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Annotation of src/lib/libedit/readline.c, Revision 1.138

1.138   ! mbalmer     1: /*     $NetBSD: readline.c,v 1.137 2016/08/24 13:10:59 christos Exp $  */
1.1       christos    2:
                      3: /*-
                      4:  * Copyright (c) 1997 The NetBSD Foundation, Inc.
                      5:  * All rights reserved.
                      6:  *
                      7:  * This code is derived from software contributed to The NetBSD Foundation
                      8:  * by Jaromir Dolecek.
                      9:  *
                     10:  * Redistribution and use in source and binary forms, with or without
                     11:  * modification, are permitted provided that the following conditions
                     12:  * are met:
                     13:  * 1. Redistributions of source code must retain the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer.
                     15:  * 2. Redistributions in binary form must reproduce the above copyright
                     16:  *    notice, this list of conditions and the following disclaimer in the
                     17:  *    documentation and/or other materials provided with the distribution.
                     18:  *
                     19:  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
                     20:  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
                     21:  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
                     22:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
                     23:  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
                     24:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
                     25:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                     26:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
                     27:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
                     28:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
                     29:  * POSSIBILITY OF SUCH DAMAGE.
                     30:  */
                     31:
1.20      christos   32: #include "config.h"
1.1       christos   33: #if !defined(lint) && !defined(SCCSID)
1.138   ! mbalmer    34: __RCSID("$NetBSD: readline.c,v 1.137 2016/08/24 13:10:59 christos Exp $");
1.1       christos   35: #endif /* not lint && not SCCSID */
                     36:
                     37: #include <sys/types.h>
                     38: #include <sys/stat.h>
1.125     christos   39: #include <ctype.h>
1.1       christos   40: #include <dirent.h>
1.125     christos   41: #include <errno.h>
                     42: #include <fcntl.h>
                     43: #include <limits.h>
1.1       christos   44: #include <pwd.h>
1.125     christos   45: #include <setjmp.h>
                     46: #include <stdint.h>
                     47: #include <stdio.h>
1.1       christos   48: #include <stdlib.h>
1.125     christos   49: #include <string.h>
1.1       christos   50: #include <unistd.h>
1.35      christos   51: #include <vis.h>
1.97      christos   52:
1.79      sketch     53: #include "readline/readline.h"
1.45      christos   54: #include "el.h"
1.128     christos   55: #include "fcns.h"
1.53      dsl        56: #include "filecomplete.h"
1.1       christos   57:
1.68      christos   58: void rl_prep_terminal(int);
                     59: void rl_deprep_terminal(void);
                     60:
1.1       christos   61: /* for rl_complete() */
1.40      christos   62: #define TAB            '\r'
1.1       christos   63:
                     64: /* see comment at the #ifdef for sense of this */
1.40      christos   65: /* #define GDB_411_HACK */
1.1       christos   66:
                     67: /* readline compatibility stuff - look at readline sources/documentation */
                     68: /* to see what these variables mean */
1.11      lukem      69: const char *rl_library_version = "EditLine wrapper";
1.85      christos   70: int rl_readline_version = RL_READLINE_VERSION;
1.20      christos   71: static char empty[] = { '\0' };
                     72: static char expand_chars[] = { ' ', '\t', '\n', '=', '(', '\0' };
                     73: static char break_chars[] = { ' ', '\t', '\n', '"', '\\', '\'', '`', '@', '$',
                     74:     '>', '<', '=', ';', '|', '&', '{', '(', '\0' };
                     75: char *rl_readline_name = empty;
1.11      lukem      76: FILE *rl_instream = NULL;
                     77: FILE *rl_outstream = NULL;
                     78: int rl_point = 0;
                     79: int rl_end = 0;
                     80: char *rl_line_buffer = NULL;
1.117     christos   81: rl_vcpfunc_t *rl_linefunc = NULL;
1.38      christos   82: int rl_done = 0;
                     83: VFunction *rl_event_hook = NULL;
1.70      christos   84: KEYMAP_ENTRY_ARRAY emacs_standard_keymap,
                     85:     emacs_meta_keymap,
                     86:     emacs_ctlx_keymap;
1.108     christos   87: /*
                     88:  * The following is not implemented; we always catch signals in the
                     89:  * libedit fashion: set handlers on entry to el_gets() and clear them
                     90:  * on the way out. This simplistic approach works for most cases; if
                     91:  * it does not work for your application, please let us know.
                     92:  */
                     93: int rl_catch_signals = 1;
                     94: int rl_catch_sigwinch = 1;
1.11      lukem      95:
                     96: int history_base = 1;          /* probably never subject to change */
                     97: int history_length = 0;
1.137     christos   98: int history_offset = 0;
1.11      lukem      99: int max_input_history = 0;
                    100: char history_expansion_char = '!';
                    101: char history_subst_char = '^';
1.20      christos  102: char *history_no_expand_chars = expand_chars;
1.11      lukem     103: Function *history_inhibit_expansion_function = NULL;
1.40      christos  104: char *history_arg_extract(int start, int end, const char *str);
1.11      lukem     105:
                    106: int rl_inhibit_completion = 0;
                    107: int rl_attempted_completion_over = 0;
1.20      christos  108: char *rl_basic_word_break_characters = break_chars;
1.11      lukem     109: char *rl_completer_word_break_characters = NULL;
                    110: char *rl_completer_quote_characters = NULL;
1.117     christos  111: rl_compentry_func_t *rl_completion_entry_function = NULL;
1.103     christos  112: char *(*rl_completion_word_break_hook)(void) = NULL;
1.117     christos  113: rl_completion_func_t *rl_attempted_completion_function = NULL;
1.32      christos  114: Function *rl_pre_input_hook = NULL;
                    115: Function *rl_startup1_hook = NULL;
1.72      christos  116: int (*rl_getc_function)(FILE *) = NULL;
1.32      christos  117: char *rl_terminal_name = NULL;
                    118: int rl_already_prompted = 0;
                    119: int rl_filename_completion_desired = 0;
                    120: int rl_ignore_completion_duplicates = 0;
1.70      christos  121: int readline_echoing_p = 1;
                    122: int _rl_print_completions_horizontally = 0;
1.32      christos  123: VFunction *rl_redisplay_function = NULL;
1.33      christos  124: Function *rl_startup_hook = NULL;
1.34      christos  125: VFunction *rl_completion_display_matches_hook = NULL;
1.68      christos  126: VFunction *rl_prep_term_function = (VFunction *)rl_prep_terminal;
                    127: VFunction *rl_deprep_term_function = (VFunction *)rl_deprep_terminal;
1.85      christos  128: KEYMAP_ENTRY_ARRAY emacs_meta_keymap;
1.1       christos  129:
1.12      jdolecek  130: /*
1.32      christos  131:  * The current prompt string.
                    132:  */
                    133: char *rl_prompt = NULL;
                    134: /*
1.12      jdolecek  135:  * This is set to character indicating type of completion being done by
                    136:  * rl_complete_internal(); this is available for application completion
                    137:  * functions.
                    138:  */
                    139: int rl_completion_type = 0;
                    140:
                    141: /*
                    142:  * If more than this number of items results from query for possible
                    143:  * completions, we ask user if they are sure to really display the list.
                    144:  */
                    145: int rl_completion_query_items = 100;
                    146:
                    147: /*
1.15      jdolecek  148:  * List of characters which are word break characters, but should be left
                    149:  * in the parsed text when it is passed to the completion function.
                    150:  * Shell uses this to help determine what kind of completing to do.
1.12      jdolecek  151:  */
1.53      dsl       152: char *rl_special_prefixes = NULL;
1.15      jdolecek  153:
                    154: /*
                    155:  * This is the character appended to the completed words if at the end of
                    156:  * the line. Default is ' ' (a space).
                    157:  */
                    158: int rl_completion_append_character = ' ';
                    159:
                    160: /* stuff below is used internally by libedit for readline emulation */
                    161:
1.92      christos  162: static History *h = NULL;
1.1       christos  163: static EditLine *e = NULL;
1.116     christos  164: static rl_command_func_t *map[256];
1.70      christos  165: static jmp_buf topbuf;
1.1       christos  166:
                    167: /* internal functions */
1.11      lukem     168: static unsigned char    _el_rl_complete(EditLine *, int);
1.46      christos  169: static unsigned char    _el_rl_tstp(EditLine *, int);
1.11      lukem     170: static char            *_get_prompt(EditLine *);
1.126     christos  171: static int              _getc_function(EditLine *, wchar_t *);
1.40      christos  172: static int              _history_expand_command(const char *, size_t, size_t,
                    173:     char **);
1.11      lukem     174: static char            *_rl_compat_sub(const char *, const char *,
1.40      christos  175:     const char *, int);
1.126     christos  176: static int              _rl_event_read_char(EditLine *, wchar_t *);
1.49      christos  177: static void             _rl_update_pos(void);
1.1       christos  178:
1.137     christos  179: static HIST_ENTRY rl_he;
1.5       christos  180:
                    181: /* ARGSUSED */
1.1       christos  182: static char *
1.30      christos  183: _get_prompt(EditLine *el __attribute__((__unused__)))
1.1       christos  184: {
1.32      christos  185:        rl_already_prompted = 1;
1.96      christos  186:        return rl_prompt;
1.1       christos  187: }
                    188:
1.11      lukem     189:
1.1       christos  190: /*
1.59      christos  191:  * read one key from user defined input function
                    192:  */
                    193: static int
1.61      christos  194: /*ARGSUSED*/
1.126     christos  195: _getc_function(EditLine *el __attribute__((__unused__)), wchar_t *c)
1.59      christos  196: {
                    197:        int i;
                    198:
1.72      christos  199:        i = (*rl_getc_function)(NULL);
1.59      christos  200:        if (i == -1)
                    201:                return 0;
1.126     christos  202:        *c = (wchar_t)i;
1.59      christos  203:        return 1;
                    204: }
                    205:
1.91      christos  206: static void
                    207: _resize_fun(EditLine *el, void *a)
                    208: {
                    209:        const LineInfo *li;
                    210:        char **ap = a;
                    211:
                    212:        li = el_line(el);
                    213:        /* a cheesy way to get rid of const cast. */
1.98      christos  214:        *ap = memchr(li->buffer, *li->buffer, (size_t)1);
1.91      christos  215: }
                    216:
1.85      christos  217: static const char *
                    218: _default_history_file(void)
                    219: {
                    220:        struct passwd *p;
1.109     christos  221:        static char *path;
                    222:        size_t len;
1.85      christos  223:
1.109     christos  224:        if (path)
1.85      christos  225:                return path;
1.109     christos  226:
1.85      christos  227:        if ((p = getpwuid(getuid())) == NULL)
                    228:                return NULL;
1.109     christos  229:
                    230:        len = strlen(p->pw_dir) + sizeof("/.history");
                    231:        if ((path = malloc(len)) == NULL)
                    232:                return NULL;
                    233:
                    234:        (void)snprintf(path, len, "%s/.history", p->pw_dir);
1.85      christos  235:        return path;
                    236: }
1.59      christos  237:
                    238: /*
1.7       simonb    239:  * READLINE compatibility stuff
1.1       christos  240:  */
                    241:
                    242: /*
1.78      christos  243:  * Set the prompt
                    244:  */
                    245: int
                    246: rl_set_prompt(const char *prompt)
                    247: {
1.82      christos  248:        char *p;
                    249:
1.78      christos  250:        if (!prompt)
                    251:                prompt = "";
1.125     christos  252:        if (rl_prompt != NULL && strcmp(rl_prompt, prompt) == 0)
1.78      christos  253:                return 0;
                    254:        if (rl_prompt)
1.95      christos  255:                el_free(rl_prompt);
1.78      christos  256:        rl_prompt = strdup(prompt);
1.82      christos  257:        if (rl_prompt == NULL)
                    258:                return -1;
                    259:
                    260:        while ((p = strchr(rl_prompt, RL_PROMPT_END_IGNORE)) != NULL)
                    261:                *p = RL_PROMPT_START_IGNORE;
                    262:
                    263:        return 0;
1.78      christos  264: }
                    265:
                    266: /*
1.1       christos  267:  * initialize rl compat stuff
                    268:  */
                    269: int
1.11      lukem     270: rl_initialize(void)
1.1       christos  271: {
1.92      christos  272:        HistEvent ev;
1.18      christos  273:        int editmode = 1;
                    274:        struct termios t;
1.1       christos  275:
                    276:        if (e != NULL)
                    277:                el_end(e);
                    278:        if (h != NULL)
1.92      christos  279:                history_end(h);
1.1       christos  280:
                    281:        if (!rl_instream)
                    282:                rl_instream = stdin;
                    283:        if (!rl_outstream)
                    284:                rl_outstream = stdout;
1.18      christos  285:
                    286:        /*
                    287:         * See if we don't really want to run the editor
                    288:         */
                    289:        if (tcgetattr(fileno(rl_instream), &t) != -1 && (t.c_lflag & ECHO) == 0)
                    290:                editmode = 0;
                    291:
1.4       christos  292:        e = el_init(rl_readline_name, rl_instream, rl_outstream, stderr);
1.18      christos  293:
                    294:        if (!editmode)
1.92      christos  295:                el_set(e, EL_EDITMODE, 0);
1.1       christos  296:
1.92      christos  297:        h = history_init();
1.1       christos  298:        if (!e || !h)
1.96      christos  299:                return -1;
1.1       christos  300:
1.92      christos  301:        history(h, &ev, H_SETSIZE, INT_MAX);    /* unlimited */
1.1       christos  302:        history_length = 0;
                    303:        max_input_history = INT_MAX;
                    304:        el_set(e, EL_HIST, history, h);
                    305:
1.91      christos  306:        /* Setup resize function */
                    307:        el_set(e, EL_RESIZE, _resize_fun, &rl_line_buffer);
                    308:
1.59      christos  309:        /* setup getc function if valid */
                    310:        if (rl_getc_function)
                    311:                el_set(e, EL_GETCFN, _getc_function);
                    312:
1.1       christos  313:        /* for proper prompt printing in readline() */
1.78      christos  314:        if (rl_set_prompt("") == -1) {
1.92      christos  315:                history_end(h);
1.23      christos  316:                el_end(e);
                    317:                return -1;
                    318:        }
1.82      christos  319:        el_set(e, EL_PROMPT, _get_prompt, RL_PROMPT_START_IGNORE);
1.39      christos  320:        el_set(e, EL_SIGNAL, rl_catch_signals);
1.1       christos  321:
                    322:        /* set default mode to "emacs"-style and read setting afterwards */
1.112     christos  323:        /* so this can be overridden */
1.1       christos  324:        el_set(e, EL_EDITOR, "emacs");
1.32      christos  325:        if (rl_terminal_name != NULL)
                    326:                el_set(e, EL_TERMINAL, rl_terminal_name);
                    327:        else
                    328:                el_get(e, EL_TERMINAL, &rl_terminal_name);
1.1       christos  329:
1.12      jdolecek  330:        /*
1.35      christos  331:         * Word completion - this has to go AFTER rebinding keys
1.12      jdolecek  332:         * to emacs-style.
