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node_modules/fontkit/src/tables/name.js
| 130 lines
| 3.2 KiB
| application/javascript
| JavascriptLexer
|
| r789 | import r from 'restructure'; | |||
| import {getEncoding, LANGUAGES} from '../encodings'; | ||||
| let NameRecord = new r.Struct({ | ||||
| platformID: r.uint16, | ||||
| encodingID: r.uint16, | ||||
| languageID: r.uint16, | ||||
| nameID: r.uint16, | ||||
| length: r.uint16, | ||||
| string: new r.Pointer(r.uint16, | ||||
| new r.String('length', t => getEncoding(t.platformID, t.encodingID, t.languageID)), | ||||
| { type: 'parent', relativeTo: 'parent.stringOffset', allowNull: false } | ||||
| ) | ||||
| }); | ||||
| let LangTagRecord = new r.Struct({ | ||||
| length: r.uint16, | ||||
| tag: new r.Pointer(r.uint16, new r.String('length', 'utf16be'), {type: 'parent', relativeTo: 'stringOffset'}) | ||||
| }); | ||||
| var NameTable = new r.VersionedStruct(r.uint16, { | ||||
| 0: { | ||||
| count: r.uint16, | ||||
| stringOffset: r.uint16, | ||||
| records: new r.Array(NameRecord, 'count') | ||||
| }, | ||||
| 1: { | ||||
| count: r.uint16, | ||||
| stringOffset: r.uint16, | ||||
| records: new r.Array(NameRecord, 'count'), | ||||
| langTagCount: r.uint16, | ||||
| langTags: new r.Array(LangTagRecord, 'langTagCount') | ||||
| } | ||||
| }); | ||||
| export default NameTable; | ||||
| const NAMES = [ | ||||
| 'copyright', | ||||
| 'fontFamily', | ||||
| 'fontSubfamily', | ||||
| 'uniqueSubfamily', | ||||
| 'fullName', | ||||
| 'version', | ||||
| 'postscriptName', // Note: A font may have only one PostScript name and that name must be ASCII. | ||||
| 'trademark', | ||||
| 'manufacturer', | ||||
| 'designer', | ||||
| 'description', | ||||
| 'vendorURL', | ||||
| 'designerURL', | ||||
| 'license', | ||||
| 'licenseURL', | ||||
| null, // reserved | ||||
| 'preferredFamily', | ||||
| 'preferredSubfamily', | ||||
| 'compatibleFull', | ||||
| 'sampleText', | ||||
| 'postscriptCIDFontName', | ||||
| 'wwsFamilyName', | ||||
| 'wwsSubfamilyName' | ||||
| ]; | ||||
| NameTable.process = function(stream) { | ||||
| var records = {}; | ||||
| for (let record of this.records) { | ||||
| // find out what language this is for | ||||
| let language = LANGUAGES[record.platformID][record.languageID]; | ||||
| if (language == null && this.langTags != null && record.languageID >= 0x8000) { | ||||
| language = this.langTags[record.languageID - 0x8000].tag; | ||||
| } | ||||
| if (language == null) { | ||||
| language = record.platformID + '-' + record.languageID; | ||||
| } | ||||
| // if the nameID is >= 256, it is a font feature record (AAT) | ||||
| let key = record.nameID >= 256 ? 'fontFeatures' : (NAMES[record.nameID] || record.nameID); | ||||
| if (records[key] == null) { | ||||
| records[key] = {}; | ||||
| } | ||||
| let obj = records[key]; | ||||
| if (record.nameID >= 256) { | ||||
| obj = obj[record.nameID] || (obj[record.nameID] = {}); | ||||
| } | ||||
| if (typeof record.string === 'string' || typeof obj[language] !== 'string') { | ||||
| obj[language] = record.string; | ||||
| } | ||||
| } | ||||
| this.records = records; | ||||
| }; | ||||
| NameTable.preEncode = function() { | ||||
| if (Array.isArray(this.records)) return; | ||||
| this.version = 0; | ||||
| let records = []; | ||||
| for (let key in this.records) { | ||||
| let val = this.records[key]; | ||||
| if (key === 'fontFeatures') continue; | ||||
| records.push({ | ||||
| platformID: 3, | ||||
| encodingID: 1, | ||||
| languageID: 0x409, | ||||
| nameID: NAMES.indexOf(key), | ||||
| length: Buffer.byteLength(val.en, 'utf16le'), | ||||
| string: val.en | ||||
| }); | ||||
| if (key === 'postscriptName') { | ||||
| records.push({ | ||||
| platformID: 1, | ||||
| encodingID: 0, | ||||
| languageID: 0, | ||||
| nameID: NAMES.indexOf(key), | ||||
| length: val.en.length, | ||||
| string: val.en | ||||
| }); | ||||
| } | ||||
| } | ||||
| this.records = records; | ||||
| this.count = records.length; | ||||
| this.stringOffset = NameTable.size(this, null, false); | ||||
| }; | ||||