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Extract GPOS and GSUB tables

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This commit is contained in:
kiliman
2017-09-18 17:32:15 -04:00
parent 7b437bf50e
commit 8964c6571a
1 changed files with 8 additions and 40 deletions
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extract.js
+8 -40
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@@ -23,6 +23,8 @@ async function main() {
await extractAndWrite('charstrings', extractCharStrings, dom);
await extractAndWrite('config', extractConfig, dom);
await extractAndWrite('gpos', extractGpos, dom);
await extractAndWrite('gsub', extractGsub, dom);
await extractAndWrite('hmtx', extractHmtx, dom);
await extractAndWrite('subrs', extractSubrs, dom);
await extractAndWrite('gsubrs', extractGlobalSubrs, dom);
@@ -90,33 +92,14 @@ const extractFromPath = (path, dom) => {
return newDom.documentElement;
};
const extractCmap = dom => {
const newDom = new DOMParser().parseFromString('<cmap/>');
const cmap = xpath.select('/ttFont/cmap/cmap_format_4', dom);
cmap.forEach(node => {
// for each cmap_format_4 node, need to copy map elements
// create and append cmap_format_4 node
const cmap4 = node.cloneNode(false);
newDom.documentElement.appendChild(cmap4);
xpath
.select('map', node)
.filter(child => regEx.test(child.getAttribute('name')))
.forEach(child => cmap4.appendChild(child));
});
return newDom;
const extractGpos = dom => {
const gpos = xpath.select('/ttFont/GPOS', dom, true);
return gpos;
};
const extractClassDef = dom => {
const newDom = new DOMParser().parseFromString('<GlyphClassDef/>');
const classDefs = xpath.select('/ttFont/GDEF/GlyphClassDef/ClassDef', dom);
classDefs
.filter(node => regEx.test(node.getAttribute('glyph')))
.forEach(node => newDom.documentElement.appendChild(node));
return newDom;
const extractGsub = dom => {
const gsub = xpath.select('/ttFont/GSUB', dom, true);
return gsub;
};
const extractHmtx = dom => {
@@ -130,19 +113,6 @@ const extractHmtx = dom => {
return newDom;
};
const extractLookup = dom => {
const newDom = new DOMParser().parseFromString('<LookupList/>');
const lookup = xpath.select(
'/ttFont/GSUB/LookupList/Lookup[@index="20"]',
dom,
true
);
newDom.documentElement.appendChild(lookup);
return newDom;
};
const extractCharStrings = dom => {
const newDom = new DOMParser().parseFromString('<CharStrings/>');
const charStrings = xpath.select(
@@ -159,13 +129,11 @@ const extractCharStrings = dom => {
const extractSubrs = dom => {
const subrs = xpath.select('/ttFont/CFF/CFFFont/Private/Subrs', dom, true);
return subrs;
};
const extractGlobalSubrs = dom => {
const subrs = xpath.select('/ttFont/CFF/GlobalSubrs', dom, true);
return subrs;
};