2 Copyright (C) 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2007, 2009 Free Software Foundation, Inc.
4 Written 1994, 1995, 1996 by:
5 Miguel de Icaza, Janne Kukonlehto, Dugan Porter,
6 Jakub Jelinek, Mauricio Plaza.
8 The file_date routine is mostly from GNU's fileutils package,
9 written by Richard Stallman and David MacKenzie.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
26 * \brief Source: various utilities
39 #include <sys/types.h>
43 #include "lib/global.h"
44 #include "lib/tty/win.h" /* xterm_flag */
45 #include "lib/mcconfig.h"
46 #include "lib/fileloc.h"
47 #include "lib/vfs/vfs.h"
48 #include "lib/strutil.h"
51 /*** global variables ****************************************************************************/
53 /*** file scope macro definitions ****************************************************************/
55 #define ismode(n,m) ((n & m) == m)
57 /* Number of attempts to create a temporary file */
62 #define TMP_SUFFIX ".tmp"
64 #define ASCII_A (0x40 + 1)
65 #define ASCII_Z (0x40 + 26)
66 #define ASCII_a (0x60 + 1)
67 #define ASCII_z (0x60 + 26)
69 /*** file scope type declarations ****************************************************************/
71 /*** file scope variables ************************************************************************/
73 /*** file scope functions ************************************************************************/
74 /* --------------------------------------------------------------------------------------------- */
77 is_7bit_printable (unsigned char c
)
79 return (c
> 31 && c
< 127);
82 /* --------------------------------------------------------------------------------------------- */
85 is_iso_printable (unsigned char c
)
87 return ((c
> 31 && c
< 127) || c
>= 160);
90 /* --------------------------------------------------------------------------------------------- */
93 is_8bit_printable (unsigned char c
)
95 /* "Full 8 bits output" doesn't work on xterm */
97 return is_iso_printable (c
);
99 return (c
> 31 && c
!= 127 && c
!= 155);
102 /* --------------------------------------------------------------------------------------------- */
105 resolve_symlinks (const char *path
)
107 char *buf
, *buf2
, *q
, *r
, c
;
112 if (*path
!= PATH_SEP
)
114 r
= buf
= g_malloc (MC_MAXPATHLEN
);
115 buf2
= g_malloc (MC_MAXPATHLEN
);
121 q
= strchr (p
+ 1, PATH_SEP
);
124 q
= strchr (p
+ 1, 0);
130 if (mc_lstat (path
, &mybuf
) < 0)
137 if (!S_ISLNK (mybuf
.st_mode
))
141 len
= mc_readlink (path
, buf2
, MC_MAXPATHLEN
- 1);
150 if (*buf2
== PATH_SEP
)
155 canonicalize_pathname (buf
);
157 if (!*r
|| *(r
- 1) != PATH_SEP
)
168 strcpy (buf
, PATH_SEP_STR
);
169 else if (*(r
- 1) == PATH_SEP
&& r
!= buf
+ 1)
175 /* --------------------------------------------------------------------------------------------- */
178 mc_util_write_backup_content (const char *from_file_name
, const char *to_file_name
)
183 gboolean ret1
= TRUE
;
185 if (!g_file_get_contents (from_file_name
, &contents
, &length
, NULL
))
188 backup_fd
= fopen (to_file_name
, "w");
189 if (backup_fd
== NULL
)
195 if (fwrite ((const void *) contents
, 1, length
, backup_fd
) != length
)
199 ret2
= fflush (backup_fd
);
200 ret2
= fclose (backup_fd
);
206 /* --------------------------------------------------------------------------------------------- */
207 /*** public functions ****************************************************************************/
208 /* --------------------------------------------------------------------------------------------- */
216 /* "Display bits" is ignored, since the user controls the output
217 by setting the output codepage */
218 return is_8bit_printable (c
);
220 if (!mc_global
.eight_bit_clean
)
221 return is_7bit_printable (c
);
223 if (mc_global
.full_eight_bits
)
225 return is_8bit_printable (c
);
228 return is_iso_printable (c
);
229 #endif /* !HAVE_CHARSET */
232 /* --------------------------------------------------------------------------------------------- */
234 * Quote the filename for the purpose of inserting it into the command
235 * line. If quote_percent is 1, replace "%" with "%%" - the percent is
236 * processed by the mc command line.