                    333:         */
1.1       christos  334:        el_set(e, EL_ADDFN, "rl_complete",
1.35      christos  335:            "ReadLine compatible completion function",
1.11      lukem     336:            _el_rl_complete);
1.1       christos  337:        el_set(e, EL_BIND, "^I", "rl_complete", NULL);
1.46      christos  338:
                    339:        /*
                    340:         * Send TSTP when ^Z is pressed.
                    341:         */
                    342:        el_set(e, EL_ADDFN, "rl_tstp",
                    343:            "ReadLine compatible suspend function",
                    344:            _el_rl_tstp);
                    345:        el_set(e, EL_BIND, "^Z", "rl_tstp", NULL);
1.125     christos  346:
1.114     christos  347:        /*
                    348:         * Set some readline compatible key-bindings.
                    349:         */
                    350:        el_set(e, EL_BIND, "^R", "em-inc-search-prev", NULL);
                    351:
                    352:        /*
                    353:         * Allow the use of Home/End keys.
                    354:         */
                    355:        el_set(e, EL_BIND, "\\e[1~", "ed-move-to-beg", NULL);
                    356:        el_set(e, EL_BIND, "\\e[4~", "ed-move-to-end", NULL);
                    357:        el_set(e, EL_BIND, "\\e[7~", "ed-move-to-beg", NULL);
                    358:        el_set(e, EL_BIND, "\\e[8~", "ed-move-to-end", NULL);
                    359:        el_set(e, EL_BIND, "\\e[H", "ed-move-to-beg", NULL);
                    360:        el_set(e, EL_BIND, "\\e[F", "ed-move-to-end", NULL);
                    361:
                    362:        /*
                    363:         * Allow the use of the Delete/Insert keys.
                    364:         */
                    365:        el_set(e, EL_BIND, "\\e[3~", "ed-delete-next-char", NULL);
                    366:        el_set(e, EL_BIND, "\\e[2~", "ed-quoted-insert", NULL);
                    367:
                    368:        /*
                    369:         * Ctrl-left-arrow and Ctrl-right-arrow for word moving.
                    370:         */
                    371:        el_set(e, EL_BIND, "\\e[1;5C", "em-next-word", NULL);
                    372:        el_set(e, EL_BIND, "\\e[1;5D", "ed-prev-word", NULL);
                    373:        el_set(e, EL_BIND, "\\e[5C", "em-next-word", NULL);
1.138   ! mbalmer   374:        el_set(e, EL_BIND, "\\e[5D", "ed-prev-word", NULL);
1.114     christos  375:        el_set(e, EL_BIND, "\\e\\e[C", "em-next-word", NULL);
                    376:        el_set(e, EL_BIND, "\\e\\e[D", "ed-prev-word", NULL);
                    377:
1.1       christos  378:        /* read settings from configuration file */
                    379:        el_source(e, NULL);
                    380:
1.12      jdolecek  381:        /*
                    382:         * Unfortunately, some applications really do use rl_point
                    383:         * and rl_line_buffer directly.
                    384:         */
1.91      christos  385:        _resize_fun(e, &rl_line_buffer);
1.49      christos  386:        _rl_update_pos();
1.1       christos  387:
1.32      christos  388:        if (rl_startup_hook)
                    389:                (*rl_startup_hook)(NULL, 0);
                    390:
1.96      christos  391:        return 0;
1.1       christos  392: }
                    393:
1.11      lukem     394:
1.1       christos  395: /*
                    396:  * read one line from input stream and return it, chomping
                    397:  * trailing newline (if there is any)
                    398:  */
                    399: char *
1.70      christos  400: readline(const char *p)
1.1       christos  401: {
1.92      christos  402:        HistEvent ev;
1.70      christos  403:        const char * volatile prompt = p;
1.3       thorpej   404:        int count;
1.1       christos  405:        const char *ret;
1.20      christos  406:        char *buf;
1.38      christos  407:        static int used_event_hook;
1.1       christos  408:
                    409:        if (e == NULL || h == NULL)
                    410:                rl_initialize();
                    411:
1.38      christos  412:        rl_done = 0;
                    413:
1.70      christos  414:        (void)setjmp(topbuf);
                    415:
1.9       jdolecek  416:        /* update prompt accordingly to what has been passed */
1.78      christos  417:        if (rl_set_prompt(prompt) == -1)
                    418:                return NULL;
1.32      christos  419:
                    420:        if (rl_pre_input_hook)
                    421:                (*rl_pre_input_hook)(NULL, 0);
                    422:
1.38      christos  423:        if (rl_event_hook && !(e->el_flags&NO_TTY)) {
                    424:                el_set(e, EL_GETCFN, _rl_event_read_char);
                    425:                used_event_hook = 1;
                    426:        }
                    427:
                    428:        if (!rl_event_hook && used_event_hook) {
                    429:                el_set(e, EL_GETCFN, EL_BUILTIN_GETCFN);
                    430:                used_event_hook = 0;
                    431:        }
                    432:
1.32      christos  433:        rl_already_prompted = 0;
                    434:
1.1       christos  435:        /* get one line from input stream */
                    436:        ret = el_gets(e, &count);
                    437:
                    438:        if (ret && count > 0) {
1.5       christos  439:                int lastidx;
1.1       christos  440:
1.20      christos  441:                buf = strdup(ret);
1.23      christos  442:                if (buf == NULL)
                    443:                        return NULL;
1.1       christos  444:                lastidx = count - 1;
1.20      christos  445:                if (buf[lastidx] == '\n')
                    446:                        buf[lastidx] = '\0';
1.1       christos  447:        } else
1.20      christos  448:                buf = NULL;
1.1       christos  449:
1.92      christos  450:        history(h, &ev, H_GETSIZE);
1.1       christos  451:        history_length = ev.num;
                    452:
1.20      christos  453:        return buf;
1.1       christos  454: }
                    455:
                    456: /*
                    457:  * history functions
                    458:  */
                    459:
                    460: /*
                    461:  * is normally called before application starts to use
                    462:  * history expansion functions
                    463:  */
                    464: void
1.11      lukem     465: using_history(void)
1.1       christos  466: {
                    467:        if (h == NULL || e == NULL)
                    468:                rl_initialize();
1.137     christos  469:        history_offset = history_length;
1.1       christos  470: }
                    471:
1.11      lukem     472:
1.1       christos  473: /*
                    474:  * substitute ``what'' with ``with'', returning resulting string; if
1.29      wiz       475:  * globally == 1, substitutes all occurrences of what, otherwise only the
1.1       christos  476:  * first one
                    477:  */
1.11      lukem     478: static char *
                    479: _rl_compat_sub(const char *str, const char *what, const char *with,
                    480:     int globally)
                    481: {
1.40      christos  482:        const   char    *s;
                    483:        char    *r, *result;
                    484:        size_t  len, with_len, what_len;
1.1       christos  485:
1.40      christos  486:        len = strlen(str);
                    487:        with_len = strlen(with);
                    488:        what_len = strlen(what);
                    489:
                    490:        /* calculate length we need for result */
                    491:        s = str;
                    492:        while (*s) {
                    493:                if (*s == *what && !strncmp(s, what, what_len)) {
                    494:                        len += with_len - what_len;
                    495:                        if (!globally)
                    496:                                break;
                    497:                        s += what_len;
                    498:                } else
                    499:                        s++;
                    500:        }
1.95      christos  501:        r = result = el_malloc((len + 1) * sizeof(*r));
1.23      christos  502:        if (result == NULL)
                    503:                return NULL;
1.40      christos  504:        s = str;
                    505:        while (*s) {
                    506:                if (*s == *what && !strncmp(s, what, what_len)) {
                    507:                        (void)strncpy(r, with, with_len);
                    508:                        r += with_len;
                    509:                        s += what_len;
                    510:                        if (!globally) {
                    511:                                (void)strcpy(r, s);
1.96      christos  512:                                return result;
1.1       christos  513:                        }
1.40      christos  514:                } else
                    515:                        *r++ = *s++;
                    516:        }
1.76      christos  517:        *r = '\0';
1.96      christos  518:        return result;
1.40      christos  519: }
                    520:
                    521: static char    *last_search_pat;       /* last !?pat[?] search pattern */
                    522: static char    *last_search_match;     /* last !?pat[?] that matched */
                    523:
                    524: const char *
                    525: get_history_event(const char *cmd, int *cindex, int qchar)
                    526: {
                    527:        int idx, sign, sub, num, begin, ret;
                    528:        size_t len;
                    529:        char    *pat;
                    530:        const char *rptr;
1.92      christos  531:        HistEvent ev;
1.40      christos  532:
                    533:        idx = *cindex;
                    534:        if (cmd[idx++] != history_expansion_char)
1.96      christos  535:                return NULL;
1.40      christos  536:
                    537:        /* find out which event to take */
1.76      christos  538:        if (cmd[idx] == history_expansion_char || cmd[idx] == '\0') {
1.92      christos  539:                if (history(h, &ev, H_FIRST) != 0)
1.96      christos  540:                        return NULL;
1.40      christos  541:                *cindex = cmd[idx]? (idx + 1):idx;
1.92      christos  542:                return ev.str;
1.40      christos  543:        }
                    544:        sign = 0;
                    545:        if (cmd[idx] == '-') {
                    546:                sign = 1;
                    547:                idx++;
                    548:        }
                    549:
                    550:        if ('0' <= cmd[idx] && cmd[idx] <= '9') {
1.137     christos  551:                HIST_ENTRY *he;
1.40      christos  552:
                    553:                num = 0;
                    554:                while (cmd[idx] && '0' <= cmd[idx] && cmd[idx] <= '9') {
                    555:                        num = num * 10 + cmd[idx] - '0';
                    556:                        idx++;
                    557:                }
                    558:                if (sign)
                    559:                        num = history_length - num + 1;
                    560:
1.137     christos  561:                if (!(he = history_get(num)))
1.96      christos  562:                        return NULL;
1.40      christos  563:
                    564:                *cindex = idx;
1.137     christos  565:                return he->line;
1.40      christos  566:        }
                    567:        sub = 0;
                    568:        if (cmd[idx] == '?') {
                    569:                sub = 1;
                    570:                idx++;
                    571:        }
                    572:        begin = idx;
                    573:        while (cmd[idx]) {
                    574:                if (cmd[idx] == '\n')
                    575:                        break;
                    576:                if (sub && cmd[idx] == '?')
