Annotation of src/lib/libedit/readline.c, Revision 1.106
1.106 ! christos 1: /* $NetBSD: readline.c,v 1.105 2012/07/12 18:46:20 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)
1.106 ! christos 34: __RCSID("$NetBSD: readline.c,v 1.105 2012/07/12 18:46:20 christos Exp $");
1.1 christos 35: #endif /* not lint && not SCCSID */
36:
37: #include <sys/types.h>
38: #include <sys/stat.h>
39: #include <stdio.h>
40: #include <dirent.h>
41: #include <string.h>
42: #include <pwd.h>
43: #include <ctype.h>
44: #include <stdlib.h>
45: #include <unistd.h>
46: #include <limits.h>
1.38 christos 47: #include <errno.h>
48: #include <fcntl.h>
1.70 christos 49: #include <setjmp.h>
1.35 christos 50: #include <vis.h>
1.97 christos 51:
1.79 sketch 52: #include "readline/readline.h"
1.45 christos 53: #include "el.h"
54: #include "fcns.h" /* for EL_NUM_FCNS */
1.1 christos 55: #include "histedit.h"
1.53 dsl 56: #include "filecomplete.h"
1.1 christos 57:
1.68 christos 58: void rl_prep_terminal(int);
59: void rl_deprep_terminal(void);
60:
1.1 christos 61: /* for rl_complete() */
1.40 christos 62: #define TAB '\r'
1.1 christos 63:
64: /* see comment at the #ifdef for sense of this */
1.40 christos 65: /* #define GDB_411_HACK */
1.1 christos 66:
67: /* readline compatibility stuff - look at readline sources/documentation */
68: /* to see what these variables mean */
1.11 lukem 69: const char *rl_library_version = "EditLine wrapper";
1.85 christos 70: int rl_readline_version = RL_READLINE_VERSION;
1.20 christos 71: static char empty[] = { '\0' };
72: static char expand_chars[] = { ' ', '\t', '\n', '=', '(', '\0' };
73: static char break_chars[] = { ' ', '\t', '\n', '"', '\\', '\'', '`', '@', '$',
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;
1.55 agc 81: VCPFunction *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;
1.11 lukem 87:
88: int history_base = 1; /* probably never subject to change */
89: int history_length = 0;
90: int max_input_history = 0;
91: char history_expansion_char = '!';
92: char history_subst_char = '^';
1.20 christos 93: char *history_no_expand_chars = expand_chars;
1.11 lukem 94: Function *history_inhibit_expansion_function = NULL;
1.40 christos 95: char *history_arg_extract(int start, int end, const char *str);
1.11 lukem 96:
97: int rl_inhibit_completion = 0;
98: int rl_attempted_completion_over = 0;
1.20 christos 99: char *rl_basic_word_break_characters = break_chars;
1.11 lukem 100: char *rl_completer_word_break_characters = NULL;
101: char *rl_completer_quote_characters = NULL;
1.34 christos 102: Function *rl_completion_entry_function = NULL;
1.103 christos 103: char *(*rl_completion_word_break_hook)(void) = NULL;
1.11 lukem 104: CPPFunction *rl_attempted_completion_function = NULL;
1.32 christos 105: Function *rl_pre_input_hook = NULL;
106: Function *rl_startup1_hook = NULL;
1.72 christos 107: int (*rl_getc_function)(FILE *) = NULL;
1.32 christos 108: char *rl_terminal_name = NULL;
109: int rl_already_prompted = 0;
110: int rl_filename_completion_desired = 0;
111: int rl_ignore_completion_duplicates = 0;
1.39 christos 112: int rl_catch_signals = 1;
1.70 christos 113: int readline_echoing_p = 1;
114: int _rl_print_completions_horizontally = 0;
1.32 christos 115: VFunction *rl_redisplay_function = NULL;
1.33 christos 116: Function *rl_startup_hook = NULL;
1.34 christos 117: VFunction *rl_completion_display_matches_hook = NULL;
1.68 christos 118: VFunction *rl_prep_term_function = (VFunction *)rl_prep_terminal;
119: VFunction *rl_deprep_term_function = (VFunction *)rl_deprep_terminal;
1.85 christos 120: KEYMAP_ENTRY_ARRAY emacs_meta_keymap;
1.1 christos 121:
1.12 jdolecek 122: /*
1.32 christos 123: * The current prompt string.
124: */
125: char *rl_prompt = NULL;
126: /*
1.12 jdolecek 127: * This is set to character indicating type of completion being done by
128: * rl_complete_internal(); this is available for application completion
129: * functions.
130: */
131: int rl_completion_type = 0;
132:
133: /*
134: * If more than this number of items results from query for possible
135: * completions, we ask user if they are sure to really display the list.
136: */
137: int rl_completion_query_items = 100;
138:
139: /*
1.15 jdolecek 140: * List of characters which are word break characters, but should be left
141: * in the parsed text when it is passed to the completion function.
142: * Shell uses this to help determine what kind of completing to do.
1.12 jdolecek 143: */
1.53 dsl 144: char *rl_special_prefixes = NULL;
1.15 jdolecek 145:
146: /*
147: * This is the character appended to the completed words if at the end of
148: * the line. Default is ' ' (a space).
149: */
150: int rl_completion_append_character = ' ';
151:
152: /* stuff below is used internally by libedit for readline emulation */
153:
1.92 christos 154: static History *h = NULL;
1.1 christos 155: static EditLine *e = NULL;
1.35 christos 156: static Function *map[256];
1.70 christos 157: static jmp_buf topbuf;
1.1 christos 158:
159: /* internal functions */
1.11 lukem 160: static unsigned char _el_rl_complete(EditLine *, int);
1.46 christos 161: static unsigned char _el_rl_tstp(EditLine *, int);
1.11 lukem 162: static char *_get_prompt(EditLine *);
1.59 christos 163: static int _getc_function(EditLine *, char *);
1.11 lukem 164: static HIST_ENTRY *_move_history(int);
1.40 christos 165: static int _history_expand_command(const char *, size_t, size_t,
166: char **);
1.11 lukem 167: static char *_rl_compat_sub(const char *, const char *,
1.40 christos 168: const char *, int);
1.38 christos 169: static int _rl_event_read_char(EditLine *, char *);
1.49 christos 170: static void _rl_update_pos(void);
1.1 christos 171:
1.5 christos 172:
173: /* ARGSUSED */
1.1 christos 174: static char *
1.30 christos 175: _get_prompt(EditLine *el __attribute__((__unused__)))
1.1 christos 176: {
1.32 christos 177: rl_already_prompted = 1;
1.96 christos 178: return rl_prompt;
1.1 christos 179: }
180:
1.11 lukem 181:
1.1 christos 182: /*
183: * generic function for moving around history
184: */
1.2 christos 185: static HIST_ENTRY *
1.11 lukem 186: _move_history(int op)
1.1 christos 187: {
1.92 christos 188: HistEvent ev;
1.1 christos 189: static HIST_ENTRY rl_he;
190:
1.92 christos 191: if (history(h, &ev, op) != 0)
1.96 christos 192: return NULL;
1.1 christos 193:
1.92 christos 194: rl_he.line = ev.str;
1.40 christos 195: rl_he.data = NULL;
1.1 christos 196:
1.96 christos 197: return &rl_he;
1.1 christos 198: }
199:
200:
1.7 simonb 201: /*
1.59 christos 202: * read one key from user defined input function
203: */
204: static int
1.61 christos 205: /*ARGSUSED*/
1.97 christos 206: _getc_function(EditLine *el __attribute__((__unused__)), char *c)
1.59 christos 207: {
208: int i;
209:
1.72 christos 210: i = (*rl_getc_function)(NULL);
1.59 christos 211: if (i == -1)
212: return 0;
1.99 christos 213: *c = (char)i;
1.59 christos 214: return 1;
215: }
216:
1.91 christos 217: static void
218: _resize_fun(EditLine *el, void *a)
219: {
220: const LineInfo *li;
221: char **ap = a;
222:
223: li = el_line(el);
224: /* a cheesy way to get rid of const cast. */
1.98 christos 225: *ap = memchr(li->buffer, *li->buffer, (size_t)1);
1.91 christos 226: }
227:
1.85 christos 228: static const char *
229: _default_history_file(void)
230: {
231: struct passwd *p;
232: static char path[PATH_MAX];
233:
234: if (*path)
235: return path;
236: if ((p = getpwuid(getuid())) == NULL)
237: return NULL;
1.98 christos 238: (void)snprintf(path, sizeof(path), "%s/.history", p->pw_dir);
1.85 christos 239: return path;
240: }
1.59 christos 241:
242: /*
1.7 simonb 243: * READLINE compatibility stuff
1.1 christos 244: */
245:
246: /*
1.78 christos 247: * Set the prompt
248: */
249: int
250: rl_set_prompt(const char *prompt)
251: {
1.82 christos 252: char *p;
253:
1.78 christos 254: if (!prompt)
255: prompt = "";
256: if (rl_prompt != NULL && strcmp(rl_prompt, prompt) == 0)
257: return 0;
258: if (rl_prompt)
1.95 christos 259: el_free(rl_prompt);
1.78 christos 260: rl_prompt = strdup(prompt);
1.82 christos 261: if (rl_prompt == NULL)
262: return -1;
263:
264: while ((p = strchr(rl_prompt, RL_PROMPT_END_IGNORE)) != NULL)
265: *p = RL_PROMPT_START_IGNORE;
266:
267: return 0;
1.78 christos 268: }
269:
270: /*
1.1 christos 271: * initialize rl compat stuff
272: */
273: int
1.11 lukem 274: rl_initialize(void)
1.1 christos 275: {
1.92 christos 276: HistEvent ev;
1.18 christos 277: int editmode = 1;
278: struct termios t;
1.1 christos 279:
280: if (e != NULL)
281: el_end(e);
282: if (h != NULL)
1.92 christos 283: history_end(h);
1.1 christos 284:
285: if (!rl_instream)
286: rl_instream = stdin;
287: if (!rl_outstream)
288: rl_outstream = stdout;
1.18 christos 289:
290: /*
291: * See if we don't really want to run the editor
292: */
293: if (tcgetattr(fileno(rl_instream), &t) != -1 && (t.c_lflag & ECHO) == 0)
294: editmode = 0;
295:
1.4 christos 296: e = el_init(rl_readline_name, rl_instream, rl_outstream, stderr);
1.18 christos 297:
298: if (!editmode)
1.92 christos 299: el_set(e, EL_EDITMODE, 0);
1.1 christos 300:
1.92 christos 301: h = history_init();
1.1 christos 302: if (!e || !h)
1.96 christos 303: return -1;
1.1 christos 304:
1.92 christos 305: history(h, &ev, H_SETSIZE, INT_MAX); /* unlimited */
1.1 christos 306: history_length = 0;
307: max_input_history = INT_MAX;
308: el_set(e, EL_HIST, history, h);
309:
1.91 christos 310: /* Setup resize function */
311: el_set(e, EL_RESIZE, _resize_fun, &rl_line_buffer);
312:
1.59 christos 313: /* setup getc function if valid */
314: if (rl_getc_function)
315: el_set(e, EL_GETCFN, _getc_function);
316:
1.1 christos 317: /* for proper prompt printing in readline() */
1.78 christos 318: if (rl_set_prompt("") == -1) {
1.92 christos 319: history_end(h);
1.23 christos 320: el_end(e);
321: return -1;
322: }
1.82 christos 323: el_set(e, EL_PROMPT, _get_prompt, RL_PROMPT_START_IGNORE);
1.39 christos 324: el_set(e, EL_SIGNAL, rl_catch_signals);
1.1 christos 325:
326: /* set default mode to "emacs"-style and read setting afterwards */
327: /* so this can be overriden */
328: el_set(e, EL_EDITOR, "emacs");
1.32 christos 329: if (rl_terminal_name != NULL)
330: el_set(e, EL_TERMINAL, rl_terminal_name);
331: else
332: el_get(e, EL_TERMINAL, &rl_terminal_name);
1.1 christos 333:
1.12 jdolecek 334: /*
1.35 christos 335: * Word completion - this has to go AFTER rebinding keys
1.12 jdolecek 336: * to emacs-style.
