Annotation of src/lib/libedit/readline.c, Revision 1.142
1.142 ! christos 1: /* $NetBSD: readline.c,v 1.141 2017/04/21 05:38:03 abhinav 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)
1.142 ! christos 34: __RCSID("$NetBSD: readline.c,v 1.141 2017/04/21 05:38:03 abhinav Exp $");
1.1 christos 35: #endif /* not lint && not SCCSID */
36:
37: #include <sys/types.h>
38: #include <sys/stat.h>
1.125 christos 39: #include <ctype.h>
1.1 christos 40: #include <dirent.h>
1.125 christos 41: #include <errno.h>
42: #include <fcntl.h>
43: #include <limits.h>
1.1 christos 44: #include <pwd.h>
1.125 christos 45: #include <setjmp.h>
46: #include <stdint.h>
47: #include <stdio.h>
1.1 christos 48: #include <stdlib.h>
1.125 christos 49: #include <string.h>
1.1 christos 50: #include <unistd.h>
1.35 christos 51: #include <vis.h>
1.97 christos 52:
1.79 sketch 53: #include "readline/readline.h"
1.45 christos 54: #include "el.h"
1.128 christos 55: #include "fcns.h"
1.53 dsl 56: #include "filecomplete.h"
1.1 christos 57:
1.68 christos 58: void rl_prep_terminal(int);
59: void rl_deprep_terminal(void);
60:
1.1 christos 61: /* for rl_complete() */
1.40 christos 62: #define TAB '\r'
1.1 christos 63:
64: /* see comment at the #ifdef for sense of this */
1.40 christos 65: /* #define GDB_411_HACK */
1.1 christos 66:
67: /* readline compatibility stuff - look at readline sources/documentation */
68: /* to see what these variables mean */
1.11 lukem 69: const char *rl_library_version = "EditLine wrapper";
1.85 christos 70: int rl_readline_version = RL_READLINE_VERSION;
1.20 christos 71: static char empty[] = { '\0' };
72: static char expand_chars[] = { ' ', '\t', '\n', '=', '(', '\0' };
73: static char break_chars[] = { ' ', '\t', '\n', '"', '\\', '\'', '`', '@', '$',
74: '>', '<', '=', ';', '|', '&', '{', '(', '\0' };
75: char *rl_readline_name = empty;
1.11 lukem 76: FILE *rl_instream = NULL;
77: FILE *rl_outstream = NULL;
78: int rl_point = 0;
79: int rl_end = 0;
80: char *rl_line_buffer = NULL;
1.117 christos 81: rl_vcpfunc_t *rl_linefunc = NULL;
1.38 christos 82: int rl_done = 0;
83: VFunction *rl_event_hook = NULL;
1.70 christos 84: KEYMAP_ENTRY_ARRAY emacs_standard_keymap,
85: emacs_meta_keymap,
86: emacs_ctlx_keymap;
1.108 christos 87: /*
88: * The following is not implemented; we always catch signals in the
89: * libedit fashion: set handlers on entry to el_gets() and clear them
90: * on the way out. This simplistic approach works for most cases; if
91: * it does not work for your application, please let us know.