                    577:                        break;
                    578:                if (!sub && (cmd[idx] == ':' || cmd[idx] == ' '
                    579:                                    || cmd[idx] == '\t' || cmd[idx] == qchar))
                    580:                        break;
                    581:                idx++;
                    582:        }
1.99      christos  583:        len = (size_t)idx - (size_t)begin;
1.40      christos  584:        if (sub && cmd[idx] == '?')
                    585:                idx++;
                    586:        if (sub && len == 0 && last_search_pat && *last_search_pat)
                    587:                pat = last_search_pat;
                    588:        else if (len == 0)
1.96      christos  589:                return NULL;
1.40      christos  590:        else {
1.95      christos  591:                if ((pat = el_malloc((len + 1) * sizeof(*pat))) == NULL)
1.40      christos  592:                        return NULL;
                    593:                (void)strncpy(pat, cmd + begin, len);
                    594:                pat[len] = '\0';
                    595:        }
                    596:
1.92      christos  597:        if (history(h, &ev, H_CURR) != 0) {
1.40      christos  598:                if (pat != last_search_pat)
1.95      christos  599:                        el_free(pat);
1.96      christos  600:                return NULL;
1.40      christos  601:        }
                    602:        num = ev.num;
                    603:
                    604:        if (sub) {
                    605:                if (pat != last_search_pat) {
                    606:                        if (last_search_pat)
1.95      christos  607:                                el_free(last_search_pat);
1.40      christos  608:                        last_search_pat = pat;
1.1       christos  609:                }
1.40      christos  610:                ret = history_search(pat, -1);
                    611:        } else
                    612:                ret = history_search_prefix(pat, -1);
                    613:
                    614:        if (ret == -1) {
                    615:                /* restore to end of list on failed search */
1.92      christos  616:                history(h, &ev, H_FIRST);
1.40      christos  617:                (void)fprintf(rl_outstream, "%s: Event not found\n", pat);
                    618:                if (pat != last_search_pat)
1.95      christos  619:                        el_free(pat);
1.96      christos  620:                return NULL;
1.40      christos  621:        }
                    622:
                    623:        if (sub && len) {
                    624:                if (last_search_match && last_search_match != pat)
1.95      christos  625:                        el_free(last_search_match);
1.40      christos  626:                last_search_match = pat;
                    627:        }
                    628:
                    629:        if (pat != last_search_pat)
1.95      christos  630:                el_free(pat);
1.40      christos  631:
1.92      christos  632:        if (history(h, &ev, H_CURR) != 0)
1.96      christos  633:                return NULL;
1.40      christos  634:        *cindex = idx;
1.92      christos  635:        rptr = ev.str;
1.40      christos  636:
                    637:        /* roll back to original position */
1.92      christos  638:        (void)history(h, &ev, H_SET, num);
1.1       christos  639:
1.40      christos  640:        return rptr;
1.1       christos  641: }
                    642:
                    643: /*
                    644:  * the real function doing history expansion - takes as argument command
                    645:  * to do and data upon which the command should be executed
                    646:  * does expansion the way I've understood readline documentation
                    647:  *
                    648:  * returns 0 if data was not modified, 1 if it was and 2 if the string
                    649:  * should be only printed and not executed; in case of error,
                    650:  * returns -1 and *result points to NULL
1.113     snj       651:  * it's the caller's responsibility to free() the string returned in *result
1.1       christos  652:  */
                    653: static int
1.40      christos  654: _history_expand_command(const char *command, size_t offs, size_t cmdlen,
                    655:     char **result)
1.11      lukem     656: {
1.40      christos  657:        char *tmp, *search = NULL, *aptr;
                    658:        const char *ptr, *cmd;
1.11      lukem     659:        static char *from = NULL, *to = NULL;
1.40      christos  660:        int start, end, idx, has_mods = 0;
                    661:        int p_on = 0, g_on = 0;
1.1       christos  662:
                    663:        *result = NULL;
1.40      christos  664:        aptr = NULL;
1.41      christos  665:        ptr = NULL;
1.1       christos  666:
1.40      christos  667:        /* First get event specifier */
                    668:        idx = 0;
1.1       christos  669:
1.40      christos  670:        if (strchr(":^*$", command[offs + 1])) {
                    671:                char str[4];
                    672:                /*
                    673:                * "!:" is shorthand for "!!:".
                    674:                * "!^", "!*" and "!$" are shorthand for
                    675:                * "!!:^", "!!:*" and "!!:$" respectively.
                    676:                */
                    677:                str[0] = str[1] = '!';
                    678:                str[2] = '0';
                    679:                ptr = get_history_event(str, &idx, 0);
                    680:                idx = (command[offs + 1] == ':')? 1:0;
                    681:                has_mods = 1;
1.1       christos  682:        } else {
1.40      christos  683:                if (command[offs + 1] == '#') {
                    684:                        /* use command so far */
1.95      christos  685:                        if ((aptr = el_malloc((offs + 1) * sizeof(*aptr)))
                    686:                            == NULL)
1.40      christos  687:                                return -1;
                    688:                        (void)strncpy(aptr, command, offs);
                    689:                        aptr[offs] = '\0';
                    690:                        idx = 1;
1.1       christos  691:                } else {
1.40      christos  692:                        int     qchar;
                    693:
                    694:                        qchar = (offs > 0 && command[offs - 1] == '"')? '"':0;
                    695:                        ptr = get_history_event(command + offs, &idx, qchar);
                    696:                }
1.99      christos  697:                has_mods = command[offs + (size_t)idx] == ':';
1.40      christos  698:        }
1.1       christos  699:
1.40      christos  700:        if (ptr == NULL && aptr == NULL)
1.96      christos  701:                return -1;
1.1       christos  702:
1.40      christos  703:        if (!has_mods) {
1.85      christos  704:                *result = strdup(aptr ? aptr : ptr);
1.40      christos  705:                if (aptr)
1.95      christos  706:                        el_free(aptr);
1.85      christos  707:                if (*result == NULL)
                    708:                        return -1;
1.96      christos  709:                return 1;
1.40      christos  710:        }
                    711:
                    712:        cmd = command + offs + idx + 1;
                    713:
                    714:        /* Now parse any word designators */
                    715:
                    716:        if (*cmd == '%')        /* last word matched by ?pat? */
                    717:                tmp = strdup(last_search_match? last_search_match:"");
                    718:        else if (strchr("^*$-0123456789", *cmd)) {
                    719:                start = end = -1;
                    720:                if (*cmd == '^')
                    721:                        start = end = 1, cmd++;
                    722:                else if (*cmd == '$')
                    723:                        start = -1, cmd++;
                    724:                else if (*cmd == '*')
                    725:                        start = 1, cmd++;
                    726:               else if (*cmd == '-' || isdigit((unsigned char) *cmd)) {
                    727:                        start = 0;
                    728:                        while (*cmd && '0' <= *cmd && *cmd <= '9')
                    729:                                start = start * 10 + *cmd++ - '0';
                    730:
                    731:                        if (*cmd == '-') {
                    732:                                if (isdigit((unsigned char) cmd[1])) {
                    733:                                        cmd++;
                    734:                                        end = 0;
                    735:                                        while (*cmd && '0' <= *cmd && *cmd <= '9')
                    736:                                                end = end * 10 + *cmd++ - '0';
                    737:                                } else if (cmd[1] == '$') {
                    738:                                        cmd += 2;
                    739:                                        end = -1;
                    740:                                } else {
                    741:                                        cmd++;
                    742:                                        end = -2;
                    743:                                }
                    744:                        } else if (*cmd == '*')
                    745:                                end = -1, cmd++;
1.1       christos  746:                        else
1.40      christos  747:                                end = start;
                    748:                }
                    749:                tmp = history_arg_extract(start, end, aptr? aptr:ptr);
                    750:                if (tmp == NULL) {
                    751:                        (void)fprintf(rl_outstream, "%s: Bad word specifier",
                    752:                            command + offs + idx);
                    753:                        if (aptr)
1.95      christos  754:                                el_free(aptr);
1.96      christos  755:                        return -1;
1.40      christos  756:                }
                    757:        } else
                    758:                tmp = strdup(aptr? aptr:ptr);
1.1       christos  759:
1.40      christos  760:        if (aptr)
1.95      christos  761:                el_free(aptr);
1.1       christos  762:
1.77      lukem     763:        if (*cmd == '\0' || ((size_t)(cmd - (command + offs)) >= cmdlen)) {
1.40      christos  764:                *result = tmp;
1.96      christos  765:                return 1;
1.1       christos  766:        }
                    767:
                    768:        for (; *cmd; cmd++) {
                    769:                if (*cmd == ':')
                    770:                        continue;
1.40      christos  771:                else if (*cmd == 'h') {         /* remove trailing path */
                    772:                        if ((aptr = strrchr(tmp, '/')) != NULL)
1.76      christos  773:                                *aptr = '\0';
1.40      christos  774:                } else if (*cmd == 't') {       /* remove leading path */
                    775:                        if ((aptr = strrchr(tmp, '/')) != NULL) {
                    776:                                aptr = strdup(aptr + 1);
1.95      christos  777:                                el_free(tmp);
1.40      christos  778:                                tmp = aptr;
                    779:                        }
                    780:                } else if (*cmd == 'r') {       /* remove trailing suffix */
                    781:                        if ((aptr = strrchr(tmp, '.')) != NULL)
1.76      christos  782:                                *aptr = '\0';
1.40      christos  783:                } else if (*cmd == 'e') {       /* remove all but suffix */
                    784:                        if ((aptr = strrchr(tmp, '.')) != NULL) {
                    785:                                aptr = strdup(aptr);
1.95      christos  786:                                el_free(tmp);
1.40      christos  787:                                tmp = aptr;
                    788:                        }
                    789:                } else if (*cmd == 'p')         /* print only */
                    790:                        p_on = 1;
1.1       christos  791:                else if (*cmd == 'g')
                    792:                        g_on = 2;
                    793:                else if (*cmd == 's' || *cmd == '&') {
1.11      lukem     794:                        char *what, *with, delim;
1.30      christos  795:                        size_t len, from_len;
1.5       christos  796:                        size_t size;
1.1       christos  797:
                    798:                        if (*cmd == '&' && (from == NULL || to == NULL))
                    799:                                continue;
                    800:                        else if (*cmd == 's') {
                    801:                                delim = *(++cmd), cmd++;
                    802:                                size = 16;
1.95      christos  803:                                what = el_realloc(from, size * sizeof(*what));
1.23      christos  804:                                if (what == NULL) {
1.95      christos  805:                                        el_free(from);
                    806:                                        el_free(tmp);
1.28      christos  807:                                        return 0;
1.23      christos  808:                                }
1.1       christos  809:                                len = 0;
                    810:                                for (; *cmd && *cmd != delim; cmd++) {
1.40      christos  811:                                        if (*cmd == '\\' && cmd[1] == delim)
1.1       christos  812:                                                cmd++;
1.23      christos  813:                                        if (len >= size) {
                    814:                                                char *nwhat;
1.95      christos  815:                                                nwhat = el_realloc(what,
                    816:                                                    (size <<= 1) *
                    817:                                                    sizeof(*nwhat));
1.23      christos  818:                                                if (nwhat == NULL) {
1.95      christos  819:                                                        el_free(what);
                    820:                                                        el_free(tmp);
1.28      christos  821:                                                        return 0;
1.23      christos  822:                                                }
                    823:                                                what = nwhat;
                    824:                                        }
1.1       christos  825:                                        what[len++] = *cmd;
                    826:                                }
                    827:                                what[len] = '\0';
                    828:                                from = what;
                    829:                                if (*what == '\0') {
1.95      christos  830:                                        el_free(what);
