Annotation of src/lib/libedit/readline.c, Revision 1.146.2.1
1.146.2.1! pgoyette 1: /* $NetBSD: readline.c,v 1.147 2018/06/09 17:41:55 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)
1.146.2.1! pgoyette 34: __RCSID("$NetBSD: readline.c,v 1.147 2018/06/09 17:41:55 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;
1.146.2.1! pgoyette 83: rl_hook_func_t *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;
1.142 christos 125: int rl_did_startup_hook = 0;
1.34 christos 126: VFunction *rl_completion_display_matches_hook = NULL;
1.68 christos 127: VFunction *rl_prep_term_function = (VFunction *)rl_prep_terminal;
128: VFunction *rl_deprep_term_function = (VFunction *)rl_deprep_terminal;
1.85 christos 129: KEYMAP_ENTRY_ARRAY emacs_meta_keymap;
1.1 christos 130:
1.12 jdolecek 131: /*
1.32 christos 132: * The current prompt string.
133: */
134: char *rl_prompt = NULL;
135: /*
1.12 jdolecek 136: * This is set to character indicating type of completion being done by
137: * rl_complete_internal(); this is available for application completion
138: * functions.
139: */
140: int rl_completion_type = 0;
141:
142: /*
143: * If more than this number of items results from query for possible
144: * completions, we ask user if they are sure to really display the list.
145: */
146: int rl_completion_query_items = 100;
147:
148: /*
1.15 jdolecek 149: * List of characters which are word break characters, but should be left
150: * in the parsed text when it is passed to the completion function.
151: * Shell uses this to help determine what kind of completing to do.
1.12 jdolecek 152: */
1.53 dsl 153: char *rl_special_prefixes = NULL;
1.15 jdolecek 154:
155: /*
156: * This is the character appended to the completed words if at the end of
157: * the line. Default is ' ' (a space).
158: */
159: int rl_completion_append_character = ' ';
160:
161: /* stuff below is used internally by libedit for readline emulation */
162:
1.92 christos 163: static History *h = NULL;
1.1 christos 164: static EditLine *e = NULL;
1.116 christos 165: static rl_command_func_t *map[256];
1.70 christos 166: static jmp_buf topbuf;
1.1 christos 167:
168: /* internal functions */
1.11 lukem 169: static unsigned char _el_rl_complete(EditLine *, int);
1.46 christos 170: static unsigned char _el_rl_tstp(EditLine *, int);
1.11 lukem 171: static char *_get_prompt(EditLine *);
1.126 christos 172: static int _getc_function(EditLine *, wchar_t *);
1.40 christos 173: static int _history_expand_command(const char *, size_t, size_t,
174: char **);
1.11 lukem 175: static char *_rl_compat_sub(const char *, const char *,
1.40 christos 176: const char *, int);
1.126 christos 177: static int _rl_event_read_char(EditLine *, wchar_t *);
1.49 christos 178: static void _rl_update_pos(void);
1.1 christos 179:
1.137 christos 180: static HIST_ENTRY rl_he;
1.5 christos 181:
182: /* ARGSUSED */
1.1 christos 183: static char *
1.30 christos 184: _get_prompt(EditLine *el __attribute__((__unused__)))
1.1 christos 185: {
1.32 christos 186: rl_already_prompted = 1;
1.96 christos 187: return rl_prompt;
1.1 christos 188: }
189:
1.11 lukem 190:
1.1 christos 191: /*
1.59 christos 192: * read one key from user defined input function
193: */
194: static int
1.61 christos 195: /*ARGSUSED*/
1.126 christos 196: _getc_function(EditLine *el __attribute__((__unused__)), wchar_t *c)
1.59 christos 197: {
198: int i;
199:
1.139 christos 200: i = (*rl_getc_function)(rl_instream);
1.59 christos 201: if (i == -1)
202: return 0;
1.126 christos 203: *c = (wchar_t)i;
1.59 christos 204: return 1;
205: }
206:
1.91 christos 207: static void
208: _resize_fun(EditLine *el, void *a)
209: {
210: const LineInfo *li;
211: char **ap = a;
212:
213: li = el_line(el);
214: /* a cheesy way to get rid of const cast. */
1.98 christos 215: *ap = memchr(li->buffer, *li->buffer, (size_t)1);
1.91 christos 216: }
217:
1.85 christos 218: static const char *
219: _default_history_file(void)
220: {
221: struct passwd *p;
1.109 christos 222: static char *path;
223: size_t len;
1.85 christos 224:
1.109 christos 225: if (path)
1.85 christos 226: return path;
1.109 christos 227:
1.85 christos 228: if ((p = getpwuid(getuid())) == NULL)
229: return NULL;
1.109 christos 230:
231: len = strlen(p->pw_dir) + sizeof("/.history");
232: if ((path = malloc(len)) == NULL)
233: return NULL;
234:
235: (void)snprintf(path, len, "%s/.history", p->pw_dir);
1.85 christos 236: return path;
237: }
1.59 christos 238:
239: /*
1.7 simonb 240: * READLINE compatibility stuff
1.1 christos 241: */
242:
243: /*
1.78 christos 244: * Set the prompt
245: */
246: int
247: rl_set_prompt(const char *prompt)
248: {
1.82 christos 249: char *p;
250:
1.78 christos 251: if (!prompt)
252: prompt = "";
1.125 christos 253: if (rl_prompt != NULL && strcmp(rl_prompt, prompt) == 0)
1.78 christos 254: return 0;
255: if (rl_prompt)
1.95 christos 256: el_free(rl_prompt);
1.78 christos 257: rl_prompt = strdup(prompt);
1.82 christos 258: if (rl_prompt == NULL)
259: return -1;
260:
261: while ((p = strchr(rl_prompt, RL_PROMPT_END_IGNORE)) != NULL)
262: *p = RL_PROMPT_START_IGNORE;
263:
264: return 0;
1.78 christos 265: }
266:
267: /*
1.1 christos 268: * initialize rl compat stuff
269: */
270: int
1.11 lukem 271: rl_initialize(void)
1.1 christos 272: {
1.92 christos 273: HistEvent ev;
1.18 christos 274: int editmode = 1;
275: struct termios t;
1.1 christos 276:
277: if (e != NULL)
278: el_end(e);
279: if (h != NULL)
1.92 christos 280: history_end(h);
1.1 christos 281:
282: if (!rl_instream)
283: rl_instream = stdin;
284: if (!rl_outstream)
285: rl_outstream = stdout;
1.18 christos 286:
287: /*
288: * See if we don't really want to run the editor
289: */
290: if (tcgetattr(fileno(rl_instream), &t) != -1 && (t.c_lflag & ECHO) == 0)
291: editmode = 0;
292:
1.143 christos 293: e = el_init_internal(rl_readline_name, rl_instream, rl_outstream,
294: stderr, fileno(rl_instream), fileno(rl_outstream), fileno(stderr),
295: NO_RESET);
1.18 christos 296:
297: if (!editmode)
1.92 christos 298: el_set(e, EL_EDITMODE, 0);
1.1 christos 299:
1.92 christos 300: h = history_init();
1.1 christos 301: if (!e || !h)
1.96 christos 302: return -1;
1.1 christos 303:
1.92 christos 304: history(h, &ev, H_SETSIZE, INT_MAX); /* unlimited */
1.1 christos 305: history_length = 0;
306: max_input_history = INT_MAX;
307: el_set(e, EL_HIST, history, h);
308:
1.91 christos 309: /* Setup resize function */
310: el_set(e, EL_RESIZE, _resize_fun, &rl_line_buffer);
311:
1.59 christos 312: /* setup getc function if valid */
313: if (rl_getc_function)
314: el_set(e, EL_GETCFN, _getc_function);
315:
1.1 christos 316: /* for proper prompt printing in readline() */
1.78 christos 317: if (rl_set_prompt("") == -1) {
1.92 christos 318: history_end(h);
1.23 christos 319: el_end(e);
320: return -1;
321: }
1.82 christos 322: el_set(e, EL_PROMPT, _get_prompt, RL_PROMPT_START_IGNORE);
1.39 christos 323: el_set(e, EL_SIGNAL, rl_catch_signals);
1.1 christos 324:
325: /* set default mode to "emacs"-style and read setting afterwards */
1.112 christos 326: /* so this can be overridden */
1.1 christos 327: el_set(e, EL_EDITOR, "emacs");
1.32 christos 328: if (rl_terminal_name != NULL)
329: el_set(e, EL_TERMINAL, rl_terminal_name);
330: else
331: el_get(e, EL_TERMINAL, &rl_terminal_name);
1.1 christos 332:
1.12 jdolecek 333: /*
1.35 christos 334: * Word completion - this has to go AFTER rebinding keys
1.12 jdolecek 335: * to emacs-style.
336: */
1.1 christos 337: el_set(e, EL_ADDFN, "rl_complete",
1.35 christos 338: "ReadLine compatible completion function",
1.11 lukem 339: _el_rl_complete);
1.1 christos 340: el_set(e, EL_BIND, "^I", "rl_complete", NULL);
1.46 christos 341:
342: /*
343: * Send TSTP when ^Z is pressed.
344: */
345: el_set(e, EL_ADDFN, "rl_tstp",
346: "ReadLine compatible suspend function",
347: _el_rl_tstp);
348: el_set(e, EL_BIND, "^Z", "rl_tstp", NULL);
1.125 christos 349:
1.114 christos 350: /*
351: * Set some readline compatible key-bindings.
352: */
353: el_set(e, EL_BIND, "^R", "em-inc-search-prev", NULL);
354:
355: /*
356: * Allow the use of Home/End keys.
357: */
358: el_set(e, EL_BIND, "\\e[1~", "ed-move-to-beg", NULL);
359: el_set(e, EL_BIND, "\\e[4~", "ed-move-to-end", NULL);
360: el_set(e, EL_BIND, "\\e[7~", "ed-move-to-beg", NULL);
361: el_set(e, EL_BIND, "\\e[8~", "ed-move-to-end", NULL);
362: el_set(e, EL_BIND, "\\e[H", "ed-move-to-beg", NULL);
363: el_set(e, EL_BIND, "\\e[F", "ed-move-to-end", NULL);
364:
365: /*
366: * Allow the use of the Delete/Insert keys.
367: */
368: el_set(e, EL_BIND, "\\e[3~", "ed-delete-next-char", NULL);
369: el_set(e, EL_BIND, "\\e[2~", "ed-quoted-insert", NULL);
370:
371: /*
372: * Ctrl-left-arrow and Ctrl-right-arrow for word moving.