92: */
93: int rl_catch_signals = 1;
94: int rl_catch_sigwinch = 1;
1.11 lukem 95:
96: int history_base = 1; /* probably never subject to change */
97: int history_length = 0;
1.137 christos 98: int history_offset = 0;
1.11 lukem 99: int max_input_history = 0;
100: char history_expansion_char = '!';
101: char history_subst_char = '^';
1.20 christos 102: char *history_no_expand_chars = expand_chars;
1.11 lukem 103: Function *history_inhibit_expansion_function = NULL;
1.40 christos 104: char *history_arg_extract(int start, int end, const char *str);
1.11 lukem 105:
106: int rl_inhibit_completion = 0;
107: int rl_attempted_completion_over = 0;
1.20 christos 108: char *rl_basic_word_break_characters = break_chars;
1.11 lukem 109: char *rl_completer_word_break_characters = NULL;
110: char *rl_completer_quote_characters = NULL;
1.117 christos 111: rl_compentry_func_t *rl_completion_entry_function = NULL;
1.103 christos 112: char *(*rl_completion_word_break_hook)(void) = NULL;
1.117 christos 113: rl_completion_func_t *rl_attempted_completion_function = NULL;
1.32 christos 114: Function *rl_pre_input_hook = NULL;
115: Function *rl_startup1_hook = NULL;
1.72 christos 116: int (*rl_getc_function)(FILE *) = NULL;
1.32 christos 117: char *rl_terminal_name = NULL;
118: int rl_already_prompted = 0;
119: int rl_filename_completion_desired = 0;
120: int rl_ignore_completion_duplicates = 0;
1.70 christos 121: int readline_echoing_p = 1;
122: int _rl_print_completions_horizontally = 0;
1.32 christos 123: VFunction *rl_redisplay_function = NULL;
1.33 christos 124: Function *rl_startup_hook = NULL;
1.142 ! 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:
1.4 christos 293: e = el_init(rl_readline_name, rl_instream, rl_outstream, stderr);
1.18 christos 294:
295: if (!editmode)
1.92 christos 296: el_set(e, EL_EDITMODE, 0);
1.1 christos 297:
1.92 christos 298: h = history_init();
1.1 christos 299: if (!e || !h)
1.96 christos 300: return -1;
1.1 christos 301:
1.92 christos 302: history(h, &ev, H_SETSIZE, INT_MAX); /* unlimited */
1.1 christos 303: history_length = 0;
304: max_input_history = INT_MAX;
305: el_set(e, EL_HIST, history, h);
306:
1.91 christos 307: /* Setup resize function */
308: el_set(e, EL_RESIZE, _resize_fun, &rl_line_buffer);
309:
1.59 christos 310: /* setup getc function if valid */
311: if (rl_getc_function)
312: el_set(e, EL_GETCFN, _getc_function);
313:
1.1 christos 314: /* for proper prompt printing in readline() */
1.78 christos 315: if (rl_set_prompt("") == -1) {
1.92 christos 316: history_end(h);
1.23 christos 317: el_end(e);
318: return -1;
319: }
1.82 christos 320: el_set(e, EL_PROMPT, _get_prompt, RL_PROMPT_START_IGNORE);
1.39 christos 321: el_set(e, EL_SIGNAL, rl_catch_signals);
1.1 christos 322:
323: /* set default mode to "emacs"-style and read setting afterwards */
1.112 christos 324: /* so this can be overridden */
1.1 christos 325: el_set(e, EL_EDITOR, "emacs");
1.32 christos 326: if (rl_terminal_name != NULL)
327: el_set(e, EL_TERMINAL, rl_terminal_name);
328: else
329: el_get(e, EL_TERMINAL, &rl_terminal_name);
1.1 christos 330:
1.12 jdolecek 331: /*
1.35 christos 332: * Word completion - this has to go AFTER rebinding keys
1.12 jdolecek 333: * to emacs-style.
334: */
1.1 christos 335: el_set(e, EL_ADDFN, "rl_complete",
1.35 christos 336: "ReadLine compatible completion function",
1.11 lukem 337: _el_rl_complete);
1.1 christos 338: el_set(e, EL_BIND, "^I", "rl_complete", NULL);
1.46 christos 339:
340: /*
341: * Send TSTP when ^Z is pressed.
342: */
343: el_set(e, EL_ADDFN, "rl_tstp",
344: "ReadLine compatible suspend function",
345: _el_rl_tstp);
346: el_set(e, EL_BIND, "^Z", "rl_tstp", NULL);
1.125 christos 347:
1.114 christos 348: /*
349: * Set some readline compatible key-bindings.
350: */
351: el_set(e, EL_BIND, "^R", "em-inc-search-prev", NULL);
352:
353: /*
354: * Allow the use of Home/End keys.
355: */
356: el_set(e, EL_BIND, "\\e[1~", "ed-move-to-beg", NULL);
357: el_set(e, EL_BIND, "\\e[4~", "ed-move-to-end", NULL);
358: el_set(e, EL_BIND, "\\e[7~", "ed-move-to-beg", NULL);
359: el_set(e, EL_BIND, "\\e[8~", "ed-move-to-end", NULL);
360: el_set(e, EL_BIND, "\\e[H", "ed-move-to-beg", NULL);
361: el_set(e, EL_BIND, "\\e[F", "ed-move-to-end", NULL);
362:
363: /*
364: * Allow the use of the Delete/Insert keys.