1.23      christos  831:                                        if (search) {
1.1       christos  832:                                                from = strdup(search);
1.62      christos  833:                                                if (from == NULL) {
1.95      christos  834:                                                        el_free(tmp);
1.28      christos  835:                                                        return 0;
1.62      christos  836:                                                }
1.23      christos  837:                                        } else {
1.1       christos  838:                                                from = NULL;
1.95      christos  839:                                                el_free(tmp);
1.96      christos  840:                                                return -1;
1.1       christos  841:                                        }
                    842:                                }
                    843:                                cmd++;  /* shift after delim */
                    844:                                if (!*cmd)
                    845:                                        continue;
                    846:
                    847:                                size = 16;
1.95      christos  848:                                with = el_realloc(to, size * sizeof(*with));
1.23      christos  849:                                if (with == NULL) {
1.95      christos  850:                                        el_free(to);
                    851:                                        el_free(tmp);
1.23      christos  852:                                        return -1;
                    853:                                }
1.1       christos  854:                                len = 0;
                    855:                                from_len = strlen(from);
                    856:                                for (; *cmd && *cmd != delim; cmd++) {
                    857:                                        if (len + from_len + 1 >= size) {
1.23      christos  858:                                                char *nwith;
1.1       christos  859:                                                size += from_len + 1;
1.95      christos  860:                                                nwith = el_realloc(with,
                    861:                                                    size * sizeof(*nwith));
1.23      christos  862:                                                if (nwith == NULL) {
1.95      christos  863:                                                        el_free(with);
                    864:                                                        el_free(tmp);
1.23      christos  865:                                                        return -1;
                    866:                                                }
                    867:                                                with = nwith;
1.1       christos  868:                                        }
                    869:                                        if (*cmd == '&') {
                    870:                                                /* safe */
1.40      christos  871:                                                (void)strcpy(&with[len], from);
1.1       christos  872:                                                len += from_len;
                    873:                                                continue;
                    874:                                        }
                    875:                                        if (*cmd == '\\'
                    876:                                            && (*(cmd + 1) == delim
                    877:                                                || *(cmd + 1) == '&'))
                    878:                                                cmd++;
                    879:                                        with[len++] = *cmd;
                    880:                                }
                    881:                                with[len] = '\0';
                    882:                                to = with;
                    883:                        }
                    884:
1.40      christos  885:                        aptr = _rl_compat_sub(tmp, from, to, g_on);
                    886:                        if (aptr) {
1.95      christos  887:                                el_free(tmp);
1.40      christos  888:                                tmp = aptr;
1.23      christos  889:                        }
1.40      christos  890:                        g_on = 0;
1.1       christos  891:                }
1.5       christos  892:        }
1.40      christos  893:        *result = tmp;
1.96      christos  894:        return p_on? 2:1;
1.1       christos  895: }
                    896:
1.11      lukem     897:
1.1       christos  898: /*
                    899:  * csh-style history expansion
                    900:  */
                    901: int
1.11      lukem     902: history_expand(char *str, char **output)
                    903: {
1.40      christos  904:        int ret = 0;
                    905:        size_t idx, i, size;
                    906:        char *tmp, *result;
1.1       christos  907:
                    908:        if (h == NULL || e == NULL)
                    909:                rl_initialize();
                    910:
1.40      christos  911:        if (history_expansion_char == 0) {
                    912:                *output = strdup(str);
1.96      christos  913:                return 0;
1.40      christos  914:        }
1.1       christos  915:
1.40      christos  916:        *output = NULL;
1.1       christos  917:        if (str[0] == history_subst_char) {
                    918:                /* ^foo^foo2^ is equivalent to !!:s^foo^foo2^ */
1.100     christos  919:                *output = el_malloc((strlen(str) + 4 + 1) * sizeof(**output));
1.40      christos  920:                if (*output == NULL)
                    921:                        return 0;
                    922:                (*output)[0] = (*output)[1] = history_expansion_char;
                    923:                (*output)[2] = ':';
                    924:                (*output)[3] = 's';
                    925:                (void)strcpy((*output) + 4, str);
                    926:                str = *output;
                    927:        } else {
                    928:                *output = strdup(str);
                    929:                if (*output == NULL)
                    930:                        return 0;
1.1       christos  931:        }
1.40      christos  932:
1.63      christos  933: #define ADD_STRING(what, len, fr)                                      \
1.1       christos  934:        {                                                               \
1.23      christos  935:                if (idx + len + 1 > size) {                             \
1.95      christos  936:                        char *nresult = el_realloc(result,              \
                    937:                            (size += len + 1) * sizeof(*nresult));      \
1.23      christos  938:                        if (nresult == NULL) {                          \
1.95      christos  939:                                el_free(*output);                       \
1.65      christos  940:                                if (/*CONSTCOND*/fr)                    \
1.95      christos  941:                                        el_free(tmp);                   \
1.28      christos  942:                                return 0;                               \
1.23      christos  943:                        }                                               \
                    944:                        result = nresult;                               \
                    945:                }                                                       \
1.1       christos  946:                (void)strncpy(&result[idx], what, len);                 \
                    947:                idx += len;                                             \
                    948:                result[idx] = '\0';                                     \
                    949:        }
                    950:
                    951:        result = NULL;
                    952:        size = idx = 0;
1.64      christos  953:        tmp = NULL;
1.1       christos  954:        for (i = 0; str[i];) {
1.40      christos  955:                int qchar, loop_again;
                    956:                size_t len, start, j;
1.1       christos  957:
1.40      christos  958:                qchar = 0;
1.1       christos  959:                loop_again = 1;
                    960:                start = j = i;
                    961: loop:
                    962:                for (; str[j]; j++) {
                    963:                        if (str[j] == '\\' &&
                    964:                            str[j + 1] == history_expansion_char) {
1.115     christos  965:                                len = strlen(&str[j + 1]) + 1;
                    966:                                memmove(&str[j], &str[j + 1], len);
1.1       christos  967:                                continue;
                    968:                        }
                    969:                        if (!loop_again) {
1.40      christos  970:                                if (isspace((unsigned char) str[j])
                    971:                                    || str[j] == qchar)
1.1       christos  972:                                        break;
                    973:                        }
                    974:                        if (str[j] == history_expansion_char
                    975:                            && !strchr(history_no_expand_chars, str[j + 1])
                    976:                            && (!history_inhibit_expansion_function ||
1.40      christos  977:                            (*history_inhibit_expansion_function)(str,
                    978:                            (int)j) == 0))
1.1       christos  979:                                break;
                    980:                }
                    981:
1.40      christos  982:                if (str[j] && loop_again) {
1.1       christos  983:                        i = j;
1.40      christos  984:                        qchar = (j > 0 && str[j - 1] == '"' )? '"':0;
1.1       christos  985:                        j++;
                    986:                        if (str[j] == history_expansion_char)
                    987:                                j++;
                    988:                        loop_again = 0;
                    989:                        goto loop;
                    990:                }
                    991:                len = i - start;
1.64      christos  992:                ADD_STRING(&str[start], len, 0);
1.1       christos  993:
1.40      christos  994:                if (str[i] == '\0' || str[i] != history_expansion_char) {
1.1       christos  995:                        len = j - i;
1.64      christos  996:                        ADD_STRING(&str[i], len, 0);
1.1       christos  997:                        if (start == 0)
1.40      christos  998:                                ret = 0;
1.1       christos  999:                        else
1.40      christos 1000:                                ret = 1;
1.1       christos 1001:                        break;
                   1002:                }
1.40      christos 1003:                ret = _history_expand_command (str, i, (j - i), &tmp);
                   1004:                if (ret > 0 && tmp) {
                   1005:                        len = strlen(tmp);
1.63      christos 1006:                        ADD_STRING(tmp, len, 1);
1.66      christos 1007:                }
                   1008:                if (tmp) {
1.95      christos 1009:                        el_free(tmp);
1.64      christos 1010:                        tmp = NULL;
1.1       christos 1011:                }
                   1012:                i = j;
1.40      christos 1013:        }
1.1       christos 1014:
1.40      christos 1015:        /* ret is 2 for "print only" option */
                   1016:        if (ret == 2) {
                   1017:                add_history(result);
1.1       christos 1018: #ifdef GDB_411_HACK
                   1019:                /* gdb 4.11 has been shipped with readline, where */
                   1020:                /* history_expand() returned -1 when the line     */
                   1021:                /* should not be executed; in readline 2.1+       */
                   1022:                /* it should return 2 in such a case              */
1.40      christos 1023:                ret = -1;
1.1       christos 1024: #endif
                   1025:        }
1.95      christos 1026:        el_free(*output);
1.1       christos 1027:        *output = result;
                   1028:
1.96      christos 1029:        return ret;
1.1       christos 1030: }
                   1031:
1.40      christos 1032: /*
                   1033: * Return a string consisting of arguments of "str" from "start" to "end".
                   1034: */
                   1035: char *
                   1036: history_arg_extract(int start, int end, const char *str)
                   1037: {
                   1038:        size_t  i, len, max;
1.84      christos 1039:        char    **arr, *result = NULL;
1.40      christos 1040:
                   1041:        arr = history_tokenize(str);
                   1042:        if (!arr)
1.84      christos 1043:                return NULL;
                   1044:        if (arr && *arr == NULL)
                   1045:                goto out;
1.40      christos 1046:
                   1047:        for (max = 0; arr[max]; max++)
                   1048:                continue;
                   1049:        max--;
                   1050:
                   1051:        if (start == '$')
1.80      christos 1052:                start = (int)max;
1.40      christos 1053:        if (end == '$')
1.80      christos 1054:                end = (int)max;
1.40      christos 1055:        if (end < 0)
1.80      christos 1056:                end = (int)max + end + 1;
1.40      christos 1057:        if (start < 0)
                   1058:                start = end;
                   1059:
1.84      christos 1060:        if (start < 0 || end < 0 || (size_t)start > max ||
                   1061:            (size_t)end > max || start > end)
                   1062:                goto out;
1.40      christos 1063:
1.99      christos 1064:        for (i = (size_t)start, len = 0; i <= (size_t)end; i++)
1.40      christos 1065:                len += strlen(arr[i]) + 1;
                   1066:        len++;
1.95      christos 1067:        result = el_malloc(len * sizeof(*result));
1.40      christos 1068:        if (result == NULL)
1.84      christos 1069:                goto out;
1.40      christos 1070:
1.99      christos 1071:        for (i = (size_t)start, len = 0; i <= (size_t)end; i++) {
1.40      christos 1072:                (void)strcpy(result + len, arr[i]);
                   1073:                len += strlen(arr[i]);
1.77      lukem    1074:                if (i < (size_t)end)
1.40      christos 1075:                        result[len++] = ' ';
                   1076:        }
1.76      christos 1077:        result[len] = '\0';
1.40      christos 1078:
1.84      christos 1079: out:
1.40      christos 1080:        for (i = 0; arr[i]; i++)
1.95      christos 1081:                el_free(arr[i]);
                   1082:        el_free(arr);
1.40      christos 1083:
1.84      christos 1084:        return result;
1.40      christos 1085: }
1.11      lukem    1086:
1.1       christos 1087: /*
1.40      christos 1088:  * Parse the string into individual tokens,
                   1089:  * similar to how shell would do it.
