1 /* gfileutils.c - File utility functions
3 * Copyright 2000 Red Hat, Inc.
5 * GLib is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU Lesser General Public License as
7 * published by the Free Software Foundation; either version 2 of the
8 * License, or (at your option) any later version.
10 * GLib is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with GLib; see the file COPYING.LIB. If not,
17 * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
22 #include "glibconfig.h"
33 #include <sys/types.h>
41 #endif /* G_OS_WIN32 */
51 #include "gfileutils.h"
56 #ifdef HAVE_LINUX_MAGIC_H /* for btrfs check */
57 #include <linux/magic.h>
64 * @title: File Utilities
65 * @short_description: various file-related functions
67 * There is a group of functions which wrap the common POSIX functions
68 * dealing with filenames (g_open(), g_rename(), g_mkdir(), g_stat(),
69 * g_unlink(), g_remove(), g_fopen(), g_freopen()). The point of these
70 * wrappers is to make it possible to handle file names with any Unicode
71 * characters in them on Windows without having to use ifdefs and the
72 * wide character API in the application code.
74 * The pathname argument should be in the GLib file name encoding.
75 * On POSIX this is the actual on-disk encoding which might correspond
76 * to the locale settings of the process (or the
77 * <envar>G_FILENAME_ENCODING</envar> environment variable), or not.
79 * On Windows the GLib file name encoding is UTF-8. Note that the
80 * Microsoft C library does not use UTF-8, but has separate APIs for
81 * current system code page and wide characters (UTF-16). The GLib
82 * wrappers call the wide character API if present (on modern Windows
83 * systems), otherwise convert to/from the system code page.
85 * Another group of functions allows to open and read directories
86 * in the GLib file name encoding. These are g_dir_open(),
87 * g_dir_read_name(), g_dir_rewind(), g_dir_close().
92 * @G_FILE_ERROR_EXIST: Operation not permitted; only the owner of
93 * the file (or other resource) or processes with special privileges
94 * can perform the operation.
95 * @G_FILE_ERROR_ISDIR: File is a directory; you cannot open a directory
96 * for writing, or create or remove hard links to it.
97 * @G_FILE_ERROR_ACCES: Permission denied; the file permissions do not
98 * allow the attempted operation.
99 * @G_FILE_ERROR_NAMETOOLONG: Filename too long.
100 * @G_FILE_ERROR_NOENT: No such file or directory. This is a "file
101 * doesn't exist" error for ordinary files that are referenced in
102 * contexts where they are expected to already exist.
103 * @G_FILE_ERROR_NOTDIR: A file that isn't a directory was specified when
104 * a directory is required.
105 * @G_FILE_ERROR_NXIO: No such device or address. The system tried to
106 * use the device represented by a file you specified, and it
107 * couldn't find the device. This can mean that the device file was
108 * installed incorrectly, or that the physical device is missing or
109 * not correctly attached to the computer.
110 * @G_FILE_ERROR_NODEV: The underlying file system of the specified file
111 * does not support memory mapping.
112 * @G_FILE_ERROR_ROFS: The directory containing the new link can't be
113 * modified because it's on a read-only file system.
114 * @G_FILE_ERROR_TXTBSY: Text file busy.
115 * @G_FILE_ERROR_FAULT: You passed in a pointer to bad memory.
116 * (GLib won't reliably return this, don't pass in pointers to bad
118 * @G_FILE_ERROR_LOOP: Too many levels of symbolic links were encountered
119 * in looking up a file name. This often indicates a cycle of symbolic
121 * @G_FILE_ERROR_NOSPC: No space left on device; write operation on a
122 * file failed because the disk is full.
123 * @G_FILE_ERROR_NOMEM: No memory available. The system cannot allocate
124 * more virtual memory because its capacity is full.
125 * @G_FILE_ERROR_MFILE: The current process has too many files open and
126 * can't open any more. Duplicate descriptors do count toward this
128 * @G_FILE_ERROR_NFILE: There are too many distinct file openings in the
130 * @G_FILE_ERROR_BADF: Bad file descriptor; for example, I/O on a
131 * descriptor that has been closed or reading from a descriptor open
132 * only for writing (or vice versa).
133 * @G_FILE_ERROR_INVAL: Invalid argument. This is used to indicate
134 * various kinds of problems with passing the wrong argument to a
136 * @G_FILE_ERROR_PIPE: Broken pipe; there is no process reading from the
137 * other end of a pipe. Every library function that returns this
138 * error code also generates a `SIGPIPE' signal; this signal
139 * terminates the program if not handled or blocked. Thus, your
140 * program will never actually see this code unless it has handled
141 * or blocked `SIGPIPE'.
142 * @G_FILE_ERROR_AGAIN: Resource temporarily unavailable; the call might
143 * work if you try again later.
144 * @G_FILE_ERROR_INTR: Interrupted function call; an asynchronous signal
145 * occurred and prevented completion of the call. When this
146 * happens, you should try the call again.
147 * @G_FILE_ERROR_IO: Input/output error; usually used for physical read
148 * or write errors. i.e. the disk or other physical device hardware
149 * is returning errors.
150 * @G_FILE_ERROR_PERM: Operation not permitted; only the owner of the
151 * file (or other resource) or processes with special privileges can
152 * perform the operation.
153 * @G_FILE_ERROR_NOSYS: Function not implemented; this indicates that
154 * the system is missing some functionality.
155 * @G_FILE_ERROR_FAILED: Does not correspond to a UNIX error code; this
156 * is the standard "failed for unspecified reason" error code present
157 * in all #GError error code enumerations. Returned if no specific
160 * Values corresponding to @errno codes returned from file operations
161 * on UNIX. Unlike @errno codes, GFileError values are available on
162 * all systems, even Windows. The exact meaning of each code depends
163 * on what sort of file operation you were performing; the UNIX
164 * documentation gives more details. The following error code descriptions
165 * come from the GNU C Library manual, and are under the copyright
168 * It's not very portable to make detailed assumptions about exactly
169 * which errors will be returned from a given operation. Some errors
170 * don't occur on some systems, etc., sometimes there are subtle
171 * differences in when a system will report a given error, etc.
177 * Error domain for file operations. Errors in this domain will
178 * be from the #GFileError enumeration. See #GError for information
184 * @G_FILE_TEST_IS_REGULAR: %TRUE if the file is a regular file
185 * (not a directory). Note that this test will also return %TRUE
186 * if the tested file is a symlink to a regular file.
187 * @G_FILE_TEST_IS_SYMLINK: %TRUE if the file is a symlink.
188 * @G_FILE_TEST_IS_DIR: %TRUE if the file is a directory.
189 * @G_FILE_TEST_IS_EXECUTABLE: %TRUE if the file is executable.
190 * @G_FILE_TEST_EXISTS: %TRUE if the file exists. It may or may not
193 * A test to perform on a file using g_file_test().
197 * g_mkdir_with_parents:
198 * @pathname: a pathname in the GLib file name encoding
199 * @mode: permissions to use for newly created directories
201 * Create a directory if it doesn't already exist. Create intermediate
202 * parent directories as needed, too.
204 * Returns: 0 if the directory already exists, or was successfully
205 * created. Returns -1 if an error occurred, with errno set.
