64065141b6
The original `test.py` code, seec2376e5cea/test/test.py, did not have any timeout logic for TTX, but it got introduced when `test.py` was ported from Python to JavaScript as `test.js` inc2376e5cea (diff-a561630bb56b82342bc66697aee2ad96efddcbc9d150665abd6fb7ecb7c0ab2f). However, I don't think we've ever actually seen TTX timing out. Moreover, back then we used a very old version of TTX and ran the font tests on the bots (where a hanging process would block other jobs and would require a manual action to fix), so this code was most likely only included defensively. Fortunately, nowadays it should not be necessary anymore because we use the most recent version of TTX (which either returns the result or errors out, but isn't known to hang on inputs) and we run the font tests on GitHub Actions which doesn't block other jobs anymore and also automatically times the job out for us in the unlikely event that a hang would ever occur. In short, we can safely remove this logic to simplify the code and to get rid of a callback.
63 lines
1.8 KiB
JavaScript
63 lines
1.8 KiB
JavaScript
/*
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* Copyright 2014 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import fs from "fs";
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import os from "os";
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import path from "path";
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import { spawn } from "child_process";
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let ttxTaskId = Date.now();
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function runTtx(fontPath, callback) {
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const ttx = spawn("ttx", [fontPath], { stdio: "ignore" });
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let ttxRunError;
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ttx.on("error", function (errorTtx) {
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ttxRunError = errorTtx;
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callback(
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"Unable to execute `ttx`; make sure the `fonttools` dependency is installed"
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);
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});
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ttx.on("close", function (code) {
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if (ttxRunError) {
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return;
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}
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callback();
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});
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}
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function translateFont(content, callback) {
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const buffer = Buffer.from(content, "base64");
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const taskId = (ttxTaskId++).toString();
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const fontPath = path.join(os.tmpdir(), `pdfjs-font-test-${taskId}.otf`);
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const resultPath = path.join(os.tmpdir(), `pdfjs-font-test-${taskId}.ttx`);
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fs.writeFileSync(fontPath, buffer);
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runTtx(fontPath, function (err) {
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fs.unlinkSync(fontPath);
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if (err) {
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console.error(err);
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callback(err);
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} else if (!fs.existsSync(resultPath)) {
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callback("Output was not generated");
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} else {
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callback(null, fs.readFileSync(resultPath));
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fs.unlinkSync(resultPath);
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}
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});
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}
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export { translateFont };
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