365: */
366: el_set(e, EL_BIND, "\\e[3~", "ed-delete-next-char", NULL);
367: el_set(e, EL_BIND, "\\e[2~", "ed-quoted-insert", NULL);
368:
369: /*
370: * Ctrl-left-arrow and Ctrl-right-arrow for word moving.
371: */
372: el_set(e, EL_BIND, "\\e[1;5C", "em-next-word", NULL);
373: el_set(e, EL_BIND, "\\e[1;5D", "ed-prev-word", NULL);
374: el_set(e, EL_BIND, "\\e[5C", "em-next-word", NULL);
1.138 mbalmer 375: el_set(e, EL_BIND, "\\e[5D", "ed-prev-word", NULL);
1.114 christos 376: el_set(e, EL_BIND, "\\e\\e[C", "em-next-word", NULL);
377: el_set(e, EL_BIND, "\\e\\e[D", "ed-prev-word", NULL);
378:
1.1 christos 379: /* read settings from configuration file */
380: el_source(e, NULL);
381:
1.12 jdolecek 382: /*
383: * Unfortunately, some applications really do use rl_point
384: * and rl_line_buffer directly.
385: */
1.91 christos 386: _resize_fun(e, &rl_line_buffer);
1.49 christos 387: _rl_update_pos();
1.1 christos 388:
1.96 christos 389: return 0;
1.1 christos 390: }
391:
1.11 lukem 392:
1.1 christos 393: /*
394: * read one line from input stream and return it, chomping
395: * trailing newline (if there is any)
396: */
397: char *
1.70 christos 398: readline(const char *p)
1.1 christos 399: {
1.92 christos 400: HistEvent ev;
1.70 christos 401: const char * volatile prompt = p;
1.3 thorpej 402: int count;
1.1 christos 403: const char *ret;
1.20 christos 404: char *buf;
1.38 christos 405: static int used_event_hook;
1.1 christos 406:
407: if (e == NULL || h == NULL)
408: rl_initialize();
1.142 ! christos 409: if (rl_did_startup_hook == 0 && rl_startup_hook) {
! 410: rl_did_startup_hook = 1;
! 411: (*rl_startup_hook)(NULL, 0);
! 412: }
! 413:
1.1 christos 414:
1.38 christos 415: rl_done = 0;
416:
1.70 christos 417: (void)setjmp(topbuf);
418:
1.9 jdolecek 419: /* update prompt accordingly to what has been passed */
1.78 christos 420: if (rl_set_prompt(prompt) == -1)
421: return NULL;
1.32 christos 422:
423: if (rl_pre_input_hook)
424: (*rl_pre_input_hook)(NULL, 0);
425:
1.38 christos 426: if (rl_event_hook && !(e->el_flags&NO_TTY)) {
427: el_set(e, EL_GETCFN, _rl_event_read_char);
428: used_event_hook = 1;
429: }
430:
431: if (!rl_event_hook && used_event_hook) {
432: el_set(e, EL_GETCFN, EL_BUILTIN_GETCFN);
433: used_event_hook = 0;
434: }
435:
1.32 christos 436: rl_already_prompted = 0;
437:
1.1 christos 438: /* get one line from input stream */
439: ret = el_gets(e, &count);
440:
441: if (ret && count > 0) {
1.5 christos 442: int lastidx;
1.1 christos 443:
1.20 christos 444: buf = strdup(ret);
1.23 christos 445: if (buf == NULL)
446: return NULL;
1.1 christos 447: lastidx = count - 1;
1.20 christos 448: if (buf[lastidx] == '\n')
449: buf[lastidx] = '\0';
1.1 christos 450: } else
1.20 christos 451: buf = NULL;
1.1 christos 452:
1.92 christos 453: history(h, &ev, H_GETSIZE);
1.1 christos 454: history_length = ev.num;
455:
1.20 christos 456: return buf;
1.1 christos 457: }
458:
459: /*
460: * history functions
461: */
462:
463: /*
464: * is normally called before application starts to use
465: * history expansion functions
466: */
467: void
1.11 lukem 468: using_history(void)
1.1 christos 469: {
470: if (h == NULL || e == NULL)
471: rl_initialize();
1.137 christos 472: history_offset = history_length;
