tokens[$i][3]); $i2 < $l2; $i2++)
{
// Found a variable value for the current media type scope
if (isset($sCss3Variables[$tokens[$i][3][$i2]][$variable]))
{
$tokens[$i][2] = $sCss3Variables[$tokens[$i][3][$i2]][$variable];
break;
}
}
}
}
/*
* Convert font-weight values if the configuration option "convert-font-weight-values" is enabled.
*
* Will convert font weight values "normal" to "400" and "bold" to "700". Restricted to "font-weight"
* and "font" declarations.
*/
if ($sConvertFontWeightValues && in_array(strtolower($tokens[$i][1]), array("font-weight", "font")) && preg_match($rConvertFontWeightValues, $tokens[$i][2]))
{
$tokens[$i][2] = preg_replace($rConvertFontWeightValues, $rConvertFontWeightValuesR, $tokens[$i][2]);
}
/**
* Compress unit values if the configuration option "compress-unit-values" is enabled.
*
* This will compress:
* 1. "0.5px" to ".5px"
* 2. "0px" to "0"
* 3. "0 0 0 0", "0 0 0" or "0 0" to "0"
*/
if ($sCompressUnitValues)
{
$tokens[$i][2] = preg_replace($rCompressUnitValues1, $rCompressUnitValues1R, $tokens[$i][2]);
$tokens[$i][2] = preg_replace($rCompressUnitValues2, $rCompressUnitValues2R, $tokens[$i][2]);
if (strtolower($tokens[$i][1]) != "background-position")
{
if ($tokens[$i][2] == "0 0 0 0" || $tokens[$i][2] == "0 0 0" || $tokens[$i][2] == "0 0") {$tokens[$i][2] = "0";}
}
}
/*
* Convert RGB color values if the configuration option "convert-rgb-color-values" is enabled.
*
* This will convert values like "rgb(200,60%,5)" to "#c89905".
*/
if ($sConvertRgbColorValues && preg_match($rConvertRgbColorValues, $tokens[$i][2], $m))
{
for ($i2 = 1, $l2 = count($m); $i2 < $l2; $i2++)
{
if (strpos("%", $m[$i2]) !== false)
{
$m[$i2] = substr($m[$i2], 0, -1);
$m[$i2] = (int) (256 * ($m[$i2] / 100));
}
$m[$i2] = str_pad(dechex($m[$i2]), 2, "0", STR_PAD_LEFT);
}
$tokens[$i][2] = str_replace($m[0], "#" . $m[1] . $m[2] . $m[3], $tokens[$i][2]);
}
/**
* Convert HSL color values if the configuration option "convert-hsl-color-values" is enabled.
*
* This will convert values like "hsl(232,36%,48%)" to "#4e5aa7".
*/
if ($sConvertHslColorValues && preg_match($rConvertHslColorValues, $tokens[$i][2], $m))
{
$tokens[$i][2] = str_replace($m[0], self::_hsl2hex($m[1], $m[2], $m[3]), $tokens[$i][2]);
}
/**
* Compress color values if the configuration option "compress-color-values" is enabled.
*
* This will convert color value like "#aabbcc" to their short notation "#abc".
*/
if ($sCompressColorValues && preg_match($rCompressColorValues, $tokens[$i][2], $m))
{
$m[1] = strtolower($m[1]);
if (substr($m[1], 0, 1) == substr($m[1], 1, 1) && substr($m[1], 2, 1) == substr($m[1], 3, 1) && substr($m[1], 4, 1) == substr($m[1], 5, 1))
{
$tokens[$i][2] = str_replace($m[0], "#" . substr($m[1], 0, 1) . substr($m[1], 2, 1) . substr($m[1], 4, 1), $tokens[$i][2]);
}
}
/**
* Convert named color values if the configuration option "convert-named-color-values" is enabled.
*
* This will convert named color value like "black" to their hexadecimal notation "#000".