239 name_quote (const char *s
, int quote_percent
)
243 d
= ret
= g_malloc (strlen (s
) * 2 + 2 + 1);
295 /* --------------------------------------------------------------------------------------------- */
298 fake_name_quote (const char *s
, int quote_percent
)
300 (void) quote_percent
;
304 /* --------------------------------------------------------------------------------------------- */
306 * path_trunc() is the same as str_trunc() but
307 * it deletes possible password from path for security
312 path_trunc (const char *path
, size_t trunc_len
)
314 char *secure_path
= strip_password (g_strdup (path
), 1);
316 const char *ret
= str_trunc (secure_path
, trunc_len
);
317 g_free (secure_path
);
322 /* --------------------------------------------------------------------------------------------- */
325 size_trunc (uintmax_t size
, gboolean use_si
)
327 static char x
[BUF_TINY
];
328 uintmax_t divisor
= 1;
329 const char *xtra
= "";
331 if (size
> 999999999UL)
333 divisor
= use_si
? 1000 : 1024;
334 xtra
= use_si
? "k" : "K";
335 if (size
/ divisor
> 999999999UL)
337 divisor
= use_si
? (1000 * 1000) : (1024 * 1024);
338 xtra
= use_si
? "m" : "M";
341 g_snprintf (x
, sizeof (x
), "%.0f%s", 1.0 * size
/ divisor
, xtra
);
345 /* --------------------------------------------------------------------------------------------- */
348 size_trunc_sep (uintmax_t size
, gboolean use_si
)
355 p
= y
= size_trunc (size
, use_si
);
357 d
= x
+ sizeof (x
) - 1;
359 while (p
>= y
&& isalpha ((unsigned char) *p
))
361 for (count
= 0; p
>= y
; count
++)
376 /* --------------------------------------------------------------------------------------------- */
378 * Print file SIZE to BUFFER, but don't exceed LEN characters,
379 * not including trailing 0. BUFFER should be at least LEN+1 long.
380 * This function is called for every file on panels, so avoid
381 * floating point by any means.
383 * Units: size units (filesystem sizes are 1K blocks)
384 * 0=bytes, 1=Kbytes, 2=Mbytes, etc.
388 size_trunc_len (char *buffer
, unsigned int len
, uintmax_t size
, int units
, gboolean use_si
)
390 /* Avoid taking power for every file. */
391 static const uintmax_t power10
[] = {
392 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000
394 static const char *const suffix
[] = { "", "K", "M", "G", "T", "P", "E", "Z", "Y", NULL
};
395 static const char *const suffix_lc
[] = { "", "k", "m", "g", "t", "p", "e", "z", "y", NULL
};
403 * recalculate from 1024 base to 1000 base if units>0
404 * We can't just multiply by 1024 - that might cause overflow
405 * if off_t type is too small
408 for (j
= 0; j
< units
; j
++)
410 size_remain
= ((size
% 125) * 1024) / 1000; /* size mod 125, recalculated */
411 size
= size
/ 125; /* 128/125 = 1024/1000 */
412 size
= size
* 128; /* This will convert size from multiple of 1024 to multiple of 1000 */
413 size
+= size_remain
; /* Re-add remainder lost by division/multiplication */
416 for (j
= units
; suffix
[j
] != NULL
; j
++)
422 /* Empty files will print "0" even with minimal width. */
423 g_snprintf (buffer
, len
+ 1, "0");
427 /* Use "~K" or just "K" if len is 1. Use "B" for bytes. */
428 g_snprintf (buffer
, len
+ 1, (len
> 1) ? "~%s" : "%s",
429 (j
> 1) ? (use_si
? suffix_lc
[j
- 1] : suffix
[j
- 1]) : "B");
433 if (size
< power10
[len
- (j
> 0)])
435 g_snprintf (buffer
, len
+ 1, "%" PRIuMAX
"%s", size
, use_si
? suffix_lc
[j
] : suffix
[j
]);
439 /* Powers of 1000 or 1024, with rounding. */
441 size
= (size
+ 500) / 1000;
443 size
= (size
+ 512) >> 10;
