1 /* complete.c -- filename completion for readline. */
3 /* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
5 This file is part of the GNU Readline Library, a library for
6 reading lines of text with interactive input and history editing.
8 The GNU Readline Library is free software; you can redistribute it
9 and/or modify it under the terms of the GNU General Public License
10 as published by the Free Software Foundation; either version 1, or
11 (at your option) any later version.
13 The GNU Readline Library is distributed in the hope that it will be
14 useful, but WITHOUT ANY WARRANTY; without even the implied warranty
15 of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 The GNU General Public License is often shipped with GNU software, and
19 is generally kept in a file called COPYING or LICENSE. If you do not
20 have a copy of the license, write to the Free Software Foundation,
21 675 Mass Ave, Cambridge, MA 02139, USA. */
26 #if !defined (NO_SYS_FILE)
27 # include <sys/file.h>
28 #endif /* !NO_SYS_FILE */
31 /* Not all systems declare ERRNO in errno.h... and some systems #define it! */
36 /* These next are for filename completion. Perhaps this belongs
37 in a different place. */
38 #if !defined(__MSDOS__) && !defined(_MSC_VER)
40 #endif /* __MSDOS__ */
41 #if defined (USG) && !defined (isc386) && !defined (sgi)
42 extern struct passwd *getpwuid (), *getpwent ();
44 #if defined (isc386) && !defined (__STDC__) && defined (_POSIX_SOURCE)
45 extern struct passwd *getpwent ();
48 /* Included by <fcntl.h> on some systems, but not SCO, so include it here. */
51 /* System-specific feature definitions and include files. */
54 /* Some standard library routines. */
57 /* Possible values for do_replace in rl_complete_internal. */
59 #define SINGLE_MATCH 1
62 #if !defined (strchr) && !defined (__STDC__)
63 extern char *strchr (), *strrchr ();
64 #endif /* !strchr && !__STDC__ */
66 extern char *tilde_expand ();
67 extern char *rl_copy_text ();
69 extern Function *rl_last_func;
70 extern int rl_editing_mode;
71 extern int screenwidth;
73 /* Forward declarations for functions defined and used in this file. */
74 char *filename_completion_function ();
75 char **completion_matches ();
77 static int compare_strings ();
78 static char *rl_strpbrk ();
80 #if defined (STATIC_MALLOC)
81 static char *xmalloc (), *xrealloc ();
83 extern char *xmalloc (), *xrealloc ();
84 #endif /* STATIC_MALLOC */
86 /* If non-zero, then this is the address of a function to call when
87 completing on a directory name. The function is called with
88 the address of a string (the current directory name) as an arg. */
89 Function *rl_symbolic_link_hook = (Function *)NULL;
91 /* Non-zero means readline completion functions perform tilde expansion. */
92 int rl_complete_with_tilde_expansion = 0;
96 #if defined (VISIBLE_STATS)
101 static int stat_char ();
103 /* Non-zero means add an additional character to each filename displayed
104 during listing completion iff rl_filename_completion_desired which helps
105 to indicate the type of file being listed. */
106 int rl_visible_stats = 0;
107 #endif /* VISIBLE_STATS */
109 /* **************************************************************** */
111 /* Completion matching, from readline's point of view. */
113 /* **************************************************************** */
115 /* Pointer to the generator function for completion_matches ().
116 NULL means to use filename_entry_function (), the default filename
118 Function *rl_completion_entry_function = (Function *)NULL;
120 /* Pointer to alternative function to create matches.
