/* Various utilities Copyright (C) 1994, 1995, 1996 the Free Software Foundation. Written 1994, 1995, 1996 by: Miguel de Icaza, Janne Kukonlehto, Dugan Porter, Jakub Jelinek, Mauricio Plaza. The file_date routine is mostly from GNU's fileutils package, written by Richard Stallman and David MacKenzie. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include #include #include #ifdef HAVE_UNISTD_H # include #endif #include /* INT_MAX */ #include #include #include #include #include "global.h" #include "profile.h" #include "main.h" /* mc_home */ #include "cmd.h" /* guess_message_value */ #include "mountlist.h" #include "win.h" /* xterm_flag */ #ifdef HAVE_CHARSET #include "charsets.h" #endif static const char app_text [] = "Midnight-Commander"; int easy_patterns = 1; extern void str_replace(char *s, char from, char to) { for (; *s != '\0'; s++) { if (*s == from) *s = to; } } static inline int is_7bit_printable (unsigned char c) { return (c > 31 && c < 127); } static inline int is_iso_printable (unsigned char c) { return ((c > 31 && c < 127) || c >= 160); } static inline int is_8bit_printable (unsigned char c) { /* "Full 8 bits output" doesn't work on xterm */ if (xterm_flag) return is_iso_printable (c); return (c > 31 && c != 127 && c != 155); } int is_printable (int c) { c &= 0xff; #ifdef HAVE_CHARSET /* "Display bits" is ignored, since the user controls the output by setting the output codepage */ return is_8bit_printable (c); #else if (!eight_bit_clean) return is_7bit_printable (c); if (full_eight_bits) { return is_8bit_printable (c); } else return is_iso_printable (c); #endif /* !HAVE_CHARSET */ } /* Returns the message dimensions (lines and columns) */ int msglen (const char *text, int *lines) { int max = 0; int line_len = 0; for (*lines = 1;*text; text++){ if (*text == '\n'){ line_len = 0; (*lines)++; } else { line_len++; if (line_len > max) max = line_len; } } return max; } /* * Copy from s to d, and trim the beginning if necessary, and prepend * "..." in this case. The destination string can have at most len * bytes, not counting trailing 0. */ char * trim (char *s, char *d, int len) { int source_len; /* Sanity check */ len = max (len, 0); source_len = strlen (s); if (source_len > len) { /* Cannot fit the whole line */ if (len <= 3) { /* We only have room for the dots */ memset (d, '.', len); d[len] = 0; return d; } else { /* Begin with ... and add the rest of the source string */ memset (d, '.', 3); strcpy (d + 3, s + 3 + source_len - len); } } else /* We can copy the whole line */ strcpy (d, s); return d; } /* * Quote the filename for the purpose of inserting it into the command * line. If quote_percent is 1, replace "%" with "%%" - the percent is * processed by the mc command line. */ char * name_quote (const char *s, int quote_percent) { char *ret, *d; d = ret = g_malloc (strlen (s) * 2 + 2 + 1); if (*s == '-') { *d++ = '.'; *d++ = '/'; } for (; *s; s++, d++) { switch (*s) { case '%': if (quote_percent) *d++ = '%'; break; case '\'': case '\\': case '\r': case '\n': case '\t': case '"': case ';': case ' ': case '?': case '|': case '[': case ']': case '{': case '}': case '<': case '>': case '`': case '!': case '$': case '&': case '*': case '(': case ')': *d++ = '\\'; break; case '~': case '#': if (d == ret) *d++ = '\\'; break; } *d = *s; } *d = '\0'; return ret; } char * fake_name_quote (const char *s, int quote_percent) { return g_strdup (s); } /* * Remove the middle part of the string to fit given length. * Use "~" to show where the string was truncated. * Return static buffer, no need to free() it. */ char * name_trunc (const char *txt, int trunc_len) { static char x[MC_MAXPATHLEN + MC_MAXPATHLEN]; int txt_len; char *p; if ((size_t) trunc_len > sizeof (x) - 1) { trunc_len = sizeof (x) - 1; } txt_len = strlen (txt); if (txt_len <= trunc_len) { strcpy (x, txt); } else { int y = (trunc_len / 2) + (trunc_len % 2); strncpy (x, txt, y); strncpy (x + y, txt + txt_len - (trunc_len / 2), trunc_len / 2); x[y] = '~'; } x[trunc_len] = 0; for (p = x; *p; p++) if (!is_printable (*p)) *p = '?'; return x; } char *size_trunc (double size) { static char x [BUF_TINY]; long int divisor = 1; char *xtra = ""; if (size > 999999999L){ divisor = 1024; xtra = "K"; if (size/divisor > 999999999L){ divisor = 1024*1024; xtra = "M"; } } g_snprintf (x, sizeof (x), "%.0f%s", (size/divisor), xtra); return x; } char *size_trunc_sep (double size) { static char x [60]; int count; char *p, *d, *y; p = y = size_trunc (size); p += strlen (p) - 1; d = x + sizeof (x) - 1; *d-- = 0; while (p >= y && isalpha ((unsigned char) *p)) *d-- = *p--; for (count = 0; p >= y; count++){ if (count == 3){ *d-- = ','; count = 0; } *d-- = *p--; } d++; if (*d == ',') d++; return d; } /* * Print file SIZE to BUFFER, but don't exceed LEN characters, * not including trailing 0. BUFFER should be at least LEN+1 long. * This function is called for every file on panels, so avoid * floating point by any means. * * Units: size units (filesystem sizes are 1K blocks) * 0=bytes, 1=Kbytes, 2=Mbytes, etc. */ void size_trunc_len (char *buffer, int len, off_t size, int units) { /* Avoid taking power for every file. */ static const off_t power10 [] = {1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000}; static const char * const suffix [] = {"", "K", "M", "G", "T", "P", "E", "Z", "Y", NULL}; int j = 0; /* Don't print more than 9 digits - use suffix. */ if (len == 0 || len > 9) len = 9; for (j = units; suffix [j] != NULL; j++) { if (size == 0) { if (j == units) { /* Empty files will print "0" even with minimal width. */ g_snprintf (buffer, len + 1, "0"); break; } /* Use "~K" or just "K" if len is 1. Use "B" for bytes. */ g_snprintf (buffer, len + 1, (len > 1) ? "~%s" : "%s", (j > 1) ? suffix[j - 1] : "B"); break; } if (size < power10 [len - (j > 0)]) { g_snprintf (buffer, len + 1, "%lu%s", (unsigned long) size, suffix[j]); break; } /* Powers of 1024, with rounding. */ size = (size + 512) >> 10; } } int is_exe (mode_t mode) { if ((S_IXUSR & mode) || (S_IXGRP & mode) || (S_IXOTH & mode)) return 1; return 0; } #define ismode(n,m) ((n & m) == m) char * string_perm (mode_t mode_bits) { static char mode[11]; strcpy (mode, "----------"); if (S_ISDIR (mode_bits)) mode[0] = 'd'; if (S_ISCHR (mode_bits)) mode[0] = 'c'; if (S_ISBLK (mode_bits)) mode[0] = 'b'; if (S_ISLNK (mode_bits)) mode[0] = 'l'; if (S_ISFIFO (mode_bits)) mode[0] = 'p'; if (S_ISSOCK (mode_bits)) mode[0] = 's'; if (S_ISDOOR (mode_bits)) mode[0] = 'D'; if (ismode (mode_bits, S_IXOTH)) mode[9] = 'x'; if (ismode (mode_bits, S_IWOTH)) mode[8] = 'w'; if (ismode (mode_bits, S_IROTH)) mode[7] = 'r'; if (ismode (mode_bits, S_IXGRP)) mode[6] = 'x'; if (ismode (mode_bits, S_IWGRP)) mode[5] = 'w'; if (ismode (mode_bits, S_IRGRP)) mode[4] = 'r'; if (ismode (mode_bits, S_IXUSR)) mode[3] = 'x'; if (ismode (mode_bits, S_IWUSR)) mode[2] = 'w'; if (ismode (mode_bits, S_IRUSR)) mode[1] = 'r'; #ifdef S_ISUID if (ismode (mode_bits, S_ISUID)) mode[3] = (mode[3] == 'x') ? 