373: */
374: el_set(e, EL_BIND, "\\e[1;5C", "em-next-word", NULL);
375: el_set(e, EL_BIND, "\\e[1;5D", "ed-prev-word", NULL);
376: el_set(e, EL_BIND, "\\e[5C", "em-next-word", NULL);
1.138 mbalmer 377: el_set(e, EL_BIND, "\\e[5D", "ed-prev-word", NULL);
1.114 christos 378: el_set(e, EL_BIND, "\\e\\e[C", "em-next-word", NULL);
379: el_set(e, EL_BIND, "\\e\\e[D", "ed-prev-word", NULL);
380:
1.1 christos 381: /* read settings from configuration file */
382: el_source(e, NULL);
383:
1.12 jdolecek 384: /*
385: * Unfortunately, some applications really do use rl_point
386: * and rl_line_buffer directly.
387: */
1.91 christos 388: _resize_fun(e, &rl_line_buffer);
1.49 christos 389: _rl_update_pos();
1.1 christos 390:
1.146 christos 391: tty_end(e, TCSADRAIN);
1.143 christos 392:
1.96 christos 393: return 0;
1.1 christos 394: }
395:
1.11 lukem 396:
1.1 christos 397: /*
398: * read one line from input stream and return it, chomping
399: * trailing newline (if there is any)
400: */
401: char *
1.70 christos 402: readline(const char *p)
1.1 christos 403: {
1.92 christos 404: HistEvent ev;
1.70 christos 405: const char * volatile prompt = p;
1.3 thorpej 406: int count;
1.1 christos 407: const char *ret;
1.20 christos 408: char *buf;
1.38 christos 409: static int used_event_hook;
1.1 christos 410:
411: if (e == NULL || h == NULL)
412: rl_initialize();
1.142 christos 413: if (rl_did_startup_hook == 0 && rl_startup_hook) {
414: rl_did_startup_hook = 1;
415: (*rl_startup_hook)(NULL, 0);
416: }
1.143 christos 417: tty_init(e);
1.142 christos 418:
1.1 christos 419:
1.38 christos 420: rl_done = 0;
421:
1.70 christos 422: (void)setjmp(topbuf);
1.143 christos 423: buf = NULL;
1.70 christos 424:
1.9 jdolecek 425: /* update prompt accordingly to what has been passed */
1.78 christos 426: if (rl_set_prompt(prompt) == -1)
1.143 christos 427: goto out;
1.32 christos 428:
429: if (rl_pre_input_hook)
430: (*rl_pre_input_hook)(NULL, 0);
431:
1.146.2.1! pgoyette 432: if (rl_event_hook && !(e->el_flags & NO_TTY)) {
1.38 christos 433: el_set(e, EL_GETCFN, _rl_event_read_char);
434: used_event_hook = 1;
435: }
436:
437: if (!rl_event_hook && used_event_hook) {
438: el_set(e, EL_GETCFN, EL_BUILTIN_GETCFN);
439: used_event_hook = 0;
440: }
441:
1.32 christos 442: rl_already_prompted = 0;
443:
1.1 christos 444: /* get one line from input stream */
445: ret = el_gets(e, &count);
446:
447: if (ret && count > 0) {
1.5 christos 448: int lastidx;
1.1 christos 449:
1.20 christos 450: buf = strdup(ret);
1.23 christos 451: if (buf == NULL)
1.143 christos 452: goto out;
1.1 christos 453: lastidx = count - 1;
1.20 christos 454: if (buf[lastidx] == '\n')
455: buf[lastidx] = '\0';
1.1 christos 456: } else
1.20 christos 457: buf = NULL;
1.1 christos 458:
1.92 christos 459: history(h, &ev, H_GETSIZE);
1.1 christos 460: history_length = ev.num;
461:
1.143 christos 462: out:
1.146 christos 463: tty_end(e, TCSADRAIN);
1.20 christos 464: return buf;
1.1 christos 465: }
466:
467: /*
468: * history functions
469: */
470:
471: /*
472: * is normally called before application starts to use
473: * history expansion functions
474: */
475: void
1.11 lukem 476: using_history(void)
1.1 christos 477: {
478: if (h == NULL || e == NULL)
479: rl_initialize();
1.137 christos 480: history_offset = history_length;
1.1 christos 481: }
482:
1.11 lukem 483:
1.1 christos 484: /*
485: * substitute ``what'' with ``with'', returning resulting string; if
1.29 wiz 486: * globally == 1, substitutes all occurrences of what, otherwise only the
1.1 christos 487: * first one
488: */
1.11 lukem 489: static char *
490: _rl_compat_sub(const char *str, const char *what, const char *with,
491: int globally)
492: {
1.40 christos 493: const char *s;
494: char *r, *result;
495: size_t len, with_len, what_len;
1.1 christos 496:
1.40 christos 497: len = strlen(str);
498: with_len = strlen(with);
499: what_len = strlen(what);
500:
501: /* calculate length we need for result */
502: s = str;
503: while (*s) {
504: if (*s == *what && !strncmp(s, what, what_len)) {
505: len += with_len - what_len;
506: if (!globally)
507: break;
508: s += what_len;
509: } else
510: s++;
511: }
1.95 christos 512: r = result = el_malloc((len + 1) * sizeof(*r));
1.23 christos 513: if (result == NULL)
514: return NULL;
1.40 christos 515: s = str;
516: while (*s) {
517: if (*s == *what && !strncmp(s, what, what_len)) {
518: (void)strncpy(r, with, with_len);
519: r += with_len;
520: s += what_len;
521: if (!globally) {
522: (void)strcpy(r, s);
1.96 christos 523: return result;
1.1 christos 524: }
1.40 christos 525: } else
526: *r++ = *s++;
527: }
1.76 christos 528: *r = '\0';
1.96 christos 529: return result;
1.40 christos 530: }
531:
532: static char *last_search_pat; /* last !?pat[?] search pattern */
533: static char *last_search_match; /* last !?pat[?] that matched */
534:
535: const char *
536: get_history_event(const char *cmd, int *cindex, int qchar)
537: {
538: int idx, sign, sub, num, begin, ret;
539: size_t len;
540: char *pat;
541: const char *rptr;
1.92 christos 542: HistEvent ev;
1.40 christos 543:
544: idx = *cindex;
545: if (cmd[idx++] != history_expansion_char)
1.96 christos 546: return NULL;
1.40 christos 547:
548: /* find out which event to take */
1.76 christos 549: if (cmd[idx] == history_expansion_char || cmd[idx] == '\0') {
1.92 christos 550: if (history(h, &ev, H_FIRST) != 0)
1.96 christos 551: return NULL;
1.40 christos 552: *cindex = cmd[idx]? (idx + 1):idx;
1.92 christos 553: return ev.str;
1.40 christos 554: }
555: sign = 0;
556: if (cmd[idx] == '-') {
557: sign = 1;
558: idx++;
559: }
560:
561: if ('0' <= cmd[idx] && cmd[idx] <= '9') {
1.137 christos 562: HIST_ENTRY *he;
1.40 christos 563:
564: num = 0;
565: while (cmd[idx] && '0' <= cmd[idx] && cmd[idx] <= '9') {
566: num = num * 10 + cmd[idx] - '0';
567: idx++;
568: }
569: if (sign)
1.140 christos 570: num = history_length - num + history_base;
1.40 christos 571:
1.137 christos 572: if (!(he = history_get(num)))
1.96 christos 573: return NULL;
1.40 christos 574:
575: *cindex = idx;
1.137 christos 576: return he->line;
1.40 christos 577: }
578: sub = 0;
579: if (cmd[idx] == '?') {
580: sub = 1;
581: idx++;
582: }
583: begin = idx;
584: while (cmd[idx]) {
585: if (cmd[idx] == '\n')
586: break;
587: if (sub && cmd[idx] == '?')
588: break;
589: if (!sub && (cmd[idx] == ':' || cmd[idx] == ' '
590: || cmd[idx] == '\t' || cmd[idx] == qchar))
591: break;
592: idx++;
593: }
1.99 christos 594: len = (size_t)idx - (size_t)begin;
1.40 christos 595: if (sub && cmd[idx] == '?')
596: idx++;
597: if (sub && len == 0 && last_search_pat && *last_search_pat)
598: pat = last_search_pat;
599: else if (len == 0)
1.96 christos 600: return NULL;
1.40 christos 601: else {
1.95 christos 602: if ((pat = el_malloc((len + 1) * sizeof(*pat))) == NULL)
1.40 christos 603: return NULL;
604: (void)strncpy(pat, cmd + begin, len);
605: pat[len] = '\0';
606: }
607:
1.92 christos 608: if (history(h, &ev, H_CURR) != 0) {
1.40 christos 609: if (pat != last_search_pat)
1.95 christos 610: el_free(pat);
1.96 christos 611: return NULL;
1.40 christos 612: }
613: num = ev.num;
614:
615: if (sub) {
616: if (pat != last_search_pat) {
617: if (last_search_pat)
1.95 christos 618: el_free(last_search_pat);
1.40 christos 619: last_search_pat = pat;
1.1 christos 620: }
1.40 christos 621: ret = history_search(pat, -1);
622: } else
623: ret = history_search_prefix(pat, -1);
624:
625: if (ret == -1) {
626: /* restore to end of list on failed search */
1.92 christos 627: history(h, &ev, H_FIRST);
1.40 christos 628: (void)fprintf(rl_outstream, "%s: Event not found\n", pat);
629: if (pat != last_search_pat)
1.95 christos 630: el_free(pat);
1.96 christos 631: return NULL;
1.40 christos 632: }
633:
634: if (sub && len) {
635: if (last_search_match && last_search_match != pat)
1.95 christos 636: el_free(last_search_match);
1.40 christos 637: last_search_match = pat;
638: }
639:
640: if (pat != last_search_pat)
1.95 christos 641: el_free(pat);
1.40 christos 642:
1.92 christos 643: if (history(h, &ev, H_CURR) != 0)
1.96 christos 644: return NULL;
1.40 christos 645: *cindex = idx;
1.92 christos 646: rptr = ev.str;
1.40 christos 647:
648: /* roll back to original position */
1.92 christos 649: (void)history(h, &ev, H_SET, num);
1.1 christos 650:
1.40 christos 651: return rptr;
1.1 christos 652: }
653:
654: /*
655: * the real function doing history expansion - takes as argument command
656: * to do and data upon which the command should be executed
657: * does expansion the way I've understood readline documentation
658: *
659: * returns 0 if data was not modified, 1 if it was and 2 if the string
660: * should be only printed and not executed; in case of error,
661: * returns -1 and *result points to NULL
1.113 snj 662: * it's the caller's responsibility to free() the string returned in *result
1.1 christos 663: */
664: static int
1.40 christos 665: _history_expand_command(const char *command, size_t offs, size_t cmdlen,
666: char **result)
1.11 lukem 667: {
1.40 christos 668: char *tmp, *search = NULL, *aptr;
669: const char *ptr, *cmd;
1.11 lukem 670: static char *from = NULL, *to = NULL;
1.40 christos 671: int start, end, idx, has_mods = 0;
672: int p_on = 0, g_on = 0;
1.1 christos 673:
674: *result = NULL;
1.40 christos 675: aptr = NULL;
1.41 christos 676: ptr = NULL;
1.1 christos 677:
1.40 christos 678: /* First get event specifier */
679: idx = 0;
1.1 christos 680:
1.40 christos 681: if (strchr(":^*$", command[offs + 1])) {
682: char str[4];
683: /*
684: * "!:" is shorthand for "!!:".
