9c95743246
- fix types of rl_completion_entry_function and rl_add_defun - call update pos before completion to refresh the screen From Thomas Eriksson Adjust API to a more modern readline (Ryo Onodera) remove duplicate declaration
2328 lines
46 KiB
C
2328 lines
46 KiB
C
/* $NetBSD: readline.c,v 1.117 2015/06/02 15:35:31 christos Exp $ */
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/*-
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* Copyright (c) 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jaromir Dolecek.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#if !defined(lint) && !defined(SCCSID)
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__RCSID("$NetBSD: readline.c,v 1.117 2015/06/02 15:35:31 christos Exp $");
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#endif /* not lint && not SCCSID */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <dirent.h>
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#include <string.h>
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#include <pwd.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <limits.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <setjmp.h>
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#include <vis.h>
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#include "readline/readline.h"
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#include "el.h"
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#include "fcns.h" /* for EL_NUM_FCNS */
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#include "histedit.h"
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#include "filecomplete.h"
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void rl_prep_terminal(int);
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void rl_deprep_terminal(void);
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/* for rl_complete() */
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#define TAB '\r'
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/* see comment at the #ifdef for sense of this */
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/* #define GDB_411_HACK */
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/* readline compatibility stuff - look at readline sources/documentation */
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/* to see what these variables mean */
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const char *rl_library_version = "EditLine wrapper";
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int rl_readline_version = RL_READLINE_VERSION;
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static char empty[] = { '\0' };
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static char expand_chars[] = { ' ', '\t', '\n', '=', '(', '\0' };
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static char break_chars[] = { ' ', '\t', '\n', '"', '\\', '\'', '`', '@', '$',
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'>', '<', '=', ';', '|', '&', '{', '(', '\0' };
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char *rl_readline_name = empty;
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FILE *rl_instream = NULL;
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FILE *rl_outstream = NULL;
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int rl_point = 0;
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int rl_end = 0;
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char *rl_line_buffer = NULL;
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rl_vcpfunc_t *rl_linefunc = NULL;
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int rl_done = 0;
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VFunction *rl_event_hook = NULL;
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KEYMAP_ENTRY_ARRAY emacs_standard_keymap,
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emacs_meta_keymap,
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emacs_ctlx_keymap;
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/*
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* The following is not implemented; we always catch signals in the
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* libedit fashion: set handlers on entry to el_gets() and clear them
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* on the way out. This simplistic approach works for most cases; if
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* it does not work for your application, please let us know.
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*/
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int rl_catch_signals = 1;
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int rl_catch_sigwinch = 1;
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int history_base = 1; /* probably never subject to change */
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int history_length = 0;
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int max_input_history = 0;
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char history_expansion_char = '!';
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char history_subst_char = '^';
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char *history_no_expand_chars = expand_chars;
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Function *history_inhibit_expansion_function = NULL;
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char *history_arg_extract(int start, int end, const char *str);
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int rl_inhibit_completion = 0;
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int rl_attempted_completion_over = 0;
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char *rl_basic_word_break_characters = break_chars;
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char *rl_completer_word_break_characters = NULL;
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char *rl_completer_quote_characters = NULL;
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rl_compentry_func_t *rl_completion_entry_function = NULL;
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char *(*rl_completion_word_break_hook)(void) = NULL;
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rl_completion_func_t *rl_attempted_completion_function = NULL;
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Function *rl_pre_input_hook = NULL;
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Function *rl_startup1_hook = NULL;
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int (*rl_getc_function)(FILE *) = NULL;
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char *rl_terminal_name = NULL;
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int rl_already_prompted = 0;
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int rl_filename_completion_desired = 0;
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int rl_ignore_completion_duplicates = 0;
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int readline_echoing_p = 1;
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int _rl_print_completions_horizontally = 0;
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VFunction *rl_redisplay_function = NULL;
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Function *rl_startup_hook = NULL;
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VFunction *rl_completion_display_matches_hook = NULL;
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VFunction *rl_prep_term_function = (VFunction *)rl_prep_terminal;
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VFunction *rl_deprep_term_function = (VFunction *)rl_deprep_terminal;
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KEYMAP_ENTRY_ARRAY emacs_meta_keymap;
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/*
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* The current prompt string.
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*/
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char *rl_prompt = NULL;
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/*
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* This is set to character indicating type of completion being done by
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* rl_complete_internal(); this is available for application completion
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* functions.
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*/
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int rl_completion_type = 0;
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/*
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* If more than this number of items results from query for possible
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* completions, we ask user if they are sure to really display the list.
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*/
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int rl_completion_query_items = 100;
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/*
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* List of characters which are word break characters, but should be left
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* in the parsed text when it is passed to the completion function.
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* Shell uses this to help determine what kind of completing to do.
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*/
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char *rl_special_prefixes = NULL;
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/*
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* This is the character appended to the completed words if at the end of
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* the line. Default is ' ' (a space).
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*/
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int rl_completion_append_character = ' ';
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/* stuff below is used internally by libedit for readline emulation */
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static History *h = NULL;
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static EditLine *e = NULL;
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static rl_command_func_t *map[256];
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static jmp_buf topbuf;
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/* internal functions */
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static unsigned char _el_rl_complete(EditLine *, int);
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static unsigned char _el_rl_tstp(EditLine *, int);
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static char *_get_prompt(EditLine *);
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static int _getc_function(EditLine *, char *);
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static HIST_ENTRY *_move_history(int);
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static int _history_expand_command(const char *, size_t, size_t,
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char **);
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static char *_rl_compat_sub(const char *, const char *,
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const char *, int);
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static int _rl_event_read_char(EditLine *, char *);
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static void _rl_update_pos(void);
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/* ARGSUSED */
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static char *
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_get_prompt(EditLine *el __attribute__((__unused__)))
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{
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rl_already_prompted = 1;
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return rl_prompt;
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}
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/*
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* generic function for moving around history
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*/
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static HIST_ENTRY *
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_move_history(int op)
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{
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HistEvent ev;
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static HIST_ENTRY rl_he;
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if (history(h, &ev, op) != 0)
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return NULL;
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rl_he.line = ev.str;
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rl_he.data = NULL;
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return &rl_he;
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}
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/*
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* read one key from user defined input function
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*/
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static int
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/*ARGSUSED*/
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_getc_function(EditLine *el __attribute__((__unused__)), char *c)
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{
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int i;
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i = (*rl_getc_function)(NULL);
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if (i == -1)
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return 0;
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*c = (char)i;
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return 1;
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}
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static void
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_resize_fun(EditLine *el, void *a)
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{
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const LineInfo *li;
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char **ap = a;
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li = el_line(el);
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/* a cheesy way to get rid of const cast. */
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*ap = memchr(li->buffer, *li->buffer, (size_t)1);
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}
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static const char *
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_default_history_file(void)
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{
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struct passwd *p;
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static char *path;
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size_t len;
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if (path)
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return path;
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if ((p = getpwuid(getuid())) == NULL)
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return NULL;
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len = strlen(p->pw_dir) + sizeof("/.history");
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if ((path = malloc(len)) == NULL)
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return NULL;
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(void)snprintf(path, len, "%s/.history", p->pw_dir);
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return path;
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}
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/*
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* READLINE compatibility stuff
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*/
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/*
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* Set the prompt
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*/
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int
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rl_set_prompt(const char *prompt)
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{
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char *p;
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if (!prompt)
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prompt = "";
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if (rl_prompt != NULL && strcmp(rl_prompt, prompt) == 0)
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return 0;
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if (rl_prompt)
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el_free(rl_prompt);
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rl_prompt = strdup(prompt);
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if (rl_prompt == NULL)
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return -1;
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while ((p = strchr(rl_prompt, RL_PROMPT_END_IGNORE)) != NULL)
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*p = RL_PROMPT_START_IGNORE;
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return 0;
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}
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/*
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* initialize rl compat stuff
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*/
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int
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rl_initialize(void)
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{
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HistEvent ev;
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int editmode = 1;
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struct termios t;
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if (e != NULL)
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el_end(e);
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if (h != NULL)
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history_end(h);
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if (!rl_instream)
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rl_instream = stdin;
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if (!rl_outstream)
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rl_outstream = stdout;
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/*
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* See if we don't really want to run the editor
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*/
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if (tcgetattr(fileno(rl_instream), &t) != -1 && (t.c_lflag & ECHO) == 0)
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editmode = 0;
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e = el_init(rl_readline_name, rl_instream, rl_outstream, stderr);
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if (!editmode)
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el_set(e, EL_EDITMODE, 0);
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h = history_init();
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if (!e || !h)
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return -1;
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history(h, &ev, H_SETSIZE, INT_MAX); /* unlimited */
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history_length = 0;
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max_input_history = INT_MAX;
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el_set(e, EL_HIST, history, h);
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/* Setup resize function */
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el_set(e, EL_RESIZE, _resize_fun, &rl_line_buffer);
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/* setup getc function if valid */
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if (rl_getc_function)
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el_set(e, EL_GETCFN, _getc_function);
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/* for proper prompt printing in readline() */
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if (rl_set_prompt("") == -1) {
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history_end(h);
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el_end(e);
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return -1;
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}
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el_set(e, EL_PROMPT, _get_prompt, RL_PROMPT_START_IGNORE);
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el_set(e, EL_SIGNAL, rl_catch_signals);
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/* set default mode to "emacs"-style and read setting afterwards */
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/* so this can be overridden */
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el_set(e, EL_EDITOR, "emacs");
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if (rl_terminal_name != NULL)
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el_set(e, EL_TERMINAL, rl_terminal_name);
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else
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el_get(e, EL_TERMINAL, &rl_terminal_name);
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/*
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* Word completion - this has to go AFTER rebinding keys
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* to emacs-style.
