CMaps binary packing

external/cmapscompress/compress.js

@@ -0,0 +1,437 @@
+/* Copyright 2014 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+var fs = require('fs');
+var path = require('path');
+var parseAdobeCMap = require('./parse.js').parseAdobeCMap;
+var optimizeCMap = require('./optimize.js').optimizeCMap;
+
+function compressCmap(srcPath, destPath, verify) {
+  var content = fs.readFileSync(srcPath).toString();
+  var inputData = parseAdobeCMap(content);
+  optimizeCMap(inputData);
+
+  var out = writeByte((inputData.type << 1) | inputData.wmode);
+  if (inputData.comment) {
+    out += writeByte(0xE0) + writeString(inputData.comment);
+  }
+  if (inputData.usecmap) {
+    out += writeByte(0xE1) + writeString(inputData.usecmap);
+  }
+  var i = 0;
+  while (i < inputData.body.length) {
+    var item = inputData.body[i++], subitems = item.items;
+    var first = item.items[0];
+    var sequence = item.sequence === true;
+    var flags = (item.type << 5) | (sequence ? 0x10 : 0);
+    var nextStart, nextCode;
+    switch (item.type) {
+      case 0:
+        out += writeByte(flags | getHexSize(first.start)) + writeNumber(subitems.length);
+        out += first.start + writeNumber(subHex(first.end, first.start));
+        nextStart = incHex(first.end);
+        for (var j = 1; j < subitems.length; j++) {
+          out += writeNumber(subHex(subitems[j].start, nextStart)) +
+            writeNumber(subHex(subitems[j].end, subitems[j].start));
+          nextStart = incHex(subitems[j].end);
+        }
+        break;
+      case 1:
+        out += writeByte(flags | getHexSize(first.start)) + writeNumber(subitems.length);
+        out += first.start + writeNumber(subHex(first.end, first.start)) + writeNumber(first.code);
+        nextStart = incHex(first.end);
+        for (var j = 1; j < subitems.length; j++) {
+          out += writeNumber(subHex(subitems[j].start, nextStart)) +
+            writeNumber(subHex(subitems[j].end, subitems[j].start)) +
+            writeNumber(subitems[j].code);
+          nextStart = incHex(subitems[j].end);
+        }
+        break;
+      case 2:
+        out += writeByte(flags | getHexSize(first.char)) + writeNumber(subitems.length);
+        out += first.char + writeNumber(first.code);
+        nextStart = incHex(first.char);
+        nextCode = first.code + 1;
+        for (var j = 1; j < subitems.length; j++) {
+          out += (sequence ? '' : writeNumber(subHex(subitems[j].char, nextStart))) +
+            writeSigned(subitems[j].code - nextCode);
+          nextStart = incHex(subitems[j].char);
+          nextCode = item.items[j].code + 1;
+        }
+        break;
+      case 3:
+        out += writeByte(flags | getHexSize(first.start)) + writeNumber(subitems.length);
+        out += first.start + writeNumber(subHex(first.end, first.start)) + writeNumber(first.code);
+        nextStart = incHex(first.end);
+        for (var j = 1; j < subitems.length; j++) {
+          out += (sequence ? '' : writeNumber(subHex(subitems[j].start, nextStart))) +
+            writeNumber(subHex(subitems[j].end, subitems[j].start)) +
+            writeNumber(subitems[j].code);
+          nextStart = incHex(subitems[j].end);
+        }
+        break;
+      case 4:
+        out += writeByte(flags | getHexSize(first.code)) + writeNumber(subitems.length);
+        out += first.char + first.code;
+        nextStart = incHex(first.char);
+        nextCode = incHex(first.code);
+        for (var j = 1; j < subitems.length; j++) {
+          out += (sequence ? '' : writeNumber(subHex(subitems[j].char, nextStart))) +
+            writeSigned(subHex(subitems[j].code, nextCode));
+          nextStart = incHex(subitems[j].char);
+          nextCode = incHex(subitems[j].code);
+        }
+        break;
+      case 5:
+        out += writeByte(flags | getHexSize(first.code)) + writeNumber(subitems.length);
+        out += first.start + writeNumber(subHex(first.end, first.start)) + first.code;
+        nextStart = incHex(first.end);
+        for (var j = 1; j < subitems.length; j++) {
+          out += (sequence ? '' : writeNumber(subHex(subitems[j].start, nextStart))) +
+            writeNumber(subHex(subitems[j].end, subitems[j].start)) +
+            subitems[j].code;
+          nextStart = incHex(subitems[j].end);
+        }
+        break;
+
+    }
+  }
+
+  fs.writeFileSync(destPath, new Buffer(out, 'hex'));
+
+  if (verify) {
+    var result2 = parseCMap(out);
+    var isGood = JSON.stringify(inputData) == JSON.stringify(result2);
+    if (!isGood) {
+      throw new Error('Extracted data does not match the expected result');
+    }
+  }
+
+  return {
+    orig: fs.statSync(srcPath).size,
+    packed: out.length >> 1
+  };
+}
+
+function parseCMap(binaryData) {
+  var reader = {
+    buffer: binaryData,
+    pos: 0,
+    end: binaryData.length,
+    readByte: function () {
+      if (this.pos >= this.end) {
+        return -1;
+      }
+      var d1 = fromHexDigit(this.buffer[this.pos]);
+      var d2 = fromHexDigit(this.buffer[this.pos + 1]);
+      this.pos += 2;
+      return (d1 << 4) | d2;
+    },
+    readNumber: function () {
+      var n = 0;
+      var last;
+      do {
+        var b = this.readByte();
+        last = !(b & 0x80);
+        n = (n << 7) | (b & 0x7F);
+      } while (!last);
+      return n;
+    },
+    readSigned: function () {
+      var n = this.readNumber();
+      return (n & 1) ? -(n >>> 1) - 1 : n >>> 1;
+    },
+    readHex: function (size) {
+      var lengthInChars = (size + 1) << 1;
+      var s = this.buffer.substr(this.pos, lengthInChars);
+      this.pos += lengthInChars;
+      return s;
+    },
+    readHexNumber: function (size) {
+      var lengthInChars = (size + 1) << 1;
+      var stack = [];
+      do {
+        var b = this.readByte();
+        last = !(b & 0x80);
+        stack.push(b & 0x7F);
+      } while (!last);
+      var s = '', buffer = 0, bufferSize = 0;
+      while (s.length < lengthInChars) {
+        while (bufferSize < 4 && stack.length > 0) {
+          buffer = (stack.pop() << bufferSize) | buffer;
+          bufferSize += 7;
+        }
+        s = toHexDigit(buffer & 15) + s;
+        buffer >>= 4;
+        bufferSize -= 4;
+      }
+      return s;
+    },
+    readHexSigned: function (size) {
+      var num = this.readHexNumber(size);
+      var sign = fromHexDigit(num[num.length - 1]) & 1 ? 15 : 0;
+      var c = 0;
+      var result = '';
+      for (var i = 0; i < num.length; i++) {
+        c = (c << 4) | fromHexDigit(num[i]);
+        result += toHexDigit(sign ? (c >> 1) ^ sign : (c >> 1));
+        c &= 1;
+      }
+      return result;
+    },
+    readString: function () {
+      var len = this.readNumber();
+      var s = '';
+      for (var i = 0; i < len; i++) {
+        s += String.fromCharCode(this.readNumber());
+      }
+      return s;
+    }
+  };
+
+  var header = reader.readByte();
+  var result = {
+    type: header >> 1,