685: * "!^", "!*" and "!$" are shorthand for
686: * "!!:^", "!!:*" and "!!:$" respectively.
687: */
688: str[0] = str[1] = '!';
689: str[2] = '0';
690: ptr = get_history_event(str, &idx, 0);
691: idx = (command[offs + 1] == ':')? 1:0;
692: has_mods = 1;
1.1 christos 693: } else {
1.40 christos 694: if (command[offs + 1] == '#') {
695: /* use command so far */
1.95 christos 696: if ((aptr = el_malloc((offs + 1) * sizeof(*aptr)))
697: == NULL)
1.40 christos 698: return -1;
699: (void)strncpy(aptr, command, offs);
700: aptr[offs] = '\0';
701: idx = 1;
1.1 christos 702: } else {
1.40 christos 703: int qchar;
704:
705: qchar = (offs > 0 && command[offs - 1] == '"')? '"':0;
706: ptr = get_history_event(command + offs, &idx, qchar);
707: }
1.99 christos 708: has_mods = command[offs + (size_t)idx] == ':';
1.40 christos 709: }
1.1 christos 710:
1.40 christos 711: if (ptr == NULL && aptr == NULL)
1.96 christos 712: return -1;
1.1 christos 713:
1.40 christos 714: if (!has_mods) {
1.85 christos 715: *result = strdup(aptr ? aptr : ptr);
1.40 christos 716: if (aptr)
1.95 christos 717: el_free(aptr);
1.85 christos 718: if (*result == NULL)
719: return -1;
1.96 christos 720: return 1;
1.40 christos 721: }
722:
723: cmd = command + offs + idx + 1;
724:
725: /* Now parse any word designators */
726:
727: if (*cmd == '%') /* last word matched by ?pat? */
728: tmp = strdup(last_search_match? last_search_match:"");
729: else if (strchr("^*$-0123456789", *cmd)) {
730: start = end = -1;
731: if (*cmd == '^')
732: start = end = 1, cmd++;
733: else if (*cmd == '$')
734: start = -1, cmd++;
735: else if (*cmd == '*')
736: start = 1, cmd++;
737: else if (*cmd == '-' || isdigit((unsigned char) *cmd)) {
738: start = 0;
739: while (*cmd && '0' <= *cmd && *cmd <= '9')
740: start = start * 10 + *cmd++ - '0';
741:
742: if (*cmd == '-') {
743: if (isdigit((unsigned char) cmd[1])) {
744: cmd++;
745: end = 0;
746: while (*cmd && '0' <= *cmd && *cmd <= '9')
747: end = end * 10 + *cmd++ - '0';
748: } else if (cmd[1] == '$') {
749: cmd += 2;
750: end = -1;
751: } else {
752: cmd++;
753: end = -2;
754: }
755: } else if (*cmd == '*')
756: end = -1, cmd++;
1.1 christos 757: else
1.40 christos 758: end = start;
759: }
760: tmp = history_arg_extract(start, end, aptr? aptr:ptr);
761: if (tmp == NULL) {
762: (void)fprintf(rl_outstream, "%s: Bad word specifier",
763: command + offs + idx);
764: if (aptr)
1.95 christos 765: el_free(aptr);
1.96 christos 766: return -1;
1.40 christos 767: }
768: } else
769: tmp = strdup(aptr? aptr:ptr);
1.1 christos 770:
1.40 christos 771: if (aptr)
1.95 christos 772: el_free(aptr);
1.1 christos 773:
1.77 lukem 774: if (*cmd == '\0' || ((size_t)(cmd - (command + offs)) >= cmdlen)) {
1.40 christos 775: *result = tmp;
1.96 christos 776: return 1;
1.1 christos 777: }
778:
779: for (; *cmd; cmd++) {
780: if (*cmd == ':')
781: continue;
1.40 christos 782: else if (*cmd == 'h') { /* remove trailing path */
783: if ((aptr = strrchr(tmp, '/')) != NULL)
1.76 christos 784: *aptr = '\0';
1.40 christos 785: } else if (*cmd == 't') { /* remove leading path */
786: if ((aptr = strrchr(tmp, '/')) != NULL) {
787: aptr = strdup(aptr + 1);
1.95 christos 788: el_free(tmp);
1.40 christos 789: tmp = aptr;
790: }
791: } else if (*cmd == 'r') { /* remove trailing suffix */
792: if ((aptr = strrchr(tmp, '.')) != NULL)
1.76 christos 793: *aptr = '\0';
1.40 christos 794: } else if (*cmd == 'e') { /* remove all but suffix */
795: if ((aptr = strrchr(tmp, '.')) != NULL) {
796: aptr = strdup(aptr);
1.95 christos 797: el_free(tmp);
1.40 christos 798: tmp = aptr;
799: }
800: } else if (*cmd == 'p') /* print only */
801: p_on = 1;
1.1 christos 802: else if (*cmd == 'g')
803: g_on = 2;
804: else if (*cmd == 's' || *cmd == '&') {
1.11 lukem 805: char *what, *with, delim;
1.30 christos 806: size_t len, from_len;
1.5 christos 807: size_t size;
1.1 christos 808:
809: if (*cmd == '&' && (from == NULL || to == NULL))
810: continue;
811: else if (*cmd == 's') {
812: delim = *(++cmd), cmd++;
813: size = 16;
1.95 christos 814: what = el_realloc(from, size * sizeof(*what));
1.23 christos 815: if (what == NULL) {
1.95 christos 816: el_free(from);
817: el_free(tmp);
1.28 christos 818: return 0;
1.23 christos 819: }
1.1 christos 820: len = 0;
821: for (; *cmd && *cmd != delim; cmd++) {
1.40 christos 822: if (*cmd == '\\' && cmd[1] == delim)
1.1 christos 823: cmd++;
1.23 christos 824: if (len >= size) {
825: char *nwhat;
1.95 christos 826: nwhat = el_realloc(what,
827: (size <<= 1) *
828: sizeof(*nwhat));
1.23 christos 829: if (nwhat == NULL) {
1.95 christos 830: el_free(what);
831: el_free(tmp);
1.28 christos 832: return 0;
1.23 christos 833: }
834: what = nwhat;
835: }
1.1 christos 836: what[len++] = *cmd;
837: }
838: what[len] = '\0';
839: from = what;
840: if (*what == '\0') {
1.95 christos 841: el_free(what);
1.23 christos 842: if (search) {
1.1 christos 843: from = strdup(search);
1.62 christos 844: if (from == NULL) {
1.95 christos 845: el_free(tmp);
1.28 christos 846: return 0;
1.62 christos 847: }
1.23 christos 848: } else {
1.1 christos 849: from = NULL;
1.95 christos 850: el_free(tmp);
1.96 christos 851: return -1;
1.1 christos 852: }
853: }
854: cmd++; /* shift after delim */
855: if (!*cmd)
856: continue;
857:
858: size = 16;
1.95 christos 859: with = el_realloc(to, size * sizeof(*with));
1.23 christos 860: if (with == NULL) {
1.95 christos 861: el_free(to);
862: el_free(tmp);
1.23 christos 863: return -1;
864: }
1.1 christos 865: len = 0;
866: from_len = strlen(from);
867: for (; *cmd && *cmd != delim; cmd++) {
868: if (len + from_len + 1 >= size) {
1.23 christos 869: char *nwith;
1.1 christos 870: size += from_len + 1;
1.95 christos 871: nwith = el_realloc(with,
872: size * sizeof(*nwith));
1.23 christos 873: if (nwith == NULL) {
1.95 christos 874: el_free(with);
875: el_free(tmp);
1.23 christos 876: return -1;
877: }
878: with = nwith;
1.1 christos 879: }
880: if (*cmd == '&') {
881: /* safe */
1.40 christos 882: (void)strcpy(&with[len], from);
1.1 christos 883: len += from_len;
884: continue;
885: }
886: if (*cmd == '\\'
887: && (*(cmd + 1) == delim
888: || *(cmd + 1) == '&'))
889: cmd++;
890: with[len++] = *cmd;
891: }
892: with[len] = '\0';
893: to = with;
894: }
895:
1.40 christos 896: aptr = _rl_compat_sub(tmp, from, to, g_on);
897: if (aptr) {
1.95 christos 898: el_free(tmp);
1.40 christos 899: tmp = aptr;
1.23 christos 900: }
1.40 christos 901: g_on = 0;
1.1 christos 902: }
1.5 christos 903: }
1.40 christos 904: *result = tmp;
1.96 christos 905: return p_on? 2:1;
1.1 christos 906: }
907:
1.11 lukem 908:
1.1 christos 909: /*
910: * csh-style history expansion
911: */
912: int
1.11 lukem 913: history_expand(char *str, char **output)
914: {
1.40 christos 915: int ret = 0;
916: size_t idx, i, size;
917: char *tmp, *result;
1.1 christos 918:
919: if (h == NULL || e == NULL)
920: rl_initialize();
921:
1.40 christos 922: if (history_expansion_char == 0) {
923: *output = strdup(str);
1.96 christos 924: return 0;
1.40 christos 925: }
1.1 christos 926:
1.40 christos 927: *output = NULL;
1.1 christos 928: if (str[0] == history_subst_char) {
929: /* ^foo^foo2^ is equivalent to !!:s^foo^foo2^ */
1.100 christos 930: *output = el_malloc((strlen(str) + 4 + 1) * sizeof(**output));
1.40 christos 931: if (*output == NULL)
932: return 0;
933: (*output)[0] = (*output)[1] = history_expansion_char;
934: (*output)[2] = ':';
935: (*output)[3] = 's';
936: (void)strcpy((*output) + 4, str);
937: str = *output;
938: } else {
939: *output = strdup(str);
940: if (*output == NULL)
941: return 0;
1.1 christos 942: }
1.40 christos 943:
1.63 christos 944: #define ADD_STRING(what, len, fr) \
1.1 christos 945: { \
1.23 christos 946: if (idx + len + 1 > size) { \
