1320 lines
34 KiB
C
1320 lines
34 KiB
C
/* complete.c -- filename completion for readline. */
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/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
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This file is part of the GNU Readline Library, a library for
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reading lines of text with interactive input and history editing.
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The GNU Readline Library is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 1, or
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(at your option) any later version.
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The GNU Readline Library is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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The GNU General Public License is often shipped with GNU software, and
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is generally kept in a file called COPYING or LICENSE. If you do not
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have a copy of the license, write to the Free Software Foundation,
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675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "sysdep.h"
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#include <stdio.h>
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#include <fcntl.h>
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#if !defined (NO_SYS_FILE)
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# include <sys/file.h>
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#endif /* !NO_SYS_FILE */
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#include <errno.h>
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/* Not all systems declare ERRNO in errno.h... and some systems #define it! */
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#if !defined (errno)
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extern int errno;
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#endif /* !errno */
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/* These next are for filename completion. Perhaps this belongs
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in a different place. */
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#if !defined(__MSDOS__) && !defined(_MSC_VER)
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#include <pwd.h>
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#endif /* __MSDOS__ */
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#if defined (USG) && !defined (isc386) && !defined (sgi)
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extern struct passwd *getpwuid (), *getpwent ();
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#endif
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#if defined (isc386) && !defined (__STDC__) && defined (_POSIX_SOURCE)
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extern struct passwd *getpwent ();
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#endif
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/* Included by <fcntl.h> on some systems, but not SCO, so include it here. */
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#include <sys/stat.h>
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/* System-specific feature definitions and include files. */
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#include "rldefs.h"
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/* Some standard library routines. */
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#include "readline.h"
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/* Possible values for do_replace in rl_complete_internal. */
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#define NO_MATCH 0
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#define SINGLE_MATCH 1
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#define MULT_MATCH 2
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#if !defined (strchr) && !defined (__STDC__)
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extern char *strchr (), *strrchr ();
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#endif /* !strchr && !__STDC__ */
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extern char *tilde_expand ();
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extern char *rl_copy_text ();
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extern Function *rl_last_func;
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extern int rl_editing_mode;
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extern int screenwidth;
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/* Forward declarations for functions defined and used in this file. */
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char *filename_completion_function ();
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char **completion_matches ();
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static int compare_strings ();
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static char *rl_strpbrk ();
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#if defined (STATIC_MALLOC)
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static char *xmalloc (), *xrealloc ();
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#else
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extern char *xmalloc (), *xrealloc ();
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#endif /* STATIC_MALLOC */
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/* If non-zero, then this is the address of a function to call when
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completing on a directory name. The function is called with
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the address of a string (the current directory name) as an arg. */
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Function *rl_symbolic_link_hook = (Function *)NULL;
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/* Non-zero means readline completion functions perform tilde expansion. */
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int rl_complete_with_tilde_expansion = 0;
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#define VISIBLE_STATS
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#if defined (VISIBLE_STATS)
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# if !defined (X_OK)
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# define X_OK 1
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# endif
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static int stat_char ();
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/* Non-zero means add an additional character to each filename displayed
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during listing completion iff rl_filename_completion_desired which helps
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to indicate the type of file being listed. */
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int rl_visible_stats = 0;
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#endif /* VISIBLE_STATS */
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/* **************************************************************** */
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/* */
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/* Completion matching, from readline's point of view. */
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/* */
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/* **************************************************************** */
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/* Pointer to the generator function for completion_matches ().
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NULL means to use filename_entry_function (), the default filename
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completer. */
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Function *rl_completion_entry_function = (Function *)NULL;
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/* Pointer to alternative function to create matches.
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Function is called with TEXT, START, and END.
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START and END are indices in RL_LINE_BUFFER saying what the boundaries
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of TEXT are.
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If this function exists and returns NULL then call the value of
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rl_completion_entry_function to try to match, otherwise use the
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array of strings returned. */
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CPPFunction *rl_attempted_completion_function = (CPPFunction *)NULL;
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/* Local variable states what happened during the last completion attempt. */
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static int completion_changed_buffer = 0;
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/* Complete the word at or before point. You have supplied the function
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that does the initial simple matching selection algorithm (see
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completion_matches ()). The default is to do filename completion. */
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rl_complete (ignore, invoking_key)
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int ignore, invoking_key;
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{
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if (rl_last_func == rl_complete && !completion_changed_buffer)
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rl_complete_internal ('?');
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else
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rl_complete_internal (TAB);
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}
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/* List the possible completions. See description of rl_complete (). */
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rl_possible_completions (ignore, invoking_key)
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int ignore, invoking_key;
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{
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rl_complete_internal ('?');
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}
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rl_insert_completions (ignore, invoking_key)
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int ignore, invoking_key;
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{
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rl_complete_internal ('*');
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}
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/* The user must press "y" or "n". Non-zero return means "y" pressed. */
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get_y_or_n ()
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{
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int c;
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for (;;)
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{
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c = rl_read_key ();
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if (c == 'y' || c == 'Y')
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return (1);
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if (c == 'n' || c == 'N')
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return (0);
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if (c == ABORT_CHAR)
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rl_abort ();
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ding ();
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}
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}
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/* Up to this many items will be displayed in response to a
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possible-completions call. After that, we ask the user if
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she is sure she wants to see them all. */
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int rl_completion_query_items = 100;
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/* The basic list of characters that signal a break between words for the
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completer routine. The contents of this variable is what breaks words
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in the shell, i.e. " \t\n\"\\'`@$><=" */
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char *rl_basic_word_break_characters = " \t\n\"\\'`@$><=;|&{(";
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/* The list of characters that signal a break between words for
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rl_complete_internal. The default list is the contents of
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rl_basic_word_break_characters. */
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char *rl_completer_word_break_characters = (char *)NULL;
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/* List of characters which can be used to quote a substring of the line.
