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Typr 库 greasy fork 镜像
Tính đến
Script này sẽ không được không được cài đặt trực tiếp. Nó là một thư viện cho các script khác để bao gồm các chỉ thị meta
// @require https://update.greasyfork.org/scripts/466179/1189953/Typr%E5%BA%93.js
var Typr = {};
Typr["parse"] = function(buff)
{
var readFont = function(data, idx, offset,tmap) {
var bin = Typr["B"];
var T = Typr["T"];
var prsr = {
"cmap":T.cmap,
"head":T.head,
"hhea":T.hhea,
"maxp":T.maxp,
"hmtx":T.hmtx,
"name":T.name,
"OS/2":T.OS2,
"post":T.post,
"loca":T.loca,
"kern":T.kern,
"glyf":T.glyf,
"CFF ":T.CFF,
/*
"GPOS",
"GSUB",
"GDEF",*/
"SVG ":T.SVG
//"VORG",
};
var obj = {"_data":data, "_index":idx, "_offset":offset};
for(var t in prsr) {
var tab = Typr["findTable"](data, t, offset);
if(tab) {
var off=tab[0], tobj = tmap[off];
if(tobj==null) tobj = prsr[t].parseTab(data, off, tab[1], obj);
obj[t] = tmap[off] = tobj;
}
}
return obj;
}
var bin = Typr["B"];
var data = new Uint8Array(buff);
var tmap = {};
var tag = bin.readASCII(data, 0, 4);
if(tag=="ttcf") {
var offset = 4;
var majV = bin.readUshort(data, offset); offset+=2;
var minV = bin.readUshort(data, offset); offset+=2;
var numF = bin.readUint (data, offset); offset+=4;
var fnts = [];
for(var i=0; i<numF; i++) {
var foff = bin.readUint (data, offset); offset+=4;
fnts.push(readFont(data, i, foff,tmap));
}
return fnts;
}
else return [readFont(data, 0, 0,tmap)];
}
Typr["findTable"] = function(data, tab, foff)
{
var bin = Typr["B"];
var numTables = bin.readUshort(data, foff+4);
var offset = foff+12;
for(var i=0; i<numTables; i++)
{
var tag = bin.readASCII(data, offset, 4);
var checkSum = bin.readUint (data, offset+ 4);
var toffset = bin.readUint (data, offset+ 8);
var length = bin.readUint (data, offset+12);
if(tag==tab) return [toffset,length];
offset+=16;
}
return null;
}
/*
Typr["splitBy"] = function(data,tag) {
data = new Uint8Array(data); console.log(data.slice(0,64));
var bin = Typr["B"];
var ttcf = bin.readASCII(data, 0, 4); if(ttcf!="ttcf") return {};
var offset = 8;
var numF = bin.readUint (data, offset); offset+=4;
var colls = [], used={};
for(var i=0; i<numF; i++) {
var foff = bin.readUint (data, offset); offset+=4;
var toff = Typr["findTable"](data,tag,foff)[0];
if(used[toff]==null) used[toff] = [];
used[toff].push([foff,bin.readUshort(data,foff+4)]); // font offset, numTables
}
for(var toff in used) {
var offs = used[toff];
var hlen = 12+4*offs.length;
var out = new Uint8Array(hlen);
for(var i=0; i<8; i++) out[i]=data[i];
bin.writeUint(out,8,offs.length);
for(var i=0; i<offs.length; i++) hlen += 12+offs[i][1]*16;
var hdrs = [out], tabs = [], hoff=out.length, toff=hlen, noffs={};
for(var i=0; i<offs.length; i++) {
bin.writeUint(out, 12+i*4, hoff); hoff+=12+offs[i][1]*16;
toff = Typr["_cutFont"](data, offs[i][0], hdrs, tabs, toff, noffs);
}
colls.push(Typr["_joinArrs"](hdrs.concat(tabs)));
}
return colls;
}
Typr["splitFonts"] = function(data) {
data = new Uint8Array(data);
var bin = Typr["B"];
var ttcf = bin.readASCII(data, 0, 4); if(ttcf!="ttcf") return {};
var offset = 8;
var numF = bin.readUint (data, offset); offset+=4;
var fnts = [];
for(var i=0; i<numF; i++) {
var foff = bin.readUint (data, offset); offset+=4;
fnts.push(Typr._cutFont(data, foff));
break;
}
return fnts;
}
Typr["_cutFont"] = function(data,foff,hdrs,tabs,toff, noffs) {
var bin = Typr["B"];
var numTables = bin.readUshort(data, foff+4);
var out = new Uint8Array(12+numTables*16); hdrs.push(out);
for(var i=0; i<12; i++) out[i]=data[foff+i]; //console.log(out);
var off = 12;
for(var i=0; i<numTables; i++)
{
var tag = bin.readASCII(data, foff+off, 4);
var checkSum = bin.readUint (data, foff+off+ 4);
var toffset = bin.readUint (data, foff+off+ 8);
var length = bin.readUint (data, foff+off+12);
while((length&3)!=0) length++;
for(var j=0; j<16; j++) out[off+j]=data[foff+off+j];
if(noffs[toffset]!=null) bin.writeUint(out,off+8,noffs[toffset]);
else {
noffs[toffset] = toff;
bin.writeUint(out, off+8, toff);
tabs.push(new Uint8Array(data.buffer, toffset, length)); toff+=length;
}
off+=16;
}
return toff;
}
Typr["_joinArrs"] = function(tabs) {
var len = 0;
for(var i=0; i<tabs.length; i++) len+=tabs[i].length;
var out = new Uint8Array(len), ooff=0;
for(var i=0; i<tabs.length; i++) {
var tab = tabs[i];
for(var j=0; j<tab.length; j++) out[ooff+j]=tab[j];
ooff+=tab.length;
}
return out;
}
*/
Typr["T"]={};
Typr["B"] = {
readFixed : function(data, o)
{
return ((data[o]<<8) | data[o+1]) + (((data[o+2]<<8)|data[o+3])/(256*256+4));
},
readF2dot14 : function(data, o)
{
var num = Typr["B"].readShort(data, o);
return num / 16384;
},
readInt : function(buff, p)
{
//if(p>=buff.length) throw "error";
var a = Typr["B"].t.uint8;
a[0] = buff[p+3];
a[1] = buff[p+2];
a[2] = buff[p+1];
