2003-11-12 00:52:45 +01:00
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/*-------------------------------------------------------------------------
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*
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* path.c
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* portable path handling routines
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*
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* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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*
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* IDENTIFICATION
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2004-05-25 03:42:08 +02:00
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* $PostgreSQL: pgsql/src/port/path.c,v 1.13 2004/05/25 01:42:08 momjian Exp $
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2003-11-12 00:52:45 +01:00
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*
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*-------------------------------------------------------------------------
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*/
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2003-04-04 22:42:13 +02:00
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#include "c.h"
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2004-05-21 22:56:50 +02:00
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2003-04-04 22:42:13 +02:00
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#include <ctype.h>
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2004-05-21 22:56:50 +02:00
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#include "pg_config_paths.h"
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2004-05-17 16:35:34 +02:00
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#ifndef WIN32
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#define ISSEP(ch) ((ch) == '/')
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#else
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#define ISSEP(ch) ((ch) == '/' || (ch) == '\\')
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#endif
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static bool relative_path(const char *path1, const char *path2);
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static void trim_directory(char *path);
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static void trim_trailing_separator(char *path);
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/* Move to last of consecutive separators or to null byte */
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#define MOVE_TO_SEP_END(p) \
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{ \
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while (ISSEP((p)[0]) && (ISSEP((p)[1]) || !(p)[1])) \
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(p)++; \
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}
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2003-04-04 22:42:13 +02:00
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/*
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* first_path_separator
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*/
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2003-08-04 02:43:34 +02:00
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char *
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first_path_separator(const char *filename)
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2003-04-04 22:42:13 +02:00
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{
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2004-05-17 16:35:34 +02:00
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char *p;
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for (p = (char *)filename; *p; p++)
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if (ISSEP(*p))
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return p;
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return NULL;
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2003-04-04 22:42:13 +02:00
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}
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/*
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* last_path_separator
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*/
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2003-08-04 02:43:34 +02:00
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char *
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last_path_separator(const char *filename)
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2003-04-04 22:42:13 +02:00
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{
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2004-05-17 16:35:34 +02:00
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char *p, *ret = NULL;
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for (p = (char *)filename; *p; p++)
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if (ISSEP(*p))
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ret = p;
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return ret;
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2003-04-04 22:42:13 +02:00
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}
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2004-03-09 05:49:02 +01:00
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/*
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* make all paths look like unix, with forward slashes
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* also strip any trailing slash.
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*
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* The Windows command processor will accept suitably quoted paths
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* with forward slashes, but barfs badly with mixed forward and back
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* slashes. Removing the trailing slash on a path means we never get
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* ugly double slashes. Don't remove a leading slash, though.
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*/
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void
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canonicalize_path(char *path)
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{
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2004-05-17 16:35:34 +02:00
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#ifdef WIN32
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2004-03-09 05:49:02 +01:00
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char *p;
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for (p = path; *p; p++)
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{
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if (*p == '\\')
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*p = '/';
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}
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2004-05-17 16:35:34 +02:00
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#endif
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trim_trailing_separator(path);
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2004-03-09 05:49:02 +01:00
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}
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2003-04-04 22:42:13 +02:00
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/*
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* Extracts the actual name of the program as called.
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*/
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2004-05-12 15:38:49 +02:00
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const char *
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get_progname(const char *argv0)
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2003-04-04 22:42:13 +02:00
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{
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if (!last_path_separator(argv0))
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return argv0;
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else
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return last_path_separator(argv0) + 1;
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}
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2004-05-11 23:57:15 +02:00
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2004-05-17 16:35:34 +02:00
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/*
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* get_share_path
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*/
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void
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get_share_path(const char *my_exec_path, char *ret_path)
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{
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2004-05-25 03:00:30 +02:00
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char path[MAXPGPATH];
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2004-05-21 22:56:50 +02:00
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if (relative_path(PGBINDIR, PGSHAREDIR))
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2004-05-17 16:35:34 +02:00
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{
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2004-05-25 03:00:30 +02:00
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StrNCpy(path, my_exec_path, MAXPGPATH);
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trim_directory(path); /* trim off binary */
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trim_directory(path); /* trim off /bin */
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snprintf(ret_path, MAXPGPATH, "%s/share", path);
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2004-05-17 16:35:34 +02:00
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}
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else
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2004-05-21 22:56:50 +02:00
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StrNCpy(ret_path, PGSHAREDIR, MAXPGPATH);
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2004-05-17 16:35:34 +02:00
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}
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/*
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* get_etc_path
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*/
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void
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get_etc_path(const char *my_exec_path, char *ret_path)
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{
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2004-05-25 03:00:30 +02:00
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char path[MAXPGPATH];
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2004-05-17 16:35:34 +02:00
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if (relative_path(PGBINDIR, SYSCONFDIR))
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{
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2004-05-25 03:00:30 +02:00
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StrNCpy(path, my_exec_path, MAXPGPATH);
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trim_directory(path);
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trim_directory(path);
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snprintf(ret_path, MAXPGPATH, "%s/etc", path);
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2004-05-17 16:35:34 +02:00
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}
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else
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StrNCpy(ret_path, SYSCONFDIR, MAXPGPATH);
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}
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/*
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* get_include_path
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*/
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void
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get_include_path(const char *my_exec_path, char *ret_path)
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{
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2004-05-25 03:00:30 +02:00
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char path[MAXPGPATH];
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2004-05-17 16:35:34 +02:00
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if (relative_path(PGBINDIR, INCLUDEDIR))
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{
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2004-05-25 03:00:30 +02:00
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StrNCpy(path, my_exec_path, MAXPGPATH);
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trim_directory(path);
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trim_directory(path);
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snprintf(ret_path, MAXPGPATH, "%s/include", path);
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2004-05-17 16:35:34 +02:00
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}
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else
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StrNCpy(ret_path, INCLUDEDIR, MAXPGPATH);
