Sakurai/pdf.js
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Merge remote-tracking branch 'upstream/master'

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This commit is contained in:
Kalervo Kujala 2011-08-25 20:14:04 +03:00
commit 9343df134d
3 changed files with 96 additions and 54 deletions
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2
crypto.js
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@ -543,7 +543,7 @@ var CipherTransformFactory = (function() {
key[i++] = 0x54;
}
var hash = md5(key, 0, i);
return hash.subarray(0, Math.min(key.length, 16));
return hash.subarray(0, Math.min(encryptionKey.length + 5, 16));
}
function buildCipherConstructor(cf, name, num, gen, key) {

79
fonts.js
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@ -1284,8 +1284,6 @@ var Font = (function Font() {
var charcode = chars.charCodeAt(i);
var unicode = encoding[charcode];
if ('undefined' == typeof(unicode)) {
// FIXME/issue 233: we're hitting this in test/pdf/sizes.pdf
// at the moment, for unknown reasons.
warn('Unencoded charcode ' + charcode);
unicode = charcode;
}
@ -1485,16 +1483,22 @@ var Type1Parser = function() {
// TODO Clean this code
if (value == 13) {
if (charstring.length == 2) {
lsb = charstring[0];
width = charstring[1];
charstring.splice(0, 1);
} else if (charstring.length == 4 && charstring[3] == 'div') {
lsb = charstring[0];
width = charstring[1] / charstring[2];
charstring.splice(0, 1);
} else if (charstring.length == 4 && charstring[2] == 'div') {
lsb = charstring[0] / charstring[1];
width = charstring[3];
charstring.splice(0, 3);
} else {
error('Unsupported hsbw format: ' + charstring);
}
lsb = charstring[0];
charstring.push(lsb, 'hmoveto');
charstring.splice(0, 1);
continue;
}
command = charStringDictionary[value];
@ -1584,13 +1588,12 @@ var Type1Parser = function() {
while (i < count && (eexecStr[i] == ' ' || eexecStr[i] == '\n'))
++i;
var t = '';
var token = '';
while (i < count && !(eexecStr[i] == ' ' || eexecStr[i] == '\n'))
t += eexecStr[i++];
return t;
}
token += eexecStr[i++];
return token;
};
var c = eexecStr[i];
if ((glyphsSection || subrsSection) && c == 'R') {
@ -1674,18 +1677,28 @@ var Type1Parser = function() {
return program;
},
this.extractFontHeader = function t1_extractFontProgram(stream) {
this.extractFontHeader = function t1_extractFontHeader(stream, properties) {
var headerString = '';
for (var i = 0; i < stream.length; i++)
headerString += String.fromCharCode(stream[i]);
var info = {
textMatrix: null
};
var token = '';
var count = headerString.length;
for (var i = 0; i < count; i++) {
var getToken = function() {
var char = headerString[i];
while (i < count && (char == ' ' || char == '\n' || char == '/'))
char = headerString[++i];
var token = '';
while (i < count && !(char == ' ' || char == '\n' || char == '/')) {
token += char;
char = headerString[++i];
}
return token;
};
var c = headerString[i];
if (c == ' ' || c == '\n') {
switch (token) {
@ -1699,7 +1712,25 @@ var Type1Parser = function() {
// Make the angle into the right direction
matrix[2] *= -1;
info.textMatrix = matrix;
properties.textMatrix = matrix;
break;
case '/Encoding':
if (!properties.builtInEncoding)
break;
var size = parseInt(getToken());
getToken(); // read in 'array'
for (var j = 0; j < size; j++) {
var token = getToken();
if (token == 'dup') {
var index = parseInt(getToken());
var glyph = getToken();
properties.encoding[index] = GlyphsUnicode[glyph];
getToken(); // read the in 'put'
j = index;
}
}
break;
}
token = '';
@ -1707,8 +1738,6 @@ var Type1Parser = function() {
token += c;
}
}
return info;
};
};
@ -1792,13 +1821,11 @@ var CFF = function(name, file, properties) {
var length2 = file.dict.get('Length2');
var headerBlock = file.getBytes(length1);
var header = type1Parser.extractFontHeader(headerBlock);
for (var info in header)
properties[info] = header[info];
type1Parser.extractFontHeader(headerBlock, properties);
// Decrypt the data blocks and retrieve it's content
var eexecBlock = file.getBytes(length2);
var data = type1Parser.extractFontProgram(eexecBlock);
var data = type1Parser.extractFontProgram(eexecBlock, properties);
for (var info in data.properties)
properties[info] = data.properties[info];
@ -1868,15 +1895,14 @@ CFF.prototype = {
getOrderedCharStrings: function cff_getOrderedCharStrings(glyphs) {
var charstrings = [];
var missings = [];
for (var i = 0; i < glyphs.length; i++) {
var glyph = glyphs[i];
var unicode = GlyphsUnicode[glyph.glyph];
if (!unicode) {
if (glyph.glyph != '.notdef') {
warn(glyph.glyph +
' does not have an entry in the glyphs unicode dictionary');
}
if (glyph.glyph != '.notdef')
missings.push(glyph.glyph);
} else {
charstrings.push({
glyph: glyph,
@ -1888,6 +1914,9 @@ CFF.prototype = {
}
}
if (missings.length)
warn(missings + ' does not have unicode in the glyphs dictionary');
charstrings.sort(function charstrings_sort(a, b) {
return a.unicode - b.unicode;
});