210 g_mkdir_with_parents (const gchar
*pathname
,
215 if (pathname
== NULL
|| *pathname
== '\0')
221 fn
= g_strdup (pathname
);
223 if (g_path_is_absolute (fn
))
224 p
= (gchar
*) g_path_skip_root (fn
);
230 while (*p
&& !G_IS_DIR_SEPARATOR (*p
))
238 if (!g_file_test (fn
, G_FILE_TEST_EXISTS
))
240 if (g_mkdir (fn
, mode
) == -1 && errno
!= EEXIST
)
242 int errno_save
= errno
;
248 else if (!g_file_test (fn
, G_FILE_TEST_IS_DIR
))
256 *p
++ = G_DIR_SEPARATOR
;
257 while (*p
&& G_IS_DIR_SEPARATOR (*p
))
270 * @filename: a filename to test in the GLib file name encoding
271 * @test: bitfield of #GFileTest flags
273 * Returns %TRUE if any of the tests in the bitfield @test are
274 * %TRUE. For example, <literal>(G_FILE_TEST_EXISTS |
275 * G_FILE_TEST_IS_DIR)</literal> will return %TRUE if the file exists;
276 * the check whether it's a directory doesn't matter since the existence
277 * test is %TRUE. With the current set of available tests, there's no point
278 * passing in more than one test at a time.
280 * Apart from %G_FILE_TEST_IS_SYMLINK all tests follow symbolic links,
281 * so for a symbolic link to a regular file g_file_test() will return
282 * %TRUE for both %G_FILE_TEST_IS_SYMLINK and %G_FILE_TEST_IS_REGULAR.
284 * Note, that for a dangling symbolic link g_file_test() will return
285 * %TRUE for %G_FILE_TEST_IS_SYMLINK and %FALSE for all other flags.
287 * You should never use g_file_test() to test whether it is safe
288 * to perform an operation, because there is always the possibility
289 * of the condition changing before you actually perform the operation.
290 * For example, you might think you could use %G_FILE_TEST_IS_SYMLINK
291 * to know whether it is safe to write to a file without being
292 * tricked into writing into a different location. It doesn't work!
294 * /* DON'T DO THIS */
295 * if (!g_file_test (filename, G_FILE_TEST_IS_SYMLINK))
297 * fd = g_open (filename, O_WRONLY);
298 * /* write to fd */
302 * Another thing to note is that %G_FILE_TEST_EXISTS and
303 * %G_FILE_TEST_IS_EXECUTABLE are implemented using the access()
304 * system call. This usually doesn't matter, but if your program
305 * is setuid or setgid it means that these tests will give you
306 * the answer for the real user ID and group ID, rather than the
307 * effective user ID and group ID.
309 * On Windows, there are no symlinks, so testing for
310 * %G_FILE_TEST_IS_SYMLINK will always return %FALSE. Testing for
311 * %G_FILE_TEST_IS_EXECUTABLE will just check that the file exists and
312 * its name indicates that it is executable, checking for well-known
313 * extensions and those listed in the <envar>PATHEXT</envar> environment variable.
315 * Return value: whether a test was %TRUE
318 g_file_test (const gchar
*filename
,
322 /* stuff missing in std vc6 api */
323 # ifndef INVALID_FILE_ATTRIBUTES
324 # define INVALID_FILE_ATTRIBUTES -1
326 # ifndef FILE_ATTRIBUTE_DEVICE
327 # define FILE_ATTRIBUTE_DEVICE 64
330 wchar_t *wfilename
= g_utf8_to_utf16 (filename
, -1, NULL
, NULL
, NULL
);
332 if (wfilename
== NULL
)
335 attributes
= GetFileAttributesW (wfilename
);
339 if (attributes
== INVALID_FILE_ATTRIBUTES
)
342 if (test
& G_FILE_TEST_EXISTS
)
345 if (test
& G_FILE_TEST_IS_REGULAR
)
347 if ((attributes
& (FILE_ATTRIBUTE_DIRECTORY
| FILE_ATTRIBUTE_DEVICE
)) == 0)
351 if (test
& G_FILE_TEST_IS_DIR
)
353 if ((attributes
& FILE_ATTRIBUTE_DIRECTORY
) != 0)
357 /* "while" so that we can exit this "loop" with a simple "break" */
358 while (test
& G_FILE_TEST_IS_EXECUTABLE
)
360 const gchar
*lastdot
= strrchr (filename
, '.');
361 const gchar
*pathext
= NULL
, *p
;
367 if (_stricmp (lastdot
, ".exe") == 0 ||
368 _stricmp (lastdot
, ".cmd") == 0 ||
369 _stricmp (lastdot
, ".bat") == 0 ||
370 _stricmp (lastdot
, ".com") == 0)
373 /* Check if it is one of the types listed in %PATHEXT% */
375 pathext
= g_getenv ("PATHEXT");
379 pathext
= g_utf8_casefold (pathext
, -1);
381 lastdot
= g_utf8_casefold (lastdot
, -1);
382 extlen
= strlen (lastdot
);
387 const gchar
*q
= strchr (p
, ';');
390 if (extlen
== q
- p
&&
391 memcmp (lastdot
, p
, extlen
) == 0)
393 g_free ((gchar
*) pathext
);
394 g_free ((gchar
*) lastdot
);
403 g_free ((gchar
*) pathext
);
404 g_free ((gchar
*) lastdot
);
410 if ((test
& G_FILE_TEST_EXISTS
) && (access (filename
, F_OK
) == 0))
413 if ((test
& G_FILE_TEST_IS_EXECUTABLE
) && (access (filename
, X_OK
) == 0))
418 /* For root, on some POSIX systems, access (filename, X_OK)
419 * will succeed even if no executable bits are set on the
420 * file. We fall through to a stat test to avoid that.
424 test
&= ~G_FILE_TEST_IS_EXECUTABLE
;
426 if (test
& G_FILE_TEST_IS_SYMLINK
)
430 if ((lstat (filename
, &s
) == 0) && S_ISLNK (s
.st_mode
))
434 if (test
& (G_FILE_TEST_IS_REGULAR
|
436 G_FILE_TEST_IS_EXECUTABLE
))
440 if (stat (filename
, &s
) == 0)
442 if ((test
& G_FILE_TEST_IS_REGULAR
) && S_ISREG (s
.st_mode
))
445 if ((test
& G_FILE_TEST_IS_DIR
) && S_ISDIR (s
.st_mode
))
448 /* The extra test for root when access (file, X_OK) succeeds.
450 if ((test
& G_FILE_TEST_IS_EXECUTABLE
) &&
451 ((s
.st_mode
& S_IXOTH
) ||
452 (s
.st_mode
& S_IXUSR
) ||
453 (s
.st_mode
& S_IXGRP
)))
462 G_DEFINE_QUARK (g
-file
-error
-quark
, g_file_error
)
465 * g_file_error_from_errno:
466 * @err_no: an "errno" value
468 * Gets a #GFileError constant based on the passed-in @err_no.
469 * For example, if you pass in <literal>EEXIST</literal> this function returns
470 * #G_FILE_ERROR_EXIST. Unlike <literal>errno</literal> values, you can portably
471 * assume that all #GFileError values will exist.
473 * Normally a #GFileError value goes into a #GError returned
474 * from a function that manipulates files. So you would use
475 * g_file_error_from_errno() when constructing a #GError.
