css-font-face-src/dist/css-font-face-src.js

A CSS @font-face src property value parser

(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.cssFontFaceSrc = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(_dereq_,module,exports){
/*
 * Generated by PEG.js 0.10.0.
 *
 * http://pegjs.org/
 */

"use strict";

function peg$subclass(child, parent) {
  function ctor() { this.constructor = child; }
  ctor.prototype = parent.prototype;
  child.prototype = new ctor();
}

function peg$SyntaxError(message, expected, found, location) {
  this.message  = message;
  this.expected = expected;
  this.found    = found;
  this.location = location;
  this.name     = "SyntaxError";

  if (typeof Error.captureStackTrace === "function") {
    Error.captureStackTrace(this, peg$SyntaxError);
  }
}

peg$subclass(peg$SyntaxError, Error);

peg$SyntaxError.buildMessage = function(expected, found) {
  var DESCRIBE_EXPECTATION_FNS = {
        literal: function(expectation) {
          return "\"" + literalEscape(expectation.text) + "\"";
        },

        "class": function(expectation) {
          var escapedParts = "",
              i;

          for (i = 0; i < expectation.parts.length; i++) {
            escapedParts += expectation.parts[i] instanceof Array
              ? classEscape(expectation.parts[i][0]) + "-" + classEscape(expectation.parts[i][1])
              : classEscape(expectation.parts[i]);
          }

          return "[" + (expectation.inverted ? "^" : "") + escapedParts + "]";
        },

        any: function(expectation) {
          return "any character";
        },

        end: function(expectation) {
          return "end of input";
        },

        other: function(expectation) {
          return expectation.description;
        }
      };

  function hex(ch) {
    return ch.charCodeAt(0).toString(16).toUpperCase();
  }

  function literalEscape(s) {
    return s
      .replace(/\\/g, '\\\\')
      .replace(/"/g,  '\\"')
      .replace(/\0/g, '\\0')
      .replace(/\t/g, '\\t')
      .replace(/\n/g, '\\n')
      .replace(/\r/g, '\\r')
      .replace(/[\x00-\x0F]/g,          function(ch) { return '\\x0' + hex(ch); })
      .replace(/[\x10-\x1F\x7F-\x9F]/g, function(ch) { return '\\x'  + hex(ch); });
  }

  function classEscape(s) {
    return s
      .replace(/\\/g, '\\\\')
      .replace(/\]/g, '\\]')
      .replace(/\^/g, '\\^')
      .replace(/-/g,  '\\-')
      .replace(/\0/g, '\\0')
      .replace(/\t/g, '\\t')
      .replace(/\n/g, '\\n')
      .replace(/\r/g, '\\r')
      .replace(/[\x00-\x0F]/g,          function(ch) { return '\\x0' + hex(ch); })
      .replace(/[\x10-\x1F\x7F-\x9F]/g, function(ch) { return '\\x'  + hex(ch); });
  }

  function describeExpectation(expectation) {
    return DESCRIBE_EXPECTATION_FNS[expectation.type](expectation);
  }

  function describeExpected(expected) {
    var descriptions = new Array(expected.length),
        i, j;

    for (i = 0; i < expected.length; i++) {
      descriptions[i] = describeExpectation(expected[i]);
    }

    descriptions.sort();

    if (descriptions.length > 0) {
      for (i = 1, j = 1; i < descriptions.length; i++) {
        if (descriptions[i - 1] !== descriptions[i]) {
          descriptions[j] = descriptions[i];
          j++;
        }
      }
      descriptions.length = j;
    }

    switch (descriptions.length) {
      case 1:
        return descriptions[0];

      case 2:
        return descriptions[0] + " or " + descriptions[1];

      default:
        return descriptions.slice(0, -1).join(", ")
          + ", or "
          + descriptions[descriptions.length - 1];
    }
  }

  function describeFound(found) {
    return found ? "\"" + literalEscape(found) + "\"" : "end of input";
  }

  return "Expected " + describeExpected(expected) + " but " + describeFound(found) + " found.";
};

function peg$parse(input, options) {
  options = options !== void 0 ? options : {};

