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Test Info:
- Manifest: intl/uconv/tests/unit/xpcshell.toml
const NS_ERROR_ILLEGAL_VALUE = Cr.NS_ERROR_ILLEGAL_VALUE;
var BIS, BOS, _Pipe, COS, FIS, _SS, CIS;
var dataDir;
function run_test() {
BIS = Components.Constructor(
"@mozilla.org/binaryinputstream;1",
"nsIBinaryInputStream",
"setInputStream"
);
BOS = Components.Constructor(
"@mozilla.org/binaryoutputstream;1",
"nsIBinaryOutputStream",
"setOutputStream"
);
_Pipe = Components.Constructor("@mozilla.org/pipe;1", "nsIPipe", "init");
COS = Components.Constructor(
"@mozilla.org/intl/converter-output-stream;1",
"nsIConverterOutputStream",
"init"
);
FIS = Components.Constructor(
"@mozilla.org/network/file-input-stream;1",
"nsIFileInputStream",
"init"
);
_SS = Components.Constructor(
"@mozilla.org/storagestream;1",
"nsIStorageStream",
"init"
);
CIS = Components.Constructor(
"@mozilla.org/intl/converter-input-stream;1",
"nsIConverterInputStream",
"init"
);
dataDir = do_get_file("data/");
test_utf8_1();
test_cross_conversion();
}
const UNICODE_STRINGS = [
"\u00BD + \u00BE == \u00BD\u00B2 + \u00BC + \u00BE",
"AZaz09 \u007F " + // U+000000 to U+00007F
"\u0080 \u0398 \u03BB \u0725 " + // U+000080 to U+0007FF
"\u0964 \u0F5F \u20AC \uFFFB", // U+000800 to U+00FFFF
// there would be strings containing non-BMP code points here, but
// unfortunately JS strings are UCS-2 (and worse yet are treated as
// 16-bit values by the spec), so we have to do gymnastics to work
// with non-BMP -- manual surrogate decoding doesn't work because
// String.prototype.charCodeAt() ignores surrogate pairs and only
// returns 16-bit values
];
// test conversion equality -- keys are names of files containing equivalent
// Unicode data, values are the encoding of the file in the format expected by
// nsIConverter(In|Out)putStream.init
const UNICODE_FILES = {
"unicode-conversion.utf8.txt": "UTF-8",
"unicode-conversion.utf16.txt": "UTF-16",
"unicode-conversion.utf16le.txt": "UTF-16LE",
"unicode-conversion.utf16be.txt": "UTF-16BE",
};
function test_utf8_1() {
for (var i = 0; i < UNICODE_STRINGS.length; i++) {
var pipe = Pipe();
var conv = new COS(pipe.outputStream, "UTF-8");
Assert.ok(conv.writeString(UNICODE_STRINGS[i]));
conv.close();
if (
!equalStreams(
new UTF8(pipe.inputStream),
stringToCodePoints(UNICODE_STRINGS[i])
)
) {
do_throw("UNICODE_STRINGS[" + i + "] not handled correctly");
}
}
}
function test_cross_conversion() {
for (var fn1 in UNICODE_FILES) {
var fin = getBinaryInputStream(fn1);
var ss = StorageStream();
var bos = new BOS(ss.getOutputStream(0));
var av;
while ((av = fin.available()) > 0) {
var data = fin.readByteArray(av);
bos.writeByteArray(data);
}
fin.close();
bos.close();
for (var fn2 in UNICODE_FILES) {
var fin2 = getUnicharInputStream(fn2, UNICODE_FILES[fn2]);
var unichar = new CIS(
ss.newInputStream(0),
UNICODE_FILES[fn1],
8192,
0x0
);
if (!equalUnicharStreams(unichar, fin2)) {
do_throw(
"unequal streams: " + UNICODE_FILES[fn1] + ", " + UNICODE_FILES[fn2]
);
}
}
}
}
// utility functions
function StorageStream() {
return new _SS(8192, Math.pow(2, 32) - 1, null);
}
function getUnicharInputStream(filename, encoding) {
var file = dataDir.clone();
file.append(filename);
const PR_RDONLY = 0x1;
var fis = new FIS(
file,
PR_RDONLY,
"0644",
Ci.nsIFileInputStream.CLOSE_ON_EOF
);
return new CIS(fis, encoding, 8192, 0x0);
}
function getBinaryInputStream(filename) {
var file = dataDir.clone();
file.append(filename);
const PR_RDONLY = 0x1;
var fis = new FIS(
file,
PR_RDONLY,
"0644",
Ci.nsIFileInputStream.CLOSE_ON_EOF
);
return new BIS(fis);
}
function equalStreams(stream, codePoints) {
var currIndex = 0;
while (true) {
var unit = stream.readUnit();
if (unit < 0) {
return currIndex == codePoints.length;
}
if (unit !== codePoints[currIndex++]) {
return false;
}
}
// eslint-disable-next-line no-unreachable
do_throw("not reached");
return false;
}
function equalUnicharStreams(s1, s2) {
var r1, r2;
var str1 = {},
str2 = {};
while (true) {
r1 = s1.readString(1024, str1);
r2 = s2.readString(1024, str2);
if (r1 != r2 || str1.value != str2.value) {
print("r1: " + r1 + ", r2: " + r2);
print(str1.value.length);
print(str2.value.length);
return false;
}
if (r1 == 0 && r2 == 0) {
return true;
}
}
// not reached
// eslint-disable-next-line no-unreachable
return false;
}
function stringToCodePoints(str) {
return str.split("").map(function (v) {
return v.charCodeAt(0);
});
}
function lowbits(n) {
return Math.pow(2, n) - 1;
}
function Pipe() {
return new _Pipe(false, false, 1024, 10, null);
}
// complex charset readers
/**
* Wraps a UTF-8 stream to allow access to the Unicode code points in it.