+    wmode: header & 1,
+    comment: null,
+    usecmap: null,
+    body: []
+  };
+
+  var b;
+  while ((b = reader.readByte()) >= 0) {
+    var type = b >> 5;
+    if (type === 7) {
+      switch (b & 0x1F) {
+        case 0:
+          result.comment = reader.readString();
+          break;
+        case 1:
+          result.usecmap = reader.readString();
+          break;
+      }
+      continue;
+    }
+    var sequence = !!(b & 0x10);
+    var dataSize = b & 15;
+    var subitems = [];
+    var item = {
+      type: type,
+      items: subitems
+    };
+    if (sequence) {
+      item.sequence = true;
+    }
+    var ucs2DataSize = 1;
+    var subitemsCount = reader.readNumber();
+    var start, end, code, char;
+    switch (type) {
+      case 0:
+        start = reader.readHex(dataSize);
+        end = addHex(reader.readHexNumber(dataSize), start);
+        subitems.push({start: start, end: end});
+        for (var i = 1; i < subitemsCount; i++) {
+          start = addHex(reader.readHexNumber(dataSize), incHex(end));
+          end = addHex(reader.readHexNumber(dataSize), start);
+          subitems.push({start: start, end: end});
+        }
+        break;
+      case 1:
+        start = reader.readHex(dataSize);
+        end = addHex(reader.readHexNumber(dataSize), start);
+        code = reader.readNumber();
+        subitems.push({start: start, end: end, code: code});
+        for (var i = 1; i < subitemsCount; i++) {
+          start = addHex(reader.readHexNumber(dataSize), incHex(end));
+          end = addHex(reader.readHexNumber(dataSize), start);
+          code = reader.readNumber();
+          subitems.push({start: start, end: end, code: code});
+        }
+        break;
+      case 2:
+        char = reader.readHex(dataSize);
+        code = reader.readNumber();
+        subitems.push({char: char, code: code});
+        for (var i = 1; i < subitemsCount; i++) {
+          char = sequence ? incHex(char) : addHex(reader.readHexNumber(dataSize), incHex(char));
+          code = reader.readSigned() + (code + 1);
+          subitems.push({char: char, code: code});
+        }
+        break;
+      case 3:
+        start = reader.readHex(dataSize);
+        end = addHex(reader.readHexNumber(dataSize), start);
+        code = reader.readNumber();
+        subitems.push({start: start, end: end, code: code});
+        for (var i = 1; i < subitemsCount; i++) {
+          start = sequence ? incHex(end) : addHex(reader.readHexNumber(dataSize), incHex(end));
+          end = addHex(reader.readHexNumber(dataSize), start);
+          code = reader.readNumber();
+          subitems.push({start: start, end: end, code: code});
+        }
+        break;
+      case 4:
+        char = reader.readHex(ucs2DataSize);
+        code = reader.readHex(dataSize);
+        subitems.push({char: char, code: code});
+        for (var i = 1; i < subitemsCount; i++) {
+          char = sequence ? incHex(char) : addHex(reader.readHexNumber(ucs2DataSize), incHex(char));
+          code = addHex(reader.readHexSigned(dataSize), incHex(code));
+          subitems.push({char: char, code: code});
+        }
+        break;
+      case 5:
+        start = reader.readHex(ucs2DataSize);
+        end = addHex(reader.readHexNumber(ucs2DataSize), start);
+        code = reader.readHex(dataSize);
+        subitems.push({start: start, end: end, code: code});
+        for (var i = 1; i < subitemsCount; i++) {
+          start = sequence ? incHex(end) : addHex(reader.readHexNumber(ucs2DataSize), incHex(end));
+          end = addHex(reader.readHexNumber(ucs2DataSize), start);
+          code = reader.readHex(dataSize);
+          subitems.push({start: start, end: end, code: code});
+        }
+        break;
+      default:
+        throw new Error('Unknown type: ' + type)
+    }
+    result.body.push(item);
+  }
+
+  return result;
+}
+
+function toHexDigit(n) {
+  return n.toString(16);
+}
+function fromHexDigit(s) {
+  return parseInt(s, 16);
+}
+function getHexSize(s) {
+  return (s.length >> 1) - 1;
+}
+function writeByte(b) {
+  return toHexDigit((b >> 4) & 15) + toHexDigit(b & 15);
+}
+function writeNumber(n) {
+  if (typeof n === 'string') {
+    var s = '', buffer = 0, bufferSize = 0;
+    var i = n.length;
+    while (i > 0) {
+      --i;
+      buffer = (fromHexDigit(n[i]) << bufferSize) | buffer;
+      bufferSize += 4;
+      if (bufferSize >= 7) {
+        s = writeByte((buffer & 0x7f) | (s.length > 0 ? 0x80 : 0)) + s;
+        buffer >>>= 7;
+        bufferSize -= 7;
+      }
+    }
+    if (buffer > 0) {
+      s = writeByte((buffer & 0x7f) | (s.length > 0 ? 0x80 : 0)) + s;
+    }
+    while (s.indexOf('80') === 0) {
+      s = s.substr(2);
+    }
+    return s;
+  } else {
+    var s = writeByte(n & 0x7F);
+    n >>>= 7;
+    while (n > 0) {
+      s = writeByte((n & 0x7F) | 0x80) + s;
+      n >>>= 7;
+    }
+    return s;
+  }
+}
+function writeSigned(n) {
+  if (typeof n === 'string') {
+    var t = '';
+    var c = fromHexDigit(n[0]);
+    var neg = c >= 8;
+    c = neg ? (c ^ 15) : c;
+    for (var i = 1; i < n.length; i++) {
+      var d = fromHexDigit(n[i]);
+      c = (c << 4) | (neg ? (d ^ 15) : d);
+      t += toHexDigit(c >> 3);
+      c = c & 7;
+    }
+    t += toHexDigit((c << 1) | (neg ? 1 : 0));
+    return writeNumber(t);
+  }
+  return n < 0 ? writeNumber(-2 * n - 1) : writeNumber(2 * n);
+}
+function writeString(s) {
+  var t = writeNumber(s.length);
+  for (var i = 0; i < s.length; i++) {
+    t += writeNumber(s.charCodeAt(i));
+  }
+  return t;
+}
+function addHex(a, b) {
+  var c = 0, s = '';
+  for (var i = a.length - 1; i >= 0; i--) {
+    c += fromHexDigit(a[i]) + fromHexDigit(b[i]);
+    if (c >= 16) {
+      s = toHexDigit(c - 16) + s;
+      c = 1;
+    } else {
+      s = toHexDigit(c) + s;
+      c = 0;
+    }
+  }
+  return s;
+}
+function subHex(a, b) {
+  var c = 0, s = '';
+  for (var i = a.length - 1; i >= 0; i--) {
+    c += fromHexDigit(a[i]) - fromHexDigit(b[i]);
+    if (c < 0) {
+      s = toHexDigit(c + 16) + s;
+      c = -1;
+    } else {
+      s = toHexDigit(c) + s;
+      c = 0;
+    }
+  }
+  return s;
+}
+function incHex(a) {
+  var c = 1, s = '';
+  for (var i = a.length - 1; i >= 0; i--) {
+    c += fromHexDigit(a[i]);
+    if (c >= 16) {
+      s = toHexDigit(c - 16) + s;
+      c = 1;
+    } else {
+      s = toHexDigit(c) + s;
+      c = 0;
+    }
+  }
+  return s;
+}
+
+exports.compressCmaps = function (src, dest, verify) {
+  var files = fs.readdirSync(src).filter(function (fn) {
+    return fn.indexOf('.') < 0; // skipping files with the extension
+  });
+  files.forEach(function (fn) {
+    var srcPath = path.join(src, fn);
+    var destPath = path.join(dest, fn + '.bcmap');
+    var stats = compressCmap(srcPath, destPath, verify);
+    console.log('Compressing ' + fn + ': ' + stats.orig + ' vs ' + stats.packed +
+      ' ' + (stats.packed / stats.orig * 100).toFixed(1) + '%');
+  });
+};