1.1 christos 473: }
474:
1.11 lukem 475:
1.1 christos 476: /*
477: * substitute ``what'' with ``with'', returning resulting string; if
1.29 wiz 478: * globally == 1, substitutes all occurrences of what, otherwise only the
1.1 christos 479: * first one
480: */
1.11 lukem 481: static char *
482: _rl_compat_sub(const char *str, const char *what, const char *with,
483: int globally)
484: {
1.40 christos 485: const char *s;
486: char *r, *result;
487: size_t len, with_len, what_len;
1.1 christos 488:
1.40 christos 489: len = strlen(str);
490: with_len = strlen(with);
491: what_len = strlen(what);
492:
493: /* calculate length we need for result */
494: s = str;
495: while (*s) {
496: if (*s == *what && !strncmp(s, what, what_len)) {
497: len += with_len - what_len;
498: if (!globally)
499: break;
500: s += what_len;
501: } else
502: s++;
503: }
1.95 christos 504: r = result = el_malloc((len + 1) * sizeof(*r));
1.23 christos 505: if (result == NULL)
506: return NULL;
1.40 christos 507: s = str;
508: while (*s) {
509: if (*s == *what && !strncmp(s, what, what_len)) {
510: (void)strncpy(r, with, with_len);
511: r += with_len;
512: s += what_len;
513: if (!globally) {
514: (void)strcpy(r, s);
1.96 christos 515: return result;
1.1 christos 516: }
1.40 christos 517: } else
518: *r++ = *s++;
519: }
1.76 christos 520: *r = '\0';
1.96 christos 521: return result;
1.40 christos 522: }
523:
524: static char *last_search_pat; /* last !?pat[?] search pattern */
525: static char *last_search_match; /* last !?pat[?] that matched */
526:
527: const char *
528: get_history_event(const char *cmd, int *cindex, int qchar)
529: {
530: int idx, sign, sub, num, begin, ret;
531: size_t len;
532: char *pat;
533: const char *rptr;
1.92 christos 534: HistEvent ev;
1.40 christos 535:
536: idx = *cindex;
537: if (cmd[idx++] != history_expansion_char)
1.96 christos 538: return NULL;
1.40 christos 539:
540: /* find out which event to take */
1.76 christos 541: if (cmd[idx] == history_expansion_char || cmd[idx] == '\0') {
1.92 christos 542: if (history(h, &ev, H_FIRST) != 0)
1.96 christos 543: return NULL;
1.40 christos 544: *cindex = cmd[idx]? (idx + 1):idx;
1.92 christos 545: return ev.str;
1.40 christos 546: }
547: sign = 0;
548: if (cmd[idx] == '-') {
549: sign = 1;
550: idx++;
551: }
552:
553: if ('0' <= cmd[idx] && cmd[idx] <= '9') {
1.137 christos 554: HIST_ENTRY *he;
1.40 christos 555:
556: num = 0;
557: while (cmd[idx] && '0' <= cmd[idx] && cmd[idx] <= '9') {
558: num = num * 10 + cmd[idx] - '0';
559: idx++;
560: }
561: if (sign)
1.140 christos 562: num = history_length - num + history_base;
1.40 christos 563:
1.137 christos 564: if (!(he = history_get(num)))
1.96 christos 565: return NULL;
1.40 christos 566:
567: *cindex = idx;
1.137 christos 568: return he->line;
1.40 christos 569: }
570: sub = 0;
571: if (cmd[idx] == '?') {
572: sub = 1;
573: idx++;
574: }
575: begin = idx;
576: while (cmd[idx]) {
577: if (cmd[idx] == '\n')
578: break;
579: if (sub && cmd[idx] == '?')
580: break;
581: if (!sub && (cmd[idx] == ':' || cmd[idx] == ' '
582: || cmd[idx] == '\t' || cmd[idx] == qchar))
583: break;
584: idx++;
585: }
1.99 christos 586: len = (size_t)idx - (size_t)begin;
1.40 christos 587: if (sub && cmd[idx] == '?')