477 * Return value: #GFileError corresponding to the given @errno
480 g_file_error_from_errno (gint err_no
)
486 return G_FILE_ERROR_EXIST
;
492 return G_FILE_ERROR_ISDIR
;
498 return G_FILE_ERROR_ACCES
;
504 return G_FILE_ERROR_NAMETOOLONG
;
510 return G_FILE_ERROR_NOENT
;
516 return G_FILE_ERROR_NOTDIR
;
522 return G_FILE_ERROR_NXIO
;
528 return G_FILE_ERROR_NODEV
;
534 return G_FILE_ERROR_ROFS
;
540 return G_FILE_ERROR_TXTBSY
;
546 return G_FILE_ERROR_FAULT
;
552 return G_FILE_ERROR_LOOP
;
558 return G_FILE_ERROR_NOSPC
;
564 return G_FILE_ERROR_NOMEM
;
570 return G_FILE_ERROR_MFILE
;
576 return G_FILE_ERROR_NFILE
;
582 return G_FILE_ERROR_BADF
;
588 return G_FILE_ERROR_INVAL
;
594 return G_FILE_ERROR_PIPE
;
600 return G_FILE_ERROR_AGAIN
;
606 return G_FILE_ERROR_INTR
;
612 return G_FILE_ERROR_IO
;
618 return G_FILE_ERROR_PERM
;
624 return G_FILE_ERROR_NOSYS
;
629 return G_FILE_ERROR_FAILED
;
635 get_contents_stdio (const gchar
*display_filename
,
644 gsize total_bytes
= 0;
645 gsize total_allocated
= 0;
648 g_assert (f
!= NULL
);
654 bytes
= fread (buf
, 1, sizeof (buf
), f
);
657 while ((total_bytes
+ bytes
+ 1) > total_allocated
)
660 total_allocated
*= 2;
662 total_allocated
= MIN (bytes
+ 1, sizeof (buf
));
664 tmp
= g_try_realloc (str
, total_allocated
);
671 g_dngettext (GETTEXT_PACKAGE
, "Could not allocate %lu byte to read file \"%s\"", "Could not allocate %lu bytes to read file \"%s\"", (gulong
)total_allocated
),
672 (gulong
) total_allocated
,
685 g_file_error_from_errno (save_errno
),
686 _("Error reading file '%s': %s"),
688 g_strerror (save_errno
));
693 memcpy (str
+ total_bytes
, buf
, bytes
);
695 if (total_bytes
+ bytes
< total_bytes
)
700 _("File \"%s\" is too large"),
706 total_bytes
+= bytes
;
711 if (total_allocated
== 0)
713 str
= g_new (gchar
, 1);
717 str
[total_bytes
] = '\0';
720 *length
= total_bytes
;
737 get_contents_regfile (const gchar
*display_filename
,
738 struct stat
*stat_buf
,
749 size
= stat_buf
->st_size
;
751 alloc_size
= size
+ 1;
752 buf
= g_try_malloc (alloc_size
);
759 g_dngettext (GETTEXT_PACKAGE
, "Could not allocate %lu byte to read file \"%s\"", "Could not allocate %lu bytes to read file \"%s\"", (gulong
)alloc_size
),
767 while (bytes_read
< size
)
771 rc
= read (fd
, buf
+ bytes_read
, size
- bytes_read
);
777 int save_errno
= errno
;
782 g_file_error_from_errno (save_errno
),
783 _("Failed to read from file '%s': %s"),
785 g_strerror (save_errno
));
796 buf
[bytes_read
] = '\0';
799 *length
= bytes_read
;
815 get_contents_posix (const gchar
*filename
,
820 struct stat stat_buf
;
822 gchar
*display_filename
= g_filename_display_name (filename
);
824 /* O_BINARY useful on Cygwin */
825 fd
= open (filename
, O_RDONLY
|O_BINARY
);
829 int save_errno
= errno
;
833 g_file_error_from_errno (save_errno
),
834 _("Failed to open file '%s': %s"),
836 g_strerror (save_errno
));
837 g_free (display_filename
);
842 /* I don't think this will ever fail, aside from ENOMEM, but. */
843 if (fstat (fd
, &stat_buf
) < 0)
845 int save_errno
= errno
;
850 g_file_error_from_errno (save_errno
),
851 _("Failed to get attributes of file '%s': fstat() failed: %s"),
853 g_strerror (save_errno
));
854 g_free (display_filename
);
859 if (stat_buf
.st_size
> 0 && S_ISREG (stat_buf
.st_mode
))
861 gboolean retval
= get_contents_regfile (display_filename
,
867 g_free (display_filename
);
876 f
= fdopen (fd
, "r");
880 int save_errno
= errno
;
884 g_file_error_from_errno (save_errno
),
885 _("Failed to open file '%s': fdopen() failed: %s"),
887 g_strerror (save_errno
));
888 g_free (display_filename
);
893 retval
= get_contents_stdio (display_filename
, f
, contents
, length
, error
);
894 g_free (display_filename
);
900 #else /* G_OS_WIN32 */
903 get_contents_win32 (const gchar
*filename
,
910 gchar
*display_filename
= g_filename_display_name (filename
);
913 f
= g_fopen (filename
, "rb");
920 g_file_error_from_errno (save_errno
),
921 _("Failed to open file '%s': %s"),
923 g_strerror (save_errno
));
924 g_free (display_filename
);
929 retval
= get_contents_stdio (display_filename
, f
, contents
, length
, error
);
930 g_free (display_filename
);
938 * g_file_get_contents:
939 * @filename: (type filename): name of a file to read contents from, in the GLib file name encoding
940 * @contents: (out) (array length=length) (element-type guint8): location to store an allocated string, use g_free() to free
941 * the returned string
942 * @length: (allow-none): location to store length in bytes of the contents, or %NULL
943 * @error: return location for a #GError, or %NULL
945 * Reads an entire file into allocated memory, with good error
948 * If the call was successful, it returns %TRUE and sets @contents to the file
949 * contents and @length to the length of the file contents in bytes. The string
950 * stored in @contents will be nul-terminated, so for text files you can pass
951 * %NULL for the @length argument. If the call was not successful, it returns
952 * %FALSE and sets @error. The error domain is #G_FILE_ERROR. Possible error
953 * codes are those in the #GFileError enumeration. In the error case,
954 * @contents is set to %NULL and @length is set to zero.
956 * Return value: %TRUE on success, %FALSE if an error occurred
959 g_file_get_contents (const gchar
*filename
,
964 g_return_val_if_fail (filename
!= NULL
, FALSE
);
965 g_return_val_if_fail (contents
!= NULL
, FALSE
);
972 return get_contents_win32 (filename
, contents
, length
, error
);
974 return get_contents_posix (filename
, contents
, length
, error
);
979 rename_file (const char *old_name
,
980 const char *new_name
,
984 if (g_rename (old_name
, new_name
) == -1)
986 int save_errno
= errno
;
987 gchar
*display_old_name
= g_filename_display_name (old_name
);
988 gchar
*display_new_name
= g_filename_display_name (new_name
);
992 g_file_error_from_errno (save_errno
),
993 _("Failed to rename file '%s' to '%s': g_rename() failed: %s"),
996 g_strerror (save_errno
));
998 g_free (display_old_name
);
999 g_free (display_new_name
);
1008 write_to_temp_file (const gchar
*contents
,
1010 const gchar
*dest_file
,
1014 gchar
*display_name
;
1022 tmp_name
= g_strdup_printf ("%s.XXXXXX", dest_file
);
1025 fd
= g_mkstemp_full (tmp_name
, O_RDWR
| O_BINARY
, 0666);
1028 display_name
= g_filename_display_name (tmp_name
);
1034 g_file_error_from_errno (save_errno
),
1035 _("Failed to create file '%s': %s"),
1036 display_name
, g_strerror (save_errno
));
1042 file
= fdopen (fd
, "wb");
1048 g_file_error_from_errno (save_errno
),
1049 _("Failed to open file '%s' for writing: fdopen() failed: %s"),
1051 g_strerror (save_errno
));
1054 g_unlink (tmp_name
);
1065 n_written
= fwrite (contents
, 1, length
, file
);
1067 if (n_written
< length
)
1073 g_file_error_from_errno (save_errno
),
1074 _("Failed to write file '%s': fwrite() failed: %s"),
1076 g_strerror (save_errno
));
1079 g_unlink (tmp_name
);
1086 if (fflush (file
) != 0)
1092 g_file_error_from_errno (save_errno
),
1093 _("Failed to write file '%s': fflush() failed: %s"),
1095 g_strerror (save_errno
));
1098 g_unlink (tmp_name
);
1103 #ifdef BTRFS_SUPER_MAGIC
1107 /* On Linux, on btrfs, skip the fsync since rename-over-existing is
1108 * guaranteed to be atomic and this is the only case in which we
1109 * would fsync() anyway.