*/
if ($sConvertNamedColorValues && preg_match($rConvertNamedColorValues, $tokens[$i][2]))
{
$tokens[$i][2] = preg_replace($rConvertNamedColorValues, $rConvertNamedColorValuesR, $tokens[$i][2]);
}
}
}
/*
* Create minified css
*/
$r = "";
for($i = 0, $l = count($tokens); $i < $l; $i++)
{
// T_AT_RULE
if ($tokens[$i][0] == self::T_AT_RULE)
{
$r .= "@" . $tokens[$i][1] . " " . $tokens[$i][2] . ";";
}
// T_AT_IMPORT
if ($tokens[$i][0] == self::T_AT_IMPORT)
{
$r .= "@import \"" . $tokens[$i][1] . "\" " . implode(",", $tokens[$i][2]) . ";";
}
// T_AT_MEDIA_START
elseif ($tokens[$i][0] == self::T_AT_MEDIA_START)
{
if (count($tokens[$i][1]) == 1 && $tokens[$i][1][0] == "all")
{
$r .= "@media{";
}
else
{
$r .= "@media " . implode(",", $tokens[$i][1]) . "{";
}
}
// T_AT_FONT_FACE_START
elseif ($tokens[$i][0] == self::T_AT_FONT_FACE_START)
{
$r .= "@font-face{";
}
// T_FONT_FACE_DECLARATION
elseif ($tokens[$i][0] == self::T_FONT_FACE_DECLARATION)
{
$r .= $tokens[$i][1] . ":" . $tokens[$i][2] . ($sRemoveLastSemicolon && $tokens[$i+1][0] == self::T_AT_FONT_FACE_END ? "" : ";");
}
// T_AT_PAGE_START
elseif ($tokens[$i][0] == self::T_AT_PAGE_START)
{
$r .= "@page{";
}
// T_PAGE_DECLARATION
elseif ($tokens[$i][0] == self::T_PAGE_DECLARATION)
{
$r .= $tokens[$i][1] . ":" . $tokens[$i][2] . ($sRemoveLastSemicolon && $tokens[$i+1][0] == self::T_AT_PAGE_END ? "" : ";");
}
// T_SELECTORS
elseif ($tokens[$i][0] == self::T_SELECTORS)
{
$r .= implode(",", $tokens[$i][1]);
}
// Start of declarations
elseif ($tokens[$i][0] == self::T_DECLARATIONS_START)
{
$r .= "{";
}
// T_DECLARATION
elseif ($tokens[$i][0] == self::T_DECLARATION)
{
// Convert CSS Level 3 and browser specific properties if "convert-css3-properties" is enabled
if ($sConvertCss3Properties && isset(self::$propertyTransformations[$tokens[$i][1]]))
{
foreach (self::$propertyTransformations[$tokens[$i][1]] as $value)
{
if (!is_null($value) && !is_array($value))
{
$r .= $value . ":" . $tokens[$i][2] . ";";
}
elseif (is_array($value) && is_callable($value))
{
$r .= call_user_func_array($value, array($tokens[$i][1], $tokens[$i][2]));
}
}
}
$r .= $tokens[$i][1] . ":" . $tokens[$i][2] . ($sRemoveLastSemicolon && (isset($tokens[$i+1]) &&$tokens[$i+1][0] == self::T_DECLARATIONS_END) ? "" : ";");
}
// T_DECLARATIONS_END, T_AT_MEDIA_END, T_AT_FONT_FACE_END, T_AT_PAGE_END
elseif (in_array($tokens[$i][0], array(self::T_DECLARATIONS_END, self::T_AT_MEDIA_END, self::T_AT_FONT_FACE_END, self::T_AT_PAGE_END)))
{
$r .= "}";
}
elseif ($tokens[$i][0] == self::T_COMMENT)
{
$r .= "\n" . $tokens[$i][1] . "\n";
}
else
{
// Tokens with no output: T_NULL, T_COMMENT, T_RULESET_START, T_RULESET_END, T_AT_VARIABLES_START, T_VARIABLE_DECLARATION and T_AT_VARIABLES_END
}
}
return $r;
}
/**
* Parses the Css and returns an array of tokens.
