https://sourceware.org/bugzilla/show_bug.cgi?id=25713
--- Comment #25 from Fred Eisele <fredrick.eisele at gmail dot com> ---
Use of those functions would give us something like...
size_t filelen;
/* PR 25713: Handle extra long path names possibly containing '..' and '.'.
*/
wchar_t **lpFilePart = {NULL};
const char ccs[] = "ccs=UNICODE";
const int partPathLen = strlen(filename);
const char *partPathOrig = calloc(partPathLen, sizeof(char));
/*
* Convert any UNIX style path separators into the DOS form.
*/
for (int ix=0; ix < partPathLen) switch (filename[ix]) {
case '/': partPathOrig[ix] = '\\'; break;
default: partPathOrig[ix] = filename[ix]
}
/*
* Converting from the partial path from ascii to unicode.
* Calling with lpWideCharStr set to null returns the length.
* Calling with cbMultiByte set to -1 includes the terminating null.
*/
int partPathWSize = MultiByteToWideChar(CP_UTF8, 0, partPathOrig, -1, NULL,
0);
wchar_t *partPath = calloc(partPathWSize, sizeof(wchar_t));
MultiByteToWideChar(CP_UTF8, 0, partPathOrig, -1, partPath, partPathWSize);
/*
* Getting the full path from the provided partial path.
* Calling twice: 1) get the length; 2) resolve the path.
*/
long fullPathWSize = GetFullPathNameW(partPath, 0, NULL, lpFilePart);
wchar_t *fullPath = calloc(fullPathWSize, sizeof(wchar_t));
long copiedPathLen = GetFullPathNameW(partPath, fullPathWSize, fullPath,
lpFilePart);
free(partPath);
char* remode = calloc(strlen(modes) + sizeof(ccs) + 1, sizeof(char));
strcpy(remode, modes);
strcat(remode, ccs);
file = fopen (fullPath, remode);
fprintf(stderr, "k26: %d %s\n", errno, strerror(errno));
file = close_on_exec (file);
fprintf(stderr, "k27: %d %s\n", errno, strerror(errno));
free (fullPath);
return file;
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