447 /* --------------------------------------------------------------------------------------------- */
450 string_perm (mode_t mode_bits
)
452 static char mode
[11];
454 strcpy (mode
, "----------");
455 if (S_ISDIR (mode_bits
))
457 if (S_ISCHR (mode_bits
))
459 if (S_ISBLK (mode_bits
))
461 if (S_ISLNK (mode_bits
))
463 if (S_ISFIFO (mode_bits
))
465 if (S_ISNAM (mode_bits
))
467 if (S_ISSOCK (mode_bits
))
469 if (S_ISDOOR (mode_bits
))
471 if (ismode (mode_bits
, S_IXOTH
))
473 if (ismode (mode_bits
, S_IWOTH
))
475 if (ismode (mode_bits
, S_IROTH
))
477 if (ismode (mode_bits
, S_IXGRP
))
479 if (ismode (mode_bits
, S_IWGRP
))
481 if (ismode (mode_bits
, S_IRGRP
))
483 if (ismode (mode_bits
, S_IXUSR
))
485 if (ismode (mode_bits
, S_IWUSR
))
487 if (ismode (mode_bits
, S_IRUSR
))
490 if (ismode (mode_bits
, S_ISUID
))
491 mode
[3] = (mode
[3] == 'x') ? 's' : 'S';
494 if (ismode (mode_bits
, S_ISGID
))
495 mode
[6] = (mode
[6] == 'x') ? 's' : 'S';
498 if (ismode (mode_bits
, S_ISVTX
))
499 mode
[9] = (mode
[9] == 'x') ? 't' : 'T';
504 /* --------------------------------------------------------------------------------------------- */
506 * p: string which might contain an url with a password (this parameter is
507 * modified in place).
508 * has_prefix = 0: The first parameter is an url without a prefix
509 * (user[:pass]@]machine[:port][remote-dir). Delete
511 * has_prefix = 1: Search p for known url prefixes. If found delete
512 * the password from the url.
513 * Caveat: only the first url is found
517 strip_password (char *p
, int has_prefix
)
536 char *at
, *inner_colon
, *dir
;
540 for (i
= 0; i
< sizeof (prefixes
) / sizeof (prefixes
[0]); i
++)
546 q
= strstr (p
, prefixes
[i
].name
);
550 p
= q
+ prefixes
[i
].len
;
553 dir
= strchr (p
, PATH_SEP
);
557 /* search for any possible user */
558 at
= strrchr (p
, '@');
563 /* We have a username */
566 inner_colon
= memchr (p
, ':', at
- p
);
568 memmove (inner_colon
, at
, strlen (at
) + 1);
575 /* --------------------------------------------------------------------------------------------- */
578 strip_home_and_password (const char *dir
)
581 static char newdir
[MC_MAXPATHLEN
];
583 len
= strlen (mc_config_get_home_dir ());
584 if (mc_config_get_home_dir () != NULL
&& strncmp (dir
, mc_config_get_home_dir (), len
) == 0 &&
585 (dir
[len
] == PATH_SEP
|| dir
[len
] == '\0'))
588 g_strlcpy (&newdir
[1], &dir
[len
], sizeof (newdir
) - 1);
592 /* We do not strip homes in /#ftp tree, I do not like ~'s there
594 g_strlcpy (newdir
, dir
, sizeof (newdir
));
595 strip_password (newdir
, 1);
599 /* --------------------------------------------------------------------------------------------- */
602 extension (const char *filename
)
604 const char *d
= strrchr (filename
, '.');
605 return (d
!= NULL
) ? d
+ 1 : "";
608 /* --------------------------------------------------------------------------------------------- */
611 load_mc_home_file (const char *from
, const char *filename
, char **allocated_filename
)
613 char *hintfile_base
, *hintfile
;
617 hintfile_base
= g_build_filename (from
, filename
, (char *) NULL
);
618 lang
= guess_message_value ();
620 hintfile
= g_strconcat (hintfile_base
, ".", lang
, (char *) NULL
);
621 if (!g_file_get_contents (hintfile
, &data
, NULL
, NULL
))
623 /* Fall back to the two-letter language code */
624 if (lang
[0] != '\0' && lang
[1] != '\0')
627 hintfile
= g_strconcat (hintfile_base
, ".", lang
, (char *) NULL
);
628 if (!g_file_get_contents (hintfile
, &data
, NULL
, NULL
))
631 hintfile
= hintfile_base
;
632 g_file_get_contents (hintfile_base