external/cmapscompress/optimize.js

@@ -0,0 +1,211 @@
+/* Copyright 2014 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+exports.optimizeCMap = function (data) {
+  var i = 1;
+  while (i < data.body.length) {
+    if (data.body[i - 1].type === data.body[i].type) {
+      data.body[i - 1].items = data.body[i - 1].items.concat(data.body[i].items);
+      data.body.splice(i, 1);
+    } else {
+      i++;
+    }
+  }
+  // split into groups with different lengths
+  var i = 0;
+  while (i < data.body.length) {
+    var item = data.body[i];
+    var keys = Object.keys(item.items[0]).filter(function (i) {
+      return typeof item.items[0][i] === 'string';
+    });
+    var j = 1;
+    while (j < item.items.length) {
+      var different = false;
+      for (var q = 0; q < keys.length && !different; q++) {
+        different = item.items[j - 1][keys[q]].length !== item.items[j][keys[q]].length;
+      }
+      if (different) {
+        break;
+      }
+      j++;
+    }
+    if (j < item.items.length) {
+      data.body.splice(i + 1, 0, {
+        type: item.type,
+        items: item.items.splice(j, item.items.length - j)
+      });
+    }
+    i++;
+  }
+  // find sequences of single char ranges
+  var i = 0;
+  while (i < data.body.length) {
+    var item = data.body[i];
+    if (item.type === 3 || item.type === 5) {
+      var j = 0;
+      while (j < item.items.length) {
+        var q = j;
+        while (j < item.items.length && item.items[j].start === item.items[j].end) {
+          j++;
+        }
+        if ((j - q) >= 9) {
+          if (j < item.items.length) {
+            data.body.splice(i + 1, 0, {
+              type: item.type,
+              items: item.items.splice(j, item.items.length - j)
+            });
+          }
+          if (q > 0) {
+            data.body.splice(i + 1, 0, {
+              type: item.type - 1,
+              items: item.items.splice(q, j - q).map(function (i) {
+                return {char: i.start, code: i.code };
+              })
+            });
+            i++;
+          } else {
+            item.type -= 1;
+            item.items = item.items.map(function (i) {
+              return {char: i.start, code: i.code };
+            });
+          }
+          continue;
+        }
+        j++;
+      }
+    }
+    i++;
+  }
+
+  //  find sequences of increasing code/ranges order
+  var i = 0;
+  while (i < data.body.length) {
+    var item = data.body[i];
+    if (item.type >= 2 && item.type <= 5) {
+      var j = 1;
+      var startProp = item.type === 2 || item.type === 4 ? 'char' : 'start';
+      var endProp = item.type === 2 || item.type === 4 ? 'char' : 'end';
+      while (j < item.items.length) {
+        var q = j - 1;
+        while (j < item.items.length && incHex(item.items[j - 1][endProp]) === item.items[j][startProp]) {
+          j++;
+        }
+        if ((j - q) >= 9) {
+          if (j < item.items.length) {
+            data.body.splice(i + 1, 0, {
+              type: item.type,
+              items: item.items.splice(j, item.items.length - j)
+            });
+          }
+          if (q > 0) {
+            data.body.splice(i + 1, 0, {
+              type: item.type,
+              items: item.items.splice(q, j - q),
+              sequence: true
+            });
+            i++;
+          } else {
+            item.sequence = true;
+          }
+          continue;
+        }
+        j++;
+      }
+    }
+    i++;
+  }
+
+  // split non-sequences two groups where codes are close
+  var i = 0;
+  while (i < data.body.length) {
+    var item = data.body[i];
+    if (!item.sequence && (item.type === 2 || item.type === 3)) {
+      var subitems = item.items;
+      var codes = subitems.map(function (i) {
+        return i.code;
+      });
+      codes.sort(function (a, b) {
+        return a - b;
+      });
+      var maxDistance = 100, minItems = 10, itemsPerBucket = 50;
+      if (subitems.length > minItems && codes[codes.length - 1] - codes[0] > maxDistance) {
+        var gapsCount = Math.max(2, (subitems.length / itemsPerBucket) | 0);
+        var gaps = [];
+        for (var q = 0; q < gapsCount; q++) {
+          gaps.push({length: 0});
+        }
+        for (var j = 1; j < codes.length; j++) {
+          var gapLength = codes[j] - codes[j - 1];
+          var q = 0;
+          while (q < gaps.length && gaps[q].length > gapLength) {
+            q++;
+          }
+          if (q >= gaps.length) {
+            continue;
+          }
+          var q0 = q;
+          while (q < gaps.length) {
+            if (gaps[q].length < gaps[q0].length) {
+              q0 = q;
+            }
+            q++;
+          }
+          gaps[q0] = {length: gapLength, boundary: codes[j]};
+        }
+        var groups = gaps.filter(function (g) {
+          return g.length >= maxDistance;
+        }).map(function (g) {
+            return g.boundary;
+          });
+        groups.sort(function (a, b) {
+          return a - b;
+        });
+        if (groups.length > 1) {
+          var buckets = [item.items = []];
+          for (var j = 0; j < groups.length; j++) {
+            var newItem = {type: item.type, items: []}
+            buckets.push(newItem.items);
+            i++;
+            data.body.splice(i, 0, newItem);
+          }
+          for (var j = 0; j < subitems.length; j++) {
+            var code = subitems[j].code;
+            var q = 0;
+            while (q < groups.length && groups[q] <= code) {
+              q++;
+            }
+            buckets[q].push(subitems[j]);
+          }
+        }
+      }
+    }
+    i++;
+  }
+};
+
+function incHex(a) {
+  var c = 1, s = '';
+  for (var i = a.length - 1; i >= 0; i--) {
+    c += parseInt(a[i], 16);
+    if (c >= 16) {
+      s = '0' + s;
+      c = 1;
+    } else {
+      s = c.toString(16) + s;
+      c = 0;
+    }
+  }
+  return s;
+}