1112 if (fstatfs (fd
, &buf
) == 0 && buf
.f_type
== BTRFS_SUPER_MAGIC
)
1119 struct stat statbuf
;
1122 /* If the final destination exists and is > 0 bytes, we want to sync the
1123 * newly written file to ensure the data is on disk when we rename over
1124 * the destination. Otherwise if we get a system crash we can lose both
1125 * the new and the old file on some filesystems. (I.E. those that don't
1126 * guarantee the data is written to the disk before the metadata.)
1128 if (g_lstat (dest_file
, &statbuf
) == 0 &&
1129 statbuf
.st_size
> 0 &&
1130 fsync (fileno (file
)) != 0)
1136 g_file_error_from_errno (save_errno
),
1137 _("Failed to write file '%s': fsync() failed: %s"),
1139 g_strerror (save_errno
));
1142 g_unlink (tmp_name
);
1149 #ifdef BTRFS_SUPER_MAGIC
1154 if (fclose (file
) == EOF
)
1160 g_file_error_from_errno (save_errno
),
1161 _("Failed to close file '%s': fclose() failed: %s"),
1163 g_strerror (save_errno
));
1165 g_unlink (tmp_name
);
1170 retval
= g_strdup (tmp_name
);
1174 g_free (display_name
);
1180 * g_file_set_contents:
1181 * @filename: (type filename): name of a file to write @contents to, in the GLib file name
1183 * @contents: (array length=length) (element-type guint8): string to write to the file
1184 * @length: length of @contents, or -1 if @contents is a nul-terminated string
1185 * @error: return location for a #GError, or %NULL
1187 * Writes all of @contents to a file named @filename, with good error checking.
1188 * If a file called @filename already exists it will be overwritten.
1190 * This write is atomic in the sense that it is first written to a temporary
1191 * file which is then renamed to the final name. Notes:
1194 * On Unix, if @filename already exists hard links to @filename will break.
1195 * Also since the file is recreated, existing permissions, access control
1196 * lists, metadata etc. may be lost. If @filename is a symbolic link,
1197 * the link itself will be replaced, not the linked file.
1200 * On Windows renaming a file will not remove an existing file with the
1201 * new name, so on Windows there is a race condition between the existing
1202 * file being removed and the temporary file being renamed.
1205 * On Windows there is no way to remove a file that is open to some
1206 * process, or mapped into memory. Thus, this function will fail if
1207 * @filename already exists and is open.
1211 * If the call was successful, it returns %TRUE. If the call was not successful,
1212 * it returns %FALSE and sets @error. The error domain is #G_FILE_ERROR.
1213 * Possible error codes are those in the #GFileError enumeration.
1215 * Note that the name for the temporary file is constructed by appending up
1216 * to 7 characters to @filename.
1218 * Return value: %TRUE on success, %FALSE if an error occurred
1223 g_file_set_contents (const gchar
*filename
,
1224 const gchar
*contents
,
1228 gchar
*tmp_filename
;
1230 GError
*rename_error
= NULL
;
1232 g_return_val_if_fail (filename
!= NULL
, FALSE
);
1233 g_return_val_if_fail (error
== NULL
|| *error
== NULL
, FALSE
);
1234 g_return_val_if_fail (contents
!= NULL
|| length
== 0, FALSE
);
1235 g_return_val_if_fail (length
>= -1, FALSE
);
1238 length
= strlen (contents
);
1240 tmp_filename
= write_to_temp_file (contents
, length
, filename
, error
);
1248 if (!rename_file (tmp_filename
, filename
, &rename_error
))
1252 g_unlink (tmp_filename
);
1253 g_propagate_error (error
, rename_error
);
1257 #else /* G_OS_WIN32 */
1259 /* Renaming failed, but on Windows this may just mean
1260 * the file already exists. So if the target file
1261 * exists, try deleting it and do the rename again.
1263 if (!g_file_test (filename
, G_FILE_TEST_EXISTS
))
1265 g_unlink (tmp_filename
);
1266 g_propagate_error (error
, rename_error
);
1271 g_error_free (rename_error
);
1273 if (g_unlink (filename
) == -1)
1275 gchar
*display_filename
= g_filename_display_name (filename
);
1277 int save_errno
= errno
;
1281 g_file_error_from_errno (save_errno
),
1282 _("Existing file '%s' could not be removed: g_unlink() failed: %s"),
1284 g_strerror (save_errno
));
1286 g_free (display_filename
);
1287 g_unlink (tmp_filename
);
1292 if (!rename_file (tmp_filename
, filename
, error
))
1294 g_unlink (tmp_filename
);
1305 g_free (tmp_filename
);
1310 * get_tmp_file based on the mkstemp implementation from the GNU C library.
1311 * Copyright (C) 1991,92,93,94,95,96,97,98,99 Free Software Foundation, Inc.
1313 typedef gint (*GTmpFileCallback
) (const gchar
*, gint
, gint
);
1316 get_tmp_file (gchar
*tmpl
,
1323 static const char letters
[] =
1324 "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
1325 static const int NLETTERS
= sizeof (letters
) - 1;
1328 static int counter
= 0;
1330 g_return_val_if_fail (tmpl
!= NULL
, -1);
1332 /* find the last occurrence of "XXXXXX" */
1333 XXXXXX
= g_strrstr (tmpl
, "XXXXXX");
1335 if (!XXXXXX
|| strncmp (XXXXXX
, "XXXXXX", 6))
1341 /* Get some more or less random data. */
1342 g_get_current_time (&tv
);
1343 value
= (tv
.tv_usec
^ tv
.tv_sec
) + counter
++;
1345 for (count
= 0; count
< 100; value
+= 7777, ++count
)
1349 /* Fill in the random bits. */
1350 XXXXXX
[0] = letters
[v
% NLETTERS
];
1352 XXXXXX
[1] = letters
[v
% NLETTERS
];
1354 XXXXXX
[2] = letters
[v
% NLETTERS
];
1356 XXXXXX
[3] = letters
[v
% NLETTERS
];
1358 XXXXXX
[4] = letters
[v
% NLETTERS
];
1360 XXXXXX
[5] = letters
[v
% NLETTERS
];
1362 fd
= f (tmpl
, flags
, mode
);
1366 else if (errno
!= EEXIST
)
1367 /* Any other error will apply also to other names we might
1368 * try, and there are 2^32 or so of them, so give up now.
1373 /* We got out of the loop because we ran out of combinations to try. */
1378 /* Some GTmpFileCallback implementations.
1380 * Note: we cannot use open() or g_open() directly because even though
1381 * they appear compatible, they may be vararg functions and calling
1382 * varargs functions through a non-varargs type is undefined.
1385 wrap_g_mkdir (const gchar
*filename
,
1386 int flags G_GNUC_UNUSED
,
1389 /* tmpl is in UTF-8 on Windows, thus use g_mkdir() */
1390 return g_mkdir (filename
, mode
);
1394 wrap_g_open (const gchar
*filename
,
1398 return g_open (filename
, flags
, mode
);
1403 * @tmpl: (type filename): template directory name
1404 * @mode: permissions to create the temporary directory with
1406 * Creates a temporary directory. See the mkdtemp() documentation
1407 * on most UNIX-like systems.
1409 * The parameter is a string that should follow the rules for
1410 * mkdtemp() templates, i.e. contain the string "XXXXXX".