337: */
1.1 christos 338: el_set(e, EL_ADDFN, "rl_complete",
1.35 christos 339: "ReadLine compatible completion function",
1.11 lukem 340: _el_rl_complete);
1.1 christos 341: el_set(e, EL_BIND, "^I", "rl_complete", NULL);
1.46 christos 342:
343: /*
344: * Send TSTP when ^Z is pressed.
345: */
346: el_set(e, EL_ADDFN, "rl_tstp",
347: "ReadLine compatible suspend function",
348: _el_rl_tstp);
349: el_set(e, EL_BIND, "^Z", "rl_tstp", NULL);
1.12 jdolecek 350:
1.1 christos 351: /* read settings from configuration file */
352: el_source(e, NULL);
353:
1.12 jdolecek 354: /*
355: * Unfortunately, some applications really do use rl_point
356: * and rl_line_buffer directly.
357: */
1.91 christos 358: _resize_fun(e, &rl_line_buffer);
1.49 christos 359: _rl_update_pos();
1.1 christos 360:
1.32 christos 361: if (rl_startup_hook)
362: (*rl_startup_hook)(NULL, 0);
363:
1.96 christos 364: return 0;
1.1 christos 365: }
366:
1.11 lukem 367:
1.1 christos 368: /*
369: * read one line from input stream and return it, chomping
370: * trailing newline (if there is any)
371: */
372: char *
1.70 christos 373: readline(const char *p)
1.1 christos 374: {
1.92 christos 375: HistEvent ev;
1.70 christos 376: const char * volatile prompt = p;
1.3 thorpej 377: int count;
1.1 christos 378: const char *ret;
1.20 christos 379: char *buf;
1.38 christos 380: static int used_event_hook;
1.1 christos 381:
382: if (e == NULL || h == NULL)
383: rl_initialize();
384:
1.38 christos 385: rl_done = 0;
386:
1.70 christos 387: (void)setjmp(topbuf);
388:
1.9 jdolecek 389: /* update prompt accordingly to what has been passed */
1.78 christos 390: if (rl_set_prompt(prompt) == -1)
391: return NULL;
1.32 christos 392:
393: if (rl_pre_input_hook)
394: (*rl_pre_input_hook)(NULL, 0);
395:
1.38 christos 396: if (rl_event_hook && !(e->el_flags&NO_TTY)) {
397: el_set(e, EL_GETCFN, _rl_event_read_char);
398: used_event_hook = 1;
399: }
400:
401: if (!rl_event_hook && used_event_hook) {
402: el_set(e, EL_GETCFN, EL_BUILTIN_GETCFN);
403: used_event_hook = 0;
404: }
405:
1.32 christos 406: rl_already_prompted = 0;
407:
1.1 christos 408: /* get one line from input stream */
409: ret = el_gets(e, &count);
410:
411: if (ret && count > 0) {
1.5 christos 412: int lastidx;
1.1 christos 413:
1.20 christos 414: buf = strdup(ret);
1.23 christos 415: if (buf == NULL)
416: return NULL;
1.1 christos 417: lastidx = count - 1;
1.20 christos 418: if (buf[lastidx] == '\n')
419: buf[lastidx] = '\0';
1.1 christos 420: } else
1.20 christos 421: buf = NULL;
1.1 christos 422:
1.92 christos 423: history(h, &ev, H_GETSIZE);
1.1 christos 424: history_length = ev.num;
425:
1.20 christos 426: return buf;
1.1 christos 427: }
428:
429: /*
430: * history functions
431: */
432:
433: /*
434: * is normally called before application starts to use
435: * history expansion functions
436: */
437: void
1.11 lukem 438: using_history(void)
1.1 christos 439: {
440: if (h == NULL || e == NULL)
441: rl_initialize();
442: }
443:
1.11 lukem 444:
1.1 christos 445: /*
446: * substitute ``what'' with ``with'', returning resulting string; if
1.29 wiz 447: * globally == 1, substitutes all occurrences of what, otherwise only the
1.1 christos 448: * first one
449: */
1.11 lukem 450: static char *
451: _rl_compat_sub(const char *str, const char *what, const char *with,
452: int globally)
453: {
1.40 christos 454: const char *s;
455: char *r, *result;
456: size_t len, with_len, what_len;
1.1 christos 457:
1.40 christos 458: len = strlen(str);
459: with_len = strlen(with);
460: what_len = strlen(what);
461:
462: /* calculate length we need for result */
463: s = str;
464: while (*s) {
465: if (*s == *what && !strncmp(s, what, what_len)) {
466: len += with_len - what_len;
467: if (!globally)
468: break;
469: s += what_len;
470: } else
471: s++;
472: }
1.95 christos 473: r = result = el_malloc((len + 1) * sizeof(*r));
1.23 christos 474: if (result == NULL)
475: return NULL;
1.40 christos 476: s = str;
477: while (*s) {
478: if (*s == *what && !strncmp(s, what, what_len)) {
479: (void)strncpy(r, with, with_len);
480: r += with_len;
481: s += what_len;
482: if (!globally) {
483: (void)strcpy(r, s);
1.96 christos 484: return result;
1.1 christos 485: }
1.40 christos 486: } else
487: *r++ = *s++;
488: }
1.76 christos 489: *r = '\0';
1.96 christos 490: return result;
1.40 christos 491: }
492:
493: static char *last_search_pat; /* last !?pat[?] search pattern */
494: static char *last_search_match; /* last !?pat[?] that matched */
495:
496: const char *
497: get_history_event(const char *cmd, int *cindex, int qchar)
498: {
499: int idx, sign, sub, num, begin, ret;
500: size_t len;
501: char *pat;
502: const char *rptr;
1.92 christos 503: HistEvent ev;
1.40 christos 504:
505: idx = *cindex;
506: if (cmd[idx++] != history_expansion_char)
1.96 christos 507: return NULL;
1.40 christos 508:
509: /* find out which event to take */
1.76 christos 510: if (cmd[idx] == history_expansion_char || cmd[idx] == '\0') {
1.92 christos 511: if (history(h, &ev, H_FIRST) != 0)
1.96 christos 512: return NULL;
1.40 christos 513: *cindex = cmd[idx]? (idx + 1):idx;
1.92 christos 514: return ev.str;
1.40 christos 515: }
516: sign = 0;
517: if (cmd[idx] == '-') {
518: sign = 1;
519: idx++;
520: }
521:
522: if ('0' <= cmd[idx] && cmd[idx] <= '9') {
523: HIST_ENTRY *rl_he;
524:
525: num = 0;
526: while (cmd[idx] && '0' <= cmd[idx] && cmd[idx] <= '9') {
527: num = num * 10 + cmd[idx] - '0';
528: idx++;
529: }
530: if (sign)
531: num = history_length - num + 1;
532:
533: if (!(rl_he = history_get(num)))
1.96 christos 534: return NULL;
1.40 christos 535:
536: *cindex = idx;
1.96 christos 537: return rl_he->line;
1.40 christos 538: }
539: sub = 0;
540: if (cmd[idx] == '?') {
541: sub = 1;
542: idx++;
543: }
544: begin = idx;
545: while (cmd[idx]) {
546: if (cmd[idx] == '\n')
547: break;
548: if (sub && cmd[idx] == '?')
549: break;
550: if (!sub && (cmd[idx] == ':' || cmd[idx] == ' '
551: || cmd[idx] == '\t' || cmd[idx] == qchar))
552: break;
553: idx++;
554: }
1.99 christos 555: len = (size_t)idx - (size_t)begin;
1.40 christos 556: if (sub && cmd[idx] == '?')