's' : 'S'; #endif /* S_ISUID */ #ifdef S_ISGID if (ismode (mode_bits, S_ISGID)) mode[6] = (mode[6] == 'x') ? 's' : 'S'; #endif /* S_ISGID */ #ifdef S_ISVTX if (ismode (mode_bits, S_ISVTX)) mode[9] = (mode[9] == 'x') ? 't' : 'T'; #endif /* S_ISVTX */ return mode; } /* p: string which might contain an url with a password (this parameter is modified in place). has_prefix = 0: The first parameter is an url without a prefix (user[:pass]@]machine[:port][remote-dir). Delete the password. has_prefix = 1: Search p for known url prefixes. If found delete the password from the url. Cavevat: only the first url is found */ char * strip_password (char *p, int has_prefix) { static const struct { char *name; size_t len; } prefixes[] = { {"/#ftp:", 6}, {"/#mc:", 5}, {"ftp://", 6}, {"/#smb:", 6}, }; char *at, *inner_colon, *dir; size_t i; char *result = p; for (i = 0; i < sizeof (prefixes)/sizeof (prefixes[0]); i++) { char *q; if (has_prefix) { if((q = strstr (p, prefixes[i].name)) == 0) continue; else p = q + prefixes[i].len; }; if ((dir = strchr (p, PATH_SEP)) != NULL) *dir = '\0'; /* search for any possible user */ at = strchr (p, '@'); /* We have a username */ if (at) { *at = 0; inner_colon = strchr (p, ':'); *at = '@'; if (inner_colon) strcpy (inner_colon, at); } if (dir) *dir = PATH_SEP; break; } return (result); } char *strip_home_and_password(const char *dir) { size_t len; static char newdir [MC_MAXPATHLEN]; if (home_dir && !strncmp (dir, home_dir, len = strlen (home_dir)) && (dir[len] == PATH_SEP || dir[len] == '\0')){ newdir [0] = '~'; strcpy (&newdir [1], &dir [len]); return newdir; } /* We do not strip homes in /#ftp tree, I do not like ~'s there (see ftpfs.c why) */ strcpy (newdir, dir); strip_password (newdir, 1); return newdir; } static char *maybe_start_group (char *d, int do_group, int *was_wildcard) { if (!do_group) return d; if (*was_wildcard) return d; *was_wildcard = 1; *d++ = '\\'; *d++ = '('; return d; } static char *maybe_end_group (char *d, int do_group, int *was_wildcard) { if (!do_group) return d; if (!*was_wildcard) return d; *was_wildcard = 0; *d++ = '\\'; *d++ = ')'; return d; } /* If shell patterns are on converts a shell pattern to a regular expression. Called by regexp_match and mask_rename. */ /* Shouldn't we support [a-fw] type wildcards as well ?? */ char *convert_pattern (char *pattern, int match_type, int do_group) { char *s, *d; char *new_pattern; int was_wildcard = 0; if ((match_type != match_regex) && easy_patterns){ new_pattern = g_malloc (MC_MAXPATHLEN); d = new_pattern; if (match_type == match_file) *d++ = '^'; for (s = pattern; *s; s++, d++){ switch (*s){ case '*': d = maybe_start_group (d, do_group, &was_wildcard); *d++ = '.'; *d = '*'; break; case '?': d = maybe_start_group (d, do_group, &was_wildcard); *d = '.'; break; case '.': d = maybe_end_group (d, do_group, &was_wildcard); *d++ = '\\'; *d = '.'; break; default: d = maybe_end_group (d, do_group, &was_wildcard); *d = *s; break; } } d = maybe_end_group (d, do_group, &was_wildcard); if (match_type == match_file) *d++ = '$'; *d = 0; return