_write: function JsonStore__write() {
// Don't write if the root is uninitialized or if the store is empty and the
// backing file doesn't yet exist.
if (!this.isRootInited || (this._isEmpty && !file.exists(this.filename)))
return;
// If the store is over quota, don't write. The current under-quota state
// should persist.
if (this.quotaUsage > 1)
return;
// Finally, write.
let stream = file.open(this.filename, "w");
try {
stream.writeAsync(JSON.stringify(this.root), function writeAsync(err) {
if (err)
console.error("Error writing simple storage file: " + this.filename);
else if (this.onWrite)
this.onWrite(this);
}.bind(this));
}
catch (err) {
// writeAsync closes the stream after it's done, so only close on error.
stream.close();
}
}
exports.createTemporaryFileFromData = function (data, tmpName) {
var profileDir = require("system").pathFor("ProfD");
var path = file.join(profileDir, tmpName ? tmpName : "tmp-file");
var tmpFile = file.open(path, "wb");
tmpFile.write(data);
tmpFile.close();
return path;
}