121 Function is called with TEXT, START, and END.
122 START and END are indices in RL_LINE_BUFFER saying what the boundaries
124 If this function exists and returns NULL then call the value of
125 rl_completion_entry_function to try to match, otherwise use the
126 array of strings returned. */
127 CPPFunction *rl_attempted_completion_function = (CPPFunction *)NULL;
129 /* Local variable states what happened during the last completion attempt. */
130 static int completion_changed_buffer = 0;
132 /* Complete the word at or before point. You have supplied the function
133 that does the initial simple matching selection algorithm (see
134 completion_matches ()). The default is to do filename completion. */
136 rl_complete (ignore, invoking_key)
137 int ignore, invoking_key;
139 if (rl_last_func == rl_complete && !completion_changed_buffer)
140 rl_complete_internal ('?');
142 rl_complete_internal (TAB);
145 /* List the possible completions. See description of rl_complete (). */
146 rl_possible_completions (ignore, invoking_key)
147 int ignore, invoking_key;
149 rl_complete_internal ('?');
152 rl_insert_completions (ignore, invoking_key)
153 int ignore, invoking_key;
155 rl_complete_internal ('*');
158 /* The user must press "y" or "n". Non-zero return means "y" pressed. */
166 if (c == 'y' || c == 'Y')
168 if (c == 'n' || c == 'N')
176 /* Up to this many items will be displayed in response to a
177 possible-completions call. After that, we ask the user if
178 she is sure she wants to see them all. */
179 int rl_completion_query_items = 100;
181 /* The basic list of characters that signal a break between words for the
182 completer routine. The contents of this variable is what breaks words
183 in the shell, i.e. " \t\n\"\\'`@$><=" */
184 char *rl_basic_word_break_characters = " \t\n\"\\'`@$><=;|&{(";
186 /* The list of characters that signal a break between words for
187 rl_complete_internal. The default list is the contents of
188 rl_basic_word_break_characters. */
189 char *rl_completer_word_break_characters = (char *)NULL;
191 /* List of characters which can be used to quote a substring of the line.
192 Completion occurs on the entire substring, and within the substring
193 rl_completer_word_break_characters are treated as any other character,
194 unless they also appear within this list. */
195 char *rl_completer_quote_characters = (char *)NULL;
197 /* List of characters that are word break characters, but should be left
198 in TEXT when it is passed to the completion function. The shell uses
199 this to help determine what kind of completing to do. */
200 char *rl_special_prefixes = (char *)NULL;
202 /* If non-zero, then disallow duplicates in the matches. */
203 int rl_ignore_completion_duplicates = 1;
205 /* Non-zero means that the results of the matches are to be treated
206 as filenames. This is ALWAYS zero on entry, and can only be changed
207 within a completion entry finder function. */
208 int rl_filename_completion_desired = 0;
210 /* This function, if defined, is called by the completer when real
211 filename completion is done, after all the matching names have been
212 generated. It is passed a (char**) known as matches in the code below.
213 It consists of a NULL-terminated array of pointers to potential
214 matching strings. The 1st element (matches[0]) is the maximal
215 substring that is common to all matches. This function can re-arrange
216 the list of matches as required, but all elements of the array must be
217 free()'d if they are deleted. The main intent of this function is
218 to implement FIGNORE a la SunOS csh. */
219 Function *rl_ignore_some_completions_function = (Function *)NULL;
222 /* A function to strip quotes that are not protected by backquotes. It
223 allows single quotes to appear within double quotes, and vice versa.
224 It should be smarter. It's fairly shell-specific, hence the SHELL
225 definition wrapper. */
227 _delete_quotes (text)
234 ret = xmalloc (l + 1);
235 for (quoted = 0, p = text, r = ret; p && *p; p++)
237 /* Allow backslash-quoted characters to pass through unscathed. */
241 if (quoted && *p == quoted)
247 if (quoted == 0 && (*p == '\'' || *p == '"'))
259 /* Complete the word at or before point.
260 WHAT_TO_DO says what to do with the completion.
261 `?' means list the possible completions.