1.95 christos 947: char *nresult = el_realloc(result, \
948: (size += len + 1) * sizeof(*nresult)); \
1.23 christos 949: if (nresult == NULL) { \
1.95 christos 950: el_free(*output); \
1.65 christos 951: if (/*CONSTCOND*/fr) \
1.95 christos 952: el_free(tmp); \
1.28 christos 953: return 0; \
1.23 christos 954: } \
955: result = nresult; \
956: } \
1.1 christos 957: (void)strncpy(&result[idx], what, len); \
958: idx += len; \
959: result[idx] = '\0'; \
960: }
961:
962: result = NULL;
963: size = idx = 0;
1.64 christos 964: tmp = NULL;
1.1 christos 965: for (i = 0; str[i];) {
1.40 christos 966: int qchar, loop_again;
967: size_t len, start, j;
1.1 christos 968:
1.40 christos 969: qchar = 0;
1.1 christos 970: loop_again = 1;
971: start = j = i;
972: loop:
973: for (; str[j]; j++) {
974: if (str[j] == '\\' &&
975: str[j + 1] == history_expansion_char) {
1.115 christos 976: len = strlen(&str[j + 1]) + 1;
977: memmove(&str[j], &str[j + 1], len);
1.1 christos 978: continue;
979: }
980: if (!loop_again) {
1.40 christos 981: if (isspace((unsigned char) str[j])
982: || str[j] == qchar)
1.1 christos 983: break;
984: }
985: if (str[j] == history_expansion_char
986: && !strchr(history_no_expand_chars, str[j + 1])
987: && (!history_inhibit_expansion_function ||
1.40 christos 988: (*history_inhibit_expansion_function)(str,
989: (int)j) == 0))
1.1 christos 990: break;
991: }
992:
1.40 christos 993: if (str[j] && loop_again) {
1.1 christos 994: i = j;
1.40 christos 995: qchar = (j > 0 && str[j - 1] == '"' )? '"':0;
1.1 christos 996: j++;
997: if (str[j] == history_expansion_char)
998: j++;
999: loop_again = 0;
1000: goto loop;
1001: }
1002: len = i - start;
1.64 christos 1003: ADD_STRING(&str[start], len, 0);
1.1 christos 1004:
1.40 christos 1005: if (str[i] == '\0' || str[i] != history_expansion_char) {
1.1 christos 1006: len = j - i;
1.64 christos 1007: ADD_STRING(&str[i], len, 0);
1.1 christos 1008: if (start == 0)
1.40 christos 1009: ret = 0;
1.1 christos 1010: else
1.40 christos 1011: ret = 1;
1.1 christos 1012: break;
1013: }
1.40 christos 1014: ret = _history_expand_command (str, i, (j - i), &tmp);
1015: if (ret > 0 && tmp) {
1016: len = strlen(tmp);
1.63 christos 1017: ADD_STRING(tmp, len, 1);
1.66 christos 1018: }
1019: if (tmp) {
1.95 christos 1020: el_free(tmp);
1.64 christos 1021: tmp = NULL;
1.1 christos 1022: }
1023: i = j;
1.40 christos 1024: }
1.1 christos 1025:
1.40 christos 1026: /* ret is 2 for "print only" option */
1027: if (ret == 2) {
1028: add_history(result);
1.1 christos 1029: #ifdef GDB_411_HACK
1030: /* gdb 4.11 has been shipped with readline, where */
1031: /* history_expand() returned -1 when the line */
1032: /* should not be executed; in readline 2.1+ */
1033: /* it should return 2 in such a case */
1.40 christos 1034: ret = -1;
1.1 christos 1035: #endif
1036: }
1.95 christos 1037: el_free(*output);
1.1 christos 1038: *output = result;
1039:
1.96 christos 1040: return ret;
1.1 christos 1041: }
1042:
1.40 christos 1043: /*
1044: * Return a string consisting of arguments of "str" from "start" to "end".
1045: */
1046: char *
1047: history_arg_extract(int start, int end, const char *str)
1048: {
1049: size_t i, len, max;
1.84 christos 1050: char **arr, *result = NULL;
1.40 christos 1051:
1052: arr = history_tokenize(str);
1053: if (!arr)
1.84 christos 1054: return NULL;
1055: if (arr && *arr == NULL)
1056: goto out;
1.40 christos 1057:
1058: for (max = 0; arr[max]; max++)
1059: continue;
1060: max--;
1061:
1062: if (start == '$')
1.80 christos 1063: start = (int)max;
1.40 christos 1064: if (end == '$')
1.80 christos 1065: end = (int)max;
1.40 christos 1066: if (end < 0)
1.80 christos 1067: end = (int)max + end + 1;
1.40 christos 1068: if (start < 0)
1069: start = end;
1070:
1.84 christos 1071: if (start < 0 || end < 0 || (size_t)start > max ||
1072: (size_t)end > max || start > end)
1073: goto out;
1.40 christos 1074:
1.99 christos 1075: for (i = (size_t)start, len = 0; i <= (size_t)end; i++)
1.40 christos 1076: len += strlen(arr[i]) + 1;
1077: len++;
1.95 christos 1078: result = el_malloc(len * sizeof(*result));
1.40 christos 1079: if (result == NULL)
1.84 christos 1080: goto out;
1.40 christos 1081:
1.99 christos 1082: for (i = (size_t)start, len = 0; i <= (size_t)end; i++) {
1.40 christos 1083: (void)strcpy(result + len, arr[i]);
1084: len += strlen(arr[i]);
1.77 lukem 1085: if (i < (size_t)end)
1.40 christos 1086: result[len++] = ' ';
1087: }
1.76 christos 1088: result[len] = '\0';
1.40 christos 1089:
1.84 christos 1090: out:
1.40 christos 1091: for (i = 0; arr[i]; i++)
1.95 christos 1092: el_free(arr[i]);
1093: el_free(arr);
1.40 christos 1094:
1.84 christos 1095: return result;
1.40 christos 1096: }
1.11 lukem 1097:
1.1 christos 1098: /*
1.40 christos 1099: * Parse the string into individual tokens,
1100: * similar to how shell would do it.
1.1 christos 1101: */
1102: char **
1.11 lukem 1103: history_tokenize(const char *str)
1.1 christos 1104: {
1.40 christos 1105: int size = 1, idx = 0, i, start;
1.5 christos 1106: size_t len;
1.1 christos 1107: char **result = NULL, *temp, delim = '\0';
1108:
1.40 christos 1109: for (i = 0; str[i];) {
1.4 christos 1110: while (isspace((unsigned char) str[i]))
1.1 christos 1111: i++;
1112: start = i;
1.40 christos 1113: for (; str[i];) {
1.9 jdolecek 1114: if (str[i] == '\\') {
1.14 jdolecek 1115: if (str[i+1] != '\0')
1.9 jdolecek 1116: i++;
1117: } else if (str[i] == delim)
1.1 christos 1118: delim = '\0';
1119: else if (!delim &&
1.11 lukem 1120: (isspace((unsigned char) str[i]) ||
1121: strchr("()<>;&|$", str[i])))
1.1 christos 1122: break;
1123: else if (!delim && strchr("'`\"", str[i]))
1124: delim = str[i];
1.40 christos 1125: if (str[i])
1126: i++;
1.1 christos 1127: }
1128:
1.40 christos 1129: if (idx + 2 >= size) {
1.23 christos 1130: char **nresult;
1.1 christos 1131: size <<= 1;
1.99 christos 1132: nresult = el_realloc(result, (size_t)size * sizeof(*nresult));
1.23 christos 1133: if (nresult == NULL) {
1.95 christos 1134: el_free(result);
1.23 christos 1135: return NULL;
1136: }
1137: result = nresult;
1.1 christos 1138: }
1.99 christos 1139: len = (size_t)i - (size_t)start;
1140: temp = el_malloc((size_t)(len + 1) * sizeof(*temp));
1.23 christos 1141: if (temp == NULL) {
1.40 christos 1142: for (i = 0; i < idx; i++)
1.95 christos 1143: el_free(result[i]);
1144: el_free(result);
1.23 christos 1145: return NULL;
1146: }
1.40 christos 1147: (void)strncpy(temp, &str[start], len);
1.1 christos 1148: temp[len] = '\0';
1.40 christos 1149: result[idx++] = temp;
1150: result[idx] = NULL;
1151: if (str[i])
1152: i++;
1.1 christos 1153: }
1.96 christos 1154: return result;
1.1 christos 1155: }
1156:
1.11 lukem 1157:
1.1 christos 1158: /*
1159: * limit size of history record to ``max'' events
1160: */
1161: void
1.11 lukem 1162: stifle_history(int max)
1.1 christos 1163: {
1.92 christos 1164: HistEvent ev;
1.130 christos 1165: HIST_ENTRY *he;
1.1 christos 1166:
1167: if (h == NULL || e == NULL)
1168: rl_initialize();
1169:
1.130 christos 1170: if (history(h, &ev, H_SETSIZE, max) == 0) {
1.1 christos 1171: max_input_history = max;
1.136 christos 1172: if (history_length > max)
1173: history_base = history_length - max;
1.135 christos 1174: while (history_length > max) {
1.134 christos 1175: he = remove_history(0);
1.130 christos 1176: el_free(he->data);
1177: el_free((void *)(unsigned long)he->line);
1178: el_free(he);
1179: }
1180: }
1.1 christos 1181: }
1182:
1.11 lukem 1183:
1.1 christos 1184: /*
1185: * "unlimit" size of history - set the limit to maximum allowed int value
1186: */
1187: int
1.11 lukem 1188: unstifle_history(void)
1.1 christos 1189: {
1.92 christos 1190: HistEvent ev;
