cssutil.js

/**
 * cssutil.js
 * Author: Hiroyoshi Kurohara
 * AUthor email: kurohara@yk.rim.or.jp
 *
 */
//var self = {};
(function() {
  if (self.Qst === undefined) {
    self.Qst = {};
  }
  self.Qst.CSSUtil = {};

  function searchsymbol(text, search, istart, iend) {
    var state = '';
    var len = text.length;
    var i = istart === undefined ? 0 : istart;
    var to = iend === undefined ? len : iend + 1;
    for (; i < to; ++i) {
      var c = text.charAt(i);
      switch (state) {
        case '':
          if (c === '\\') {
            state = 'e';
          } else if (c === '"') {
            state = 'dq';
          } else if (c === "'") {
            state = 'sq';
          } else if (c === "/") {
            state = 'sl';
          } else if (c === search) {
            return i;
          }
          break;
        case 'dq':
          if (c === '\\') {
            state = 'e';
          } else if (c === '"') {
            state = '';
          }
          break;
        case 'sq':
          if (c === '\\') {
            state = 'e';
          } else if (c === "'") {
            state = '';
          }
          break;
        case 'e':
          state = '';
          break;
        case 'sl':
          if (c === '\\') {
            state = 'e';
          } else if (c === '*') {
            state = 'c';
          } else {
            state = '';
          }
          break;
        case 'c':
          if (c === '\\') {
            state = 'ce';
          } else if (c === '*') {
            state = 'as';
          }
          break;
        case 'ce':
          state = 'c';
          break;
        case 'as':
          if (c === '\\') {
            state = 'ce';
          } else if (c === '/') {
            state = '';
          } else {
            state = 'c';
          }
          break;
        default:
          break;
      }
    }
    return undefined;
  }

  function styletop(csstext, start) {
    return searchsymbol(csstext, '{', start);
  }

  function styleend(csstext, start) {
    return searchsymbol(csstext, '}', start) + 1;
  }

  self.Qst.CSSUtil = {
    split: function(csstext) {
      var src = csstext;
      var cssrules = [];
      for (;;) {
        var istart = styletop(src);
        if (istart === undefined) {
          break;
        }
        var selectorstr = src.substring(0, istart);
        var rule = {};
        rule.selectors = selectorstr.split(",");
        var iend = styleend(src, istart);
        rule.styletext = src.substring(istart, iend);
        cssrules.push(rule);
        src = src.substring(iend);
      }
      return cssrules;
    },
    embrace: function(cssrules, outer) {
      var embraced = [];
      for (var i in cssrules) {
        var selectors = cssrules[i].selectors;
        var newselectors = [];
        for (var j in selectors) {
          newselectors.push(outer + " " + selectors[j]);
        }
        embraced.push({
          selectors: newselectors,
          styletext: cssrules[i].styletext
        });
      }
      return embraced;
    },
    join: function(cssrules) {
      var joined = [];
      for (var i in cssrules) {
        var cssstring = cssrules[i].selectors.join(",") + " " + cssrules[i].styletext;
        joined.push(cssstring);
      }
      return joined;
    },
  };
})();

// var u = self.Qst.CSSUtil;
// var csstext = ".qstnr-propsheet button, .qstnr-propsheet input {" +
//     "    border: 2px outset buttonface;"+
//     "    padding:4px;"+
//     "    border-radius: 3px;"+
//     "    background-color: white;"+
//     "    vertical-align: top;"+
//     "}"+
//     ".qstnr-additem {"+
//     "    margin: 10px 0;/* abc } \\*/ *\\/ */"+
//     "}"+
//     ""+
//     ".qstnr-propsheet-title {"+
//     "    "+
//     "}"+
//     "div.loading {"+
//     "    background-image: url('ajax-loader.gif');"+
//     "    background-repeat: no-repeat;"+
//     "    background-position: center;"+
//     "}";

// var cssrules = u.split(csstext);
// console.log(cssrules);

// newrules = u.embrace(cssrules, "body");

// console.log(newrules);

// console.log(u.join(newrules));