557: idx++;
558: if (sub && len == 0 && last_search_pat && *last_search_pat)
559: pat = last_search_pat;
560: else if (len == 0)
1.96 christos 561: return NULL;
1.40 christos 562: else {
1.95 christos 563: if ((pat = el_malloc((len + 1) * sizeof(*pat))) == NULL)
1.40 christos 564: return NULL;
565: (void)strncpy(pat, cmd + begin, len);
566: pat[len] = '\0';
567: }
568:
1.92 christos 569: if (history(h, &ev, H_CURR) != 0) {
1.40 christos 570: if (pat != last_search_pat)
1.95 christos 571: el_free(pat);
1.96 christos 572: return NULL;
1.40 christos 573: }
574: num = ev.num;
575:
576: if (sub) {
577: if (pat != last_search_pat) {
578: if (last_search_pat)
1.95 christos 579: el_free(last_search_pat);
1.40 christos 580: last_search_pat = pat;
1.1 christos 581: }
1.40 christos 582: ret = history_search(pat, -1);
583: } else
584: ret = history_search_prefix(pat, -1);
585:
586: if (ret == -1) {
587: /* restore to end of list on failed search */
1.92 christos 588: history(h, &ev, H_FIRST);
1.40 christos 589: (void)fprintf(rl_outstream, "%s: Event not found\n", pat);
590: if (pat != last_search_pat)
1.95 christos 591: el_free(pat);
1.96 christos 592: return NULL;
1.40 christos 593: }
594:
595: if (sub && len) {
596: if (last_search_match && last_search_match != pat)
1.95 christos 597: el_free(last_search_match);
1.40 christos 598: last_search_match = pat;
599: }
600:
601: if (pat != last_search_pat)
1.95 christos 602: el_free(pat);
1.40 christos 603:
1.92 christos 604: if (history(h, &ev, H_CURR) != 0)
1.96 christos 605: return NULL;
1.40 christos 606: *cindex = idx;
1.92 christos 607: rptr = ev.str;
1.40 christos 608:
609: /* roll back to original position */
1.92 christos 610: (void)history(h, &ev, H_SET, num);
1.1 christos 611:
1.40 christos 612: return rptr;
1.1 christos 613: }
614:
615: /*
616: * the real function doing history expansion - takes as argument command
617: * to do and data upon which the command should be executed
618: * does expansion the way I've understood readline documentation
619: *
620: * returns 0 if data was not modified, 1 if it was and 2 if the string
621: * should be only printed and not executed; in case of error,
622: * returns -1 and *result points to NULL
623: * it's callers responsibility to free() string returned in *result
624: */
625: static int
1.40 christos 626: _history_expand_command(const char *command, size_t offs, size_t cmdlen,
627: char **result)
1.11 lukem 628: {
1.40 christos 629: char *tmp, *search = NULL, *aptr;
630: const char *ptr, *cmd;
1.11 lukem 631: static char *from = NULL, *to = NULL;
1.40 christos 632: int start, end, idx, has_mods = 0;
633: int p_on = 0, g_on = 0;
1.1 christos 634:
635: *result = NULL;
1.40 christos 636: aptr = NULL;
1.41 christos 637: ptr = NULL;
1.1 christos 638:
1.40 christos 639: /* First get event specifier */
640: idx = 0;
1.1 christos 641:
1.40 christos 642: if (strchr(":^*$", command[offs + 1])) {
643: char str[4];
644: /*
645: * "!:" is shorthand for "!!:".
646: * "!^", "!*" and "!$" are shorthand for
647: * "!!:^", "!!:*" and "!!:$" respectively.
648: */
649: str[0] = str[1] = '!';
650: str[2] = '0';
651: ptr = get_history_event(str, &idx, 0);
652: idx = (command[offs + 1] == ':')? 1:0;
653: has_mods = 1;
1.1 christos 654: } else {
1.40 christos 655: if (command[offs + 1] == '#') {
656: /* use command so far */
1.95 christos 657: if ((aptr = el_malloc((offs + 1) * sizeof(*aptr)))
658: == NULL)
1.40 christos 659: return -1;
660: (void)strncpy(aptr, command, offs);
661: aptr[offs] = '\0';
662: idx = 1;
1.1 christos 663: } else {
1.40 christos 664: int qchar;
665:
666: qchar = (offs > 0 && command[offs - 1] == '"')? '"':0;
667: ptr = get_history_event(command + offs, &idx, qchar);
668: }
1.99 christos 669: has_mods = command[offs + (size_t)idx] == ':';
1.40 christos 670: }
1.1 christos 671:
1.40 christos 672: if (ptr == NULL && aptr == NULL)
1.96 christos 673: return -1;
1.1 christos 674:
1.40 christos 675: if (!has_mods) {
1.85 christos 676: *result = strdup(aptr ? aptr : ptr);
1.40 christos 677: if (aptr)
1.95 christos 678: el_free(aptr);
1.85 christos 679: if (*result == NULL)
680: return -1;
1.96 christos 681: return 1;
1.40 christos 682: }
683:
684: cmd = command + offs + idx + 1;
685:
686: /* Now parse any word designators */
687:
688: if (*cmd == '%') /* last word matched by ?pat? */
689: tmp = strdup(last_search_match? last_search_match:"");
690: else if (strchr("^*$-0123456789", *cmd)) {
691: start = end = -1;
692: if (*cmd == '^')
693: start = end = 1, cmd++;
694: else if (*cmd == '$')
695: start = -1, cmd++;
696: else if (*cmd == '*')
697: start = 1, cmd++;
698: else if (*cmd == '-' || isdigit((unsigned char) *cmd)) {
699: start = 0;
700: while (*cmd && '0' <= *cmd && *cmd <= '9')
701: start = start * 10 + *cmd++ - '0';
702:
703: if (*cmd == '-') {
704: if (isdigit((unsigned char) cmd[1])) {
705: cmd++;
706: end = 0;
707: while (*cmd && '0' <= *cmd && *cmd <= '9')
708: end = end * 10 + *cmd++ - '0';
709: } else if (cmd[1] == '$') {
710: cmd += 2;
711: end = -1;
712: } else {
713: cmd++;
714: end = -2;
715: }
716: } else if (*cmd == '*')
717: end = -1, cmd++;
1.1 christos 718: else
1.40 christos 719: end = start;
720: }
721: tmp = history_arg_extract(start, end, aptr? aptr:ptr);
722: if (tmp == NULL) {
723: (void)fprintf(rl_outstream, "%s: Bad word specifier",
724: command + offs + idx);
725: if (aptr)
1.95 christos 726: el_free(aptr);
1.96 christos 727: return -1;
1.40 christos 728: }
729: } else
730: tmp = strdup(aptr? aptr:ptr);
1.1 christos 731:
1.40 christos 732: if (aptr)
1.95 christos 733: el_free(aptr);
1.1 christos 734:
1.77 lukem 735: if (*cmd == '\0' || ((size_t)(cmd - (command + offs)) >= cmdlen)) {
1.40 christos 736: *result = tmp;
1.96 christos 737: return 1;
1.1 christos 738: }
739:
740: for (; *cmd; cmd++) {
741: if (*cmd == ':')
742: continue;
1.40 christos 743: else if (*cmd == 'h') { /* remove trailing path */
744: if ((aptr = strrchr(tmp, '/')) != NULL)
1.76 christos 745: *aptr = '\0';
1.40 christos 746: } else if (*cmd == 't') { /* remove leading path */
747: if ((aptr = strrchr(tmp, '/')) != NULL) {
748: aptr = strdup(aptr + 1);
1.95 christos 749: el_free(tmp);
1.40 christos 750: tmp = aptr;
751: }
752: } else if (*cmd == 'r') { /* remove trailing suffix */
753: if ((aptr = strrchr(tmp, '.')) != NULL)
1.76 christos 754: *aptr = '\0';
1.40 christos 755: } else if (*cmd == 'e') { /* remove all but suffix */
756: if ((aptr = strrchr(tmp, '.')) != NULL) {
757: aptr = strdup(aptr);
1.95 christos 758: el_free(tmp);
1.40 christos 759: tmp = aptr;
760: }
761: } else if (*cmd == 'p') /* print only */
762: p_on = 1;
1.1 christos 763: else if (*cmd == 'g')
764: g_on = 2;
765: else if (*cmd == 's' || *cmd == '&') {
1.11 lukem 766: char *what, *with, delim;
1.30 christos 767: size_t len, from_len;
1.5 christos 768: size_t size;
1.1 christos 769:
770: if (*cmd == '&' && (from == NULL || to == NULL))
771: continue;
772: else if (*cmd == 's') {
773: delim = *(++cmd), cmd++;
774: size = 16;
1.95 christos 775: what = el_realloc(from, size * sizeof(*what));
1.23 christos 776: if (what == NULL) {
1.95 christos 777: el_free(from);
778: el_free(tmp);
1.28 christos 779: return 0;
1.23 christos 780: }
1.1 christos 781: len = 0;
782: for (; *cmd && *cmd != delim; cmd++) {
1.40 christos 783: if (*cmd == '\\' && cmd[1] == delim)
1.1 christos 784: cmd++;
1.23 christos 785: if (len >= size) {
786: char *nwhat;
1.95 christos 787: nwhat = el_realloc(what,
788: (size <<= 1) *
789: sizeof(*nwhat));
1.23 christos 790: if (nwhat == NULL) {
1.95 christos 791: el_free(what);
792: el_free(tmp);
1.28 christos 793: return 0;
1.23 christos 794: }
795: what = nwhat;
796: }
1.1 christos 797: what[len++] = *cmd;
798: }
799: what[len] = '\0';