*
* @param string $css
* @return array Array of tokens
*/
public static function parse($css)
{
/*
* Settings
*/
$sDefaultScope = array("all"); // Default scope
$sDefaultTrim = " \t\n\r\0\x0B"; // Default trim charlist
$sTokenChars = "@{}();:\n\"'/*,"; // Tokens triggering parser processing
$sWhitespaceChars = $sDefaultTrim; // Whitespace chars
/*
* Basic variables
*/
$c = null; // Current char
$p = null; // Previous char
$buffer = ""; // Buffer
$errors = array();
$saveBuffer = ""; // Saved buffer
$state = array(self::T_DOCUMENT); // State stack
$currentState = self::T_DOCUMENT; // Current state
$scope = $sDefaultScope; // Current scope
$stringChar = null; // Current string delimiter char
$isFilterWs = true; // Filter double whitespaces? Will get disabled for comments, selectors, etc.
$selectors = array(); // Array with collected selectors
$importUrl = ""; // @import Url
$line = 1; // Line
$r = array(); // Return value
/*
* Prepare: normalize line endings
*/
$css = str_replace("\r\n", "\n", $css); // Windows to Unix line endings
$css = str_replace("\r", "\n", $css); // Mac to Unix line endings
/**
* Parse:
*/
for ($i = 0, $l = strlen($css); $i < $l; $i++)
{
// Set the current Char
$c = substr($css, $i, 1);
// Increments line number on line endings
if ($c == "\n")
{
$line++;
}
// Whitespace handling
if ($isFilterWs && strpos($sWhitespaceChars, $c) !== false)
{
// Filter double whitespaces if the previous char is also a whitespace
if (strpos($sWhitespaceChars, $p) !== false)
{
continue;
}
// Normalize whitespace chars to space
elseif ($c != " " && strpos($sWhitespaceChars, $c) !== false)
{
$c = " ";
}
}
$buffer .= $c;
// Extended processing only if the current char is a token char
if (strpos($sTokenChars, $c) !== false)
{
// Set the current state
$currentState = $state[count($state) - 1];
/*
* Start of comment
*
* The current buffer will get saved and restored at the end of the comment because comments are
* allowed within many parsable elements.
*/
if ($p == "/" && $c == "*" && $currentState != self::T_STRING && $currentState != self::T_COMMENT)
{
$saveBuffer = substr($buffer, 0, -2); // Save the current buffer
$buffer = $p . $c;
$isFilterWs = false;
array_push($state, self::T_COMMENT);
}
/*
* End of comment
*/
elseif ($p == "*" && $c == "/" && $currentState == self::T_COMMENT)
{
$r[] = array(self::T_COMMENT, trim($buffer));
$buffer = $saveBuffer; // Restore the buffer
$isFilterWs = true;
array_pop($state);
}
/*
* Start of string
*/
elseif (($c == "\"" || $c == "'") && $currentState != self::T_STRING && $currentState != self::T_COMMENT && $currentState != self::T_STRING_URL)
{
$stringChar = $c;
$isFilterWs = false;
array_push($state, self::T_STRING);
}
/**
* Escaped LF in string => remove escape backslash and LF
*/
elseif ($c == "\n" && $p == "\\" && $currentState == self::T_STRING)
{
$buffer = substr($buffer, 0, -2);
}
/**
* Parse error: Unescaped LF in string literal
*/
elseif ($c == "\n" && $p != "\\" && $currentState == self::T_STRING)
{
$errorStart = strrpos($css, "\n", - ($l - strrpos($css, ":", -($l - $i + 2))));
$errorEnd = strpos($css, "\n", $errorStart + 1);
$errorLine = trim(substr($css, $errorStart, $errorEnd - $errorStart));
trigger_error("Line #" . $line . ": Unescaped line ending in string literal:\n<code>" . $errorLine . "_</code>", E_USER_WARNING);
$buffer = substr($buffer, 0, -1) . $stringChar; // Replace the LF with the current string char
$stringChar = null;
$isFilterWs = true;
array_pop($state);
}
/*
* End of string
*/
elseif ($c === $stringChar && $currentState == self::T_STRING)
{
if ($p == "\\") // Previous char is a escape char
{
$count = 1;
$i2 = $i -2;
while (substr($css, $i2, 1) == "\\")
{
$count++;
$i2--;
}
// if count of escape chars is uneven => continue with string...