262 TAB means do standard completion.
263 `*' means insert all of the possible completions. */
264 rl_complete_internal (what_to_do)
269 int start, scan, end, delimiter = 0, pass_next;
270 char *text, *saved_line_buffer;
272 char quote_char = '\0';
278 saved_line_buffer = savestring (rl_line_buffer);
280 saved_line_buffer = (char *)NULL;
282 if (rl_completion_entry_function)
283 our_func = rl_completion_entry_function;
285 our_func = (Function *)filename_completion_function;
287 /* Only the completion entry function can change this. */
288 rl_filename_completion_desired = 0;
290 /* We now look backwards for the start of a filename/variable word. */
295 if (rl_completer_quote_characters)
297 /* We have a list of characters which can be used in pairs to
298 quote substrings for the completer. Try to find the start
299 of an unclosed quoted substring. */
300 /* FOUND_QUOTE is set so we know what kind of quotes we found. */
301 for (scan = pass_next = 0; scan < end; scan++)
309 if (rl_line_buffer[scan] == '\\')
315 if (quote_char != '\0')
317 /* Ignore everything until the matching close quote char. */
318 if (rl_line_buffer[scan] == quote_char)
320 /* Found matching close. Abandon this substring. */
325 else if (strchr (rl_completer_quote_characters, rl_line_buffer[scan]))
327 /* Found start of a quoted substring. */
328 quote_char = rl_line_buffer[scan];
331 if (quote_char == '\'')
333 else if (quote_char == '"')
343 /* We didn't find an unclosed quoted substring up which to do
344 completion, so use the word break characters to find the
345 substring on which to complete. */
349 /* Don't let word break characters in quoted substrings break
350 words for the completer. */
353 if (strchr (rl_completer_quote_characters, rl_line_buffer[rl_point]))
362 if (strchr (rl_completer_word_break_characters, rl_line_buffer[rl_point]))
367 /* If we are at a word break, then advance past it. */
368 if (strchr (rl_completer_word_break_characters, rl_line_buffer[rl_point]))
370 /* If the character that caused the word break was a quoting
371 character, then remember it as the delimiter. */
372 if (strchr ("\"'", rl_line_buffer[rl_point]) && (end - rl_point) > 1)
373 delimiter = rl_line_buffer[rl_point];
375 /* If the character isn't needed to determine something special
376 about what kind of completion to perform, then advance past it. */
377 if (!rl_special_prefixes ||
378 !strchr (rl_special_prefixes, rl_line_buffer[rl_point]))
383 /* At this point, we know we have an open quote if quote_char != '\0'. */
386 text = rl_copy_text (start, end);
388 /* If the user wants to TRY to complete, but then wants to give
389 up and use the default completion function, they set the
390 variable rl_attempted_completion_function. */
391 if (rl_attempted_completion_function)
393 matches = (*rl_attempted_completion_function) (text, start, end);
397 /* XXX - This is questionable code. - XXX */
398 if (matches == (char **)-1)
399 matches = (char **)NULL;
400 our_func = (Function *)NULL;
401 goto after_usual_completion;
406 /* Beware -- we're stripping the quotes here. Do this only if we know
407 we are doing filename completion. */
408 if (found_quote && our_func == (Function *)filename_completion_function)
410 /* delete single and double quotes */
411 replacement = _delete_quotes (text);
414 replacement = (char *)0;
418 matches = completion_matches (text, our_func);
420 after_usual_completion:
429 /* It seems to me that in all the cases we handle we would like
430 to ignore duplicate possiblilities. Scan for the text to
431 insert being identical to the other completions. */
432 if (rl_ignore_completion_duplicates)
438 /* Sort the items. */
439 /* It is safe to sort this array, because the lowest common
440 denominator found in matches[0] will remain in place. */
441 for (i = 0; matches[i]; i++);
442 qsort (matches, i, sizeof (char *), compare_strings);
444 /* Remember the lowest common denominator for it may be unique. */
445 lowest_common = savestring (matches[0]);
447 for (i = 0; matches[i + 1]; i++)
449 if (strcmp (matches[i], matches[i + 1]) == 0)
452 matches[i] = (char *)&dead_slot;
458 /* We have marked all the dead slots with (char *)&dead_slot.
