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win32: fix Get_current_directory() for unicode directories

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it was returning things like
C:\TEMP\grafx2\test-à__??????\
instead of the ASCII short path :
C:\TEMP\grafx2\TEST-_~1\

see http://pulkomandy.tk/projects/GrafX2/ticket/45
This commit is contained in:
Thomas Bernard 2019-05-23 11:37:57 +02:00
parent d4aa63964d
commit cb78ac6136
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GPG Key ID: 0FF11B67A5C0863C
1 changed files with 56 additions and 20 deletions
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76
src/io.c
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@ -973,33 +973,68 @@ char * Get_current_directory(char * buf, word * * unicode, size_t size)
return buf;
#elif defined(WIN32)
WCHAR * long_dir, * short_dir;
size_t size_long, size_short;
size_t i;
// first get the current directory in unicode
size_long = (size_t)GetCurrentDirectoryW(0, NULL);
if (size_long == 0)
{
GFX2_Log(GFX2_ERROR, "GetCurrentDirectoryW(0, NULL) failed !\n");
return NULL;
}
long_dir = (WCHAR *)GFX2_malloc(sizeof(WCHAR) * size_long);
if (long_dir == NULL)
return NULL;
if (GetCurrentDirectoryW(size_long, long_dir) == 0)
{
GFX2_Log(GFX2_ERROR, "GetCurrentDirectoryW(%u, %p) failed !\n", (unsigned)size_long, long_dir);
return NULL;
}
// then convert to "short" path (ie C:\PROGRA~1\...)
size_short = (size_t)GetShortPathNameW(long_dir, NULL, 0);
if (size_short == 0)
{
GFX2_Log(GFX2_ERROR, "GetShortPathNameW(%p, NULL, 0) failed !\n", long_dir);
free(long_dir);
return NULL;
}
short_dir = (WCHAR *)GFX2_malloc(sizeof(WCHAR) * size_short);
if (short_dir == NULL)
{
free(long_dir);
return NULL;
}
if (GetShortPathNameW(long_dir, short_dir, size_short) == 0)
{
GFX2_Log(GFX2_ERROR, "GetShortPathNameW(%p, %p, %u) failed !\n", long_dir, short_dir, (unsigned)size_short);
free(long_dir);
free(short_dir);
return NULL;
}
// now copy / return the path
if (buf == NULL)
{
size = (size_t)GetCurrentDirectoryA(0, NULL);
if (size == 0)
return NULL;
size = size_short;
buf = (char *)GFX2_malloc(size);
if (buf == NULL)
return NULL;
}
if (GetCurrentDirectoryA(size, buf) == 0)
return NULL;
if (unicode != NULL)
{
WCHAR * temp = (WCHAR *)GFX2_malloc(sizeof(WCHAR) * size);
if (temp != NULL)
{
size_t i;
for (i = 0; i < size - 1 && buf[i] != '\0'; i++)
temp[i] = (WCHAR)buf[i] & 0x00ff;
temp[i] = 0;
size = GetLongPathNameW(temp, NULL, 0);
*unicode = (word *)GFX2_malloc(size*sizeof(word));
if (*unicode != NULL)
GetLongPathNameW(temp, (WCHAR *)*unicode, size);
free(temp);
free(long_dir);
free(short_dir);
return NULL;
}
}
for (i = 0; i < (size - 1) && short_dir[i]; i++)
buf[i] = (char)short_dir[i];
buf[i] = '\0';
free(short_dir);
if (unicode != NULL)
*unicode = long_dir;
else
free(long_dir);
return buf;
#else
char * ret = getcwd(buf, size);
@ -1036,6 +1071,7 @@ char * Get_current_directory(char * buf, word * * unicode, size_t size)
int Change_directory(const char * path)
{
GFX2_Log(GFX2_DEBUG, "Change_directory(\"%s\")\n", path);
#if defined(__WIN32__) || defined(WIN32)
return (SetCurrentDirectoryA(path) ? 0 : -1);
#else