, &data
, NULL
, NULL
);
638 if (hintfile
!= hintfile_base
)
639 g_free (hintfile_base
);
641 if (allocated_filename
!= NULL
)
642 *allocated_filename
= hintfile
;
649 /* --------------------------------------------------------------------------------------------- */
652 extract_line (const char *s
, const char *top
)
654 static char tmp_line
[BUF_MEDIUM
];
657 while (*s
&& *s
!= '\n' && (size_t) (t
- tmp_line
) < sizeof (tmp_line
) - 1 && s
< top
)
663 /* --------------------------------------------------------------------------------------------- */
665 * The basename routine
669 x_basename (const char *s
)
671 const char *url_delim
, *path_sep
;
673 url_delim
= g_strrstr (s
, VFS_PATH_URL_DELIMITER
);
674 path_sep
= strrchr (s
, PATH_SEP
);
676 if (url_delim
== NULL
677 || url_delim
< path_sep
- strlen (VFS_PATH_URL_DELIMITER
)
678 || url_delim
- s
+ strlen (VFS_PATH_URL_DELIMITER
) < strlen (s
))
680 /* avoid trailing PATH_SEP, if present */
681 if (s
[strlen (s
) - 1] == PATH_SEP
)
683 while (--path_sep
> s
&& *path_sep
!= PATH_SEP
);
684 return (path_sep
!= s
) ? path_sep
+ 1 : s
;
687 return (path_sep
!= NULL
) ? path_sep
+ 1 : s
;
690 while (--url_delim
> s
&& *url_delim
!= PATH_SEP
);
691 while (--url_delim
> s
&& *url_delim
!= PATH_SEP
);
693 return (url_delim
== s
) ? s
: url_delim
+ 1;
696 /* --------------------------------------------------------------------------------------------- */
699 unix_error_string (int error_num
)
701 static char buffer
[BUF_LARGE
];
702 gchar
*strerror_currentlocale
;
704 strerror_currentlocale
= g_locale_from_utf8 (g_strerror (error_num
), -1, NULL
, NULL
, NULL
);
705 g_snprintf (buffer
, sizeof (buffer
), "%s (%d)", strerror_currentlocale
, error_num
);
706 g_free (strerror_currentlocale
);
711 /* --------------------------------------------------------------------------------------------- */
714 skip_separators (const char *s
)
718 for (; *su
; str_cnext_char (&su
))
719 if (*su
!= ' ' && *su
!= '\t' && *su
!= ',')
725 /* --------------------------------------------------------------------------------------------- */
728 skip_numbers (const char *s
)
732 for (; *su
; str_cnext_char (&su
))
733 if (!str_isdigit (su
))
739 /* --------------------------------------------------------------------------------------------- */
741 * Remove all control sequences from the argument string. We define
742 * "control sequence", in a sort of pidgin BNF, as follows:
744 * control-seq = Esc non-'['
745 * | Esc '[' (0 or more digits or ';' or '?') (any other char)
747 * This scheme works for all the terminals described in my termcap /
748 * terminfo databases, except the Hewlett-Packard 70092 and some Wyse
749 * terminals. If I hear from a single person who uses such a terminal
750 * with MC, I'll be glad to add support for it. (Dugan)
751 * Non-printable characters are also removed.
755 strip_ctrl_codes (char *s
)
757 char *w
; /* Current position where the stripped data is written */
758 char *r
; /* Current position where the original data is read */
764 for (w
= s
, r
= s
; *r
;)
768 /* Skip the control sequence's arguments */ ;
769 /* '(' need to avoid strange 'B' letter in *Suse (if mc runs under root user) */
770 if (*(++r
) == '[' || *r
== '(')
772 /* strchr() matches trailing binary 0 */
773 while (*(++r
) && strchr ("0123456789;?", *r
));
778 * Skip xterm's OSC (Operating System Command)
779 * http://www.xfree86.org/current/ctlseqs.html
785 for (; *new_r
; ++new_r
)
795 if (*(new_r
+ 1) == '\\')
806 * Now we are at the last character of the sequence.
