More cleanup
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be5invis
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4a418cd473
commit
5d39aae19d
4 changed files with 109 additions and 99 deletions
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@ -1,5 +1,97 @@
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import { Ot } from "ot-builder";
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export function convertGsub(table, glyphs) {
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ConvertGsubGposImpl(GsubHandlers, Ot.Gsub.Table, table, glyphs);
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}
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export function convertGpos(table, glyphs) {
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ConvertGsubGposImpl(GposHandlers, Ot.Gpos.Table, table, glyphs);
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}
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export function convertGdef(otdGdef, glyphs) {
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const gdef = new Ot.Gdef.Table();
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gdef.glyphClassDef = new Map();
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for (const gn in otdGdef.glyphClassDef) {
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const g = glyphs.queryByName(gn);
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if (g) gdef.glyphClassDef.set(g, otdGdef.glyphClassDef[gn]);
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}
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return gdef;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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function ConvertGsubGposImpl(handlers, T, table, glyphs) {
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if (!table) return null;
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const ls = new LookupStore(handlers, glyphs);
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if (table.lookups) {
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if (table.lookupOrder) {
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for (const l of table.lookupOrder) ls.declare(l, table.lookups[l]);
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}
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for (const l in table.lookups) ls.declare(l, table.lookups[l]);
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for (const l in table.lookups) ls.fill(l, table.lookups[l]);
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}
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const fs = new FeatureStore(ls);
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if (table.features) {
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for (const f in table.features) fs.fill(f, table.features[f]);
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}
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const ss = new ScriptLanguageStore(fs);
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if (table.languages) {
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for (const sl in table.languages) ss.fill(sl, table.languages[sl]);
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}
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return new T(ss.extract(), fs.extract(), ls.extract());
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}
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class ScriptLanguageStore {
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constructor(features) {
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this.featureStore = features;
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this.m_scriptMapping = new Map();
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}
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extract() {
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return this.m_scriptMapping;
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}
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fill(id, data) {
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const scriptTag = id.slice(0, 4);
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const languageTag = id.slice(5, 9).padEnd(4);
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let sr = this.m_scriptMapping.get(scriptTag);
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if (!sr) {
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sr = { defaultLanguage: null, languages: new Map() };
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this.m_scriptMapping.set(scriptTag, sr);
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}
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const lr = this.createLanguageRecord(data);
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if (languageTag === "dflt" || languageTag === "DFLT") sr.defaultLanguage = lr;
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else sr.languages.set(languageTag, lr);
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}
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createLanguageRecord(data) {
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const features = [];
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for (const fid of data.features) {
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const feature = this.featureStore.query(fid);
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if (feature) features.push(feature);
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}
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return {
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requiredFeature: this.featureStore.query(data.requiredFeature) || null,
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features: features
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};
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}
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}
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class FeatureStore {
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constructor(lookups) {
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this.lookupStore = lookups;
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this.m_mapping = new Map();
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}
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extract() {
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return Array.from(this.m_mapping.values());
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}
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query(id) {
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return this.m_mapping.get(id);
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}
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fill(id, data) {
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const tag = id.slice(0, 4);
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const lookups = [];
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for (const lid of data) {
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const lookup = this.lookupStore.query(lid);
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if (lookup) lookups.push(lookup);
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}
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this.m_mapping.set(id, { tag, lookups });
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}
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}
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class LookupStore {
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constructor(handlers, glyphs) {
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this.glyphs = glyphs;
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@ -26,6 +118,9 @@ class LookupStore {
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handler.fill(dst, otdLookup, this);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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const GsubSingleHandler = {
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init() {
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return new Ot.Gsub.Single();
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@ -133,6 +228,7 @@ const GsubReverseHandler = {
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}
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}
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};
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function mapGlyphListAll(gl, store) {
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const out = [];
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for (const item of gl) {
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@ -160,6 +256,9 @@ const GsubHandlers = {
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gsub_chaining: GsubChainingHandler,
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gsub_reverse: GsubReverseHandler
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};
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///////////////////////////////////////////////////////////////////////////////////////////////////
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const GposMarkToBaseHandler = {
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init() {
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return new Ot.Gpos.MarkToBase();
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@ -222,90 +321,3 @@ const GposHandlers = {
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gpos_mark_to_base: GposMarkToBaseHandler,
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gpos_mark_to_mark: GposMarkToMarkHandler
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};
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class FeatureStore {
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constructor(lookups) {
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this.lookupStore = lookups;
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this.m_mapping = new Map();
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}
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extract() {
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return Array.from(this.m_mapping.values());
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}
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query(id) {
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return this.m_mapping.get(id);
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}
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fill(id, data) {
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const tag = id.slice(0, 4);
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const lookups = [];
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for (const lid of data) {
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const lookup = this.lookupStore.query(lid);
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if (lookup) lookups.push(lookup);
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}
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this.m_mapping.set(id, { tag, lookups });
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}
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}
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class ScriptLanguageStore {
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constructor(features) {
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this.featureStore = features;
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this.m_scriptMapping = new Map();
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}
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extract() {
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return this.m_scriptMapping;
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}
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fill(id, data) {
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const scriptTag = id.slice(0, 4);
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const languageTag = id.slice(5, 9).padEnd(4);
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let sr = this.m_scriptMapping.get(scriptTag);
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if (!sr) {
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sr = { defaultLanguage: null, languages: new Map() };
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this.m_scriptMapping.set(scriptTag, sr);
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}
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const lr = this.createLanguageRecord(data);
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if (languageTag === "dflt" || languageTag === "DFLT") sr.defaultLanguage = lr;
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else sr.languages.set(languageTag, lr);
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}
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createLanguageRecord(data) {
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const features = [];
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for (const fid of data.features) {
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const feature = this.featureStore.query(fid);
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if (feature) features.push(feature);
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}
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return {
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requiredFeature: this.featureStore.query(data.requiredFeature) || null,
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features: features
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};
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}
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}
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function ConvertGsubGposT(handlers, T) {
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return function (table, glyphs) {
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if (!table) return null;
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const ls = new LookupStore(handlers, glyphs);
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if (table.lookups) {
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if (table.lookupOrder) {
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for (const l of table.lookupOrder) ls.declare(l, table.lookups[l]);
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}
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for (const l in table.lookups) ls.declare(l, table.lookups[l]);
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for (const l in table.lookups) ls.fill(l, table.lookups[l]);
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}
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const fs = new FeatureStore(ls);
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if (table.features) {
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for (const f in table.features) fs.fill(f, table.features[f]);
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}
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const ss = new ScriptLanguageStore(fs);
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if (table.languages) {
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for (const sl in table.languages) ss.fill(sl, table.languages[sl]);
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}
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return new T(ss.extract(), fs.extract(), ls.extract());
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};
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}
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function convertGdef(otdGdef, glyphs) {
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const gdef = new Ot.Gdef.Table();
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gdef.glyphClassDef = new Map();
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for (const gn in otdGdef.glyphClassDef) {
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const g = glyphs.queryByName(gn);
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if (g) gdef.glyphClassDef.set(g, otdGdef.glyphClassDef[gn]);
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}
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return gdef;
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}
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export const convertGsub = ConvertGsubGposT(GsubHandlers, Ot.Gsub.Table);
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export const convertGpos = ConvertGsubGposT(GposHandlers, Ot.Gpos.Table);
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export { convertGdef };
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