800: from = what;
801: if (*what == '\0') {
1.95 christos 802: el_free(what);
1.23 christos 803: if (search) {
1.1 christos 804: from = strdup(search);
1.62 christos 805: if (from == NULL) {
1.95 christos 806: el_free(tmp);
1.28 christos 807: return 0;
1.62 christos 808: }
1.23 christos 809: } else {
1.1 christos 810: from = NULL;
1.95 christos 811: el_free(tmp);
1.96 christos 812: return -1;
1.1 christos 813: }
814: }
815: cmd++; /* shift after delim */
816: if (!*cmd)
817: continue;
818:
819: size = 16;
1.95 christos 820: with = el_realloc(to, size * sizeof(*with));
1.23 christos 821: if (with == NULL) {
1.95 christos 822: el_free(to);
823: el_free(tmp);
1.23 christos 824: return -1;
825: }
1.1 christos 826: len = 0;
827: from_len = strlen(from);
828: for (; *cmd && *cmd != delim; cmd++) {
829: if (len + from_len + 1 >= size) {
1.23 christos 830: char *nwith;
1.1 christos 831: size += from_len + 1;
1.95 christos 832: nwith = el_realloc(with,
833: size * sizeof(*nwith));
1.23 christos 834: if (nwith == NULL) {
1.95 christos 835: el_free(with);
836: el_free(tmp);
1.23 christos 837: return -1;
838: }
839: with = nwith;
1.1 christos 840: }
841: if (*cmd == '&') {
842: /* safe */
1.40 christos 843: (void)strcpy(&with[len], from);
1.1 christos 844: len += from_len;
845: continue;
846: }
847: if (*cmd == '\\'
848: && (*(cmd + 1) == delim
849: || *(cmd + 1) == '&'))
850: cmd++;
851: with[len++] = *cmd;
852: }
853: with[len] = '\0';
854: to = with;
855: }
856:
1.40 christos 857: aptr = _rl_compat_sub(tmp, from, to, g_on);
858: if (aptr) {
1.95 christos 859: el_free(tmp);
1.40 christos 860: tmp = aptr;
1.23 christos 861: }
1.40 christos 862: g_on = 0;
1.1 christos 863: }
1.5 christos 864: }
1.40 christos 865: *result = tmp;
1.96 christos 866: return p_on? 2:1;
1.1 christos 867: }
868:
1.11 lukem 869:
1.1 christos 870: /*
871: * csh-style history expansion
872: */
873: int
1.11 lukem 874: history_expand(char *str, char **output)
875: {
1.40 christos 876: int ret = 0;
877: size_t idx, i, size;
878: char *tmp, *result;
1.1 christos 879:
880: if (h == NULL || e == NULL)
881: rl_initialize();
882:
1.40 christos 883: if (history_expansion_char == 0) {
884: *output = strdup(str);
1.96 christos 885: return 0;
1.40 christos 886: }
1.1 christos 887:
1.40 christos 888: *output = NULL;
1.1 christos 889: if (str[0] == history_subst_char) {
890: /* ^foo^foo2^ is equivalent to !!:s^foo^foo2^ */
1.100 christos 891: *output = el_malloc((strlen(str) + 4 + 1) * sizeof(**output));
1.40 christos 892: if (*output == NULL)
893: return 0;
894: (*output)[0] = (*output)[1] = history_expansion_char;
895: (*output)[2] = ':';
896: (*output)[3] = 's';
897: (void)strcpy((*output) + 4, str);
898: str = *output;
899: } else {
900: *output = strdup(str);
901: if (*output == NULL)
902: return 0;
1.1 christos 903: }
1.40 christos 904:
1.63 christos 905: #define ADD_STRING(what, len, fr) \
1.1 christos 906: { \
1.23 christos 907: if (idx + len + 1 > size) { \
1.95 christos 908: char *nresult = el_realloc(result, \
909: (size += len + 1) * sizeof(*nresult)); \
1.23 christos 910: if (nresult == NULL) { \
1.95 christos 911: el_free(*output); \
1.65 christos 912: if (/*CONSTCOND*/fr) \
1.95 christos 913: el_free(tmp); \
1.28 christos 914: return 0; \
1.23 christos 915: } \
916: result = nresult; \
917: } \
1.1 christos 918: (void)strncpy(&result[idx], what, len); \
919: idx += len; \
920: result[idx] = '\0'; \
921: }
922:
923: result = NULL;
924: size = idx = 0;
1.64 christos 925: tmp = NULL;
1.1 christos 926: for (i = 0; str[i];) {
1.40 christos 927: int qchar, loop_again;
928: size_t len, start, j;
1.1 christos 929:
1.40 christos 930: qchar = 0;
1.1 christos 931: loop_again = 1;
932: start = j = i;
933: loop:
934: for (; str[j]; j++) {
935: if (str[j] == '\\' &&
936: str[j + 1] == history_expansion_char) {
1.40 christos 937: (void)strcpy(&str[j], &str[j + 1]);
1.1 christos 938: continue;
939: }
940: if (!loop_again) {
1.40 christos 941: if (isspace((unsigned char) str[j])
942: || str[j] == qchar)
1.1 christos 943: break;
944: }
945: if (str[j] == history_expansion_char
946: && !strchr(history_no_expand_chars, str[j + 1])
947: && (!history_inhibit_expansion_function ||
1.40 christos 948: (*history_inhibit_expansion_function)(str,
949: (int)j) == 0))
1.1 christos 950: break;
951: }
952:
1.40 christos 953: if (str[j] && loop_again) {
1.1 christos 954: i = j;
1.40 christos 955: qchar = (j > 0 && str[j - 1] == '"' )? '"':0;
1.1 christos 956: j++;
957: if (str[j] == history_expansion_char)
958: j++;
959: loop_again = 0;
960: goto loop;
961: }
962: len = i - start;
1.64 christos 963: ADD_STRING(&str[start], len, 0);
1.1 christos 964:
1.40 christos 965: if (str[i] == '\0' || str[i] != history_expansion_char) {
1.1 christos 966: len = j - i;
1.64 christos 967: ADD_STRING(&str[i], len, 0);
1.1 christos 968: if (start == 0)
1.40 christos 969: ret = 0;
1.1 christos 970: else
1.40 christos 971: ret = 1;
1.1 christos 972: break;
973: }
1.40 christos 974: ret = _history_expand_command (str, i, (j - i), &tmp);
975: if (ret > 0 && tmp) {
976: len = strlen(tmp);
1.63 christos 977: ADD_STRING(tmp, len, 1);
1.66 christos 978: }
979: if (tmp) {
1.95 christos 980: el_free(tmp);
1.64 christos 981: tmp = NULL;
1.1 christos 982: }
983: i = j;
1.40 christos 984: }
1.1 christos 985:
1.40 christos 986: /* ret is 2 for "print only" option */
987: if (ret == 2) {
988: add_history(result);
1.1 christos 989: #ifdef GDB_411_HACK
990: /* gdb 4.11 has been shipped with readline, where */
991: /* history_expand() returned -1 when the line */
992: /* should not be executed; in readline 2.1+ */
993: /* it should return 2 in such a case */
1.40 christos 994: ret = -1;
1.1 christos 995: #endif
996: }
1.95 christos 997: el_free(*output);
1.1 christos 998: *output = result;
999:
1.96 christos 1000: return ret;
1.1 christos 1001: }
1002:
1.40 christos 1003: /*
1004: * Return a string consisting of arguments of "str" from "start" to "end".
1005: */
1006: char *
1007: history_arg_extract(int start, int end, const char *str)
1008: {
1009: size_t i, len, max;
1.84 christos 1010: char **arr, *result = NULL;
1.40 christos 1011:
1012: arr = history_tokenize(str);
1013: if (!arr)
1.84 christos 1014: return NULL;
1015: if (arr && *arr == NULL)
1016: goto out;
1.40 christos 1017:
1018: for (max = 0; arr[max]; max++)
1019: continue;
1020: max--;
1021:
1022: if (start == '$')
1.80 christos 1023: start = (int)max;
1.40 christos 1024: if (end == '$')
1.80 christos 1025: end = (int)max;
1.40 christos 1026: if (end < 0)
1.80 christos 1027: end = (int)max + end + 1;
1.40 christos 1028: if (start < 0)
1029: start = end;
1030:
1.84 christos 1031: if (start < 0 || end < 0 || (size_t)start > max ||
1032: (size_t)end > max || start > end)
1033: goto out;
1.40 christos 1034:
1.99 christos 1035: for (i = (size_t)start, len = 0; i <= (size_t)end; i++)
1.40 christos 1036: len += strlen(arr[i]) + 1;
1037: len++;
1.95 christos 1038: result = el_malloc(len * sizeof(*result));
1.40 christos 1039: if (result == NULL)
1.84 christos 1040: goto out;
1.40 christos 1041:
1.99 christos 1042: for (i = (size_t)start, len = 0; i <= (size_t)end; i++) {
1.40 christos 1043: (void)strcpy(result + len, arr[i]);
1044: len += strlen(arr[i]);
1.77 lukem 1045: if (i < (size_t)end)
1.40 christos 1046: result[len++] = ' ';
1047: }
1.76 christos 1048: result[len] = '\0';
1.40 christos 1049:
1.84 christos 1050: out:
1.40 christos 1051: for (i = 0; arr[i]; i++)
1.95 christos 1052: el_free(arr[i]);
1053: el_free(arr);
1.40 christos 1054:
1.84 christos 1055: return result;
1.40 christos 1056: }
1.11 lukem 1057:
1.1 christos 1058: /*
1.40 christos 1059: * Parse the string into individual tokens,
1060: * similar to how shell would do it.