  var peg$FAILED = {},

      peg$startRuleFunctions = { start: peg$parsestart },
      peg$startRuleFunction  = peg$parsestart,

      peg$c0 = "",
      peg$c1 = function() { return [] },
      peg$c2 = ",",
      peg$c3 = peg$literalExpectation(",", false),
      peg$c4 = function(x, xs) { return [x].concat(xs); },
      peg$c5 = function(entry) { return [entry]; },
      peg$c6 = function(url, format) { return {url: url, format: format}; },
      peg$c7 = function(url) { return {url: url}; },
      peg$c8 = "url(",
      peg$c9 = peg$literalExpectation("url(", false),
      peg$c10 = ")",
      peg$c11 = peg$literalExpectation(")", false),
      peg$c12 = function(value) { return value; },
      peg$c13 = "format(",
      peg$c14 = peg$literalExpectation("format(", false),
      peg$c15 = "local(",
      peg$c16 = peg$literalExpectation("local(", false),
      peg$c17 = function(value) { return {local: value}; },
      peg$c18 = /^[^)]/,
      peg$c19 = peg$classExpectation([")"], true, false),
      peg$c20 = function(chars) { return util.extractValue(chars.join("")); },
      peg$c21 = /^[ \t\r\n\f]/,
      peg$c22 = peg$classExpectation([" ", "\t", "\r", "\n", "\f"], false, false),

      peg$currPos          = 0,
      peg$savedPos         = 0,
      peg$posDetailsCache  = [{ line: 1, column: 1 }],
      peg$maxFailPos       = 0,
      peg$maxFailExpected  = [],
      peg$silentFails      = 0,

      peg$result;

  if ("startRule" in options) {
    if (!(options.startRule in peg$startRuleFunctions)) {
      throw new Error("Can't start parsing from rule \"" + options.startRule + "\".");
    }

    peg$startRuleFunction = peg$startRuleFunctions[options.startRule];
  }

  function text() {
    return input.substring(peg$savedPos, peg$currPos);
  }

  function location() {
    return peg$computeLocation(peg$savedPos, peg$currPos);
  }

  function expected(description, location) {
    location = location !== void 0 ? location : peg$computeLocation(peg$savedPos, peg$currPos)

    throw peg$buildStructuredError(
      [peg$otherExpectation(description)],
      input.substring(peg$savedPos, peg$currPos),
      location
    );
  }

  function error(message, location) {
    location = location !== void 0 ? location : peg$computeLocation(peg$savedPos, peg$currPos)

    throw peg$buildSimpleError(message, location);
  }

  function peg$literalExpectation(text, ignoreCase) {
    return { type: "literal", text: text, ignoreCase: ignoreCase };
  }

  function peg$classExpectation(parts, inverted, ignoreCase) {
    return { type: "class", parts: parts, inverted: inverted, ignoreCase: ignoreCase };
  }

  function peg$anyExpectation() {
    return { type: "any" };
  }

  function peg$endExpectation() {
    return { type: "end" };
  }

  function peg$otherExpectation(description) {
    return { type: "other", description: description };
  }

  function peg$computePosDetails(pos) {
    var details = peg$posDetailsCache[pos], p;

    if (details) {
      return details;
    } else {
      p = pos - 1;
      while (!peg$posDetailsCache[p]) {
        p--;
      }

      details = peg$posDetailsCache[p];
      details = {
        line:   details.line,
        column: details.column
      };

      while (p < pos) {
        if (input.charCodeAt(p) === 10) {
          details.line++;
          details.column = 1;
        } else {
          details.column++;
        }

        p++;
      }

      peg$posDetailsCache[pos] = details;
      return details;
    }
  }

  function peg$computeLocation(startPos, endPos) {
    var startPosDetails = peg$computePosDetails(startPos),
        endPosDetails   = peg$computePosDetails(endPos);

    return {
      start: {
        offset: startPos,
        line:   startPosDetails.line,
        column: startPosDetails.column
      },
      end: {
        offset: endPos,
        line:   endPosDetails.line,
        column: endPosDetails.column
      }
    };
  }

