72 строки
2.7 KiB
C++
72 строки
2.7 KiB
C++
#include <stdio.h>
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#include <string.h>
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#include <wchar.h>
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#include <iostream>
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#include <cassert>
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#include <emscripten.h>
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// This code tests that Unicode std::wstrings can be marshalled between C++ and JS.
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int main() {
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const char asciiString[] = "Hello world!";
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char asciiString2[128] = {};
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EM_ASM_INT({
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var str = Module.AsciiToString($0);
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Module.print(str);
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Module.stringToAscii(str, $1);
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}, asciiString, asciiString2);
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assert(!strcmp(asciiString, asciiString2));
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char asciiString3[128] = {};
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EM_ASM_INT({
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var str = Module.UTF8ToString($0);
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Module.print(str);
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var numBytesWritten = Module.stringToUTF8(str, $1, $2);
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if (numBytesWritten != 12) throw 'stringToUTF8 wrote an invalid length ' + numBytesWritten;
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}, asciiString, asciiString3, 128);
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assert(!strcmp(asciiString, asciiString3));
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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.
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char utf8String2[128] = {};
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EM_ASM_INT({
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var str = Module.UTF8ToString($0);
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Module.print(str);
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var numBytesWritten = Module.stringToUTF8(str, $1, $2);
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if (numBytesWritten != 69) throw 'stringToUTF8 wrote an invalid length ' + numBytesWritten;
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}, utf8String, utf8String2, 128);
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assert(strlen(utf8String) == strlen(utf8String2));
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for(int i = 0; i < strlen(utf8String)+1; ++i)
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if (utf8String[i] != utf8String2[i])
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printf("i=%d:%u,%u\n", i, (unsigned int)(unsigned char)utf8String[i], (unsigned int)(unsigned char)utf8String2[i]);
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assert(!strcmp(utf8String, utf8String2));
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// Test that text gets properly cut off if output buffer is too small.
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EM_ASM_INT({
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var str = Module.UTF8ToString($0);
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Module.print(str);
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var numBytesWritten = Module.stringToUTF8(str, $1, $2);
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if (numBytesWritten != 9) throw 'stringToUTF8 wrote an invalid length ' + numBytesWritten;
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}, utf8String, utf8String2, 10);
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assert(strlen(utf8String2) == 9);
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// Zero-length string.
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EM_ASM_INT({
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var str = Module.UTF8ToString($0);
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Module.print(str);
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var numBytesWritten = Module.stringToUTF8(str, $1, $2);
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if (numBytesWritten != 0) throw 'stringToUTF8 wrote an invalid length ' + numBytesWritten;
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}, utf8String, utf8String2, 1);
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assert(utf8String2[0] == 0);
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// No bytes output.
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utf8String2[0] = 'X';
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EM_ASM_INT({
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var str = Module.UTF8ToString($0);
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Module.print(str);
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var numBytesWritten = Module.stringToUTF8(str, $1, $2);
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if (numBytesWritten != 0) throw 'stringToUTF8 wrote an invalid length ' + numBytesWritten;
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}, utf8String, utf8String2, 0);
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assert(utf8String2[0] == 'X');
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printf("OK.\n");
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}
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