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Completion occurs on the entire substring, and within the substring
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rl_completer_word_break_characters are treated as any other character,
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unless they also appear within this list. */
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char *rl_completer_quote_characters = (char *)NULL;
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/* List of characters that are word break characters, but should be left
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in TEXT when it is passed to the completion function. The shell uses
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this to help determine what kind of completing to do. */
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char *rl_special_prefixes = (char *)NULL;
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/* If non-zero, then disallow duplicates in the matches. */
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int rl_ignore_completion_duplicates = 1;
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/* Non-zero means that the results of the matches are to be treated
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as filenames. This is ALWAYS zero on entry, and can only be changed
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within a completion entry finder function. */
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int rl_filename_completion_desired = 0;
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/* This function, if defined, is called by the completer when real
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filename completion is done, after all the matching names have been
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generated. It is passed a (char**) known as matches in the code below.
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It consists of a NULL-terminated array of pointers to potential
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matching strings. The 1st element (matches[0]) is the maximal
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substring that is common to all matches. This function can re-arrange
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the list of matches as required, but all elements of the array must be
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free()'d if they are deleted. The main intent of this function is
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to implement FIGNORE a la SunOS csh. */
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Function *rl_ignore_some_completions_function = (Function *)NULL;
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#if defined (SHELL)
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/* A function to strip quotes that are not protected by backquotes. It
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allows single quotes to appear within double quotes, and vice versa.
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It should be smarter. It's fairly shell-specific, hence the SHELL
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definition wrapper. */
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static char *
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_delete_quotes (text)
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char *text;
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{
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char *ret, *p, *r;
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int l, quoted;
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l = strlen (text);
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ret = xmalloc (l + 1);
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for (quoted = 0, p = text, r = ret; p && *p; p++)
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{
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/* Allow backslash-quoted characters to pass through unscathed. */
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if (*p == '\\')
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continue;
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/* Close quote. */
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if (quoted && *p == quoted)
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{
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quoted = 0;
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continue;
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}
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/* Open quote. */
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if (quoted == 0 && (*p == '\'' || *p == '"'))
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{
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quoted = *p;
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continue;
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}
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*r++ = *p;
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}
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*r = '\0';
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return ret;
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}
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#endif /* SHELL */
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/* Complete the word at or before point.
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WHAT_TO_DO says what to do with the completion.
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`?' means list the possible completions.
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TAB means do standard completion.
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`*' means insert all of the possible completions. */
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rl_complete_internal (what_to_do)
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int what_to_do;
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{
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char **matches;
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Function *our_func;
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int start, scan, end, delimiter = 0, pass_next;
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char *text, *saved_line_buffer;
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char *replacement;
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char quote_char = '\0';
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#if defined (SHELL)
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int found_quote = 0;
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#endif
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if (rl_line_buffer)
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saved_line_buffer = savestring (rl_line_buffer);
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else
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saved_line_buffer = (char *)NULL;
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if (rl_completion_entry_function)
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our_func = rl_completion_entry_function;
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else
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our_func = (Function *)filename_completion_function;
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/* Only the completion entry function can change this. */
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rl_filename_completion_desired = 0;
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/* We now look backwards for the start of a filename/variable word. */
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end = rl_point;
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if (rl_point)
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{
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if (rl_completer_quote_characters)
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{
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/* We have a list of characters which can be used in pairs to
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quote substrings for the completer. Try to find the start
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of an unclosed quoted substring. */
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/* FOUND_QUOTE is set so we know what kind of quotes we found. */
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for (scan = pass_next = 0; scan < end; scan++)
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{
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if (pass_next)
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{
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pass_next = 0;
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continue;
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}
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if (rl_line_buffer[scan] == '\\')
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{
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pass_next = 1;
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continue;
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}
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if (quote_char != '\0')
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{
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/* Ignore everything until the matching close quote char. */
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if (rl_line_buffer[scan] == quote_char)
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{
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/* Found matching close. Abandon this substring. */
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quote_char = '\0';