  function peg$fail(expected) {
    if (peg$currPos < peg$maxFailPos) { return; }

    if (peg$currPos > peg$maxFailPos) {
      peg$maxFailPos = peg$currPos;
      peg$maxFailExpected = [];
    }

    peg$maxFailExpected.push(expected);
  }

  function peg$buildSimpleError(message, location) {
    return new peg$SyntaxError(message, null, null, location);
  }

  function peg$buildStructuredError(expected, found, location) {
    return new peg$SyntaxError(
      peg$SyntaxError.buildMessage(expected, found),
      expected,
      found,
      location
    );
  }

  function peg$parsestart() {
    var s0, s1;

    s0 = peg$parsesourceEntries();
    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = peg$c0;
      if (s1 !== peg$FAILED) {
        peg$savedPos = s0;
        s1 = peg$c1();
      }
      s0 = s1;
    }

    return s0;
  }

  function peg$parsesourceEntries() {
    var s0, s1, s2, s3, s4, s5;

    s0 = peg$currPos;
    s1 = peg$parsesourceEntry();
    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$parsewhitespace();
      while (s3 !== peg$FAILED) {
        s2.push(s3);
        s3 = peg$parsewhitespace();
      }
      if (s2 !== peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 44) {
          s3 = peg$c2;
          peg$currPos++;
        } else {
          s3 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c3); }
        }
        if (s3 !== peg$FAILED) {
          s4 = [];
          s5 = peg$parsewhitespace();
          while (s5 !== peg$FAILED) {
            s4.push(s5);
            s5 = peg$parsewhitespace();
          }
          if (s4 !== peg$FAILED) {
            s5 = peg$parsesourceEntries();
            if (s5 !== peg$FAILED) {
              peg$savedPos = s0;
              s1 = peg$c4(s1, s5);
              s0 = s1;
            } else {
              peg$currPos = s0;
              s0 = peg$FAILED;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
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        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = peg$parsesourceEntry();
      if (s1 !== peg$FAILED) {
        peg$savedPos = s0;
        s1 = peg$c5(s1);
      }
      s0 = s1;
    }

    return s0;
  }

  function peg$parsesourceEntry() {
    var s0;

    s0 = peg$parseurlEntry();
    if (s0 === peg$FAILED) {
      s0 = peg$parselocalEntry();
    }

    return s0;
  }

  function peg$parseurlEntry() {
    var s0, s1, s2, s3;

    s0 = peg$currPos;
    s1 = peg$parseurl();
    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$parsewhitespace();
      if (s3 !== peg$FAILED) {
        while (s3 !== peg$FAILED) {
          s2.push(s3);
          s3 = peg$parsewhitespace();
        }
      } else {
        s2 = peg$FAILED;
      }
      if (s2 !== peg$FAILED) {
        s3 = peg$parseformat();
        if (s3 !== peg$FAILED) {
          peg$savedPos = s0;
          s1 = peg$c6(s1, s3);
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = peg$parseurl();
      if (s1 !== peg$FAILED) {
        peg$savedPos = s0;
        s1 = peg$c7(s1);
      }
      s0 = s1;
    }

    return s0;
  }

  function peg$parseurl() {
    var s0, s1, s2, s3;

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 4) === peg$c8) {
      s1 = peg$c8;
      peg$currPos += 4;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c9); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parsevalue();
      if (s2 !== peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 41) {
          s3 = peg$c10;
          peg$currPos++;
        } else {
          s3 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c11); }
        }
        if (s3 !== peg$FAILED) {
          peg$savedPos = s0;
          s1 = peg$c12(s2);
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    return s0;
  }

  function peg$parseformat() {
    var s0, s1, s2, s3;

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c13) {
      s1 = peg$c13;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c14); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parsevalue();
      if (s2 !== peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 41) {
          s3 = peg$c10;
          peg$currPos++;
        } else {
          s3 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c11); }
        }
        if (s3 !== peg$FAILED) {
          peg$savedPos = s0;
          s1 = peg$c12(s2);
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    return s0;
  }

  function peg$parselocalEntry() {
    var s0, s1, s2, s3;

