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Make CMap.map quasi-private.

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This makes it easier for the representation to be improved.
This commit is contained in:
Nicholas Nethercote 2014-07-29 20:30:16 -07:00
parent 1e52c770d9
commit b86daed29d
3 changed files with 44 additions and 30 deletions
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38
src/core/cmap.js
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@ -199,7 +199,7 @@ var CMap = (function CMapClosure() {
// where nBytePairs are ranges e.g. [low1, high1, low2, high2, ...]
this.codespaceRanges = [[], [], [], []];
this.numCodespaceRanges = 0;
this.map = [];
this._map = [];
this.vertical = false;
this.useCMap = null;
this.builtInCMap = builtInCMap;
@ -213,7 +213,7 @@ var CMap = (function CMapClosure() {
mapRange: function(low, high, dstLow) {
var lastByte = dstLow.length - 1;
while (low <= high) {
this.map[low] = dstLow;
this._map[low] = dstLow;
// Only the last byte has to be incremented.
dstLow = dstLow.substr(0, lastByte) +
String.fromCharCode(dstLow.charCodeAt(lastByte) + 1);
@ -224,17 +224,36 @@ var CMap = (function CMapClosure() {
mapRangeToArray: function(low, high, array) {
var i = 0, ii = array.length;
while (low <= high && i < ii) {
this.map[low] = array[i++];
this._map[low] = array[i++];
++low;
}
},
mapOne: function(src, dst) {
this.map[src] = dst;
this._map[src] = dst;
},
lookup: function(code) {
return this.map[code];
return this._map[code];
},
contains: function(code) {
return this._map[code] !== undefined;
},
forEach: function(callback) {
var map = this._map;
for (var key in this._map) {
callback(key, map[key]);
}
},
charCodeOf: function(value) {
return this._map.indexOf(value);
},
getMap: function() {
return this._map;
},
readCharCode: function(str, offset) {
@ -789,12 +808,11 @@ var CMapFactory = (function CMapFactoryClosure() {
}
// 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.useCMap.forEach(function(key, value) {
if (!cMap.contains(key)) {
cMap.mapOne(key, cMap.useCMap.lookup(key));
}
cMap.map[key] = cMap.useCMap.map[key];
}
});
}
function parseBinaryCMap(name, builtInCMapParams) {