1.1 christos 1191: int omax;
1192:
1.92 christos 1193: history(h, &ev, H_SETSIZE, INT_MAX);
1.1 christos 1194: omax = max_input_history;
1195: max_input_history = INT_MAX;
1.96 christos 1196: return omax; /* some value _must_ be returned */
1.1 christos 1197: }
1198:
1.11 lukem 1199:
1.1 christos 1200: int
1.11 lukem 1201: history_is_stifled(void)
1.1 christos 1202: {
1.11 lukem 1203:
1.1 christos 1204: /* cannot return true answer */
1.96 christos 1205: return max_input_history != INT_MAX;
1.1 christos 1206: }
1207:
1.85 christos 1208: static const char _history_tmp_template[] = "/tmp/.historyXXXXXX";
1209:
1210: int
1211: history_truncate_file (const char *filename, int nlines)
1212: {
1213: int ret = 0;
1214: FILE *fp, *tp;
1215: char template[sizeof(_history_tmp_template)];
1216: char buf[4096];
1217: int fd;
1218: char *cp;
1219: off_t off;
1220: int count = 0;
1221: ssize_t left = 0;
1222:
1223: if (filename == NULL && (filename = _default_history_file()) == NULL)
1224: return errno;
1225: if ((fp = fopen(filename, "r+")) == NULL)
1226: return errno;
1227: strcpy(template, _history_tmp_template);
1228: if ((fd = mkstemp(template)) == -1) {
1229: ret = errno;
1230: goto out1;
1231: }
1232:
1233: if ((tp = fdopen(fd, "r+")) == NULL) {
1234: close(fd);
1235: ret = errno;
1236: goto out2;
1237: }
1238:
1239: for(;;) {
1.98 christos 1240: if (fread(buf, sizeof(buf), (size_t)1, fp) != 1) {
1.85 christos 1241: if (ferror(fp)) {
1242: ret = errno;
1243: break;
1244: }
1245: if (fseeko(fp, (off_t)sizeof(buf) * count, SEEK_SET) ==
1246: (off_t)-1) {
1247: ret = errno;
1248: break;
1249: }
1.99 christos 1250: left = (ssize_t)fread(buf, (size_t)1, sizeof(buf), fp);
1.85 christos 1251: if (ferror(fp)) {
1252: ret = errno;
1253: break;
1254: }
1255: if (left == 0) {
1256: count--;
1257: left = sizeof(buf);
1.98 christos 1258: } else if (fwrite(buf, (size_t)left, (size_t)1, tp)
1259: != 1) {
1.85 christos 1260: ret = errno;
1261: break;
1262: }
1263: fflush(tp);
1264: break;
1265: }
1.98 christos 1266: if (fwrite(buf, sizeof(buf), (size_t)1, tp) != 1) {
1.85 christos 1267: ret = errno;
1268: break;
1269: }
1270: count++;
1271: }
1272: if (ret)
1273: goto out3;
1274: cp = buf + left - 1;
1275: if(*cp != '\n')
1276: cp++;
1277: for(;;) {
1278: while (--cp >= buf) {
1279: if (*cp == '\n') {
1280: if (--nlines == 0) {
1281: if (++cp >= buf + sizeof(buf)) {
1282: count++;
1283: cp = buf;
1284: }
1285: break;
1286: }
1287: }
1288: }
1289: if (nlines <= 0 || count == 0)
1290: break;
1291: count--;
1292: if (fseeko(tp, (off_t)sizeof(buf) * count, SEEK_SET) < 0) {
1293: ret = errno;
1294: break;
1295: }
1.98 christos 1296: if (fread(buf, sizeof(buf), (size_t)1, tp) != 1) {
1.85 christos 1297: if (ferror(tp)) {
1298: ret = errno;
1299: break;
1300: }
1301: ret = EAGAIN;
1302: break;
1303: }
1304: cp = buf + sizeof(buf);
1305: }
1306:
1307: if (ret || nlines > 0)
1308: goto out3;
1309:
1.98 christos 1310: if (fseeko(fp, (off_t)0, SEEK_SET) == (off_t)-1) {
1.85 christos 1311: ret = errno;
1312: goto out3;
1313: }
1314:
1315: if (fseeko(tp, (off_t)sizeof(buf) * count + (cp - buf), SEEK_SET) ==
1316: (off_t)-1) {
1317: ret = errno;
1318: goto out3;
1319: }
1320:
1321: for(;;) {
1.99 christos 1322: if ((left = (ssize_t)fread(buf, (size_t)1, sizeof(buf), tp)) == 0) {
1.85 christos 1323: if (ferror(fp))
1324: ret = errno;
1325: break;
1326: }
1.98 christos 1327: if (fwrite(buf, (size_t)left, (size_t)1, fp) != 1) {
1.85 christos 1328: ret = errno;
1329: break;
1330: }
1331: }
1332: fflush(fp);
1333: if((off = ftello(fp)) > 0)
1334: (void)ftruncate(fileno(fp), off);
1335: out3:
1336: fclose(tp);
1337: out2:
1338: unlink(template);
1339: out1:
1340: fclose(fp);
1341:
1342: return ret;
1343: }
1344:
1.11 lukem 1345:
1.1 christos 1346: /*
1347: * read history from a file given
1348: */
1349: int
1.11 lukem 1350: read_history(const char *filename)
1.1 christos 1351: {
1.92 christos 1352: HistEvent ev;
1.1 christos 1353:
1354: if (h == NULL || e == NULL)
1355: rl_initialize();
1.85 christos 1356: if (filename == NULL && (filename = _default_history_file()) == NULL)
1357: return errno;
1.144 kre 1358: errno = 0;
1359: if (history(h, &ev, H_LOAD, filename) == -1)
1360: return errno ? errno : EINVAL;
1361: if (history(h, &ev, H_GETSIZE) == 0)
1362: history_length = ev.num;
1363: if (history_length < 0)
1364: return EINVAL;
1365: return 0;
1.1 christos 1366: }
1367:
1.11 lukem 1368:
1.1 christos 1369: /*
1370: * write history to a file given
1371: */
1372: int
1.11 lukem 1373: write_history(const char *filename)
1.1 christos 1374: {
1.92 christos 1375: HistEvent ev;
1.1 christos 1376:
1377: if (h == NULL || e == NULL)
1378: rl_initialize();
1.85 christos 1379: if (filename == NULL && (filename = _default_history_file()) == NULL)
1380: return errno;
1.96 christos 1381: return history(h, &ev, H_SAVE, filename) == -1 ?
1382: (errno ? errno : EINVAL) : 0;
1.1 christos 1383: }
1384:
1.142 christos 1385: int
1386: append_history(int n, const char *filename)
1387: {
1388: HistEvent ev;
1389: FILE *fp;
1390:
1391: if (h == NULL || e == NULL)
1392: rl_initialize();
1393: if (filename == NULL && (filename = _default_history_file()) == NULL)
1394: return errno;
1395:
1396: if ((fp = fopen(filename, "a")) == NULL)
1397: return errno;
1398:
1399: if (history(h, &ev, H_NSAVE_FP, (size_t)n, fp) == -1) {
1400: int serrno = errno ? errno : EINVAL;
1401: fclose(fp);
1402: return serrno;
1403: }
1404: fclose(fp);
1405: return 0;
1406: }
1.11 lukem 1407:
1.1 christos 1408: /*
1409: * returns history ``num''th event
1410: *
1411: * returned pointer points to static variable
1412: */
1.2 christos 1413: HIST_ENTRY *
1.11 lukem 1414: history_get(int num)
1.1 christos 1415: {
1416: static HIST_ENTRY she;
1.92 christos 1417: HistEvent ev;
1.40 christos 1418: int curr_num;
1.1 christos 1419:
1420: if (h == NULL || e == NULL)
1421: rl_initialize();
1422:
1.131 christos 1423: if (num < history_base)
1424: return NULL;
1425:
1.40 christos 1426: /* save current position */
1.92 christos 1427: if (history(h, &ev, H_CURR) != 0)
1.96 christos 1428: return NULL;
1.1 christos 1429: curr_num = ev.num;
1.40 christos 1430:
1.131 christos 1431: /*
1432: * use H_DELDATA to set to nth history (without delete) by passing
1433: * (void **)-1 -- as in history_set_pos
1434: */
1435: if (history(h, &ev, H_DELDATA, num - history_base, (void **)-1) != 0)
1436: goto out;
1.1 christos 1437:
1.131 christos 1438: /* get current entry */
1439: if (history(h, &ev, H_CURR) != 0)
1440: goto out;
1441: if (history(h, &ev, H_NEXT_EVDATA, ev.num, &she.data) != 0)
1442: goto out;
1.92 christos 1443: she.line = ev.str;
1.1 christos 1444:
1.40 christos 1445: /* restore pointer to where it was */
1.92 christos 1446: (void)history(h, &ev, H_SET, curr_num);
1.1 christos 1447:
1.96 christos 1448: return &she;
1.131 christos 1449:
1450: out:
1451: /* restore pointer to where it was */
1452: (void)history(h, &ev, H_SET, curr_num);
1453: return NULL;
1.1 christos 1454: }
1455:
1.11 lukem 1456:
1.1 christos 1457: /*
1458: * add the line to history table
1459: */
1460: int
1.11 lukem 1461: add_history(const char *line)
1.1 christos 1462: {
1.92 christos 1463: HistEvent ev;
1.1 christos 1464:
1465: if (h == NULL || e == NULL)
1466: rl_initialize();
1467:
1.135 christos 1468: if (history(h, &ev, H_ENTER, line) == -1)
1469: return 0;
1470:
1471: (void)history(h, &ev, H_GETSIZE);
1472: if (ev.num == history_length)
1473: history_base++;
1474: else
1.1 christos 1475: history_length = ev.num;
1.135 christos 1476: return 0;
1.1 christos 1477: }
1478:
1.11 lukem 1479:
1.1 christos 1480: /*
1.58 christos 1481: * remove the specified entry from the history list and return it.