807 * Skip it unless it's binary 0.
814 n
= str_get_next_char (r
);
817 memmove (w
, r
, n
- r
);
826 /* --------------------------------------------------------------------------------------------- */
828 enum compression_type
829 get_compression_type (int fd
, const char *name
)
831 unsigned char magic
[16];
834 /* Read the magic signature */
835 if (mc_read (fd
, (char *) magic
, 4) != 4)
836 return COMPRESSION_NONE
;
838 /* GZIP_MAGIC and OLD_GZIP_MAGIC */
839 if (magic
[0] == 037 && (magic
[1] == 0213 || magic
[1] == 0236))
841 return COMPRESSION_GZIP
;
845 if (magic
[0] == 0120 && magic
[1] == 0113 && magic
[2] == 003 && magic
[3] == 004)
847 /* Read compression type */
848 mc_lseek (fd
, 8, SEEK_SET
);
849 if (mc_read (fd
, (char *) magic
, 2) != 2)
850 return COMPRESSION_NONE
;
852 /* Gzip can handle only deflated (8) or stored (0) files */
853 if ((magic
[0] != 8 && magic
[0] != 0) || magic
[1] != 0)
854 return COMPRESSION_NONE
;
856 /* Compatible with gzip */
857 return COMPRESSION_GZIP
;
860 /* PACK_MAGIC and LZH_MAGIC and compress magic */
861 if (magic
[0] == 037 && (magic
[1] == 036 || magic
[1] == 0240 || magic
[1] == 0235))
863 /* Compatible with gzip */
864 return COMPRESSION_GZIP
;
867 /* BZIP and BZIP2 files */
868 if ((magic
[0] == 'B') && (magic
[1] == 'Z') && (magic
[3] >= '1') && (magic
[3] <= '9'))
873 return COMPRESSION_BZIP
;
875 return COMPRESSION_BZIP2
;
879 /* Support for LZMA (only utils format with magic in header).
880 * This is the default format of LZMA utils 4.32.1 and later. */
882 if (mc_read (fd
, (char *) magic
+ 4, 2) != 2)
883 return COMPRESSION_NONE
;
885 /* LZMA utils format */
888 && magic
[2] == 'Z' && magic
[3] == 'M' && magic
[4] == 'A' && magic
[5] == 0x00)
889 return COMPRESSION_LZMA
;
891 /* XZ compression magic */
894 && magic
[2] == 0x7A && magic
[3] == 0x58 && magic
[4] == 0x5A && magic
[5] == 0x00)
895 return COMPRESSION_XZ
;
897 str_len
= strlen (name
);
898 /* HACK: we must belive to extention of LZMA file :) ... */
899 if ((str_len
> 5 && strcmp (&name
[str_len
- 5], ".lzma") == 0) ||
900 (str_len
> 4 && strcmp (&name
[str_len
- 4], ".tlz") == 0))
901 return COMPRESSION_LZMA
;
903 return COMPRESSION_NONE
;
906 /* --------------------------------------------------------------------------------------------- */
909 decompress_extension (int type
)
913 case COMPRESSION_GZIP
:
914 return "/ugz" VFS_PATH_URL_DELIMITER
;
915 case COMPRESSION_BZIP
:
916 return "/ubz" VFS_PATH_URL_DELIMITER
;
917 case COMPRESSION_BZIP2
:
918 return "/ubz2" VFS_PATH_URL_DELIMITER
;
919 case COMPRESSION_LZMA
:
920 return "/ulzma" VFS_PATH_URL_DELIMITER
;
922 return "/uxz" VFS_PATH_URL_DELIMITER
;
924 /* Should never reach this place */
925 fprintf (stderr
, "Fatal: decompress_extension called with an unknown argument\n");
929 /* --------------------------------------------------------------------------------------------- */
932 wipe_password (char *passwd
)
943 /* --------------------------------------------------------------------------------------------- */
945 * Convert "\E" -> esc character and ^x to control-x key and ^^ to ^ key
946 * @returns a newly allocated string
950 convert_controls (const char *p
)
952 char *valcopy
= g_strdup (p
);
955 /* Parse the escape special character */
956 for (q
= valcopy
; *p
;)
961 if ((*p
== 'e') || (*p
== 'E'))
976 char c
= (*p
| 0x20);
977 if (c
>= 'a' && c
<= 'z')
994 /* --------------------------------------------------------------------------------------------- */
996 * Finds out a relative path from first to second, i.e. goes as many ..
