quakespasm/source/filenames.h

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2022-02-08 19:06:54 +00:00
/* Macros for taking apart, interpreting and processing file names.
*
* These are here because some non-Posix (a.k.a. DOSish) systems have
* drive letter brain-damage at the beginning of an absolute file name,
* use forward- and back-slash in path names interchangeably, and
* some of them have case-insensitive file names.
*
* This was based on filenames.h from BFD, the Binary File Descriptor
* library, Copyright (C) 2000-2016 Free Software Foundation, Inc.,
* and changed by O. Sezer <sezero@users.sourceforge.net> for our needs.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef FILENAMES_H
#define FILENAMES_H
#include <string.h>
/* ---------------------- Windows, DOS, OS2: ---------------------- */
#if defined(__MSDOS__) || defined(__DOS__) || defined(__DJGPP__) || \
defined(_MSDOS) || defined(__OS2__) || defined(__EMX__) || \
defined(_WIN32) || defined(_Windows) || defined(__WINDOWS__) || \
defined(__NT__) || defined(__CYGWIN__)
#define HAVE_DOS_BASED_FILE_SYSTEM 1
#define HAVE_CASE_INSENSITIVE_FILE_SYSTEM 1
#define HAS_DRIVE_SPEC(f) ((f)[0] && ((f)[1] == ':'))
#define STRIP_DRIVE_SPEC(f) ((f) + 2)
#define IS_DIR_SEPARATOR(c) ((c) == '/' || (c) == '\\')
/* both '/' and '\\' work as dir separator. djgpp likes changing
* '\\' into '/', so I define DIR_SEPARATOR_CHAR as '/' for djgpp,
* '\\' otherwise. */
#ifdef __DJGPP__
#define DIR_SEPARATOR_CHAR '/'
#define DIR_SEPARATOR_STR "/"
#else
#define DIR_SEPARATOR_CHAR '\\'
#define DIR_SEPARATOR_STR "\\"
#endif
/* Note that IS_ABSOLUTE_PATH accepts d:foo as well, although it is
only semi-absolute. This is because the users of IS_ABSOLUTE_PATH
want to know whether to prepend the current working directory to
a file name, which should not be done with a name like d:foo. */
#define IS_ABSOLUTE_PATH(f) (IS_DIR_SEPARATOR((f)[0]) || HAS_DRIVE_SPEC((f)))
#ifdef __cplusplus
static inline char *FIND_FIRST_DIRSEP(char *_the_path) {
/* FIXME: What about C:FOO ? */
char *p1 = strchr(_the_path, '/');
char *p2 = strchr(_the_path, '\\');
if (p1 == NULL) return p2;
if (p2 == NULL) return p1;
return (p1 < p2)? p1 : p2;
}
static inline char *FIND_LAST_DIRSEP (char *_the_path) {
/* FIXME: What about C:FOO ? */
char *p1 = strrchr(_the_path, '/');
char *p2 = strrchr(_the_path, '\\');
if (p1 == NULL) return p2;
if (p2 == NULL) return p1;
return (p1 > p2)? p1 : p2;
}
static inline const char *FIND_FIRST_DIRSEP(const char *_the_path) {
/* FIXME: What about C:FOO ? */
const char *p1 = strchr(_the_path, '/');
const char *p2 = strchr(_the_path, '\\');
if (p1 == NULL) return p2;
if (p2 == NULL) return p1;
return (p1 < p2)? p1 : p2;
}
static inline const char *FIND_LAST_DIRSEP (const char *_the_path) {
/* FIXME: What about C:FOO ? */
const char *p1 = strrchr(_the_path, '/');
const char *p2 = strrchr(_the_path, '\\');
if (p1 == NULL) return p2;
if (p2 == NULL) return p1;
return (p1 > p2)? p1 : p2;
}
#else