a[3] = buff[p];
return Typr["B"].t.int32[0];
},
readInt8 : function(buff, p)
{
//if(p>=buff.length) throw "error";
var a = Typr["B"].t.uint8;
a[0] = buff[p];
return Typr["B"].t.int8[0];
},
readShort : function(buff, p)
{
//if(p>=buff.length) throw "error";
var a = Typr["B"].t.uint8;
a[1] = buff[p]; a[0] = buff[p+1];
return Typr["B"].t.int16[0];
},
readUshort : function(buff, p)
{
//if(p>=buff.length) throw "error";
return (buff[p]<<8) | buff[p+1];
},
writeUshort : function(buff, p, n)
{
buff[p] = (n>>8)&255; buff[p+1] = n&255;
},
readUshorts : function(buff, p, len)
{
var arr = [];
for(var i=0; i<len; i++) {
var v = Typr["B"].readUshort(buff, p+i*2); //if(v==932) console.log(p+i*2);
arr.push(v);
}
return arr;
},
readUint : function(buff, p)
{
//if(p>=buff.length) throw "error";
var a = Typr["B"].t.uint8;
a[3] = buff[p]; a[2] = buff[p+1]; a[1] = buff[p+2]; a[0] = buff[p+3];
return Typr["B"].t.uint32[0];
},
writeUint: function(buff, p, n)
{
buff[p] = (n>>24)&255; buff[p+1] = (n>>16)&255; buff[p+2] = (n>>8)&255; buff[p+3] = (n>>0)&255;
},
readUint64 : function(buff, p)
{
//if(p>=buff.length) throw "error";
return (Typr["B"].readUint(buff, p)*(0xffffffff+1)) + Typr["B"].readUint(buff, p+4);
},
readASCII : function(buff, p, l) // l : length in Characters (not Bytes)
{
//if(p>=buff.length) throw "error";
var s = "";
for(var i = 0; i < l; i++) s += String.fromCharCode(buff[p+i]);
return s;
},
writeASCII : function(buff, p, s) // l : length in Characters (not Bytes)
{
for(var i = 0; i < s.length; i++)
buff[p+i] = s.charCodeAt(i);
},
readUnicode : function(buff, p, l)
{
//if(p>=buff.length) throw "error";
var s = "";
for(var i = 0; i < l; i++)
{
var c = (buff[p++]<<8) | buff[p++];
s += String.fromCharCode(c);
}
return s;
},
_tdec : window["TextDecoder"] ? new window["TextDecoder"]() : null,
readUTF8 : function(buff, p, l) {
var tdec = Typr["B"]._tdec;
if(tdec && p==0 && l==buff.length) return tdec["decode"](buff);
return Typr["B"].readASCII(buff,p,l);
},
readBytes : function(buff, p, l)
{
//if(p>=buff.length) throw "error";
var arr = [];
for(var i=0; i<l; i++) arr.push(buff[p+i]);
return arr;
},
readASCIIArray : function(buff, p, l) // l : length in Characters (not Bytes)
{
//if(p>=buff.length) throw "error";
var s = [];
for(var i = 0; i < l; i++)
s.push(String.fromCharCode(buff[p+i]));
return s;
},
t : function() {
var ab = new ArrayBuffer(8);
return {
buff : ab,
int8 : new Int8Array (ab),
uint8 : new Uint8Array (ab),
int16 : new Int16Array (ab),
uint16 : new Uint16Array(ab),
int32 : new Int32Array (ab),
uint32 : new Uint32Array(ab)
}
}()
};
Typr["T"].CFF = {
parseTab : function(data, offset, length)
{
var bin = Typr["B"];
var CFF = Typr["T"].CFF;
data = new Uint8Array(data.buffer, offset, length);
offset = 0;
// Header
var major = data[offset]; offset++;
var minor = data[offset]; offset++;
var hdrSize = data[offset]; offset++;
var offsize = data[offset]; offset++;
//console.log(major, minor, hdrSize, offsize);
// Name INDEX
var ninds = [];
offset = CFF.readIndex(data, offset, ninds);
var names = [];
for(var i=0; i<ninds.length-1; i++) names.push(bin.readASCII(data, offset+ninds[i], ninds[i+1]-ninds[i]));
offset += ninds[ninds.length-1];
// Top DICT INDEX
var tdinds = [];
offset = CFF.readIndex(data, offset, tdinds); //console.log(tdinds);
// Top DICT Data
var topDicts = [];
for(var i=0; i<tdinds.length-1; i++) topDicts.push( CFF.readDict(data, offset+tdinds[i], offset+tdinds[i+1]) );
offset += tdinds[tdinds.length-1];
var topdict = topDicts[0];
//console.log(topdict);
// String INDEX
var sinds = [];
offset = CFF.readIndex(data, offset, sinds);
// String Data
var strings = [];
for(var i=0; i<sinds.length-1; i++) strings.push(bin.readASCII(data, offset+sinds[i], sinds[i+1]-sinds[i]));
offset += sinds[sinds.length-1];
// Global Subr INDEX (subroutines)
CFF.readSubrs(data, offset, topdict);
// charstrings
if(topdict["CharStrings"]) topdict["CharStrings"] = CFF.readBytes(data, topdict["CharStrings"]);
// CID font
if(topdict["ROS"]) {
offset = topdict["FDArray"];
var fdind = [];
offset = CFF.readIndex(data, offset, fdind);
topdict["FDArray"] = [];
for(var i=0; i<fdind.length-1; i++) {
var dict = CFF.readDict(data, offset+fdind[i], offset+fdind[i+1]);
CFF._readFDict(data, dict, strings);
topdict["FDArray"].push( dict );
}
offset += fdind[fdind.length-1];
offset = topdict["FDSelect"];
topdict["FDSelect"] = [];
var fmt = data[offset]; offset++;
if(fmt==3) {
var rns = bin.readUshort(data, offset); offset+=2;
for(var i=0; i<rns+1; i++) {
topdict["FDSelect"].push(bin.readUshort(data, offset), data[offset+2]); offset+=3;
}
}
else throw fmt;
}
// Encoding
//if(topdict["Encoding"]) topdict["Encoding"] = CFF.readEncoding(data, topdict["Encoding"], topdict["CharStrings"].length);
// charset