1411 * g_mkdtemp() is slightly more flexible than mkdtemp() in that the
1412 * sequence does not have to occur at the very end of the template
1413 * and you can pass a @mode. The X string will be modified to form
1414 * the name of a directory that didn't exist. The string should be
1415 * in the GLib file name encoding. Most importantly, on Windows it
1416 * should be in UTF-8.
1418 * Return value: A pointer to @tmpl, which has been modified
1419 * to hold the directory name. In case of errors, %NULL is
1420 * returned, and %errno will be set.
1425 g_mkdtemp_full (gchar
*tmpl
,
1428 if (get_tmp_file (tmpl
, wrap_g_mkdir
, 0, mode
) == -1)
1436 * @tmpl: (type filename): template directory name
1438 * Creates a temporary directory. See the mkdtemp() documentation
1439 * on most UNIX-like systems.
1441 * The parameter is a string that should follow the rules for
1442 * mkdtemp() templates, i.e. contain the string "XXXXXX".
1443 * g_mkdtemp() is slightly more flexible than mkdtemp() in that the
1444 * sequence does not have to occur at the very end of the template
1445 * and you can pass a @mode and additional @flags. The X string will
1446 * be modified to form the name of a directory that didn't exist.
1447 * The string should be in the GLib file name encoding. Most importantly,
1448 * on Windows it should be in UTF-8.
1450 * Return value: A pointer to @tmpl, which has been modified
1451 * to hold the directory name. In case of errors, %NULL is
1452 * returned and %errno will be set.
1457 g_mkdtemp (gchar
*tmpl
)
1459 return g_mkdtemp_full (tmpl
, 0700);
1464 * @tmpl: (type filename): template filename
1465 * @flags: flags to pass to an open() call in addition to O_EXCL
1466 * and O_CREAT, which are passed automatically
1467 * @mode: permissions to create the temporary file with
1469 * Opens a temporary file. See the mkstemp() documentation
1470 * on most UNIX-like systems.
1472 * The parameter is a string that should follow the rules for
1473 * mkstemp() templates, i.e. contain the string "XXXXXX".
1474 * g_mkstemp_full() is slightly more flexible than mkstemp()
1475 * in that the sequence does not have to occur at the very end of the
1476 * template and you can pass a @mode and additional @flags. The X
1477 * string will be modified to form the name of a file that didn't exist.
1478 * The string should be in the GLib file name encoding. Most importantly,
1479 * on Windows it should be in UTF-8.
1481 * Return value: A file handle (as from open()) to the file
1482 * opened for reading and writing. The file handle should be
1483 * closed with close(). In case of errors, -1 is returned
1484 * and %errno will be set.
1489 g_mkstemp_full (gchar
*tmpl
,
1493 /* tmpl is in UTF-8 on Windows, thus use g_open() */
1494 return get_tmp_file (tmpl
, wrap_g_open
,
1495 flags
| O_CREAT
| O_EXCL
, mode
);
1500 * @tmpl: (type filename): template filename
1502 * Opens a temporary file. See the mkstemp() documentation
1503 * on most UNIX-like systems.
1505 * The parameter is a string that should follow the rules for
1506 * mkstemp() templates, i.e. contain the string "XXXXXX".
1507 * g_mkstemp() is slightly more flexible than mkstemp() in that the
1508 * sequence does not have to occur at the very end of the template.
1509 * The X string will be modified to form the name of a file that
1510 * didn't exist. The string should be in the GLib file name encoding.
1511 * Most importantly, on Windows it should be in UTF-8.
1513 * Return value: A file handle (as from open()) to the file
1514 * opened for reading and writing. The file is opened in binary
1515 * mode on platforms where there is a difference. The file handle
1516 * should be closed with close(). In case of errors, -1 is
1517 * returned and %errno will be set.
1520 g_mkstemp (gchar
*tmpl
)
1522 return g_mkstemp_full (tmpl
, O_RDWR
| O_BINARY
, 0600);
1526 g_get_tmp_name (const gchar
*tmpl
,
1542 if ((slash
= strchr (tmpl
, G_DIR_SEPARATOR
)) != NULL
1544 || (strchr (tmpl
, '/') != NULL
&& (slash
= "/"))
1548 gchar
*display_tmpl
= g_filename_display_name (tmpl
);
1555 G_FILE_ERROR_FAILED
,
1556 _("Template '%s' invalid, should not contain a '%s'"),
1558 g_free (display_tmpl
);
1563 if (strstr (tmpl
, "XXXXXX") == NULL
)
1565 gchar
*display_tmpl
= g_filename_display_name (tmpl
);
1568 G_FILE_ERROR_FAILED
,
1569 _("Template '%s' doesn't contain XXXXXX"),
1571 g_free (display_tmpl
);
1575 tmpdir
= g_get_tmp_dir ();
1577 if (G_IS_DIR_SEPARATOR (tmpdir
[strlen (tmpdir
) - 1]))
1580 sep
= G_DIR_SEPARATOR_S
;
1582 fulltemplate
= g_strconcat (tmpdir
, sep
, tmpl
, NULL
);
1584 retval
= get_tmp_file (fulltemplate
, f
, flags
, mode
);
1587 int save_errno
= errno
;
1588 gchar
*display_fulltemplate
= g_filename_display_name (fulltemplate
);
1592 g_file_error_from_errno (save_errno
),
1593 _("Failed to create file '%s': %s"),
1594 display_fulltemplate
, g_strerror (save_errno
));
1595 g_free (display_fulltemplate
);
1596 g_free (fulltemplate
);
1600 *name_used
= fulltemplate
;
1607 * @tmpl: (type filename) (allow-none): Template for file name, as in
1608 * g_mkstemp(), basename only, or %NULL for a default template
1609 * @name_used: (out) (type filename): location to store actual name used,
1611 * @error: return location for a #GError
1613 * Opens a file for writing in the preferred directory for temporary
1614 * files (as returned by g_get_tmp_dir()).
1616 * @tmpl should be a string in the GLib file name encoding containing
1617 * a sequence of six 'X' characters, as the parameter to g_mkstemp().
1618 * However, unlike these functions, the template should only be a
1619 * basename, no directory components are allowed. If template is
1620 * %NULL, a default template is used.
1622 * Note that in contrast to g_mkstemp() (and mkstemp()) @tmpl is not
1623 * modified, and might thus be a read-only literal string.
1625 * Upon success, and if @name_used is non-%NULL, the actual name used
1626 * is returned in @name_used. This string should be freed with g_free()
1627 * when not needed any longer. The returned name is in the GLib file
1630 * Return value: A file handle (as from open()) to the file opened for
1631 * reading and writing. The file is opened in binary mode on platforms
1632 * where there is a difference. The file handle should be closed with
1633 * close(). In case of errors, -1 is returned and @error will be set.
1636 g_file_open_tmp (const gchar
*tmpl
,
1640 gchar
*fulltemplate
;
1643 result
= g_get_tmp_name (tmpl
, &fulltemplate
,
1645 O_CREAT
| O_EXCL
| O_RDWR
| O_BINARY
,
1651 *name_used
= fulltemplate
;
1653 g_free (fulltemplate
);
1661 * @tmpl: (type filename) (allow-none): Template for directory name,
1662 * as in g_mkdtemp(), basename only, or %NULL for a default template
1663 * @error: return location for a #GError
1665 * Creates a subdirectory in the preferred directory for temporary
1666 * files (as returned by g_get_tmp_dir()).
1668 * @tmpl should be a string in the GLib file name encoding containing
1669 * a sequence of six 'X' characters, as the parameter to g_mkstemp().
1670 * However, unlike these functions, the template should only be a
1671 * basename, no directory components are allowed. If template is
1672 * %NULL, a default template is used.