459 Copy all the non-dead entries into a new array. */
462 (char **)xmalloc ((3 + newlen) * sizeof (char *));
464 for (i = 1, j = 1; matches[i]; i++)
466 if (matches[i] != (char *)&dead_slot)
467 temp_array[j++] = matches[i];
470 temp_array[j] = (char *)NULL;
472 if (matches[0] != (char *)&dead_slot)
477 matches = temp_array;
480 /* Place the lowest common denominator back in [0]. */
481 matches[0] = lowest_common;
483 /* If there is one string left, and it is identical to the
484 lowest common denominator, then the LCD is the string to
486 if (j == 2 && strcmp (matches[0], matches[1]) == 0)
489 matches[1] = (char *)NULL;
496 /* If we are matching filenames, then here is our chance to
497 do clever processing by re-examining the list. Call the
498 ignore function with the array as a parameter. It can
499 munge the array, deleting matches as it desires. */
500 if (rl_ignore_some_completions_function &&
501 our_func == (Function *)filename_completion_function)
502 (void)(*rl_ignore_some_completions_function)(matches);
504 /* If we are doing completion on quoted substrings, and any matches
505 contain any of the completer_word_break_characters, then auto-
506 matically prepend the substring with a quote character (just pick
507 the first one from the list of such) if it does not already begin
508 with a quote string. FIXME: Need to remove any such automatically
509 inserted quote character when it no longer is necessary, such as
510 if we change the string we are completing on and the new set of
511 matches don't require a quoted substring. */
512 replacement = matches[0];
514 if (matches[0] && rl_completer_quote_characters && !quote_char &&
515 rl_filename_completion_desired)
519 do_replace = NO_MATCH;
521 /* If there is a single match, see if we need to quote it.
522 This also checks whether the common prefix of several
523 matches needs to be quoted. If the common prefix should
524 not be checked, add !matches[1] to the if clause. */
525 if (rl_strpbrk (matches[0], rl_completer_word_break_characters))
526 do_replace = matches[1] ? MULT_MATCH : SINGLE_MATCH;
528 if (do_replace != NO_MATCH)
531 /* XXX - experimental */
532 /* Quote the replacement, since we found an
533 embedded word break character in a potential
537 extern char *double_quote (); /* in builtins/common.c */
539 /* If DO_REPLACE == MULT_MATCH, it means that there is
540 more than one match. In this case, we do not add
541 the closing quote or attempt to perform tilde
542 expansion. If DO_REPLACE == SINGLE_MATCH, we try
543 to perform tilde expansion, because double quotes
544 inhibit tilde expansion by the shell. */
547 if (mtext[0] == '~' && do_replace == SINGLE_MATCH)
548 mtext = tilde_expand (matches[0]);
549 rtext = double_quote (mtext);
550 if (mtext != matches[0])
553 rlen = strlen (rtext);
554 replacement = (char *)alloca (rlen + 1);
555 strcpy (replacement, rtext);
556 if (do_replace == MULT_MATCH)
557 replacement[rlen - 1] = '\0';
560 /* Found an embedded word break character in a potential
561 match, so we need to prepend a quote character if we
562 are replacing the completion string. */
563 replacement = (char *)alloca (strlen (matches[0]) + 2);
564 quote_char = *rl_completer_quote_characters;
565 *replacement = quote_char;
566 strcpy (replacement + 1, matches[0]);
573 rl_delete_text (start, rl_point);
575 rl_insert_text (replacement);
578 /* If there are more matches, ring the bell to indicate.
579 If this was the only match, and we are hacking files,
580 check the file to see if it was a directory. If so,
581 add a '/' to the name. If not, and we are at the end
582 of the line, then add a space. */
585 if (rl_editing_mode != vi_mode)
586 ding (); /* There are other matches remaining. */
591 int temp_string_index = 0;
594 temp_string[temp_string_index++] = quote_char;
596 temp_string[temp_string_index++] = delimiter ? delimiter : ' ';
597 temp_string[temp_string_index++] = '\0';
599 if (rl_filename_completion_desired)