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*/
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el_set(e, EL_ADDFN, "rl_complete",
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"ReadLine compatible completion function",
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_el_rl_complete);
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el_set(e, EL_BIND, "^I", "rl_complete", NULL);
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/*
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* Send TSTP when ^Z is pressed.
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*/
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el_set(e, EL_ADDFN, "rl_tstp",
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"ReadLine compatible suspend function",
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_el_rl_tstp);
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el_set(e, EL_BIND, "^Z", "rl_tstp", NULL);
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/*
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* Set some readline compatible key-bindings.
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*/
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el_set(e, EL_BIND, "^R", "em-inc-search-prev", NULL);
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/*
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* Allow the use of Home/End keys.
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*/
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el_set(e, EL_BIND, "\\e[1~", "ed-move-to-beg", NULL);
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el_set(e, EL_BIND, "\\e[4~", "ed-move-to-end", NULL);
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el_set(e, EL_BIND, "\\e[7~", "ed-move-to-beg", NULL);
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el_set(e, EL_BIND, "\\e[8~", "ed-move-to-end", NULL);
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el_set(e, EL_BIND, "\\e[H", "ed-move-to-beg", NULL);
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el_set(e, EL_BIND, "\\e[F", "ed-move-to-end", NULL);
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/*
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* Allow the use of the Delete/Insert keys.
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*/
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el_set(e, EL_BIND, "\\e[3~", "ed-delete-next-char", NULL);
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el_set(e, EL_BIND, "\\e[2~", "ed-quoted-insert", NULL);
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/*
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* Ctrl-left-arrow and Ctrl-right-arrow for word moving.
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*/
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el_set(e, EL_BIND, "\\e[1;5C", "em-next-word", NULL);
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el_set(e, EL_BIND, "\\e[1;5D", "ed-prev-word", NULL);
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el_set(e, EL_BIND, "\\e[5C", "em-next-word", NULL);
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el_set(e, EL_BIND, "\\e[5D", "ed-prev-word", NULL);
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el_set(e, EL_BIND, "\\e\\e[C", "em-next-word", NULL);
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el_set(e, EL_BIND, "\\e\\e[D", "ed-prev-word", NULL);
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/* read settings from configuration file */
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el_source(e, NULL);
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/*
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* Unfortunately, some applications really do use rl_point
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* and rl_line_buffer directly.
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*/
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_resize_fun(e, &rl_line_buffer);
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_rl_update_pos();
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if (rl_startup_hook)
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(*rl_startup_hook)(NULL, 0);
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return 0;
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}
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/*
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* read one line from input stream and return it, chomping
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* trailing newline (if there is any)
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*/
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char *
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readline(const char *p)
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{
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HistEvent ev;
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const char * volatile prompt = p;
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int count;
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const char *ret;
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char *buf;
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static int used_event_hook;
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if (e == NULL || h == NULL)
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rl_initialize();
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rl_done = 0;
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(void)setjmp(topbuf);
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/* update prompt accordingly to what has been passed */
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if (rl_set_prompt(prompt) == -1)
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return NULL;
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if (rl_pre_input_hook)
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(*rl_pre_input_hook)(NULL, 0);
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if (rl_event_hook && !(e->el_flags&NO_TTY)) {
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el_set(e, EL_GETCFN, _rl_event_read_char);
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used_event_hook = 1;
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}
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if (!rl_event_hook && used_event_hook) {
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el_set(e, EL_GETCFN, EL_BUILTIN_GETCFN);
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used_event_hook = 0;
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}
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rl_already_prompted = 0;
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/* get one line from input stream */
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ret = el_gets(e, &count);
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if (ret && count > 0) {
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int lastidx;
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buf = strdup(ret);
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if (buf == NULL)
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return NULL;
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lastidx = count - 1;
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if (buf[lastidx] == '\n')
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buf[lastidx] = '\0';
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} else
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buf = NULL;
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history(h, &ev, H_GETSIZE);
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history_length = ev.num;
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return buf;
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}
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/*
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* history functions
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*/
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/*
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* is normally called before application starts to use
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* history expansion functions
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*/
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void
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using_history(void)
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{
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if (h == NULL || e == NULL)
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rl_initialize();
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}
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/*
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* substitute ``what'' with ``with'', returning resulting string; if
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* globally == 1, substitutes all occurrences of what, otherwise only the
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* first one
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*/
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static char *
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_rl_compat_sub(const char *str, const char *what, const char *with,
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int globally)
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{
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const char *s;
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char *r, *result;
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size_t len, with_len, what_len;
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len = strlen(str);
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with_len = strlen(with);
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what_len = strlen(what);
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/* calculate length we need for result */
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s = str;
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while (*s) {
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if (*s == *what && !strncmp(s, what, what_len)) {
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len += with_len - what_len;
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if (!globally)
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break;
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s += what_len;
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} else
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s++;
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}
|
|
r = result = el_malloc((len + 1) * sizeof(*r));
|
|
if (result == NULL)
|
|
return NULL;
|
|
s = str;
|
|
while (*s) {
|
|
if (*s == *what && !strncmp(s, what, what_len)) {
|
|
(void)strncpy(r, with, with_len);
|
|
r += with_len;
|
|
s += what_len;
|
|
if (!globally) {
|
|
(void)strcpy(r, s);
|
|
return result;
|
|
}
|
|
} else
|
|
*r++ = *s++;
|
|
}
|
|
*r = '\0';
|
|
return result;
|
|
}
|
|
|
|
static char *last_search_pat; /* last !?pat[?] search pattern */
|
|
static char *last_search_match; /* last !?pat[?] that matched */
|
|
|
|
const char *
|
|
get_history_event(const char *cmd, int *cindex, int qchar)
|
|
{
|
|
int idx, sign, sub, num, begin, ret;
|
|
size_t len;
|
|
char *pat;
|
|
const char *rptr;
|
|
HistEvent ev;
|
|
|
|
idx = *cindex;
|
|
if (cmd[idx++] != history_expansion_char)
|
|
return NULL;
|
|
|
|
/* find out which event to take */
|
|
if (cmd[idx] == history_expansion_char || cmd[idx] == '\0') {
|
|
if (history(h, &ev, H_FIRST) != 0)
|
|
return NULL;
|
|
*cindex = cmd[idx]? (idx + 1):idx;
|
|
return ev.str;
|
|
}
|
|
sign = 0;
|
|
if (cmd[idx] == '-') {
|
|
sign = 1;
|
|
idx++;
|
|
}
|
|
|
|
if ('0' <= cmd[idx] && cmd[idx] <= '9') {
|
|
HIST_ENTRY *rl_he;
|
|
|
|
num = 0;
|
|
while (cmd[idx] && '0' <= cmd[idx] && cmd[idx] <= '9') {
|
|
num = num * 10 + cmd[idx] - '0';
|
|
idx++;
|
|
}
|
|
if (sign)
|
|
num = history_length - num + 1;
|
|
|
|
if (!(rl_he = history_get(num)))
|
|
return NULL;
|
|
|
|
*cindex = idx;
|
|
return rl_he->line;
|
|
}
|
|
sub = 0;
|
|
if (cmd[idx] == '?') {
|
|
sub = 1;
|
|
idx++;
|
|
}
|
|
begin = idx;
|
|
while (cmd[idx]) {
|
|
if (cmd[idx] == '\n')
|
|
break;
|
|
if (sub && cmd[idx] == '?')
|
|
break;
|
|
if (!sub && (cmd[idx] == ':' || cmd[idx] == ' '
|
|
|| cmd[idx] == '\t' || cmd[idx] == qchar))
|
|
break;
|
|
idx++;
|
|
}
|
|
len = (size_t)idx - (size_t)begin;
|
|
if (sub && cmd[idx] == '?')