997 * as needed up in first and then goes down using second
1001 diff_two_paths (const char *first
, const char *second
)
1003 char *p
, *q
, *r
, *s
, *buf
= NULL
;
1004 int i
, j
, prevlen
= -1, currlen
;
1005 char *my_first
= NULL
, *my_second
= NULL
;
1007 my_first
= resolve_symlinks (first
);
1008 if (my_first
== NULL
)
1010 my_second
= resolve_symlinks (second
);
1011 if (my_second
== NULL
)
1016 for (j
= 0; j
< 2; j
++)
1022 r
= strchr (p
, PATH_SEP
);
1023 s
= strchr (q
, PATH_SEP
);
1043 for (i
= 0; (p
= strchr (p
+ 1, PATH_SEP
)) != NULL
; i
++);
1044 currlen
= (i
+ 1) * 3 + strlen (q
) + 1;
1047 if (currlen
< prevlen
)
1056 p
= buf
= g_malloc (currlen
);
1058 for (; i
>= 0; i
--, p
+= 3)
1067 /* --------------------------------------------------------------------------------------------- */
1069 * If filename is NULL, then we just append PATH_SEP to the dir
1073 concat_dir_and_file (const char *dir
, const char *file
)
1075 int i
= strlen (dir
);
1077 if (dir
[i
- 1] == PATH_SEP
)
1078 return g_strconcat (dir
, file
, (char *) NULL
);
1080 return g_strconcat (dir
, PATH_SEP_STR
, file
, (char *) NULL
);
1083 /* --------------------------------------------------------------------------------------------- */
1085 * Append text to GList, remove all entries with the same text
1089 list_append_unique (GList
* list
, char *text
)
1094 * Go to the last position and traverse the list backwards
1095 * starting from the second last entry to make sure that we
1096 * are not removing the current link.
1098 list
= g_list_append (list
, text
);
1099 list
= g_list_last (list
);
1100 lc_link
= g_list_previous (list
);
1102 while (lc_link
!= NULL
)
1106 newlink
= g_list_previous (lc_link
);
1107 if (strcmp ((char *) lc_link
->data
, text
) == 0)
1111 g_free (lc_link
->data
);
1112 tmp
= g_list_remove_link (list
, lc_link
);
1113 g_list_free_1 (lc_link
);
1121 /* --------------------------------------------------------------------------------------------- */
1122 /* Following code heavily borrows from libiberty, mkstemps.c */
1125 * pname (output) - pointer to the name of the temp file (needs g_free).
1126 * NULL if the function fails.
1127 * prefix - part of the filename before the random part.
1128 * Prepend $TMPDIR or /tmp if there are no path separators.
1129 * suffix - if not NULL, part of the filename after the random part.
1132 * handle of the open file or -1 if couldn't open any.