external/cmapscompress/parse.js

@@ -0,0 +1,101 @@
+/* Copyright 2014 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+exports.parseAdobeCMap = function (content) {
+  var m = /(\bbegincmap\b[\s\S]*?)\bendcmap\b/.exec(content);
+  if (!m) {
+    throw new Error('cmap was not found');
+  }
+
+  var body = m[1].replace(/\r\n?/g, '\n');
+  var result = {
+    type: 1,
+    wmode: 0,
+    comment: 'Copyright 1990-2009 Adobe Systems Incorporated.\nAll rights reserved.\nhttp://sourceforge.net/adobe/cmap/wiki/License/',
+    usecmap: null,
+    body: []
+  };
+  m = /\/CMapType\s+(\d+)+\s+def\b/.exec(body);
+  result.type = +m[1];
+  m = /\/WMode\s+(\d+)+\s+def\b/.exec(body);
+  result.wmode = +m[1];
+  m = /\/([\w\-]+)\s+usecmap\b/.exec(body);
+  if (m) {
+    result.usecmap = m[1];
+  }
+  var re = /(\d+)\s+(begincodespacerange|beginnotdefrange|begincidchar|begincidrange|beginbfchar|beginbfrange)\n([\s\S]*?)\n(endcodespacerange|endnotdefrange|endcidchar|endcidrange|endbfchar|endbfrange)/g;
+  while (m = re.exec(body)) {
+    var lines = m[3].toLowerCase().split('\n');
+    var m2;
+    switch (m[2]) {
+      case 'begincodespacerange':
+        result.body.push({
+          type: 0,
+          items: lines.map(function (line) {
+            var m = /<(\w+)>\s+<(\w+)>/.exec(line);
+            return {start: m[1], end: m[2]};
+          })
+        });
+        break;
+      case 'beginnotdefrange':
+        result.body.push({
+          type: 1,
+          items: lines.map(function (line) {
+            var m = /<(\w+)>\s+<(\w+)>\s+(\d+)/.exec(line);
+            return {start: m[1], end: m[2], code: +m[3]};
+          })
+        });
+        break;
+      case 'begincidchar':
+        result.body.push({
+          type: 2,
+          items: lines.map(function (line) {
+            var m = /<(\w+)>\s+(\d+)/.exec(line);
+            return {char: m[1], code: +m[2]};
+          })
+        });
+        break;
+      case 'begincidrange':
+        result.body.push({
+          type: 3,
+          items: lines.map(function (line) {
+            var m = /<(\w+)>\s+<(\w+)>\s+(\d+)/.exec(line);
+            return {start: m[1], end: m[2], code: +m[3]};
+          })
+        });
+        break;
+      case 'beginbfchar':
+        result.body.push({
+          type: 4,
+          items: lines.map(function (line) {
+            var m = /<(\w+)>\s+<(\w+)>/.exec(line);
+            return {char: m[1], code: m[2]};
+          })
+        });
+        break;
+      case 'beginbfrange':
+        result.body.push({
+          type: 5,
+          items: lines.map(function (line) {
+            var m = /<(\w+)>\s+<(\w+)>\s+<(\w+)>/.exec(line);
+            return {start: m[1], end: m[2], code: m[3]};
+          })
+        });
+        break;
+    }
+  }
+
+  return result;
+};

make.js

@@ -90,6 +90,7 @@ var COMMON_WEB_FILES =
 target.generic = function() {
   target.bundle({});
   target.locale();
+  target.cmaps();
 
   cd(ROOT_DIR);
   echo();
@@ -107,10 +108,10 @@ target.generic = function() {
     copy: [
       [COMMON_WEB_FILES, GENERIC_DIR + '/web'],
       ['external/webL10n/l10n.js', GENERIC_DIR + '/web'],
-      ['external/cmaps/', GENERIC_DIR + '/web/cmaps'],
       ['web/viewer.css', GENERIC_DIR + '/web'],
       ['web/compatibility.js', GENERIC_DIR + '/web'],
       ['web/compressed.tracemonkey-pldi-09.pdf', GENERIC_DIR + '/web'],
+      ['web/cmaps', GENERIC_DIR + '/web'],
       ['web/locale', GENERIC_DIR + '/web']
     ],
     preprocess: [
@@ -228,6 +229,25 @@ target.locale = function() {
   chromeManifestContent.to(CHROME_MANIFEST_OUTPUT);
 };
 