1.1 christos 1061: */
1062: char **
1.11 lukem 1063: history_tokenize(const char *str)
1.1 christos 1064: {
1.40 christos 1065: int size = 1, idx = 0, i, start;
1.5 christos 1066: size_t len;
1.1 christos 1067: char **result = NULL, *temp, delim = '\0';
1068:
1.40 christos 1069: for (i = 0; str[i];) {
1.4 christos 1070: while (isspace((unsigned char) str[i]))
1.1 christos 1071: i++;
1072: start = i;
1.40 christos 1073: for (; str[i];) {
1.9 jdolecek 1074: if (str[i] == '\\') {
1.14 jdolecek 1075: if (str[i+1] != '\0')
1.9 jdolecek 1076: i++;
1077: } else if (str[i] == delim)
1.1 christos 1078: delim = '\0';
1079: else if (!delim &&
1.11 lukem 1080: (isspace((unsigned char) str[i]) ||
1081: strchr("()<>;&|$", str[i])))
1.1 christos 1082: break;
1083: else if (!delim && strchr("'`\"", str[i]))
1084: delim = str[i];
1.40 christos 1085: if (str[i])
1086: i++;
1.1 christos 1087: }
1088:
1.40 christos 1089: if (idx + 2 >= size) {
1.23 christos 1090: char **nresult;
1.1 christos 1091: size <<= 1;
1.99 christos 1092: nresult = el_realloc(result, (size_t)size * sizeof(*nresult));
1.23 christos 1093: if (nresult == NULL) {
1.95 christos 1094: el_free(result);
1.23 christos 1095: return NULL;
1096: }
1097: result = nresult;
1.1 christos 1098: }
1.99 christos 1099: len = (size_t)i - (size_t)start;
1100: temp = el_malloc((size_t)(len + 1) * sizeof(*temp));
1.23 christos 1101: if (temp == NULL) {
1.40 christos 1102: for (i = 0; i < idx; i++)
1.95 christos 1103: el_free(result[i]);
1104: el_free(result);
1.23 christos 1105: return NULL;
1106: }
1.40 christos 1107: (void)strncpy(temp, &str[start], len);
1.1 christos 1108: temp[len] = '\0';
1.40 christos 1109: result[idx++] = temp;
1110: result[idx] = NULL;
1111: if (str[i])
1112: i++;
1.1 christos 1113: }
1.96 christos 1114: return result;
1.1 christos 1115: }
1116:
1.11 lukem 1117:
1.1 christos 1118: /*
1119: * limit size of history record to ``max'' events
1120: */
1121: void
1.11 lukem 1122: stifle_history(int max)
1.1 christos 1123: {
1.92 christos 1124: HistEvent ev;
1.1 christos 1125:
1126: if (h == NULL || e == NULL)
1127: rl_initialize();
1128:
1.92 christos 1129: if (history(h, &ev, H_SETSIZE, max) == 0)
1.1 christos 1130: max_input_history = max;
1131: }
1132:
1.11 lukem 1133:
1.1 christos 1134: /*
1135: * "unlimit" size of history - set the limit to maximum allowed int value
1136: */
1137: int
1.11 lukem 1138: unstifle_history(void)
1.1 christos 1139: {
1.92 christos 1140: HistEvent ev;
1.1 christos 1141: int omax;
1142:
1.92 christos 1143: history(h, &ev, H_SETSIZE, INT_MAX);
1.1 christos 1144: omax = max_input_history;
1145: max_input_history = INT_MAX;
1.96 christos 1146: return omax; /* some value _must_ be returned */
1.1 christos 1147: }
1148:
1.11 lukem 1149:
1.1 christos 1150: int
1.11 lukem 1151: history_is_stifled(void)
1.1 christos 1152: {
1.11 lukem 1153:
1.1 christos 1154: /* cannot return true answer */
1.96 christos 1155: return max_input_history != INT_MAX;
1.1 christos 1156: }
1157:
1.85 christos 1158: static const char _history_tmp_template[] = "/tmp/.historyXXXXXX";
1159:
1160: int
1161: history_truncate_file (const char *filename, int nlines)
1162: {
1163: int ret = 0;
1164: FILE *fp, *tp;
1165: char template[sizeof(_history_tmp_template)];
1166: char buf[4096];
1167: int fd;
1168: char *cp;
1169: off_t off;
1170: int count = 0;
1171: ssize_t left = 0;
1172:
1173: if (filename == NULL && (filename = _default_history_file()) == NULL)
1174: return errno;
1175: if ((fp = fopen(filename, "r+")) == NULL)
1176: return errno;
1177: strcpy(template, _history_tmp_template);
1178: if ((fd = mkstemp(template)) == -1) {
1179: ret = errno;
1180: goto out1;
1181: }
1182:
1183: if ((tp = fdopen(fd, "r+")) == NULL) {
1184: close(fd);
1185: ret = errno;
1186: goto out2;
1187: }
1188:
1189: for(;;) {
1.98 christos 1190: if (fread(buf, sizeof(buf), (size_t)1, fp) != 1) {
1.85 christos 1191: if (ferror(fp)) {
1192: ret = errno;
1193: break;
1194: }
1195: if (fseeko(fp, (off_t)sizeof(buf) * count, SEEK_SET) ==
1196: (off_t)-1) {
1197: ret = errno;
1198: break;
1199: }
1.99 christos 1200: left = (ssize_t)fread(buf, (size_t)1, sizeof(buf), fp);
1.85 christos 1201: if (ferror(fp)) {
1202: ret = errno;
1203: break;
1204: }
1205: if (left == 0) {
1206: count--;
1207: left = sizeof(buf);
1.98 christos 1208: } else if (fwrite(buf, (size_t)left, (size_t)1, tp)
1209: != 1) {
1.85 christos 1210: ret = errno;
1211: break;
1212: }
1213: fflush(tp);
1214: break;
1215: }
1.98 christos 1216: if (fwrite(buf, sizeof(buf), (size_t)1, tp) != 1) {
1.85 christos 1217: ret = errno;
1218: break;
1219: }
1220: count++;
1221: }
1222: if (ret)
1223: goto out3;
1224: cp = buf + left - 1;
1225: if(*cp != '\n')
1226: cp++;
1227: for(;;) {
1228: while (--cp >= buf) {
1229: if (*cp == '\n') {
1230: if (--nlines == 0) {
1231: if (++cp >= buf + sizeof(buf)) {
1232: count++;
1233: cp = buf;
1234: }
1235: break;
1236: }
1237: }
1238: }
1239: if (nlines <= 0 || count == 0)
1240: break;
1241: count--;
1242: if (fseeko(tp, (off_t)sizeof(buf) * count, SEEK_SET) < 0) {
1243: ret = errno;
1244: break;
1245: }
1.98 christos 1246: if (fread(buf, sizeof(buf), (size_t)1, tp) != 1) {
1.85 christos 1247: if (ferror(tp)) {
1248: ret = errno;
1249: break;
1250: }
1251: ret = EAGAIN;
1252: break;
1253: }
1254: cp = buf + sizeof(buf);
1255: }
1256:
1257: if (ret || nlines > 0)
1258: goto out3;
1259:
1.98 christos 1260: if (fseeko(fp, (off_t)0, SEEK_SET) == (off_t)-1) {
1.85 christos 1261: ret = errno;
1262: goto out3;
1263: }
1264:
1265: if (fseeko(tp, (off_t)sizeof(buf) * count + (cp - buf), SEEK_SET) ==
1266: (off_t)-1) {
1267: ret = errno;
1268: goto out3;
1269: }
1270:
1271: for(;;) {
1.99 christos 1272: if ((left = (ssize_t)fread(buf, (size_t)1, sizeof(buf), tp)) == 0) {
1.85 christos 1273: if (ferror(fp))
1274: ret = errno;
1275: break;
1276: }
1.98 christos 1277: if (fwrite(buf, (size_t)left, (size_t)1, fp) != 1) {
1.85 christos 1278: ret = errno;
1279: break;
1280: }
1281: }
1282: fflush(fp);
1283: if((off = ftello(fp)) > 0)
1284: (void)ftruncate(fileno(fp), off);
1285: out3:
1286: fclose(tp);
1287: out2:
1288: unlink(template);
1289: out1:
1290: fclose(fp);
1291:
1292: return ret;
1293: }
1294:
1.11 lukem 1295:
1.1 christos 1296: /*
1297: * read history from a file given
1298: */
1299: int
1.11 lukem 1300: read_history(const char *filename)
1.1 christos 1301: {
1.92 christos 1302: HistEvent ev;
1.1 christos 1303:
1304: if (h == NULL || e == NULL)
1305: rl_initialize();
1.85 christos 1306: if (filename == NULL && (filename = _default_history_file()) == NULL)
1307: return errno;
1.96 christos 1308: return history(h, &ev, H_LOAD, filename) == -1 ?
1309: (errno ? errno : EINVAL) : 0;
1.1 christos 1310: }
1311:
1.11 lukem 1312:
1.1 christos 1313: /*
1314: * write history to a file given
1315: */
1316: int
1.11 lukem 1317: write_history(const char *filename)
1.1 christos 1318: {
1.92 christos 1319: HistEvent ev;
1.1 christos 1320:
1321: if (h == NULL || e == NULL)
1322: rl_initialize();
1.85 christos 1323: if (filename == NULL && (filename = _default_history_file()) == NULL)
1324: return errno;
1.96 christos 1325: return history(h, &ev, H_SAVE, filename) == -1 ?
1326: (errno ? errno : EINVAL) : 0;
1.1 christos 1327: }
1328:
1.11 lukem 1329:
1.1 christos 1330: /*
1331: * returns history ``num''th event
1332: *
1333: * returned pointer points to static variable
1334: */
1.2 christos 1335: HIST_ENTRY *
1.11 lukem 1336: history_get(int num)
1.1 christos 1337: {
1338: static HIST_ENTRY she;
1.92 christos 1339: HistEvent ev;
1.40 christos 1340: int curr_num;
1.1 christos 1341:
1342: if (h == NULL || e == NULL)
1343: rl_initialize();
1344:
1.40 christos 1345: /* save current position */
1.92 christos 1346: if (history(h, &ev, H_CURR) != 0)
1.96 christos 1347: return NULL;
1.1 christos 1348: curr_num = ev.num;
1.40 christos 1349:
1.85 christos 1350: /* start from the oldest */
1.92 christos 1351: if (history(h, &ev, H_LAST) != 0)
1.96 christos 1352: return NULL; /* error */
1.40 christos 1353:
1.85 christos 1354: /* look forwards for event matching specified offset */
1.92 christos 1355: if (history(h, &ev, H_NEXT_EVDATA, num, &she.data))
1.96 christos 1356: return NULL;
1.1 christos 1357:
1.92 christos 1358: she.line = ev.str;
1.1 christos 1359:
1.40 christos 1360: /* restore pointer to where it was */
1.92 christos 1361: (void)history(h, &ev, H_SET, curr_num);
1.1 christos 1362:
1.96 christos 1363: return &she;
1.1 christos 1364: }
1365:
1.11 lukem 1366:
1.1 christos 1367: /*
1368: * add the line to history table
1369: */
1370: int
1.11 lukem 1371: add_history(const char *line)
1.1 christos 1372: {
1.92 christos 1373: HistEvent ev;
1.1 christos 1374:
1.104 christos 1375: if (line == NULL)
1376: return 0;
1377:
1.1 christos 1378: if (h == NULL || e == NULL)
1379: rl_initialize();
1380:
1.92 christos 1381: (void)history(h, &ev, H_ENTER, line);
1382: if (history(h, &ev, H_GETSIZE) == 0)
1.1 christos 1383: history_length = ev.num;
1384:
1.96 christos 1385: return !(history_length > 0); /* return 0 if all is okay */
1.1 christos 1386: }
1387:
1.11 lukem 1388:
1.1 christos 1389: /*
1.58 christos 1390: * remove the specified entry from the history list and return it.