*
* @param stream
* the stream to wrap
*/
function UTF8(stream) {
this._stream = new BIS(stream);
}
UTF8.prototype = {
// returns numeric code point at front of stream encoded in UTF-8, -1 if at
// end of stream, or throws if valid (and properly encoded!) code point not
// found
readUnit() {
var str = this._stream;
var c, c2, c3, c4, rv;
// if at end of stream, must distinguish failure to read any bytes
// (correct behavior) from failure to read some byte after the first
// in the character
try {
c = str.read8();
} catch (e) {
return -1;
}
if (c < 0x80) {
return c;
}
if (c < 0xc0) {
// c < 11000000
// byte doesn't have enough leading ones (must be at least two)
throw NS_ERROR_ILLEGAL_VALUE;
}
c2 = str.read8();
if (c2 >= 0xc0 || c2 < 0x80) {
throw NS_ERROR_ILLEGAL_VALUE;
} // not 10xxxxxx
if (c < 0xe0) {
// c < 11100000
// two-byte between U+000080 and U+0007FF
rv = ((lowbits(5) & c) << 6) + (lowbits(6) & c2);
// no upper bounds-check needed, by previous lines
if (rv >= 0x80) {
return rv;
}
throw NS_ERROR_ILLEGAL_VALUE;
}
c3 = str.read8();
if (c3 >= 0xc0 || c3 < 0x80) {
throw NS_ERROR_ILLEGAL_VALUE;
} // not 10xxxxxx
if (c < 0xf0) {
// c < 11110000
// three-byte between U+000800 and U+00FFFF
rv =
((lowbits(4) & c) << 12) + ((lowbits(6) & c2) << 6) + (lowbits(6) & c3);
// no upper bounds-check needed, by previous lines
if (rv >= 0xe000 || (rv >= 0x800 && rv <= 0xd7ff)) {
return rv;
}
throw NS_ERROR_ILLEGAL_VALUE;
}
c4 = str.read8();
if (c4 >= 0xc0 || c4 < 0x80) {
throw NS_ERROR_ILLEGAL_VALUE;
} // not 10xxxxxx
if (c < 0xf8) {
// c < 11111000
// four-byte between U+010000 and U+10FFFF
rv =
((lowbits(3) & c) << 18) +
((lowbits(6) & c2) << 12) +
((lowbits(6) & c3) << 6) +
(lowbits(6) & c4);
// need an upper bounds-check since 0x10FFFF isn't (2**n - 1)
if (rv >= 0x10000 && rv <= 0x10ffff) {
return rv;
}
throw NS_ERROR_ILLEGAL_VALUE;
}
// 11111000 or greater -- no UTF-8 mapping
throw NS_ERROR_ILLEGAL_VALUE;
},
};
/**
* Wraps a UTF-16 stream to allow access to the Unicode code points in it.
*
* @param stream
* the stream to wrap
* @param bigEndian
* true for UTF-16BE, false for UTF-16LE, not present at all for UTF-16 with
* a byte-order mark
*/
function UTF16(stream, bigEndian) {
this._stream = new BIS(stream);
if (arguments.length > 1) {
this._bigEndian = bigEndian;
} else {
var bom = this._stream.read16();
if (bom == 0xfeff) {
this._bigEndian = true;
} else if (bom == 0xfffe) {
this._bigEndian = false;
} else {
do_throw("missing BOM: " + bom.toString(16).toUpperCase());
}
}
}
UTF16.prototype = {
// returns numeric code point at front of stream encoded in UTF-16,
// -1 if at end of stream, or throws if UTF-16 code point not found
readUnit() {
var str = this._stream;
// if at end of stream, must distinguish failure to read any bytes
// (correct behavior) from failure to read some byte after the first
// in the character
try {
var b1 = str.read8();
} catch (e) {
return -1;
}
var b2 = str.read8();
var w1 = this._bigEndian ? (b1 << 8) + b2 : (b2 << 8) + b1;
if (w1 > 0xdbff && w1 < 0xe000) {
// second surrogate, but expecting none or first
throw NS_ERROR_ILLEGAL_VALUE;
}
if (w1 > 0xd7ff && w1 < 0xdc00) {
// non-BMP, use surrogate pair
b1 = str.read8();
b2 = str.read8();
var w2 = this._bigEndian ? (b1 << 8) + b2 : (b2 << 8) + b1;
if (w2 < 0xdc00 || w2 > 0xdfff) {
throw NS_ERROR_ILLEGAL_VALUE;
}
var rv = 0x100000 + ((lowbits(10) & w2) << 10) + (lowbits(10) & w1);
if (rv <= 0x10ffff) {
return rv;
}
throw NS_ERROR_ILLEGAL_VALUE;
}
// non-surrogate
return w1;
},
};