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rl_point = end;
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}
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}
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else if (strchr (rl_completer_quote_characters, rl_line_buffer[scan]))
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{
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/* Found start of a quoted substring. */
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quote_char = rl_line_buffer[scan];
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rl_point = scan + 1;
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#if defined (SHELL)
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if (quote_char == '\'')
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found_quote |= 1;
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else if (quote_char == '"')
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found_quote |= 2;
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#endif
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}
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}
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}
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if (rl_point == end)
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{
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int quoted = 0;
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/* We didn't find an unclosed quoted substring up which to do
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completion, so use the word break characters to find the
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substring on which to complete. */
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while (--rl_point)
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{
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#if defined (SHELL)
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/* Don't let word break characters in quoted substrings break
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words for the completer. */
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if (found_quote)
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{
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if (strchr (rl_completer_quote_characters, rl_line_buffer[rl_point]))
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{
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quoted = !quoted;
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continue;
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}
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if (quoted)
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continue;
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}
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#endif /* SHELL */
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if (strchr (rl_completer_word_break_characters, rl_line_buffer[rl_point]))
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break;
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}
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}
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/* If we are at a word break, then advance past it. */
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if (strchr (rl_completer_word_break_characters, rl_line_buffer[rl_point]))
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{
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/* If the character that caused the word break was a quoting
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character, then remember it as the delimiter. */
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if (strchr ("\"'", rl_line_buffer[rl_point]) && (end - rl_point) > 1)
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delimiter = rl_line_buffer[rl_point];
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/* If the character isn't needed to determine something special
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about what kind of completion to perform, then advance past it. */
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if (!rl_special_prefixes ||
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!strchr (rl_special_prefixes, rl_line_buffer[rl_point]))
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rl_point++;
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}
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}
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/* At this point, we know we have an open quote if quote_char != '\0'. */
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start = rl_point;
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rl_point = end;
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text = rl_copy_text (start, end);
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/* If the user wants to TRY to complete, but then wants to give
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up and use the default completion function, they set the
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variable rl_attempted_completion_function. */
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if (rl_attempted_completion_function)
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{
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matches = (*rl_attempted_completion_function) (text, start, end);
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||
|
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if (matches)
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{
|
||
/* XXX - This is questionable code. - XXX */
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if (matches == (char **)-1)
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matches = (char **)NULL;
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||
our_func = (Function *)NULL;
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||
goto after_usual_completion;
|
||
}
|
||
}
|
||
|
||
#if defined (SHELL)
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/* Beware -- we're stripping the quotes here. Do this only if we know
|
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we are doing filename completion. */
|
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if (found_quote && our_func == (Function *)filename_completion_function)
|
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{
|
||
/* delete single and double quotes */
|
||
replacement = _delete_quotes (text);
|
||
free (text);
|
||
text = replacement;
|
||
replacement = (char *)0;
|
||
}
|
||
#endif /* SHELL */
|
||
|
||
matches = completion_matches (text, our_func);
|
||
|
||
after_usual_completion:
|
||
free (text);
|
||
|
||
if (!matches)
|
||
ding ();
|
||
else
|
||
{
|
||
register int i;
|
||
|
||
/* It seems to me that in all the cases we handle we would like
|
||
to ignore duplicate possiblilities. Scan for the text to
|
||
insert being identical to the other completions. */
|
||
if (rl_ignore_completion_duplicates)
|
||
{
|
||
char *lowest_common;
|
||
int j, newlen = 0;
|
||
char dead_slot;
|
||
|
||
/* Sort the items. */
|
||
/* It is safe to sort this array, because the lowest common
|
||
denominator found in matches[0] will remain in place. */
|
||
for (i = 0; matches[i]; i++);
|
||
qsort (matches, i, sizeof (char *), compare_strings);
|
||
|
||
/* Remember the lowest common denominator for it may be unique. */
|
||
lowest_common = savestring (matches[0]);
|
||
|
||
for (i = 0; matches[i + 1]; i++)
|
||
{
|
||
if (strcmp (matches[i], matches[i + 1]) == 0)
|
||
{
|
||
free (matches[i]);
|
||
matches[i] = (char *)&dead_slot;
|
||
}
|
||
else
|
||
newlen++;
|
||
}
|
||
|
||
/* We have marked all the dead slots with (char *)&dead_slot.
|
||
Copy all the non-dead entries into a new array. */
|
||
{
|
||
char **temp_array =
|
||
(char **)xmalloc ((3 + newlen) * sizeof (char *));
|
||
|
||
for (i = 1, j = 1; matches[i]; i++)
|
||
{
|
||
if (matches[i] != (char *)&dead_slot)
|
||
temp_array[j++] = matches[i];
|
||
}
|
||
|
||
temp_array[j] = (char *)NULL;
|
||
|
||
if (matches[0] != (char *)&dead_slot)
|
||
free (matches[0]);
|
||
|
||
free (matches);
|
||
|
||
matches = temp_array;
|
||
}
|
||
|
||
/* Place the lowest common denominator back in [0]. */
|
||
matches[0] = lowest_common;
|
||
|
||
/* If there is one string left, and it is identical to the
|
||
lowest common denominator, then the LCD is the string to
|
||
insert. */
|
||
if (j == 2 && strcmp (matches[0], matches[1]) == 0)
|
||
{
|
||
free (matches[1]);
|
||
matches[1] = (char *)NULL;
|
||
}
|
||
}
|
||
|
||
switch (what_to_do)
|
||
{
|
||
case TAB:
|
||
/* If we are matching filenames, then here is our chance to
|
||
do clever processing by re-examining the list. Call the
|
||
ignore function with the array as a parameter. It can
|
||
munge the array, deleting matches as it desires. */
|
||
if (rl_ignore_some_completions_function &&
|
||
our_func == (Function *)filename_completion_function)
|
||
(void)(*rl_ignore_some_completions_function)(matches);
|
||
|
||
/* If we are doing completion on quoted substrings, and any matches
|
||
contain any of the completer_word_break_characters, then auto-
|
||
matically prepend the substring with a quote character (just pick
|
||
the first one from the list of such) if it does not already begin
|
||
with a quote string. FIXME: Need to remove any such automatically
|
||
inserted quote character when it no longer is necessary, such as
|
||
if we change the string we are completing on and the new set of
|
||
matches don't require a quoted substring. */
|
||
replacement = matches[0];
|
||
|
||
if (matches[0] && rl_completer_quote_characters && !quote_char &&
|
||
rl_filename_completion_desired)
|
||
{
|
||
int do_replace;
|
||
|
||
do_replace = NO_MATCH;
|
||
|
||
/* If there is a single match, see if we need to quote it.
