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-rw-r--r--mariadb-connector-c-v_2.3.7/libmariadb/mf_path.c120
1 files changed, 120 insertions, 0 deletions
diff --git a/mariadb-connector-c-v_2.3.7/libmariadb/mf_path.c b/mariadb-connector-c-v_2.3.7/libmariadb/mf_path.c
new file mode 100644
index 0000000..489ccc6
--- /dev/null
+++ b/mariadb-connector-c-v_2.3.7/libmariadb/mf_path.c
@@ -0,0 +1,120 @@
+/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ MA 02111-1301, USA */
+
+#include "mysys_priv.h"
+#include <m_string.h>
+
+static char *find_file_in_path(char *to,const char *name);
+
+ /* Finds where program can find it's files.
+ pre_pathname is found by first locking at progname (argv[0]).
+ if progname contains path the path is returned.
+ else if progname is found in path, return it
+ else if progname is given and POSIX environment variable "_" is set
+ then path is taken from "_".
+ If filename doesn't contain a path append MY_BASEDIR_VERSION or
+ MY_BASEDIR if defined, else append "/my/running".
+ own_path_name_part is concatinated to result.
+ my_path puts result in to and returns to */
+
+my_string my_path(my_string to, const char *progname,
+ const char *own_pathname_part)
+{
+ my_string start,end,prog;
+ DBUG_ENTER("my_path");
+
+ start=to; /* Return this */
+ if (progname && (dirname_part(to, progname) ||
+ find_file_in_path(to,progname) ||
+ ((prog=getenv("_")) != 0 && dirname_part(to,prog))))
+ {
+ VOID(intern_filename(to,to));
+ if (!test_if_hard_path(to))
+ {
+ if (!my_getwd(curr_dir,FN_REFLEN,MYF(0)))
+ bchange(to,0,curr_dir, (uint) strlen(curr_dir), (uint) strlen(to)+1);
+ }
+ }
+ else
+ {
+ if ((end = getenv("MY_BASEDIR_VERSION")) == 0 &&
+ (end = getenv("MY_BASEDIR")) == 0)
+ {
+#ifdef DEFAULT_BASEDIR
+ end= (char*) DEFAULT_BASEDIR;
+#else
+ end= (char*) "/my/";
+#endif
+ }
+ VOID(intern_filename(to,end));
+ to=strend(to);
+ if (to != start && to[-1] != FN_LIBCHAR)
+ *to++ = FN_LIBCHAR;
+ VOID(strmov(to,own_pathname_part));
+ }
+ DBUG_PRINT("exit",("to: '%s'",start));
+ DBUG_RETURN(start);
+} /* my_path */
+
+
+ /* test if file without filename is found in path */
+ /* Returns to if found and to has dirpart if found, else NullS */
+
+#if defined(MSDOS) || defined(_WIN32) || defined(__EMX__) || defined(OS2)
+#define F_OK 0
+#define PATH_SEP ';'
+#define PROGRAM_EXTENSION ".exe"
+#else
+#define PATH_SEP ':'
+#endif
+
+static char *find_file_in_path(char *to, const char *name)
+{
+ char *path,*pos,dir[2];
+ const char *ext="";
+
+ if (!(path=getenv("PATH")))
+ return NullS;
+ dir[0]=FN_LIBCHAR; dir[1]=0;
+#ifdef PROGRAM_EXTENSION
+ if (!fn_ext(name)[0])
+ ext=PROGRAM_EXTENSION;
+#endif
+
+ for (pos=path ; (pos=strchr(pos,PATH_SEP)) ; path= ++pos)
+ {
+ if (path != pos)
+ {
+ strxmov(strnmov(to,path,(uint) (pos-path)),dir,name,ext,NullS);
+ if (!access(to,F_OK))
+ {
+ to[(uint) (pos-path)+1]=0; /* Return path only */
+ return to;
+ }
+ }
+ }
+#ifdef _WIN32
+ to[0]=FN_CURLIB;
+ strxmov(to+1,dir,name,ext,NullS);
+ if (!access(to,F_OK)) /* Test in current dir */
+ {
+ to[2]=0; /* Leave ".\" */
+ return to;
+ }
+#endif
+ return NullS; /* File not found */
+}