if(topdict["charset"] ) topdict["charset"] = CFF.readCharset (data, topdict["charset"] , topdict["CharStrings"].length);
CFF._readFDict(data, topdict, strings);
return topdict;
},
_readFDict : function(data, dict, ss) {
var CFF = Typr["T"].CFF;
var offset;
if(dict["Private"]) {
offset = dict["Private"][1];
dict["Private"] = CFF.readDict(data, offset, offset+dict["Private"][0]);
if(dict["Private"]["Subrs"]) CFF.readSubrs(data, offset+dict["Private"]["Subrs"], dict["Private"]);
}
for(var p in dict) if(["FamilyName","FontName","FullName","Notice","version","Copyright"].indexOf(p)!=-1) dict[p]=ss[dict[p] -426 + 35];
},
readSubrs : function(data, offset, obj)
{
obj["Subrs"] = Typr["T"].CFF.readBytes(data, offset);
var bias, nSubrs = obj["Subrs"].length+1;
if (false) bias = 0;
else if (nSubrs < 1240) bias = 107;
else if (nSubrs < 33900) bias = 1131;
else bias = 32768;
obj["Bias"] = bias;
},
readBytes : function(data, offset) {
var bin = Typr["B"];
var arr = [];
offset = Typr["T"].CFF.readIndex(data, offset, arr);
var subrs = [], arl = arr.length-1, no = data.byteOffset+offset;
for(var i=0; i<arl; i++) {
var ari = arr[i];
subrs.push(new Uint8Array(data.buffer, no+ari, arr[i+1]-ari));
}
return subrs;
},
tableSE : [
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
1, 2, 3, 4, 5, 6, 7, 8,
9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31, 32,
33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48,
49, 50, 51, 52, 53, 54, 55, 56,
57, 58, 59, 60, 61, 62, 63, 64,
65, 66, 67, 68, 69, 70, 71, 72,
73, 74, 75, 76, 77, 78, 79, 80,
81, 82, 83, 84, 85, 86, 87, 88,
89, 90, 91, 92, 93, 94, 95, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 96, 97, 98, 99, 100, 101, 102,
103, 104, 105, 106, 107, 108, 109, 110,
0, 111, 112, 113, 114, 0, 115, 116,
117, 118, 119, 120, 121, 122, 0, 123,
0, 124, 125, 126, 127, 128, 129, 130,
131, 0, 132, 133, 0, 134, 135, 136,
137, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 138, 0, 139, 0, 0, 0, 0,
140, 141, 142, 143, 0, 0, 0, 0,
0, 144, 0, 0, 0, 145, 0, 0,
146, 147, 148, 149, 0, 0, 0, 0
],
glyphByUnicode : function(cff, code)
{
for(var i=0; i<cff["charset"].length; i++) if(cff["charset"][i]==code) return i;
return -1;
},
glyphBySE : function(cff, charcode) // glyph by standard encoding
{
if ( charcode < 0 || charcode > 255 ) return -1;
return Typr["T"].CFF.glyphByUnicode(cff, Typr["T"].CFF.tableSE[charcode]);
},
/*readEncoding : function(data, offset, num)
{
var bin = Typr["B"];
var array = ['.notdef'];
var format = data[offset]; offset++;
//console.log("Encoding");
//console.log(format);
if(format==0)
{
var nCodes = data[offset]; offset++;
for(var i=0; i<nCodes; i++) array.push(data[offset+i]);
}
/*
else if(format==1 || format==2)
{
while(charset.length<num)
{
var first = bin.readUshort(data, offset); offset+=2;
var nLeft=0;
if(format==1) { nLeft = data[offset]; offset++; }
else { nLeft = bin.readUshort(data, offset); offset+=2; }
for(var i=0; i<=nLeft; i++) { charset.push(first); first++; }
}
}
else throw "error: unknown encoding format: " + format;
return array;
},*/
readCharset : function(data, offset, num)
{
var bin = Typr["B"];
var charset = ['.notdef'];
var format = data[offset]; offset++;
if(format==0)
{
for(var i=0; i<num; i++)
{
var first = bin.readUshort(data, offset); offset+=2;
charset.push(first);
}
}
else if(format==1 || format==2)
{
while(charset.length<num)
{
var first = bin.readUshort(data, offset); offset+=2;
var nLeft=0;
if(format==1) { nLeft = data[offset]; offset++; }
else { nLeft = bin.readUshort(data, offset); offset+=2; }
for(var i=0; i<=nLeft; i++) { charset.push(first); first++; }
}
}
else throw "error: format: " + format;
return charset;
},
readIndex : function(data, offset, inds)
{
var bin = Typr["B"];
var count = bin.readUshort(data, offset)+1; offset+=2;
var offsize = data[offset]; offset++;
if (offsize==1) for(var i=0; i<count; i++) inds.push( data[offset+i] );
else if(offsize==2) for(var i=0; i<count; i++) inds.push( bin.readUshort(data, offset+i*2) );
else if(offsize==3) for(var i=0; i<count; i++) inds.push( bin.readUint (data, offset+i*3 - 1) & 0x00ffffff );
else if(offsize==4) for(var i=0; i<count; i++) inds.push( bin.readUint (data, offset+i*4) );
else if(count!=1) throw "unsupported offset size: " + offsize + ", count: " + count;
offset += count*offsize;
return offset-1;
},
getCharString : function(data, offset, o)
{
var bin = Typr["B"];
var b0 = data[offset], b1 = data[offset+1], b2 = data[offset+2], b3 = data[offset+3], b4=data[offset+4];
var vs = 1;
var op=null, val=null;
// operand
if(b0<=20) { op = b0; vs=1; }
if(b0==12) { op = b0*100+b1; vs=2; }
//if(b0==19 || b0==20) { op = b0/*+" "+b1*/; vs=2; }
if(21 <=b0 && b0<= 27) { op = b0; vs=1; }
if(b0==28) { val = bin.readShort(data,offset+1); vs=3; }
if(29 <=b0 && b0<= 31) { op = b0; vs=1; }