1136 mc_mkstemps (char **pname
, const char *prefix
, const char *suffix
)
1138 static const char letters
[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
1139 static unsigned long value
;
1146 if (strchr (prefix
, PATH_SEP
) == NULL
)
1148 /* Add prefix first to find the position of XXXXXX */
1149 tmpbase
= concat_dir_and_file (mc_tmpdir (), prefix
);
1153 tmpbase
= g_strdup (prefix
);
1156 tmpname
= g_strconcat (tmpbase
, "XXXXXX", suffix
, (char *) NULL
);
1158 XXXXXX
= &tmpname
[strlen (tmpbase
)];
1161 /* Get some more or less random data. */
1162 gettimeofday (&tv
, NULL
);
1163 value
+= (tv
.tv_usec
<< 16) ^ tv
.tv_sec
^ getpid ();
1165 for (count
= 0; count
< TMP_MAX
; ++count
)
1167 unsigned long v
= value
;
1170 /* Fill in the random bits. */
1171 XXXXXX
[0] = letters
[v
% 62];
1173 XXXXXX
[1] = letters
[v
% 62];
1175 XXXXXX
[2] = letters
[v
% 62];
1177 XXXXXX
[3] = letters
[v
% 62];
1179 XXXXXX
[4] = letters
[v
% 62];
1181 XXXXXX
[5] = letters
[v
% 62];
1183 fd
= open (tmpname
, O_RDWR
| O_CREAT
| O_TRUNC
| O_EXCL
, S_IRUSR
| S_IWUSR
);
1186 /* Successfully created. */
1190 /* This is a random value. It is only necessary that the next
1191 TMP_MAX values generated by adding 7777 to VALUE are different
1192 with (module 2^32). */
1196 /* Unsuccessful. Free the filename. */
1203 /* --------------------------------------------------------------------------------------------- */
1205 * Read and restore position for the given filename.
1206 * If there is no stored data, return line 1 and col 0.
1210 load_file_position (const char *filename
, long *line
, long *column
, off_t
* offset
,
1211 GArray
** bookmarks
)
1215 char buf
[MC_MAXPATHLEN
+ 100];
1216 const size_t len
= strlen (filename
);
1223 /* open file with positions */
1224 fn
= g_build_filename (mc_config_get_cache_path (), MC_FILEPOS_FILE
, NULL
);
1225 f
= fopen (fn
, "r");
1230 /* prepare array for serialized bookmarks */
1231 *bookmarks
= g_array_sized_new (FALSE
, FALSE
, sizeof (size_t), MAX_SAVED_BOOKMARKS
);
1233 while (fgets (buf
, sizeof (buf
), f
) != NULL
)
1238 /* check if the filename matches the beginning of string */
1239 if (strncmp (buf
, filename
, len
) != 0)
1242 /* followed by single space */
1243 if (buf
[len
] != ' ')
1246 /* and string without spaces */
1248 if (strchr (p
, ' ') != NULL
)
1251 pos_tokens
= g_strsplit (p
, ";", 3 + MAX_SAVED_BOOKMARKS
);
1252 if (pos_tokens
[0] == NULL
)
1260 *line
= strtol (pos_tokens
[0], NULL
, 10);
1261 if (pos_tokens
[1] == NULL
)
1268 *column
= strtol (pos_tokens
[1], NULL
, 10);
1269 if (pos_tokens
[2] == NULL
)
1275 *offset
= strtoll (pos_tokens
[2], NULL
, 10);
1277 for (i
= 0; i
< MAX_SAVED_BOOKMARKS
&& pos_tokens
[3 + i
] != NULL
; i
++)
1281 val
= strtoul (pos_tokens
[3 + i
], NULL
, 10);
1282 g_array_append_val (*bookmarks
, val
);
1288 g_strfreev (pos_tokens
);
1294 /* --------------------------------------------------------------------------------------------- */
1296 * Save position for the given file
1300 save_file_position (const char *filename
, long line
, long column
, off_t offset
, GArray
* bookmarks
)
1302 static size_t filepos_max_saved_entries
= 0;
1305 char buf
[MC_MAXPATHLEN
+ 100];
1307 const size_t len
= strlen (filename
);
1308 gboolean src_error
= FALSE
;
1310 if (filepos_max_saved_entries
== 0)
1311 filepos_max_saved_entries
= mc_config_get_int (mc_main_config
, CONFIG_APP_SECTION
,
1312 "filepos_max_saved_entries", 1024);
1314 fn
= g_build_filename (mc_config_get_cache_path (), MC_FILEPOS_FILE
, NULL
);
1318 mc_util_make_backup_if_possible (fn
, TMP_SUFFIX
);
1321 f
= fopen (fn
, "w");
1323 goto open_target_error
;
1325 tmp_fn
= g_strdup_printf ("%s" TMP_SUFFIX
, fn
);
1326 tmp_f
= fopen (tmp_fn
, "r");