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c15) {
      s1 = peg$c15;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c16); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parsevalue();
      if (s2 !== peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 41) {
          s3 = peg$c10;
          peg$currPos++;
        } else {
          s3 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c11); }
        }
        if (s3 !== peg$FAILED) {
          peg$savedPos = s0;
          s1 = peg$c17(s2);
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    return s0;
  }

  function peg$parsevalue() {
    var s0, s1, s2;

    s0 = peg$currPos;
    s1 = [];
    if (peg$c18.test(input.charAt(peg$currPos))) {
      s2 = input.charAt(peg$currPos);
      peg$currPos++;
    } else {
      s2 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c19); }
    }
    if (s2 !== peg$FAILED) {
      while (s2 !== peg$FAILED) {
        s1.push(s2);
        if (peg$c18.test(input.charAt(peg$currPos))) {
          s2 = input.charAt(peg$currPos);
          peg$currPos++;
        } else {
          s2 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c19); }
        }
      }
    } else {
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      peg$savedPos = s0;
      s1 = peg$c20(s1);
    }
    s0 = s1;

    return s0;
  }

  function peg$parsewhitespace() {
    var s0;

    if (peg$c21.test(input.charAt(peg$currPos))) {
      s0 = input.charAt(peg$currPos);
      peg$currPos++;
    } else {
      s0 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c22); }
    }

    return s0;
  }


    var util = _dereq_('../util');


  peg$result = peg$startRuleFunction();

  if (peg$result !== peg$FAILED && peg$currPos === input.length) {
    return peg$result;
  } else {
    if (peg$result !== peg$FAILED && peg$currPos < input.length) {
      peg$fail(peg$endExpectation());
    }

    throw peg$buildStructuredError(
      peg$maxFailExpected,
      peg$maxFailPos < input.length ? input.charAt(peg$maxFailPos) : null,
      peg$maxFailPos < input.length
        ? peg$computeLocation(peg$maxFailPos, peg$maxFailPos + 1)
        : peg$computeLocation(peg$maxFailPos, peg$maxFailPos)
    );
  }
}

module.exports = {
  SyntaxError: peg$SyntaxError,
  parse:       peg$parse
};

},{"../util":3}],2:[function(_dereq_,module,exports){
var grammar = _dereq_('./grammar');


exports.SyntaxError = function (message, offset) {
    this.message  = message;
    this.offset   = offset;
};

exports.parse = function (fontFaceSourceValue) {
    try {
        return grammar.parse(fontFaceSourceValue);
    } catch (e) {
        throw new exports.SyntaxError(e.message, e.offset);
    }
};

exports.serialize = function (parsedFontFaceSources) {
    return parsedFontFaceSources.map(function (sourceItem) {
        var itemValue;

        if (sourceItem.url) {
            itemValue = 'url("' + sourceItem.url + '")';
            if (sourceItem.format) {
                itemValue += ' format("' + sourceItem.format + '")';
            }
        } else {
            itemValue = 'local("' + sourceItem.local + '")';
        }
        return itemValue;
    }).join(', ');
};

},{"./grammar":1}],3:[function(_dereq_,module,exports){
var trimCSSWhitespace = function (value) {
    var whitespaceRegex = /^[\t\r\f\n ]*(.+?)[\t\r\f\n ]*$/;

    return value.replace(whitespaceRegex, "$1");
};

var unquoteString = function (quotedUrl) {
    var doubleQuoteRegex = /^"(.*)"$/,
        singleQuoteRegex = /^'(.*)'$/;

    if (doubleQuoteRegex.test(quotedUrl)) {
        return quotedUrl.replace(doubleQuoteRegex, "$1");
    } else {
        if (singleQuoteRegex.test(quotedUrl)) {
            return quotedUrl.replace(singleQuoteRegex, "$1");
        } else {
            return quotedUrl;
        }
    }
};

exports.extractValue = function (value) {
    return unquoteString(trimCSSWhitespace(value));
};

},{}]},{},[2])(2)
});