if(32 <=b0 && b0<=246) { val = b0-139; vs=1; }
if(247<=b0 && b0<=250) { val = (b0-247)*256+b1+108; vs=2; }
if(251<=b0 && b0<=254) { val =-(b0-251)*256-b1-108; vs=2; }
if(b0==255) { val = bin.readInt(data, offset+1)/0xffff; vs=5; }
o.val = val!=null ? val : "o"+op;
o.size = vs;
},
readCharString : function(data, offset, length)
{
var end = offset + length;
var bin = Typr["B"];
var arr = [];
while(offset<end)
{
var b0 = data[offset], b1 = data[offset+1], b2 = data[offset+2], b3 = data[offset+3], b4=data[offset+4];
var vs = 1;
var op=null, val=null;
// operand
if(b0<=20) { op = b0; vs=1; }
if(b0==12) { op = b0*100+b1; vs=2; }
if(b0==19 || b0==20) { op = b0/*+" "+b1*/; vs=2; }
if(21 <=b0 && b0<= 27) { op = b0; vs=1; }
if(b0==28) { val = bin.readShort(data,offset+1); vs=3; }
if(29 <=b0 && b0<= 31) { op = b0; vs=1; }
if(32 <=b0 && b0<=246) { val = b0-139; vs=1; }
if(247<=b0 && b0<=250) { val = (b0-247)*256+b1+108; vs=2; }
if(251<=b0 && b0<=254) { val =-(b0-251)*256-b1-108; vs=2; }
if(b0==255) { val = bin.readInt(data, offset+1)/0xffff; vs=5; }
arr.push(val!=null ? val : "o"+op);
offset += vs;
//var cv = arr[arr.length-1];
//if(cv==undefined) throw "error";
//console.log()
}
return arr;
},
readDict : function(data, offset, end)
{
var bin = Typr["B"];
//var dict = [];
var dict = {};
var carr = [];
while(offset<end)
{
var b0 = data[offset], b1 = data[offset+1], b2 = data[offset+2], b3 = data[offset+3], b4=data[offset+4];
var vs = 1;
var key=null, val=null;
// operand
if(b0==28) { val = bin.readShort(data,offset+1); vs=3; }
if(b0==29) { val = bin.readInt (data,offset+1); vs=5; }
if(32 <=b0 && b0<=246) { val = b0-139; vs=1; }
if(247<=b0 && b0<=250) { val = (b0-247)*256+b1+108; vs=2; }
if(251<=b0 && b0<=254) { val =-(b0-251)*256-b1-108; vs=2; }
if(b0==255) { val = bin.readInt(data, offset+1)/0xffff; vs=5; throw "unknown number"; }
if(b0==30)
{
var nibs = [];
vs = 1;
while(true)
{
var b = data[offset+vs]; vs++;
var nib0 = b>>4, nib1 = b&0xf;
if(nib0 != 0xf) nibs.push(nib0); if(nib1!=0xf) nibs.push(nib1);
if(nib1==0xf) break;
}
var s = "";
var chars = [0,1,2,3,4,5,6,7,8,9,".","e","e-","reserved","-","endOfNumber"];
for(var i=0; i<nibs.length; i++) s += chars[nibs[i]];
//console.log(nibs);
val = parseFloat(s);
}
if(b0<=21) // operator
{
var keys = ["version", "Notice", "FullName", "FamilyName", "Weight", "FontBBox", "BlueValues", "OtherBlues", "FamilyBlues","FamilyOtherBlues",
"StdHW", "StdVW", "escape", "UniqueID", "XUID", "charset", "Encoding", "CharStrings", "Private", "Subrs",
"defaultWidthX", "nominalWidthX"];
key = keys[b0]; vs=1;
if(b0==12) {
var keys = [ "Copyright", "isFixedPitch", "ItalicAngle", "UnderlinePosition", "UnderlineThickness", "PaintType", "CharstringType", "FontMatrix", "StrokeWidth", "BlueScale",
"BlueShift", "BlueFuzz", "StemSnapH", "StemSnapV", "ForceBold", "","", "LanguageGroup", "ExpansionFactor", "initialRandomSeed",
"SyntheticBase", "PostScript", "BaseFontName", "BaseFontBlend", "","","", "","","",
"ROS", "CIDFontVersion", "CIDFontRevision", "CIDFontType", "CIDCount", "UIDBase", "FDArray", "FDSelect", "FontName"];
key = keys[b1]; vs=2;
}
}
if(key!=null) { dict[key] = carr.length==1 ? carr[0] : carr; carr=[]; }
else carr.push(val);
offset += vs;
}
return dict;
}
};
Typr["T"].cmap = {
parseTab : function(data, offset, length)
{
var obj = {tables:[],ids:{},off:offset};
data = new Uint8Array(data.buffer, offset, length);
offset = 0;
var offset0 = offset;
var bin = Typr["B"], rU = bin.readUshort, cmap = Typr["T"].cmap;
var version = rU(data, offset); offset += 2;
var numTables = rU(data, offset); offset += 2;
//console.log(version, numTables);
var offs = [];
for(var i=0; i<numTables; i++)
{
var platformID = rU(data, offset); offset += 2;
var encodingID = rU(data, offset); offset += 2;
var noffset = bin.readUint(data, offset); offset += 4;
var id = "p"+platformID+"e"+encodingID;
//console.log("cmap subtable", platformID, encodingID, noffset);
var tind = offs.indexOf(noffset);
if(tind==-1)
{
tind = obj.tables.length;
var subt = {};
offs.push(noffset);
//var time = Date.now();
var format = subt.format = rU(data, noffset);
if (format== 0) subt = cmap.parse0(data, noffset, subt);
//else if(format== 2) subt.off = noffset;
else if(format== 4) subt = cmap.parse4(data, noffset, subt);
else if(format== 6) subt = cmap.parse6(data, noffset, subt);
else if(format==12) subt = cmap.parse12(data,noffset, subt);
//console.log(format, Date.now()-time);
//else console.log("unknown format: "+format, platformID, encodingID, noffset);
obj.tables.push(subt);
}
if(obj.ids[id]!=null) throw "multiple tables for one platform+encoding";
obj.ids[id] = tind;
}
return obj;
},
parse0 : function(data, offset, obj)
{
var bin = Typr["B"];
offset += 2;
var len = bin.readUshort(data, offset); offset += 2;