1391: */
1392: HIST_ENTRY *
1393: remove_history(int num)
1394: {
1.85 christos 1395: HIST_ENTRY *he;
1.92 christos 1396: HistEvent ev;
1.58 christos 1397:
1398: if (h == NULL || e == NULL)
1399: rl_initialize();
1400:
1.95 christos 1401: if ((he = el_malloc(sizeof(*he))) == NULL)
1.58 christos 1402: return NULL;
1403:
1.92 christos 1404: if (history(h, &ev, H_DELDATA, num, &he->data) != 0) {
1.95 christos 1405: el_free(he);
1.71 christos 1406: return NULL;
1.85 christos 1407: }
1.71 christos 1408:
1.92 christos 1409: he->line = ev.str;
1410: if (history(h, &ev, H_GETSIZE) == 0)
1.85 christos 1411: history_length = ev.num;
1.58 christos 1412:
1.85 christos 1413: return he;
1.58 christos 1414: }
1415:
1416:
1417: /*
1.85 christos 1418: * replace the line and data of the num-th entry
1419: */
1420: HIST_ENTRY *
1421: replace_history_entry(int num, const char *line, histdata_t data)
1422: {
1423: HIST_ENTRY *he;
1.92 christos 1424: HistEvent ev;
1.85 christos 1425: int curr_num;
1426:
1427: if (h == NULL || e == NULL)
1428: rl_initialize();
1429:
1430: /* save current position */
1.92 christos 1431: if (history(h, &ev, H_CURR) != 0)
1.85 christos 1432: return NULL;
1433: curr_num = ev.num;
1434:
1435: /* start from the oldest */
1.92 christos 1436: if (history(h, &ev, H_LAST) != 0)
1.85 christos 1437: return NULL; /* error */
1438:
1.95 christos 1439: if ((he = el_malloc(sizeof(*he))) == NULL)
1.85 christos 1440: return NULL;
1441:
1442: /* look forwards for event matching specified offset */
1.92 christos 1443: if (history(h, &ev, H_NEXT_EVDATA, num, &he->data))
1.85 christos 1444: goto out;
1445:
1.92 christos 1446: he->line = strdup(ev.str);
1.85 christos 1447: if (he->line == NULL)
1448: goto out;
1449:
1.92 christos 1450: if (history(h, &ev, H_REPLACE, line, data))
1.85 christos 1451: goto out;
1452:
1453: /* restore pointer to where it was */
1.92 christos 1454: if (history(h, &ev, H_SET, curr_num))
1.85 christos 1455: goto out;
1456:
1457: return he;
1458: out:
1.95 christos 1459: el_free(he);
1.85 christos 1460: return NULL;
1461: }
1462:
1463: /*
1.1 christos 1464: * clear the history list - delete all entries
1465: */
1466: void
1.11 lukem 1467: clear_history(void)
1.1 christos 1468: {
1.92 christos 1469: HistEvent ev;
1.11 lukem 1470:
1.92 christos 1471: (void)history(h, &ev, H_CLEAR);
1.85 christos 1472: history_length = 0;
1.1 christos 1473: }
1474:
1.11 lukem 1475:
1.1 christos 1476: /*
1477: * returns offset of the current history event
1478: */
1479: int
1.11 lukem 1480: where_history(void)
1.1 christos 1481: {
1.92 christos 1482: HistEvent ev;
1.1 christos 1483: int curr_num, off;
1484:
1.92 christos 1485: if (history(h, &ev, H_CURR) != 0)
1.96 christos 1486: return 0;
1.1 christos 1487: curr_num = ev.num;
1488:
1.92 christos 1489: (void)history(h, &ev, H_FIRST);
1.1 christos 1490: off = 1;
1.92 christos 1491: while (ev.num != curr_num && history(h, &ev, H_NEXT) == 0)
1.1 christos 1492: off++;
1493:
1.96 christos 1494: return off;
1.1 christos 1495: }
1496:
1.11 lukem 1497:
1.1 christos 1498: /*
1499: * returns current history event or NULL if there is no such event
1500: */
1.2 christos 1501: HIST_ENTRY *
1.11 lukem 1502: current_history(void)
1.1 christos 1503: {
1.11 lukem 1504:
1.96 christos 1505: return _move_history(H_CURR);
1.1 christos 1506: }
1507:
1.11 lukem 1508:
1.1 christos 1509: /*
1510: * returns total number of bytes history events' data are using
1511: */
1512: int
1.11 lukem 1513: history_total_bytes(void)
1.1 christos 1514: {
1.92 christos 1515: HistEvent ev;
1.80 christos 1516: int curr_num;
1517: size_t size;
1.1 christos 1518:
1.92 christos 1519: if (history(h, &ev, H_CURR) != 0)
1.96 christos 1520: return -1;
1.1 christos 1521: curr_num = ev.num;
1522:
1.92 christos 1523: (void)history(h, &ev, H_FIRST);
1.1 christos 1524: size = 0;
1525: do
1.92 christos 1526: size += strlen(ev.str) * sizeof(*ev.str);
1527: while (history(h, &ev, H_NEXT) == 0);
1.1 christos 1528:
1529: /* get to the same position as before */
1.92 christos 1530: history(h, &ev, H_PREV_EVENT, curr_num);
1.1 christos 1531:
1.96 christos 1532: return (int)size;
1.1 christos 1533: }
1534:
1.11 lukem 1535:
1.1 christos 1536: /*
1537: * sets the position in the history list to ``pos''
1538: */
1539: int
1.11 lukem 1540: history_set_pos(int pos)
1.1 christos 1541: {
1.92 christos 1542: HistEvent ev;
1.40 christos 1543: int curr_num;
1.1 christos 1544:
1.85 christos 1545: if (pos >= history_length || pos < 0)
1.96 christos 1546: return -1;
1.1 christos 1547:
1.92 christos 1548: (void)history(h, &ev, H_CURR);
1.1 christos 1549: curr_num = ev.num;
1550:
1.85 christos 1551: /*
1552: * use H_DELDATA to set to nth history (without delete) by passing
1553: * (void **)-1
1554: */
1.92 christos 1555: if (history(h, &ev, H_DELDATA, pos, (void **)-1)) {
1556: (void)history(h, &ev, H_SET, curr_num);
1.96 christos 1557: return -1;
1.1 christos 1558: }
1.96 christos 1559: return 0;
1.1 christos 1560: }
1561:
1.11 lukem 1562:
1.1 christos 1563: /*
1564: * returns previous event in history and shifts pointer accordingly
1565: */
1.2 christos 1566: HIST_ENTRY *
1.11 lukem 1567: previous_history(void)
1.1 christos 1568: {
1.11 lukem 1569:
1.96 christos 1570: return _move_history(H_PREV);
1.1 christos 1571: }
1572:
1.11 lukem 1573:
1.1 christos 1574: /*
1575: * returns next event in history and shifts pointer accordingly
1576: */
1.2 christos 1577: HIST_ENTRY *
1.11 lukem 1578: next_history(void)
1.1 christos 1579: {
1.11 lukem 1580:
1.96 christos 1581: return _move_history(H_NEXT);
1.1 christos 1582: }
1583:
1.11 lukem 1584:
1.1 christos 1585: /*
1.40 christos 1586: * searches for first history event containing the str
1.1 christos 1587: */
1.40 christos 1588: int
1589: history_search(const char *str, int direction)
1.11 lukem 1590: {
1.92 christos 1591: HistEvent ev;
1592: const char *strp;
1.11 lukem 1593: int curr_num;
1.1 christos 1594:
1.92 christos 1595: if (history(h, &ev, H_CURR) != 0)
1.96 christos 1596: return -1;
1.1 christos 1597: curr_num = ev.num;
1598:
1599: for (;;) {
1.92 christos 1600: if ((strp = strstr(ev.str, str)) != NULL)
1.96 christos 1601: return (int)(strp - ev.str);
1.92 christos 1602: if (history(h, &ev, direction < 0 ? H_NEXT:H_PREV) != 0)
1.1 christos 1603: break;
1604: }
1.92 christos 1605: (void)history(h, &ev, H_SET, curr_num);
1.96 christos 1606: return -1;
1.1 christos 1607: }
1608:
1.11 lukem 1609:
1.1 christos 1610: /*
1611: * searches for first history event beginning with str
1612: */
1613: int
1.11 lukem 1614: history_search_prefix(const char *str, int direction)
1.1 christos 1615: {
1.92 christos 1616: HistEvent ev;
1.11 lukem 1617:
1.92 christos 1618: return (history(h, &ev, direction < 0 ?
1.88 christos 1619: H_PREV_STR : H_NEXT_STR, str));
1.1 christos 1620: }
1621:
1.11 lukem 1622:
1.1 christos 1623: /*
1624: * search for event in history containing str, starting at offset
1625: * abs(pos); continue backward, if pos<0, forward otherwise
1626: */
1.5 christos 1627: /* ARGSUSED */
1.1 christos 1628: int
1.40 christos 1629: history_search_pos(const char *str,
1.30 christos 1630: int direction __attribute__((__unused__)), int pos)
1.1 christos 1631: {
1.92 christos 1632: HistEvent ev;
1.11 lukem 1633: int curr_num, off;
1.1 christos 1634:
1635: off = (pos > 0) ? pos : -pos;
1636: pos = (pos > 0) ? 1 : -1;
1637:
1.92 christos 1638: if (history(h, &ev, H_CURR) != 0)
1.96 christos 1639: return -1;
1.1 christos 1640: curr_num = ev.num;
1641:
1.92 christos 1642: if (history_set_pos(off) != 0 || history(h, &ev, H_CURR) != 0)
1.96 christos 1643: return -1;
1.1 christos 1644:
1645: for (;;) {
1.92 christos 1646: if (strstr(ev.str, str))
1.96 christos 1647: return off;
1.92 christos 1648: if (history(h, &ev, (pos < 0) ? H_PREV : H_NEXT) != 0)
1.1 christos 1649: break;
1650: }
1651:
1652: /* set "current" pointer back to previous state */
1.92 christos 1653: (void)history(h, &ev,
1.88 christos 1654: pos < 0 ? H_NEXT_EVENT : H_PREV_EVENT, curr_num);
1.1 christos 1655:
1.96 christos 1656: return -1;
1.1 christos 1657: }
1658:
1659:
1660: /********************************/
1.40 christos 1661: /* completion functions */
1.1 christos 1662:
1.57 christos 1663: char *
1664: tilde_expand(char *name)
1665: {
1666: return fn_tilde_expand(name);
1667: }
1668:
1669: char *
1670: filename_completion_function(const char *name, int state)
1671: {
1672: return fn_filename_completion_function(name, state);
1673: }
1674:
1.1 christos 1675: /*
1676: * a completion generator for usernames; returns _first_ username
1677: * which starts with supplied text
1678: * text contains a partial username preceded by random character
1.94 christos 1679: * (usually '~'); state resets search from start (??? should we do that anyway)
1.1 christos 1680: * it's callers responsibility to free returned value
1681: */
1.11 lukem 1682: char *
1683: username_completion_function(const char *text, int state)
1.1 christos 1684: {
1.94 christos 1685: #if defined(HAVE_GETPW_R_POSIX) || defined(HAVE_GETPW_R_DRAFT)
1686: struct passwd pwres;
1.50 christos 1687: char pwbuf[1024];
1.94 christos 1688: #endif
1689: struct passwd *pass = NULL;
1.1 christos 1690:
1691: if (text[0] == '\0')
1.96 christos 1692: return NULL;
1.1 christos 1693:
1694: if (*text == '~')
1695: text++;
1696:
1697: if (state == 0)
1698: setpwent();
1699:
1.94 christos 1700: while (
1701: #if defined(HAVE_GETPW_R_POSIX) || defined(HAVE_GETPW_R_DRAFT)
1702: getpwent_r(&pwres, pwbuf, sizeof(pwbuf), &pass) == 0 && pass != NULL
1703: #else
1704: (pass = getpwent()) != NULL
1705: #endif
1706: && text[0] == pass->pw_name[0]
1707: && strcmp(text, pass->pw_name) == 0)
1708: continue;
1.1 christos 1709:
1.94 christos 1710: if (pass == NULL) {
1.1 christos 1711: endpwent();
1.85 christos 1712: return NULL;
1.1 christos 1713: }
1.94 christos 1714: return strdup(pass->pw_name);
1.1 christos 1715: }
1716:
1.11 lukem 1717:
1.1 christos 1718: /*
1.46 christos 1719: * el-compatible wrapper to send TSTP on ^Z
1720: */
1721: /* ARGSUSED */
1722: static unsigned char
1723: _el_rl_tstp(EditLine *el __attribute__((__unused__)), int ch __attribute__((__unused__)))
1724: {
1725: (void)kill(0, SIGTSTP);
1726: return CC_NORM;
1727: }
1.11 lukem 1728:
1.1 christos 1729: /*
1.12 jdolecek 1730: * Display list of strings in columnar format on readline's output stream.