new_pattern; } else return g_strdup (pattern); } int regexp_match (char *pattern, char *string, int match_type) { static regex_t r; static char *old_pattern = NULL; static int old_type; int rval; if (!old_pattern || STRCOMP (old_pattern, pattern) || old_type != match_type){ if (old_pattern){ regfree (&r); g_free (old_pattern); old_pattern = NULL; } pattern = convert_pattern (pattern, match_type, 0); if (regcomp (&r, pattern, REG_EXTENDED|REG_NOSUB|MC_ARCH_FLAGS)) { g_free (pattern); return -1; } old_pattern = pattern; old_type = match_type; } rval = !regexec (&r, string, 0, NULL, 0); return rval; } char *extension (char *filename) { char *d; if (!(*filename)) return ""; d = filename + strlen (filename) - 1; for (;d >= filename; d--){ if (*d == '.') return d+1; } return ""; } int get_int (char *file, char *key, int def) { return GetPrivateProfileInt (app_text, key, def, file); } int set_int (char *file, char *key, int value) { char buffer [BUF_TINY]; g_snprintf (buffer, sizeof (buffer), "%d", value); return WritePrivateProfileString (app_text, key, buffer, file); } int exist_file (char *name) { return access (name, R_OK) == 0; } char *load_file (char *filename) { FILE *data_file; struct stat s; char *data; long read_size; if ((data_file = fopen (filename, "r")) == NULL){ return 0; } if (fstat (fileno (data_file), &s) != 0){ fclose (data_file); return 0; } data = g_malloc (s.st_size+1); read_size = fread (data, 1, s.st_size, data_file); data [read_size] = 0; fclose (data_file); if (read_size > 0) return data; else { g_free (data); return 0; } } char * load_mc_home_file (const char *filename, char **allocated_filename) { char *hintfile_base, *hintfile; char *lang; char *data; hintfile_base = concat_dir_and_file (mc_home, filename); lang = guess_message_value (); hintfile = g_strconcat (hintfile_base, ".", lang, NULL); data = load_file (hintfile); if (!data) { g_free (hintfile); /* Fall back to the two-letter language code */ if (lang[0] && lang[1]) lang[2] = 0; hintfile = g_strconcat (hintfile_base, ".", lang, NULL); data = load_file (hintfile); if (!data) { g_free (hintfile); hintfile = hintfile_base; data = load_file (hintfile_base); } } g_free (lang); if (hintfile != hintfile_base) g_free (hintfile_base); if (allocated_filename) *allocated_filename = hintfile; else g_free (hintfile); return data; } /* Check strftime() results. Some systems (i.e. Solaris) have different short-month-name sizes for different locales */ size_t i18n_checktimelength (void) { size_t length, a, b; char buf [MAX_I18NTIMELENGTH + 1]; time_t testtime = time (NULL); a = strftime (buf, sizeof(buf)-1, _("%b %e %H:%M"), localtime(&testtime)); b = strftime (buf, sizeof(buf)-1, _("%b %e %Y"), localtime(&testtime)); length = max (a, b); /* Don't handle big differences. Use standard value (email bug, please) */ if ( length > MAX_I18NTIMELENGTH || length < MIN_I18NTIMELENGTH ) length = STD_I18NTIMELENGTH; return length; } char *file_date (time_t when) { static char timebuf [MAX_I18NTIMELENGTH + 1]; time_t current_time = time ((time_t) 0); static size_t i18n_timelength = 0; static char *fmtyear, *fmttime; char *fmt; if (i18n_timelength == 0){ i18n_timelength = i18n_checktimelength() + 1; /* strftime() format string for old dates */ fmtyear = _("%b %e %Y"); /* strftime() format string for recent dates */ fmttime = _("%b %e %H:%M"); } if (current_time > when + 6L * 30L * 24L * 60L * 60L /* Old. */ || current_time < when - 60L * 60L) /* In the future. */ /* The file is fairly old or in the future. POSIX says the cutoff is 6 months old; approximate this by 6*30 days. Allow a 1 hour slop factor for what is considered "the future", to allow for NFS server/client clock disagreement. Show the year instead of the time of day. */ fmt = fmtyear; else fmt = fmttime; strftime (timebuf, i18n_timelength, fmt, localtime(&when)); return timebuf; } char *extract_line (char *s, char *top) { static char tmp_line [BUF_MEDIUM]; char *t = tmp_line; while (*s && *s != '\n' && (size_t) (t - tmp_line) < sizeof (tmp_line)-1 && s < top) *t++ = *s++; *t = 0; return tmp_line; } /* FIXME: I should write a faster version of this (Aho-Corasick stuff) */ char * _icase_search (char *text, char *data, int *lng) { char *d = text; char *e = data; int dlng = 0; if (lng) *lng = 0; for (;*e; e++) { while (*(e+1) == '\b' && *(e+2)) { e += 2; dlng += 2; } if (toupper((unsigned char) *d) == toupper((unsigned char) *e)) d++; else { e -= d - text; d = text; dlng = 0; } if (!*d) { if (lng) *lng = strlen (text) + dlng; return e+1; } } return 0; } /* The basename routine */ const char *x_basename (const char *s) { const char *where; return ((where = strrchr (s, PATH_SEP))) ? where + 1 : s; } char *unix_error_string (int error_num) { static char buffer [BUF_LARGE]; #if GLIB_MAJOR_VERSION >= 2 gchar *strerror_currentlocale; strerror_currentlocale = g_locale_from_utf8(g_strerror (error_num), -1, NULL, NULL, NULL); g_snprintf (buffer, sizeof (buffer), "%s (%d)", strerror_currentlocale, error_num); g_free(strerror_currentlocale); #else g_snprintf (buffer, sizeof (buffer), "%s (%d)", g_strerror (error_num), error_num); #endif return buffer; } char *skip_separators (char *s) { for (;*s; s++) if (*s != ' ' && *s != '\t' && *s != ',') break; return s; } char *skip_numbers (char *s) { for (;*s; s++) if (!isdigit ((unsigned int) *s)) break; return s; } /* Remove all control sequences from the argument string. We define * "control sequence", in a sort of pidgin BNF, as follows: * * control-seq = Esc non-'[' * | Esc '[' (0 or more digits or ';' or '?') (any other char) * * This scheme works for all the terminals described in my termcap / * terminfo databases, except the Hewlett-Packard 70092 and some Wyse * terminals. If I hear from a single person who uses such a terminal * with MC, I'll be glad to add support for it. (Dugan) * Non-printable characters are also removed. */ char *strip_ctrl_codes (char *s) { char *w; /* Current position where the stripped data is written */ char *r; /* Current position where the original data is read */ if (!s) return 0; for (w = s, r = s; *r; ) { if (*r == ESC_CHAR) { /* Skip the control sequence's arguments */ ; if (*(++r) == '[') { /* strchr() matches trailing binary 0 */ while (*(++r) && strchr ("0123456789;?", *r)); } /* * Now we are at the last character of the sequence. * Skip it unless it's binary 0. */ if (*r) r++; continue; } if (is_printable(*r)) *w++ = *r; ++r; } *w = 0; return s; } #ifndef USE_VFS char *get_current_wd (char *buffer, int size) { char *p; int len; p = g_get_current_dir (); len = strlen(p) + 1; if (len > size) { g_free (p); return NULL; } strncpy (buffer, p, len); g_free (p); return buffer; } #endif /* !USE_VFS */ /* This function returns 0 if the file is not in not compressed by * one of the supported compressors (gzip, bzip, bzip2). Otherwise, * the compression type is returned, as defined in util.h * Warning: this function moves the current file pointer */ int get_compression_type (int fd) { unsigned char magic[4]; /* Read the magic signature */ if (mc_read (fd, (char *) magic, 4) != 4) return COMPRESSION_NONE; /* GZIP_MAGIC and OLD_GZIP_MAGIC */ if (magic[0] == 037 && (magic[1] == 0213 || magic[1] == 0236)) { return COMPRESSION_GZIP; } /* PKZIP_MAGIC */ if (magic[0] == 0120 && magic[1] == 0113 && magic[2] == 003 && magic[3] == 004) { /* Read compression type */ mc_lseek (fd, 8, SEEK_SET); if (mc_read (fd, (char *) magic, 2) != 2) return COMPRESSION_NONE; /* Gzip can handle only deflated (8) or stored (0) files */ if ((magic[0] != 8 && magic[0] != 0) || magic[1] != 0) return COMPRESSION_NONE; /* Compatible with gzip */ return COMPRESSION_GZIP; } /* PACK_MAGIC and LZH_MAGIC and compress magic */ if (magic[0] == 037 && (magic[1] == 036 || magic[1] == 0240 || magic[1] == 0235)) { /* Compatible with gzip */ return COMPRESSION_GZIP; } /* BZIP and BZIP2 files */ if ((magic[0] == 'B') && (magic[1] == 'Z') && (magic[3] >= '1') && (magic[3] <= '9')) { switch (magic[2]) { case '0': return COMPRESSION_BZIP; case 'h': return COMPRESSION_BZIP2; } } return 0; } const char * decompress_extension (int type) { switch (type){ case COMPRESSION_GZIP: return "#ugz"; case COMPRESSION_BZIP: return "#ubz"; case COMPRESSION_BZIP2: return "#ubz2"; } /* Should never reach this place */ fprintf (stderr, "Fatal: decompress_extension called with an unknown argument\n"); return 0; } /* Hooks */ void add_hook (Hook **hook_list, void (*hook_fn)(void *), void *data) { Hook *new_hook = g_new (Hook, 1); new_hook->hook_fn = hook_fn; new_hook->next = *hook_list; new_hook->hook_data = data; *hook_list = new_hook; } void execute_hooks (Hook *hook_list) { Hook *new_hook = 0; Hook *p; /* We copy the hook list first so tahat we let the hook * function call delete_hook */ while (hook_list){ add_hook (&new_hook, hook_list->hook_fn, hook_list->hook_data); hook_list = hook_list->next; } p = new_hook; while (new_hook){ (*new_hook->hook_fn)(new_hook->hook_data); new_hook = new_hook->next; } for (hook_list = p; hook_list;){ p = hook_list; hook_list = hook_list->next; g_free (p); } } void delete_hook (Hook **hook_list, void (*hook_fn)(void *)) { Hook *current, *new_list, *next; new_list = 0; for (current = *hook_list; current; current = next){ next = current->next; if (current->hook_fn == hook_fn) g_free (current); else add_hook (&new_list, current->hook_fn, current->hook_data); } *hook_list = new_list; } int hook_present (Hook *hook_list, void (*hook_fn)(void *)) { Hook *p; for (p = hook_list; p; p = p->next) if (p->hook_fn == hook_fn) return 1; return 0; } void wipe_password (char *passwd) { char *p = passwd; if (!p) return; for (;*p ; p++) *p = 0; g_free (passwd); } /* Convert "\E" -> esc character and ^x to control-x key and ^^ to ^ key */ /* Returns a newly allocated string */ char *convert_controls (char *s) { char *valcopy = g_strdup (s); char *p, *q; /* Parse the escape special character */ for (p = s, q = valcopy; *p;){ if (*p == '\\'){ p++; if ((*p == 'e') || (*p == 'E')){ p++; *q++ = ESC_CHAR; } } else { if (*p == '^'){ p++; if (*p == '^') *q++ = *p++; else { *p = (*p | 0x20); if (*p >= 'a' && *p <= 'z') { *q++ = *p++ - 'a' + 1; } else p++; } } else *q++ = *p++; } } *q = 0; return valcopy; } static char *resolve_symlinks (char *path) { char *buf, *buf2, *p, *q, *r, c; int len; struct stat mybuf; if (*path != PATH_SEP) return NULL; r = buf = g_malloc (MC_MAXPATHLEN); buf2 = g_malloc (MC_MAXPATHLEN); *r++ = PATH_SEP; *r = 0; p = path; for (;;) { q = strchr (p + 1, PATH_SEP); if (!q) { q = strchr (p + 1, 0); if (q == p + 1) break; } c = *q; *q = 0; if (mc_lstat (path, &mybuf) < 0) { g_free (buf); g_free (buf2); *q = c; return NULL; } if (!S_ISLNK (mybuf.st_mode)) strcpy (r, p + 1); else { len = mc_readlink (path, buf2, MC_MAXPATHLEN - 1); if (len < 0) { g_free (buf); g_free (buf2); *q = c; return NULL; } buf2 [len] = 0; if (*buf2 == PATH_SEP) strcpy (buf, buf2); else strcpy (r, buf2); } canonicalize_pathname (buf); r = strchr (buf, 0); if (!*r || *(r - 1) != PATH_SEP) { *r++ = PATH_SEP; *r = 0; } *q = c; p = q; if (!c) break; } if (!*buf) strcpy (buf, PATH_SEP_STR); else if (*(r - 1) == PATH_SEP && r != buf + 1) *(r - 1) = 0; g_free (buf2); return buf; } /* Finds out a relative path from first to second, i.e. goes as many .. * as needed up in first and then goes down using second */ char *diff_two_paths (char *first, char *second) { char *p, *q, *r, *s, *buf = 0; int i, j, prevlen = -1, currlen; first = resolve_symlinks (first); if (first == NULL) return NULL; for (j = 0; j < 2; j++) { p = first; if (j) { second = resolve_symlinks (second); if (second == NULL) { g_free (first); return buf; } } q = second; for (;;) { r = strchr (p, PATH_SEP); s = strchr (q, PATH_SEP); if (!r || !s) break; *r = 0; *s = 0; if (strcmp (p, q)) { *r = PATH_SEP; *s = PATH_SEP; break; } else { *r = PATH_SEP; *s = PATH_SEP; } p = r + 1; q = s + 1; } p--; for (i = 0; (p = strchr (p + 1, PATH_SEP)) != NULL; i++); currlen = (i + 1) * 3 + strlen (q) + 1; if (j) { if (currlen < prevlen) g_free (buf); else { g_free (first); g_free (second); return buf; } } p = buf = g_malloc (currlen); prevlen = currlen; for (; i >= 0; i--, p += 3) strcpy (p, "../"); strcpy (p, q); } g_free (first); g_free (second); return buf; } /* If filename is NULL, then we just append PATH_SEP to the dir */ char * concat_dir_and_file (const char *dir, const char *file) { int i = strlen (dir); if (dir [i-1] == PATH_SEP) return g_strconcat (dir, file, NULL); else return g_strconcat (dir, PATH_SEP_STR, file, NULL); } /* Append text to GList, remove all entries with the same text */ GList * list_append_unique (GList *list, char *text) { GList *link, *newlink; /* * Go to the last position and traverse the list backwards * starting from the second last entry to make sure that we * are not removing the current link. */ list = g_list_append (list, text); list = g_list_last (list); link = g_list_previous (list); while (link) { newlink = g_list_previous (link); if (!strcmp ((char *) link->data, text)) { g_free (link->data); g_list_remove_link (list, link); g_list_free_1 (link); } link = newlink; } return list; } /* Following code heavily borrows from libiberty, mkstemps.c */ /* Number of attempts to create a temporary file */ #ifndef TMP_MAX #define TMP_MAX 16384 #endif /* !TMP_MAX */ /* * Arguments: * pname (output) - pointer to the name of the temp file (needs g_free). * NULL if the function