1674 * Note that in contrast to g_mkdtemp() (and mkdtemp()) @tmpl is not
1675 * modified, and might thus be a read-only literal string.
1677 * Return value: (type filename): The actual name used. This string
1678 * should be freed with g_free() when not needed any longer and is
1679 * is in the GLib file name encoding. In case of errors, %NULL is
1680 * returned and @error will be set.
1685 g_dir_make_tmp (const gchar
*tmpl
,
1688 gchar
*fulltemplate
;
1690 if (g_get_tmp_name (tmpl
, &fulltemplate
, wrap_g_mkdir
, 0, 0700, error
) == -1)
1693 return fulltemplate
;
1697 g_build_path_va (const gchar
*separator
,
1698 const gchar
*first_element
,
1703 gint separator_len
= strlen (separator
);
1704 gboolean is_first
= TRUE
;
1705 gboolean have_leading
= FALSE
;
1706 const gchar
*single_element
= NULL
;
1707 const gchar
*next_element
;
1708 const gchar
*last_trailing
= NULL
;
1711 result
= g_string_new (NULL
);
1714 next_element
= str_array
[i
++];
1716 next_element
= first_element
;
1720 const gchar
*element
;
1726 element
= next_element
;
1728 next_element
= str_array
[i
++];
1730 next_element
= va_arg (*args
, gchar
*);
1735 /* Ignore empty elements */
1743 while (strncmp (start
, separator
, separator_len
) == 0)
1744 start
+= separator_len
;
1747 end
= start
+ strlen (start
);
1751 while (end
>= start
+ separator_len
&&
1752 strncmp (end
- separator_len
, separator
, separator_len
) == 0)
1753 end
-= separator_len
;
1755 last_trailing
= end
;
1756 while (last_trailing
>= element
+ separator_len
&&
1757 strncmp (last_trailing
- separator_len
, separator
, separator_len
) == 0)
1758 last_trailing
-= separator_len
;
1762 /* If the leading and trailing separator strings are in the
1763 * same element and overlap, the result is exactly that element
1765 if (last_trailing
<= start
)
1766 single_element
= element
;
1768 g_string_append_len (result
, element
, start
- element
);
1769 have_leading
= TRUE
;
1772 single_element
= NULL
;
1779 g_string_append (result
, separator
);
1781 g_string_append_len (result
, start
, end
- start
);
1787 g_string_free (result
, TRUE
);
1788 return g_strdup (single_element
);
1793 g_string_append (result
, last_trailing
);
1795 return g_string_free (result
, FALSE
);
1801 * @separator: a string used to separator the elements of the path.
1802 * @args: (array zero-terminated=1): %NULL-terminated array of strings containing the path elements.
1804 * Behaves exactly like g_build_path(), but takes the path elements
1805 * as a string array, instead of varargs. This function is mainly
1806 * meant for language bindings.
1808 * Return value: a newly-allocated string that must be freed with g_free().
1813 g_build_pathv (const gchar
*separator
,
1819 return g_build_path_va (separator
, NULL
, NULL
, args
);
1825 * @separator: a string used to separator the elements of the path.
1826 * @first_element: the first element in the path
1827 * @...: remaining elements in path, terminated by %NULL
1829 * Creates a path from a series of elements using @separator as the
1830 * separator between elements. At the boundary between two elements,
1831 * any trailing occurrences of separator in the first element, or
1832 * leading occurrences of separator in the second element are removed
1833 * and exactly one copy of the separator is inserted.
1835 * Empty elements are ignored.
1837 * The number of leading copies of the separator on the result is
1838 * the same as the number of leading copies of the separator on
1839 * the first non-empty element.
1841 * The number of trailing copies of the separator on the result is
1842 * the same as the number of trailing copies of the separator on
1843 * the last non-empty element. (Determination of the number of
1844 * trailing copies is done without stripping leading copies, so
1845 * if the separator is <literal>ABA</literal>, <literal>ABABA</literal>
1846 * has 1 trailing copy.)
1848 * However, if there is only a single non-empty element, and there
1849 * are no characters in that element not part of the leading or
1850 * trailing separators, then the result is exactly the original value
1853 * Other than for determination of the number of leading and trailing
1854 * copies of the separator, elements consisting only of copies
1855 * of the separator are ignored.
1857 * Return value: a newly-allocated string that must be freed with g_free().
1860 g_build_path (const gchar
*separator
,
1861 const gchar
*first_element
,
1867 g_return_val_if_fail (separator
!= NULL
, NULL
);
1869 va_start (args
, first_element
);
1870 str
= g_build_path_va (separator
, first_element
, &args
, NULL
);
1879 g_build_pathname_va (const gchar
*first_element
,
1883 /* Code copied from g_build_pathv(), and modified to use two
1884 * alternative single-character separators.
1887 gboolean is_first
= TRUE
;
1888 gboolean have_leading
= FALSE
;
1889 const gchar
*single_element
= NULL
;
1890 const gchar
*next_element
;
1891 const gchar
*last_trailing
= NULL
;
1892 gchar current_separator
= '\\';
1895 result
= g_string_new (NULL
);
1898 next_element
= str_array
[i
++];
1900 next_element
= first_element
;
1904 const gchar
*element
;
1910 element
= next_element
;
1912 next_element
= str_array
[i
++];
1914 next_element
= va_arg (*args
, gchar
*);
1919 /* Ignore empty elements */
1928 (*start
== '\\' || *start
== '/'))
1930 current_separator
= *start
;
1935 end
= start
+ strlen (start
);
1939 while (end
>= start
+ 1 &&
1940 (end
[-1] == '\\' || end
[-1] == '/'))
1942 current_separator
= end
[-1];
1946 last_trailing
= end
;
1947 while (last_trailing
>= element
+ 1 &&
1948 (last_trailing
[-1] == '\\' || last_trailing
[-1] == '/'))
1953 /* If the leading and trailing separator strings are in the
1954 * same element and overlap, the result is exactly that element
1956 if (last_trailing
<= start
)
1957 single_element
= element
;
1959 g_string_append_len (result
, element
, start
- element
);
1960 have_leading
= TRUE
;
1963 single_element
= NULL
;
1970 g_string_append_len (result
, ¤t_separator
, 1);
1972 g_string_append_len (result
, start
, end
- start
);
1978 g_string_free (result
, TRUE
);
1979 return g_strdup (single_element
);
1984 g_string_append (result
, last_trailing
);
1986 return g_string_free (result
, FALSE
);
1993 * g_build_filenamev:
1994 * @args: (array zero-terminated=1): %NULL-terminated array of strings containing the path elements.
1996 * Behaves exactly like g_build_filename(), but takes the path elements
1997 * as a string array, instead of varargs. This function is mainly
1998 * meant for language bindings.
2000 * Return value: a newly-allocated string that must be freed with g_free().
2005 g_build_filenamev (gchar
**args
)
2010 str
= g_build_path_va (G_DIR_SEPARATOR_S
, NULL
, NULL
, args
);
2012 str
= g_build_pathname_va (NULL
, NULL
, args
);
2020 * @first_element: the first element in the path
2021 * @...: remaining elements in path, terminated by %NULL
2023 * Creates a filename from a series of elements using the correct
2024 * separator for filenames.
2026 * On Unix, this function behaves identically to <literal>g_build_path
2027 * (G_DIR_SEPARATOR_S, first_element, ....)</literal>.
2029 * On Windows, it takes into account that either the backslash
2030 * (<literal>\</literal> or slash (<literal>/</literal>) can be used
2031 * as separator in filenames, but otherwise behaves as on Unix. When
2032 * file pathname separators need to be inserted, the one that last
2033 * previously occurred in the parameters (reading from left to right)
2036 * No attempt is made to force the resulting filename to be an absolute
2037 * path. If the first element is a relative path, the result will
2038 * be a relative path.