if ($count % 2)
{
continue;
}
}
// ...else end the string
$isFilterWs = true;
// Special handling for @import url strings
if ($state[count($state) - 2] == self::T_AT_IMPORT)
{
$importUrl = $buffer;
$buffer = "";
}
array_pop($state);
$stringChar = null;
}
/**
* Start of expression string property
*/
elseif ($c == "(" && ($currentState != self::T_COMMENT && $currentState != self::T_STRING && $currentState != self::T_STRING_URL) && strtolower(substr($css, $i - 10, 10) == "expression")
&& ($currentState == self::T_DECLARATION || $currentState == self::T_FONT_FACE_DECLARATION || $currentState == self::T_PAGE_DECLARATION || $currentState == self::T_VARIABLE_DECLARATION))
{
array_push($state, self::T_STRING_EXPRESSION);
}
/**
* End of expression string property
*/
elseif (($c == ";" || $c == "}") && $p == ")" && $currentState == self::T_STRING_EXPRESSION)
{
$buffer = substr($buffer, 0, -2);
array_pop($state);
$i = $i - 2;
}
/**
* Start of url string property
*/
elseif ($c == "(" && ($currentState != self::T_COMMENT && $currentState != self::T_STRING && $currentState != self::T_STRING_EXPRESSION) && strtolower(substr($css, $i - 3, 3) == "url")
&& ($currentState == self::T_DECLARATION || $currentState == self::T_FONT_FACE_DECLARATION || $currentState == self::T_PAGE_DECLARATION || $currentState == self::T_VARIABLE_DECLARATION || $currentState == self::T_AT_IMPORT))
{
array_push($state, self::T_STRING_URL);
}
/**
* End of url string property
*/
elseif (($c == ")" || $c == "\n") && $currentState == self::T_STRING_URL)
{
if ($p == "\\")
{
continue;
}
// Special handling for @import urls
if ($state[count($state) - 2] == self::T_AT_IMPORT)
{
$importUrl = $buffer;
$buffer = "";
}
array_pop($state);
}
/*
* Start of at-rule @media block
*/
elseif ($c == "@" && $currentState == self::T_DOCUMENT && strtolower(substr($css, $i, 6)) == "@media")
{
$i = $i + 6;
$buffer = "";
array_push($state, self::T_AT_MEDIA_START);
}
/*
* At-rule @media block media types
*/
elseif ($c == "{" && $currentState == self::T_AT_MEDIA_START)
{
$buffer = strtolower(trim($buffer, $sDefaultTrim . "{"));
$scope = $buffer != "" ? array_filter(array_map("trim", explode(",", $buffer))) : $sDefaultScope;
$r[] = array(self::T_AT_MEDIA_START, $scope);
$i = $i++;
$buffer = "";
array_pop($state);
array_push($state, self::T_AT_MEDIA);
}
/*
* End of at-rule @media block
*/
elseif ($currentState == self::T_AT_MEDIA && $c == "}")
{
$r[] = array(self::T_AT_MEDIA_END);
$scope = $sDefaultScope;
$buffer = "";
array_pop($state);
}
/*
* Start of at-rule @font-face block
*/
elseif ($c == "@" && $currentState == self::T_DOCUMENT && strtolower(substr($css, $i, 10)) == "@font-face")
{
$r[] = array(self::T_AT_FONT_FACE_START);
$i = $i + 10;
$buffer = "";
array_push($state, self::T_AT_FONT_FACE);
}
/*
* @font-face declaration: Property
*/
elseif ($c == ":" && $currentState == self::T_AT_FONT_FACE)
{
$property = trim($buffer, $sDefaultTrim . ":{");
$buffer = "";
array_push($state, self::T_FONT_FACE_DECLARATION);
}
/*
* @font-face declaration: Value
*/
elseif (($c == ";" || $c == "}") && $currentState == self::T_FONT_FACE_DECLARATION)
{
$value = trim($buffer, $sDefaultTrim . ";}");
$r[] = array(self::T_FONT_FACE_DECLARATION, $property, $value, $scope);
$buffer = "";
array_pop($state);
if ($c == "}") // @font-face declaration closed with a right curly brace => closes @font-face block
{
array_pop($state);
$r[] = array(self::T_AT_FONT_FACE_END);
}
}
/*
* Parse error: @font-face declaration value
*/
elseif ($c == ":" && $currentState == self::T_FONT_FACE_DECLARATION)
{