1731: * 'matches' is list of strings, 'len' is number of strings in 'matches',
1732: * 'max' is maximum length of string in 'matches'.
1733: */
1734: void
1.53 dsl 1735: rl_display_match_list(char **matches, int len, int max)
1.12 jdolecek 1736: {
1737:
1.81 christos 1738: fn_display_match_list(e, matches, (size_t)len, (size_t)max);
1.1 christos 1739: }
1740:
1.56 christos 1741: static const char *
1742: /*ARGSUSED*/
1743: _rl_completion_append_character_function(const char *dummy
1744: __attribute__((__unused__)))
1745: {
1746: static char buf[2];
1.99 christos 1747: buf[0] = (char)rl_completion_append_character;
1.76 christos 1748: buf[1] = '\0';
1.56 christos 1749: return buf;
1750: }
1751:
1.11 lukem 1752:
1.1 christos 1753: /*
1754: * complete word at current point
1755: */
1.53 dsl 1756: /* ARGSUSED */
1.1 christos 1757: int
1.53 dsl 1758: rl_complete(int ignore __attribute__((__unused__)), int invoking_key)
1.1 christos 1759: {
1.86 christos 1760: #ifdef WIDECHAR
1761: static ct_buffer_t wbreak_conv, sprefix_conv;
1762: #endif
1.102 christos 1763: char *breakchars;
1.86 christos 1764:
1.1 christos 1765: if (h == NULL || e == NULL)
1766: rl_initialize();
1767:
1768: if (rl_inhibit_completion) {
1.47 christos 1769: char arr[2];
1770: arr[0] = (char)invoking_key;
1771: arr[1] = '\0';
1772: el_insertstr(e, arr);
1.96 christos 1773: return CC_REFRESH;
1.53 dsl 1774: }
1775:
1.102 christos 1776: if (rl_completion_word_break_hook != NULL)
1777: breakchars = (*rl_completion_word_break_hook)();
1778: else
1779: breakchars = rl_basic_word_break_characters;
1780:
1.53 dsl 1781: /* Just look at how many global variables modify this operation! */
1782: return fn_complete(e,
1783: (CPFunction *)rl_completion_entry_function,
1784: rl_attempted_completion_function,
1.86 christos 1785: ct_decode_string(rl_basic_word_break_characters, &wbreak_conv),
1.102 christos 1786: ct_decode_string(breakchars, &sprefix_conv),
1.81 christos 1787: _rl_completion_append_character_function,
1788: (size_t)rl_completion_query_items,
1.53 dsl 1789: &rl_completion_type, &rl_attempted_completion_over,
1790: &rl_point, &rl_end);
1.92 christos 1791:
1792:
1.1 christos 1793: }
1794:
1.11 lukem 1795:
1.53 dsl 1796: /* ARGSUSED */
1797: static unsigned char
1798: _el_rl_complete(EditLine *el __attribute__((__unused__)), int ch)
1799: {
1800: return (unsigned char)rl_complete(0, ch);
1801: }
1802:
1.1 christos 1803: /*
1.7 simonb 1804: * misc other functions
1.1 christos 1805: */
1806:
1807: /*
1808: * bind key c to readline-type function func
1809: */
1810: int
1.85 christos 1811: rl_bind_key(int c, rl_command_func_t *func)
1.1 christos 1812: {
1.11 lukem 1813: int retval = -1;
1.1 christos 1814:
1815: if (h == NULL || e == NULL)
1816: rl_initialize();
1817:
1818: if (func == rl_insert) {
1819: /* XXX notice there is no range checking of ``c'' */
1820: e->el_map.key[c] = ED_INSERT;
1821: retval = 0;
1822: }
1.96 christos 1823: return retval;
1.1 christos 1824: }
1825:
1.11 lukem 1826:
1.1 christos 1827: /*
1828: * read one key from input - handles chars pushed back
1829: * to input stream also
1830: */
1831: int
1.11 lukem 1832: rl_read_key(void)
1.1 christos 1833: {
1.11 lukem 1834: char fooarr[2 * sizeof(int)];
1.1 christos 1835:
1836: if (e == NULL || h == NULL)
1837: rl_initialize();
1838:
1.96 christos 1839: return el_getc(e, fooarr);
1.1 christos 1840: }
1841:
1.11 lukem 1842:
1.1 christos 1843: /*
1844: * reset the terminal
1845: */
1.5 christos 1846: /* ARGSUSED */
1.1 christos 1847: void
1.30 christos 1848: rl_reset_terminal(const char *p __attribute__((__unused__)))
1.1 christos 1849: {
1.11 lukem 1850:
1.1 christos 1851: if (h == NULL || e == NULL)
1852: rl_initialize();
1853: el_reset(e);
1854: }
1855:
1.11 lukem 1856:
1.1 christos 1857: /*
1858: * insert character ``c'' back into input stream, ``count'' times
1859: */
1860: int
1.11 lukem 1861: rl_insert(int count, int c)
1.1 christos 1862: {
1.11 lukem 1863: char arr[2];
1.1 christos 1864:
1865: if (h == NULL || e == NULL)
1866: rl_initialize();
1867:
1868: /* XXX - int -> char conversion can lose on multichars */
1.99 christos 1869: arr[0] = (char)c;
1.1 christos 1870: arr[1] = '\0';
1871:
1872: for (; count > 0; count--)
1873: el_push(e, arr);
1874:
1.96 christos 1875: return 0;
1.35 christos 1876: }
1877:
1.85 christos 1878: int
1879: rl_insert_text(const char *text)
1880: {
1881: if (!text || *text == 0)
1.96 christos 1882: return 0;
1.85 christos 1883:
1884: if (h == NULL || e == NULL)
1885: rl_initialize();
1886:
1887: if (el_insertstr(e, text) < 0)
1.96 christos 1888: return 0;
1.85 christos 1889: return (int)strlen(text);
1890: }
1891:
1.35 christos 1892: /*ARGSUSED*/
1893: int
1.97 christos 1894: rl_newline(int count __attribute__((__unused__)),
1895: int c __attribute__((__unused__)))
1.35 christos 1896: {
1897: /*
1898: * Readline-4.0 appears to ignore the args.
1899: */
1900: return rl_insert(1, '\n');
1901: }
1902:
1903: /*ARGSUSED*/
1904: static unsigned char
1.97 christos 1905: rl_bind_wrapper(EditLine *el __attribute__((__unused__)), unsigned char c)
1.35 christos 1906: {
1907: if (map[c] == NULL)
1908: return CC_ERROR;
1.49 christos 1909:
1910: _rl_update_pos();
1911:
1.35 christos 1912: (*map[c])(NULL, c);
1.38 christos 1913:
1914: /* If rl_done was set by the above call, deal with it here */
1915: if (rl_done)
1916: return CC_EOF;
1917:
1.35 christos 1918: return CC_NORM;
1919: }
1920:
1921: int
1922: rl_add_defun(const char *name, Function *fun, int c)
1923: {
1924: char dest[8];
1.77 lukem 1925: if ((size_t)c >= sizeof(map) / sizeof(map[0]) || c < 0)
1.35 christos 1926: return -1;
1927: map[(unsigned char)c] = fun;
1928: el_set(e, EL_ADDFN, name, name, rl_bind_wrapper);
1.37 christos 1929: vis(dest, c, VIS_WHITE|VIS_NOSLASH, 0);
1.106 ! christos 1930: el_set(e, EL_BIND, dest, name, NULL);
1.35 christos 1931: return 0;
1932: }
1933:
1934: void
1.101 matt 1935: rl_callback_read_char(void)
1.35 christos 1936: {
1.36 christos 1937: int count = 0, done = 0;
1.35 christos 1938: const char *buf = el_gets(e, &count);
1939: char *wbuf;
1940:
1941: if (buf == NULL || count-- <= 0)
1942: return;
1.61 christos 1943: if (count == 0 && buf[0] == e->el_tty.t_c[TS_IO][C_EOF])
1.36 christos 1944: done = 1;
1945: if (buf[count] == '\n' || buf[count] == '\r')
1946: done = 2;
1947:
1948: if (done && rl_linefunc != NULL) {
1.35 christos 1949: el_set(e, EL_UNBUFFERED, 0);
1.36 christos 1950: if (done == 2) {
1951: if ((wbuf = strdup(buf)) != NULL)
1952: wbuf[count] = '\0';
1953: } else
1954: wbuf = NULL;
1.35 christos 1955: (*(void (*)(const char *))rl_linefunc)(wbuf);
1.85 christos 1956: //el_set(e, EL_UNBUFFERED, 1);
1.35 christos 1957: }
1958: }
1959:
1960: void
1.72 christos 1961: rl_callback_handler_install(const char *prompt, VCPFunction *linefunc)
1.35 christos 1962: {
1963: if (e == NULL) {
1964: rl_initialize();
1965: }
1.78 christos 1966: (void)rl_set_prompt(prompt);
1.35 christos 1967: rl_linefunc = linefunc;
1968: el_set(e, EL_UNBUFFERED, 1);
1969: }
1970:
1971: void
1972: rl_callback_handler_remove(void)
1973: {
1974: el_set(e, EL_UNBUFFERED, 0);
1.72 christos 1975: rl_linefunc = NULL;
1.35 christos 1976: }
1977:
1978: void
1979: rl_redisplay(void)
1980: {
1981: char a[2];
1.99 christos 1982: a[0] = (char)e->el_tty.t_c[TS_IO][C_REPRINT];
1.35 christos 1983: a[1] = '\0';
1984: el_push(e, a);
1985: }
1986:
1987: int
1988: rl_get_previous_history(int count, int key)
1989: {
1990: char a[2];
1.99 christos 1991: a[0] = (char)key;
1.35 christos 1992: a[1] = '\0';
1993: while (count--)
1994: el_push(e, a);
1995: return 0;
1.38 christos 1996: }
1997:
1998: void
1999: /*ARGSUSED*/
1.97 christos 2000: rl_prep_terminal(int meta_flag __attribute__((__unused__)))
1.38 christos 2001: {
2002: el_set(e, EL_PREP_TERM, 1);
2003: }
2004:
2005: void
1.68 christos 2006: rl_deprep_terminal(void)
1.38 christos 2007: {
2008: el_set(e, EL_PREP_TERM, 0);
2009: }
2010:
2011: int
2012: rl_read_init_file(const char *s)
2013: {
1.96 christos 2014: return el_source(e, s);
1.38 christos 2015: }
2016:
2017: int
2018: rl_parse_and_bind(const char *line)
2019: {
2020: const char **argv;
2021: int argc;
2022: Tokenizer *tok;
2023:
2024: tok = tok_init(NULL);
1.44 lukem 2025: tok_str(tok, line, &argc, &argv);
1.38 christos 2026: argc = el_parse(e, argc, argv);
2027: tok_end(tok);
1.96 christos 2028: return argc ? 1 : 0;
1.38 christos 2029: }
2030:
1.51 christos 2031: int
2032: rl_variable_bind(const char *var, const char *value)
2033: {
2034: /*
2035: * The proper return value is undocument, but this is what the
2036: * readline source seems to do.
