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Quake/filenames.h

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+/* 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 = (char *) strchr(_the_path, '/');
+    char *p2 = (char *) 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 = (char *) strrchr(_the_path, '/');
+    char *p2 = (char *) 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 = (char *) strchr(_the_path, ':');
+    if (p != NULL) return p;
+    return (char *) strchr(_the_path, '/');
+}
+static inline char *FIND_LAST_DIRSEP (const char *_the_path) {
+    char *p = (char *) strrchr(_the_path, '/');
+    if (p != NULL) return p;
+    return (char *) 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 (char *) strchr(_the_path, '/');
+}
+static inline char *FIND_LAST_DIRSEP (const char *_the_path) {
+    return (char *) strrchr(_the_path, '/');
+}
+#endif /* C++ */
+
+#endif
+
+#endif /* FILENAMES_H */