$errorStart = strrpos($css, "\n", -($l - strrpos($css, ":", -($l - $i + 2))));
$errorEnd = strpos($css, "\n", $errorStart + 1);
$errorLine = trim(substr($css, $errorStart, $errorEnd - $errorStart));
trigger_error("Line #" . $line . ": Unterminated @font-face declaration:\n<code>" . $errorLine . "_</code>", E_USER_WARNING);
}
/*
* End of at-rule @font-face block
*/
elseif ($c == "}" && $currentState == self::T_AT_FONT_FACE)
{
$r[] = array(self::T_AT_FONT_FACE_END);
$buffer = "";
array_pop($state);
}
/*
* Start of at-rule @page block
*/
elseif ($c == "@" && $currentState == self::T_DOCUMENT && strtolower(substr($css, $i, 5)) == "@page")
{
$r[] = array(self::T_AT_PAGE_START);
$i = $i + 5;
$buffer = "";
array_push($state, self::T_AT_PAGE);
}
/*
* @page declaration: Property
*/
elseif ($c == ":" && $currentState == self::T_AT_PAGE)
{
$property = trim($buffer, $sDefaultTrim . ":{");
$buffer = "";
array_push($state, self::T_PAGE_DECLARATION);
}
/*
* @page declaration: Value
*/
elseif (($c == ";" || $c == "}") && $currentState == self::T_PAGE_DECLARATION)
{
$value = trim($buffer, $sDefaultTrim . ";}");
$r[] = array(self::T_PAGE_DECLARATION, $property, $value, $scope);
$buffer = "";
array_pop($state);
if ($c == "}") // @page declaration closed with a right curly brace => closes @page block
{
array_pop($state);
$r[] = array(self::T_AT_PAGE_END);
}
}
/*
*
*/
elseif ($c == ":" && $currentState == self::T_PAGE_DECLARATION)
{
$errorStart = strrpos($css, "\n", -($l - strrpos($css, ":", -($l - $i + 2))));
$errorEnd = strpos($css, "\n", $errorStart + 1);
$errorLine = trim(substr($css, $errorStart, $errorEnd - $errorStart));
trigger_error("Line #" . $line . ": Unterminated @page declaration:\n<code>" . $errorLine . "_</code>", E_USER_WARNING);
}
/*
* End of at-rule @page block
*/
elseif ($c == "}" && $currentState == self::T_AT_PAGE)
{
$r[] = array(self::T_AT_PAGE_END);
$buffer = "";
array_pop($state);
}
/*
* Start of at-rule @variables block
*/
elseif ($c == "@" && $currentState == self::T_DOCUMENT && strtolower(substr($css, $i, 10)) == "@variables")
{
$i = $i + 10;
$buffer = "";
array_push($state, self::T_AT_VARIABLES_START);
}
/*
* @variables media types
*/
elseif ($c == "{" && $currentState == self::T_AT_VARIABLES_START)
{
$buffer = strtolower(trim($buffer, $sDefaultTrim . "{"));
$r[] = array(self::T_AT_VARIABLES_START, $scope);
$scope = $buffer != "" ? array_filter(array_map("trim", explode(",", $buffer))) : $sDefaultScope;
$i = $i++;
$buffer = "";
array_pop($state);
array_push($state, self::T_AT_VARIABLES);
}
/*
* @variables declaration: Property
*/
elseif ($c == ":" && $currentState == self::T_AT_VARIABLES)
{
$property = trim($buffer, $sDefaultTrim . ":");
$buffer = "";
array_push($state, self::T_VARIABLE_DECLARATION);
}
/*
* @variables declaration: Value
*/
elseif (($c == ";" || $c == "}") && $currentState == self::T_VARIABLE_DECLARATION)
{
$value = trim($buffer, $sDefaultTrim . ";}");
$r[] = array(self::T_VARIABLE_DECLARATION, $property, $value, $scope);
$buffer = "";
array_pop($state);
if ($c == "}") // @variable declaration closed with a right curly brace => closes @variables block
{
array_pop($state);
$r[] = array(self::T_AT_VARIABLES_END);
$scope = $sDefaultScope;
}
}
/*
* Parse error: @variable declaration value
*/
elseif ($c == ":" && $currentState == self::T_VARIABLE_DECLARATION)
{
$errorStart = strrpos($css, "\n", -($l - strrpos($css, ":", -($l - $i + 2))));
$errorEnd = strpos($css, "\n", $errorStart + 1);
$errorLine = trim(substr($css, $errorStart, $errorEnd - $errorStart));
trigger_error("Line #" . $line . ": Unterminated @variable declaration:\n<code>" . $errorLine . "_</code>", E_USER_WARNING);