|
||
This also checks whether the common prefix of several
|
||
matches needs to be quoted. If the common prefix should
|
||
not be checked, add !matches[1] to the if clause. */
|
||
if (rl_strpbrk (matches[0], rl_completer_word_break_characters))
|
||
do_replace = matches[1] ? MULT_MATCH : SINGLE_MATCH;
|
||
|
||
if (do_replace != NO_MATCH)
|
||
{
|
||
#if defined (SHELL)
|
||
/* XXX - experimental */
|
||
/* Quote the replacement, since we found an
|
||
embedded word break character in a potential
|
||
match. */
|
||
char *rtext, *mtext;
|
||
int rlen;
|
||
extern char *double_quote (); /* in builtins/common.c */
|
||
|
||
/* If DO_REPLACE == MULT_MATCH, it means that there is
|
||
more than one match. In this case, we do not add
|
||
the closing quote or attempt to perform tilde
|
||
expansion. If DO_REPLACE == SINGLE_MATCH, we try
|
||
to perform tilde expansion, because double quotes
|
||
inhibit tilde expansion by the shell. */
|
||
|
||
mtext = matches[0];
|
||
if (mtext[0] == '~' && do_replace == SINGLE_MATCH)
|
||
mtext = tilde_expand (matches[0]);
|
||
rtext = double_quote (mtext);
|
||
if (mtext != matches[0])
|
||
free (mtext);
|
||
|
||
rlen = strlen (rtext);
|
||
replacement = (char *)alloca (rlen + 1);
|
||
strcpy (replacement, rtext);
|
||
if (do_replace == MULT_MATCH)
|
||
replacement[rlen - 1] = '\0';
|
||
free (rtext);
|
||
#else /* !SHELL */
|
||
/* Found an embedded word break character in a potential
|
||
match, so we need to prepend a quote character if we
|
||
are replacing the completion string. */
|
||
replacement = (char *)alloca (strlen (matches[0]) + 2);
|
||
quote_char = *rl_completer_quote_characters;
|
||
*replacement = quote_char;
|
||
strcpy (replacement + 1, matches[0]);
|
||
#endif /* SHELL */
|
||
}
|
||
}
|
||
|
||
if (replacement)
|
||
{
|
||
rl_delete_text (start, rl_point);
|
||
rl_point = start;
|
||
rl_insert_text (replacement);
|
||
}
|
||
|
||
/* If there are more matches, ring the bell to indicate.
|
||
If this was the only match, and we are hacking files,
|
||
check the file to see if it was a directory. If so,
|
||
add a '/' to the name. If not, and we are at the end
|
||
of the line, then add a space. */
|
||
if (matches[1])
|
||
{
|
||
if (rl_editing_mode != vi_mode)
|
||
ding (); /* There are other matches remaining. */
|
||
}
|
||
else
|
||
{
|
||
char temp_string[4];
|
||
int temp_string_index = 0;
|
||
|
||
if (quote_char)
|
||
temp_string[temp_string_index++] = quote_char;
|
||
|
||
temp_string[temp_string_index++] = delimiter ? delimiter : ' ';
|
||
temp_string[temp_string_index++] = '\0';
|
||
|
||
if (rl_filename_completion_desired)
|
||
{
|
||
struct stat finfo;
|
||
char *filename = tilde_expand (matches[0]);
|
||
|
||
if ((stat (filename, &finfo) == 0) &&
|
||
S_ISDIR (finfo.st_mode))
|
||
{
|
||
if (rl_line_buffer[rl_point] != '/')
|
||
rl_insert_text ("/");
|
||
}
|
||
else
|
||
{
|
||
if (rl_point == rl_end)
|
||
rl_insert_text (temp_string);
|
||
}
|
||
free (filename);
|
||
}
|
||
else
|
||
{
|
||
if (rl_point == rl_end)
|
||
rl_insert_text (temp_string);
|
||
}
|
||
}
|
||
break;
|
||
|
||
case '*':
|
||
{
|
||
int i = 1;
|
||
|
||
rl_delete_text (start, rl_point);
|
||
rl_point = start;
|
||
rl_begin_undo_group ();
|
||
if (matches[1])
|
||
{
|
||
while (matches[i])
|
||
{
|
||
rl_insert_text (matches[i++]);
|
||
rl_insert_text (" ");
|
||
}
|
||
}
|
||
else
|
||
{
|
||
rl_insert_text (matches[0]);
|
||
rl_insert_text (" ");
|
||
}
|
||
rl_end_undo_group ();
|
||
}
|
||
break;
|
||
|
||
case '?':
|
||
{
|
||
int len, count, limit, max = 0;
|
||
int j, k, l;
|
||
|
||
/* Handle simple case first. What if there is only one answer? */
|
||
if (!matches[1])
|
||
{
|
||
char *temp = (char *)NULL;
|
||
|
||
if (rl_filename_completion_desired)
|
||
temp = strrchr (matches[0], '/');
|
||
|
||
if (!temp)
|
||
temp = matches[0];
|
||
else
|
||
temp++;
|
||
|
||
crlf ();
|
||
fprintf (rl_outstream, "%s", temp);
|
||