var lang = bin.readUshort(data, offset); offset += 2;
obj.map = [];
for(var i=0; i<len-6; i++) obj.map.push(data[offset+i]);
return obj;
},
parse4 : function(data, offset, obj)
{
var bin = Typr["B"], rU = bin.readUshort, rUs = bin.readUshorts;
var offset0 = offset;
offset+=2;
var length = rU(data, offset); offset+=2;
var language = rU(data, offset); offset+=2;
var segCountX2 = rU(data, offset); offset+=2;
var segCount = segCountX2>>>1;
obj.searchRange = rU(data, offset); offset+=2;
obj.entrySelector = rU(data, offset); offset+=2;
obj.rangeShift = rU(data, offset); offset+=2;
obj.endCount = rUs(data, offset, segCount); offset += segCount*2;
offset+=2;
obj.startCount = rUs(data, offset, segCount); offset += segCount*2;
obj.idDelta = [];
for(var i=0; i<segCount; i++) {obj.idDelta.push(bin.readShort(data, offset)); offset+=2;}
obj.idRangeOffset = rUs(data, offset, segCount); offset += segCount*2;
obj.glyphIdArray = rUs(data, offset, ((offset0+length)-offset)>>>1); //offset += segCount*2;
return obj;
},
parse6 : function(data, offset, obj)
{
var bin = Typr["B"];
var offset0 = offset;
offset+=2;
var length = bin.readUshort(data, offset); offset+=2;
var language = bin.readUshort(data, offset); offset+=2;
obj.firstCode = bin.readUshort(data, offset); offset+=2;
var entryCount = bin.readUshort(data, offset); offset+=2;
obj.glyphIdArray = [];
for(var i=0; i<entryCount; i++) {obj.glyphIdArray.push(bin.readUshort(data, offset)); offset+=2;}
return obj;
},
parse12 : function(data, offset, obj)
{
var bin = Typr["B"], rU = bin.readUint;
var offset0 = offset;
offset+=4;
var length = rU(data, offset); offset+=4;
var lang = rU(data, offset); offset+=4;
var nGroups= rU(data, offset)*3; offset+=4;
var gps = obj.groups = new Uint32Array(nGroups);//new Uint32Array(data.slice(offset, offset+nGroups*12).buffer);
for(var i=0; i<nGroups; i+=3) {
gps[i ] = rU(data, offset+(i<<2) );
gps[i+1] = rU(data, offset+(i<<2)+4);
gps[i+2] = rU(data, offset+(i<<2)+8);
}
return obj;
}
};
Typr["T"].glyf = {
parseTab : function(data, offset, length, font)
{
var obj = [], ng=font["maxp"]["numGlyphs"];
for(var g=0; g<ng; g++) obj.push(null);
return obj;
},
_parseGlyf : function(font, g)
{
var bin = Typr["B"];
var data = font["_data"], loca=font["loca"];
if(loca[g]==loca[g+1]) return null;
var offset = Typr["findTable"](data, "glyf", font["_offset"])[0] + loca[g];
var gl = {};
gl.noc = bin.readShort(data, offset); offset+=2; // number of contours
gl.xMin = bin.readShort(data, offset); offset+=2;
gl.yMin = bin.readShort(data, offset); offset+=2;
gl.xMax = bin.readShort(data, offset); offset+=2;
gl.yMax = bin.readShort(data, offset); offset+=2;
if(gl.xMin>=gl.xMax || gl.yMin>=gl.yMax) return null;
if(gl.noc>0)
{
gl.endPts = [];
for(var i=0; i<gl.noc; i++) { gl.endPts.push(bin.readUshort(data,offset)); offset+=2; }
var instructionLength = bin.readUshort(data,offset); offset+=2;
if((data.length-offset)<instructionLength) return null;
gl.instructions = bin.readBytes(data, offset, instructionLength); offset+=instructionLength;
var crdnum = gl.endPts[gl.noc-1]+1;
gl.flags = [];
for(var i=0; i<crdnum; i++ )
{
var flag = data[offset]; offset++;
gl.flags.push(flag);
if((flag&8)!=0)
{
var rep = data[offset]; offset++;
for(var j=0; j<rep; j++) { gl.flags.push(flag); i++; }
}
}
gl.xs = [];
for(var i=0; i<crdnum; i++) {
var i8=((gl.flags[i]&2)!=0), same=((gl.flags[i]&16)!=0);
if(i8) { gl.xs.push(same ? data[offset] : -data[offset]); offset++; }
else
{
if(same) gl.xs.push(0);
else { gl.xs.push(bin.readShort(data, offset)); offset+=2; }
}
}
gl.ys = [];
for(var i=0; i<crdnum; i++) {
var i8=((gl.flags[i]&4)!=0), same=((gl.flags[i]&32)!=0);
if(i8) { gl.ys.push(same ? data[offset] : -data[offset]); offset++; }
else
{
if(same) gl.ys.push(0);
else { gl.ys.push(bin.readShort(data, offset)); offset+=2; }
}
}
var x = 0, y = 0;
for(var i=0; i<crdnum; i++) { x += gl.xs[i]; y += gl.ys[i]; gl.xs[i]=x; gl.ys[i]=y; }
//console.log(endPtsOfContours, instructionLength, instructions, flags, xCoordinates, yCoordinates);
}
else
{
var ARG_1_AND_2_ARE_WORDS = 1<<0;
var ARGS_ARE_XY_VALUES = 1<<1;
var ROUND_XY_TO_GRID = 1<<2;
var WE_HAVE_A_SCALE = 1<<3;
var RESERVED = 1<<4;
var MORE_COMPONENTS = 1<<5;
var WE_HAVE_AN_X_AND_Y_SCALE= 1<<6;
var WE_HAVE_A_TWO_BY_TWO = 1<<7;
var WE_HAVE_INSTRUCTIONS = 1<<8;
var USE_MY_METRICS = 1<<9;
var OVERLAP_COMPOUND = 1<<10;
var SCALED_COMPONENT_OFFSET = 1<<11;
var UNSCALED_COMPONENT_OFFSET = 1<<12;
gl.parts = [];
var flags;
do {
flags = bin.readUshort(data, offset); offset += 2;
var part = { m:{a:1,b:0,c:0,d:1,tx:0,ty:0}, p1:-1, p2:-1 }; gl.parts.push(part);
part.glyphIndex = bin.readUshort(data, offset); offset += 2;
if ( flags & ARG_1_AND_2_ARE_WORDS) {
var arg1 = bin.readShort(data, offset); offset += 2;
var arg2 = bin.readShort(data, offset); offset += 2;
