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Test Info:
- Manifest: intl/uconv/tests/unit/xpcshell.toml
*
* Uses nsIConverterInputStream to decode UTF-16 text with all combinations
* of UTF-16BE and UTF-16LE with and without BOM.
*
* Sample text is: "Все счастливые семьи похожи друг на друга, каждая несчастливая семья несчастлива по-своему."
*
* The enclosing quotation marks are included in the sample text to test that
* UTF-16LE is recognized even when there is no BOM and the UTF-16LE decoder is
* not explicitly called. This only works when the first character of the text
* is an eight-bit character.
*/
const { NetUtil } = ChromeUtils.importESModule(
);
const beBOM = "%FE%FF";
const leBOM = "%FF%FE";
const sampleUTF16BE =
"%00%22%04%12%04%41%04%35%00%20%04%41%04%47%04%30%04%41%04%42%04%3B%04%38%04%32%04%4B%04%35%00%20%04%41%04%35%04%3C%04%4C%04%38%00%20%04%3F%04%3E%04%45%04%3E%04%36%04%38%00%20%04%34%04%40%04%43%04%33%00%20%04%3D%04%30%00%20%04%34%04%40%04%43%04%33%04%30%00%2C%00%20%04%3A%04%30%04%36%04%34%04%30%04%4F%00%20%04%3D%04%35%04%41%04%47%04%30%04%41%04%42%04%3B%04%38%04%32%04%30%04%4F%00%20%04%41%04%35%04%3C%04%4C%04%4F%00%20%04%3D%04%35%04%41%04%47%04%30%04%41%04%42%04%3B%04%38%04%32%04%30%00%20%04%3F%04%3E%00%2D%04%41%04%32%04%3E%04%35%04%3C%04%43%00%2E%00%22";
const sampleUTF16LE =
"%22%00%12%04%41%04%35%04%20%00%41%04%47%04%30%04%41%04%42%04%3B%04%38%04%32%04%4B%04%35%04%20%00%41%04%35%04%3C%04%4C%04%38%04%20%00%3F%04%3E%04%45%04%3E%04%36%04%38%04%20%00%34%04%40%04%43%04%33%04%20%00%3D%04%30%04%20%00%34%04%40%04%43%04%33%04%30%04%2C%00%20%00%3A%04%30%04%36%04%34%04%30%04%4F%04%20%00%3D%04%35%04%41%04%47%04%30%04%41%04%42%04%3B%04%38%04%32%04%30%04%4F%04%20%00%41%04%35%04%3C%04%4C%04%4F%04%20%00%3D%04%35%04%41%04%47%04%30%04%41%04%42%04%3B%04%38%04%32%04%30%04%20%00%3F%04%3E%04%2D%00%41%04%32%04%3E%04%35%04%3C%04%43%04%2E%00%22%00";
const expected =
'"\u0412\u0441\u0435 \u0441\u0447\u0430\u0441\u0442\u043B\u0438\u0432\u044B\u0435 \u0441\u0435\u043C\u044C\u0438 \u043F\u043E\u0445\u043E\u0436\u0438 \u0434\u0440\u0443\u0433 \u043D\u0430 \u0434\u0440\u0443\u0433\u0430, \u043A\u0430\u0436\u0434\u0430\u044F \u043D\u0435\u0441\u0447\u0430\u0441\u0442\u043B\u0438\u0432\u0430\u044F \u0441\u0435\u043C\u044C\u044F \u043D\u0435\u0441\u0447\u0430\u0441\u0442\u043B\u0438\u0432\u0430 \u043F\u043E-\u0441\u0432\u043E\u0435\u043C\u0443."';
Services.prefs.setBoolPref("security.allow_eval_with_system_principal", true);
registerCleanupFunction(() => {
Services.prefs.clearUserPref("security.allow_eval_with_system_principal");
});
function makeText(withBOM, charset) {
const isBE = charset === "UTF16BE";
const sampleText = isBE ? sampleUTF16BE : sampleUTF16LE;
const bom = isBE ? beBOM : leBOM;
return withBOM ? bom + sampleText : sampleText;
}
function testCase(withBOM, charset, charsetDec, decoder, bufferLength) {
var dataURI =
"data:text/plain;charset=" + charsetDec + "," + makeText(withBOM, charset);
var ConverterInputStream = Components.Constructor(
"@mozilla.org/intl/converter-input-stream;1",
"nsIConverterInputStream",
"init"
);
var channel = NetUtil.newChannel({
uri: dataURI,
loadUsingSystemPrincipal: true,
});
var testInputStream = channel.open();
var testConverter = new ConverterInputStream(
testInputStream,
decoder,
bufferLength,
0xfffd
);
if (!(testConverter instanceof Ci.nsIUnicharLineInputStream)) {
throw new Error("not line input stream");
}
var outStr = "";
var more;
do {
// read the line and check for eof
var line = {};
more = testConverter.readLine(line);
outStr += line.value;
} while (more);
if (outStr != expected) {
dump(
"Failed with BOM = " +
withBOM +
"; charset = " +
charset +
"; charset declaration = " +
charsetDec +
"; decoder = " +
decoder +
"; bufferLength = " +
bufferLength +
"\n"
);
if (outStr.length == expected.length) {
for (let i = 0; i < outStr.length; ++i) {
if (outStr.charCodeAt(i) != expected.charCodeAt(i)) {
dump(
i +
": " +
outStr.charCodeAt(i).toString(16) +
" != " +
expected.charCodeAt(i).toString(16) +
"\n"
);
}
}
}
}
// escape the strings before comparing for better readability
Assert.equal(escape(outStr), escape(expected));
}
function run_test() {
/* BOM charset charset decoder buffer
declaration length */
testCase(true, "UTF16LE", "UTF-16", "UTF-16BE", 64);
testCase(true, "UTF16BE", "UTF-16", "UTF-16LE", 64);
testCase(true, "UTF16LE", "UTF-16", "UTF-16LE", 64);
testCase(true, "UTF16BE", "UTF-16", "UTF-16BE", 64);
testCase(false, "UTF16LE", "UTF-16", "UTF-16LE", 64);
testCase(false, "UTF16BE", "UTF-16", "UTF-16BE", 64);
testCase(true, "UTF16LE", "UTF-16", "UTF-16BE", 65);
testCase(true, "UTF16BE", "UTF-16", "UTF-16LE", 65);
testCase(true, "UTF16LE", "UTF-16", "UTF-16LE", 65);
testCase(true, "UTF16BE", "UTF-16", "UTF-16BE", 65);
testCase(false, "UTF16LE", "UTF-16", "UTF-16LE", 65);
testCase(false, "UTF16BE", "UTF-16", "UTF-16BE", 65);
}