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// Demonstrates how U+30FC is sometimes handled as a single-width character
// when it should be handled as a double-width character.
//
// It only runs on computers where 932 is a valid code page. Set the system
// local to "Japanese (Japan)" to ensure this.
//
// The problem seems to happen when U+30FC is printed in a console using the
// Lucida Console font, and only when that font is at certain sizes.
//
#include <windows.h>
#include <assert.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "TestUtil.cc"
#define COUNT_OF(x) (sizeof(x) / sizeof((x)[0]))
static void setFont(const wchar_t *faceName, int pxSize) {
CONSOLE_FONT_INFOEX infoex = {0};
infoex.cbSize = sizeof(infoex);
infoex.dwFontSize.Y = pxSize;
wcsncpy(infoex.FaceName, faceName, COUNT_OF(infoex.FaceName));
BOOL ret = SetCurrentConsoleFontEx(
GetStdHandle(STD_OUTPUT_HANDLE), FALSE, &infoex);
assert(ret);
}
static bool performTest(const wchar_t testChar) {
const HANDLE conout = GetStdHandle(STD_OUTPUT_HANDLE);
SetConsoleTextAttribute(conout, 7);
system("cls");
DWORD actual = 0;
BOOL ret = WriteConsoleW(conout, &testChar, 1, &actual, NULL);
assert(ret && actual == 1);
CHAR_INFO verify[2];
COORD bufSize = {2, 1};
COORD bufCoord = {0, 0};
const SMALL_RECT readRegion = {0, 0, 1, 0};
SMALL_RECT actualRegion = readRegion;
ret = ReadConsoleOutputW(conout, verify, bufSize, bufCoord, &actualRegion);
assert(ret && !memcmp(&readRegion, &actualRegion, sizeof(readRegion)));
assert(verify[0].Char.UnicodeChar == testChar);
if (verify[1].Char.UnicodeChar == testChar) {
// Typical double-width behavior with a TrueType font. Pass.
assert(verify[0].Attributes == 0x107);
assert(verify[1].Attributes == 0x207);
return true;
} else if (verify[1].Char.UnicodeChar == 0) {
// Typical double-width behavior with a Raster Font. Pass.
assert(verify[0].Attributes == 7);
assert(verify[1].Attributes == 0);
return true;
} else if (verify[1].Char.UnicodeChar == L' ') {
// Single-width behavior. Fail.
assert(verify[0].Attributes == 7);
assert(verify[1].Attributes == 7);
return false;
} else {
// Unexpected output.
assert(false);
}
}
int main(int argc, char *argv[]) {
setlocale(LC_ALL, "");
if (argc == 1) {
startChildProcess(L"CHILD");
return 0;
}
assert(SetConsoleCP(932));
assert(SetConsoleOutputCP(932));
const wchar_t testChar = 0x30FC;
const wchar_t *const faceNames[] = {
L"Lucida Console",
L"Consolas",
L"ＭＳ ゴシック",
};
trace("Test started");
for (auto faceName : faceNames) {
for (int px = 1; px <= 50; ++px) {
setFont(faceName, px);
if (!performTest(testChar)) {
trace("FAILURE: %s %dpx", narrowString(faceName).c_str(), px);
}
}
}
trace("Test complete");
return 0;
}
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