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}
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/*
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* get_pkginclude_path
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*/
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void
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get_pkginclude_path(const char *my_exec_path, char *ret_path)
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{
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2004-05-25 03:00:30 +02:00
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char path[MAXPGPATH];
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2004-05-17 16:35:34 +02:00
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if (relative_path(PGBINDIR, PKGINCLUDEDIR))
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{
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2004-05-25 03:00:30 +02:00
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StrNCpy(path, my_exec_path, MAXPGPATH);
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trim_directory(path);
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trim_directory(path);
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snprintf(ret_path, MAXPGPATH, "%s/include", path);
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2004-05-17 16:35:34 +02:00
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}
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else
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StrNCpy(ret_path, PKGINCLUDEDIR, MAXPGPATH);
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}
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/*
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* get_pkglib_path
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*
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* Return library path, either relative to /bin or hardcoded
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*/
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void
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get_pkglib_path(const char *my_exec_path, char *ret_path)
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{
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2004-05-25 03:00:30 +02:00
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char path[MAXPGPATH];
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2004-05-17 16:35:34 +02:00
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if (relative_path(PGBINDIR, PKGLIBDIR))
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{
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2004-05-25 03:00:30 +02:00
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StrNCpy(path, my_exec_path, MAXPGPATH);
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trim_directory(path);
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trim_directory(path);
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snprintf(ret_path, MAXPGPATH, "%s/lib", path);
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2004-05-17 16:35:34 +02:00
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}
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else
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StrNCpy(ret_path, PKGLIBDIR, MAXPGPATH);
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}
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2004-05-25 03:00:30 +02:00
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/*
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* get_locale_path
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*
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* Return locale path, either relative to /bin or hardcoded
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*/
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void
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get_locale_path(const char *my_exec_path, char *ret_path)
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{
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char path[MAXPGPATH];
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if (relative_path(PGBINDIR, LOCALEDIR))
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{
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StrNCpy(path, my_exec_path, MAXPGPATH);
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trim_directory(path);
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trim_directory(path);
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snprintf(ret_path, MAXPGPATH, "%s/share/locale", path);
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}
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else
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StrNCpy(ret_path, LOCALEDIR, MAXPGPATH);
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}
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/*
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* set_pglocale
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*
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* Set application-specific locale
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*
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* This function takes an argv[0] rather than a full path.
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*/
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void
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set_pglocale(const char *argv0, const char *app)
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{
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#ifdef ENABLE_NLS
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char path[MAXPGPATH];
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char my_exec_path[MAXPGPATH];
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2004-05-25 03:42:08 +02:00
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/* don't set LC_ALL in the backend */
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if (strcmp(app, "postgres") != 0)
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setlocale(LC_ALL, "");
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2004-05-25 03:00:30 +02:00
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if (find_my_exec(argv0, my_exec_path) < 0)
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return;
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get_locale_path(argv0, path);
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bindtextdomain(app, path);
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textdomain(app);
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#endif
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}
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2004-05-17 16:35:34 +02:00
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/*
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* relative_path
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*
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* Do the supplied paths differ only in their last component?
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*/
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static bool
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relative_path(const char *path1, const char *path2)
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{
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#ifdef WIN32
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/* Driver letters match? */
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if (isalpha(*path1) && path1[1] == ':' &&
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(!isalpha(*path2) || !path2[1] == ':'))
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return false;
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if ((!isalpha(*path1) || !path1[1] == ':') &&
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2004-05-18 05:36:45 +02:00
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(isalpha(*path2) && path2[1] == ':'))
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2004-05-17 16:35:34 +02:00
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return false;
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if (isalpha(*path1) && path1[1] == ':' &&
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isalpha(*path2) && path2[1] == ':')
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{
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if (toupper(*path1) != toupper(*path2))
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return false;
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path1 += 2;
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path2 += 2;
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}
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#endif
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while (1)
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{
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/* Move past adjacent slashes like //, and trailing ones */
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MOVE_TO_SEP_END(path1);
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MOVE_TO_SEP_END(path2);
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/* One of the paths is done? */
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if (!*path1 || !*path2)
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break;
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/* Win32 filesystem is case insensitive */
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#ifndef WIN32
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if (*path1 != *path2)
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#else
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if (toupper((unsigned char) *path1) != toupper((unsigned char)*path2))
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#endif
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break;
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path1++;
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path2++;
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}
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/* both done, identical? */
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if (!*path1 && !*path2)
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return false;
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/* advance past directory name */
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while (!ISSEP(*path1) && *path1)
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path1++;
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while (!ISSEP(*path2) && *path2)
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path2++;
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MOVE_TO_SEP_END(path1);
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MOVE_TO_SEP_END(path2);
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/* Are both strings done? */
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if (!*path1 && !*path2)
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return true;
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else
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return false;
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}
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/*
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* trim_directory
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*
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* Trim trailing directory from path
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*/
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static void
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trim_directory(char *path)
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{
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char *p;
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if (path[0] == '\0')
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return;
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for (p = path + strlen(path) - 1; ISSEP(*p) && p > path; p--)
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;
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for (; !ISSEP(*p) && p > path; p--)
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;
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*p = '\0';
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return;
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}
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/*
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* trim_trailing_separator
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*/
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static void
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trim_trailing_separator(char *path)
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{
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char *p = path + strlen(path);
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/* trim off trailing slashes */
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if (p > path)
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for (p--; p >= path && ISSEP(*p); p--)
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*p = '\0';
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}
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