131 lines
3 KiB
C
131 lines
3 KiB
C
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/***
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*makepath.c - create path name from components
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*
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* Copyright (c) 1987-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* To provide support for creation of full path names from components
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*
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*Revision History:
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* 06-13-87 DFW initial version
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* 08-05-87 JCR Changed appended directory delimeter from '/' to '\'.
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* 09-24-87 JCR Removed 'const' from declarations (caused cl warnings).
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* 12-11-87 JCR Added "_LOAD_DS" to declaration
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* 11-20-89 GJF Fixed copyright, indents. Added const to types of
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* appropriate args.
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* 03-14-90 GJF Replaced _LOAD_DS with _CALLTYPE1 and added #include
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* <cruntime.h>.
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* 10-04-90 GJF New-style function declarator.
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* 06-09-93 KRS Add _MBCS support.
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* 12-07-93 CFW Wide char enable.
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*
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*******************************************************************************/
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#include <cruntime.h>
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#include <stdlib.h>
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#ifdef _MBCS
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#include <mbdata.h>
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#include <mbstring.h>
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#endif
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#include <tchar.h>
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/***
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*void _makepath() - build path name from components
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*
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*Purpose:
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* create a path name from its individual components
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*
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*Entry:
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* _TSCHAR *path - pointer to buffer for constructed path
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* _TSCHAR *drive - pointer to drive component, may or may not contain
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* trailing ':'
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* _TSCHAR *dir - pointer to subdirectory component, may or may not include
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* leading and/or trailing '/' or '\' characters
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* _TSCHAR *fname - pointer to file base name component
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* _TSCHAR *ext - pointer to extension component, may or may not contain
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* a leading '.'.
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*
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*Exit:
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* path - pointer to constructed path name
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*
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*Exceptions:
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*
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*******************************************************************************/
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void __cdecl _tmakepath (
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register _TSCHAR *path,
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const _TSCHAR *drive,
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const _TSCHAR *dir,
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const _TSCHAR *fname,
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const _TSCHAR *ext
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)
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{
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register const _TSCHAR *p;
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/* we assume that the arguments are in the following form (although we
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* do not diagnose invalid arguments or illegal filenames (such as
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* names longer than 8.3 or with illegal characters in them)
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*
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* drive:
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* A ; or
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* A:
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* dir:
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* \top\next\last\ ; or
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* /top/next/last/ ; or
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* either of the above forms with either/both the leading
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* and trailing / or \ removed. Mixed use of '/' and '\' is
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* also tolerated
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* fname:
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* any valid file name
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* ext:
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* any valid extension (none if empty or null )
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*/
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/* copy drive */
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if (drive && *drive) {
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*path++ = *drive;
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*path++ = _T(':');
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}
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/* copy dir */
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if ((p = dir) && *p) {
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do {
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*path++ = *p++;
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}
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while (*p);
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#ifdef _MBCS
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if (*(p=_mbsdec(dir,p)) != _T('/') && *p != _T('\\')) {
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#else
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if (*(p-1) != _T('/') && *(p-1) != _T('\\')) {
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#endif
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*path++ = _T('\\');
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}
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}
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/* copy fname */
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if (p = fname) {
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while (*p) {
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*path++ = *p++;
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}
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}
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/* copy ext, including 0-terminator - check to see if a '.' needs
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* to be inserted.
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*/
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if (p = ext) {
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if (*p && *p != _T('.')) {
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*path++ = _T('.');
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}
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while (*path++ = *p++)
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;
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}
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else {
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/* better add the 0-terminator */
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*path = _T('\0');
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}
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}
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