}
/*
* End of at-rule @variables block
*/
elseif ($c == "}" && $currentState == self::T_AT_VARIABLES)
{
$r[] = array(self::T_AT_VARIABLES_END);
$scope = $sDefaultScope;
$buffer = "";
array_pop($state);
}
/*
* Start of at-rule @import
*/
elseif ($c == "@" && $currentState == self::T_DOCUMENT && strtolower(substr($css, $i, 7)) == "@import")
{
$i = $i + 7;
$buffer = "";
array_push($state, self::T_AT_IMPORT);
}
/*
* End of at-rule @import
*/
elseif (($c == ";" || $c == "\n") && $currentState == self::T_AT_IMPORT)
{
$scopes = array_filter(array_map("trim", explode(",", strtolower(trim($buffer, $sDefaultTrim . ";")))));
if (stripos($importUrl, "url(") !== false)
{
$importUrl = rtrim(substr($importUrl, 4), $sDefaultTrim . ")");
}
$importUrl = trim($importUrl, $sDefaultTrim . "\"'");
$r[] = array(self::T_AT_IMPORT, $importUrl, $scopes);
$buffer = "";
array_pop($state);
}
/*
* Start of document level at-rule
*/
elseif ($c == "@" && $currentState == self::T_DOCUMENT)
{
$buffer = "";
array_push($state, self::T_AT_RULE);
}
/*
* End of document level at-rule
*/
elseif ($c == ";" && $currentState == self::T_AT_RULE)
{
$pos = strpos($buffer, " ");
$rule = substr($buffer, 0, $pos);
$value = trim(substr($buffer, $pos), $sDefaultTrim . ";");
$r[] = array(self::T_AT_RULE, $rule, $value);
$buffer = "";
array_pop($state);
}
/**
* Selector
*/
elseif ($c == "," && ($currentState == self::T_AT_MEDIA || $currentState == self::T_DOCUMENT))
{
$selectors[]= trim($buffer, $sDefaultTrim . ",");
$buffer = "";
}
/*
* Start of ruleset
*/
elseif ($c == "{" && ($currentState == self::T_AT_MEDIA || $currentState == self::T_DOCUMENT))
{
$selectors[]= trim($buffer, $sDefaultTrim . "{");
$selectors = array_filter(array_map("trim", $selectors));
$r[] = array(self::T_RULESET_START);
$r[] = array(self::T_SELECTORS, $selectors);
$r[] = array(self::T_DECLARATIONS_START);
$buffer = "";
$selectors = array();
array_push($state, self::T_DECLARATIONS);
}
/*
* Declaration: Property
*/
elseif ($c == ":" && $currentState == self::T_DECLARATIONS)
{
$property = trim($buffer, $sDefaultTrim . ":;");
$buffer = "";
array_push($state, self::T_DECLARATION);
}
/*
* Declaration: Value
*/
elseif (($c == ";" || $c == "}") && $currentState == self::T_DECLARATION)
{
$value = trim($buffer, $sDefaultTrim . ";}");
$r[] = array(self::T_DECLARATION, $property, $value, $scope);
$buffer = "";
array_pop($state);
if ($c == "}") // declaration closed with a right curly brace => close ruleset
{
array_pop($state);
$r[] = array(self::T_DECLARATIONS_END);
$r[] = array(self::T_RULESET_END);
}
}
/*
* Parse error: declaration value
*/
elseif ($c == ":" && $currentState == self::T_DECLARATION)
{
// Fix for Internet Explorer declaration filter as the declaration value conrains a colon (Ex.: progid:DXImageTransform.Microsoft.Alpha(Opacity=85);)
if (strpos(strtolower($property), "filter") !== false && strtolower(trim($buffer)) == "progid:")
{
continue;
}
$errorStart = strrpos($css, "\n", -($l - strrpos($css, ":", -($l - $i + 2))));
$errorEnd = strpos($css, "\n", $errorStart + 1);
$errorLine = trim(substr($css, $errorStart, $errorEnd - $errorStart));
trigger_error("Line #" . $line . ": Unterminated declaration:\n<code>" . $errorLine . "_</code>", E_USER_WARNING);
}
/*
* End of ruleset
*/
elseif ($c == "}" && $currentState == self::T_DECLARATIONS)
{
$r[] = array(self::T_DECLARATIONS_END);
$r[] = array(self::T_RULESET_END);
$buffer = "";
array_pop($state);
}
}
$p = $c; // Set the parent char
}
return $r;
}
/**
* Transforms "opacity: {value}" into browser specific counterparts.