+//
+// make cmaps
+// Compresses cmap files
+//
+target.cmaps = function (args) {
+  var CMAP_INPUT = 'external/cmaps';
+  var VIEWER_CMAP_OUTPUT = 'web/cmaps';
+  cd(ROOT_DIR);
+  echo();
+  echo('### Building cmaps');
+
+  rm('-rf', VIEWER_CMAP_OUTPUT);
+  mkdir('-p', VIEWER_CMAP_OUTPUT);
+
+  var compressCmaps =
+    require('./external/cmapscompress/compress.js').compressCmaps;
+  compressCmaps(CMAP_INPUT, VIEWER_CMAP_OUTPUT, true);
+};
+
 //
 // make bundle
 // Bundles all source files into one wrapper 'pdf.js' file, in the given order.
@@ -410,6 +430,7 @@ target.minified = function() {
 
   target.bundle({});
   target.locale();
+  target.cmaps();
 
   cd(ROOT_DIR);
   echo();
@@ -428,6 +449,7 @@ target.minified = function() {
       [COMMON_WEB_FILES, MINIFIED_DIR + '/web'],
       ['web/viewer.css', MINIFIED_DIR + '/web'],
       ['web/compressed.tracemonkey-pldi-09.pdf', MINIFIED_DIR + '/web'],
+      ['web/cmaps', MINIFIED_DIR + '/web'],
       ['web/locale', MINIFIED_DIR + '/web']
     ],
     preprocess: [
@@ -492,6 +514,7 @@ target.extension = function() {
   echo('### Building extensions');
 
   target.locale();
+  target.cmaps();
   target.firefox();
   target.chromium();
 };
@@ -544,6 +567,7 @@ target.firefox = function() {
       FIREFOX_AMO_EXTENSION_NAME = 'pdf.js.amo.xpi';
 
   target.locale();
+  target.cmaps();
   target.bundle({ excludes: ['core/network.js'], defines: defines });
   cd(ROOT_DIR);
 
@@ -574,7 +598,7 @@ target.firefox = function() {
     defines: defines,
     copy: [
       [COMMON_WEB_FILES, FIREFOX_BUILD_CONTENT_DIR + '/web'],
-      ['external/cmaps/', FIREFOX_BUILD_CONTENT_DIR + '/web/cmaps'],
+      ['web/cmaps/', FIREFOX_BUILD_CONTENT_DIR + '/web/cmaps'],
       [FIREFOX_EXTENSION_DIR + 'tools/l10n.js',
        FIREFOX_BUILD_CONTENT_DIR + '/web'],
       ['web/default_preferences.js', FIREFOX_BUILD_CONTENT_DIR]
@@ -691,7 +715,7 @@ target.mozcentral = function() {
     defines: defines,
     copy: [
       [COMMON_WEB_FILES, MOZCENTRAL_CONTENT_DIR + '/web'],
-      ['external/cmaps/', MOZCENTRAL_CONTENT_DIR + '/web/cmaps'],
+      ['web/cmaps/', MOZCENTRAL_CONTENT_DIR + '/web/cmaps'],
       ['extensions/firefox/tools/l10n.js', MOZCENTRAL_CONTENT_DIR + '/web'],
       ['web/default_preferences.js', MOZCENTRAL_CONTENT_DIR]
     ],
@@ -746,6 +770,7 @@ target.mozcentral = function() {
 
 target.b2g = function() {
   target.locale();
+  target.cmaps();
 
   echo();
   echo('### Building B2G (Firefox OS App)');
@@ -763,10 +788,10 @@ target.b2g = function() {
   var setup = {
     defines: defines,
     copy: [
-      ['external/cmaps/', B2G_BUILD_CONTENT_DIR + '/web/cmaps'],
       ['extensions/b2g/images', B2G_BUILD_CONTENT_DIR + '/web'],
       ['extensions/b2g/viewer.html', B2G_BUILD_CONTENT_DIR + '/web'],
       ['extensions/b2g/viewer.css', B2G_BUILD_CONTENT_DIR + '/web'],
+      ['web/cmaps/', B2G_BUILD_CONTENT_DIR + '/web/cmaps'],
       ['web/locale', B2G_BUILD_CONTENT_DIR + '/web'],
       ['external/webL10n/l10n.js', B2G_BUILD_CONTENT_DIR + '/web']
     ],
@@ -784,6 +809,9 @@ target.b2g = function() {
 // make chrome
 //
 target.chromium = function() {
+  target.locale();
+  target.cmaps();
+
   cd(ROOT_DIR);
   echo();
   echo('### Building Chromium extension');
@@ -804,7 +832,6 @@ target.chromium = function() {
   var setup = {
     defines: defines,
     copy: [
-      ['external/cmaps/', CHROME_BUILD_CONTENT_DIR + '/web/cmaps'],
       [COMMON_WEB_FILES, CHROME_BUILD_CONTENT_DIR + '/web'],
       [['extensions/chromium/*.json',
         'extensions/chromium/*.html',
@@ -814,6 +841,7 @@ target.chromium = function() {
        CHROME_BUILD_DIR],
       ['external/webL10n/l10n.js', CHROME_BUILD_CONTENT_DIR + '/web'],
       ['web/viewer.css', CHROME_BUILD_CONTENT_DIR + '/web'],
+      ['web/cmaps/', CHROME_BUILD_CONTENT_DIR + '/web/cmaps'],
       ['web/locale', CHROME_BUILD_CONTENT_DIR + '/web']
     ],
     preprocess: [
@@ -931,6 +959,8 @@ target.test = function() {
 // (Special tests for the Github bot)
 //
 target.bottest = function() {
+  target.cmaps();
+
   target.unittest({}, function() {
     target.fonttest({}, function() {
       target.browsertest({noreftest: true});
@@ -1011,6 +1041,8 @@ target.fonttest = function(options, callback) {
 // make botmakeref
 //
 target.botmakeref = function() {
+  target.cmaps();
+
   cd(ROOT_DIR);
   echo();
   echo('### Creating reference images');

src/core/cmap.js

@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 /* globals Util, isString, isInt, warn, error, isCmd, isEOF, isName, Lexer,
-           isStream, StringStream */
+           isStream, StringStream, PDFJS, assert */
 
 'use strict';
 
@@ -275,6 +275,314 @@ var IdentityCMap = (function IdentityCMapClosure() {
   return IdentityCMap;
 })();
 