#if defined (VISIBLE_STATS)
|
||
if (rl_filename_completion_desired && rl_visible_stats)
|
||
{
|
||
int extension_char;
|
||
|
||
extension_char = stat_char (matches[0]);
|
||
if (extension_char)
|
||
putc (extension_char, rl_outstream);
|
||
}
|
||
#endif /* VISIBLE_STATS */
|
||
crlf ();
|
||
goto restart;
|
||
}
|
||
|
||
/* There is more than one answer. Find out how many there are,
|
||
and find out what the maximum printed length of a single entry
|
||
is. */
|
||
for (i = 1; matches[i]; i++)
|
||
{
|
||
char *temp;
|
||
int name_length;
|
||
|
||
/* If we are hacking filenames, then only count the characters
|
||
after the last slash in the pathname. */
|
||
if (rl_filename_completion_desired)
|
||
temp = strrchr (matches[i], '/');
|
||
else
|
||
temp = (char *)NULL;
|
||
|
||
if (!temp)
|
||
temp = matches[i];
|
||
else
|
||
temp++;
|
||
|
||
name_length = strlen (temp);
|
||
|
||
if (name_length > max)
|
||
max = name_length;
|
||
}
|
||
|
||
len = i - 1;
|
||
|
||
/* If there are many items, then ask the user if she
|
||
really wants to see them all. */
|
||
if (len >= rl_completion_query_items)
|
||
{
|
||
crlf ();
|
||
fprintf (rl_outstream,
|
||
"There are %d possibilities. Do you really", len);
|
||
crlf ();
|
||
fprintf (rl_outstream, "wish to see them all? (y or n)");
|
||
fflush (rl_outstream);
|
||
if (!get_y_or_n ())
|
||
{
|
||
crlf ();
|
||
goto restart;
|
||
}
|
||
}
|
||
|
||
/* How many items of MAX length can we fit in the screen window? */
|
||
max += 2;
|
||
limit = screenwidth / max;
|
||
if (limit != 1 && (limit * max == screenwidth))
|
||
limit--;
|
||
|
||
/* Avoid a possible floating exception. If max > screenwidth,
|
||
limit will be 0 and a divide-by-zero fault will result. */
|
||
if (limit == 0)
|
||
limit = 1;
|
||
|
||
/* How many iterations of the printing loop? */
|
||
count = (len + (limit - 1)) / limit;
|
||
|
||
/* Watch out for special case. If LEN is less than LIMIT, then
|
||
just do the inner printing loop. */
|
||
if (len < limit)
|
||
count = 1;
|
||
|
||
/* Sort the items if they are not already sorted. */
|
||
if (!rl_ignore_completion_duplicates)
|
||
qsort (matches, len, sizeof (char *), compare_strings);
|
||
|
||
/* Print the sorted items, up-and-down alphabetically, like
|
||
ls might. */
|
||
crlf ();
|
||
|
||
for (i = 1; i < count + 1; i++)
|
||
{
|
||
for (j = 0, l = i; j < limit; j++)
|
||
{
|
||
if (l > len || !matches[l])
|
||
{
|
||
break;
|
||
}
|
||
else
|
||
{
|
||
char *temp = (char *)NULL;
|
||
int printed_length;
|
||
|
||
if (rl_filename_completion_desired)
|
||
temp = strrchr (matches[l], '/');
|
||
|
||
if (!temp)
|
||
temp = matches[l];
|
||
else
|
||
temp++;
|
||
|
||
printed_length = strlen (temp);
|
||
fprintf (rl_outstream, "%s", temp);
|
||
|
||
#if defined (VISIBLE_STATS)
|
||
if (rl_filename_completion_desired &&
|
||
rl_visible_stats)
|
||
{
|
||
int extension_char;
|
||
|
||
extension_char = stat_char (matches[l]);
|
||
|
||
if (extension_char)
|
||
{
|
||
putc (extension_char, rl_outstream);
|
||
printed_length++;
|
||
}
|
||
}
|
||
#endif /* VISIBLE_STATS */
|
||
|
||
if (j + 1 < limit)
|
||
{
|
||
for (k = 0; k < max - printed_length; k++)
|
||
putc (' ', rl_outstream);
|
||
}
|
||
}
|
||
l += count;
|
||
}
|
||
crlf ();
|
||
}
|
||
restart:
|
||
|
||
rl_on_new_line ();
|
||
}
|
||
break;
|
||
|
||
default:
|
||
fprintf (stderr, "\r\nreadline: bad value for what_to_do in rl_complete\n");
|
||
abort ();
|
||
}
|
||
|
||
for (i = 0; matches[i]; i++)
|
||
free (matches[i]);
|
||
free (matches);
|
||
}
|
||
|
||
/* Check to see if the line has changed through all of this manipulation. */
|
||
if (saved_line_buffer)
|
||
{
|
||
if (strcmp (rl_line_buffer, saved_line_buffer) != 0)
|
||
completion_changed_buffer = 1;
|
||
else
|
||
completion_changed_buffer = 0;
|
||
|
||
free (saved_line_buffer);
|
||
}
|
||
}
|
||
|
||
#if defined (VISIBLE_STATS)
|
||
/* Return the character which best describes FILENAME.
