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[CRT]

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Rewrite _splitpath.
See issue #6244 for more details.

svn path=/trunk/; revision=52023
This commit is contained in:
Timo Kreuzer 2011-05-31 17:29:49 +00:00
parent 3e584471ab
commit 94ce2dcf66
1 changed files with 61 additions and 46 deletions
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107
reactos/lib/sdk/crt/string/splitp.c
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@ -1,3 +1,10 @@
/*
* PROJECT: ReactOS Kernel
* LICENSE: BSD - See COPYING.ARM in the top level directory
* PURPOSE: CRT: implementation of _splitpath / _wsplitpath
* PROGRAMMERS: Timo Kreuzer
*/
#include <precomp.h>
#include <tchar.h>
@ -6,64 +13,72 @@
*/
void _tsplitpath(const _TCHAR* path, _TCHAR* drive, _TCHAR* dir, _TCHAR* fname, _TCHAR* ext)
{
_TCHAR* tmp_drive = NULL;
_TCHAR* tmp_dir = NULL;
_TCHAR* tmp_ext = NULL;
const _TCHAR *src, *dir_start, *file_start = 0, *ext_start = 0;
tmp_drive = (_TCHAR*)_tcschr(path,':');
/* Truncate all output strings */
if (drive) drive[0] = '\0';
if (dir) dir[0] = '\0';
if (fname) fname[0] = '\0';
if (ext) ext[0] = '\0';
/* Check parameter */
if (!path)
{
__set_errno(EINVAL);
return;
}
/* Skip '\\?\' prefix */
if ((path[0] == '\\') && (path[1] == '\\') &&
(path[2] == '?') && (path[3] == '\\')) path += 4;
if (path[0] == '\0') return;
/* Check if we have a drive letter (only 1 char supported) */
if (path[1] == ':')
{
if (drive)
{
if (tmp_drive)
{
_tcsncpy(drive,tmp_drive-1,2);
*(drive+2) = 0;
drive[0] = path[0];
drive[1] = ':';
drive[2] = '\0';
}
else
{
*drive = 0;
}
}
if (!tmp_drive)
{
tmp_drive = (_TCHAR*)path - 1;
path += 2;
}
tmp_dir = (_TCHAR*)_tcsrchr(path,'\\');
/* Scan the rest of the string */
dir_start = path;
while (*path != '\0')
{
/* Remember last path seperator and last dot */
if ((*path == '\\') || (*path == '/')) file_start = path + 1;
if (*path == '.') ext_start = path;
path++;
}
/* Check if we got */
if (!file_start) file_start = path;
if (!ext_start || ext_start < file_start) ext_start = path;
if (dir)
{
if (tmp_dir)
{
_tcsncpy(dir,tmp_drive+1,tmp_dir-tmp_drive);
*(dir+(tmp_dir-tmp_drive)) = 0;
}
else
{
*dir =0;
}
}
/* If the dot is before the last dir separator, it's part
* of a directory name, not the start of the extension */
if (!tmp_ext || tmp_ext < tmp_dir)
{
tmp_ext = (_TCHAR*)path+_tcslen(path);
}
if (ext)
{
_tcscpy(ext,tmp_ext);
src = dir_start;
while (src < file_start) *dir++ = *src++;
*dir = '\0';
}
if (fname)
{
if (tmp_dir)
src = file_start;
while (src < ext_start) *fname++ = *src++;
*fname = '\0';
}
if (ext)
{
_tcsncpy(fname,tmp_dir+1,tmp_ext-tmp_dir-1);
*(fname+(tmp_ext-tmp_dir-1)) = 0;
}
else
{
_tcsncpy(fname,tmp_drive+1,tmp_ext-tmp_drive-1);
*(fname+(tmp_ext-path))=0;
}
src = ext_start;
while (*src != '\0') *ext++ = *src++;
*ext = '\0';
}
}