1482: */
1483: HIST_ENTRY *
1484: remove_history(int num)
1485: {
1.85 christos 1486: HIST_ENTRY *he;
1.92 christos 1487: HistEvent ev;
1.58 christos 1488:
1489: if (h == NULL || e == NULL)
1490: rl_initialize();
1491:
1.95 christos 1492: if ((he = el_malloc(sizeof(*he))) == NULL)
1.58 christos 1493: return NULL;
1494:
1.92 christos 1495: if (history(h, &ev, H_DELDATA, num, &he->data) != 0) {
1.95 christos 1496: el_free(he);
1.71 christos 1497: return NULL;
1.85 christos 1498: }
1.71 christos 1499:
1.92 christos 1500: he->line = ev.str;
1501: if (history(h, &ev, H_GETSIZE) == 0)
1.85 christos 1502: history_length = ev.num;
1.58 christos 1503:
1.85 christos 1504: return he;
1.58 christos 1505: }
1506:
1507:
1508: /*
1.85 christos 1509: * replace the line and data of the num-th entry
1510: */
1511: HIST_ENTRY *
1512: replace_history_entry(int num, const char *line, histdata_t data)
1513: {
1514: HIST_ENTRY *he;
1.92 christos 1515: HistEvent ev;
1.85 christos 1516: int curr_num;
1517:
1518: if (h == NULL || e == NULL)
1519: rl_initialize();
1520:
1521: /* save current position */
1.92 christos 1522: if (history(h, &ev, H_CURR) != 0)
1.85 christos 1523: return NULL;
1524: curr_num = ev.num;
1525:
1526: /* start from the oldest */
1.92 christos 1527: if (history(h, &ev, H_LAST) != 0)
1.85 christos 1528: return NULL; /* error */
1529:
1.95 christos 1530: if ((he = el_malloc(sizeof(*he))) == NULL)
1.85 christos 1531: return NULL;
1532:
1533: /* look forwards for event matching specified offset */
1.92 christos 1534: if (history(h, &ev, H_NEXT_EVDATA, num, &he->data))
1.85 christos 1535: goto out;
1536:
1.92 christos 1537: he->line = strdup(ev.str);
1.85 christos 1538: if (he->line == NULL)
1539: goto out;
1540:
1.92 christos 1541: if (history(h, &ev, H_REPLACE, line, data))
1.85 christos 1542: goto out;
1543:
1544: /* restore pointer to where it was */
1.92 christos 1545: if (history(h, &ev, H_SET, curr_num))
1.85 christos 1546: goto out;
1547:
1548: return he;
1549: out:
1.95 christos 1550: el_free(he);
1.85 christos 1551: return NULL;
1552: }
1553:
1554: /*
1.1 christos 1555: * clear the history list - delete all entries
1556: */
1557: void
1.11 lukem 1558: clear_history(void)
1.1 christos 1559: {
1.92 christos 1560: HistEvent ev;
1.11 lukem 1561:
1.110 christos 1562: if (h == NULL || e == NULL)
1563: rl_initialize();
1564:
1.92 christos 1565: (void)history(h, &ev, H_CLEAR);
1.137 christos 1566: history_offset = history_length = 0;
1.1 christos 1567: }
1568:
1.11 lukem 1569:
1.1 christos 1570: /*
1571: * returns offset of the current history event
1572: */
1573: int
1.11 lukem 1574: where_history(void)
1.1 christos 1575: {
1.137 christos 1576: return history_offset;
1577: }
1578:
1579: static HIST_ENTRY **_history_listp;
1580: static HIST_ENTRY *_history_list;
1581:
1582: HIST_ENTRY **
1583: history_list(void)
1584: {
1.92 christos 1585: HistEvent ev;
1.137 christos 1586: HIST_ENTRY **nlp, *nl;
1587: int i;
1.1 christos 1588:
1.137 christos 1589: if (history(h, &ev, H_LAST) != 0)
1590: return NULL;
1.1 christos 1591:
1.137 christos 1592: if ((nlp = el_realloc(_history_listp,
1593: (size_t)history_length * sizeof(*nlp))) == NULL)
1594: return NULL;
1595: _history_listp = nlp;
1.133 christos 1596:
1.137 christos 1597: if ((nl = el_realloc(_history_list,
1598: (size_t)history_length * sizeof(*nl))) == NULL)
1599: return NULL;
1600: _history_list = nl;
1601:
1602: i = 0;
1603: do {
1604: _history_listp[i] = &_history_list[i];
1605: _history_list[i].line = ev.str;
1606: _history_list[i].data = NULL;
1607: if (i++ == history_length)
1608: abort();
1609: } while (history(h, &ev, H_PREV) == 0);
1610: return _history_listp;
1.1 christos 1611: }
1612:
1613: /*
1614: * returns current history event or NULL if there is no such event
1615: */
1.2 christos 1616: HIST_ENTRY *
1.11 lukem 1617: current_history(void)
1.1 christos 1618: {
1.137 christos 1619: HistEvent ev;
1620:
1621: if (history(h, &ev, H_PREV_EVENT, history_offset + 1) != 0)
1622: return NULL;
1.11 lukem 1623:
1.137 christos 1624: rl_he.line = ev.str;
1625: rl_he.data = NULL;
1626: return &rl_he;
1.1 christos 1627: }
1628:
1.11 lukem 1629:
1.1 christos 1630: /*
1631: * returns total number of bytes history events' data are using
1632: */
1633: int
1.11 lukem 1634: history_total_bytes(void)
1.1 christos 1635: {
1.92 christos 1636: HistEvent ev;
1.80 christos 1637: int curr_num;
1638: size_t size;
1.1 christos 1639:
1.92 christos 1640: if (history(h, &ev, H_CURR) != 0)
1.96 christos 1641: return -1;
1.1 christos 1642: curr_num = ev.num;
1643:
1.92 christos 1644: (void)history(h, &ev, H_FIRST);
1.1 christos 1645: size = 0;
1646: do
1.92 christos 1647: size += strlen(ev.str) * sizeof(*ev.str);
1648: while (history(h, &ev, H_NEXT) == 0);
1.1 christos 1649:
1650: /* get to the same position as before */
1.92 christos 1651: history(h, &ev, H_PREV_EVENT, curr_num);
1.1 christos 1652:
1.96 christos 1653: return (int)size;
1.1 christos 1654: }
1655:
1.11 lukem 1656:
1.1 christos 1657: /*
1658: * sets the position in the history list to ``pos''
1659: */
1660: int
1.11 lukem 1661: history_set_pos(int pos)
1.1 christos 1662: {
1.85 christos 1663: if (pos >= history_length || pos < 0)
1.129 christos 1664: return 0;
1.1 christos 1665:
1.137 christos 1666: history_offset = pos;
1.129 christos 1667: return 1;
1.1 christos 1668: }
1669:
1.11 lukem 1670:
1.1 christos 1671: /*
1672: * returns previous event in history and shifts pointer accordingly
1.132 christos 1673: * Note that readline and editline define directions in opposite ways.
1.1 christos 1674: */
1.2 christos 1675: HIST_ENTRY *
1.11 lukem 1676: previous_history(void)
1.1 christos 1677: {
1.137 christos 1678: HistEvent ev;
1679:
1680: if (history_offset == 0)
1681: return NULL;
1.11 lukem 1682:
1.137 christos 1683: if (history(h, &ev, H_LAST) != 0)
1684: return NULL;
1685:
1686: history_offset--;
1687: return current_history();
1.1 christos 1688: }
1689:
1.11 lukem 1690:
1.1 christos 1691: /*
1692: * returns next event in history and shifts pointer accordingly
1693: */
1.2 christos 1694: HIST_ENTRY *
1.11 lukem 1695: next_history(void)
1.1 christos 1696: {
1.137 christos 1697: HistEvent ev;
1698:
1699: if (history_offset >= history_length)
1700: return NULL;
1701:
1702: if (history(h, &ev, H_LAST) != 0)
1703: return NULL;
1.11 lukem 1704:
1.137 christos 1705: history_offset++;
1706: return current_history();
1.1 christos 1707: }
1708:
1.11 lukem 1709:
1.1 christos 1710: /*
1.40 christos 1711: * searches for first history event containing the str
1.1 christos 1712: */
1.40 christos 1713: int
1714: history_search(const char *str, int direction)
1.11 lukem 1715: {
1.92 christos 1716: HistEvent ev;
1717: const char *strp;
1.11 lukem 1718: int curr_num;
1.1 christos 1719:
1.92 christos 1720: if (history(h, &ev, H_CURR) != 0)
1.96 christos 1721: return -1;
1.1 christos 1722: curr_num = ev.num;
1723:
1724: for (;;) {
1.92 christos 1725: if ((strp = strstr(ev.str, str)) != NULL)
1.96 christos 1726: return (int)(strp - ev.str);
1.92 christos 1727: if (history(h, &ev, direction < 0 ? H_NEXT:H_PREV) != 0)
1.1 christos 1728: break;
1729: }
1.92 christos 1730: (void)history(h, &ev, H_SET, curr_num);
1.96 christos 1731: return -1;
1.1 christos 1732: }
1733:
1.11 lukem 1734:
1.1 christos 1735: /*
1736: * searches for first history event beginning with str
1737: */
1738: int
1.11 lukem 1739: history_search_prefix(const char *str, int direction)
1.1 christos 1740: {
1.92 christos 1741: HistEvent ev;
1.11 lukem 1742:
1.92 christos 1743: return (history(h, &ev, direction < 0 ?
1.88 christos 1744: H_PREV_STR : H_NEXT_STR, str));
1.1 christos 1745: }
1746:
1.11 lukem 1747:
1.1 christos 1748: /*
1749: * search for event in history containing str, starting at offset
1750: * abs(pos); continue backward, if pos<0, forward otherwise
1751: */
1.5 christos 1752: /* ARGSUSED */
1.1 christos 1753: int
1.40 christos 1754: history_search_pos(const char *str,
1.30 christos 1755: int direction __attribute__((__unused__)), int pos)
1.1 christos 1756: {
1.92 christos 1757: HistEvent ev;
1.11 lukem 1758: int curr_num, off;
1.1 christos 1759:
1760: off = (pos > 0) ? pos : -pos;
1761: pos = (pos > 0) ? 1 : -1;
1762:
1.92 christos 1763: if (history(h, &ev, H_CURR) != 0)
1.96 christos 1764: return -1;
1.1 christos 1765: curr_num = ev.num;
1766:
1.129 christos 1767: if (!history_set_pos(off) || history(h, &ev, H_CURR) != 0)
1.96 christos 1768: return -1;
1.1 christos 1769:
1770: for (;;) {
1.92 christos 1771: if (strstr(ev.str, str))
1.96 christos 1772: return off;
1.92 christos 1773: if (history(h, &ev, (pos < 0) ? H_PREV : H_NEXT) != 0)
1.1 christos 1774: break;
1775: }
1776:
1777: /* set "current" pointer back to previous state */
1.92 christos 1778: (void)history(h, &ev,
1.88 christos 1779: pos < 0 ? H_NEXT_EVENT : H_PREV_EVENT, curr_num);
1.1 christos 1780:
1.96 christos 1781: return -1;
1.1 christos 1782: }
1783:
1784:
1785: /********************************/
1.40 christos 1786: /* completion functions */
1.1 christos 1787:
1.57 christos 1788: char *
1789: tilde_expand(char *name)
1790: {
1791: return fn_tilde_expand(name);
1792: }
1793:
1794: char *
1795: filename_completion_function(const char *name, int state)
1796: {
1797: return fn_filename_completion_function(name, state);
1798: }
1799:
1.1 christos 1800: /*
1801: * a completion generator for usernames; returns _first_ username
1802: * which starts with supplied text
1803: * text contains a partial username preceded by random character
1.94 christos 1804: * (usually '~'); state resets search from start (??? should we do that anyway)
1.113 snj 1805: * it's the caller's responsibility to free the returned value
1.1 christos 1806: */
1.11 lukem 1807: char *
1808: username_completion_function(const char *text, int state)
1.1 christos 1809: {
1.94 christos 1810: #if defined(HAVE_GETPW_R_POSIX) || defined(HAVE_GETPW_R_DRAFT)
1811: struct passwd pwres;
1.50 christos 1812: char pwbuf[1024];
1.94 christos 1813: #endif
1814: struct passwd *pass = NULL;
1.1 christos 1815:
1816: if (text[0] == '\0')
1.96 christos 1817: return NULL;
1.1 christos 1818:
1819: if (*text == '~')
1820: text++;
1821:
1822: if (state == 0)
1823: setpwent();
1824:
1.94 christos 1825: while (
1826: #if defined(HAVE_GETPW_R_POSIX) || defined(HAVE_GETPW_R_DRAFT)
1827: getpwent_r(&pwres, pwbuf, sizeof(pwbuf), &pass) == 0 && pass != NULL
1828: #else
1829: (pass = getpwent()) != NULL
1830: #endif
1831: && text[0] == pass->pw_name[0]
1832: && strcmp(text, pass->pw_name) == 0)
1833: continue;
1.1 christos 1834:
1.94 christos 1835: if (pass == NULL) {
1.1 christos 1836: endpwent();
1.85 christos 1837: return NULL;
1.1 christos 1838: }
1.94 christos 1839: return strdup(pass->pw_name);
1.1 christos 1840: }
1841:
1.11 lukem 1842:
1.1 christos 1843: /*
1.46 christos 1844: * el-compatible wrapper to send TSTP on ^Z
1845: */
1846: /* ARGSUSED */
1847: static unsigned char
1848: _el_rl_tstp(EditLine *el __attribute__((__unused__)), int ch __attribute__((__unused__)))
1849: {
1850: (void)kill(0, SIGTSTP);
1851: return CC_NORM;
1852: }
1.11 lukem 1853:
1.56 christos 1854: static const char *
1855: /*ARGSUSED*/
1856: _rl_completion_append_character_function(const char *dummy
1857: __attribute__((__unused__)))
1858: {
1859: static char buf[2];
1.99 christos 1860: buf[0] = (char)rl_completion_append_character;
1.76 christos 1861: buf[1] = '\0';
1.56 christos 1862: return buf;
1863: }
1864:
1.11 lukem 1865:
1.1 christos 1866: /*
1.141 abhinav 1867: * Display list of strings in columnar format on readline's output stream.