602 char *filename = tilde_expand (matches[0]);
604 if ((stat (filename, &finfo) == 0) &&
605 S_ISDIR (finfo.st_mode))
607 if (rl_line_buffer[rl_point] != '/')
608 rl_insert_text ("/");
612 if (rl_point == rl_end)
613 rl_insert_text (temp_string);
619 if (rl_point == rl_end)
620 rl_insert_text (temp_string);
629 rl_delete_text (start, rl_point);
631 rl_begin_undo_group ();
636 rl_insert_text (matches[i++]);
637 rl_insert_text (" ");
642 rl_insert_text (matches[0]);
643 rl_insert_text (" ");
645 rl_end_undo_group ();
651 int len, count, limit, max = 0;
654 /* Handle simple case first. What if there is only one answer? */
657 char *temp = (char *)NULL;
659 if (rl_filename_completion_desired)
660 temp = strrchr (matches[0], '/');
668 fprintf (rl_outstream, "%s", temp);
669 #if defined (VISIBLE_STATS)
670 if (rl_filename_completion_desired && rl_visible_stats)
674 extension_char = stat_char (matches[0]);
676 putc (extension_char, rl_outstream);
678 #endif /* VISIBLE_STATS */
683 /* There is more than one answer. Find out how many there are,
684 and find out what the maximum printed length of a single entry
686 for (i = 1; matches[i]; i++)
691 /* If we are hacking filenames, then only count the characters
692 after the last slash in the pathname. */
693 if (rl_filename_completion_desired)
694 temp = strrchr (matches[i], '/');
703 name_length = strlen (temp);
705 if (name_length > max)
711 /* If there are many items, then ask the user if she
712 really wants to see them all. */
713 if (len >= rl_completion_query_items)
716 fprintf (rl_outstream,
717 "There are %d possibilities. Do you really", len);
719 fprintf (rl_outstream, "wish to see them all? (y or n)");
720 fflush (rl_outstream);
728 /* How many items of MAX length can we fit in the screen window? */
730 limit = screenwidth / max;
731 if (limit != 1 && (limit * max == screenwidth))
734 /* Avoid a possible floating exception. If max > screenwidth,
735 limit will be 0 and a divide-by-zero fault will result. */
739 /* How many iterations of the printing loop? */
740 count = (len + (limit - 1)) / limit;
742 /* Watch out for special case. If LEN is less than LIMIT, then
743 just do the inner printing loop. */
747 /* Sort the items if they are not already sorted. */
748 if (!rl_ignore_completion_duplicates)
749 qsort (matches, len, sizeof (char *), compare_strings);
751 /* Print the sorted items, up-and-down alphabetically, like
755 for (i = 1; i < count + 1; i++)
757 for (j = 0, l = i; j < limit; j++)
759 if (l > len || !matches[l])
765 char *temp = (char *)NULL;
768 if (rl_filename_completion_desired)
769 temp = strrchr (matches[l], '/');
776 printed_length = strlen (temp);
777 fprintf (rl_outstream, "%s", temp);
779 #if defined (VISIBLE_STATS)
780 if (rl_filename_completion_desired &&
785 extension_char = stat_char (matches[l]);
789 putc (extension_char, rl_outstream);
793 #endif /* VISIBLE_STATS */
797 for (k = 0; k < max - printed_length; k++)
798 putc (' ', rl_outstream);
812 fprintf (stderr, "\r\nreadline: bad value for what_to_do in rl_complete\n");
816 for (i = 0; matches[i]; i++)
821 /* Check to see if the line has changed through all of this manipulation. */
822 if (saved_line_buffer)
824 if (strcmp (rl_line_buffer, saved_line_buffer) != 0)
825 completion_changed_buffer = 1;
827 completion_changed_buffer = 0;
829 free (saved_line_buffer);
833 #if defined (VISIBLE_STATS)
834 /* Return the character which best describes FILENAME.
835 `@' for symbolic links
846 if (stat (filename, &finfo) == -1)
849 if (S_ISDIR (finfo.st_mode))
851 #if defined (S_ISLNK)
852 else if (S_ISLNK (finfo.st_mode))
855 #if defined (S_ISSOCK)
856 else if (S_ISSOCK (finfo.st_mode))
858 #endif /* S_ISSOCK */
859 else if (S_ISREG (finfo.st_mode))
861 if (access (filename, X_OK) == 0)
866 #endif /* VISIBLE_STATS */
868 /* Stupid comparison routine for qsort () ing strings. */
870 compare_strings (s1, s2)
873 return (strcmp (*s1, *s2));
876 /* A completion function for usernames.
