char *
DnD_GetLastDirName(const char *str) // IN
{
size_t end = strlen(str);
size_t start;
size_t res = 0;
if (end != 0 && DIRSEPC == str[end - 1]) {
end--;
}
if (end == 0) {
return 0;
}
start = end;
while (start && DIRSEPC != str[start - 1]) {
start--;
}
/* There should be at lease 1 DIRSEPC before end. */
if (start == 0) {
return 0;
}
res = end - start;
return Unicode_AllocWithLength(str + start, res, STRING_ENCODING_UTF8);
}
Unicode
File_StripSlashes(ConstUnicode path) // IN:
{
Unicode result, volume, dir, base;
/*
* SplitName handles all drive letter/UNC/whatever cases, all we
* have to do is make sure the dir part is stripped of slashes if
* there isn't a base part.
*/
File_SplitName(path, &volume, &dir, &base);
if (!Unicode_IsEmpty(dir) && Unicode_IsEmpty(base)) {
char *dir2 = Unicode_GetAllocBytes(dir, STRING_ENCODING_UTF8);
size_t i = strlen(dir2);
/*
* Don't strip first slash on Windows, since we want at least
* one slash to trail a drive letter/colon or UNC specifier.
*/
#if defined(_WIN32)
while ((i > 1) && (('/' == dir2[i - 1]) ||
('\\' == dir2[i - 1]))) {
#else
while ((i > 0) && ('/' == dir2[i - 1])) {
#endif
i--;
}
Unicode_Free(dir);
dir = Unicode_AllocWithLength(dir2, i, STRING_ENCODING_UTF8);
free(dir2);
}
result = Unicode_Join(volume, dir, base, NULL);
Unicode_Free(volume);
Unicode_Free(dir);
Unicode_Free(base);
return result;
}
/*
*-----------------------------------------------------------------------------
*
* File_MapPathPrefix --
*
* Given a path and a newPrefix -> oldPrefix mapping, transform
* oldPath according to the mapping.
*
* Results:
* The new path, or NULL if there is no mapping.
*
* Side effects:
* The returned string is allocated, free it.
*
*-----------------------------------------------------------------------------
*/
char *
File_MapPathPrefix(const char *oldPath, // IN:
const char **oldPrefixes, // IN:
const char **newPrefixes, // IN:
size_t numPrefixes) // IN:
{
int i;
size_t oldPathLen = strlen(oldPath);
for (i = 0; i < numPrefixes; i++) {
char *newPath;
char *oldPrefix;
char *newPrefix;
size_t oldPrefixLen;
oldPrefix = File_StripSlashes(oldPrefixes[i]);
newPrefix = File_StripSlashes(newPrefixes[i]);
oldPrefixLen = strlen(oldPrefix);
/*
* If the prefix matches on a DIRSEPS boundary, or the prefix is the
* whole string, replace it.
*
* If we don't insist on matching a whole directory name, we could
* mess things of if one directory is a substring of another.
*
* Perform a case-insensitive compare on Windows. (There are
* case-insensitive filesystems on MacOS also, but the problem
* is more acute with Windows because of frequent drive-letter
* case mismatches. So in lieu of actually asking the
* filesystem, let's just go with a simple ifdef for now.)
*/
if ((oldPathLen >= oldPrefixLen) &&
#ifdef _WIN32
(Str_Strncasecmp(oldPath, oldPrefix, oldPrefixLen) == 0) &&
#else
(Str_Strncmp(oldPath, oldPrefix, oldPrefixLen) == 0) &&
#endif
(strchr(VALID_DIRSEPS, oldPath[oldPrefixLen]) ||
(oldPath[oldPrefixLen] == '\0'))) {
size_t newPrefixLen = strlen(newPrefix);
size_t newPathLen = (oldPathLen - oldPrefixLen) + newPrefixLen;
ASSERT(newPathLen > 0);
ASSERT(oldPathLen >= oldPrefixLen);
newPath = Util_SafeMalloc((newPathLen + 1) * sizeof(char));
memcpy(newPath, newPrefix, newPrefixLen);
memcpy(newPath + newPrefixLen, oldPath + oldPrefixLen,
oldPathLen - oldPrefixLen + 1);
/*
* It should only match once. Weird self-referencing mappings
* aren't allowed.
*/
free(oldPrefix);
free(newPrefix);
return newPath;
}
free(oldPrefix);
free(newPrefix);
}
return NULL;
}
char *
Unicode_Normalize(const char *str, // IN
UnicodeNormalizationForm form) // IN
{
UNormalizationMode mode;
UChar *uchars;
char *result;
int32_t normalizedLen;
UErrorCode status = U_ZERO_ERROR;
UCharIterator strIter;
UBool neededToNormalize = FALSE;
uiter_setUTF8(&strIter, (const char *)str, -1);
switch (form) {
case UNICODE_NORMAL_FORM_C:
mode = UNORM_NFC;
break;
case UNICODE_NORMAL_FORM_D:
mode = UNORM_NFD;
break;
default:
NOT_REACHED();
}
normalizedLen = unorm_next(&strIter,
NULL,
0,
mode,
0,
TRUE,
&neededToNormalize,
&status);
if (U_FAILURE(status) && status != U_BUFFER_OVERFLOW_ERROR) {
// We expect U_BUFFER_OVERFLOW_ERROR here. Anything else is a problem.
ASSERT(U_SUCCESS(status));
return NULL;
}
uchars = Util_SafeMalloc(sizeof *uchars * normalizedLen);
// Reset back to the beginning of the UTF-8 input.
(*strIter.move)(&strIter, 0, UITER_START);
status = U_ZERO_ERROR;
normalizedLen = unorm_next(&strIter,
uchars,
normalizedLen,
mode,
0,
TRUE,
&neededToNormalize,
&status);
if (U_FAILURE(status)) {
ASSERT(U_SUCCESS(status));
return NULL;
}
result = Unicode_AllocWithLength(uchars,
normalizedLen * 2,
STRING_ENCODING_UTF16);
free(uchars);
return result;
}