|
||
`@' for symbolic links
|
||
`/' for directories
|
||
`*' for executables
|
||
`=' for sockets */
|
||
static int
|
||
stat_char (filename)
|
||
char *filename;
|
||
{
|
||
struct stat finfo;
|
||
int character = 0;
|
||
|
||
if (stat (filename, &finfo) == -1)
|
||
return (character);
|
||
|
||
if (S_ISDIR (finfo.st_mode))
|
||
character = '/';
|
||
#if defined (S_ISLNK)
|
||
else if (S_ISLNK (finfo.st_mode))
|
||
character = '@';
|
||
#endif /* S_ISLNK */
|
||
#if defined (S_ISSOCK)
|
||
else if (S_ISSOCK (finfo.st_mode))
|
||
character = '=';
|
||
#endif /* S_ISSOCK */
|
||
else if (S_ISREG (finfo.st_mode))
|
||
{
|
||
if (access (filename, X_OK) == 0)
|
||
character = '*';
|
||
}
|
||
return (character);
|
||
}
|
||
#endif /* VISIBLE_STATS */
|
||
|
||
/* Stupid comparison routine for qsort () ing strings. */
|
||
static int
|
||
compare_strings (s1, s2)
|
||
char **s1, **s2;
|
||
{
|
||
return (strcmp (*s1, *s2));
|
||
}
|
||
|
||
/* A completion function for usernames.
|
||
TEXT contains a partial username preceded by a random
|
||
character (usually `~'). */
|
||
char *
|
||
username_completion_function (text, state)
|
||
int state;
|
||
char *text;
|
||
{
|
||
#if defined (MINIMAL)
|
||
return (char *)NULL;
|
||
#else /* !MINIMAL */
|
||
static char *username = (char *)NULL;
|
||
static struct passwd *entry;
|
||
static int namelen, first_char, first_char_loc;
|
||
|
||
if (!state)
|
||
{
|
||
if (username)
|
||
free (username);
|
||
|
||
first_char = *text;
|
||
|
||
if (first_char == '~')
|
||
first_char_loc = 1;
|
||
else
|
||
first_char_loc = 0;
|
||
|
||
username = savestring (&text[first_char_loc]);
|
||
namelen = strlen (username);
|
||
setpwent ();
|
||
}
|
||
|
||
while (entry = getpwent ())
|
||
{
|
||
if (strncmp (username, entry->pw_name, namelen) == 0)
|
||
break;
|
||
}
|
||
|
||
if (!entry)
|
||
{
|
||
endpwent ();
|
||
return ((char *)NULL);
|
||
}
|
||
else
|
||
{
|
||
char *value = (char *)xmalloc (2 + strlen (entry->pw_name));
|
||
|
||
*value = *text;
|
||
|
||
strcpy (value + first_char_loc, entry->pw_name);
|
||
|
||
if (first_char == '~')
|
||
rl_filename_completion_desired = 1;
|
||
|
||
return (value);
|
||
}
|
||
#endif /* !MINIMAL */
|
||
}
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Completion */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Non-zero means that case is not significant in completion. */
|
||
int completion_case_fold = 0;
|
||
|
||
/* Return an array of (char *) which is a list of completions for TEXT.
|
||
If there are no completions, return a NULL pointer.
|
||
The first entry in the returned array is the substitution for TEXT.
|
||
The remaining entries are the possible completions.
|
||
The array is terminated with a NULL pointer.
|
||
|
||
ENTRY_FUNCTION is a function of two args, and returns a (char *).
|
||
The first argument is TEXT.
|
||
The second is a state argument; it should be zero on the first call, and
|
||
non-zero on subsequent calls. It returns a NULL pointer to the caller
|
||
when there are no more matches.