|
|
idx++;
|
|
if (sub && len == 0 && last_search_pat && *last_search_pat)
|
|
pat = last_search_pat;
|
|
else if (len == 0)
|
|
return NULL;
|
|
else {
|
|
if ((pat = el_malloc((len + 1) * sizeof(*pat))) == NULL)
|
|
return NULL;
|
|
(void)strncpy(pat, cmd + begin, len);
|
|
pat[len] = '\0';
|
|
}
|
|
|
|
if (history(h, &ev, H_CURR) != 0) {
|
|
if (pat != last_search_pat)
|
|
el_free(pat);
|
|
return NULL;
|
|
}
|
|
num = ev.num;
|
|
|
|
if (sub) {
|
|
if (pat != last_search_pat) {
|
|
if (last_search_pat)
|
|
el_free(last_search_pat);
|
|
last_search_pat = pat;
|
|
}
|
|
ret = history_search(pat, -1);
|
|
} else
|
|
ret = history_search_prefix(pat, -1);
|
|
|
|
if (ret == -1) {
|
|
/* restore to end of list on failed search */
|
|
history(h, &ev, H_FIRST);
|
|
(void)fprintf(rl_outstream, "%s: Event not found\n", pat);
|
|
if (pat != last_search_pat)
|
|
el_free(pat);
|
|
return NULL;
|
|
}
|
|
|
|
if (sub && len) {
|
|
if (last_search_match && last_search_match != pat)
|
|
el_free(last_search_match);
|
|
last_search_match = pat;
|
|
}
|
|
|
|
if (pat != last_search_pat)
|
|
el_free(pat);
|
|
|
|
if (history(h, &ev, H_CURR) != 0)
|
|
return NULL;
|
|
*cindex = idx;
|
|
rptr = ev.str;
|
|
|
|
/* roll back to original position */
|
|
(void)history(h, &ev, H_SET, num);
|
|
|
|
return rptr;
|
|
}
|
|
|
|
/*
|
|
* the real function doing history expansion - takes as argument command
|
|
* to do and data upon which the command should be executed
|
|
* does expansion the way I've understood readline documentation
|
|
*
|
|
* returns 0 if data was not modified, 1 if it was and 2 if the string
|
|
* should be only printed and not executed; in case of error,
|
|
* returns -1 and *result points to NULL
|
|
* it's the caller's responsibility to free() the string returned in *result
|
|
*/
|
|
static int
|
|
_history_expand_command(const char *command, size_t offs, size_t cmdlen,
|
|
char **result)
|
|
{
|
|
char *tmp, *search = NULL, *aptr;
|
|
const char *ptr, *cmd;
|
|
static char *from = NULL, *to = NULL;
|
|
int start, end, idx, has_mods = 0;
|
|
int p_on = 0, g_on = 0;
|
|
|
|
*result = NULL;
|
|
aptr = NULL;
|
|
ptr = NULL;
|
|
|
|
/* First get event specifier */
|
|
idx = 0;
|
|
|
|
if (strchr(":^*$", command[offs + 1])) {
|
|
char str[4];
|
|
/*
|
|
* "!:" is shorthand for "!!:".
|
|
* "!^", "!*" and "!$" are shorthand for
|
|
* "!!:^", "!!:*" and "!!:$" respectively.
|
|
*/
|
|
str[0] = str[1] = '!';
|
|
str[2] = '0';
|
|
ptr = get_history_event(str, &idx, 0);
|
|
idx = (command[offs + 1] == ':')? 1:0;
|
|
has_mods = 1;
|
|
} else {
|
|
if (command[offs + 1] == '#') {
|
|
/* use command so far */
|
|
if ((aptr = el_malloc((offs + 1) * sizeof(*aptr)))
|
|
== NULL)
|
|
return -1;
|
|
(void)strncpy(aptr, command, offs);
|
|
aptr[offs] = '\0';
|
|
idx = 1;
|
|
} else {
|
|
int qchar;
|
|
|
|
qchar = (offs > 0 && command[offs - 1] == '"')? '"':0;
|
|
ptr = get_history_event(command + offs, &idx, qchar);
|
|
}
|
|
has_mods = command[offs + (size_t)idx] == ':';
|
|
}
|
|
|
|
if (ptr == NULL && aptr == NULL)
|
|
return -1;
|
|
|
|
if (!has_mods) {
|
|
*result = strdup(aptr ? aptr : ptr);
|
|
if (aptr)
|
|
el_free(aptr);
|
|
if (*result == NULL)
|
|
return -1;
|
|
return 1;
|
|
}
|
|
|
|
cmd = command + offs + idx + 1;
|
|
|
|
/* Now parse any word designators */
|
|
|
|
if (*cmd == '%') /* last word matched by ?pat? */
|
|
tmp = strdup(last_search_match? last_search_match:"");
|
|
else if (strchr("^*$-0123456789", *cmd)) {
|
|
start = end = -1;
|
|
if (*cmd == '^')
|
|
start = end = 1, cmd++;
|
|
else if (*cmd == '$')
|
|
start = -1, cmd++;
|
|
else if (*cmd == '*')
|
|
start = 1, cmd++;
|
|
else if (*cmd == '-' || isdigit((unsigned char) *cmd)) {
|
|
start = 0;
|
|
while (*cmd && '0' <= *cmd && *cmd <= '9')
|
|
start = start * 10 + *cmd++ - '0';
|
|
|
|
if (*cmd == '-') {
|
|
if (isdigit((unsigned char) cmd[1])) {
|
|
cmd++;
|
|
end = 0;
|
|
while (*cmd && '0' <= *cmd && *cmd <= '9')
|
|
end = end * 10 + *cmd++ - '0';
|
|
} else if (cmd[1] == '$') {
|
|
cmd += 2;
|
|
end = -1;
|
|
} else {
|
|
cmd++;
|
|
end = -2;
|
|
}
|
|
} else if (*cmd == '*')
|
|
end = -1, cmd++;
|
|
else
|
|
end = start;
|
|
}
|
|
tmp = history_arg_extract(start, end, aptr? aptr:ptr);
|
|
if (tmp == NULL) {
|
|
(void)fprintf(rl_outstream, "%s: Bad word specifier",
|
|
command + offs + idx);
|
|
if (aptr)
|
|
el_free(aptr);
|
|
return -1;
|
|
}
|
|
} else
|
|
tmp = strdup(aptr? aptr:ptr);
|
|
|
|
if (aptr)
|
|
el_free(aptr);
|
|
|
|
if (*cmd == '\0' || ((size_t)(cmd - (command + offs)) >= cmdlen)) {
|
|
*result = tmp;
|
|
return 1;
|
|
}
|
|
|
|
for (; *cmd; cmd++) {
|
|
if (*cmd == ':')
|
|
continue;
|
|
else if (*cmd == 'h') { /* remove trailing path */
|
|
if ((aptr = strrchr(tmp, '/')) != NULL)
|
|
*aptr = '\0';
|
|
} else if (*cmd == 't') { /* remove leading path */
|
|
if ((aptr = strrchr(tmp, '/')) != NULL) {
|
|
aptr = strdup(aptr + 1);
|
|
el_free(tmp);
|
|
tmp = aptr;
|
|
}
|
|
} else if (*cmd == 'r') { /* remove trailing suffix */
|
|
if ((aptr = strrchr(tmp, '.')) != NULL)
|
|
*aptr = '\0';
|
|
} else if (*cmd == 'e') { /* remove all but suffix */
|
|
if ((aptr = strrchr(tmp, '.')) != NULL) {
|
|
aptr = strdup(aptr);
|
|
el_free(tmp);
|
|
tmp = aptr;
|
|
}
|
|
} else if (*cmd == 'p') /* print only */
|
|
p_on = 1;
|
|
else if (*cmd == 'g')
|
|
g_on = 2;
|
|
else if (*cmd == 's' || *cmd == '&') {
|
|
char *what, *with, delim;
|
|
size_t len, from_len;
|
|
size_t size;
|
|
|
|
if (*cmd == '&' && (from == NULL || to == NULL))
|
|
continue;
|
|
else if (*cmd == 's') {
|
|
delim = *(++cmd), cmd++;
|
|
size = 16;
|
|
what = el_realloc(from, size * sizeof(*what));
|
|
if (what == NULL) {
|
|
el_free(from);
|
|
el_free(tmp);
|
|
return 0;
|
|
}
|
|
len = 0;
|
|
for (; *cmd && *cmd != delim; cmd++) {
|
|
if (*cmd == '\\' && cmd[1] == delim)
|
|
cmd++;
|
|