1868: * 'matches' is list of strings, 'len' is number of strings in 'matches',
1869: * 'max' is maximum length of string in 'matches'.
1870: */
1871: void
1872: rl_display_match_list(char **matches, int len, int max)
1873: {
1874:
1875: fn_display_match_list(e, matches, (size_t)len, (size_t)max,
1876: _rl_completion_append_character_function);
1877: }
1878:
1879: /*
1.1 christos 1880: * complete word at current point
1881: */
1.53 dsl 1882: /* ARGSUSED */
1.1 christos 1883: int
1.53 dsl 1884: rl_complete(int ignore __attribute__((__unused__)), int invoking_key)
1.1 christos 1885: {
1.86 christos 1886: static ct_buffer_t wbreak_conv, sprefix_conv;
1.102 christos 1887: char *breakchars;
1.86 christos 1888:
1.1 christos 1889: if (h == NULL || e == NULL)
1890: rl_initialize();
1891:
1892: if (rl_inhibit_completion) {
1.47 christos 1893: char arr[2];
1894: arr[0] = (char)invoking_key;
1895: arr[1] = '\0';
1896: el_insertstr(e, arr);
1.96 christos 1897: return CC_REFRESH;
1.53 dsl 1898: }
1899:
1.102 christos 1900: if (rl_completion_word_break_hook != NULL)
1901: breakchars = (*rl_completion_word_break_hook)();
1902: else
1903: breakchars = rl_basic_word_break_characters;
1904:
1.116 christos 1905: _rl_update_pos();
1906:
1.53 dsl 1907: /* Just look at how many global variables modify this operation! */
1908: return fn_complete(e,
1.117 christos 1909: (rl_compentry_func_t *)rl_completion_entry_function,
1.53 dsl 1910: rl_attempted_completion_function,
1.86 christos 1911: ct_decode_string(rl_basic_word_break_characters, &wbreak_conv),
1.102 christos 1912: ct_decode_string(breakchars, &sprefix_conv),
1.81 christos 1913: _rl_completion_append_character_function,
1914: (size_t)rl_completion_query_items,
1.53 dsl 1915: &rl_completion_type, &rl_attempted_completion_over,
1916: &rl_point, &rl_end);
1.92 christos 1917:
1918:
1.1 christos 1919: }
1920:
1.11 lukem 1921:
1.53 dsl 1922: /* ARGSUSED */
1923: static unsigned char
1924: _el_rl_complete(EditLine *el __attribute__((__unused__)), int ch)
1925: {
1926: return (unsigned char)rl_complete(0, ch);
1927: }
1928:
1.1 christos 1929: /*
1.7 simonb 1930: * misc other functions
1.1 christos 1931: */
1932:
1933: /*
1934: * bind key c to readline-type function func
1935: */
1936: int
1.85 christos 1937: rl_bind_key(int c, rl_command_func_t *func)
1.1 christos 1938: {
1.11 lukem 1939: int retval = -1;
1.1 christos 1940:
1941: if (h == NULL || e == NULL)
1942: rl_initialize();
1943:
1944: if (func == rl_insert) {
1945: /* XXX notice there is no range checking of ``c'' */
1946: e->el_map.key[c] = ED_INSERT;
1947: retval = 0;
1948: }
1.96 christos 1949: return retval;
1.1 christos 1950: }
1951:
1.11 lukem 1952:
1.1 christos 1953: /*
1954: * read one key from input - handles chars pushed back
1955: * to input stream also
1956: */
1957: int
1.11 lukem 1958: rl_read_key(void)
1.1 christos 1959: {
1.11 lukem 1960: char fooarr[2 * sizeof(int)];
1.1 christos 1961:
1962: if (e == NULL || h == NULL)
1963: rl_initialize();
1964:
1.96 christos 1965: return el_getc(e, fooarr);
1.1 christos 1966: }
1967:
1.11 lukem 1968:
1.1 christos 1969: /*
1970: * reset the terminal
1971: */
1.5 christos 1972: /* ARGSUSED */
1.1 christos 1973: void
1.30 christos 1974: rl_reset_terminal(const char *p __attribute__((__unused__)))
1.1 christos 1975: {
1.11 lukem 1976:
1.1 christos 1977: if (h == NULL || e == NULL)
1978: rl_initialize();
1979: el_reset(e);
1980: }
1981:
1.11 lukem 1982:
1.1 christos 1983: /*
1984: * insert character ``c'' back into input stream, ``count'' times
1985: */
1986: int
1.11 lukem 1987: rl_insert(int count, int c)
1.1 christos 1988: {
1.11 lukem 1989: char arr[2];
1.1 christos 1990:
1991: if (h == NULL || e == NULL)
1992: rl_initialize();
1993:
1994: /* XXX - int -> char conversion can lose on multichars */
1.99 christos 1995: arr[0] = (char)c;
1.1 christos 1996: arr[1] = '\0';
1997:
1998: for (; count > 0; count--)
1999: el_push(e, arr);
2000:
1.96 christos 2001: return 0;
1.35 christos 2002: }
2003:
1.85 christos 2004: int
2005: rl_insert_text(const char *text)
2006: {
2007: if (!text || *text == 0)
1.96 christos 2008: return 0;
1.85 christos 2009:
2010: if (h == NULL || e == NULL)
2011: rl_initialize();
2012:
2013: if (el_insertstr(e, text) < 0)
1.96 christos 2014: return 0;
1.85 christos 2015: return (int)strlen(text);
2016: }
2017:
1.35 christos 2018: /*ARGSUSED*/
2019: int
1.97 christos 2020: rl_newline(int count __attribute__((__unused__)),
2021: int c __attribute__((__unused__)))
1.35 christos 2022: {
2023: /*
2024: * Readline-4.0 appears to ignore the args.
2025: */
2026: return rl_insert(1, '\n');
2027: }
2028:
2029: /*ARGSUSED*/
2030: static unsigned char
1.97 christos 2031: rl_bind_wrapper(EditLine *el __attribute__((__unused__)), unsigned char c)
1.35 christos 2032: {
2033: if (map[c] == NULL)
2034: return CC_ERROR;
1.49 christos 2035:
2036: _rl_update_pos();
2037:
1.116 christos 2038: (*map[c])(1, c);
1.38 christos 2039:
2040: /* If rl_done was set by the above call, deal with it here */
2041: if (rl_done)
2042: return CC_EOF;
2043:
1.35 christos 2044: return CC_NORM;
2045: }
2046:
2047: int
1.116 christos 2048: rl_add_defun(const char *name, rl_command_func_t *fun, int c)
1.35 christos 2049: {
2050: char dest[8];
1.77 lukem 2051: if ((size_t)c >= sizeof(map) / sizeof(map[0]) || c < 0)
1.35 christos 2052: return -1;
2053: map[(unsigned char)c] = fun;
2054: el_set(e, EL_ADDFN, name, name, rl_bind_wrapper);
1.37 christos 2055: vis(dest, c, VIS_WHITE|VIS_NOSLASH, 0);
1.106 christos 2056: el_set(e, EL_BIND, dest, name, NULL);
1.35 christos 2057: return 0;
2058: }
2059:
2060: void
1.101 matt 2061: rl_callback_read_char(void)
1.35 christos 2062: {
1.36 christos 2063: int count = 0, done = 0;
1.35 christos 2064: const char *buf = el_gets(e, &count);
2065: char *wbuf;
2066:
2067: if (buf == NULL || count-- <= 0)
2068: return;
1.61 christos 2069: if (count == 0 && buf[0] == e->el_tty.t_c[TS_IO][C_EOF])
1.36 christos 2070: done = 1;
2071: if (buf[count] == '\n' || buf[count] == '\r')
2072: done = 2;
2073:
2074: if (done && rl_linefunc != NULL) {
1.35 christos 2075: el_set(e, EL_UNBUFFERED, 0);
1.36 christos 2076: if (done == 2) {
1.146.2.1! pgoyette 2077: if ((wbuf = strdup(buf)) != NULL)
! 2078: wbuf[count] = '\0';
1.36 christos 2079: } else
2080: wbuf = NULL;
1.35 christos 2081: (*(void (*)(const char *))rl_linefunc)(wbuf);
1.146.2.1! pgoyette 2082: el_set(e, EL_UNBUFFERED, 1);
1.35 christos 2083: }
2084: }
2085:
1.125 christos 2086: void
1.117 christos 2087: rl_callback_handler_install(const char *prompt, rl_vcpfunc_t *linefunc)
1.35 christos 2088: {
2089: if (e == NULL) {
2090: rl_initialize();
2091: }
1.78 christos 2092: (void)rl_set_prompt(prompt);
1.35 christos 2093: rl_linefunc = linefunc;
2094: el_set(e, EL_UNBUFFERED, 1);
1.125 christos 2095: }
1.35 christos 2096:
1.125 christos 2097: void
1.35 christos 2098: rl_callback_handler_remove(void)
2099: {
1.72 christos 2100: rl_linefunc = NULL;
1.142 christos 2101: el_end(e);
2102: e = NULL;
1.35 christos 2103: }
2104:
2105: void
2106: rl_redisplay(void)
2107: {
2108: char a[2];
1.99 christos 2109: a[0] = (char)e->el_tty.t_c[TS_IO][C_REPRINT];
1.35 christos 2110: a[1] = '\0';
2111: el_push(e, a);
2112: }
2113:
2114: int
2115: rl_get_previous_history(int count, int key)
2116: {
2117: char a[2];
1.99 christos 2118: a[0] = (char)key;
1.35 christos 2119: a[1] = '\0';
2120: while (count--)
2121: el_push(e, a);
2122: return 0;
1.38 christos 2123: }
2124:
2125: void
2126: /*ARGSUSED*/
1.97 christos 2127: rl_prep_terminal(int meta_flag __attribute__((__unused__)))
1.38 christos 2128: {
2129: el_set(e, EL_PREP_TERM, 1);
2130: }
2131:
2132: void
1.68 christos 2133: rl_deprep_terminal(void)
1.38 christos 2134: {
2135: el_set(e, EL_PREP_TERM, 0);
2136: }
2137:
2138: int
2139: rl_read_init_file(const char *s)
2140: {
1.96 christos 2141: return el_source(e, s);
1.38 christos 2142: }
2143:
2144: int
2145: rl_parse_and_bind(const char *line)
2146: {
2147: const char **argv;
2148: int argc;
2149: Tokenizer *tok;
2150:
2151: tok = tok_init(NULL);
1.44 lukem 2152: tok_str(tok, line, &argc, &argv);
1.38 christos 2153: argc = el_parse(e, argc, argv);
2154: tok_end(tok);
1.96 christos 2155: return argc ? 1 : 0;
1.38 christos 2156: }
2157:
1.51 christos 2158: int
2159: rl_variable_bind(const char *var, const char *value)
2160: {
2161: /*
2162: * The proper return value is undocument, but this is what the
2163: * readline source seems to do.