69
pdf.js
View File

@ -208,6 +208,11 @@ var DecodeStream = (function() {
this.readBlock();
var end = this.bufferLength;
// checking if bufferLength is still 0 then
// the buffer has to be initialized
if (!end)
this.buffer = new Uint8Array(0);
}
this.pos = end;
@ -3340,11 +3345,11 @@ var Page = (function() {
var xref = this.xref;
var content = xref.fetchIfRef(this.content);
var resources = xref.fetchIfRef(this.resources);
if (IsArray(this.content)) {
if (IsArray(content)) {
// fetching items
var i, n = content.length;
for (i = 0; i < n; ++i)
content[i] = xref.fetchIfRef(this.content[i]);
content[i] = xref.fetchIfRef(content[i]);
content = new StreamsSequenceStream(content);
}
this.code = gfx.compile(content, xref, resources, fonts, images);
@ -4191,6 +4196,7 @@ var PartialEvaluator = (function() {
fd = fontDict.get('FontDescriptor');
}
var builtInEncoding = false;
var encodingMap = {};
var glyphMap = {};
var charset = [];
@ -4261,9 +4267,11 @@ var PartialEvaluator = (function() {
if (!baseEncoding) {
var type = subType.name;
if (type == 'TrueType') {
baseEncoding = Encodings.WinAnsiEncoding.slice(0);
baseEncoding = Encodings.WinAnsiEncoding.slice();
} else if (type == 'Type1') {
baseEncoding = Encodings.StandardEncoding.slice(0);
baseEncoding = Encodings.StandardEncoding.slice();
if (!diffEncoding.length)
builtInEncoding = true;
} else {
error('Unknown type of font');
}
@ -4285,6 +4293,7 @@ var PartialEvaluator = (function() {
}
if (fontDict.has('ToUnicode')) {
encodingMap['empty'] = true;
var cmapObj = xref.fetchIfRef(fontDict.get('ToUnicode'));
if (IsName(cmapObj)) {
error('ToUnicode file cmap translation not implemented');
@ -4419,6 +4428,7 @@ var PartialEvaluator = (function() {
subtype: fileType,
widths: glyphWidths,
encoding: encodingMap,
builtInEncoding: builtInEncoding,
charset: charset,
firstChar: fontDict.get('FirstChar'),
lastChar: fontDict.get('LastChar'),
@ -5102,15 +5112,18 @@ var CanvasGraphics = (function() {
var tmpCanvas = new this.ScratchCanvas(w, h);
var tmpCtx = tmpCanvas.getContext('2d');
if (imageObj.imageMask) {
var fillColor = this.current.fillColor;
tmpCtx.fillStyle = (fillColor && fillColor.type === 'Pattern') ?
fillColor.getPattern(tmpCtx) : fillColor;
tmpCtx.fillRect(0, 0, w, h);
}
var imgData = tmpCtx.getImageData(0, 0, w, h);
var pixels = imgData.data;
if (imageObj.imageMask) {
var inverseDecode = imageObj.decode && imageObj.decode[0] > 0;
// TODO fillColor pattern support
var fillColor = this.current.fillColor;
imageObj.fillUsingStencilMask(pixels, fillColor,
inverseDecode);
var inverseDecode = !!imageObj.decode && imageObj.decode[0] > 0;
imageObj.applyStencilMask(pixels, inverseDecode);
} else
imageObj.fillRgbaBuffer(pixels);
@ -5990,26 +6003,26 @@ var PDFImage = (function() {
}
return buf;
},
fillUsingStencilMask: function fillUsingStencilMask(buffer,
cssRgb, inverseDecode) {
var m = /rgb\((\d+),(\d+),(\d+)\)/.exec(cssRgb); // parse CSS color
var r = m[1] | 0, g = m[2] | 0, b = m[3] | 0;
var bufferLength = this.width * this.height;
var imgArray = this.image.getBytes((bufferLength + 7) >> 3);
var i, mask;
var bufferPos = 0, imgArrayPos = 0;
for (i = 0; i < bufferLength; i++) {
var buf = imgArray[imgArrayPos++];
for (mask = 128; mask > 0; mask >>= 1) {
if (!(buf & mask) != inverseDecode) {
buffer[bufferPos++] = r;
buffer[bufferPos++] = g;
buffer[bufferPos++] = b;
buffer[bufferPos++] = 255;
} else {
buffer[bufferPos + 3] = 0;
bufferPos += 4;
applyStencilMask: function applyStencilMask(buffer, inverseDecode) {
var width = this.width, height = this.height;
var bitStrideLength = (width + 7) >> 3;
var imgArray = this.image.getBytes(bitStrideLength * height);
var imgArrayPos = 0;
var i, j, mask, buf;
// removing making non-masked pixels transparent
var bufferPos = 3; // alpha component offset
for (i = 0; i < height; i++) {
mask = 0;
for (j = 0; j < width; j++) {
if (!mask) {
buf = imgArray[imgArrayPos++];
mask = 128;
}
if (!(buf & mask) == inverseDecode) {
buffer[bufferPos] = 0;
}
bufferPos += 4;
mask >>= 1;
}
}
},