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// Copyright (c) 2011 Chan Wai Shing
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
package syntaxhighlighter.brush;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.regex.Pattern;

/**
 * Sass brush.
 * @author Chan Wai Shing 
 */
public class BrushSass extends Brush {

  public BrushSass() {
    super();

    String keywords = "ascent azimuth background-attachment background-color background-image background-position "
            + "background-repeat background baseline bbox border-collapse border-color border-spacing border-style border-top "
            + "border-right border-bottom border-left border-top-color border-right-color border-bottom-color border-left-color "
            + "border-top-style border-right-style border-bottom-style border-left-style border-top-width border-right-width "
            + "border-bottom-width border-left-width border-width border bottom cap-height caption-side centerline clear clip color "
            + "content counter-increment counter-reset cue-after cue-before cue cursor definition-src descent direction display "
            + "elevation empty-cells float font-size-adjust font-family font-size font-stretch font-style font-variant font-weight font "
            + "height left letter-spacing line-height list-style-image list-style-position list-style-type list-style margin-top "
            + "margin-right margin-bottom margin-left margin marker-offset marks mathline max-height max-width min-height min-width orphans "
            + "outline-color outline-style outline-width outline overflow padding-top padding-right padding-bottom padding-left padding page "
            + "page-break-after page-break-before page-break-inside pause pause-after pause-before pitch pitch-range play-during position "
            + "quotes right richness size slope src speak-header speak-numeral speak-punctuation speak speech-rate stemh stemv stress "
            + "table-layout text-align top text-decoration text-indent text-shadow text-transform unicode-bidi unicode-range units-per-em "
            + "vertical-align visibility voice-family volume white-space widows width widths word-spacing x-height z-index zoom";
    String values = "above absolute all always aqua armenian attr aural auto avoid baseline behind below bidi-override black blink block blue bold bolder "
            + "both bottom braille capitalize caption center center-left center-right circle close-quote code collapse compact condensed "
            + "continuous counter counters crop cross crosshair cursive dashed decimal decimal-leading-zero digits disc dotted double "
            + "embed embossed e-resize expanded extra-condensed extra-expanded fantasy far-left far-right fast faster fixed format fuchsia "
            + "gray green groove handheld hebrew help hidden hide high higher icon inline-table inline inset inside invert italic "
            + "justify landscape large larger left-side left leftwards level lighter lime line-through list-item local loud lower-alpha "
            + "lowercase lower-greek lower-latin lower-roman lower low ltr marker maroon medium message-box middle mix move narrower "
            + "navy ne-resize no-close-quote none no-open-quote no-repeat normal nowrap n-resize nw-resize oblique olive once open-quote outset "
            + "outside overline pointer portrait pre print projection purple red relative repeat repeat-x repeat-y rgb ridge right right-side "
            + "rightwards rtl run-in screen scroll semi-condensed semi-expanded separate se-resize show silent silver slower slow "
            + "small small-caps small-caption smaller soft solid speech spell-out square s-resize static status-bar sub super sw-resize "
            + "table-caption table-cell table-column table-column-group table-footer-group table-header-group table-row table-row-group teal "
            + "text-bottom text-top thick thin top transparent tty tv ultra-condensed ultra-expanded underline upper-alpha uppercase upper-latin "
            + "upper-roman url visible wait white wider w-resize x-fast x-high x-large x-loud x-low x-slow x-small x-soft xx-large xx-small yellow";
    String fonts = "[mM]onospace [tT]ahoma [vV]erdana [aA]rial [hH]elvetica [sS]ans-serif [sS]erif [cC]ourier mono sans serif";
    String statements = "!important !default";
    String preprocessors = "import extend debug warn if for while mixin include";

    List _regExpRuleList = new ArrayList();
    _regExpRuleList.add(new RegExpRule(RegExpRule.multiLineCComments, "comments")); // multiline comments
    _regExpRuleList.add(new RegExpRule(RegExpRule.singleLineCComments, "comments")); // singleline comments
    _regExpRuleList.add(new RegExpRule(RegExpRule.doubleQuotedString, "string")); // double quoted strings
    _regExpRuleList.add(new RegExpRule(RegExpRule.singleQuotedString, "string")); // single quoted strings
    _regExpRuleList.add(new RegExpRule("\\#[a-fA-F0-9]{3,6}", "value")); // html colors
    _regExpRuleList.add(new RegExpRule("\\b(-?\\d+)(\\.\\d+)?(px|em|pt|\\:|\\%|)\\b", "value")); // sizes
    _regExpRuleList.add(new RegExpRule("(\\$|!)\\w+", "variable")); // variables
    _regExpRuleList.add(new RegExpRule(getKeywords(statements), "color3")); // statements
    _regExpRuleList.add(new RegExpRule(getKeywordsPrependedBy(preprocessors, "@"), "preprocessor")); // preprocessor
    _regExpRuleList.add(new RegExpRule("(^|\\n)\\s*=.*", "functions")); // short mixin declarations
    _regExpRuleList.add(new RegExpRule("(^|\\n)\\s*\\+.*", "functions")); // short mixin call
    _regExpRuleList.add(new RegExpRule("&", "keyword")); // &
    _regExpRuleList.add(new RegExpRule("#(\\w|-|_)+", "color2")); // ids
    // original code uses 'color4' which do not exist yet, here uses color1 as a temporary replacement
    _regExpRuleList.add(new RegExpRule("(\\.(\\w|-|_)+)", "color1")); // classes
    _regExpRuleList.add(new RegExpRule(getKeywordsCSS(keywords), Pattern.MULTILINE, "keyword")); // keywords
    _regExpRuleList.add(new RegExpRule(getKeywordsPrependedBy(keywords, ":"), "keyword")); // :keyword value
    _regExpRuleList.add(new RegExpRule(getValuesCSS(values), "value")); // values
    _regExpRuleList.add(new RegExpRule(getKeywords(fonts), "color1")); // fonts
    setRegExpRuleList(_regExpRuleList);

    setCommonFileExtensionList(Arrays.asList("sass", "scss"));
  }

  protected static String getKeywordsCSS(String str) {
    return "\\b([a-z_]|)" + str.replaceAll("\\s", "(?=:)\\\\b|\\\\b([a-z_\\\\*]|\\\\*|)") + "(?=:)\\b";
  }

  protected static String getValuesCSS(String str) {
    return "\\b" + str.replaceAll("\\s", "(?!-)(?!:)\\\\b|\\\\b()") + ":\\b";
  }

  protected static String getKeywordsPrependedBy(String keywords, String by) {
    return "(?:" + by + "\\b" + keywords.replaceAll("^\\s+|\\s+$", "").replaceAll("\\s+", "|" + by + "\\b").replaceAll("^\\s+|\\s+$", "") + ")\\b";
  }
}