1.1       christos 1090:  */
                   1091: char **
1.11      lukem    1092: history_tokenize(const char *str)
1.1       christos 1093: {
1.40      christos 1094:        int size = 1, idx = 0, i, start;
1.5       christos 1095:        size_t len;
1.1       christos 1096:        char **result = NULL, *temp, delim = '\0';
                   1097:
1.40      christos 1098:        for (i = 0; str[i];) {
1.4       christos 1099:                while (isspace((unsigned char) str[i]))
1.1       christos 1100:                        i++;
                   1101:                start = i;
1.40      christos 1102:                for (; str[i];) {
1.9       jdolecek 1103:                        if (str[i] == '\\') {
1.14      jdolecek 1104:                                if (str[i+1] != '\0')
1.9       jdolecek 1105:                                        i++;
                   1106:                        } else if (str[i] == delim)
1.1       christos 1107:                                delim = '\0';
                   1108:                        else if (!delim &&
1.11      lukem    1109:                                    (isspace((unsigned char) str[i]) ||
                   1110:                                strchr("()<>;&|$", str[i])))
1.1       christos 1111:                                break;
                   1112:                        else if (!delim && strchr("'`\"", str[i]))
                   1113:                                delim = str[i];
1.40      christos 1114:                        if (str[i])
                   1115:                                i++;
1.1       christos 1116:                }
                   1117:
1.40      christos 1118:                if (idx + 2 >= size) {
1.23      christos 1119:                        char **nresult;
1.1       christos 1120:                        size <<= 1;
1.99      christos 1121:                        nresult = el_realloc(result, (size_t)size * sizeof(*nresult));
1.23      christos 1122:                        if (nresult == NULL) {
1.95      christos 1123:                                el_free(result);
1.23      christos 1124:                                return NULL;
                   1125:                        }
                   1126:                        result = nresult;
1.1       christos 1127:                }
1.99      christos 1128:                len = (size_t)i - (size_t)start;
                   1129:                temp = el_malloc((size_t)(len + 1) * sizeof(*temp));
1.23      christos 1130:                if (temp == NULL) {
1.40      christos 1131:                        for (i = 0; i < idx; i++)
1.95      christos 1132:                                el_free(result[i]);
                   1133:                        el_free(result);
1.23      christos 1134:                        return NULL;
                   1135:                }
1.40      christos 1136:                (void)strncpy(temp, &str[start], len);
1.1       christos 1137:                temp[len] = '\0';
1.40      christos 1138:                result[idx++] = temp;
                   1139:                result[idx] = NULL;
                   1140:                if (str[i])
                   1141:                        i++;
1.1       christos 1142:        }
1.96      christos 1143:        return result;
1.1       christos 1144: }
                   1145:
1.11      lukem    1146:
1.1       christos 1147: /*
                   1148:  * limit size of history record to ``max'' events
                   1149:  */
                   1150: void
1.11      lukem    1151: stifle_history(int max)
1.1       christos 1152: {
1.92      christos 1153:        HistEvent ev;
1.130     christos 1154:        HIST_ENTRY *he;
1.1       christos 1155:
                   1156:        if (h == NULL || e == NULL)
                   1157:                rl_initialize();
                   1158:
1.130     christos 1159:        if (history(h, &ev, H_SETSIZE, max) == 0) {
1.1       christos 1160:                max_input_history = max;
1.136     christos 1161:                if (history_length > max)
                   1162:                        history_base = history_length - max;
1.135     christos 1163:                while (history_length > max) {
1.134     christos 1164:                        he = remove_history(0);
1.130     christos 1165:                        el_free(he->data);
                   1166:                        el_free((void *)(unsigned long)he->line);
                   1167:                        el_free(he);
                   1168:                }
                   1169:        }
1.1       christos 1170: }
                   1171:
1.11      lukem    1172:
1.1       christos 1173: /*
                   1174:  * "unlimit" size of history - set the limit to maximum allowed int value
                   1175:  */
                   1176: int
1.11      lukem    1177: unstifle_history(void)
1.1       christos 1178: {
1.92      christos 1179:        HistEvent ev;
1.1       christos 1180:        int omax;
                   1181:
1.92      christos 1182:        history(h, &ev, H_SETSIZE, INT_MAX);
1.1       christos 1183:        omax = max_input_history;
                   1184:        max_input_history = INT_MAX;
1.96      christos 1185:        return omax;            /* some value _must_ be returned */
1.1       christos 1186: }
                   1187:
1.11      lukem    1188:
1.1       christos 1189: int
1.11      lukem    1190: history_is_stifled(void)
1.1       christos 1191: {
1.11      lukem    1192:
1.1       christos 1193:        /* cannot return true answer */
1.96      christos 1194:        return max_input_history != INT_MAX;
1.1       christos 1195: }
                   1196:
1.85      christos 1197: static const char _history_tmp_template[] = "/tmp/.historyXXXXXX";
                   1198:
                   1199: int
                   1200: history_truncate_file (const char *filename, int nlines)
                   1201: {
                   1202:        int ret = 0;
                   1203:        FILE *fp, *tp;
                   1204:        char template[sizeof(_history_tmp_template)];
                   1205:        char buf[4096];
                   1206:        int fd;
                   1207:        char *cp;
                   1208:        off_t off;
                   1209:        int count = 0;
                   1210:        ssize_t left = 0;
                   1211:
                   1212:        if (filename == NULL && (filename = _default_history_file()) == NULL)
                   1213:                return errno;
                   1214:        if ((fp = fopen(filename, "r+")) == NULL)
                   1215:                return errno;
                   1216:        strcpy(template, _history_tmp_template);
                   1217:        if ((fd = mkstemp(template)) == -1) {
                   1218:                ret = errno;
                   1219:                goto out1;
                   1220:        }
                   1221:
                   1222:        if ((tp = fdopen(fd, "r+")) == NULL) {
                   1223:                close(fd);
                   1224:                ret = errno;
                   1225:                goto out2;
                   1226:        }
                   1227:
                   1228:        for(;;) {
1.98      christos 1229:                if (fread(buf, sizeof(buf), (size_t)1, fp) != 1) {
1.85      christos 1230:                        if (ferror(fp)) {
                   1231:                                ret = errno;
                   1232:                                break;
                   1233:                        }
                   1234:                        if (fseeko(fp, (off_t)sizeof(buf) * count, SEEK_SET) ==
                   1235:                            (off_t)-1) {
                   1236:                                ret = errno;
                   1237:                                break;
                   1238:                        }
1.99      christos 1239:                        left = (ssize_t)fread(buf, (size_t)1, sizeof(buf), fp);
1.85      christos 1240:                        if (ferror(fp)) {
                   1241:                                ret = errno;
                   1242:                                break;
                   1243:                        }
                   1244:                        if (left == 0) {
                   1245:                                count--;
                   1246:                                left = sizeof(buf);
1.98      christos 1247:                        } else if (fwrite(buf, (size_t)left, (size_t)1, tp)
                   1248:                            != 1) {
1.85      christos 1249:                                ret = errno;
                   1250:                                break;
                   1251:                        }
                   1252:                        fflush(tp);
                   1253:                        break;
                   1254:                }
1.98      christos 1255:                if (fwrite(buf, sizeof(buf), (size_t)1, tp) != 1) {
1.85      christos 1256:                        ret = errno;
                   1257:                        break;
                   1258:                }
                   1259:                count++;
                   1260:        }
                   1261:        if (ret)
                   1262:                goto out3;
                   1263:        cp = buf + left - 1;
                   1264:        if(*cp != '\n')
                   1265:                cp++;
                   1266:        for(;;) {
                   1267:                while (--cp >= buf) {
                   1268:                        if (*cp == '\n') {
                   1269:                                if (--nlines == 0) {
                   1270:                                        if (++cp >= buf + sizeof(buf)) {
                   1271:                                                count++;
                   1272:                                                cp = buf;
                   1273:                                        }
                   1274:                                        break;
                   1275:                                }
                   1276:                        }
                   1277:                }
                   1278:                if (nlines <= 0 || count == 0)
                   1279:                        break;
                   1280:                count--;
                   1281:                if (fseeko(tp, (off_t)sizeof(buf) * count, SEEK_SET) < 0) {
                   1282:                        ret = errno;
                   1283:                        break;
                   1284:                }
1.98      christos 1285:                if (fread(buf, sizeof(buf), (size_t)1, tp) != 1) {
1.85      christos 1286:                        if (ferror(tp)) {
                   1287:                                ret = errno;
                   1288:                                break;
                   1289:                        }
                   1290:                        ret = EAGAIN;
                   1291:                        break;
                   1292:                }
                   1293:                cp = buf + sizeof(buf);
                   1294:        }
                   1295:
                   1296:        if (ret || nlines > 0)
                   1297:                goto out3;
                   1298:
1.98      christos 1299:        if (fseeko(fp, (off_t)0, SEEK_SET) == (off_t)-1) {
1.85      christos 1300:                ret = errno;
                   1301:                goto out3;
                   1302:        }
                   1303:
                   1304:        if (fseeko(tp, (off_t)sizeof(buf) * count + (cp - buf), SEEK_SET) ==
                   1305:            (off_t)-1) {
                   1306:                ret = errno;
                   1307:                goto out3;
                   1308:        }
                   1309:
                   1310:        for(;;) {
1.99      christos 1311:                if ((left = (ssize_t)fread(buf, (size_t)1, sizeof(buf), tp)) == 0) {
1.85      christos 1312:                        if (ferror(fp))
                   1313:                                ret = errno;
                   1314:                        break;
                   1315:                }
1.98      christos 1316:                if (fwrite(buf, (size_t)left, (size_t)1, fp) != 1) {
1.85      christos 1317:                        ret = errno;
                   1318:                        break;
                   1319:                }
                   1320:        }
                   1321:        fflush(fp);
                   1322:        if((off = ftello(fp)) > 0)
                   1323:                (void)ftruncate(fileno(fp), off);
                   1324: out3:
                   1325:        fclose(tp);
                   1326: out2:
                   1327:        unlink(template);
                   1328: out1:
                   1329:        fclose(fp);
                   1330:
                   1331:        return ret;
                   1332: }
                   1333:
1.11      lukem    1334:
1.1       christos 1335: /*
                   1336:  * read history from a file given
                   1337:  */
                   1338: int
1.11      lukem    1339: read_history(const char *filename)
1.1       christos 1340: {
1.92      christos 1341:        HistEvent ev;
1.1       christos 1342:
                   1343:        if (h == NULL || e == NULL)
                   1344:                rl_initialize();
1.85      christos 1345:        if (filename == NULL && (filename = _default_history_file()) == NULL)
                   1346:                return errno;
1.96      christos 1347:        return history(h, &ev, H_LOAD, filename) == -1 ?
                   1348:            (errno ? errno : EINVAL) : 0;
1.1       christos 1349: }
                   1350:
1.11      lukem    1351:
1.1       christos 1352: /*
                   1353:  * write history to a file given
                   1354:  */
                   1355: int
1.11      lukem    1356: write_history(const char *filename)
1.1       christos 1357: {
1.92      christos 1358:        HistEvent ev;
1.1       christos 1359:
                   1360:        if (h == NULL || e == NULL)
                   1361:                rl_initialize();
1.85      christos 1362:        if (filename == NULL && (filename = _default_history_file()) == NULL)
                   1363:                return errno;
1.96      christos 1364:        return history(h, &ev, H_SAVE, filename) == -1 ?
                   1365:            (errno ? errno : EINVAL) : 0;
1.1       christos 1366: }
                   1367:
1.11      lukem    1368:
1.1       christos 1369: /*
                   1370:  * returns history ``num''th event
                   1371:  *
                   1372:  * returned pointer points to static variable
                   1373:  */
1.2       christos 1374: HIST_ENTRY *
1.11      lukem    1375: history_get(int num)
1.1       christos 1376: {
                   1377:        static HIST_ENTRY she;
1.92      christos 1378:        HistEvent ev;
1.40      christos 1379:        int curr_num;
1.1       christos 1380:
                   1381:        if (h == NULL || e == NULL)
                   1382:                rl_initialize();
                   1383:
1.131     christos 1384:        if (num < history_base)
                   1385:                return NULL;
                   1386:
1.40      christos 1387:        /* save current position */
1.92      christos 1388:        if (history(h, &ev, H_CURR) != 0)
1.96      christos 1389:                return NULL;
1.1       christos 1390:        curr_num = ev.num;
1.40      christos 1391:
1.131     christos 1392:        /*
                   1393:         * use H_DELDATA to set to nth history (without delete) by passing
                   1394:         * (void **)-1  -- as in history_set_pos
                   1395:         */
                   1396:        if (history(h, &ev, H_DELDATA, num - history_base, (void **)-1) != 0)
                   1397:                goto out;
1.1       christos 1398:
1.131     christos 1399:        /* get current entry */
                   1400:        if (history(h, &ev, H_CURR) != 0)
                   1401:                goto out;
                   1402:        if (history(h, &ev, H_NEXT_EVDATA, ev.num, &she.data) != 0)
                   1403:                goto out;
1.92      christos 1404:        she.line = ev.str;
1.1       christos 1405:
1.40      christos 1406:        /* restore pointer to where it was */
1.92      christos 1407:        (void)history(h, &ev, H_SET, curr_num);
1.1       christos 1408:
1.96      christos 1409:        return &she;
1.131     christos 1410:
                   1411: out:
                   1412:        /* restore pointer to where it was */
                   1413:        (void)history(h, &ev, H_SET, curr_num);
                   1414:        return NULL;
1.1       christos 1415: }
                   1416:
1.11      lukem    1417:
1.1       christos 1418: /*
                   1419:  * add the line to history table
                   1420:  */
                   1421: int
1.11      lukem    1422: add_history(const char *line)
1.1       christos 1423: {
1.92      christos 1424:        HistEvent ev;
1.1       christos 1425:
                   1426:        if (h == NULL || e == NULL)
                   1427:                rl_initialize();
                   1428:
1.135     christos 1429:        if (history(h, &ev, H_ENTER, line) == -1)
                   1430:                return 0;
                   1431:
                   1432:        (void)history(h, &ev, H_GETSIZE);
                   1433:        if (ev.num == history_length)
                   1434:                history_base++;
                   1435:        else
1.1       christos 1436:                history_length = ev.num;
1.135     christos 1437:        return 0;
1.1       christos 1438: }
                   1439:
1.11      lukem    1440:
1.1       christos 1441: /*
1.58      christos 1442:  * remove the specified entry from the history list and return it.
