1d2f787d6a
This rule is *not* currently enabled in mozilla-central, but it appears commented out[1] in the ESLint definition file; see https://searchfox.org/mozilla-central/rev/c80fa7258c935223fe319c5345b58eae85d4c6ae/tools/lint/eslint/eslint-plugin-mozilla/lib/configs/recommended.js#238-239 Unfortunately this rule is, for fairly obvious reasons, impossible to `--fix` automatically (even partially) and each case thus required careful manual analysis. Hence this ESLint rule is, by some margin, probably the most difficult one that we've enabled thus far. However, using this rule does seem like a good idea in general since allowing variable shadowing could lead to subtle (and difficult to find) bugs or at the very least confusing code. Please find additional details about the ESLint rule at https://eslint.org/docs/rules/no-shadow --- [1] Most likely, a very large number of lint errors have prevented this rule from being enabled thus far.
90 lines
2.7 KiB
JavaScript
90 lines
2.7 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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"use strict";
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var fs = require("fs");
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var path = require("path");
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var spawn = require("child_process").spawn;
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var ttxResourcesHome = path.join(__dirname, "..", "ttx");
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var nextTTXTaskId = Date.now();
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function runTtx(ttxResourcesHomePath, fontPath, registerOnCancel, callback) {
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fs.realpath(ttxResourcesHomePath, function(error, realTtxResourcesHomePath) {
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var fontToolsHome = path.join(realTtxResourcesHomePath, "fonttools-code");
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fs.realpath(fontPath, function(errorFontPath, realFontPath) {
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var ttxPath = path.join("Tools", "ttx");
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if (!fs.existsSync(path.join(fontToolsHome, ttxPath))) {
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callback("TTX was not found, please checkout PDF.js submodules");
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return;
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}
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var ttxEnv = {
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PYTHONPATH: path.join(fontToolsHome, "Lib"),
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PYTHONDONTWRITEBYTECODE: true,
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};
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var ttxStdioMode = "ignore";
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var ttx = spawn("python", [ttxPath, realFontPath], {
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cwd: fontToolsHome,
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stdio: ttxStdioMode,
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env: ttxEnv,
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});
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var ttxRunError;
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registerOnCancel(function(reason) {
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ttxRunError = reason;
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callback(reason);
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ttx.kill();
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});
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ttx.on("error", function(errorTtx) {
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ttxRunError = errorTtx;
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callback("Unable to execute ttx");
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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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});
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}
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exports.translateFont = function translateFont(
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content,
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registerOnCancel,
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callback
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) {
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var buffer = Buffer.from(content, "base64");
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var taskId = (nextTTXTaskId++).toString();
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var fontPath = path.join(ttxResourcesHome, taskId + ".otf");
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var resultPath = path.join(ttxResourcesHome, taskId + ".ttx");
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fs.writeFileSync(fontPath, buffer);
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runTtx(ttxResourcesHome, fontPath, registerOnCancel, 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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