|
||
*/
|
||
char **
|
||
completion_matches (text, entry_function)
|
||
char *text;
|
||
CPFunction *entry_function;
|
||
{
|
||
/* Number of slots in match_list. */
|
||
int match_list_size;
|
||
|
||
/* The list of matches. */
|
||
char **match_list =
|
||
(char **)xmalloc (((match_list_size = 10) + 1) * sizeof (char *));
|
||
|
||
/* Number of matches actually found. */
|
||
int matches = 0;
|
||
|
||
/* Temporary string binder. */
|
||
char *string;
|
||
|
||
match_list[1] = (char *)NULL;
|
||
|
||
while (string = (*entry_function) (text, matches))
|
||
{
|
||
if (matches + 1 == match_list_size)
|
||
match_list = (char **)xrealloc
|
||
(match_list, ((match_list_size += 10) + 1) * sizeof (char *));
|
||
|
||
match_list[++matches] = string;
|
||
match_list[matches + 1] = (char *)NULL;
|
||
}
|
||
|
||
/* If there were any matches, then look through them finding out the
|
||
lowest common denominator. That then becomes match_list[0]. */
|
||
if (matches)
|
||
{
|
||
register int i = 1;
|
||
int low = 100000; /* Count of max-matched characters. */
|
||
|
||
/* If only one match, just use that. */
|
||
if (matches == 1)
|
||
{
|
||
match_list[0] = match_list[1];
|
||
match_list[1] = (char *)NULL;
|
||
}
|
||
else
|
||
{
|
||
/* Otherwise, compare each member of the list with
|
||
the next, finding out where they stop matching. */
|
||
|
||
while (i < matches)
|
||
{
|
||
register int c1, c2, si;
|
||
|
||
if (completion_case_fold)
|
||
{
|
||
for (si = 0;
|
||
(c1 = to_lower(match_list[i][si])) &&
|
||
(c2 = to_lower(match_list[i + 1][si]));
|
||
si++)
|
||
if (c1 != c2) break;
|
||
}
|
||
else
|
||
{
|
||
for (si = 0;
|
||
(c1 = match_list[i][si]) &&
|
||
(c2 = match_list[i + 1][si]);
|
||
si++)
|
||
if (c1 != c2) break;
|
||
}
|
||
|
||
if (low > si) low = si;
|
||
i++;
|
||
}
|
||
match_list[0] = (char *)xmalloc (low + 1);
|
||
strncpy (match_list[0], match_list[1], low);
|
||
match_list[0][low] = '\0';
|
||
}
|
||
}
|
||
else /* There were no matches. */
|
||
{
|
||
free (match_list);
|
||
match_list = (char **)NULL;
|
||
}
|
||
return (match_list);
|
||
}
|
||
|
||
/* Okay, now we write the entry_function for filename completion. In the
|
||
general case. Note that completion in the shell is a little different
|
||
because of all the pathnames that must be followed when looking up the
|
||
completion for a command. */
|
||
char *
|
||
filename_completion_function (text, state)
|
||
int state;
|
||
char *text;
|
||
{
|
||
#ifndef WIN32
|
||
static DIR *directory;
|
||
static char *filename = (char *)NULL;
|
||
static char *dirname = (char *)NULL;
|
||
static char *users_dirname = (char *)NULL;
|
||
static int filename_len;
|
||
|
||
dirent *entry = (dirent *)NULL;
|
||
|
||
/* If we don't have any state, then do some initialization. */
|
||
if (!state)
|
||
{
|
||
char *temp;
|
||
|
||
if (dirname) free (dirname);
|
||
if (filename) free (filename);
|
||
if (users_dirname) free (users_dirname);
|
||
|
||
filename = savestring (text);
|
||
if (!*text) text = ".";
|
||
dirname = savestring (text);
|
||
|
||
temp = strrchr (dirname, '/');
|
||
|
||
if (temp)
|
||
{
|
||
strcpy (filename, ++temp);
|
||
*temp = '\0';
|
||
}
|
||
else
|
||
strcpy (dirname, ".");
|
||
|
||
/* We aren't done yet. We also support the "~user" syntax. */
|
||
|
||
/* Save the version of the directory that the user typed. */
|
||
users_dirname = savestring (dirname);
|
||
{
|
||
char *temp_dirname;
|
||
|
||
temp_dirname = tilde_expand (dirname);
|
||
free (dirname);
|
||
dirname = temp_dirname;
|
||
|
||
if (rl_symbolic_link_hook)
|
||
(*rl_symbolic_link_hook) (&dirname);
|
||
}
|
||
directory = opendir (dirname);
|
||
filename_len = strlen (filename);
|
||
|
||
rl_filename_completion_desired = 1;
|
||
}
|
||
|
||
/* At this point we should entertain the possibility of hacking wildcarded
|
||
filenames, like /usr/man/man<WILD>/te<TAB>. If the directory name
|
||
contains globbing characters, then build an array of directories, and
|
||
then map over that list while completing. */
|
||
/* *** UNIMPLEMENTED *** */
|
||
|
||
/* Now that we have some state, we can read the directory. */
|
||
|
||
while (directory && (entry = readdir (directory)))
|
||
{
|
||
/* Special case for no filename.