+var BinaryCMapReader = (function BinaryCMapReaderClosure() {
+  function fetchBinaryData(url) {
+    var nonBinaryRequest = PDFJS.disableWorker;
+    var request = new XMLHttpRequest();
+    request.open('GET', url, false);
+    if (!nonBinaryRequest) {
+      try {
+        request.responseType = 'arraybuffer';
+        nonBinaryRequest = request.responseType !== 'arraybuffer';
+      } catch (e) {
+        nonBinaryRequest = true;
+      }
+    }
+    if (nonBinaryRequest && request.overrideMimeType) {
+      request.overrideMimeType('text/plain; charset=x-user-defined');
+    }
+    request.send(null);
+    if (request.status === 0 && /^https?:/i.test(url)) {
+      error('Unable to get binary cMap at: ' + url);
+    }
+    if (nonBinaryRequest) {
+      var data = Array.prototype.map.call(request.responseText, function (ch) {
+        return ch.charCodeAt(0) & 255;
+      });
+      return new Uint8Array(data);
+    }
+    return new Uint8Array(request.response);
+  }
+
+  function hexToInt(a, size) {
+    var n = 0;
+    for (var i = 0; i <= size; i++) {
+      n = (n << 8) | a[i];
+    }
+    return n >>> 0;
+  }
+
+  function hexToStr(a, size) {
+    return String.fromCharCode.apply(null, a.subarray(0, size + 1));
+  }
+
+  function addHex(a, b, size) {
+    var c = 0;
+    for (var i = size; i >= 0; i--) {
+      c += a[i] + b[i];
+      a[i] = c & 255;
+      c >>= 8;
+    }
+  }
+
+  function incHex(a, size) {
+    var c = 1;
+    for (var i = size; i >= 0 && c > 0; i--) {
+      c += a[i];
+      a[i] = c & 255;
+      c >>= 8;
+    }
+  }
+
+  var MAX_NUM_SIZE = 16;
+  var MAX_ENCODED_NUM_SIZE = 19; // ceil(MAX_NUM_SIZE * 7 / 8)
+
+  function BinaryCMapStream(data) {
+    this.buffer = data;
+    this.pos = 0;
+    this.end = data.length;
+    this.tmpBuf = new Uint8Array(MAX_ENCODED_NUM_SIZE);
+  }
+
+  BinaryCMapStream.prototype = {
+    readByte: function () {
+      if (this.pos >= this.end) {
+        return -1;
+      }
+      return this.buffer[this.pos++];
+    },
+    readNumber: function () {
+      var n = 0;
+      var last;
+      do {
+        var b = this.readByte();
+        if (b < 0) {
+          error('unexpected EOF in bcmap');
+        }
+        last = !(b & 0x80);
+        n = (n << 7) | (b & 0x7F);
+      } while (!last);
+      return n;
+    },
+    readSigned: function () {
+      var n = this.readNumber();
+      return (n & 1) ? ~(n >>> 1) : n >>> 1;
+    },
+    readHex: function (num, size) {
+      num.set(this.buffer.subarray(this.pos,
+        this.pos + size + 1));
+      this.pos += size + 1;
+    },
+    readHexNumber: function (num, size) {
+      var last;
+      var stack = this.tmpBuf, sp = 0;
+      do {
+        var b = this.readByte();
+        if (b < 0) {
+          error('unexpected EOF in bcmap');
+        }
+        last = !(b & 0x80);
+        stack[sp++] = b & 0x7F;
+      } while (!last);
+      var i = size, buffer = 0, bufferSize = 0;
+      while (i >= 0) {
+        while (bufferSize < 8 && stack.length > 0) {
+          buffer = (stack[--sp] << bufferSize) | buffer;
+          bufferSize += 7;
+        }
+        num[i] = buffer & 255;
+        i--;
+        buffer >>= 8;
+        bufferSize -= 8;
+      }
+    },
+    readHexSigned: function (num, size) {
+      this.readHexNumber(num, size);
+      var sign = num[size] & 1 ? 255 : 0;
+      var c = 0;
+      for (var i = 0; i <= size; i++) {
+        c = ((c & 1) << 8) | num[i];
+        num[i] = (c >> 1) ^ sign;
+      }
+    },
+    readString: function () {
+      var len = this.readNumber();
+      var s = '';
+      for (var i = 0; i < len; i++) {
+        s += String.fromCharCode(this.readNumber());
+      }
+      return s;
+    }
+  };
+
+  function processBinaryCMap(url, cMap, extend) {
+    var data = fetchBinaryData(url);
+    var stream = new BinaryCMapStream(data);
+
+    var header = stream.readByte();
+    cMap.vertical = !!(header & 1);
+
+    var useCMap = null;
+    var start = new Uint8Array(MAX_NUM_SIZE);
+    var end = new Uint8Array(MAX_NUM_SIZE);
+    var char = new Uint8Array(MAX_NUM_SIZE);
+    var charCode = new Uint8Array(MAX_NUM_SIZE);
+    var tmp = new Uint8Array(MAX_NUM_SIZE);
+    var code;
+
+    var b;
+    while ((b = stream.readByte()) >= 0) {
+      var type = b >> 5;
+      if (type === 7) { // metadata, e.g. comment or usecmap
+        switch (b & 0x1F) {
+          case 0:
+            stream.readString(); // skipping comment
+            break;
+          case 1:
+            useCMap = stream.readString();
+            break;
+        }
+        continue;
+      }
+      var sequence = !!(b & 0x10);
+      var dataSize = b & 15;
+
+      assert(dataSize + 1 <= MAX_NUM_SIZE);
+
+      var ucs2DataSize = 1;
+      var subitemsCount = stream.readNumber();
+      switch (type) {
+        case 0: // codespacerange
+          stream.readHex(start, dataSize);
+          stream.readHexNumber(end, dataSize);
+          addHex(end, start, dataSize);
+          cMap.addCodespaceRange(dataSize + 1, hexToInt(start, dataSize),
+                                 hexToInt(end, dataSize));
+          for (var i = 1; i < subitemsCount; i++) {
+            incHex(end, dataSize);
+            stream.readHexNumber(start, dataSize);
+            addHex(start, end, dataSize);
+            stream.readHexNumber(end, dataSize);
+            addHex(end, start, dataSize);
+            cMap.addCodespaceRange(dataSize + 1, hexToInt(start, dataSize),
+                                   hexToInt(end, dataSize));
+          }
+          break;
+        case 1: // notdefrange
+          stream.readHex(start, dataSize);
+          stream.readHexNumber(end, dataSize);
+          addHex(end, start, dataSize);
+          code = stream.readNumber();
+          // undefined range, skipping
+          for (var i = 1; i < subitemsCount; i++) {
+            incHex(end, dataSize);
+            stream.readHexNumber(start, dataSize);
+            addHex(start, end, dataSize);
+            stream.readHexNumber(end, dataSize);
+            addHex(end, start, dataSize);
+            code = stream.readNumber();
+            // nop
+          }
+          break;
+        case 2: // cidchar
+          stream.readHex(char, dataSize);
+          code = stream.readNumber();
+          cMap.mapOne(hexToInt(char, dataSize), String.fromCharCode(code));
+          for (var i = 1; i < subitemsCount; i++) {
+            incHex(char, dataSize);
+            if (!sequence) {
+              stream.readHexNumber(tmp, dataSize);
+              addHex(char, tmp, dataSize);
+            }
+            code = stream.readSigned() + (code + 1);
+            cMap.mapOne(hexToInt(char, dataSize), String.fromCharCode(code));
+          }
+          break;
+        case 3: // cidrange
+          stream.readHex(start, dataSize);
+          stream.readHexNumber(end, dataSize);
+          addHex(end, start, dataSize);
+          code = stream.readNumber();
+          cMap.mapRange(hexToInt(start, dataSize), hexToInt(end, dataSize),
+                        String.fromCharCode(code));
+          for (var i = 1; i < subitemsCount; i++) {
+            incHex(end, dataSize);
+            if (!sequence) {
+              stream.readHexNumber(start, dataSize);
+              addHex(start, end, dataSize);
+            } else {
+              start.set(end);
+            }
+            stream.readHexNumber(end, dataSize);
+            addHex(end, start, dataSize);
+            code = stream.readNumber();
+            cMap.mapRange(hexToInt(start, dataSize), hexToInt(end, dataSize),
+                          String.fromCharCode(code));
+          }
+          break;
+        case 4: // bfchar
+          stream.readHex(char, ucs2DataSize);
+          stream.readHex(charCode, dataSize);
+          cMap.mapOne(hexToInt(char, ucs2DataSize),
+                      hexToStr(charCode, dataSize));
+          for (var i = 1; i < subitemsCount; i++) {
+            incHex(char, ucs2DataSize);
+            if (!sequence) {
+              stream.readHexNumber(tmp, ucs2DataSize);
+              addHex(char, tmp, ucs2DataSize);
+            }
+            incHex(charCode, dataSize);
+            stream.readHexSigned(tmp, dataSize);
+            addHex(charCode, tmp, dataSize);
+            cMap.mapOne(hexToInt(char, ucs2DataSize),
+                        hexToStr(charCode, dataSize));
+          }
+          break;
+        case 5: // bfrange
+          stream.readHex(start, ucs2DataSize);
+          stream.readHexNumber(end, ucs2DataSize);
+          addHex(end, start, ucs2DataSize);
+          stream.readHex(charCode, dataSize);
+          cMap.mapRange(hexToInt(start, ucs2DataSize),
+                        hexToInt(end, ucs2DataSize),
+                        hexToStr(charCode, dataSize));
+          for (var i = 1; i < subitemsCount; i++) {
+            incHex(end, ucs2DataSize);
+            if (!sequence) {
+              stream.readHexNumber(start, ucs2DataSize);
+              addHex(start, end, ucs2DataSize);
+            } else {
+              start.set(end);
+            }
+            stream.readHexNumber(end, ucs2DataSize);
+            addHex(end, start, ucs2DataSize);
+            stream.readHex(charCode, dataSize);
+            cMap.mapRange(hexToInt(start, ucs2DataSize),
+                          hexToInt(end, ucs2DataSize),
+                          hexToStr(charCode, dataSize));
+          }
+          break;
+        default:
+          error('Unknown type: ' + type);
+          break;
+      }
+    }
+
+    if (useCMap) {
+      extend(useCMap);
+    }
+    return cMap;
+  }
+
+  function BinaryCMapReader() {}
+
+  BinaryCMapReader.prototype = {
+    read: processBinaryCMap
+  };
+
+  return BinaryCMapReader;
+})();
+
 var CMapFactory = (function CMapFactoryClosure() {
   function strToInt(str) {
     var a = 0;
@@ -417,7 +725,7 @@ var CMapFactory = (function CMapFactoryClosure() {
     }
   }
 