2040 * Return value: a newly-allocated string that must be freed with g_free().
2043 g_build_filename (const gchar
*first_element
,
2049 va_start (args
, first_element
);
2051 str
= g_build_path_va (G_DIR_SEPARATOR_S
, first_element
, &args
, NULL
);
2053 str
= g_build_pathname_va (first_element
, &args
, NULL
);
2062 * @filename: the symbolic link
2063 * @error: return location for a #GError
2065 * Reads the contents of the symbolic link @filename like the POSIX
2066 * readlink() function. The returned string is in the encoding used
2067 * for filenames. Use g_filename_to_utf8() to convert it to UTF-8.
2069 * Returns: A newly-allocated string with the contents of the symbolic link,
2070 * or %NULL if an error occurred.
2075 g_file_read_link (const gchar
*filename
,
2078 #ifdef HAVE_READLINK
2084 buffer
= g_malloc (size
);
2088 read_size
= readlink (filename
, buffer
, size
);
2089 if (read_size
< 0) {
2090 int save_errno
= errno
;
2091 gchar
*display_filename
= g_filename_display_name (filename
);
2096 g_file_error_from_errno (save_errno
),
2097 _("Failed to read the symbolic link '%s': %s"),
2099 g_strerror (save_errno
));
2100 g_free (display_filename
);
2105 if (read_size
< size
)
2107 buffer
[read_size
] = 0;
2112 buffer
= g_realloc (buffer
, size
);
2115 g_set_error_literal (error
,
2118 _("Symbolic links not supported"));
2125 * g_path_is_absolute:
2126 * @file_name: a file name
2128 * Returns %TRUE if the given @file_name is an absolute file name.
2129 * Note that this is a somewhat vague concept on Windows.
2131 * On POSIX systems, an absolute file name is well-defined. It always
2132 * starts from the single root directory. For example "/usr/local".
2134 * On Windows, the concepts of current drive and drive-specific
2135 * current directory introduce vagueness. This function interprets as
2136 * an absolute file name one that either begins with a directory
2137 * separator such as "\Users\tml" or begins with the root on a drive,
2138 * for example "C:\Windows". The first case also includes UNC paths
2139 * such as "\\myserver\docs\foo". In all cases, either slashes or
2140 * backslashes are accepted.
2142 * Note that a file name relative to the current drive root does not
2143 * truly specify a file uniquely over time and across processes, as
2144 * the current drive is a per-process value and can be changed.
2146 * File names relative the current directory on some specific drive,
2147 * such as "D:foo/bar", are not interpreted as absolute by this
2148 * function, but they obviously are not relative to the normal current
2149 * directory as returned by getcwd() or g_get_current_dir()
2150 * either. Such paths should be avoided, or need to be handled using
2151 * Windows-specific code.
2153 * Returns: %TRUE if @file_name is absolute
2156 g_path_is_absolute (const gchar
*file_name
)
2158 g_return_val_if_fail (file_name
!= NULL
, FALSE
);
2160 if (G_IS_DIR_SEPARATOR (file_name
[0]))
2164 /* Recognize drive letter on native Windows */
2165 if (g_ascii_isalpha (file_name
[0]) &&
2166 file_name
[1] == ':' && G_IS_DIR_SEPARATOR (file_name
[2]))
2175 * @file_name: a file name
2177 * Returns a pointer into @file_name after the root component,
2178 * i.e. after the "/" in UNIX or "C:\" under Windows. If @file_name
2179 * is not an absolute path it returns %NULL.
2181 * Returns: a pointer into @file_name after the root component
2184 g_path_skip_root (const gchar
*file_name
)
2186 g_return_val_if_fail (file_name
!= NULL
, NULL
);
2188 #ifdef G_PLATFORM_WIN32
2189 /* Skip \\server\share or //server/share */
2190 if (G_IS_DIR_SEPARATOR (file_name
[0]) &&
2191 G_IS_DIR_SEPARATOR (file_name
[1]) &&
2193 !G_IS_DIR_SEPARATOR (file_name
[2]))
2196 p
= strchr (file_name
+ 2, G_DIR_SEPARATOR
);
2202 q
= strchr (file_name
+ 2, '/');
2203 if (p
== NULL
|| (q
!= NULL
&& q
< p
))
2208 if (p
&& p
> file_name
+ 2 && p
[1])
2212 while (file_name
[0] && !G_IS_DIR_SEPARATOR (file_name
[0]))
2215 /* Possibly skip a backslash after the share name */
2216 if (G_IS_DIR_SEPARATOR (file_name
[0]))
2219 return (gchar
*)file_name
;
2224 /* Skip initial slashes */
2225 if (G_IS_DIR_SEPARATOR (file_name
[0]))
2227 while (G_IS_DIR_SEPARATOR (file_name
[0]))
2229 return (gchar
*)file_name
;
2234 if (g_ascii_isalpha (file_name
[0]) &&
2235 file_name
[1] == ':' &&
2236 G_IS_DIR_SEPARATOR (file_name
[2]))
2237 return (gchar
*)file_name
+ 3;
2245 * @file_name: the name of the file
2247 * Gets the name of the file without any leading directory
2248 * components. It returns a pointer into the given file name
2251 * Return value: the name of the file without any leading
2252 * directory components
2254 * Deprecated:2.2: Use g_path_get_basename() instead, but notice
2255 * that g_path_get_basename() allocates new memory for the
2256 * returned string, unlike this function which returns a pointer
2257 * into the argument.
2260 g_basename (const gchar
*file_name
)
2264 g_return_val_if_fail (file_name
!= NULL
, NULL
);
2266 base
= strrchr (file_name
, G_DIR_SEPARATOR
);
2271 q
= strrchr (file_name
, '/');
2272 if (base
== NULL
|| (q
!= NULL
&& q
> base
))
2281 if (g_ascii_isalpha (file_name
[0]) && file_name
[1] == ':')
2282 return (gchar
*) file_name
+ 2;
2285 return (gchar
*) file_name
;
2289 * g_path_get_basename:
2290 * @file_name: the name of the file
2292 * Gets the last component of the filename.
2294 * If @file_name ends with a directory separator it gets the component
2295 * before the last slash. If @file_name consists only of directory
2296 * separators (and on Windows, possibly a drive letter), a single
2297 * separator is returned. If @file_name is empty, it gets ".".
2299 * Return value: a newly allocated string containing the last
2300 * component of the filename
2303 g_path_get_basename (const gchar
*file_name
)
2306 gssize last_nonslash
;
2310 g_return_val_if_fail (file_name
!= NULL
, NULL
);
2312 if (file_name
[0] == '\0')
2313 return g_strdup (".");
2315 last_nonslash
= strlen (file_name
) - 1;
2317 while (last_nonslash
>= 0 && G_IS_DIR_SEPARATOR (file_name
[last_nonslash
]))
2320 if (last_nonslash
== -1)
2321 /* string only containing slashes */
2322 return g_strdup (G_DIR_SEPARATOR_S
);
2325 if (last_nonslash
== 1 &&
2326 g_ascii_isalpha (file_name
[0]) &&
2327 file_name
[1] == ':')
2328 /* string only containing slashes and a drive */
2329 return g_strdup (G_DIR_SEPARATOR_S
);
2331 base
= last_nonslash
;
2333 while (base
>=0 && !G_IS_DIR_SEPARATOR (file_name
[base
]))
2338 g_ascii_isalpha (file_name
[0]) &&
2339 file_name
[1] == ':')
2341 #endif /* G_OS_WIN32 */
2343 len
= last_nonslash
- base
;
2344 retval
= g_malloc (len
+ 1);
2345 memcpy (retval
, file_name
+ base
+ 1, len
);
2346 retval
[len
] = '\0';
2353 * @file_name: the name of the file
2355 * Gets the directory components of a file name.