*
* @param string $property Property
* @param string $value Value
* @return string
*/
private static function _opacityTransformation($property, $value)
{
// Calculate the value for Internet Explorer filter statement
$ieValue = (int) ((float) $value * 100);
$r = "-moz-opacity:" . $value . ";"; // Firefox < 3.5
$r .= "-ms-filter: \"alpha(opacity=" . $ieValue . ")\";"; // Internet Explorer 8
$r .= "filter: alpha(opacity=" . $ieValue . ");zoom:1;"; // Internet Explorer 4 - 7
return $r;
}
/**
* Transforms "white-space: pre-wrap" into browser specific counterparts.
*
* @param string $property Property
* @param string $value Value
* @return string
*/
private static function _whiteSpacePreWrapTransformation($property, $value)
{
if (strtolower($value) == "pre-wrap")
{
$r = "white-space:-moz-pre-wrap;"; // Mozilla
$r .= "white-space:-webkit-pre-wrap;"; // Webkit
$r .= "white-space:-pre-wrap;"; // Opera 4 - 6
$r .= "white-space:-o-pre-wrap;"; // Opera 7+
$r .= "word-wrap:break-word;"; // Internet Explorer 5.5+
return $r;
}
else
{
return "";
}
}
/**
* Convert a HSL value to hexadecimal notation.
*
* Based on: {@link http://www.easyrgb.com/index.php?X=MATH&H=19#text19}.
*
* @param integer $hue Hue
* @param integer $saturation Saturation
* @param integer $lightness Lightnesss
* @return string
*/
private static function _hsl2hex($hue, $saturation, $lightness)
{
$hue = $hue / 360;
$saturation = $saturation / 100;
$lightness = $lightness / 100;
if ($saturation == 0)
{
$red = $lightness * 255;
$green = $lightness * 255;
$blue = $lightness * 255;
}
else
{
if ($lightness < 0.5 )
{
$v2 = $lightness * (1 + $saturation);
}
else
{
$v2 = ($lightness + $saturation) - ($saturation * $lightness);
}
$v1 = 2 * $lightness - $v2;
$red = 255 * self::_hue2rgb($v1, $v2, $hue + (1 / 3));
$green = 255 * self::_hue2rgb($v1, $v2, $hue);
$blue = 255 * self::_hue2rgb($v1, $v2, $hue - (1 / 3));
}
return "#" . str_pad(dechex(round($red)), 2, "0", STR_PAD_LEFT) . str_pad(dechex(round($green)), 2, "0", STR_PAD_LEFT) . str_pad(dechex(round($blue)), 2, "0", STR_PAD_LEFT);
}
/**
* Apply hue to a rgb color value.
*
* @param integer $v1 Value 1
* @param integer $v2 Value 2
* @param integer $hue Hue
* @return integer
*/
private static function _hue2rgb($v1, $v2, $hue)
{
if ($hue < 0)
{
$hue += 1;
}
if ($hue > 1)
{
$hue -= 1;
}
if ((6 * $hue) < 1)
{
return ($v1 + ($v2 - $v1) * 6 * $hue);
}
if ((2 * $hue) < 1)
{
return ($v2);
}
if ((3 * $hue) < 2)
{
return ($v1 + ($v2 - $v1) * (( 2 / 3) - $hue) * 6);
}
return $v1;
}
}
?>
@ProLoser
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Heh good idea.

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