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Commit Description:
prevent multiple place login using uuid cookie
Commit Description:
prevent multiple place login using uuid cookie
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node_modules/fontkit/src/subset/CFFSubset.js
| 169 lines
| 4.2 KiB
| application/javascript
| JavascriptLexer
|
| r789 | import Subset from './Subset'; | |||
| import CFFTop from '../cff/CFFTop'; | ||||
| import CFFPrivateDict from '../cff/CFFPrivateDict'; | ||||
| import standardStrings from '../cff/CFFStandardStrings'; | ||||
| export default class CFFSubset extends Subset { | ||||
| constructor(font) { | ||||
| super(font); | ||||
| this.cff = this.font['CFF ']; | ||||
| if (!this.cff) { | ||||
| throw new Error('Not a CFF Font'); | ||||
| } | ||||
| } | ||||
| subsetCharstrings() { | ||||
| this.charstrings = []; | ||||
| let gsubrs = {}; | ||||
| for (let gid of this.glyphs) { | ||||
| this.charstrings.push(this.cff.getCharString(gid)); | ||||
| let glyph = this.font.getGlyph(gid); | ||||
| let path = glyph.path; // this causes the glyph to be parsed | ||||
| for (let subr in glyph._usedGsubrs) { | ||||
| gsubrs[subr] = true; | ||||
| } | ||||
| } | ||||
| this.gsubrs = this.subsetSubrs(this.cff.globalSubrIndex, gsubrs); | ||||
| } | ||||
| subsetSubrs(subrs, used) { | ||||
| let res = []; | ||||
| for (let i = 0; i < subrs.length; i++) { | ||||
| let subr = subrs[i]; | ||||
| if (used[i]) { | ||||
| this.cff.stream.pos = subr.offset; | ||||
| res.push(this.cff.stream.readBuffer(subr.length)); | ||||
| } else { | ||||
| res.push(new Buffer([11])); // return | ||||
| } | ||||
| } | ||||
| return res; | ||||
| } | ||||
| subsetFontdict(topDict) { | ||||
| topDict.FDArray = []; | ||||
| topDict.FDSelect = { | ||||
| version: 0, | ||||
| fds: [] | ||||
| }; | ||||
| let used_fds = {}; | ||||
| let used_subrs = []; | ||||
| for (let gid of this.glyphs) { | ||||
| let fd = this.cff.fdForGlyph(gid); | ||||
| if (fd == null) { | ||||
| continue; | ||||
| } | ||||
| if (!used_fds[fd]) { | ||||
| topDict.FDArray.push(Object.assign({}, this.cff.topDict.FDArray[fd])); | ||||
| used_subrs.push({}); | ||||
| } | ||||
| used_fds[fd] = true; | ||||
| topDict.FDSelect.fds.push(topDict.FDArray.length - 1); | ||||
| let glyph = this.font.getGlyph(gid); | ||||
| let path = glyph.path; // this causes the glyph to be parsed | ||||
| for (let subr in glyph._usedSubrs) { | ||||
| used_subrs[used_subrs.length - 1][subr] = true; | ||||
| } | ||||
| } | ||||
| for (let i = 0; i < topDict.FDArray.length; i++) { | ||||
| let dict = topDict.FDArray[i]; | ||||
| delete dict.FontName; | ||||
| if (dict.Private && dict.Private.Subrs) { | ||||
| dict.Private = Object.assign({}, dict.Private); | ||||
| dict.Private.Subrs = this.subsetSubrs(dict.Private.Subrs, used_subrs[i]); | ||||
| } | ||||
| } | ||||
| return; | ||||
| } | ||||
| createCIDFontdict(topDict) { | ||||
| let used_subrs = {}; | ||||
| for (let gid of this.glyphs) { | ||||
| let glyph = this.font.getGlyph(gid); | ||||
| let path = glyph.path; // this causes the glyph to be parsed | ||||
| for (let subr in glyph._usedSubrs) { | ||||
| used_subrs[subr] = true; | ||||
| } | ||||
| } | ||||
| let privateDict = Object.assign({}, this.cff.topDict.Private); | ||||
| if (this.cff.topDict.Private && this.cff.topDict.Private.Subrs) { | ||||
| privateDict.Subrs = this.subsetSubrs(this.cff.topDict.Private.Subrs, used_subrs); | ||||
| } | ||||
| topDict.FDArray = [{ Private: privateDict }]; | ||||
| return topDict.FDSelect = { | ||||
| version: 3, | ||||
| nRanges: 1, | ||||
| ranges: [{ first: 0, fd: 0 }], | ||||
| sentinel: this.charstrings.length | ||||
| }; | ||||
| } | ||||
| addString(string) { | ||||
| if (!string) { | ||||
| return null; | ||||
| } | ||||
| if (!this.strings) { | ||||
| this.strings = []; | ||||
| } | ||||
| this.strings.push(string); | ||||
| return standardStrings.length + this.strings.length - 1; | ||||
| } | ||||
| encode(stream) { | ||||
| this.subsetCharstrings(); | ||||
| let charset = { | ||||
| version: this.charstrings.length > 255 ? 2 : 1, | ||||
| ranges: [{ first: 1, nLeft: this.charstrings.length - 2 }] | ||||
| }; | ||||
| let topDict = Object.assign({}, this.cff.topDict); | ||||
| topDict.Private = null; | ||||
| topDict.charset = charset; | ||||
| topDict.Encoding = null; | ||||
| topDict.CharStrings = this.charstrings; | ||||
| for (let key of ['version', 'Notice', 'Copyright', 'FullName', 'FamilyName', 'Weight', 'PostScript', 'BaseFontName', 'FontName']) { | ||||
| topDict[key] = this.addString(this.cff.string(topDict[key])); | ||||
| } | ||||
| topDict.ROS = [this.addString('Adobe'), this.addString('Identity'), 0]; | ||||
| topDict.CIDCount = this.charstrings.length; | ||||
| if (this.cff.isCIDFont) { | ||||
| this.subsetFontdict(topDict); | ||||
| } else { | ||||
| this.createCIDFontdict(topDict); | ||||
| } | ||||
| let top = { | ||||
| version: 1, | ||||
| hdrSize: this.cff.hdrSize, | ||||
| offSize: 4, | ||||
| header: this.cff.header, | ||||
| nameIndex: [this.cff.postscriptName], | ||||
| topDictIndex: [topDict], | ||||
| stringIndex: this.strings, | ||||
| globalSubrIndex: this.gsubrs | ||||
| }; | ||||
| CFFTop.encode(stream, top); | ||||
| } | ||||
| } | ||||