gecko-dev/toolkit/crashreporter/KeyValueParser.jsm

63 lines
1.9 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
ChromeUtils.import("resource://gre/modules/Services.jsm");
ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
ChromeUtils.defineModuleGetter(this, "OS",
"resource://gre/modules/osfile.jsm");
var EXPORTED_SYMBOLS = [
"parseKeyValuePairsFromLines",
"parseKeyValuePairs",
"parseKeyValuePairsFromFile",
"parseKeyValuePairsFromFileAsync"
];
var parseKeyValuePairsFromLines = function(lines) {
let data = {};
for (let line of lines) {
if (line == "")
continue;
// can't just .split() because the value might contain = characters
let eq = line.indexOf("=");
if (eq != -1) {
let [key, value] = [line.substring(0, eq),
line.substring(eq + 1)];
if (key && value)
data[key] = value.replace(/\\n/g, "\n").replace(/\\\\/g, "\\");
}
}
return data;
};
function parseKeyValuePairs(text) {
let lines = text.split("\n");
return parseKeyValuePairsFromLines(lines);
}
// some test setup still uses this sync version
function parseKeyValuePairsFromFile(file) {
let fstream = Cc["@mozilla.org/network/file-input-stream;1"].
createInstance(Ci.nsIFileInputStream);
fstream.init(file, -1, 0, 0);
let is = Cc["@mozilla.org/intl/converter-input-stream;1"].
createInstance(Ci.nsIConverterInputStream);
is.init(fstream, "UTF-8", 1024, Ci.nsIConverterInputStream.DEFAULT_REPLACEMENT_CHARACTER);
let str = {};
let contents = "";
while (is.readString(4096, str) != 0) {
contents += str.value;
}
is.close();
fstream.close();
return parseKeyValuePairs(contents);
}
async function parseKeyValuePairsFromFileAsync(file) {
let contents = await OS.File.read(file, { encoding: "utf-8" });
return parseKeyValuePairs(contents);
}