} else {
var arg1 = bin.readInt8(data, offset); offset ++;
var arg2 = bin.readInt8(data, offset); offset ++;
}
if(flags & ARGS_ARE_XY_VALUES) { part.m.tx = arg1; part.m.ty = arg2; }
else { part.p1=arg1; part.p2=arg2; }
//part.m.tx = arg1; part.m.ty = arg2;
//else { throw "params are not XY values"; }
if ( flags & WE_HAVE_A_SCALE ) {
part.m.a = part.m.d = bin.readF2dot14(data, offset); offset += 2;
} else if ( flags & WE_HAVE_AN_X_AND_Y_SCALE ) {
part.m.a = bin.readF2dot14(data, offset); offset += 2;
part.m.d = bin.readF2dot14(data, offset); offset += 2;
} else if ( flags & WE_HAVE_A_TWO_BY_TWO ) {
part.m.a = bin.readF2dot14(data, offset); offset += 2;
part.m.b = bin.readF2dot14(data, offset); offset += 2;
part.m.c = bin.readF2dot14(data, offset); offset += 2;
part.m.d = bin.readF2dot14(data, offset); offset += 2;
}
} while ( flags & MORE_COMPONENTS )
if (flags & WE_HAVE_INSTRUCTIONS){
var numInstr = bin.readUshort(data, offset); offset += 2;
gl.instr = [];
for(var i=0; i<numInstr; i++) { gl.instr.push(data[offset]); offset++; }
}
}
return gl;
}
};
Typr["T"].head = {
parseTab : function(data, offset, length)
{
var bin = Typr["B"];
var obj = {};
var tableVersion = bin.readFixed(data, offset); offset += 4;
obj["fontRevision"] = bin.readFixed(data, offset); offset += 4;
var checkSumAdjustment = bin.readUint(data, offset); offset += 4;
var magicNumber = bin.readUint(data, offset); offset += 4;
obj["flags"] = bin.readUshort(data, offset); offset += 2;
obj["unitsPerEm"] = bin.readUshort(data, offset); offset += 2;
obj["created"] = bin.readUint64(data, offset); offset += 8;
obj["modified"] = bin.readUint64(data, offset); offset += 8;
obj["xMin"] = bin.readShort(data, offset); offset += 2;
obj["yMin"] = bin.readShort(data, offset); offset += 2;
obj["xMax"] = bin.readShort(data, offset); offset += 2;
obj["yMax"] = bin.readShort(data, offset); offset += 2;
obj["macStyle"] = bin.readUshort(data, offset); offset += 2;
obj["lowestRecPPEM"] = bin.readUshort(data, offset); offset += 2;
obj["fontDirectionHint"] = bin.readShort(data, offset); offset += 2;
obj["indexToLocFormat"] = bin.readShort(data, offset); offset += 2;
obj["glyphDataFormat"] = bin.readShort(data, offset); offset += 2;
return obj;
}
};
Typr["T"].hhea = {
parseTab : function(data, offset, length)
{
var bin = Typr["B"];
var obj = {};
var tableVersion = bin.readFixed(data, offset); offset += 4;
var keys = ["ascender","descender","lineGap",
"advanceWidthMax","minLeftSideBearing","minRightSideBearing","xMaxExtent",
"caretSlopeRise","caretSlopeRun","caretOffset",
"res0","res1","res2","res3",
"metricDataFormat","numberOfHMetrics" ];
for(var i=0; i< keys.length; i++) {
var key = keys[i];
var func = (key=="advanceWidthMax" || key=="numberOfHMetrics")?bin.readUshort:bin.readShort;
obj[key]=func(data,offset+i*2);
}
return obj;
}
};
Typr["T"].hmtx = {
parseTab : function(data, offset, length, font)
{
var bin = Typr["B"];
var aWidth = [];
var lsBearing = [];
var nG = font["maxp"]["numGlyphs"], nH = font["hhea"]["numberOfHMetrics"];
var aw = 0, lsb = 0, i=0;
while(i<nH) { aw=bin.readUshort(data, offset+(i<<2)); lsb=bin.readShort(data, offset+(i<<2)+2); aWidth.push(aw); lsBearing.push(lsb); i++; }
while(i<nG) { aWidth.push(aw); lsBearing.push(lsb); i++; }
return {aWidth:aWidth, lsBearing:lsBearing};
}
};
Typr["T"].kern = {
parseTab : function(data, offset, length, font)
{
var bin = Typr["B"], kern=Typr["T"].kern;
var version = bin.readUshort(data, offset);
if(version==1) return kern.parseV1(data, offset, length, font);
var nTables = bin.readUshort(data, offset+2); offset+=4;
var map = {glyph1: [], rval:[]};
for(var i=0; i<nTables; i++)
{
offset+=2; // skip version
var length = bin.readUshort(data, offset); offset+=2;
var coverage = bin.readUshort(data, offset); offset+=2;
var format = coverage>>>8;
/* I have seen format 128 once, that's why I do */ format &= 0xf;
if(format==0) offset = kern.readFormat0(data, offset, map);
//else throw "unknown kern table format: "+format;
}
return map;
},
parseV1 : function(data, offset, length, font)
{
var bin = Typr["B"], kern=Typr["T"].kern;
var version = bin.readFixed(data, offset); // 0x00010000
var nTables = bin.readUint (data, offset+4); offset+=8;
var map = {glyph1: [], rval:[]};
for(var i=0; i<nTables; i++)
{
var length = bin.readUint(data, offset); offset+=4;
var coverage = bin.readUshort(data, offset); offset+=2;
var tupleIndex = bin.readUshort(data, offset); offset+=2;
var format = coverage&0xff;
if(format==0) offset = kern.readFormat0(data, offset, map);
//else throw "unknown kern table format: "+format;
}
return map;
},
readFormat0 : function(data, offset, map)
{
var bin = Typr["B"], rUs = bin.readUshort;
var pleft = -1;
var nPairs = rUs(data, offset);
var searchRange = rUs(data, offset+2);
