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// Copyright 2015 The Emscripten Authors. All rights reserved.
// Emscripten is available under two separate licenses, the MIT license and the
// University of Illinois/NCSA Open Source License. Both these licenses can be
// found in the LICENSE file.
#include <stdio.h>
#include <string.h>
#include <wchar.h>
#include <iostream>
#include <cassert>
#include <emscripten.h>
// This code tests that Unicode std::wstrings can be marshalled between C++ and JS.
int main() {
const char asciiString[] = "Hello world!";
char asciiString2[128] = {};
EM_ASM({
var str = Module.AsciiToString($0);
out(str);
Module.stringToAscii(str, $1);
}, asciiString, asciiString2);
assert(!strcmp(asciiString, asciiString2));
char asciiString3[128] = {};
EM_ASM({
var str = Module.UTF8ToString($0);
out(str);
var numBytesWritten = Module.stringToUTF8(str, $1, $2);
if (numBytesWritten != 12) throw 'stringToUTF8 wrote an invalid length ' + numBytesWritten;
}, asciiString, asciiString3, 128);
assert(!strcmp(asciiString, asciiString3));
const char utf8String[] = u8"Hyv\u00E4\u00E4 p\u00E4iv\u00E4\u00E4! T\u00F6\u00F6\u00F6\u00F6t! abc\u2603\u20AC\U0002007C123 --- abc\u2603\u20AC\U0002007C123."; // U+2603 is snowman, U+20AC is the Euro sign, U+2007C is a Chinese Han character that looks like three raindrops.
char utf8String2[128] = {};
EM_ASM({
var str = Module.UTF8ToString($0);
out(str);
var numBytesWritten = Module.stringToUTF8(str, $1, $2);
if (numBytesWritten != 69) throw 'stringToUTF8 wrote an invalid length ' + numBytesWritten;
}, utf8String, utf8String2, 128);
assert(strlen(utf8String) == strlen(utf8String2));
for(int i = 0; i < strlen(utf8String)+1; ++i)
if (utf8String[i] != utf8String2[i])
printf("i=%d:%u,%u\n", i, (unsigned int)(unsigned char)utf8String[i], (unsigned int)(unsigned char)utf8String2[i]);
assert(!strcmp(utf8String, utf8String2));
// Test that text gets properly cut off if output buffer is too small.
EM_ASM({
var str = Module.UTF8ToString($0);
out(str);
var numBytesWritten = Module.stringToUTF8(str, $1, $2);
if (numBytesWritten != 9) throw 'stringToUTF8 wrote an invalid length ' + numBytesWritten;
}, utf8String, utf8String2, 10);
assert(strlen(utf8String2) == 9);
// Zero-length string.
EM_ASM({
var str = Module.UTF8ToString($0);
out(str);
var numBytesWritten = Module.stringToUTF8(str, $1, $2);
if (numBytesWritten != 0) throw 'stringToUTF8 wrote an invalid length ' + numBytesWritten;
}, utf8String, utf8String2, 1);
assert(utf8String2[0] == 0);
// No bytes output.
utf8String2[0] = 'X';
EM_ASM({
var str = Module.UTF8ToString($0);
out(str);
var numBytesWritten = Module.stringToUTF8(str, $1, $2);
if (numBytesWritten != 0) throw 'stringToUTF8 wrote an invalid length ' + numBytesWritten;
}, utf8String, utf8String2, 0);
assert(utf8String2[0] == 'X');
printf("OK.\n");
}