433 lines
12 KiB
JavaScript
433 lines
12 KiB
JavaScript
import crypto from "crypto";
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export const Dotless = {
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tag: "dtls",
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get(glyph) {
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if (glyph && glyph.related) return glyph.related.dotless;
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else return null;
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},
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set(glyph, toGid) {
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if (typeof toGid !== "string") throw new Error("Must supply a GID instead of a glyph");
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if (!glyph.related) glyph.related = {};
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glyph.related.dotless = toGid;
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},
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amendName(name) {
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return name + ".dotless";
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}
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};
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export const LowerYDotAtBelow = LinkedGlyphProp("LowerYDotAtBelow");
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export const DependentSelector = LinkedGlyphProp("DependentSelector");
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export const MathSansSerif = LinkedGlyphProp("MathSansSerif");
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export const VS01 = LinkedGlyphProp("VS01");
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function LinkedGlyphProp(key) {
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return {
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get(glyph) {
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if (glyph && glyph.related) return glyph.related[key];
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else return null;
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},
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set(glyph, toGid) {
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if (typeof toGid !== "string") throw new Error("Must supply a GID instead of a glyph");
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if (!glyph.related) glyph.related = {};
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glyph.related[key] = toGid;
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}
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};
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}
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export const Nwid = OtlTaggedProp("Nwid", "NWID");
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export const Wwid = OtlTaggedProp("Wwid", "WWID");
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export const Lnum = OtlTaggedProp("Lnum", "lnum");
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export const Onum = OtlTaggedProp("Onum", "onum");
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export const AplForm = OtlTaggedProp("AplForm", "APLF");
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export const NumeratorForm = OtlTaggedProp("Numerator", "numr");
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export const DenominatorForm = OtlTaggedProp("Denominator", "dnom");
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function OtlTaggedProp(key, otlTag) {
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return { ...LinkedGlyphProp(key), otlTag };
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}
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export const CvDecompose = DecompositionProp("CvDecompose");
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export const PseudoCvDecompose = DecompositionProp("PseudoCvDecompose");
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function DecompositionProp(key) {
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return {
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get(glyph) {
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if (glyph && glyph.related) return glyph.related[key];
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else return null;
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},
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set(glyph, composition) {
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if (!Array.isArray(composition)) throw new Error("Must supply a GID array");
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if (!glyph.related) glyph.related = {};
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glyph.related[key] = composition;
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}
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};
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}
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export const TieMark = {
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tag: "TMRK",
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get(glyph) {
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if (glyph && glyph.related) return glyph.related.TieMark;
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else return null;
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},
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set(glyph, toGid) {
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if (typeof toGid !== "string") throw new Error("Must supply a GID instead of a glyph");
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if (!glyph.related) glyph.related = {};
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glyph.related.TieMark = toGid;
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},
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amendName(name) {
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return `TieMark{${name}}`;
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},
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amendOtName(name) {
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return name + ".tieMark";
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}
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};
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export const TieGlyph = {
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get(glyph) {
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if (glyph && glyph.related) return glyph.related.TieGlyph;
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else return null;
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},
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set(glyph) {
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if (!glyph.related) glyph.related = {};
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glyph.related.TieGlyph = true;
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Joining.or(glyph, Joining.Classes.Mid);
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}
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};
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function BoolProp(id) {
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return {
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get(glyph) {
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if (glyph && glyph.related) return !!glyph.related[id];
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else return false;
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},
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set(glyph) {
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if (!glyph.related) glyph.related = {};
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glyph.related[id] = true;
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}
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};
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}
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export const Radical = BoolProp("Radical");
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export const NeqLigationSlashDotted = BoolProp("NeqLigationSlashDotted");
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export const OgonekTrY = BoolProp("OgonekTrY");
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export const IsSuperscript = BoolProp("IsSuperscript");
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export const IsSubscript = BoolProp("IsSubscript");
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export const Joining = {
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get(glyph) {
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if (glyph && glyph.related) return glyph.related.joining || 0;
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else return 0;
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},
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set(glyph, cls) {
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if (!glyph.related) glyph.related = {};
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glyph.related.joining = cls;
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},
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or(glyph, cls) {
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Joining.set(glyph, cls | Joining.get(cls));
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},
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amendOtName(baseName, cl) {
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switch (cl) {
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case Joining.Classes.Left:
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return `${baseName}.join-l`;
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case Joining.Classes.Right:
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return `${baseName}.join-r`;
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case Joining.Classes.Mid:
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return `${baseName}.join-m`;
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default:
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return baseName;
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}
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},
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Classes: {
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Left: 1,
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Right: 2,
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Mid: 3
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}
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};
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///////////////////////////////////////////////////////////////////////////////////////////////////