var entrySelector = rUs(data, offset+4);
var rangeShift = rUs(data, offset+6); offset+=8;
for(var j=0; j<nPairs; j++)
{
var left = rUs(data, offset); offset+=2;
var right = rUs(data, offset); offset+=2;
var value = bin.readShort (data, offset); offset+=2;
if(left!=pleft) { map.glyph1.push(left); map.rval.push({ glyph2:[], vals:[] }) }
var rval = map.rval[map.rval.length-1];
rval.glyph2.push(right); rval.vals.push(value);
pleft = left;
}
return offset;
}
};
Typr["T"].loca = {
parseTab : function(data, offset, length, font)
{
var bin = Typr["B"];
var obj = [];
var ver = font["head"]["indexToLocFormat"];
var len = font["maxp"]["numGlyphs"]+1;
if(ver==0) for(var i=0; i<len; i++) obj.push(bin.readUshort(data, offset+(i<<1))<<1);
if(ver==1) for(var i=0; i<len; i++) obj.push(bin.readUint (data, offset+(i<<2)) );
return obj;
}
};
Typr["T"].maxp = {
parseTab : function(data, offset, length)
{
//console.log(data.length, offset, length);
var bin = Typr["B"], rU=bin.readUshort;
var obj = {};
// both versions 0.5 and 1.0
var ver = bin.readUint(data, offset); offset += 4;
obj["numGlyphs"] = rU(data, offset); offset += 2;
// only 1.0
/*
if(ver == 0x00010000) {
obj.maxPoints = rU(data, offset); offset += 2;
obj.maxContours = rU(data, offset); offset += 2;
obj.maxCompositePoints = rU(data, offset); offset += 2;
obj.maxCompositeContours = rU(data, offset); offset += 2;
obj.maxZones = rU(data, offset); offset += 2;
obj.maxTwilightPoints = rU(data, offset); offset += 2;
obj.maxStorage = rU(data, offset); offset += 2;
obj.maxFunctionDefs = rU(data, offset); offset += 2;
obj.maxInstructionDefs = rU(data, offset); offset += 2;
obj.maxStackElements = rU(data, offset); offset += 2;
obj.maxSizeOfInstructions = rU(data, offset); offset += 2;
obj.maxComponentElements = rU(data, offset); offset += 2;
obj.maxComponentDepth = rU(data, offset); offset += 2;
}
*/
return obj;
}
};
Typr["T"].name = {
parseTab : function(data, offset, length)
{
var bin = Typr["B"];
var obj = {};
var format = bin.readUshort(data, offset); offset += 2;
var count = bin.readUshort(data, offset); offset += 2;
var stringOffset = bin.readUshort(data, offset); offset += 2;
//console.log(format,count);
var names = [
"copyright",
"fontFamily",
"fontSubfamily",
"ID",
"fullName",
"version",
"postScriptName",
"trademark",
"manufacturer",
"designer",
"description",
"urlVendor",
"urlDesigner",
"licence",
"licenceURL",
"---",
"typoFamilyName",
"typoSubfamilyName",
"compatibleFull",
"sampleText",
"postScriptCID",
"wwsFamilyName",
"wwsSubfamilyName",
"lightPalette",
"darkPalette"
];
var offset0 = offset;
var rU = bin.readUshort;
for(var i=0; i<count; i++)
{
var platformID = rU(data, offset); offset += 2;
var encodingID = rU(data, offset); offset += 2;
var languageID = rU(data, offset); offset += 2;
var nameID = rU(data, offset); offset += 2;
var slen = rU(data, offset); offset += 2;
var noffset = rU(data, offset); offset += 2;
//console.log(platformID, encodingID, languageID.toString(16), nameID, length, noffset);
var soff = offset0 + count*12 + noffset;
var str;
if(false){}
else if(platformID == 0) str = bin.readUnicode(data, soff, slen/2);
else if(platformID == 3 && encodingID == 0) str = bin.readUnicode(data, soff, slen/2);
else if(encodingID == 0) str = bin.readASCII (data, soff, slen);
else if(encodingID == 1) str = bin.readUnicode(data, soff, slen/2);
else if(encodingID == 3) str = bin.readUnicode(data, soff, slen/2);
else if(encodingID == 4) str = bin.readUnicode(data, soff, slen/2);
else if(encodingID ==10) str = bin.readUnicode(data, soff, slen/2);
else if(platformID == 1) { str = bin.readASCII(data, soff, slen); console.log("reading unknown MAC encoding "+encodingID+" as ASCII") }
else {
console.log("unknown encoding "+encodingID + ", platformID: "+platformID);
str = bin.readASCII(data, soff, slen);
}
var tid = "p"+platformID+","+(languageID).toString(16);//Typr._platforms[platformID];
if(obj[tid]==null) obj[tid] = {};
obj[tid][names[nameID]] = str;
obj[tid]["_lang"] = languageID;
//console.log(tid, obj[tid]);
}
/*
if(format == 1)
{
var langTagCount = bin.readUshort(data, offset); offset += 2;
for(var i=0; i<langTagCount; i++)
{
var length = bin.readUshort(data, offset); offset += 2;
var noffset = bin.readUshort(data, offset); offset += 2;
}
}
*/
//console.log(obj);
var psn = "postScriptName";
for(var p in obj) if(obj[p][psn]!=null && obj[p]["_lang"]==0x0409) return obj[p]; // United States
for(var p in obj) if(obj[p][psn]!=null && obj[p]["_lang"]==0x0000) return obj[p]; // Universal
for(var p in obj) if(obj[p][psn]!=null && obj[p]["_lang"]==0x0c0c) return obj[p]; // Canada
for(var p in obj) if(obj[p][psn]!=null) return obj[p];
var out;
for(var p in obj) { out=obj[p]; break; }
console.log("returning name table with languageID "+ out._lang);