static inline char *FIND_FIRST_DIRSEP(const char *_the_path) {
/* FIXME: What about C:FOO ? */
char *p1 = strchr(_the_path, '/');
char *p2 = strchr(_the_path, '\\');
if (p1 == NULL) return p2;
if (p2 == NULL) return p1;
return (p1 < p2)? p1 : p2;
}
static inline char *FIND_LAST_DIRSEP (const char *_the_path) {
/* FIXME: What about C:FOO ? */
char *p1 = strrchr(_the_path, '/');
char *p2 = strrchr(_the_path, '\\');
if (p1 == NULL) return p2;
if (p2 == NULL) return p1;
return (p1 > p2)? p1 : p2;
}
#endif /* C++ */
/* ----------------- AmigaOS, MorphOS, AROS, etc: ----------------- */
#elif defined(__MORPHOS__) || defined(__AROS__) || defined(AMIGAOS) || \
defined(__amigaos__) || defined(__amigaos4__) ||defined(__amigados__) || \
defined(AMIGA) || defined(_AMIGA) || defined(__AMIGA__)
#define HAS_DRIVE_SPEC(f) (0) /* */
#define STRIP_DRIVE_SPEC(f) (f) /* */
#define IS_DIR_SEPARATOR(c) ((c) == '/' || (c) == ':')
#define DIR_SEPARATOR_CHAR '/'
#define DIR_SEPARATOR_STR "/"
#define IS_ABSOLUTE_PATH(f) (IS_DIR_SEPARATOR((f)[0]) || (strchr((f), ':')))
#define HAVE_CASE_INSENSITIVE_FILE_SYSTEM 1
#ifdef __cplusplus
static inline char *FIND_FIRST_DIRSEP(char *_the_path) {
char *p = strchr(_the_path, ':');
if (p != NULL) return p;
return strchr(_the_path, '/');
}
static inline char *FIND_LAST_DIRSEP (char *_the_path) {
char *p = strrchr(_the_path, '/');
if (p != NULL) return p;
return strchr(_the_path, ':');
}
static inline const char *FIND_FIRST_DIRSEP(const char *_the_path) {
const char *p = strchr(_the_path, ':');
if (p != NULL) return p;
return strchr(_the_path, '/');
}
static inline const char *FIND_LAST_DIRSEP (const char *_the_path) {
const char *p = strrchr(_the_path, '/');
if (p != NULL) return p;
return strchr(_the_path, ':');
}
#else
static inline char *FIND_FIRST_DIRSEP(const char *_the_path) {
char *p = strchr(_the_path, ':');
if (p != NULL) return p;
return strchr(_the_path, '/');
}
static inline char *FIND_LAST_DIRSEP (const char *_the_path) {
char *p = strrchr(_the_path, '/');
if (p != NULL) return p;
return strchr(_the_path, ':');
}
#endif /* C++ */
/* ---------------------- assumed UNIX-ish : ---------------------- */
#else /* */
#define IS_DIR_SEPARATOR(c) ((c) == '/')
#define DIR_SEPARATOR_CHAR '/'
#define DIR_SEPARATOR_STR "/"
#define IS_ABSOLUTE_PATH(f) (IS_DIR_SEPARATOR((f)[0]))
#define HAS_DRIVE_SPEC(f) (0)
#define STRIP_DRIVE_SPEC(f) (f)
#ifdef __cplusplus
static inline char *FIND_FIRST_DIRSEP(char *_the_path) {
return strchr(_the_path, '/');
}
static inline char *FIND_LAST_DIRSEP (char *_the_path) {
return strrchr(_the_path, '/');
}
static inline const char *FIND_FIRST_DIRSEP(const char *_the_path) {
return strchr(_the_path, '/');
}
static inline const char *FIND_LAST_DIRSEP (const char *_the_path) {
return strrchr(_the_path, '/');
}
#else
static inline char *FIND_FIRST_DIRSEP(const char *_the_path) {
return strchr(_the_path, '/');
}
static inline char *FIND_LAST_DIRSEP (const char *_the_path) {
return strrchr(_the_path, '/');
}
#endif /* C++ */
#endif
#endif /* FILENAMES_H */