Iosevka/gen/generator.js
2020-04-03 21:46:37 -07:00

115 lines
3.3 KiB
JavaScript

"use strict";
const fs = require("fs-extra");
const path = require("path");
const argv = require("yargs").argv;
const buildFont = require("./build-font.js");
const EmptyFont = require("./empty-font.js");
const parameters = require("../support/parameters");
const formVariantData = require("../support/variant-data");
const formLigationData = require("../support/ligation-data");
const regulateGlyphs = require("../support/regulate-glyph");
const toml = require("toml");
main().catch((e) => {
console.error(e);
process.exit(1);
});
///////////////////////////////////////////////////////////////////////////////////////////////////
async function main() {
const para = await getParameters(argv);
const font = buildFont(para);
if (argv.charmap) await saveCharMap(font);
if (argv.o) await saveOtd(font);
}
// Parameter preparation
async function getParameters(argv) {
const PARAMETERS_TOML = path.resolve(__dirname, "../parameters.toml");
const PRIVATE_TOML = path.resolve(__dirname, "../private.toml");
const VARIANTS_TOML = path.resolve(__dirname, "../variants.toml");
const LIGATIONS_TOML = path.resolve(__dirname, "../ligation-set.toml");
const parametersData = Object.assign(
{},
await tryParseToml(PARAMETERS_TOML),
(await fs.exists(PRIVATE_TOML)) ? await tryParseToml(PRIVATE_TOML) : []
);
const rawVariantsData = await tryParseToml(VARIANTS_TOML);
const rawLigationData = await tryParseToml(LIGATIONS_TOML);
const para = parameters.build(parametersData, argv._, { "shape-weight": argv["shape-weight"] });
const variantsData = formVariantData(rawVariantsData, para);
para.variants = variantsData;
para.variantSelector = parameters.build(variantsData, ["default", ...argv._]);
para.defaultVariant = variantsData.default;
const ligationData = formLigationData(rawLigationData, para);
para.defaultBuildup = ligationData.defaultBuildup;
para.ligation = parameters.build(ligationData.hives, ["default", ...argv._]);
para.naming = {
family: argv.family,
version: argv.ver,
weight: argv["menu-weight"] - 0,
width: argv["menu-width"] - 0,
slant: argv["menu-slant"],
};
return para;
}
async function tryParseToml(str) {
try {
return toml.parse(await fs.readFile(str, "utf-8"));
} catch (e) {
throw new Error(
`Failed to parse configuration file ${str}.\nPlease validate whether there's syntax error.\n${e}`
);
}
}
// Save OTD
async function saveOtd(font) {
if (argv.o === "|") {
process.stdout.write(JSON.stringify(font));
} else {
await fs.writeFile(argv.o, JSON.stringify(font, null, " "));
}
}
// Save char map
function objHashNonEmpty(obj) {
if (!obj) return false;
for (let k in obj) if (obj[k]) return true;
return false;
}
async function saveCharMap(font) {
let charMap = [];
for (const gid in font.glyf) {
const glyph = font.glyf[gid];
if (!glyph) continue;
const glyphIsHidden = /^\./.test(gid);
const typographicFeatures = [];
if (!glyphIsHidden) {
if (/\.hwid$/.test(gid) || /\.fwid$/.test(gid))
typographicFeatures.push("hwid", "fwid");
if (/\.lnum$/.test(gid) || /\.onum$/.test(gid))
typographicFeatures.push("lnum", "onum");
}
charMap.push([
glyph.name,
glyph.unicode,
typographicFeatures,
glyph.featureSelector ? Object.keys(glyph.featureSelector) : [],
]);
}
await fs.writeFile(argv.charmap, JSON.stringify(charMap), "utf8");
}