if (len >= size) {
|
|
char *nwhat;
|
|
nwhat = el_realloc(what,
|
|
(size <<= 1) *
|
|
sizeof(*nwhat));
|
|
if (nwhat == NULL) {
|
|
el_free(what);
|
|
el_free(tmp);
|
|
return 0;
|
|
}
|
|
what = nwhat;
|
|
}
|
|
what[len++] = *cmd;
|
|
}
|
|
what[len] = '\0';
|
|
from = what;
|
|
if (*what == '\0') {
|
|
el_free(what);
|
|
if (search) {
|
|
from = strdup(search);
|
|
if (from == NULL) {
|
|
el_free(tmp);
|
|
return 0;
|
|
}
|
|
} else {
|
|
from = NULL;
|
|
el_free(tmp);
|
|
return -1;
|
|
}
|
|
}
|
|
cmd++; /* shift after delim */
|
|
if (!*cmd)
|
|
continue;
|
|
|
|
size = 16;
|
|
with = el_realloc(to, size * sizeof(*with));
|
|
if (with == NULL) {
|
|
el_free(to);
|
|
el_free(tmp);
|
|
return -1;
|
|
}
|
|
len = 0;
|
|
from_len = strlen(from);
|
|
for (; *cmd && *cmd != delim; cmd++) {
|
|
if (len + from_len + 1 >= size) {
|
|
char *nwith;
|
|
size += from_len + 1;
|
|
nwith = el_realloc(with,
|
|
size * sizeof(*nwith));
|
|
if (nwith == NULL) {
|
|
el_free(with);
|
|
el_free(tmp);
|
|
return -1;
|
|
}
|
|
with = nwith;
|
|
}
|
|
if (*cmd == '&') {
|
|
/* safe */
|
|
(void)strcpy(&with[len], from);
|
|
len += from_len;
|
|
continue;
|
|
}
|
|
if (*cmd == '\\'
|
|
&& (*(cmd + 1) == delim
|
|
|| *(cmd + 1) == '&'))
|
|
cmd++;
|
|
with[len++] = *cmd;
|
|
}
|
|
with[len] = '\0';
|
|
to = with;
|
|
}
|
|
|
|
aptr = _rl_compat_sub(tmp, from, to, g_on);
|
|
if (aptr) {
|
|
el_free(tmp);
|
|
tmp = aptr;
|
|
}
|
|
g_on = 0;
|
|
}
|
|
}
|
|
*result = tmp;
|
|
return p_on? 2:1;
|
|
}
|
|
|
|
|
|
/*
|
|
* csh-style history expansion
|
|
*/
|
|
int
|
|
history_expand(char *str, char **output)
|
|
{
|
|
int ret = 0;
|
|
size_t idx, i, size;
|
|
char *tmp, *result;
|
|
|
|
if (h == NULL || e == NULL)
|
|
rl_initialize();
|
|
|
|
if (history_expansion_char == 0) {
|
|
*output = strdup(str);
|
|
return 0;
|
|
}
|
|
|
|
*output = NULL;
|
|
if (str[0] == history_subst_char) {
|
|
/* ^foo^foo2^ is equivalent to !!:s^foo^foo2^ */
|
|
*output = el_malloc((strlen(str) + 4 + 1) * sizeof(**output));
|
|
if (*output == NULL)
|
|
return 0;
|
|
(*output)[0] = (*output)[1] = history_expansion_char;
|
|
(*output)[2] = ':';
|
|
(*output)[3] = 's';
|
|
(void)strcpy((*output) + 4, str);
|
|
str = *output;
|
|
} else {
|
|
*output = strdup(str);
|
|
if (*output == NULL)
|
|
return 0;
|
|
}
|
|
|
|
#define ADD_STRING(what, len, fr) \
|
|
{ \
|
|
if (idx + len + 1 > size) { \
|
|
char *nresult = el_realloc(result, \
|
|
(size += len + 1) * sizeof(*nresult)); \
|
|
if (nresult == NULL) { \
|
|
el_free(*output); \
|
|
if (/*CONSTCOND*/fr) \
|
|
el_free(tmp); \
|
|
return 0; \
|
|
} \
|
|
result = nresult; \
|
|
} \
|
|
(void)strncpy(&result[idx], what, len); \
|
|
idx += len; \
|
|
result[idx] = '\0'; \
|
|
}
|
|
|
|
result = NULL;
|
|
size = idx = 0;
|
|
tmp = NULL;
|
|
for (i = 0; str[i];) {
|
|
int qchar, loop_again;
|
|
size_t len, start, j;
|
|
|
|
qchar = 0;
|
|
loop_again = 1;
|
|
start = j = i;
|
|
loop:
|
|
for (; str[j]; j++) {
|
|
if (str[j] == '\\' &&
|
|
str[j + 1] == history_expansion_char) {
|
|
len = strlen(&str[j + 1]) + 1;
|
|
memmove(&str[j], &str[j + 1], len);
|
|
continue;
|
|
}
|
|
if (!loop_again) {
|
|
if (isspace((unsigned char) str[j])
|
|
|| str[j] == qchar)
|
|
break;
|
|
}
|
|
if (str[j] == history_expansion_char
|
|
&& !strchr(history_no_expand_chars, str[j + 1])
|
|
&& (!history_inhibit_expansion_function ||
|
|
(*history_inhibit_expansion_function)(str,
|
|
(int)j) == 0))
|
|
break;
|
|
}
|
|
|
|
if (str[j] && loop_again) {
|
|
i = j;
|
|
qchar = (j > 0 && str[j - 1] == '"' )? '"':0;
|
|
j++;
|
|
if (str[j] == history_expansion_char)
|
|
j++;
|
|
loop_again = 0;
|
|
goto loop;
|
|
}
|
|
len = i - start;
|
|
ADD_STRING(&str[start], len, 0);
|
|
|
|
if (str[i] == '\0' || str[i] != history_expansion_char) {
|
|
len = j - i;
|
|
ADD_STRING(&str[i], len, 0);
|
|
if (start == 0)
|
|
ret = 0;
|
|
else
|
|
ret = 1;
|
|
break;
|
|
}
|
|
ret = _history_expand_command (str, i, (j - i), &tmp);
|
|
if (ret > 0 && tmp) {
|
|
len = strlen(tmp);
|
|
ADD_STRING(tmp, len, 1);
|
|
}
|
|
if (tmp) {
|
|
el_free(tmp);
|
|
tmp = NULL;
|
|
}
|
|
i = j;
|
|
}
|
|
|
|
/* ret is 2 for "print only" option */
|
|
if (ret == 2) {
|
|
add_history(result);
|
|
#ifdef GDB_411_HACK
|
|
/* gdb 4.11 has been shipped with readline, where */
|
|
/* history_expand() returned -1 when the line */
|
|
/* should not be executed; in readline 2.1+ */
|
|
/* it should return 2 in such a case */
|
|
ret = -1;
|
|
#endif
|
|
}
|
|
el_free(*output);
|
|
*output = result;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Return a string consisting of arguments of "str" from "start" to "end".
|
|
*/
|
|
char *
|
|
history_arg_extract(int start, int end, const char *str)
|
|
{
|
|
size_t i, len, max;
|
|
char **arr, *result = NULL;
|
|
|
|
arr = history_tokenize(str);
|
|
if (!arr)
|
|
return NULL;
|
|
if (arr && *arr == NULL)
|
|
goto out;
|
|
|
|
for (max = 0; arr[max]; max++)
|
|
continue;
|
|
max--;
|
|
|
|
if (start == '$')
|
|
start = (int)max;
|
|
if (end == '$')
|
|
end = (int)max;
|
|
if (end < 0)
|
|
end = (int)max + end + 1;
|
|
if (start < 0)
|
|
start = end;
|
|
|
|
if (start < 0 || end < 0 || (size_t)start > max ||
|
|
(size_t)end > max || start > end)
|
|
goto out;
|
|
|
|
for (i = (size_t)start, len = 0; i <= (size_t)end; i++)
|
|
len += strlen(arr[i]) + 1;
|
|
len++;
|
|
result = el_malloc(len * sizeof(*result));
|
|
if (result == NULL)
|
|
goto out;
|
|
|
|
for (i = (size_t)start, len = 0; i <= (size_t)end; i++) {
|
|
(void)strcpy(result + len, arr[i]);
|
|
len += strlen(arr[i]);
|
|
if (i < (size_t)end)
|
|
result[len++] = ' ';
|
|
}
|
|
result[len] = '\0';
|
|
|
|
out:
|
|
for (i = 0; arr[i]; i++)
|
|
el_free(arr[i]);
|
|
el_free(arr);
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Parse the string into individual tokens,
|
|
* similar to how shell would do it.