877 TEXT contains a partial username preceded by a random
878 character (usually `~'). */
880 username_completion_function (text, state)
884 #if defined (MINIMAL)
887 static char *username = (char *)NULL;
888 static struct passwd *entry;
889 static int namelen, first_char, first_char_loc;
898 if (first_char == '~')
903 username = savestring (&text[first_char_loc]);
904 namelen = strlen (username);
908 while (entry = getpwent ())
910 if (strncmp (username, entry->pw_name, namelen) == 0)
917 return ((char *)NULL);
921 char *value = (char *)xmalloc (2 + strlen (entry->pw_name));
925 strcpy (value + first_char_loc, entry->pw_name);
927 if (first_char == '~')
928 rl_filename_completion_desired = 1;
932 #endif /* !MINIMAL */
935 /* **************************************************************** */
939 /* **************************************************************** */
941 /* Non-zero means that case is not significant in completion. */
942 int completion_case_fold = 0;
944 /* Return an array of (char *) which is a list of completions for TEXT.
945 If there are no completions, return a NULL pointer.
946 The first entry in the returned array is the substitution for TEXT.
947 The remaining entries are the possible completions.
948 The array is terminated with a NULL pointer.
950 ENTRY_FUNCTION is a function of two args, and returns a (char *).
951 The first argument is TEXT.
952 The second is a state argument; it should be zero on the first call, and
953 non-zero on subsequent calls. It returns a NULL pointer to the caller
954 when there are no more matches.
957 completion_matches (text, entry_function)
959 CPFunction *entry_function;
961 /* Number of slots in match_list. */
964 /* The list of matches. */
966 (char **)xmalloc (((match_list_size = 10) + 1) * sizeof (char *));
968 /* Number of matches actually found. */
971 /* Temporary string binder. */
974 match_list[1] = (char *)NULL;
976 while (string = (*entry_function) (text, matches))
978 if (matches + 1 == match_list_size)
979 match_list = (char **)xrealloc
980 (match_list, ((match_list_size += 10) + 1) * sizeof (char *));
982 match_list[++matches] = string;
983 match_list[matches + 1] = (char *)NULL;
986 /* If there were any matches, then look through them finding out the
987 lowest common denominator. That then becomes match_list[0]. */
991 int low = 100000; /* Count of max-matched characters. */
993 /* If only one match, just use that. */
996 match_list[0] = match_list[1];
997 match_list[1] = (char *)NULL;
1001 /* Otherwise, compare each member of the list with
1002 the next, finding out where they stop matching. */
1006 register int c1, c2, si;
1008 if (completion_case_fold)
1011 (c1 = to_lower(match_list[i][si])) &&
1012 (c2 = to_lower(match_list[i + 1][si]));
1014 if (c1 != c2) break;
1019 (c1 = match_list[i][si]) &&
1020 (c2 = match_list[i + 1][si]);
1022 if (c1 != c2) break;
1025 if (low > si) low = si;
1028 match_list[0] = (char *)xmalloc (low + 1);
1029 strncpy (match_list[0], match_list[1], low);
1030 match_list[0][low] = '\0';
1033 else /* There were no matches. */
1036 match_list = (char **)NULL;
1038 return (match_list);
1041 /* Okay, now we write the entry_function for filename completion. In the
1042 general case. Note that completion in the shell is a little different
1043 because of all the pathnames that must be followed when looking up the
1044 completion for a command. */
1046 filename_completion_function (text, state)
1051 static DIR *directory;
1052 static char *filename = (char *)NULL;
1053 static char *dirname = (char *)NULL;
1054 static char *users_dirname = (char *)NULL;
1055 static int filename_len;
1057 dirent *entry = (dirent *)NULL;
1059 /* If we don't have any state, then do some initialization. */
1064 if (dirname) free (dirname);
1065 if (filename) free (filename);
1066 if (users_dirname) free (users_dirname);
1068 filename = savestring (text);
1069 if (!*text) text = ".";
1070 dirname = savestring (text);
1072 temp = strrchr (dirname, '/');
1076 strcpy (filename, ++temp);
1080 strcpy (dirname, ".");
1082 /* We aren't done yet. We also support the "~user" syntax. */
1084 /* Save the version of the directory that the user typed. */
1085 users_dirname = savestring (dirname);
1089 temp_dirname = tilde_expand (dirname);
1091 dirname = temp_dirname;
1093 if (rl_symbolic_link_hook)
1094 (*rl_symbolic_link_hook) (&dirname);
1096 directory = opendir (dirname);
1097 filename_len = strlen (filename);
1099 rl_filename_completion_desired = 1;
1102 /* At this point we should entertain the possibility of hacking wildcarded
1103 filenames, like /usr/man/man<WILD>/te<TAB>. If the directory name
1104 contains globbing characters, then build an array of directories, and
1105 then map over that list while completing. */
1106 /* *** UNIMPLEMENTED *** */
1108 /* Now that we have some state, we can read the directory. */
1110 while (directory && (entry = readdir (directory)))
1112 /* Special case for no filename.