1330 goto open_source_error
;
1333 /* put the new record */
1334 if (line
!= 1 || column
!= 0 || bookmarks
!= NULL
)
1336 if (fprintf (f
, "%s %ld;%ld;%" PRIuMAX
, filename
, line
, column
, (uintmax_t) offset
) < 0)
1337 goto write_position_error
;
1338 if (bookmarks
!= NULL
)
1339 for (i
= 0; i
< bookmarks
->len
&& i
< MAX_SAVED_BOOKMARKS
; i
++)
1340 if (fprintf (f
, ";%zu", g_array_index (bookmarks
, size_t, i
)) < 0)
1341 goto write_position_error
;
1343 if (fprintf (f
, "\n") < 0)
1344 goto write_position_error
;
1348 while (fgets (buf
, sizeof (buf
), tmp_f
) != NULL
)
1350 if (buf
[len
] == ' ' && strncmp (buf
, filename
, len
) == 0
1351 && strchr (&buf
[len
+ 1], ' ') == NULL
)
1354 fprintf (f
, "%s", buf
);
1355 if (++i
> filepos_max_saved_entries
)
1359 write_position_error
:
1365 mc_util_restore_from_backup_if_possible (fn
, TMP_SUFFIX
);
1367 mc_util_unlink_backup_if_possible (fn
, TMP_SUFFIX
);
1371 if (bookmarks
!= NULL
)
1372 g_array_free (bookmarks
, TRUE
);
1375 /* --------------------------------------------------------------------------------------------- */
1378 ascii_alpha_to_cntrl (int ch
)
1380 if ((ch
>= ASCII_A
&& ch
<= ASCII_Z
) || (ch
>= ASCII_a
&& ch
<= ASCII_z
))
1387 /* --------------------------------------------------------------------------------------------- */
1392 const char *result
, *sep
;
1395 sep
= strchr (result
, '|');
1396 return (sep
!= NULL
) ? sep
+ 1 : result
;
1399 /* --------------------------------------------------------------------------------------------- */
1402 mc_util_make_backup_if_possible (const char *file_name
, const char *backup_suffix
)
1404 struct stat stat_buf
;
1407 if (!exist_file (file_name
))
1410 backup_path
= g_strdup_printf ("%s%s", file_name
, backup_suffix
);
1412 if (backup_path
== NULL
)
1415 ret
= mc_util_write_backup_content (file_name
, backup_path
);
1419 /* Backup file will have same ownership with main file. */
1420 if (stat (file_name
, &stat_buf
) == 0)
1421 chmod (backup_path
, stat_buf
.st_mode
);
1423 chmod (backup_path
, S_IRUSR
| S_IWUSR
);
1426 g_free (backup_path
);
1431 /* --------------------------------------------------------------------------------------------- */
1434 mc_util_restore_from_backup_if_possible (const char *file_name
, const char *backup_suffix
)
1439 backup_path
= g_strdup_printf ("%s%s", file_name
, backup_suffix
);
1440 if (backup_path
== NULL
)
1443 ret
= mc_util_write_backup_content (backup_path
, file_name
);
1444 g_free (backup_path
);
1449 /* --------------------------------------------------------------------------------------------- */
1452 mc_util_unlink_backup_if_possible (const char *file_name
, const char *backup_suffix
)
1456 backup_path
= g_strdup_printf ("%s%s", file_name
, backup_suffix
);
1457 if (backup_path
== NULL
)
1460 if (exist_file (backup_path
))
1461 mc_unlink (backup_path
);
1463 g_free (backup_path
);
1467 /* --------------------------------------------------------------------------------------------- */
1469 * partly taken from dcigettext.c, returns "" for default locale
1470 * value should be freed by calling function g_free()
1474 guess_message_value (void)
1476 static const char *const var
[] = {
1477 /* Setting of LC_ALL overwrites all other. */
1478 /* Do not use LANGUAGE for check user locale and drowing hints */
1480 /* Next comes the name of the desired category. */
1482 /* Last possibility is the LANG environment variable. */
1484 /* NULL exit loops */
1489 const char *locale
= NULL
;
1491 while (var
[i
] != NULL
)
1493 locale
= getenv (var
[i
]);
1494 if (locale
!= NULL
&& locale
[0] != '\0')
1502 return g_strdup (locale
);
1505 /* --------------------------------------------------------------------------------------------- */