|
|
*/
|
|
char **
|
|
history_tokenize(const char *str)
|
|
{
|
|
int size = 1, idx = 0, i, start;
|
|
size_t len;
|
|
char **result = NULL, *temp, delim = '\0';
|
|
|
|
for (i = 0; str[i];) {
|
|
while (isspace((unsigned char) str[i]))
|
|
i++;
|
|
start = i;
|
|
for (; str[i];) {
|
|
if (str[i] == '\\') {
|
|
if (str[i+1] != '\0')
|
|
i++;
|
|
} else if (str[i] == delim)
|
|
delim = '\0';
|
|
else if (!delim &&
|
|
(isspace((unsigned char) str[i]) ||
|
|
strchr("()<>;&|$", str[i])))
|
|
break;
|
|
else if (!delim && strchr("'`\"", str[i]))
|
|
delim = str[i];
|
|
if (str[i])
|
|
i++;
|
|
}
|
|
|
|
if (idx + 2 >= size) {
|
|
char **nresult;
|
|
size <<= 1;
|
|
nresult = el_realloc(result, (size_t)size * sizeof(*nresult));
|
|
if (nresult == NULL) {
|
|
el_free(result);
|
|
return NULL;
|
|
}
|
|
result = nresult;
|
|
}
|
|
len = (size_t)i - (size_t)start;
|
|
temp = el_malloc((size_t)(len + 1) * sizeof(*temp));
|
|
if (temp == NULL) {
|
|
for (i = 0; i < idx; i++)
|
|
el_free(result[i]);
|
|
el_free(result);
|
|
return NULL;
|
|
}
|
|
(void)strncpy(temp, &str[start], len);
|
|
temp[len] = '\0';
|
|
result[idx++] = temp;
|
|
result[idx] = NULL;
|
|
if (str[i])
|
|
i++;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
/*
|
|
* limit size of history record to ``max'' events
|
|
*/
|
|
void
|
|
stifle_history(int max)
|
|
{
|
|
HistEvent ev;
|
|
|
|
if (h == NULL || e == NULL)
|
|
rl_initialize();
|
|
|
|
if (history(h, &ev, H_SETSIZE, max) == 0)
|
|
max_input_history = max;
|
|
}
|
|
|
|
|
|
/*
|
|
* "unlimit" size of history - set the limit to maximum allowed int value
|
|
*/
|
|
int
|
|
unstifle_history(void)
|
|
{
|
|
HistEvent ev;
|
|
int omax;
|
|
|
|
history(h, &ev, H_SETSIZE, INT_MAX);
|
|
omax = max_input_history;
|
|
max_input_history = INT_MAX;
|
|
return omax; /* some value _must_ be returned */
|
|
}
|
|
|
|
|
|
int
|
|
history_is_stifled(void)
|
|
{
|
|
|
|
/* cannot return true answer */
|
|
return max_input_history != INT_MAX;
|
|
}
|
|
|
|
static const char _history_tmp_template[] = "/tmp/.historyXXXXXX";
|
|
|
|
int
|
|
history_truncate_file (const char *filename, int nlines)
|
|
{
|
|
int ret = 0;
|
|
FILE *fp, *tp;
|
|
char template[sizeof(_history_tmp_template)];
|
|
char buf[4096];
|
|
int fd;
|
|
char *cp;
|
|
off_t off;
|
|
int count = 0;
|
|
ssize_t left = 0;
|
|
|
|
if (filename == NULL && (filename = _default_history_file()) == NULL)
|
|
return errno;
|
|
if ((fp = fopen(filename, "r+")) == NULL)
|
|
return errno;
|
|
strcpy(template, _history_tmp_template);
|
|
if ((fd = mkstemp(template)) == -1) {
|
|
ret = errno;
|
|
goto out1;
|
|
}
|
|
|
|
if ((tp = fdopen(fd, "r+")) == NULL) {
|
|
close(fd);
|
|
ret = errno;
|
|
goto out2;
|
|
}
|
|
|
|
for(;;) {
|
|
if (fread(buf, sizeof(buf), (size_t)1, fp) != 1) {
|
|
if (ferror(fp)) {
|
|
ret = errno;
|
|
break;
|
|
}
|
|
if (fseeko(fp, (off_t)sizeof(buf) * count, SEEK_SET) ==
|
|
(off_t)-1) {
|
|
ret = errno;
|
|
break;
|
|
}
|
|
left = (ssize_t)fread(buf, (size_t)1, sizeof(buf), fp);
|
|
if (ferror(fp)) {
|
|
ret = errno;
|
|
break;
|
|
}
|
|
if (left == 0) {
|
|
count--;
|
|
left = sizeof(buf);
|
|
} else if (fwrite(buf, (size_t)left, (size_t)1, tp)
|
|
!= 1) {
|
|
ret = errno;
|
|
break;
|
|
}
|
|
fflush(tp);
|
|
break;
|
|
}
|
|
if (fwrite(buf, sizeof(buf), (size_t)1, tp) != 1) {
|
|
ret = errno;
|
|
break;
|
|
}
|
|
count++;
|
|
}
|
|
if (ret)
|
|
goto out3;
|
|
cp = buf + left - 1;
|
|
if(*cp != '\n')
|
|
cp++;
|
|
for(;;) {
|
|
while (--cp >= buf) {
|
|
if (*cp == '\n') {
|
|
if (--nlines == 0) {
|
|
if (++cp >= buf + sizeof(buf)) {
|
|
count++;
|
|
cp = buf;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (nlines <= 0 || count == 0)
|
|
break;
|
|
count--;
|
|
if (fseeko(tp, (off_t)sizeof(buf) * count, SEEK_SET) < 0) {
|
|
ret = errno;
|
|
break;
|
|
}
|
|
if (fread(buf, sizeof(buf), (size_t)1, tp) != 1) {
|
|
if (ferror(tp)) {
|
|
ret = errno;
|
|
break;
|
|
}
|
|
ret = EAGAIN;
|
|
break;
|
|
}
|
|
cp = buf + sizeof(buf);
|
|
}
|
|
|
|
if (ret || nlines > 0)
|
|
goto out3;
|
|
|
|
if (fseeko(fp, (off_t)0, SEEK_SET) == (off_t)-1) {
|
|
ret = errno;
|
|
goto out3;
|
|
}
|
|
|
|
if (fseeko(tp, (off_t)sizeof(buf) * count + (cp - buf), SEEK_SET) ==
|
|
(off_t)-1) {
|
|
ret = errno;
|
|
goto out3;
|
|
}
|
|
|
|
for(;;) {
|
|
if ((left = (ssize_t)fread(buf, (size_t)1, sizeof(buf), tp)) == 0) {
|
|
if (ferror(fp))
|
|
ret = errno;
|
|
break;
|
|
}
|
|
if (fwrite(buf, (size_t)left, (size_t)1, fp) != 1) {
|
|
ret = errno;
|
|
break;
|
|
}
|
|
}
|
|
fflush(fp);
|
|
if((off = ftello(fp)) > 0)
|
|
(void)ftruncate(fileno(fp), off);
|
|
out3:
|
|
fclose(tp);
|
|
out2:
|
|
unlink(template);
|
|
out1:
|
|
fclose(fp);
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
/*
|
|
* read history from a file given
|
|
*/
|
|
int
|
|
read_history(const char *filename)
|
|
{
|
|
HistEvent ev;
|
|
|
|
if (h == NULL || e == NULL)
|
|
rl_initialize();
|
|
if (filename == NULL && (filename = _default_history_file()) == NULL)
|
|
return errno;
|
|
return history(h, &ev, H_LOAD, filename) == -1 ?
|
|
(errno ? errno : EINVAL) : 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* write history to a file given
|
|
*/
|
|
int
|
|
write_history(const char *filename)
|
|
{
|
|
HistEvent ev;
|
|
|
|
if (h == NULL || e == NULL)
|
|
rl_initialize();
|
|
if (filename == NULL && (filename = _default_history_file()) == NULL)
|
|
return errno;
|
|
return history(h, &ev, H_SAVE, filename) == -1 ?
|
|
(errno ? errno : EINVAL) : 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* returns history ``num''th event
|
|
*
|
|
* returned pointer points to static variable
|
|
*/
|
|
HIST_ENTRY *
|
|
history_get(int num)
|
|
{
|
|
static HIST_ENTRY she;
|
|
HistEvent ev;
|
|
int curr_num;
|
|
|
|
if (h == NULL || e == NULL)
|
|
rl_initialize();
|
|
|
|
/* save current position */
|
|
if (history(h, &ev, H_CURR) != 0)
|
|
return NULL;
|
|
curr_num = ev.num;
|
|
|
|
/* start from the oldest */
|
|
if (history(h, &ev, H_LAST) != 0)
|
|
return NULL; /* error */
|
|
|
|
/* look forwards for event matching specified offset */
|
|
if (history(h, &ev, H_NEXT_EVDATA, num, &she.data))
|
|
return NULL;
|
|
|
|
she.line = ev.str;
|
|
|
|
/* restore pointer to where it was */
|
|
(void)history(h, &ev, H_SET, curr_num);
|
|
|
|
return &she;
|
|
}
|
|
|
|
|
|
/*
|
|
* add the line to history table
|
|
*/
|
|
int
|
|
add_history(const char *line)
|
|
{
|
|
HistEvent ev;
|
|
|
|
if (line == NULL)
|
|
return 0;
|
|
|
|
if (h == NULL || e == NULL)
|
|
rl_initialize();
|
|
|
|
(void)history(h, &ev, H_ENTER, line);
|
|
if (history(h, &ev, H_GETSIZE) == 0)
|
|
history_length = ev.num;
|
|
|
|
return !(history_length > 0); /* return 0 if all is okay */
|
|
}
|
|
|
|
|
|
/*
|
|
* remove the specified entry from the history list and return it.