                   1443:  */
                   1444: HIST_ENTRY *
                   1445: remove_history(int num)
                   1446: {
1.85      christos 1447:        HIST_ENTRY *he;
1.92      christos 1448:        HistEvent ev;
1.58      christos 1449:
                   1450:        if (h == NULL || e == NULL)
                   1451:                rl_initialize();
                   1452:
1.95      christos 1453:        if ((he = el_malloc(sizeof(*he))) == NULL)
1.58      christos 1454:                return NULL;
                   1455:
1.92      christos 1456:        if (history(h, &ev, H_DELDATA, num, &he->data) != 0) {
1.95      christos 1457:                el_free(he);
1.71      christos 1458:                return NULL;
1.85      christos 1459:        }
1.71      christos 1460:
1.92      christos 1461:        he->line = ev.str;
                   1462:        if (history(h, &ev, H_GETSIZE) == 0)
1.85      christos 1463:                history_length = ev.num;
1.58      christos 1464:
1.85      christos 1465:        return he;
1.58      christos 1466: }
                   1467:
                   1468:
                   1469: /*
1.85      christos 1470:  * replace the line and data of the num-th entry
                   1471:  */
                   1472: HIST_ENTRY *
                   1473: replace_history_entry(int num, const char *line, histdata_t data)
                   1474: {
                   1475:        HIST_ENTRY *he;
1.92      christos 1476:        HistEvent ev;
1.85      christos 1477:        int curr_num;
                   1478:
                   1479:        if (h == NULL || e == NULL)
                   1480:                rl_initialize();
                   1481:
                   1482:        /* save current position */
1.92      christos 1483:        if (history(h, &ev, H_CURR) != 0)
1.85      christos 1484:                return NULL;
                   1485:        curr_num = ev.num;
                   1486:
                   1487:        /* start from the oldest */
1.92      christos 1488:        if (history(h, &ev, H_LAST) != 0)
1.85      christos 1489:                return NULL;    /* error */
                   1490:
1.95      christos 1491:        if ((he = el_malloc(sizeof(*he))) == NULL)
1.85      christos 1492:                return NULL;
                   1493:
                   1494:        /* look forwards for event matching specified offset */
1.92      christos 1495:        if (history(h, &ev, H_NEXT_EVDATA, num, &he->data))
1.85      christos 1496:                goto out;
                   1497:
1.92      christos 1498:        he->line = strdup(ev.str);
1.85      christos 1499:        if (he->line == NULL)
                   1500:                goto out;
                   1501:
1.92      christos 1502:        if (history(h, &ev, H_REPLACE, line, data))
1.85      christos 1503:                goto out;
                   1504:
                   1505:        /* restore pointer to where it was */
1.92      christos 1506:        if (history(h, &ev, H_SET, curr_num))
1.85      christos 1507:                goto out;
                   1508:
                   1509:        return he;
                   1510: out:
1.95      christos 1511:        el_free(he);
1.85      christos 1512:        return NULL;
                   1513: }
                   1514:
                   1515: /*
1.1       christos 1516:  * clear the history list - delete all entries
                   1517:  */
                   1518: void
1.11      lukem    1519: clear_history(void)
1.1       christos 1520: {
1.92      christos 1521:        HistEvent ev;
1.11      lukem    1522:
1.110     christos 1523:        if (h == NULL || e == NULL)
                   1524:                rl_initialize();
                   1525:
1.92      christos 1526:        (void)history(h, &ev, H_CLEAR);
1.137     christos 1527:        history_offset = history_length = 0;
1.1       christos 1528: }
                   1529:
1.11      lukem    1530:
1.1       christos 1531: /*
                   1532:  * returns offset of the current history event
                   1533:  */
                   1534: int
1.11      lukem    1535: where_history(void)
1.1       christos 1536: {
1.137     christos 1537:        return history_offset;
                   1538: }
                   1539:
                   1540: static HIST_ENTRY **_history_listp;
                   1541: static HIST_ENTRY *_history_list;
                   1542:
                   1543: HIST_ENTRY **
                   1544: history_list(void)
                   1545: {
1.92      christos 1546:        HistEvent ev;
1.137     christos 1547:        HIST_ENTRY **nlp, *nl;
                   1548:        int i;
1.1       christos 1549:
1.137     christos 1550:        if (history(h, &ev, H_LAST) != 0)
                   1551:                return NULL;
1.1       christos 1552:
1.137     christos 1553:        if ((nlp = el_realloc(_history_listp,
                   1554:            (size_t)history_length * sizeof(*nlp))) == NULL)
                   1555:                return NULL;
                   1556:        _history_listp = nlp;
1.133     christos 1557:
1.137     christos 1558:        if ((nl = el_realloc(_history_list,
                   1559:            (size_t)history_length * sizeof(*nl))) == NULL)
                   1560:                return NULL;
                   1561:        _history_list = nl;
                   1562:
                   1563:        i = 0;
                   1564:        do {
                   1565:                _history_listp[i] = &_history_list[i];
                   1566:                _history_list[i].line = ev.str;
                   1567:                _history_list[i].data = NULL;
                   1568:                if (i++ == history_length)
                   1569:                        abort();
                   1570:        } while (history(h, &ev, H_PREV) == 0);
                   1571:        return _history_listp;
1.1       christos 1572: }
                   1573:
                   1574: /*
                   1575:  * returns current history event or NULL if there is no such event
                   1576:  */
1.2       christos 1577: HIST_ENTRY *
1.11      lukem    1578: current_history(void)
1.1       christos 1579: {
1.137     christos 1580:        HistEvent ev;
                   1581:
                   1582:        if (history(h, &ev, H_PREV_EVENT, history_offset + 1) != 0)
                   1583:                return NULL;
1.11      lukem    1584:
1.137     christos 1585:        rl_he.line = ev.str;
                   1586:        rl_he.data = NULL;
                   1587:        return &rl_he;
1.1       christos 1588: }
                   1589:
1.11      lukem    1590:
1.1       christos 1591: /*
                   1592:  * returns total number of bytes history events' data are using
                   1593:  */
                   1594: int
1.11      lukem    1595: history_total_bytes(void)
1.1       christos 1596: {
1.92      christos 1597:        HistEvent ev;
1.80      christos 1598:        int curr_num;
                   1599:        size_t size;
1.1       christos 1600:
1.92      christos 1601:        if (history(h, &ev, H_CURR) != 0)
1.96      christos 1602:                return -1;
1.1       christos 1603:        curr_num = ev.num;
                   1604:
1.92      christos 1605:        (void)history(h, &ev, H_FIRST);
1.1       christos 1606:        size = 0;
                   1607:        do
1.92      christos 1608:                size += strlen(ev.str) * sizeof(*ev.str);
                   1609:        while (history(h, &ev, H_NEXT) == 0);
1.1       christos 1610:
                   1611:        /* get to the same position as before */
1.92      christos 1612:        history(h, &ev, H_PREV_EVENT, curr_num);
1.1       christos 1613:
1.96      christos 1614:        return (int)size;
1.1       christos 1615: }
                   1616:
1.11      lukem    1617:
1.1       christos 1618: /*
                   1619:  * sets the position in the history list to ``pos''
                   1620:  */
                   1621: int
1.11      lukem    1622: history_set_pos(int pos)
1.1       christos 1623: {
1.85      christos 1624:        if (pos >= history_length || pos < 0)
1.129     christos 1625:                return 0;
1.1       christos 1626:
1.137     christos 1627:        history_offset = pos;
1.129     christos 1628:        return 1;
1.1       christos 1629: }
                   1630:
1.11      lukem    1631:
1.1       christos 1632: /*
                   1633:  * returns previous event in history and shifts pointer accordingly
1.132     christos 1634:  * Note that readline and editline define directions in opposite ways.
1.1       christos 1635:  */
1.2       christos 1636: HIST_ENTRY *
1.11      lukem    1637: previous_history(void)
1.1       christos 1638: {
1.137     christos 1639:        HistEvent ev;
                   1640:
                   1641:        if (history_offset == 0)
                   1642:                return NULL;
1.11      lukem    1643:
1.137     christos 1644:        if (history(h, &ev, H_LAST) != 0)
                   1645:                return NULL;
                   1646:
                   1647:        history_offset--;
                   1648:        return current_history();
1.1       christos 1649: }
                   1650:
1.11      lukem    1651:
1.1       christos 1652: /*
                   1653:  * returns next event in history and shifts pointer accordingly
                   1654:  */
1.2       christos 1655: HIST_ENTRY *
1.11      lukem    1656: next_history(void)
1.1       christos 1657: {
1.137     christos 1658:        HistEvent ev;
                   1659:
                   1660:        if (history_offset >= history_length)
                   1661:                return NULL;
                   1662:
                   1663:        if (history(h, &ev, H_LAST) != 0)
                   1664:                return NULL;
1.11      lukem    1665:
1.137     christos 1666:        history_offset++;
                   1667:        return current_history();
1.1       christos 1668: }
                   1669:
1.11      lukem    1670:
1.1       christos 1671: /*
1.40      christos 1672:  * searches for first history event containing the str
1.1       christos 1673:  */
1.40      christos 1674: int
                   1675: history_search(const char *str, int direction)
1.11      lukem    1676: {
1.92      christos 1677:        HistEvent ev;
                   1678:        const char *strp;
1.11      lukem    1679:        int curr_num;
1.1       christos 1680:
1.92      christos 1681:        if (history(h, &ev, H_CURR) != 0)
1.96      christos 1682:                return -1;
1.1       christos 1683:        curr_num = ev.num;
                   1684:
                   1685:        for (;;) {
1.92      christos 1686:                if ((strp = strstr(ev.str, str)) != NULL)
1.96      christos 1687:                        return (int)(strp - ev.str);
1.92      christos 1688:                if (history(h, &ev, direction < 0 ? H_NEXT:H_PREV) != 0)
1.1       christos 1689:                        break;
                   1690:        }
1.92      christos 1691:        (void)history(h, &ev, H_SET, curr_num);
1.96      christos 1692:        return -1;
1.1       christos 1693: }
                   1694:
1.11      lukem    1695:
1.1       christos 1696: /*
                   1697:  * searches for first history event beginning with str
                   1698:  */
                   1699: int
1.11      lukem    1700: history_search_prefix(const char *str, int direction)
1.1       christos 1701: {
1.92      christos 1702:        HistEvent ev;
1.11      lukem    1703:
1.92      christos 1704:        return (history(h, &ev, direction < 0 ?