1113 All entries except "." and ".." match. */
1116 if ((strcmp (entry->d_name, ".") != 0) &&
1117 (strcmp (entry->d_name, "..") != 0))
1122 /* Otherwise, if these match upto the length of filename, then
1124 if (((int)D_NAMLEN (entry)) >= filename_len &&
1125 (entry->d_name[0] == filename[0]) &&
1126 (strncmp (filename, entry->d_name, filename_len) == 0))
1137 closedir (directory);
1138 directory = (DIR *)NULL;
1144 dirname = (char *)NULL;
1149 filename = (char *)NULL;
1153 free (users_dirname);
1154 users_dirname = (char *)NULL;
1157 return (char *)NULL;
1163 if (dirname && (strcmp (dirname, ".") != 0))
1165 if (rl_complete_with_tilde_expansion && *users_dirname == '~')
1167 int dirlen = strlen (dirname);
1168 temp = (char *)xmalloc (2 + dirlen + D_NAMLEN (entry));
1169 strcpy (temp, dirname);
1170 /* Canonicalization cuts off any final slash present. We need
1172 if (dirname[dirlen - 1] != '/')
1175 temp[dirlen + 1] = '\0';
1181 xmalloc (1 + strlen (users_dirname) + D_NAMLEN (entry));
1182 strcpy (temp, users_dirname);
1185 strcat (temp, entry->d_name);
1189 temp = (savestring (entry->d_name));
1196 /* A function for simple tilde expansion. */
1198 rl_tilde_expand (ignore, key)
1201 register int start, end;
1207 if (rl_point == rl_end && rl_line_buffer[rl_point] == '~')
1209 homedir = tilde_expand ("~");
1212 else if (rl_line_buffer[start] != '~')
1214 for (; !whitespace (rl_line_buffer[start]) && start >= 0; start--);
1223 while (!whitespace (rl_line_buffer[end]) && end < rl_end);
1225 if (whitespace (rl_line_buffer[end]) || end >= rl_end)
1228 /* If the first character of the current word is a tilde, perform
1229 tilde expansion and insert the result. If not a tilde, do
1231 if (rl_line_buffer[start] == '~')
1236 len = end - start + 1;
1237 temp = (char *)alloca (len + 1);
1238 strncpy (temp, rl_line_buffer + start, len);
1240 homedir = tilde_expand (temp);
1243 rl_begin_undo_group ();
1244 rl_delete_text (start, end + 1);
1246 rl_insert_text (homedir);
1247 rl_end_undo_group ();
1253 /* Find the first occurrence in STRING1 of any character from STRING2.
1254 Return a pointer to the character in STRING1. */
1256 rl_strpbrk (string1, string2)
1257 char *string1, *string2;
1259 register char *scan;
1261 for (; *string1; string1++)
1263 for (scan = string2; *scan; scan++)
1265 if (*string1 == *scan)
1271 return ((char *)NULL);
1274 #if defined (STATIC_MALLOC)
1276 /* **************************************************************** */
1278 /* xmalloc and xrealloc () */
1280 /* **************************************************************** */
1282 static void memory_error_and_abort ();
1288 char *temp = (char *)malloc (bytes);
1291 memory_error_and_abort ();
1296 xrealloc (pointer, bytes)
1303 temp = (char *)malloc (bytes);
1305 temp = (char *)realloc (pointer, bytes);
1308 memory_error_and_abort ();
1314 memory_error_and_abort ()
1316 fprintf (stderr, "readline: Out of virtual memory!\n");
1319 #endif /* STATIC_MALLOC */