if(out[psn]==null && out["ID"]!=null) out[psn]=out["ID"];
return out;
}
}
Typr["T"].OS2 = {
parseTab : function(data, offset, length)
{
var bin = Typr["B"];
var ver = bin.readUshort(data, offset); offset += 2;
var OS2 = Typr["T"].OS2;
var obj = {};
if (ver==0) OS2.version0(data, offset, obj);
else if(ver==1) OS2.version1(data, offset, obj);
else if(ver==2 || ver==3 || ver==4) OS2.version2(data, offset, obj);
else if(ver==5) OS2.version5(data, offset, obj);
else throw "unknown OS/2 table version: "+ver;
return obj;
},
version0 : function(data, offset, obj)
{
var bin = Typr["B"];
obj["xAvgCharWidth"] = bin.readShort(data, offset); offset += 2;
obj["usWeightClass"] = bin.readUshort(data, offset); offset += 2;
obj["usWidthClass"] = bin.readUshort(data, offset); offset += 2;
obj["fsType"] = bin.readUshort(data, offset); offset += 2;
obj["ySubscriptXSize"] = bin.readShort(data, offset); offset += 2;
obj["ySubscriptYSize"] = bin.readShort(data, offset); offset += 2;
obj["ySubscriptXOffset"] = bin.readShort(data, offset); offset += 2;
obj["ySubscriptYOffset"] = bin.readShort(data, offset); offset += 2;
obj["ySuperscriptXSize"] = bin.readShort(data, offset); offset += 2;
obj["ySuperscriptYSize"] = bin.readShort(data, offset); offset += 2;
obj["ySuperscriptXOffset"] = bin.readShort(data, offset); offset += 2;
obj["ySuperscriptYOffset"] = bin.readShort(data, offset); offset += 2;
obj["yStrikeoutSize"] = bin.readShort(data, offset); offset += 2;
obj["yStrikeoutPosition"] = bin.readShort(data, offset); offset += 2;
obj["sFamilyClass"] = bin.readShort(data, offset); offset += 2;
obj["panose"] = bin.readBytes(data, offset, 10); offset += 10;
obj["ulUnicodeRange1"] = bin.readUint(data, offset); offset += 4;
obj["ulUnicodeRange2"] = bin.readUint(data, offset); offset += 4;
obj["ulUnicodeRange3"] = bin.readUint(data, offset); offset += 4;
obj["ulUnicodeRange4"] = bin.readUint(data, offset); offset += 4;
obj["achVendID"] = bin.readASCII(data, offset, 4); offset += 4;
obj["fsSelection"] = bin.readUshort(data, offset); offset += 2;
obj["usFirstCharIndex"] = bin.readUshort(data, offset); offset += 2;
obj["usLastCharIndex"] = bin.readUshort(data, offset); offset += 2;
obj["sTypoAscender"] = bin.readShort(data, offset); offset += 2;
obj["sTypoDescender"] = bin.readShort(data, offset); offset += 2;
obj["sTypoLineGap"] = bin.readShort(data, offset); offset += 2;
obj["usWinAscent"] = bin.readUshort(data, offset); offset += 2;
obj["usWinDescent"] = bin.readUshort(data, offset); offset += 2;
return offset;
},
version1 : function(data, offset, obj)
{
var bin = Typr["B"];
offset = Typr["T"].OS2.version0(data, offset, obj);
obj["ulCodePageRange1"] = bin.readUint(data, offset); offset += 4;
obj["ulCodePageRange2"] = bin.readUint(data, offset); offset += 4;
return offset;
},
version2 : function(data, offset, obj)
{
var bin = Typr["B"], rU=bin.readUshort;
offset = Typr["T"].OS2.version1(data, offset, obj);
obj["sxHeight"] = bin.readShort(data, offset); offset += 2;
obj["sCapHeight"] = bin.readShort(data, offset); offset += 2;
obj["usDefault"] = rU(data, offset); offset += 2;
obj["usBreak"] = rU(data, offset); offset += 2;
obj["usMaxContext"] = rU(data, offset); offset += 2;
return offset;
},
version5 : function(data, offset, obj)
{
var rU = Typr["B"].readUshort;
offset = Typr["T"].OS2.version2(data, offset, obj);
obj["usLowerOpticalPointSize"] = rU(data, offset); offset += 2;
obj["usUpperOpticalPointSize"] = rU(data, offset); offset += 2;
return offset;
}
}
Typr["T"].post = {
parseTab : function(data, offset, length)
{
var bin = Typr["B"];
var obj = {};
obj["version"] = bin.readFixed(data, offset); offset+=4;
obj["italicAngle"] = bin.readFixed(data, offset); offset+=4;
obj["underlinePosition"] = bin.readShort(data, offset); offset+=2;
obj["underlineThickness"] = bin.readShort(data, offset); offset+=2;
return obj;
}
};
Typr["T"].SVG = {
parseTab : function(data, offset, length)
{
var bin = Typr["B"];
var obj = { entries: []};
var offset0 = offset;
var tableVersion = bin.readUshort(data, offset); offset += 2;
var svgDocIndexOffset = bin.readUint(data, offset); offset += 4;
var reserved = bin.readUint(data, offset); offset += 4;
offset = svgDocIndexOffset + offset0;
var numEntries = bin.readUshort(data, offset); offset += 2;
for(var i=0; i<numEntries; i++)
{
var startGlyphID = bin.readUshort(data, offset); offset += 2;
var endGlyphID = bin.readUshort(data, offset); offset += 2;
var svgDocOffset = bin.readUint (data, offset); offset += 4;
var svgDocLength = bin.readUint (data, offset); offset += 4;
var sbuf = new Uint8Array(data.buffer, offset0 + svgDocOffset + svgDocIndexOffset, svgDocLength);
var svg = bin.readUTF8(sbuf, 0, sbuf.length);
for(var f=startGlyphID; f<=endGlyphID; f++) {
obj.entries[f] = svg;
}
}
return obj;
}
};