1.88      christos 1705:            H_PREV_STR : H_NEXT_STR, str));
1.1       christos 1706: }
                   1707:
1.11      lukem    1708:
1.1       christos 1709: /*
                   1710:  * search for event in history containing str, starting at offset
                   1711:  * abs(pos); continue backward, if pos<0, forward otherwise
                   1712:  */
1.5       christos 1713: /* ARGSUSED */
1.1       christos 1714: int
1.40      christos 1715: history_search_pos(const char *str,
1.30      christos 1716:                   int direction __attribute__((__unused__)), int pos)
1.1       christos 1717: {
1.92      christos 1718:        HistEvent ev;
1.11      lukem    1719:        int curr_num, off;
1.1       christos 1720:
                   1721:        off = (pos > 0) ? pos : -pos;
                   1722:        pos = (pos > 0) ? 1 : -1;
                   1723:
1.92      christos 1724:        if (history(h, &ev, H_CURR) != 0)
1.96      christos 1725:                return -1;
1.1       christos 1726:        curr_num = ev.num;
                   1727:
1.129     christos 1728:        if (!history_set_pos(off) || history(h, &ev, H_CURR) != 0)
1.96      christos 1729:                return -1;
1.1       christos 1730:
                   1731:        for (;;) {
1.92      christos 1732:                if (strstr(ev.str, str))
1.96      christos 1733:                        return off;
1.92      christos 1734:                if (history(h, &ev, (pos < 0) ? H_PREV : H_NEXT) != 0)
1.1       christos 1735:                        break;
                   1736:        }
                   1737:
                   1738:        /* set "current" pointer back to previous state */
1.92      christos 1739:        (void)history(h, &ev,
1.88      christos 1740:            pos < 0 ? H_NEXT_EVENT : H_PREV_EVENT, curr_num);
1.1       christos 1741:
1.96      christos 1742:        return -1;
1.1       christos 1743: }
                   1744:
                   1745:
                   1746: /********************************/
1.40      christos 1747: /* completion functions */
1.1       christos 1748:
1.57      christos 1749: char *
                   1750: tilde_expand(char *name)
                   1751: {
                   1752:        return fn_tilde_expand(name);
                   1753: }
                   1754:
                   1755: char *
                   1756: filename_completion_function(const char *name, int state)
                   1757: {
                   1758:        return fn_filename_completion_function(name, state);
                   1759: }
                   1760:
1.1       christos 1761: /*
                   1762:  * a completion generator for usernames; returns _first_ username
                   1763:  * which starts with supplied text
                   1764:  * text contains a partial username preceded by random character
1.94      christos 1765:  * (usually '~'); state resets search from start (??? should we do that anyway)
1.113     snj      1766:  * it's the caller's responsibility to free the returned value
1.1       christos 1767:  */
1.11      lukem    1768: char *
                   1769: username_completion_function(const char *text, int state)
1.1       christos 1770: {
1.94      christos 1771: #if defined(HAVE_GETPW_R_POSIX) || defined(HAVE_GETPW_R_DRAFT)
                   1772:        struct passwd pwres;
1.50      christos 1773:        char pwbuf[1024];
1.94      christos 1774: #endif
                   1775:        struct passwd *pass = NULL;
1.1       christos 1776:
                   1777:        if (text[0] == '\0')
1.96      christos 1778:                return NULL;
1.1       christos 1779:
                   1780:        if (*text == '~')
                   1781:                text++;
                   1782:
                   1783:        if (state == 0)
                   1784:                setpwent();
                   1785:
1.94      christos 1786:        while (
                   1787: #if defined(HAVE_GETPW_R_POSIX) || defined(HAVE_GETPW_R_DRAFT)
                   1788:            getpwent_r(&pwres, pwbuf, sizeof(pwbuf), &pass) == 0 && pass != NULL
                   1789: #else
                   1790:            (pass = getpwent()) != NULL
                   1791: #endif
                   1792:            && text[0] == pass->pw_name[0]
                   1793:            && strcmp(text, pass->pw_name) == 0)
                   1794:                continue;
1.1       christos 1795:
1.94      christos 1796:        if (pass == NULL) {
1.1       christos 1797:                endpwent();
1.85      christos 1798:                return NULL;
1.1       christos 1799:        }
1.94      christos 1800:        return strdup(pass->pw_name);
1.1       christos 1801: }
                   1802:
1.11      lukem    1803:
1.1       christos 1804: /*
1.46      christos 1805:  * el-compatible wrapper to send TSTP on ^Z
                   1806:  */
                   1807: /* ARGSUSED */
                   1808: static unsigned char
                   1809: _el_rl_tstp(EditLine *el __attribute__((__unused__)), int ch __attribute__((__unused__)))
                   1810: {
                   1811:        (void)kill(0, SIGTSTP);
                   1812:        return CC_NORM;
                   1813: }
1.11      lukem    1814:
1.1       christos 1815: /*
1.12      jdolecek 1816:  * Display list of strings in columnar format on readline's output stream.
                   1817:  * 'matches' is list of strings, 'len' is number of strings in 'matches',
                   1818:  * 'max' is maximum length of string in 'matches'.
                   1819:  */
                   1820: void
1.53      dsl      1821: rl_display_match_list(char **matches, int len, int max)
1.12      jdolecek 1822: {
                   1823:
1.81      christos 1824:        fn_display_match_list(e, matches, (size_t)len, (size_t)max);
1.1       christos 1825: }
                   1826:
1.56      christos 1827: static const char *
                   1828: /*ARGSUSED*/
                   1829: _rl_completion_append_character_function(const char *dummy
                   1830:     __attribute__((__unused__)))
                   1831: {
                   1832:        static char buf[2];
1.99      christos 1833:        buf[0] = (char)rl_completion_append_character;
1.76      christos 1834:        buf[1] = '\0';
1.56      christos 1835:        return buf;
                   1836: }
                   1837:
1.11      lukem    1838:
1.1       christos 1839: /*
                   1840:  * complete word at current point
                   1841:  */
1.53      dsl      1842: /* ARGSUSED */
1.1       christos 1843: int
1.53      dsl      1844: rl_complete(int ignore __attribute__((__unused__)), int invoking_key)
1.1       christos 1845: {
1.86      christos 1846:        static ct_buffer_t wbreak_conv, sprefix_conv;
1.102     christos 1847:        char *breakchars;
1.86      christos 1848:
1.1       christos 1849:        if (h == NULL || e == NULL)
                   1850:                rl_initialize();
                   1851:
                   1852:        if (rl_inhibit_completion) {
1.47      christos 1853:                char arr[2];
                   1854:                arr[0] = (char)invoking_key;
                   1855:                arr[1] = '\0';
                   1856:                el_insertstr(e, arr);
1.96      christos 1857:                return CC_REFRESH;
1.53      dsl      1858:        }
                   1859:
1.102     christos 1860:        if (rl_completion_word_break_hook != NULL)
                   1861:                breakchars = (*rl_completion_word_break_hook)();
                   1862:        else
                   1863:                breakchars = rl_basic_word_break_characters;
                   1864:
1.116     christos 1865:        _rl_update_pos();
                   1866:
1.53      dsl      1867:        /* Just look at how many global variables modify this operation! */
                   1868:        return fn_complete(e,
1.117     christos 1869:            (rl_compentry_func_t *)rl_completion_entry_function,
1.53      dsl      1870:            rl_attempted_completion_function,
1.86      christos 1871:            ct_decode_string(rl_basic_word_break_characters, &wbreak_conv),
1.102     christos 1872:            ct_decode_string(breakchars, &sprefix_conv),
1.81      christos 1873:            _rl_completion_append_character_function,
                   1874:            (size_t)rl_completion_query_items,
1.53      dsl      1875:            &rl_completion_type, &rl_attempted_completion_over,
                   1876:            &rl_point, &rl_end);
1.92      christos 1877:
                   1878:
1.1       christos 1879: }
                   1880:
1.11      lukem    1881:
1.53      dsl      1882: /* ARGSUSED */
                   1883: static unsigned char
                   1884: _el_rl_complete(EditLine *el __attribute__((__unused__)), int ch)
                   1885: {
                   1886:        return (unsigned char)rl_complete(0, ch);
                   1887: }
                   1888:
1.1       christos 1889: /*
1.7       simonb   1890:  * misc other functions
1.1       christos 1891:  */
                   1892:
                   1893: /*
                   1894:  * bind key c to readline-type function func
                   1895:  */
                   1896: int
1.85      christos 1897: rl_bind_key(int c, rl_command_func_t *func)
1.1       christos 1898: {
1.11      lukem    1899:        int retval = -1;
1.1       christos 1900:
                   1901:        if (h == NULL || e == NULL)
                   1902:                rl_initialize();
                   1903:
                   1904:        if (func == rl_insert) {
                   1905:                /* XXX notice there is no range checking of ``c'' */
                   1906:                e->el_map.key[c] = ED_INSERT;
                   1907:                retval = 0;
                   1908:        }
1.96      christos 1909:        return retval;
1.1       christos 1910: }
                   1911:
1.11      lukem    1912:
1.1       christos 1913: /*
                   1914:  * read one key from input - handles chars pushed back
                   1915:  * to input stream also
                   1916:  */
                   1917: int
1.11      lukem    1918: rl_read_key(void)
1.1       christos 1919: {
1.11      lukem    1920:        char fooarr[2 * sizeof(int)];
1.1       christos 1921:
                   1922:        if (e == NULL || h == NULL)
                   1923:                rl_initialize();
                   1924:
1.96      christos 1925:        return el_getc(e, fooarr);
1.1       christos 1926: }
                   1927:
1.11      lukem    1928:
1.1       christos 1929: /*
                   1930:  * reset the terminal
                   1931:  */
1.5       christos 1932: /* ARGSUSED */
1.1       christos 1933: void
1.30      christos 1934: rl_reset_terminal(const char *p __attribute__((__unused__)))
1.1       christos 1935: {
1.11      lukem    1936:
1.1       christos 1937:        if (h == NULL || e == NULL)
                   1938:                rl_initialize();
                   1939:        el_reset(e);
                   1940: }
                   1941:
1.11      lukem    1942:
1.1       christos 1943: /*
                   1944:  * insert character ``c'' back into input stream, ``count'' times
                   1945:  */
                   1946: int
1.11      lukem    1947: rl_insert(int count, int c)
1.1       christos 1948: {
1.11      lukem    1949:        char arr[2];
1.1       christos 1950:
                   1951:        if (h == NULL || e == NULL)
                   1952:                rl_initialize();
                   1953:
                   1954:        /* XXX - int -> char conversion can lose on multichars */
1.99      christos 1955:        arr[0] = (char)c;
1.1       christos 1956:        arr[1] = '\0';
                   1957:
                   1958:        for (; count > 0; count--)
                   1959:                el_push(e, arr);
                   1960:
1.96      christos 1961:        return 0;
1.35      christos 1962: }
                   1963:
1.85      christos 1964: int
                   1965: rl_insert_text(const char *text)
                   1966: {
                   1967:        if (!text || *text == 0)
1.96      christos 1968:                return 0;
1.85      christos 1969:
                   1970:        if (h == NULL || e == NULL)
                   1971:                rl_initialize();
                   1972:
                   1973:        if (el_insertstr(e, text) < 0)
1.96      christos 1974:                return 0;
1.85      christos 1975:        return (int)strlen(text);
                   1976: }
                   1977:
1.35      christos 1978: /*ARGSUSED*/
                   1979: int
1.97      christos 1980: rl_newline(int count __attribute__((__unused__)),
                   1981:     int c __attribute__((__unused__)))
1.35      christos 1982: {
                   1983:        /*
                   1984:         * Readline-4.0 appears to ignore the args.
                   1985:         */
                   1986:        return rl_insert(1, '\n');
                   1987: }
                   1988:
                   1989: /*ARGSUSED*/
                   1990: static unsigned char
1.97      christos 1991: rl_bind_wrapper(EditLine *el __attribute__((__unused__)), unsigned char c)
1.35      christos 1992: {
                   1993:        if (map[c] == NULL)
                   1994:            return CC_ERROR;
1.49      christos 1995:
                   1996:        _rl_update_pos();
                   1997:
1.116     christos 1998:        (*map[c])(1, c);
1.38      christos 1999:
                   2000:        /* If rl_done was set by the above call, deal with it here */
                   2001:        if (rl_done)
                   2002:                return CC_EOF;
                   2003:
1.35      christos 2004:        return CC_NORM;
                   2005: }
                   2006:
                   2007: int
1.116     christos 2008: rl_add_defun(const char *name, rl_command_func_t *fun, int c)
1.35      christos 2009: {
                   2010:        char dest[8];
1.77      lukem    2011:        if ((size_t)c >= sizeof(map) / sizeof(map[0]) || c < 0)
1.35      christos 2012:                return -1;
                   2013:        map[(unsigned char)c] = fun;
                   2014:        el_set(e, EL_ADDFN, name, name, rl_bind_wrapper);
1.37      christos 2015:        vis(dest, c, VIS_WHITE|VIS_NOSLASH, 0);
1.106     christos 2016:        el_set(e, EL_BIND, dest, name, NULL);
1.35      christos 2017:        return 0;
                   2018: }
                   2019:
                   2020: void
1.101     matt     2021: rl_callback_read_char(void)
1.35      christos 2022: {
1.36      christos 2023:        int count = 0, done = 0;
1.35      christos 2024:        const char *buf = el_gets(e, &count);
                   2025:        char *wbuf;
                   2026:
                   2027:        if (buf == NULL || count-- <= 0)
                   2028:                return;
1.61      christos 2029:        if (count == 0 && buf[0] == e->el_tty.t_c[TS_IO][C_EOF])
1.36      christos 2030:                done = 1;
                   2031:        if (buf[count] == '\n' || buf[count] == '\r')
                   2032:                done = 2;
                   2033:
                   2034:        if (done && rl_linefunc != NULL) {
1.35      christos 2035:                el_set(e, EL_UNBUFFERED, 0);
1.36      christos 2036:                if (done == 2) {
                   2037:                    if ((wbuf = strdup(buf)) != NULL)
                   2038:                        wbuf[count] = '\0';
                   2039:                } else
                   2040:                        wbuf = NULL;
1.35      christos 2041:                (*(void (*)(const char *))rl_linefunc)(wbuf);
1.111     christos 2042:                el_set(e, EL_UNBUFFERED, 1);
1.35      christos 2043:        }
                   2044: }
                   2045:
1.125     christos 2046: void
1.117     christos 2047: rl_callback_handler_install(const char *prompt, rl_vcpfunc_t *linefunc)
1.35      christos 2048: {
                   2049:        if (e == NULL) {
                   2050:                rl_initialize();
                   2051:        }
1.78      christos 2052:        (void)rl_set_prompt(prompt);
1.35      christos 2053:        rl_linefunc = linefunc;
                   2054:        el_set(e, EL_UNBUFFERED, 1);
1.125     christos 2055: }
1.35      christos 2056:
1.125     christos 2057: void
1.35      christos 2058: rl_callback_handler_remove(void)
                   2059: {
                   2060:        el_set(e, EL_UNBUFFERED, 0);
1.72      christos 2061:        rl_linefunc = NULL;
1.35      christos 2062: }
                   2063:
                   2064: void
                   2065: rl_redisplay(void)
                   2066: {
                   2067:        char a[2];
1.99      christos 2068:        a[0] = (char)e->el_tty.t_c[TS_IO][C_REPRINT];
1.35      christos 2069:        a[1] = '\0';
                   2070:        el_push(e, a);
                   2071: }
                   2072:
                   2073: int
                   2074: rl_get_previous_history(int count, int key)
                   2075: {
                   2076:        char a[2];
1.99      christos 2077:        a[0] = (char)key;
1.35      christos 2078:        a[1] = '\0';
                   2079:        while (count--)
                   2080:                el_push(e, a);
                   2081:        return 0;
1.38      christos 2082: }
                   2083:
                   2084: void
                   2085: /*ARGSUSED*/
1.97      christos 2086: rl_prep_terminal(int meta_flag __attribute__((__unused__)))
1.38      christos 2087: {
                   2088:        el_set(e, EL_PREP_TERM, 1);
                   2089: }
                   2090:
                   2091: void
1.68      christos 2092: rl_deprep_terminal(void)
1.38      christos 2093: {
                   2094:        el_set(e, EL_PREP_TERM, 0);
                   2095: }
                   2096:
                   2097: int
                   2098: rl_read_init_file(const char *s)
                   2099: {
1.96      christos 2100:        return el_source(e, s);
1.38      christos 2101: }
                   2102:
                   2103: int
                   2104: rl_parse_and_bind(const char *line)
                   2105: {
                   2106:        const char **argv;
                   2107:        int argc;
                   2108:        Tokenizer *tok;
                   2109:
                   2110:        tok = tok_init(NULL);
1.44      lukem    2111:        tok_str(tok, line, &argc, &argv);
1.38      christos 2112:        argc = el_parse(e, argc, argv);
                   2113:        tok_end(tok);
1.96      christos 2114:        return argc ? 1 : 0;
1.38      christos 2115: }
                   2116:
1.51      christos 2117: int
                   2118: rl_variable_bind(const char *var, const char *value)
                   2119: {
                   2120:        /*
                   2121:         * The proper return value is undocument, but this is what the
                   2122:         * readline source seems to do.