-  function parseCMap(cMap, lexer, builtInCMapUrl, useCMap) {
+  function parseCMap(cMap, lexer, builtInCMapParams, useCMap) {
     var previous;
     var embededUseCMap;
     objLoop: while (true) {
@@ -463,28 +771,41 @@ var CMapFactory = (function CMapFactoryClosure() {
       useCMap = embededUseCMap;
     }
     if (useCMap) {
-      cMap.useCMap = createBuiltInCMap(useCMap, builtInCMapUrl);
-      // If there aren't any code space ranges defined clone all the parent ones
-      // into this cMap.
-      if (cMap.numCodespaceRanges === 0) {
-        var useCodespaceRanges = cMap.useCMap.codespaceRanges;
-        for (var i = 0; i < useCodespaceRanges.length; i++) {
-          cMap.codespaceRanges[i] = useCodespaceRanges[i].slice();
-        }
-        cMap.numCodespaceRanges = cMap.useCMap.numCodespaceRanges;
+      extendCMap(cMap, builtInCMapParams, useCMap);
+    }
+  }
+
+  function extendCMap(cMap, builtInCMapParams, useCMap) {
+    cMap.useCMap = createBuiltInCMap(useCMap, builtInCMapParams);
+    // If there aren't any code space ranges defined clone all the parent ones
+    // into this cMap.
+    if (cMap.numCodespaceRanges === 0) {
+      var useCodespaceRanges = cMap.useCMap.codespaceRanges;
+      for (var i = 0; i < useCodespaceRanges.length; i++) {
+        cMap.codespaceRanges[i] = useCodespaceRanges[i].slice();
       }
-      // Merge the map into the current one, making sure not to override
-      // any previously defined entries.
-      for (var key in cMap.useCMap.map) {
-        if (key in cMap.map) {
-          continue;
-        }
-        cMap.map[key] = cMap.useCMap.map[key];
+      cMap.numCodespaceRanges = cMap.useCMap.numCodespaceRanges;
+    }
+    // Merge the map into the current one, making sure not to override
+    // any previously defined entries.
+    for (var key in cMap.useCMap.map) {
+      if (key in cMap.map) {
+        continue;
       }
+      cMap.map[key] = cMap.useCMap.map[key];
     }
   }
 