|
|
*/
|
|
HIST_ENTRY *
|
|
remove_history(int num)
|
|
{
|
|
HIST_ENTRY *he;
|
|
HistEvent ev;
|
|
|
|
if (h == NULL || e == NULL)
|
|
rl_initialize();
|
|
|
|
if ((he = el_malloc(sizeof(*he))) == NULL)
|
|
return NULL;
|
|
|
|
if (history(h, &ev, H_DELDATA, num, &he->data) != 0) {
|
|
el_free(he);
|
|
return NULL;
|
|
}
|
|
|
|
he->line = ev.str;
|
|
if (history(h, &ev, H_GETSIZE) == 0)
|
|
history_length = ev.num;
|
|
|
|
return he;
|
|
}
|
|
|
|
|
|
/*
|
|
* replace the line and data of the num-th entry
|
|
*/
|
|
HIST_ENTRY *
|
|
replace_history_entry(int num, const char *line, histdata_t data)
|
|
{
|
|
HIST_ENTRY *he;
|
|
HistEvent ev;
|
|
int curr_num;
|
|
|
|
if (h == NULL || e == NULL)
|
|
rl_initialize();
|
|
|
|
/* save current position */
|
|
if (history(h, &ev, H_CURR) != 0)
|
|
return NULL;
|
|
curr_num = ev.num;
|
|
|
|
/* start from the oldest */
|
|
if (history(h, &ev, H_LAST) != 0)
|
|
return NULL; /* error */
|
|
|
|
if ((he = el_malloc(sizeof(*he))) == NULL)
|
|
return NULL;
|
|
|
|
/* look forwards for event matching specified offset */
|
|
if (history(h, &ev, H_NEXT_EVDATA, num, &he->data))
|
|
goto out;
|
|
|
|
he->line = strdup(ev.str);
|
|
if (he->line == NULL)
|
|
goto out;
|
|
|
|
if (history(h, &ev, H_REPLACE, line, data))
|
|
goto out;
|
|
|
|
/* restore pointer to where it was */
|
|
if (history(h, &ev, H_SET, curr_num))
|
|
goto out;
|
|
|
|
return he;
|
|
out:
|
|
el_free(he);
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* clear the history list - delete all entries
|
|
*/
|
|
void
|
|
clear_history(void)
|
|
{
|
|
HistEvent ev;
|
|
|
|
if (h == NULL || e == NULL)
|
|
rl_initialize();
|
|
|
|
(void)history(h, &ev, H_CLEAR);
|
|
history_length = 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* returns offset of the current history event
|
|
*/
|
|
int
|
|
where_history(void)
|
|
{
|
|
HistEvent ev;
|
|
int curr_num, off;
|
|
|
|
if (history(h, &ev, H_CURR) != 0)
|
|
return 0;
|
|
curr_num = ev.num;
|
|
|
|
(void)history(h, &ev, H_FIRST);
|
|
off = 1;
|
|
while (ev.num != curr_num && history(h, &ev, H_NEXT) == 0)
|
|
off++;
|
|
|
|
return off;
|
|
}
|
|
|
|
|
|
/*
|
|
* returns current history event or NULL if there is no such event
|
|
*/
|
|
HIST_ENTRY *
|
|
current_history(void)
|
|
{
|
|
|
|
return _move_history(H_CURR);
|
|
}
|
|
|
|
|
|
/*
|
|
* returns total number of bytes history events' data are using
|
|
*/
|
|
int
|
|
history_total_bytes(void)
|
|
{
|
|
HistEvent ev;
|
|
int curr_num;
|
|
size_t size;
|
|
|
|
if (history(h, &ev, H_CURR) != 0)
|
|
return -1;
|
|
curr_num = ev.num;
|
|
|
|
(void)history(h, &ev, H_FIRST);
|
|
size = 0;
|
|
do
|
|
size += strlen(ev.str) * sizeof(*ev.str);
|
|
while (history(h, &ev, H_NEXT) == 0);
|
|
|
|
/* get to the same position as before */
|
|
history(h, &ev, H_PREV_EVENT, curr_num);
|
|
|
|
return (int)size;
|
|
}
|
|
|
|
|
|
/*
|
|
* sets the position in the history list to ``pos''
|
|
*/
|
|
int
|
|
history_set_pos(int pos)
|
|
{
|
|
HistEvent ev;
|
|
int curr_num;
|
|
|
|
if (pos >= history_length || pos < 0)
|
|
return -1;
|
|
|
|
(void)history(h, &ev, H_CURR);
|
|
curr_num = ev.num;
|
|
|
|
/*
|
|
* use H_DELDATA to set to nth history (without delete) by passing
|
|
* (void **)-1
|
|
*/
|
|
if (history(h, &ev, H_DELDATA, pos, (void **)-1)) {
|
|
(void)history(h, &ev, H_SET, curr_num);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* returns previous event in history and shifts pointer accordingly
|
|
*/
|
|
HIST_ENTRY *
|
|
previous_history(void)
|
|
{
|
|
|
|
return _move_history(H_PREV);
|
|
}
|
|
|
|
|
|
/*
|
|
* returns next event in history and shifts pointer accordingly
|
|
*/
|
|
HIST_ENTRY *
|
|
next_history(void)
|
|
{
|
|
|
|
return _move_history(H_NEXT);
|
|
}
|
|
|
|
|
|
/*
|
|
* searches for first history event containing the str
|
|
*/
|
|
int
|
|
history_search(const char *str, int direction)
|
|
{
|
|
HistEvent ev;
|
|
const char *strp;
|
|
int curr_num;
|
|
|
|
if (history(h, &ev, H_CURR) != 0)
|
|
return -1;
|
|
curr_num = ev.num;
|
|
|
|
for (;;) {
|
|
if ((strp = strstr(ev.str, str)) != NULL)
|
|
return (int)(strp - ev.str);
|
|
if (history(h, &ev, direction < 0 ? H_NEXT:H_PREV) != 0)
|
|
break;
|
|
}
|
|
(void)history(h, &ev, H_SET, curr_num);
|
|
return -1;
|
|
}
|
|
|
|
|
|
/*
|
|
* searches for first history event beginning with str
|
|
*/
|
|
int
|
|
history_search_prefix(const char *str, int direction)
|
|
{
|
|
HistEvent ev;
|
|
|
|
return (history(h, &ev, direction < 0 ?
|
|
H_PREV_STR : H_NEXT_STR, str));
|
|
}
|
|
|
|
|
|
/*
|
|
* search for event in history containing str, starting at offset
|
|
* abs(pos); continue backward, if pos<0, forward otherwise
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
history_search_pos(const char *str,
|
|
int direction __attribute__((__unused__)), int pos)
|
|
{
|
|
HistEvent ev;
|
|
int curr_num, off;
|
|
|
|
off = (pos > 0) ? pos : -pos;
|
|
pos = (pos > 0) ? 1 : -1;
|
|
|
|
if (history(h, &ev, H_CURR) != 0)
|
|
return -1;
|
|
curr_num = ev.num;
|
|
|
|
if (history_set_pos(off) != 0 || history(h, &ev, H_CURR) != 0)
|
|
return -1;
|
|
|
|
for (;;) {
|
|
if (strstr(ev.str, str))
|
|
return off;
|
|
if (history(h, &ev, (pos < 0) ? H_PREV : H_NEXT) != 0)
|
|
break;
|
|
}
|
|
|
|
/* set "current" pointer back to previous state */
|
|
(void)history(h, &ev,
|
|
pos < 0 ? H_NEXT_EVENT : H_PREV_EVENT, curr_num);
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
/********************************/
|
|
/* completion functions */
|
|
|
|
char *
|
|
tilde_expand(char *name)
|
|
{
|
|
return fn_tilde_expand(name);
|
|
}
|
|
|
|
char *
|
|
filename_completion_function(const char *name, int state)
|
|
{
|
|
return fn_filename_completion_function(name, state);
|
|
}
|
|
|
|
/*
|
|
* a completion generator for usernames; returns _first_ username
|
|
* which starts with supplied text
|
|
* text contains a partial username preceded by random character
|
|
* (usually '~'); state resets search from start (??? should we do that anyway)
|
|
* it's the caller's responsibility to free the returned value
|
|
*/
|
|
char *
|
|
username_completion_function(const char *text, int state)
|
|
{
|
|
#if defined(HAVE_GETPW_R_POSIX) || defined(HAVE_GETPW_R_DRAFT)
|
|
struct passwd pwres;
|
|
char pwbuf[1024];
|
|
#endif
|
|
struct passwd *pass = NULL;
|
|
|
|
if (text[0] == '\0')
|
|
return NULL;
|
|
|
|
if (*text == '~')
|
|
text++;
|
|
|
|
if (state == 0)
|
|
setpwent();
|
|
|
|
while (
|
|
#if defined(HAVE_GETPW_R_POSIX) || defined(HAVE_GETPW_R_DRAFT)
|
|
getpwent_r(&pwres, pwbuf, sizeof(pwbuf), &pass) == 0 && pass != NULL
|
|
#else
|
|
(pass = getpwent()) != NULL
|
|
#endif
|
|
&& text[0] == pass->pw_name[0]
|
|
&& strcmp(text, pass->pw_name) == 0)
|
|
continue;
|
|
|
|
if (pass == NULL) {
|
|
endpwent();
|
|
return NULL;
|
|
}
|
|
return strdup(pass->pw_name);
|
|
}
|
|
|
|
|
|
/*
|
|
* el-compatible wrapper to send TSTP on ^Z
|
|
*/
|
|
/* ARGSUSED */
|
|
static unsigned char
|
|
_el_rl_tstp(EditLine *el __attribute__((__unused__)), int ch __attribute__((__unused__)))
|
|
{
|
|
(void)kill(0, SIGTSTP);
|
|
return CC_NORM;
|
|
}
|
|
|
|
/*
|
|
* Display list of strings in columnar format on readline's output stream.