fails. * prefix - part of the filename before the random part. * Prepend $TMPDIR or /tmp if there are no path separators. * suffix - if not NULL, part of the filename after the random part. * * Result: * handle of the open file or -1 if couldn't open any. */ int mc_mkstemps (char **pname, const char *prefix, const char *suffix) { static const char letters[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; static unsigned long value; struct timeval tv; char *tmpbase; char *tmpname; char *XXXXXX; int count; if (strchr (prefix, PATH_SEP) == NULL) { /* Add prefix first to find the position of XXXXXX */ tmpbase = concat_dir_and_file (mc_tmpdir (), prefix); } else { tmpbase = g_strdup (prefix); } tmpname = g_strconcat (tmpbase, "XXXXXX", suffix, NULL); *pname = tmpname; XXXXXX = &tmpname[strlen (tmpbase)]; g_free (tmpbase); /* Get some more or less random data. */ gettimeofday (&tv, NULL); value += (tv.tv_usec << 16) ^ tv.tv_sec ^ getpid (); for (count = 0; count < TMP_MAX; ++count) { unsigned long v = value; int fd; /* Fill in the random bits. */ XXXXXX[0] = letters[v % 62]; v /= 62; XXXXXX[1] = letters[v % 62]; v /= 62; XXXXXX[2] = letters[v % 62]; v /= 62; XXXXXX[3] = letters[v % 62]; v /= 62; XXXXXX[4] = letters[v % 62]; v /= 62; XXXXXX[5] = letters[v % 62]; fd = open (tmpname, O_RDWR | O_CREAT | O_TRUNC | O_EXCL, S_IRUSR | S_IWUSR); if (fd >= 0) { /* Successfully created. */ return fd; } /* This is a random value. It is only necessary that the next TMP_MAX values generated by adding 7777 to VALUE are different with (module 2^32). */ value += 7777; } /* Unsuccessful. Free the filename. */ g_free (tmpname); *pname = NULL; return -1; } /* * Read and restore position for the given filename. * If there is no stored data, return line 1 and col 0. */ void load_file_position (char *filename, long *line, long *column) { char *fn; FILE *f; char buf[MC_MAXPATHLEN + 20]; int len; /* defaults */ *line = 1; *column = 0; /* open file with positions */ fn = concat_dir_and_file (home_dir, MC_FILEPOS); f = fopen (fn, "r"); g_free (fn); if (!f) return; len = strlen (filename); while (fgets (buf, sizeof (buf), f)) { char *p; /* check if the filename matches the beginning of string */ if (strncmp (buf, filename, len) != 0) continue; /* followed by single space */ if (buf[len] != ' ') continue; /* and string without spaces */ p = &buf[len + 1]; if (strchr (p, ' ')) continue; *line = atol (p); p = strchr (buf, ';'); *column = atol (&p[1]); } fclose (f); } /* Save position for the given file */ void save_file_position (char *filename, long line, long column) { char *tmp, *fn; FILE *f, *t; char buf[MC_MAXPATHLEN + 20]; int i = 1; int len; len = strlen (filename); tmp = concat_dir_and_file (home_dir, MC_FILEPOS_TMP); fn = concat_dir_and_file (home_dir, MC_FILEPOS); /* open temporary file */ t = fopen (tmp, "w"); if (!t) { g_free (tmp); g_free (fn); return; } /* put the new record */ fprintf (t, "%s %ld;%ld\n", filename, line, column); /* copy records from the old file */ f = fopen (fn, "r"); if (f) { while (fgets (buf, sizeof (buf), f)) { /* Skip entries for the current filename */ if (strncmp (buf, filename, len) == 0 && buf[len] == ' ' && !strchr (&buf[len + 1], ' ')) continue; fprintf (t, "%s", buf); if (++i > MC_FILEPOS_ENTRIES) break; } fclose (f); } fclose (t); rename (tmp, fn); g_free (tmp); g_free (fn); }