-  function createBuiltInCMap(name, builtInCMapUrl) {
+  function parseBinaryCMap(name, builtInCMapParams) {
+    var url = builtInCMapParams.url + name + '.bcmap';
+    var cMap = new CMap(true);
+    new BinaryCMapReader().read(url, cMap, function (useCMap) {
+      extendCMap(cMap, builtInCMapParams, useCMap);
+    });
+    return cMap;
+  }
+
+  function createBuiltInCMap(name, builtInCMapParams) {
     if (name === 'Identity-H') {
       return new IdentityCMap(false, 2);
     } else if (name === 'Identity-V') {
@@ -493,9 +814,14 @@ var CMapFactory = (function CMapFactoryClosure() {
     if (BUILT_IN_CMAPS.indexOf(name) === -1) {
       error('Unknown cMap name: ' + name);
     }
+    assert (builtInCMapParams, 'buildin cmap parameters are not provided');
+
+    if (builtInCMapParams.packed) {
+      return parseBinaryCMap(name, builtInCMapParams);
+    }
 
     var request = new XMLHttpRequest();
-    var url = builtInCMapUrl + name;
+    var url = builtInCMapParams.url + name;
     request.open('GET', url, false);
     request.send(null);
     if (request.status === 0 && /^https?:/i.test(url)) {
@@ -503,19 +829,19 @@ var CMapFactory = (function CMapFactoryClosure() {
     }
     var cMap = new CMap(true);
     var lexer = new Lexer(new StringStream(request.responseText));
-    parseCMap(cMap, lexer, builtInCMapUrl, null);
+    parseCMap(cMap, lexer, builtInCMapParams, null);
     return cMap;
   }
 
   return {
-    create: function (encoding, builtInCMapUrl, useCMap) {
+    create: function (encoding, builtInCMapParams, useCMap) {
       if (isName(encoding)) {
-        return createBuiltInCMap(encoding.name, builtInCMapUrl);
+        return createBuiltInCMap(encoding.name, builtInCMapParams);
       } else if (isStream(encoding)) {
         var cMap = new CMap();
         var lexer = new Lexer(encoding);
         try {
-          parseCMap(cMap, lexer, builtInCMapUrl, useCMap);
+          parseCMap(cMap, lexer, builtInCMapParams, useCMap);
         } catch (e) {
           warn('Invalid CMap data. ' + e);
         }

src/core/evaluator.js

@@ -1259,7 +1259,8 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
         if (isName(cidEncoding)) {
           properties.cidEncoding = cidEncoding.name;
         }
-        properties.cMap = CMapFactory.create(cidEncoding, PDFJS.cMapUrl, null);
+        properties.cMap = CMapFactory.create(cidEncoding,
+          { url: PDFJS.cMapUrl, packed: PDFJS.cMapPacked }, null);
         properties.vertical = properties.cMap.vertical;
       }
       this.extractDataStructures(dict, baseDict, xref, properties);

src/core/fonts.js

@@ -4223,7 +4223,8 @@ var Font = (function FontClosure() {
         var ucs2CMapName = new Name(registry + '-' + ordering + '-UCS2');
         // d) Obtain the CMap with the name constructed in step (c) (available
         // from the ASN Web site; see the Bibliography).
-        var ucs2CMap = CMapFactory.create(ucs2CMapName, PDFJS.cMapUrl, null);
+        var ucs2CMap = CMapFactory.create(ucs2CMapName,
+          { url: PDFJS.cMapUrl, packed: PDFJS.cMapPacked }, null);
         var cMap = properties.cMap;
         var toUnicode = [];
         for (var charcode in cMap.map) {

src/core/worker.js

@@ -241,6 +241,7 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = {
       PDFJS.verbosity = data.verbosity;
       PDFJS.cMapUrl = data.cMapUrl === undefined ?
                            null : data.cMapUrl;
+      PDFJS.cMapPacked = data.cMapPacked === true;
 
       getPdfManager(data).then(function () {
         pdfManager.onLoadedStream().then(function(stream) {

src/display/api.js

@@ -36,6 +36,12 @@ PDFJS.maxImageSize = PDFJS.maxImageSize === undefined ? -1 : PDFJS.maxImageSize;
  */
 PDFJS.cMapUrl = PDFJS.cMapUrl === undefined ? null : PDFJS.cMapUrl;
 
+/**
+ * Specifies if CMaps are binary packed.
+ * @var {boolean}
+ */
+PDFJS.cMapPacked = PDFJS.cMapPacked === undefined ? false : PDFJS.cMapPacked;
+
 /*
  * By default fonts are converted to OpenType fonts and loaded via font face
  * rules. If disabled, the font will be rendered using a built in font renderer
@@ -942,6 +948,7 @@ var WorkerTransport = (function WorkerTransportClosure() {
         disableRange: PDFJS.disableRange,
         maxImageSize: PDFJS.maxImageSize,
         cMapUrl: PDFJS.cMapUrl,
+        cMapPacked: PDFJS.cMapPacked,
         disableFontFace: PDFJS.disableFontFace,
         disableCreateObjectURL: PDFJS.disableCreateObjectURL,
         verbosity: PDFJS.verbosity

test/driver.js

@@ -28,7 +28,8 @@
 //   "firefox-bin: Fatal IO error 12 (Cannot allocate memory) on X server :1."
 // PDFJS.disableWorker = true;
 PDFJS.enableStats = true;
-PDFJS.cMapUrl = '../external/cmaps/';
+PDFJS.cMapUrl = '../web/cmaps/';
+PDFJS.cMapPacked = true;
 
 var appPath, masterMode, browser, canvas, dummyCanvas, currentTaskIdx,
     manifest, stdout;

test/test.py

@@ -105,6 +105,7 @@ MIMEs = {
     '.ico': 'image/x-icon',
     '.png': 'image/png',
     '.log': 'text/plain',
+    '.bcmap': 'application/octet-stream',
     '.properties': 'text/plain'
 }
 

web/.gitignore

@@ -1,3 +1,4 @@
 viewer-production.html
 locale.properties
-locale/
+locale/
+cmaps/

web/viewer.js

@@ -66,6 +66,7 @@ PDFJS.imageResourcesPath = './images/';
 PDFJS.cMapUrl = '../external/cmaps/';
 //#else
 //PDFJS.cMapUrl = '../web/cmaps/';
+//PDFJS.cMapPacked = true;
 //#endif
 
 var mozL10n = document.mozL10n || document.webL10n;