+++ /dev/null
-// Copyright (c) 2015 Ryan Prichard
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to
-// deal in the Software without restriction, including without limitation the
-// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
-// sell copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
-// IN THE SOFTWARE.
-
-// Encode every code-point using this module and verify that it matches the
-// encoding generated using Windows WideCharToMultiByte.
-
-#include "UnicodeEncoding.h"
-
-#include <windows.h>
-#include <assert.h>
-#include <stdio.h>
-#include <string.h>
-#include <time.h>
-
-static void correctnessByCode()
-{
- char mbstr1[4];
- char mbstr2[4];
- wchar_t wch[2];
- for (unsigned int code = 0; code < 0x110000; ++code) {
-
- // Surrogate pair reserved region.
- const bool isReserved = (code >= 0xD800 && code <= 0xDFFF);
-
- int mblen1 = encodeUtf8(mbstr1, code);
- if (isReserved ? mblen1 != 0 : mblen1 <= 0) {
- printf("Error: 0x%04X: mblen1=%d\n", code, mblen1);
- continue;
- }
-
- int wlen = encodeUtf16(wch, code);
- if (isReserved ? wlen != 0 : wlen <= 0) {
- printf("Error: 0x%04X: wlen=%d\n", code, wlen);
- continue;
- }
-
- if (isReserved) {
- continue;
- }
-
- if (mblen1 != utf8CharLength(mbstr1[0])) {
- printf("Error: 0x%04X: mblen1=%d, utf8CharLength(mbstr1[0])=%d\n",
- code, mblen1, utf8CharLength(mbstr1[0]));
- continue;
- }
-
- if (code != decodeUtf8(mbstr1)) {
- printf("Error: 0x%04X: decodeUtf8(mbstr1)=%u\n",
- code, decodeUtf8(mbstr1));
- continue;
- }
-
- int mblen2 = WideCharToMultiByte(CP_UTF8, 0, wch, wlen, mbstr2, 4, NULL, NULL);
- if (mblen1 != mblen2) {
- printf("Error: 0x%04X: mblen1=%d, mblen2=%d\n", code, mblen1, mblen2);
- continue;
- }
-
- if (memcmp(mbstr1, mbstr2, mblen1) != 0) {
- printf("Error: 0x%04x: encodings are different\n", code);
- continue;
- }
- }
-}
-
-static const char *encodingStr(char (&output)[128], char (&buf)[4])
-{
- sprintf(output, "Encoding %02X %02X %02X %02X",
- static_cast<uint8_t>(buf[0]),
- static_cast<uint8_t>(buf[1]),
- static_cast<uint8_t>(buf[2]),
- static_cast<uint8_t>(buf[3]));
- return output;
-}
-
-// This test can take a couple of minutes to run.
-static void correctnessByUtf8Encoding()
-{
- for (uint64_t encoding = 0; encoding <= 0xFFFFFFFF; ++encoding) {
-
- char mb[4];
- mb[0] = encoding;
- mb[1] = encoding >> 8;
- mb[2] = encoding >> 16;
- mb[3] = encoding >> 24;
-
- const int mblen = utf8CharLength(mb[0]);
- if (mblen == 0) {
- continue;
- }
-
- // Test this module.
- const uint32_t code1 = decodeUtf8(mb);
- wchar_t ws1[2] = {};
- const int wslen1 = encodeUtf16(ws1, code1);
-
- // Test using Windows. We can't decode a codepoint directly; we have
- // to do UTF8->UTF16, then decode the surrogate pair.
- wchar_t ws2[2] = {};
- const int wslen2 = MultiByteToWideChar(
- CP_UTF8, MB_ERR_INVALID_CHARS, mb, mblen, ws2, 2);
- const uint32_t code2 =
- (wslen2 == 1 ? ws2[0] :
- wslen2 == 2 ? decodeSurrogatePair(ws2[0], ws2[1]) :
- static_cast<uint32_t>(-1));
-
- // Verify that the two implementations match.
- char prefix[128];
- if (code1 != code2) {
- printf("%s: code1=0x%04x code2=0x%04x\n",
- encodingStr(prefix, mb),
- code1, code2);
- continue;
- }
- if (wslen1 != wslen2) {
- printf("%s: wslen1=%d wslen2=%d\n",
- encodingStr(prefix, mb),
- wslen1, wslen2);
- continue;
- }
- if (memcmp(ws1, ws2, wslen1 * sizeof(wchar_t)) != 0) {
- printf("%s: ws1 != ws2\n", encodingStr(prefix, mb));
- continue;
- }
- }
-}
-
-wchar_t g_wch_TEST[] = { 0xD840, 0xDC00 };
-char g_ch_TEST[4];
-wchar_t *volatile g_pwch = g_wch_TEST;
-char *volatile g_pch = g_ch_TEST;
-unsigned int volatile g_code = 0xA2000;
-
-static void performance()
-{
- {
- clock_t start = clock();
- for (long long i = 0; i < 250000000LL; ++i) {
- int mblen = WideCharToMultiByte(CP_UTF8, 0, g_pwch, 2, g_pch, 4, NULL, NULL);
- assert(mblen == 4);
- }
- clock_t stop = clock();
- printf("%.3fns per char\n", (double)(stop - start) / CLOCKS_PER_SEC * 4.0);
- }
-
- {
- clock_t start = clock();
- for (long long i = 0; i < 3000000000LL; ++i) {
- int mblen = encodeUtf8(g_pch, g_code);
- assert(mblen == 4);
- }
- clock_t stop = clock();
- printf("%.3fns per char\n", (double)(stop - start) / CLOCKS_PER_SEC / 3.0);
- }
-}
-
-int main()
-{
- printf("Testing correctnessByCode...\n");
- fflush(stdout);
- correctnessByCode();
-
- printf("Testing correctnessByUtf8Encoding... (may take a couple minutes)\n");
- fflush(stdout);
- correctnessByUtf8Encoding();
-
- printf("Testing performance...\n");
- fflush(stdout);
- performance();
-
- return 0;
-}
projects / VSoRC / .git / blobdiff