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const CvTagCache = new Map();
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export function Cv(tag, rank) {
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const key = tag + "#" + rank;
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if (CvTagCache.has(key)) return CvTagCache.get(key);
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const rel = {
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tag,
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rank,
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get(glyph) {
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if (glyph && glyph.related && glyph.related.cv) return glyph.related.cv[key];
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else return null;
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},
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set(glyph, toGid) {
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if (typeof toGid !== "string") throw new Error("Must supply a GID instead of a glyph");
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if (!glyph.related) glyph.related = {};
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if (!glyph.related.cv) glyph.related.cv = {};
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glyph.related.cv[key] = toGid;
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},
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getPreventDeriving(glyph) {
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return (
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glyph.related &&
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glyph.related.preventCvDeriving &&
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!!glyph.related.preventCvDeriving[key]
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);
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},
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setPreventDeriving(glyph) {
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if (!glyph.related) glyph.related = {};
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if (!glyph.related.preventCvDeriving) glyph.related.preventCvDeriving = {};
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glyph.related.preventCvDeriving[key] = true;
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},
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amendName(name) {
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return name + "." + key;
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},
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amendOtName(name) {
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return name + "." + tag + "-" + rank;
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}
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};
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CvTagCache.set(key, rel);
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return rel;
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}
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export const DotlessOrNot = {
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query(glyph) {
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if (Dotless.get(glyph)) return [Dotless];
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return null;
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}
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};
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export const AnyCv = {
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query(glyph) {
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let ret = [];
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if (glyph && glyph.related && glyph.related.cv) {
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for (const key in glyph.related.cv) {
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const [tag, rankStr] = key.split("#");
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const rank = parseInt(rankStr, 10);
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const rel = Cv(tag, rank);
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if (rel.get(glyph)) ret.push(rel);
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}
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}
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return ret;
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}
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};
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export const AnyDerivingCv = {
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query(glyph) {
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let ret = [];
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if (glyph && glyph.related && glyph.related.cv) {
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for (const key in glyph.related.cv) {
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if (glyph.related.preventCvDeriving && glyph.related.preventCvDeriving[key])
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continue;
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const [tag, rankStr] = key.split("#");
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const rank = parseInt(rankStr, 10);
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const rel = Cv(tag, rank);
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if (rel.get(glyph)) ret.push(rel);
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}
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}
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return ret;
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},
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hasNonDerivingVariants(glyph) {
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if (glyph && glyph.related && glyph.related.cv) {
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for (const key in glyph.related.cv) {
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if (glyph.related.preventCvDeriving && glyph.related.preventCvDeriving[key])
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return true;
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}
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}
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return false;
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}
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};
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///////////////////////////////////////////////////////////////////////////////////////////////////
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export function getGrTree(gid, grSetList, fnGidToGlyph) {
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if (typeof gid !== "string") throw new TypeError("Must supply a GID");
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let sink = [];
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getGrTreeImpl(gid, grSetList, fnGidToGlyph, sink);
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return sink;
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}
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function getGrTreeImpl(gid, grSetList, fnGidToGlyph, sink) {
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if (!grSetList.length) return;
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const g = fnGidToGlyph(gid);
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if (!g) return;
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const grs = grSetList[0].query(g);
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getGrTreeImpl(gid, grSetList.slice(1), fnGidToGlyph, sink);
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if (grs && grs.length) {
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for (const gr of grs) {
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sink.push([gr, gid, gr.get(g)]);
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getGrTreeImpl(gr.get(g), grSetList, fnGidToGlyph, sink);
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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export function getGrMesh(gidList, grq, fnGidToGlyph) {
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if (typeof gidList === "string" || !Array.isArray(gidList))
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throw new TypeError(`glyphs must be a glyph array!`);
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const allGrSet = new Set();
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for (const g of gidList) {
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for (const gr of grq.query(fnGidToGlyph(g))) allGrSet.add(gr);
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}
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const allGrList = Array.from(allGrSet);
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let ret = [];
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for (const gr of allGrList) {
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const col = [];
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collectGidLists(gidList, gidList, allGrList, gr, fnGidToGlyph, col);
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if (!col.length) continue;
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for (const from of col) {
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const to = gidListMap(from, gr, fnGidToGlyph);
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if (to && !gidListSame(from, to)) {
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ret.push([gr, from, to]);
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}
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}
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}
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return ret;
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}
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function gidListSame(a, b) {
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for (let j = 0; j < a.length; j++) {
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if (a[j] !== b[j]) return false;
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}
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return true;
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}
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function gidListMap(gidList, gr, fnGidToGlyph) {
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let effective = false;
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const gidList1 = gidList.slice(0);
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for (let j = 0; j < gidList1.length; j++) {
