57 lines
1.6 KiB
JavaScript
57 lines
1.6 KiB
JavaScript
const blockData = require("./block-data");
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const ucdNames = require("unicode-13.0.0/Names");
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const ugc = require("unicode-13.0.0/General_Category");
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module.exports = function (covUpright, covItalic, covOblique) {
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const result = [];
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for (const [[lchBlockStart, lchBlockEnd], block] of blockData) {
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let blockResults = [];
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let processed = new Set();
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for (const [lchFont] of covUpright) {
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if (lchFont < 0x20 || lchFont < lchBlockStart || lchFont > lchBlockEnd) continue;
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const lchStart = (lchFont >>> 4) << 4;
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const lchEnd = lchStart + 0x10;
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for (let lch = lchStart; lch < lchEnd; lch++) {
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if (processed.has(lch)) continue;
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const chName = ucdNames.get(lch);
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const gc = ugc.get(lch);
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const cdUpright = covUpright.get(lch);
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const cdItalic = covItalic.get(lch);
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const cdOblique = covOblique.get(lch);
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if (cdUpright && cdItalic && cdOblique) {
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const [glyphName, typographicVariants, charVariantsUpright] = cdUpright;
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const [, , charVariantsItalic] = cdItalic;
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const [, , charVariantsOblique] = cdOblique;
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blockResults.push({
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lch,
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gc,
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charName: chName,
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inFont: true,
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glyphName: glyphName,
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typographicVariants: typographicVariants,
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charVariantsUpright,
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charVariantsItalic,
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charVariantsOblique
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});
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} else {
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blockResults.push({
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lch,
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gc,
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charName: chName,
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inFont: false,
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glyphName: undefined
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});
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}
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processed.add(lch);
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}
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}
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if (blockResults.length) {
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result.push({
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name: block,
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characters: blockResults.sort((a, b) => a.lch - b.lch)
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});
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}
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}
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return result;
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};
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