|
||
All entries except "." and ".." match. */
|
||
if (!filename_len)
|
||
{
|
||
if ((strcmp (entry->d_name, ".") != 0) &&
|
||
(strcmp (entry->d_name, "..") != 0))
|
||
break;
|
||
}
|
||
else
|
||
{
|
||
/* Otherwise, if these match upto the length of filename, then
|
||
it is a match. */
|
||
if (((int)D_NAMLEN (entry)) >= filename_len &&
|
||
(entry->d_name[0] == filename[0]) &&
|
||
(strncmp (filename, entry->d_name, filename_len) == 0))
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!entry)
|
||
{
|
||
if (directory)
|
||
{
|
||
closedir (directory);
|
||
directory = (DIR *)NULL;
|
||
}
|
||
|
||
if (dirname)
|
||
{
|
||
free (dirname);
|
||
dirname = (char *)NULL;
|
||
}
|
||
if (filename)
|
||
{
|
||
free (filename);
|
||
filename = (char *)NULL;
|
||
}
|
||
if (users_dirname)
|
||
{
|
||
free (users_dirname);
|
||
users_dirname = (char *)NULL;
|
||
}
|
||
|
||
return (char *)NULL;
|
||
}
|
||
else
|
||
{
|
||
char *temp;
|
||
|
||
if (dirname && (strcmp (dirname, ".") != 0))
|
||
{
|
||
if (rl_complete_with_tilde_expansion && *users_dirname == '~')
|
||
{
|
||
int dirlen = strlen (dirname);
|
||
temp = (char *)xmalloc (2 + dirlen + D_NAMLEN (entry));
|
||
strcpy (temp, dirname);
|
||
/* Canonicalization cuts off any final slash present. We need
|
||
to add it back. */
|
||
if (dirname[dirlen - 1] != '/')
|
||
{
|
||
temp[dirlen] = '/';
|
||
temp[dirlen + 1] = '\0';
|
||
}
|
||
}
|
||
else
|
||
{
|
||
temp = (char *)
|
||
xmalloc (1 + strlen (users_dirname) + D_NAMLEN (entry));
|
||
strcpy (temp, users_dirname);
|
||
}
|
||
|
||
strcat (temp, entry->d_name);
|
||
}
|
||
else
|
||
{
|
||
temp = (savestring (entry->d_name));
|
||
}
|
||
return (temp);
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/* A function for simple tilde expansion. */
|
||
int
|
||
rl_tilde_expand (ignore, key)
|
||
int ignore, key;
|
||
{
|
||
register int start, end;
|
||
char *homedir;
|
||
|
||
end = rl_point;
|
||
start = end - 1;
|
||
|
||
if (rl_point == rl_end && rl_line_buffer[rl_point] == '~')
|
||
{
|
||
homedir = tilde_expand ("~");
|
||
goto insert;
|
||
}
|
||
else if (rl_line_buffer[start] != '~')
|
||
{
|
||
for (; !whitespace (rl_line_buffer[start]) && start >= 0; start--);
|
||
start++;
|
||
}
|
||
|
||
end = start;
|
||
do
|
||
{
|
||
end++;
|
||
}
|
||
while (!whitespace (rl_line_buffer[end]) && end < rl_end);
|
||
|
||
if (whitespace (rl_line_buffer[end]) || end >= rl_end)
|
||
end--;
|
||
|
||
/* If the first character of the current word is a tilde, perform
|
||
tilde expansion and insert the result. If not a tilde, do
|
||
nothing. */
|
||
if (rl_line_buffer[start] == '~')
|
||
{
|
||
char *temp;
|
||
int len;
|
||
|
||
len = end - start + 1;
|
||
temp = (char *)alloca (len + 1);
|
||
strncpy (temp, rl_line_buffer + start, len);
|
||
temp[len] = '\0';
|
||
homedir = tilde_expand (temp);
|
||
|
||
insert:
|
||
rl_begin_undo_group ();
|
||
rl_delete_text (start, end + 1);
|
||
rl_point = start;
|
||
rl_insert_text (homedir);
|
||
rl_end_undo_group ();
|
||
}
|
||
|
||
return (0);
|
||
}
|
||
|
||
/* Find the first occurrence in STRING1 of any character from STRING2.
|
||
Return a pointer to the character in STRING1. */
|
||
static char *
|
||
rl_strpbrk (string1, string2)
|
||
char *string1, *string2;
|
||
{
|
||
register char *scan;
|
||
|
||
for (; *string1; string1++)
|
||
{
|
||
for (scan = string2; *scan; scan++)
|
||
{
|
||
if (*string1 == *scan)
|
||
{
|
||
return (string1);
|
||
}
|
||
}
|
||
}
|
||
return ((char *)NULL);
|
||
}
|
||
|
||
#if defined (STATIC_MALLOC)
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* xmalloc and xrealloc () */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
static void memory_error_and_abort ();
|
||
|
||
static char *
|
||
xmalloc (bytes)
|
||
int bytes;
|
||
{
|
||
char *temp = (char *)malloc (bytes);
|
||
|
||
if (!temp)
|
||
memory_error_and_abort ();
|
||
return (temp);
|
||
}
|
||
|
||
static char *
|
||
xrealloc (pointer, bytes)
|
||
char *pointer;
|
||
int bytes;
|
||
{
|
||
char *temp;
|
||
|
||
if (!pointer)
|
||
temp = (char *)malloc (bytes);
|
||
else
|
||
temp = (char *)realloc (pointer, bytes);
|
||
|
||
if (!temp)
|
||
memory_error_and_abort ();
|
||
|
||
return (temp);
|
||
}
|
||
|
||
static void
|
||
memory_error_and_abort ()
|
||
{
|
||
fprintf (stderr, "readline: Out of virtual memory!\n");
|
||
abort ();
|
||
}
|
||
#endif /* STATIC_MALLOC */
|