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const g = fnGidToGlyph(gidList[j]);
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if (g && gr.get(g)) {
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gidList1[j] = gr.get(g);
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effective = true;
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}
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}
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if (effective) return gidList1;
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else return null;
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}
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function collectGidLists(gidListOrig, gidList, grl, excluded, fnGidToGlyph, sink) {
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if (!grl.length) {
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sink.push(gidList);
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return;
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} else {
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const gr = grl[0],
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grlRest = grl.slice(1);
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collectGidLists(gidListOrig, gidList, grlRest, excluded, fnGidToGlyph, sink);
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if (gr !== excluded) {
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const gidList1 = gidListMap(gidList, gr, fnGidToGlyph);
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if (gidList1 && !gidListSame(gidList, gidList1))
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collectGidLists(gidListOrig, gidList1, grlRest, excluded, fnGidToGlyph, sink);
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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export function createGrDisplaySheet(glyphStore, gid) {
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const glyph = glyphStore.queryByName(gid);
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if (!glyph) return [];
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// Query selected typographic features -- mostly NWID and WWID
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let typographicFeatures = [];
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displayQueryPairFeatures(glyphStore, gid, Nwid, Wwid, typographicFeatures);
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displayQueryPairFeatures(glyphStore, gid, Lnum, Onum, typographicFeatures);
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displayQuerySingleFeature(glyphStore, gid, AplForm, typographicFeatures);
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let charVariantFeatures = [];
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const decomposition = CvDecompose.get(glyph) || PseudoCvDecompose.get(glyph);
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if (decomposition) {
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const variantAssignmentSet = new Set();
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for (const componentGn of decomposition) {
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const component = glyphStore.queryByName(componentGn);
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if (!component) continue;
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queryCvFeatureTagsOf(charVariantFeatures, componentGn, component, variantAssignmentSet);
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}
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} else {
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queryCvFeatureTagsOf(charVariantFeatures, gid, glyph, null);
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}
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return [typographicFeatures, charVariantFeatures];
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}
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function displayQueryPairFeatures(gs, gid, grCis, grTrans, sink) {
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const g = gs.queryByName(gid);
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if (!g) return;
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const glyphIsHidden = /^\./.test(gid);
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if (glyphIsHidden) return;
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if (grCis.get(g) || grTrans.get(g)) {
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sink.push(`'${grCis.otlTag}' 1`, `'${grTrans.otlTag}' 1`);
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}
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}
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function displayQuerySingleFeature(gs, gid, grCis, sink) {
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const g = gs.queryByName(gid);
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if (!g) return;
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const glyphIsHidden = /^\./.test(gid);
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if (glyphIsHidden) return;
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if (grCis.get(g)) {
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sink.push(`'${grCis.otlTag}' 0`, `'${grCis.otlTag}' 1`);
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}
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}
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function byTagPreference(a, b) {
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const ua = a.tag.toUpperCase(),
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ub = b.tag.toUpperCase();
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if (ua < ub) return -1;
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if (ua > ub) return 1;
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return 0;
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}
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function queryCvFeatureTagsOf(sink, gid, glyph, variantAssignmentSet) {
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const cvs = AnyCv.query(glyph).sort(byTagPreference);
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let existingGlyphs = new Set();
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let m = new Map();
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for (const gr of cvs) {
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const tag = gr.tag;
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const target = gr.get(glyph);
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if (target === gid) continue;
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if (existingGlyphs.has(target)) continue;
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existingGlyphs.add(target);
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let g = m.get(tag);
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if (!g) {
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g = [];
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m.set(tag, g);
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}
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const assignCss = `'${tag}' ${gr.rank}`;
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if (!variantAssignmentSet) {
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g.push(assignCss);
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} else if (!variantAssignmentSet.has(assignCss)) {
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g.push(assignCss);
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variantAssignmentSet.add(assignCss);
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}
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}
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for (const g of m.values()) if (g.length) sink.push(g);
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}
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export function linkSuffixGr(gs, suffix, gr) {
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const reSuffix = new RegExp("\\." + suffix + "$");
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for (const [gnSuffixed, gSuffixed] of gs.namedEntries()) {
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if (reSuffix.test(gnSuffixed) && !/^\./.test(gnSuffixed)) {
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const gnOriginal = gnSuffixed.replace(reSuffix, "");
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const gOriginal = gs.queryByName(gnOriginal);
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if (!gOriginal) continue;
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gr.set(gOriginal, gnSuffixed);
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}
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}
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}
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export function linkSuffixPairGr(gs, tagCis, tagTrans, grCis, grTrans) {
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const reTagCis = new RegExp("\\." + tagCis + "$");
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for (const [gnCis, gCis] of gs.namedEntries()) {
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if (reTagCis.test(gnCis) && !/^\./.test(gnCis)) {
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const gnTrans = gnCis.replace(reTagCis, "." + tagTrans);
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const gTrans = gs.queryByName(gnTrans);
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if (!gTrans) continue;
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grTrans.set(gCis, gnTrans);
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grCis.set(gTrans, gnCis);
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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export function hashCv(g) {
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const hasher = crypto.createHash("sha256");
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for (const gr of AnyCv.query(g)) {
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hasher.update(`${gr.tag}/${gr.rank}:${gr.get(g)}\n`);
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}
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return hasher.digest("hex");
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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export const SvInheritableRelations = [
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DependentSelector,
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Joining,
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NeqLigationSlashDotted,
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OgonekTrY
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];
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