                   2123:         */
1.106     christos 2124:        return el_set(e, EL_BIND, "", var, value, NULL) == -1 ? 1 : 0;
1.51      christos 2125: }
                   2126:
1.38      christos 2127: void
                   2128: rl_stuff_char(int c)
                   2129: {
                   2130:        char buf[2];
                   2131:
1.99      christos 2132:        buf[0] = (char)c;
1.38      christos 2133:        buf[1] = '\0';
                   2134:        el_insertstr(e, buf);
                   2135: }
                   2136:
                   2137: static int
1.126     christos 2138: _rl_event_read_char(EditLine *el, wchar_t *wc)
1.38      christos 2139: {
1.126     christos 2140:        char    ch;
1.80      christos 2141:        int     n;
                   2142:        ssize_t num_read = 0;
1.38      christos 2143:
1.126     christos 2144:        ch = '\0';
                   2145:        *wc = L'\0';
1.38      christos 2146:        while (rl_event_hook) {
                   2147:
                   2148:                (*rl_event_hook)();
                   2149:
                   2150: #if defined(FIONREAD)
                   2151:                if (ioctl(el->el_infd, FIONREAD, &n) < 0)
1.96      christos 2152:                        return -1;
1.38      christos 2153:                if (n)
1.126     christos 2154:                        num_read = read(el->el_infd, &ch, (size_t)1);
1.38      christos 2155:                else
                   2156:                        num_read = 0;
                   2157: #elif defined(F_SETFL) && defined(O_NDELAY)
                   2158:                if ((n = fcntl(el->el_infd, F_GETFL, 0)) < 0)
1.96      christos 2159:                        return -1;
1.38      christos 2160:                if (fcntl(el->el_infd, F_SETFL, n|O_NDELAY) < 0)
1.96      christos 2161:                        return -1;
1.126     christos 2162:                num_read = read(el->el_infd, &ch, 1);
1.38      christos 2163:                if (fcntl(el->el_infd, F_SETFL, n))
1.96      christos 2164:                        return -1;
1.38      christos 2165: #else
                   2166:                /* not non-blocking, but what you gonna do? */
1.126     christos 2167:                num_read = read(el->el_infd, &ch, 1);
1.96      christos 2168:                return -1;
1.38      christos 2169: #endif
                   2170:
                   2171:                if (num_read < 0 && errno == EAGAIN)
                   2172:                        continue;
                   2173:                if (num_read == 0)
                   2174:                        continue;
                   2175:                break;
                   2176:        }
                   2177:        if (!rl_event_hook)
                   2178:                el_set(el, EL_GETCFN, EL_BUILTIN_GETCFN);
1.126     christos 2179:        *wc = (wchar_t)ch;
1.80      christos 2180:        return (int)num_read;
1.1       christos 2181: }
1.49      christos 2182:
                   2183: static void
                   2184: _rl_update_pos(void)
                   2185: {
                   2186:        const LineInfo *li = el_line(e);
                   2187:
1.80      christos 2188:        rl_point = (int)(li->cursor - li->buffer);
                   2189:        rl_end = (int)(li->lastchar - li->buffer);
1.49      christos 2190: }
1.70      christos 2191:
                   2192: void
                   2193: rl_get_screen_size(int *rows, int *cols)
                   2194: {
                   2195:        if (rows)
1.107     christos 2196:                el_get(e, EL_GETTC, "li", rows, (void *)0);
1.70      christos 2197:        if (cols)
1.107     christos 2198:                el_get(e, EL_GETTC, "co", cols, (void *)0);
1.70      christos 2199: }
                   2200:
                   2201: void
                   2202: rl_set_screen_size(int rows, int cols)
                   2203: {
                   2204:        char buf[64];
                   2205:        (void)snprintf(buf, sizeof(buf), "%d", rows);
1.106     christos 2206:        el_set(e, EL_SETTC, "li", buf, NULL);
1.70      christos 2207:        (void)snprintf(buf, sizeof(buf), "%d", cols);
1.106     christos 2208:        el_set(e, EL_SETTC, "co", buf, NULL);
1.70      christos 2209: }
                   2210:
1.71      christos 2211: char **
                   2212: rl_completion_matches(const char *str, rl_compentry_func_t *fun)
                   2213: {
                   2214:        size_t len, max, i, j, min;
                   2215:        char **list, *match, *a, *b;
                   2216:
                   2217:        len = 1;
                   2218:        max = 10;
1.95      christos 2219:        if ((list = el_malloc(max * sizeof(*list))) == NULL)
1.71      christos 2220:                return NULL;
                   2221:
                   2222:        while ((match = (*fun)(str, (int)(len - 1))) != NULL) {
1.83      christos 2223:                list[len++] = match;
1.71      christos 2224:                if (len == max) {
                   2225:                        char **nl;
                   2226:                        max += 10;
1.95      christos 2227:                        if ((nl = el_realloc(list, max * sizeof(*nl))) == NULL)
1.71      christos 2228:                                goto out;
                   2229:                        list = nl;
                   2230:                }
                   2231:        }
                   2232:        if (len == 1)
                   2233:                goto out;
                   2234:        list[len] = NULL;
                   2235:        if (len == 2) {
                   2236:                if ((list[0] = strdup(list[1])) == NULL)
                   2237:                        goto out;
                   2238:                return list;
                   2239:        }
                   2240:        qsort(&list[1], len - 1, sizeof(*list),
                   2241:            (int (*)(const void *, const void *)) strcmp);
1.119     christos 2242:        min = SIZE_MAX;
1.71      christos 2243:        for (i = 1, a = list[i]; i < len - 1; i++, a = b) {
                   2244:                b = list[i + 1];
                   2245:                for (j = 0; a[j] && a[j] == b[j]; j++)
                   2246:                        continue;
                   2247:                if (min > j)
                   2248:                        min = j;
                   2249:        }
                   2250:        if (min == 0 && *str) {
                   2251:                if ((list[0] = strdup(str)) == NULL)
                   2252:                        goto out;
                   2253:        } else {
1.95      christos 2254:                if ((list[0] = el_malloc((min + 1) * sizeof(*list[0]))) == NULL)
1.71      christos 2255:                        goto out;
                   2256:                (void)memcpy(list[0], list[1], min);
                   2257:                list[0][min] = '\0';
                   2258:        }
                   2259:        return list;
1.125     christos 2260:
1.71      christos 2261: out:
1.95      christos 2262:        el_free(list);
1.71      christos 2263:        return NULL;
                   2264: }
                   2265:
1.70      christos 2266: char *
                   2267: rl_filename_completion_function (const char *text, int state)
                   2268: {
                   2269:        return fn_filename_completion_function(text, state);
                   2270: }
                   2271:
1.73      christos 2272: void
                   2273: rl_forced_update_display(void)
                   2274: {
1.74      christos 2275:        el_set(e, EL_REFRESH);
1.73      christos 2276: }
                   2277:
1.70      christos 2278: int
                   2279: _rl_abort_internal(void)
                   2280: {
                   2281:        el_beep(e);
                   2282:        longjmp(topbuf, 1);
                   2283:        /*NOTREACHED*/
                   2284: }
                   2285:
                   2286: int
                   2287: _rl_qsort_string_compare(char **s1, char **s2)
                   2288: {
                   2289:        return strcoll(*s1, *s2);
                   2290: }
                   2291:
1.85      christos 2292: HISTORY_STATE *
                   2293: history_get_history_state(void)
                   2294: {
                   2295:        HISTORY_STATE *hs;
                   2296:
1.95      christos 2297:        if ((hs = el_malloc(sizeof(*hs))) == NULL)
1.96      christos 2298:                return NULL;
1.85      christos 2299:        hs->length = history_length;
1.96      christos 2300:        return hs;
1.85      christos 2301: }
                   2302:
1.70      christos 2303: int
                   2304: /*ARGSUSED*/
1.97      christos 2305: rl_kill_text(int from __attribute__((__unused__)),
                   2306:     int to __attribute__((__unused__)))
1.70      christos 2307: {
                   2308:        return 0;
                   2309: }
                   2310:
                   2311: Keymap
                   2312: rl_make_bare_keymap(void)
                   2313: {
                   2314:        return NULL;
                   2315: }
                   2316:
                   2317: Keymap
                   2318: rl_get_keymap(void)
                   2319: {
                   2320:        return NULL;
                   2321: }
                   2322:
                   2323: void
                   2324: /*ARGSUSED*/
1.97      christos 2325: rl_set_keymap(Keymap k __attribute__((__unused__)))
1.70      christos 2326: {
                   2327: }
                   2328:
                   2329: int
                   2330: /*ARGSUSED*/
1.97      christos 2331: rl_generic_bind(int type __attribute__((__unused__)),
                   2332:     const char * keyseq __attribute__((__unused__)),
                   2333:     const char * data __attribute__((__unused__)),
                   2334:     Keymap k __attribute__((__unused__)))
1.70      christos 2335: {
                   2336:        return 0;
                   2337: }
                   2338:
                   2339: int
                   2340: /*ARGSUSED*/
1.97      christos 2341: rl_bind_key_in_map(int key __attribute__((__unused__)),
                   2342:     rl_command_func_t *fun __attribute__((__unused__)),
                   2343:     Keymap k __attribute__((__unused__)))
1.70      christos 2344: {
                   2345:        return 0;
                   2346: }
1.85      christos 2347:
                   2348: /* unsupported, but needed by python */
                   2349: void
                   2350: rl_cleanup_after_signal(void)
                   2351: {
                   2352: }
1.90      christos 2353:
                   2354: int
                   2355: rl_on_new_line(void)
                   2356: {
                   2357:        return 0;
                   2358: }
1.105     christos 2359:
                   2360: void
                   2361: rl_free_line_state(void)
                   2362: {
                   2363: }
1.118     christos 2364:
                   2365: int
                   2366: /*ARGSUSED*/
1.120     christos 2367: rl_set_keyboard_input_timeout(int u __attribute__((__unused__)))
1.118     christos 2368: {
                   2369:        return 0;
                   2370: }

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