2357 * If the file name has no directory components "." is returned.
2358 * The returned string should be freed when no longer needed.
2360 * Returns: the directory components of the file
2362 * Deprecated: use g_path_get_dirname() instead
2366 * g_path_get_dirname:
2367 * @file_name: the name of the file
2369 * Gets the directory components of a file name.
2371 * If the file name has no directory components "." is returned.
2372 * The returned string should be freed when no longer needed.
2374 * Returns: the directory components of the file
2377 g_path_get_dirname (const gchar
*file_name
)
2382 g_return_val_if_fail (file_name
!= NULL
, NULL
);
2384 base
= strrchr (file_name
, G_DIR_SEPARATOR
);
2389 q
= strrchr (file_name
, '/');
2390 if (base
== NULL
|| (q
!= NULL
&& q
> base
))
2398 if (g_ascii_isalpha (file_name
[0]) && file_name
[1] == ':')
2400 gchar drive_colon_dot
[4];
2402 drive_colon_dot
[0] = file_name
[0];
2403 drive_colon_dot
[1] = ':';
2404 drive_colon_dot
[2] = '.';
2405 drive_colon_dot
[3] = '\0';
2407 return g_strdup (drive_colon_dot
);
2410 return g_strdup (".");
2413 while (base
> file_name
&& G_IS_DIR_SEPARATOR (*base
))
2417 /* base points to the char before the last slash.
2419 * In case file_name is the root of a drive (X:\) or a child of the
2420 * root of a drive (X:\foo), include the slash.
2422 * In case file_name is the root share of an UNC path
2423 * (\\server\share), add a slash, returning \\server\share\ .
2425 * In case file_name is a direct child of a share in an UNC path
2426 * (\\server\share\foo), include the slash after the share name,
2427 * returning \\server\share\ .
2429 if (base
== file_name
+ 1 &&
2430 g_ascii_isalpha (file_name
[0]) &&
2431 file_name
[1] == ':')
2433 else if (G_IS_DIR_SEPARATOR (file_name
[0]) &&
2434 G_IS_DIR_SEPARATOR (file_name
[1]) &&
2436 !G_IS_DIR_SEPARATOR (file_name
[2]) &&
2437 base
>= file_name
+ 2)
2439 const gchar
*p
= file_name
+ 2;
2440 while (*p
&& !G_IS_DIR_SEPARATOR (*p
))
2444 len
= (guint
) strlen (file_name
) + 1;
2445 base
= g_new (gchar
, len
+ 1);
2446 strcpy (base
, file_name
);
2447 base
[len
-1] = G_DIR_SEPARATOR
;
2451 if (G_IS_DIR_SEPARATOR (*p
))
2454 while (*p
&& !G_IS_DIR_SEPARATOR (*p
))
2462 len
= (guint
) 1 + base
- file_name
;
2463 base
= g_new (gchar
, len
+ 1);
2464 g_memmove (base
, file_name
, len
);
2470 #if defined(MAXPATHLEN)
2471 #define G_PATH_LENGTH MAXPATHLEN
2472 #elif defined(PATH_MAX)
2473 #define G_PATH_LENGTH PATH_MAX
2474 #elif defined(_PC_PATH_MAX)
2475 #define G_PATH_LENGTH sysconf(_PC_PATH_MAX)
2477 #define G_PATH_LENGTH 2048
2481 * g_get_current_dir:
2483 * Gets the current directory.
2485 * The returned string should be freed when no longer needed.
2486 * The encoding of the returned string is system defined.
2487 * On Windows, it is always UTF-8.
2489 * Returns: the current directory
2492 g_get_current_dir (void)
2497 wchar_t dummy
[2], *wdir
;
2500 len
= GetCurrentDirectoryW (2, dummy
);
2501 wdir
= g_new (wchar_t, len
);
2503 if (GetCurrentDirectoryW (len
, wdir
) == len
- 1)
2504 dir
= g_utf16_to_utf8 (wdir
, -1, NULL
, NULL
, NULL
);
2509 dir
= g_strdup ("\\");
2515 gchar
*buffer
= NULL
;
2517 static gulong max_len
= 0;
2520 max_len
= (G_PATH_LENGTH
== -1) ? 2048 : G_PATH_LENGTH
;
2522 /* We don't use getcwd(3) on SUNOS, because, it does a popen("pwd")
2523 * and, if that wasn't bad enough, hangs in doing so.
2525 #if (defined (sun) && !defined (__SVR4)) || !defined(HAVE_GETCWD)
2526 buffer
= g_new (gchar
, max_len
+ 1);
2528 dir
= getwd (buffer
);
2530 while (max_len
< G_MAXULONG
/ 2)
2533 buffer
= g_new (gchar
, max_len
+ 1);
2535 dir
= getcwd (buffer
, max_len
);
2537 if (dir
|| errno
!= ERANGE
)
2542 #endif /* !sun || !HAVE_GETCWD */
2544 if (!dir
|| !*buffer
)
2546 /* hm, should we g_error() out here?
2547 * this can happen if e.g. "./" has mode \0000
2549 buffer
[0] = G_DIR_SEPARATOR
;
2553 dir
= g_strdup (buffer
);
2558 #endif /* !G_OS_WIN32 */
2562 /* NOTE : Keep this part last to ensure nothing in this file uses thn
2563 * below binary compatibility versions.
2565 #if defined (G_OS_WIN32) && !defined (_WIN64)
2567 /* Binary compatibility versions. Will be called by code compiled
2568 * against quite old (pre-2.8, I think) headers only, not from more
2569 * recently compiled code.
2575 g_file_test (const gchar
*filename
,
2578 gchar
*utf8_filename
= g_locale_to_utf8 (filename
, -1, NULL
, NULL
, NULL
);
2581 if (utf8_filename
== NULL
)
2584 retval
= g_file_test_utf8 (utf8_filename
, test
);
2586 g_free (utf8_filename
);
2591 #undef g_file_get_contents
2594 g_file_get_contents (const gchar
*filename
,
2599 gchar
*utf8_filename
= g_locale_to_utf8 (filename
, -1, NULL
, NULL
, error
);
2602 if (utf8_filename
== NULL
)
2605 retval
= g_file_get_contents_utf8 (utf8_filename
, contents
, length
, error
);
2607 g_free (utf8_filename
);
2615 wrap_libc_open (const gchar
*filename
,
2619 return open (filename
, flags
, mode
);
2623 g_mkstemp (gchar
*tmpl
)
2625 /* This is the backward compatibility system codepage version,
2626 * thus use normal open().
2628 return get_tmp_file (tmpl
, wrap_libc_open
,
2629 O_RDWR
| O_CREAT
| O_EXCL
, 0600);
2632 #undef g_file_open_tmp
2635 g_file_open_tmp (const gchar
*tmpl
,
2639 gchar
*utf8_tmpl
= g_locale_to_utf8 (tmpl
, -1, NULL
, NULL
, error
);
2640 gchar
*utf8_name_used
;
2643 if (utf8_tmpl
== NULL
)
2646 retval
= g_file_open_tmp_utf8 (utf8_tmpl
, &utf8_name_used
, error
);
2652 *name_used
= g_locale_from_utf8 (utf8_name_used
, -1, NULL
, NULL
, NULL
);
2654 g_free (utf8_name_used
);
2659 #undef g_get_current_dir
2662 g_get_current_dir (void)
2664 gchar
*utf8_dir
= g_get_current_dir_utf8 ();
2665 gchar
*dir
= g_locale_from_utf8 (utf8_dir
, -1, NULL
, NULL
, NULL
);