|
|
* 'matches' is list of strings, 'len' is number of strings in 'matches',
|
|
* 'max' is maximum length of string in 'matches'.
|
|
*/
|
|
void
|
|
rl_display_match_list(char **matches, int len, int max)
|
|
{
|
|
|
|
fn_display_match_list(e, matches, (size_t)len, (size_t)max);
|
|
}
|
|
|
|
static const char *
|
|
/*ARGSUSED*/
|
|
_rl_completion_append_character_function(const char *dummy
|
|
__attribute__((__unused__)))
|
|
{
|
|
static char buf[2];
|
|
buf[0] = (char)rl_completion_append_character;
|
|
buf[1] = '\0';
|
|
return buf;
|
|
}
|
|
|
|
|
|
/*
|
|
* complete word at current point
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
rl_complete(int ignore __attribute__((__unused__)), int invoking_key)
|
|
{
|
|
#ifdef WIDECHAR
|
|
static ct_buffer_t wbreak_conv, sprefix_conv;
|
|
#endif
|
|
char *breakchars;
|
|
|
|
if (h == NULL || e == NULL)
|
|
rl_initialize();
|
|
|
|
if (rl_inhibit_completion) {
|
|
char arr[2];
|
|
arr[0] = (char)invoking_key;
|
|
arr[1] = '\0';
|
|
el_insertstr(e, arr);
|
|
return CC_REFRESH;
|
|
}
|
|
|
|
if (rl_completion_word_break_hook != NULL)
|
|
breakchars = (*rl_completion_word_break_hook)();
|
|
else
|
|
breakchars = rl_basic_word_break_characters;
|
|
|
|
_rl_update_pos();
|
|
|
|
/* Just look at how many global variables modify this operation! */
|
|
return fn_complete(e,
|
|
(rl_compentry_func_t *)rl_completion_entry_function,
|
|
rl_attempted_completion_function,
|
|
ct_decode_string(rl_basic_word_break_characters, &wbreak_conv),
|
|
ct_decode_string(breakchars, &sprefix_conv),
|
|
_rl_completion_append_character_function,
|
|
(size_t)rl_completion_query_items,
|
|
&rl_completion_type, &rl_attempted_completion_over,
|
|
&rl_point, &rl_end, NULL, NULL, NULL);
|
|
|
|
|
|
}
|
|
|
|
|
|
/* ARGSUSED */
|
|
static unsigned char
|
|
_el_rl_complete(EditLine *el __attribute__((__unused__)), int ch)
|
|
{
|
|
return (unsigned char)rl_complete(0, ch);
|
|
}
|
|
|
|
/*
|
|
* misc other functions
|
|
*/
|
|
|
|
/*
|
|
* bind key c to readline-type function func
|
|
*/
|
|
int
|
|
rl_bind_key(int c, rl_command_func_t *func)
|
|
{
|
|
int retval = -1;
|
|
|
|
if (h == NULL || e == NULL)
|
|
rl_initialize();
|
|
|
|
if (func == rl_insert) {
|
|
/* XXX notice there is no range checking of ``c'' */
|
|
e->el_map.key[c] = ED_INSERT;
|
|
retval = 0;
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
|
|
/*
|
|
* read one key from input - handles chars pushed back
|
|
* to input stream also
|
|
*/
|
|
int
|
|
rl_read_key(void)
|
|
{
|
|
char fooarr[2 * sizeof(int)];
|
|
|
|
if (e == NULL || h == NULL)
|
|
rl_initialize();
|
|
|
|
return el_getc(e, fooarr);
|
|
}
|
|
|
|
|
|
/*
|
|
* reset the terminal
|
|
*/
|
|
/* ARGSUSED */
|
|
void
|
|
rl_reset_terminal(const char *p __attribute__((__unused__)))
|
|
{
|
|
|
|
if (h == NULL || e == NULL)
|
|
rl_initialize();
|
|
el_reset(e);
|
|
}
|
|
|
|
|
|
/*
|
|
* insert character ``c'' back into input stream, ``count'' times
|
|
*/
|
|
int
|
|
rl_insert(int count, int c)
|
|
{
|
|
char arr[2];
|
|
|
|
if (h == NULL || e == NULL)
|
|
rl_initialize();
|
|
|
|
/* XXX - int -> char conversion can lose on multichars */
|
|
arr[0] = (char)c;
|
|
arr[1] = '\0';
|
|
|
|
for (; count > 0; count--)
|
|
el_push(e, arr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rl_insert_text(const char *text)
|
|
{
|
|
if (!text || *text == 0)
|
|
return 0;
|
|
|
|
if (h == NULL || e == NULL)
|
|
rl_initialize();
|
|
|
|
if (el_insertstr(e, text) < 0)
|
|
return 0;
|
|
return (int)strlen(text);
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
int
|
|
rl_newline(int count __attribute__((__unused__)),
|
|
int c __attribute__((__unused__)))
|
|
{
|
|
/*
|
|
* Readline-4.0 appears to ignore the args.
|
|
*/
|
|
return rl_insert(1, '\n');
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
static unsigned char
|
|
rl_bind_wrapper(EditLine *el __attribute__((__unused__)), unsigned char c)
|
|
{
|
|
if (map[c] == NULL)
|
|
return CC_ERROR;
|
|
|
|
_rl_update_pos();
|
|
|
|
(*map[c])(1, c);
|
|
|
|
/* If rl_done was set by the above call, deal with it here */
|
|
if (rl_done)
|
|
return CC_EOF;
|
|
|
|
return CC_NORM;
|
|
}
|
|
|
|
int
|
|
rl_add_defun(const char *name, rl_command_func_t *fun, int c)
|
|
{
|
|
char dest[8];
|
|
if ((size_t)c >= sizeof(map) / sizeof(map[0]) || c < 0)
|
|
return -1;
|
|
map[(unsigned char)c] = fun;
|
|
el_set(e, EL_ADDFN, name, name, rl_bind_wrapper);
|
|
vis(dest, c, VIS_WHITE|VIS_NOSLASH, 0);
|
|
el_set(e, EL_BIND, dest, name, NULL);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
rl_callback_read_char(void)
|
|
{
|
|
int count = 0, done = 0;
|
|
const char *buf = el_gets(e, &count);
|
|
char *wbuf;
|
|
|
|
if (buf == NULL || count-- <= 0)
|
|
return;
|
|
if (count == 0 && buf[0] == e->el_tty.t_c[TS_IO][C_EOF])
|
|
done = 1;
|
|
if (buf[count] == '\n' || buf[count] == '\r')
|
|
done = 2;
|
|
|
|
if (done && rl_linefunc != NULL) {
|
|
el_set(e, EL_UNBUFFERED, 0);
|
|
if (done == 2) {
|
|
if ((wbuf = strdup(buf)) != NULL)
|
|
wbuf[count] = '\0';
|
|
} else
|
|
wbuf = NULL;
|
|
(*(void (*)(const char *))rl_linefunc)(wbuf);
|
|
el_set(e, EL_UNBUFFERED, 1);
|
|
}
|
|
}
|
|
|
|
void
|
|
rl_callback_handler_install(const char *prompt, rl_vcpfunc_t *linefunc)
|
|
{
|
|
if (e == NULL) {
|
|
rl_initialize();
|
|
}
|
|
(void)rl_set_prompt(prompt);
|
|
rl_linefunc = linefunc;
|
|
el_set(e, EL_UNBUFFERED, 1);
|
|
}
|
|
|
|
void
|
|
rl_callback_handler_remove(void)
|
|
{
|
|
el_set(e, EL_UNBUFFERED, 0);
|
|
rl_linefunc = NULL;
|
|
}
|
|
|
|
void
|
|
rl_redisplay(void)
|
|
{
|
|
char a[2];
|
|
a[0] = (char)e->el_tty.t_c[TS_IO][C_REPRINT];
|
|
a[1] = '\0';
|
|
el_push(e, a);
|
|
}
|
|
|
|
int
|
|
rl_get_previous_history(int count, int key)
|
|
{
|
|
char a[2];
|
|
a[0] = (char)key;
|
|
a[1] = '\0';
|
|
while (count--)
|
|
el_push(e, a);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
/*ARGSUSED*/
|
|
rl_prep_terminal(int meta_flag __attribute__((__unused__)))
|
|
{
|
|
el_set(e, EL_PREP_TERM, 1);
|
|
}
|
|
|
|
void
|
|
rl_deprep_terminal(void)
|
|
{
|
|
el_set(e, EL_PREP_TERM, 0);
|
|
}
|
|
|
|
int
|
|
rl_read_init_file(const char *s)
|
|
{
|
|
return el_source(e, s);
|
|
}
|
|
|
|
int
|
|
rl_parse_and_bind(const char *line)
|
|
{
|
|
const char **argv;
|
|
int argc;
|
|
Tokenizer *tok;
|
|
|
|
tok = tok_init(NULL);
|
|
tok_str(tok, line, &argc, &argv);
|
|
argc = el_parse(e, argc, argv);
|
|
tok_end(tok);
|
|
return argc ? 1 : 0;
|
|
}
|
|
|
|
int
|
|
rl_variable_bind(const char *var, const char *value)
|
|
{
|
|
/*
|
|
* The proper return value is undocument, but this is what the
|
|
* readline source seems to do.
