2 * mono-path.c: Routines for handling path names.
5 * Gonzalo Paniagua Javier (gonzalo@novell.com)
6 * Miguel de Icaza (miguel@novell.com)
8 * (C) 2006 Novell, Inc. http://www.novell.com
19 /* This is only needed for the mono_path_canonicalize code, MAXSYMLINKS, could be moved */
20 #ifdef HAVE_SYS_PARAM_H
21 #include <sys/param.h>
24 #include "mono-path.h"
26 /* Embedded systems lack MAXSYMLINKS */
31 /* Resolves '..' and '.' references in a path. If the path provided is relative,
32 * it will be relative to the current directory */
34 /* For Native Client, the above is not true. Since there is no getcwd we fill */
35 /* in the file being passed in relative to '.' and don't resolve it */
37 mono_path_canonicalize (const char *path)
39 gchar *abspath, *pos, *lastpos, *dest;
42 if (g_path_is_absolute (path)) {
43 abspath = g_strdup (path);
45 #ifdef __native_client__
47 abspath = g_build_filename (tmpdir, path, NULL);
49 gchar *tmpdir = g_get_current_dir ();
50 abspath = g_build_filename (tmpdir, path, NULL);
56 g_strdelimit (abspath, "/", '\\');
58 abspath = g_strreverse (abspath);
61 dest = lastpos = abspath;
62 pos = strchr (lastpos, G_DIR_SEPARATOR);
65 int len = pos - lastpos;
66 if (len == 1 && lastpos [0] == '.') {
68 } else if (len == 2 && lastpos [0] == '.' && lastpos [1] == '.') {
75 /* The two strings can overlap */
76 memmove (dest, lastpos, len + 1);
81 pos = strchr (lastpos, G_DIR_SEPARATOR);
85 /* Avoid removing the first '\' for UNC paths. We must make sure that it's indeed an UNC path
86 by checking if the \\ pair happens exactly at the end of the string.
88 if (*(lastpos-1) == G_DIR_SEPARATOR && *(lastpos-2) == G_DIR_SEPARATOR && *lastpos == 0)
92 if (dest != lastpos) strcpy (dest, lastpos);
93 return g_strreverse (abspath);
97 * This ensures that the path that we store points to the final file
98 * not a path to a symlink.
100 #if !defined(PLATFORM_NO_SYMLINKS)
102 resolve_symlink (const char *path)
104 char *p, *concat, *dir;
105 char buffer [PATH_MAX+1];
106 int n, iterations = 0;
111 n = readlink (p, buffer, sizeof (buffer)-1);
114 p = mono_path_canonicalize (copy);
120 if (!g_path_is_absolute (buffer)) {
121 dir = g_path_get_dirname (p);
122 concat = g_build_filename (dir, buffer, NULL);
125 concat = g_strdup (buffer);
128 p = mono_path_canonicalize (concat);
130 } while (iterations < MAXSYMLINKS);
137 mono_path_resolve_symlinks (const char *path)
139 #if defined(PLATFORM_NO_SYMLINKS)
140 return mono_path_canonicalize (path);
142 gchar **split = g_strsplit (path, G_DIR_SEPARATOR_S, -1);
143 gchar *p = g_strdup ("");
146 for (i = 0; split [i] != NULL; i++) {
149 // resolve_symlink of "" goes into canonicalize which resolves to cwd
150 if (strcmp (split [i], "") != 0) {
151 tmp = g_strdup_printf ("%s%s", p, split [i]);
153 p = resolve_symlink (tmp);
157 if (split [i+1] != NULL) {
158 tmp = g_strdup_printf ("%s%s", p, G_DIR_SEPARATOR_S);