2164: */
1.106 christos 2165: return el_set(e, EL_BIND, "", var, value, NULL) == -1 ? 1 : 0;
1.51 christos 2166: }
2167:
1.38 christos 2168: void
2169: rl_stuff_char(int c)
2170: {
2171: char buf[2];
2172:
1.99 christos 2173: buf[0] = (char)c;
1.38 christos 2174: buf[1] = '\0';
2175: el_insertstr(e, buf);
2176: }
2177:
2178: static int
1.126 christos 2179: _rl_event_read_char(EditLine *el, wchar_t *wc)
1.38 christos 2180: {
1.126 christos 2181: char ch;
1.80 christos 2182: int n;
2183: ssize_t num_read = 0;
1.38 christos 2184:
1.126 christos 2185: ch = '\0';
2186: *wc = L'\0';
1.38 christos 2187: while (rl_event_hook) {
2188:
2189: (*rl_event_hook)();
2190:
2191: #if defined(FIONREAD)
2192: if (ioctl(el->el_infd, FIONREAD, &n) < 0)
1.96 christos 2193: return -1;
1.38 christos 2194: if (n)
1.126 christos 2195: num_read = read(el->el_infd, &ch, (size_t)1);
1.38 christos 2196: else
2197: num_read = 0;
2198: #elif defined(F_SETFL) && defined(O_NDELAY)
2199: if ((n = fcntl(el->el_infd, F_GETFL, 0)) < 0)
1.96 christos 2200: return -1;
1.38 christos 2201: if (fcntl(el->el_infd, F_SETFL, n|O_NDELAY) < 0)
1.96 christos 2202: return -1;
1.126 christos 2203: num_read = read(el->el_infd, &ch, 1);
1.38 christos 2204: if (fcntl(el->el_infd, F_SETFL, n))
1.96 christos 2205: return -1;
1.38 christos 2206: #else
2207: /* not non-blocking, but what you gonna do? */
1.126 christos 2208: num_read = read(el->el_infd, &ch, 1);
1.96 christos 2209: return -1;
1.38 christos 2210: #endif
2211:
2212: if (num_read < 0 && errno == EAGAIN)
2213: continue;
2214: if (num_read == 0)
2215: continue;
2216: break;
2217: }
2218: if (!rl_event_hook)
2219: el_set(el, EL_GETCFN, EL_BUILTIN_GETCFN);
1.126 christos 2220: *wc = (wchar_t)ch;
1.80 christos 2221: return (int)num_read;
1.1 christos 2222: }
1.49 christos 2223:
2224: static void
2225: _rl_update_pos(void)
2226: {
2227: const LineInfo *li = el_line(e);
2228:
1.80 christos 2229: rl_point = (int)(li->cursor - li->buffer);
2230: rl_end = (int)(li->lastchar - li->buffer);
1.49 christos 2231: }
1.70 christos 2232:
2233: void
2234: rl_get_screen_size(int *rows, int *cols)
2235: {
2236: if (rows)
1.107 christos 2237: el_get(e, EL_GETTC, "li", rows, (void *)0);
1.70 christos 2238: if (cols)
1.107 christos 2239: el_get(e, EL_GETTC, "co", cols, (void *)0);
1.70 christos 2240: }
2241:
2242: void
2243: rl_set_screen_size(int rows, int cols)
2244: {
2245: char buf[64];
2246: (void)snprintf(buf, sizeof(buf), "%d", rows);
1.106 christos 2247: el_set(e, EL_SETTC, "li", buf, NULL);
1.70 christos 2248: (void)snprintf(buf, sizeof(buf), "%d", cols);
1.106 christos 2249: el_set(e, EL_SETTC, "co", buf, NULL);
1.70 christos 2250: }
2251:
1.71 christos 2252: char **
2253: rl_completion_matches(const char *str, rl_compentry_func_t *fun)
2254: {
2255: size_t len, max, i, j, min;
2256: char **list, *match, *a, *b;
2257:
2258: len = 1;
2259: max = 10;
1.95 christos 2260: if ((list = el_malloc(max * sizeof(*list))) == NULL)
1.71 christos 2261: return NULL;
2262:
2263: while ((match = (*fun)(str, (int)(len - 1))) != NULL) {
1.83 christos 2264: list[len++] = match;
1.71 christos 2265: if (len == max) {
2266: char **nl;
2267: max += 10;
1.95 christos 2268: if ((nl = el_realloc(list, max * sizeof(*nl))) == NULL)
1.71 christos 2269: goto out;
2270: list = nl;
2271: }
2272: }
2273: if (len == 1)
2274: goto out;
2275: list[len] = NULL;
2276: if (len == 2) {
2277: if ((list[0] = strdup(list[1])) == NULL)
2278: goto out;
2279: return list;
2280: }
2281: qsort(&list[1], len - 1, sizeof(*list),
2282: (int (*)(const void *, const void *)) strcmp);
1.119 christos 2283: min = SIZE_MAX;
1.71 christos 2284: for (i = 1, a = list[i]; i < len - 1; i++, a = b) {
2285: b = list[i + 1];
2286: for (j = 0; a[j] && a[j] == b[j]; j++)
2287: continue;
2288: if (min > j)
2289: min = j;
2290: }
2291: if (min == 0 && *str) {
2292: if ((list[0] = strdup(str)) == NULL)
2293: goto out;
2294: } else {
1.95 christos 2295: if ((list[0] = el_malloc((min + 1) * sizeof(*list[0]))) == NULL)
1.71 christos 2296: goto out;
2297: (void)memcpy(list[0], list[1], min);
2298: list[0][min] = '\0';
2299: }
2300: return list;
1.125 christos 2301:
1.71 christos 2302: out:
1.95 christos 2303: el_free(list);
1.71 christos 2304: return NULL;
2305: }
2306:
1.70 christos 2307: char *
2308: rl_filename_completion_function (const char *text, int state)
2309: {
2310: return fn_filename_completion_function(text, state);
2311: }
2312:
1.73 christos 2313: void
2314: rl_forced_update_display(void)
2315: {
1.74 christos 2316: el_set(e, EL_REFRESH);
1.73 christos 2317: }
2318:
1.70 christos 2319: int
2320: _rl_abort_internal(void)
2321: {
2322: el_beep(e);
2323: longjmp(topbuf, 1);
2324: /*NOTREACHED*/
2325: }
2326:
2327: int
2328: _rl_qsort_string_compare(char **s1, char **s2)
2329: {
2330: return strcoll(*s1, *s2);
2331: }
2332:
1.85 christos 2333: HISTORY_STATE *
2334: history_get_history_state(void)
2335: {
2336: HISTORY_STATE *hs;
2337:
1.95 christos 2338: if ((hs = el_malloc(sizeof(*hs))) == NULL)
1.96 christos 2339: return NULL;
1.85 christos 2340: hs->length = history_length;
1.96 christos 2341: return hs;
1.85 christos 2342: }
2343:
1.70 christos 2344: int
2345: /*ARGSUSED*/
1.97 christos 2346: rl_kill_text(int from __attribute__((__unused__)),
2347: int to __attribute__((__unused__)))
1.70 christos 2348: {
2349: return 0;
2350: }
2351:
2352: Keymap
2353: rl_make_bare_keymap(void)
2354: {
2355: return NULL;
2356: }
2357:
2358: Keymap
2359: rl_get_keymap(void)
2360: {
2361: return NULL;
2362: }
2363:
2364: void
2365: /*ARGSUSED*/
1.97 christos 2366: rl_set_keymap(Keymap k __attribute__((__unused__)))
1.70 christos 2367: {
2368: }
2369:
2370: int
2371: /*ARGSUSED*/
1.97 christos 2372: rl_generic_bind(int type __attribute__((__unused__)),
2373: const char * keyseq __attribute__((__unused__)),
2374: const char * data __attribute__((__unused__)),
2375: Keymap k __attribute__((__unused__)))
1.70 christos 2376: {
2377: return 0;
2378: }
2379:
2380: int
2381: /*ARGSUSED*/
1.97 christos 2382: rl_bind_key_in_map(int key __attribute__((__unused__)),
2383: rl_command_func_t *fun __attribute__((__unused__)),
2384: Keymap k __attribute__((__unused__)))
1.70 christos 2385: {
2386: return 0;
2387: }
1.85 christos 2388:
2389: /* unsupported, but needed by python */
2390: void
2391: rl_cleanup_after_signal(void)
2392: {
2393: }
1.90 christos 2394:
2395: int
2396: rl_on_new_line(void)
2397: {
2398: return 0;
2399: }
1.105 christos 2400:
2401: void
2402: rl_free_line_state(void)
2403: {
2404: }
1.118 christos 2405:
2406: int
2407: /*ARGSUSED*/
1.120 christos 2408: rl_set_keyboard_input_timeout(int u __attribute__((__unused__)))
1.118 christos 2409: {
2410: return 0;
2411: }
1.142 christos 2412:
2413: void
2414: rl_resize_terminal(void)
2415: {
2416: el_resize(e);
2417: }
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