2037: */
1.106 ! christos 2038: return el_set(e, EL_BIND, "", var, value, NULL) == -1 ? 1 : 0;
1.51 christos 2039: }
2040:
1.38 christos 2041: void
2042: rl_stuff_char(int c)
2043: {
2044: char buf[2];
2045:
1.99 christos 2046: buf[0] = (char)c;
1.38 christos 2047: buf[1] = '\0';
2048: el_insertstr(e, buf);
2049: }
2050:
2051: static int
2052: _rl_event_read_char(EditLine *el, char *cp)
2053: {
1.80 christos 2054: int n;
2055: ssize_t num_read = 0;
1.38 christos 2056:
1.76 christos 2057: *cp = '\0';
1.38 christos 2058: while (rl_event_hook) {
2059:
2060: (*rl_event_hook)();
2061:
2062: #if defined(FIONREAD)
2063: if (ioctl(el->el_infd, FIONREAD, &n) < 0)
1.96 christos 2064: return -1;
1.38 christos 2065: if (n)
1.98 christos 2066: num_read = read(el->el_infd, cp, (size_t)1);
1.38 christos 2067: else
2068: num_read = 0;
2069: #elif defined(F_SETFL) && defined(O_NDELAY)
2070: if ((n = fcntl(el->el_infd, F_GETFL, 0)) < 0)
1.96 christos 2071: return -1;
1.38 christos 2072: if (fcntl(el->el_infd, F_SETFL, n|O_NDELAY) < 0)
1.96 christos 2073: return -1;
1.38 christos 2074: num_read = read(el->el_infd, cp, 1);
2075: if (fcntl(el->el_infd, F_SETFL, n))
1.96 christos 2076: return -1;
1.38 christos 2077: #else
2078: /* not non-blocking, but what you gonna do? */
2079: num_read = read(el->el_infd, cp, 1);
1.96 christos 2080: return -1;
1.38 christos 2081: #endif
2082:
2083: if (num_read < 0 && errno == EAGAIN)
2084: continue;
2085: if (num_read == 0)
2086: continue;
2087: break;
2088: }
2089: if (!rl_event_hook)
2090: el_set(el, EL_GETCFN, EL_BUILTIN_GETCFN);
1.80 christos 2091: return (int)num_read;
1.1 christos 2092: }
1.49 christos 2093:
2094: static void
2095: _rl_update_pos(void)
2096: {
2097: const LineInfo *li = el_line(e);
2098:
1.80 christos 2099: rl_point = (int)(li->cursor - li->buffer);
2100: rl_end = (int)(li->lastchar - li->buffer);
1.49 christos 2101: }
1.70 christos 2102:
2103: void
2104: rl_get_screen_size(int *rows, int *cols)
2105: {
2106: if (rows)
1.106 ! christos 2107: el_get(e, EL_GETTC, "li", rows, NULL);
1.70 christos 2108: if (cols)
1.106 ! christos 2109: el_get(e, EL_GETTC, "co", cols, NULL);
1.70 christos 2110: }
2111:
2112: void
2113: rl_set_screen_size(int rows, int cols)
2114: {
2115: char buf[64];
2116: (void)snprintf(buf, sizeof(buf), "%d", rows);
1.106 ! christos 2117: el_set(e, EL_SETTC, "li", buf, NULL);
1.70 christos 2118: (void)snprintf(buf, sizeof(buf), "%d", cols);
1.106 ! christos 2119: el_set(e, EL_SETTC, "co", buf, NULL);
1.70 christos 2120: }
2121:
1.71 christos 2122: char **
2123: rl_completion_matches(const char *str, rl_compentry_func_t *fun)
2124: {
2125: size_t len, max, i, j, min;
2126: char **list, *match, *a, *b;
2127:
2128: len = 1;
2129: max = 10;
1.95 christos 2130: if ((list = el_malloc(max * sizeof(*list))) == NULL)
1.71 christos 2131: return NULL;
2132:
2133: while ((match = (*fun)(str, (int)(len - 1))) != NULL) {
1.83 christos 2134: list[len++] = match;
1.71 christos 2135: if (len == max) {
2136: char **nl;
2137: max += 10;
1.95 christos 2138: if ((nl = el_realloc(list, max * sizeof(*nl))) == NULL)
1.71 christos 2139: goto out;
2140: list = nl;
2141: }
2142: }
2143: if (len == 1)
2144: goto out;
2145: list[len] = NULL;
2146: if (len == 2) {
2147: if ((list[0] = strdup(list[1])) == NULL)
2148: goto out;
2149: return list;
2150: }
2151: qsort(&list[1], len - 1, sizeof(*list),
2152: (int (*)(const void *, const void *)) strcmp);
2153: min = SIZE_T_MAX;
2154: for (i = 1, a = list[i]; i < len - 1; i++, a = b) {
2155: b = list[i + 1];
2156: for (j = 0; a[j] && a[j] == b[j]; j++)
2157: continue;
2158: if (min > j)
2159: min = j;
2160: }
2161: if (min == 0 && *str) {
2162: if ((list[0] = strdup(str)) == NULL)
2163: goto out;
2164: } else {
1.95 christos 2165: if ((list[0] = el_malloc((min + 1) * sizeof(*list[0]))) == NULL)
1.71 christos 2166: goto out;
2167: (void)memcpy(list[0], list[1], min);
2168: list[0][min] = '\0';
2169: }
2170: return list;
2171:
2172: out:
1.95 christos 2173: el_free(list);
1.71 christos 2174: return NULL;
2175: }
2176:
1.70 christos 2177: char *
2178: rl_filename_completion_function (const char *text, int state)
2179: {
2180: return fn_filename_completion_function(text, state);
2181: }
2182:
1.73 christos 2183: void
2184: rl_forced_update_display(void)
2185: {
1.74 christos 2186: el_set(e, EL_REFRESH);
1.73 christos 2187: }
2188:
1.70 christos 2189: int
2190: _rl_abort_internal(void)
2191: {
2192: el_beep(e);
2193: longjmp(topbuf, 1);
2194: /*NOTREACHED*/
2195: }
2196:
2197: int
2198: _rl_qsort_string_compare(char **s1, char **s2)
2199: {
2200: return strcoll(*s1, *s2);
2201: }
2202:
1.85 christos 2203: HISTORY_STATE *
2204: history_get_history_state(void)
2205: {
2206: HISTORY_STATE *hs;
2207:
1.95 christos 2208: if ((hs = el_malloc(sizeof(*hs))) == NULL)
1.96 christos 2209: return NULL;
1.85 christos 2210: hs->length = history_length;
1.96 christos 2211: return hs;
1.85 christos 2212: }
2213:
1.70 christos 2214: int
2215: /*ARGSUSED*/
1.97 christos 2216: rl_kill_text(int from __attribute__((__unused__)),
2217: int to __attribute__((__unused__)))
1.70 christos 2218: {
2219: return 0;
2220: }
2221:
2222: Keymap
2223: rl_make_bare_keymap(void)
2224: {
2225: return NULL;
2226: }
2227:
2228: Keymap
2229: rl_get_keymap(void)
2230: {
2231: return NULL;
2232: }
2233:
2234: void
2235: /*ARGSUSED*/
1.97 christos 2236: rl_set_keymap(Keymap k __attribute__((__unused__)))
1.70 christos 2237: {
2238: }
2239:
2240: int
2241: /*ARGSUSED*/
1.97 christos 2242: rl_generic_bind(int type __attribute__((__unused__)),
2243: const char * keyseq __attribute__((__unused__)),
2244: const char * data __attribute__((__unused__)),
2245: Keymap k __attribute__((__unused__)))
1.70 christos 2246: {
2247: return 0;
2248: }
2249:
2250: int
2251: /*ARGSUSED*/
1.97 christos 2252: rl_bind_key_in_map(int key __attribute__((__unused__)),
2253: rl_command_func_t *fun __attribute__((__unused__)),
2254: Keymap k __attribute__((__unused__)))
1.70 christos 2255: {
2256: return 0;
2257: }
1.85 christos 2258:
2259: /* unsupported, but needed by python */
2260: void
2261: rl_cleanup_after_signal(void)
2262: {
2263: }
1.90 christos 2264:
2265: int
2266: rl_on_new_line(void)
2267: {
2268: return 0;
2269: }
1.105 christos 2270:
2271: void
2272: rl_free_line_state(void)
2273: {
2274: }
CVSweb <webmaster@jp.NetBSD.org>