|
|
*/
|
|
return el_set(e, EL_BIND, "", var, value, NULL) == -1 ? 1 : 0;
|
|
}
|
|
|
|
void
|
|
rl_stuff_char(int c)
|
|
{
|
|
char buf[2];
|
|
|
|
buf[0] = (char)c;
|
|
buf[1] = '\0';
|
|
el_insertstr(e, buf);
|
|
}
|
|
|
|
static int
|
|
_rl_event_read_char(EditLine *el, char *cp)
|
|
{
|
|
int n;
|
|
ssize_t num_read = 0;
|
|
|
|
*cp = '\0';
|
|
while (rl_event_hook) {
|
|
|
|
(*rl_event_hook)();
|
|
|
|
#if defined(FIONREAD)
|
|
if (ioctl(el->el_infd, FIONREAD, &n) < 0)
|
|
return -1;
|
|
if (n)
|
|
num_read = read(el->el_infd, cp, (size_t)1);
|
|
else
|
|
num_read = 0;
|
|
#elif defined(F_SETFL) && defined(O_NDELAY)
|
|
if ((n = fcntl(el->el_infd, F_GETFL, 0)) < 0)
|
|
return -1;
|
|
if (fcntl(el->el_infd, F_SETFL, n|O_NDELAY) < 0)
|
|
return -1;
|
|
num_read = read(el->el_infd, cp, 1);
|
|
if (fcntl(el->el_infd, F_SETFL, n))
|
|
return -1;
|
|
#else
|
|
/* not non-blocking, but what you gonna do? */
|
|
num_read = read(el->el_infd, cp, 1);
|
|
return -1;
|
|
#endif
|
|
|
|
if (num_read < 0 && errno == EAGAIN)
|
|
continue;
|
|
if (num_read == 0)
|
|
continue;
|
|
break;
|
|
}
|
|
if (!rl_event_hook)
|
|
el_set(el, EL_GETCFN, EL_BUILTIN_GETCFN);
|
|
return (int)num_read;
|
|
}
|
|
|
|
static void
|
|
_rl_update_pos(void)
|
|
{
|
|
const LineInfo *li = el_line(e);
|
|
|
|
rl_point = (int)(li->cursor - li->buffer);
|
|
rl_end = (int)(li->lastchar - li->buffer);
|
|
}
|
|
|
|
void
|
|
rl_get_screen_size(int *rows, int *cols)
|
|
{
|
|
if (rows)
|
|
el_get(e, EL_GETTC, "li", rows, (void *)0);
|
|
if (cols)
|
|
el_get(e, EL_GETTC, "co", cols, (void *)0);
|
|
}
|
|
|
|
void
|
|
rl_set_screen_size(int rows, int cols)
|
|
{
|
|
char buf[64];
|
|
(void)snprintf(buf, sizeof(buf), "%d", rows);
|
|
el_set(e, EL_SETTC, "li", buf, NULL);
|
|
(void)snprintf(buf, sizeof(buf), "%d", cols);
|
|
el_set(e, EL_SETTC, "co", buf, NULL);
|
|
}
|
|
|
|
char **
|
|
rl_completion_matches(const char *str, rl_compentry_func_t *fun)
|
|
{
|
|
size_t len, max, i, j, min;
|
|
char **list, *match, *a, *b;
|
|
|
|
len = 1;
|
|
max = 10;
|
|
if ((list = el_malloc(max * sizeof(*list))) == NULL)
|
|
return NULL;
|
|
|
|
while ((match = (*fun)(str, (int)(len - 1))) != NULL) {
|
|
list[len++] = match;
|
|
if (len == max) {
|
|
char **nl;
|
|
max += 10;
|
|
if ((nl = el_realloc(list, max * sizeof(*nl))) == NULL)
|
|
goto out;
|
|
list = nl;
|
|
}
|
|
}
|
|
if (len == 1)
|
|
goto out;
|
|
list[len] = NULL;
|
|
if (len == 2) {
|
|
if ((list[0] = strdup(list[1])) == NULL)
|
|
goto out;
|
|
return list;
|
|
}
|
|
qsort(&list[1], len - 1, sizeof(*list),
|
|
(int (*)(const void *, const void *)) strcmp);
|
|
min = SIZE_T_MAX;
|
|
for (i = 1, a = list[i]; i < len - 1; i++, a = b) {
|
|
b = list[i + 1];
|
|
for (j = 0; a[j] && a[j] == b[j]; j++)
|
|
continue;
|
|
if (min > j)
|
|
min = j;
|
|
}
|
|
if (min == 0 && *str) {
|
|
if ((list[0] = strdup(str)) == NULL)
|
|
goto out;
|
|
} else {
|
|
if ((list[0] = el_malloc((min + 1) * sizeof(*list[0]))) == NULL)
|
|
goto out;
|
|
(void)memcpy(list[0], list[1], min);
|
|
list[0][min] = '\0';
|
|
}
|
|
return list;
|
|
|
|
out:
|
|
el_free(list);
|
|
return NULL;
|
|
}
|
|
|
|
char *
|
|
rl_filename_completion_function (const char *text, int state)
|
|
{
|
|
return fn_filename_completion_function(text, state);
|
|
}
|
|
|
|
void
|
|
rl_forced_update_display(void)
|
|
{
|
|
el_set(e, EL_REFRESH);
|
|
}
|
|
|
|
int
|
|
_rl_abort_internal(void)
|
|
{
|
|
el_beep(e);
|
|
longjmp(topbuf, 1);
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
int
|
|
_rl_qsort_string_compare(char **s1, char **s2)
|
|
{
|
|
return strcoll(*s1, *s2);
|
|
}
|
|
|
|
HISTORY_STATE *
|
|
history_get_history_state(void)
|
|
{
|
|
HISTORY_STATE *hs;
|
|
|
|
if ((hs = el_malloc(sizeof(*hs))) == NULL)
|
|
return NULL;
|
|
hs->length = history_length;
|
|
return hs;
|
|
}
|
|
|
|
int
|
|
/*ARGSUSED*/
|
|
rl_kill_text(int from __attribute__((__unused__)),
|
|
int to __attribute__((__unused__)))
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
Keymap
|
|
rl_make_bare_keymap(void)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
Keymap
|
|
rl_get_keymap(void)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
/*ARGSUSED*/
|
|
rl_set_keymap(Keymap k __attribute__((__unused__)))
|
|
{
|
|
}
|
|
|
|
int
|
|
/*ARGSUSED*/
|
|
rl_generic_bind(int type __attribute__((__unused__)),
|
|
const char * keyseq __attribute__((__unused__)),
|
|
const char * data __attribute__((__unused__)),
|
|
Keymap k __attribute__((__unused__)))
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
/*ARGSUSED*/
|
|
rl_bind_key_in_map(int key __attribute__((__unused__)),
|
|
rl_command_func_t *fun __attribute__((__unused__)),
|
|
Keymap k __attribute__((__unused__)))
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/* unsupported, but needed by python */
|
|
void
|
|
rl_cleanup_after_signal(void)
|
|
{
|
|
}
|
|
|
|
int
|
|
rl_on_new_line(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
rl_free_line_state(void)
|
|
{
|
|
}
|