588: idx++;
589: if (sub && len == 0 && last_search_pat && *last_search_pat)
590: pat = last_search_pat;
591: else if (len == 0)
1.96 christos 592: return NULL;
1.40 christos 593: else {
1.95 christos 594: if ((pat = el_malloc((len + 1) * sizeof(*pat))) == NULL)
1.40 christos 595: return NULL;
596: (void)strncpy(pat, cmd + begin, len);
597: pat[len] = '\0';
598: }
599:
1.92 christos 600: if (history(h, &ev, H_CURR) != 0) {
1.40 christos 601: if (pat != last_search_pat)
1.95 christos 602: el_free(pat);
1.96 christos 603: return NULL;
1.40 christos 604: }
605: num = ev.num;
606:
607: if (sub) {
608: if (pat != last_search_pat) {
609: if (last_search_pat)
1.95 christos 610: el_free(last_search_pat);
1.40 christos 611: last_search_pat = pat;
1.1 christos 612: }
1.40 christos 613: ret = history_search(pat, -1);
614: } else
615: ret = history_search_prefix(pat, -1);
616:
617: if (ret == -1) {
618: /* restore to end of list on failed search */
1.92 christos 619: history(h, &ev, H_FIRST);
1.40 christos 620: (void)fprintf(rl_outstream, "%s: Event not found\n", pat);
621: if (pat != last_search_pat)
1.95 christos 622: el_free(pat);
1.96 christos 623: return NULL;
1.40 christos 624: }
625:
626: if (sub && len) {
627: if (last_search_match && last_search_match != pat)
1.95 christos 628: el_free(last_search_match);
1.40 christos 629: last_search_match = pat;
630: }
631:
632: if (pat != last_search_pat)
1.95 christos 633: el_free(pat);
1.40 christos 634:
1.92 christos 635: if (history(h, &ev, H_CURR) != 0)
1.96 christos 636: return NULL;
1.40 christos 637: *cindex = idx;
1.92 christos 638: rptr = ev.str;
1.40 christos 639:
640: /* roll back to original position */
1.92 christos 641: (void)history(h, &ev, H_SET, num);
1.1 christos 642:
1.40 christos 643: return rptr;
1.1 christos 644: }
645:
646: /*
647: * the real function doing history expansion - takes as argument command
648: * to do and data upon which the command should be executed
649: * does expansion the way I've understood readline documentation
650: *
651: * returns 0 if data was not modified, 1 if it was and 2 if the string
652: * should be only printed and not executed; in case of error,
653: * returns -1 and *result points to NULL
1.113 snj 654: * it's the caller's responsibility to free() the string returned in *result
1.1 christos 655: */
656: static int
1.40 christos 657: _history_expand_command(const char *command, size_t offs, size_t cmdlen,
658: char **result)
1.11 lukem 659: {
1.40 christos 660: char *tmp, *search = NULL, *aptr;
661: const char *ptr, *cmd;
1.11 lukem 662: static char *from = NULL, *to = NULL;
1.40 christos 663: int start, end, idx, has_mods = 0;
664: int p_on = 0, g_on = 0;
1.1 christos 665:
666: *result = NULL;
1.40 christos 667: aptr = NULL;
1.41 christos 668: ptr = NULL;
1.1 christos 669:
1.40 christos 670: /* First get event specifier */
671: idx = 0;
1.1 christos 672:
1.40 christos 673: if (strchr(":^*$", command[offs + 1])) {
674: char str[4];
675: /*
676: * "!:" is shorthand for "!!:".
677: * "!^", "!*" and "!$" are shorthand for
678: * "!!:^", "!!:*" and "!!:$" respectively.
679: */
680: str[0] = str[1] = '!';
681: str[2] = '0';
682: ptr = get_history_event(str, &idx, 0);
683: idx = (command[offs + 1] == ':')? 1:0;
684: has_mods = 1;
1.1 christos 685: } else {
1.40 christos 686: if (command[offs + 1] == '#') {
687: /* use command so far */
1.95 christos 688: if ((aptr = el_malloc((offs + 1) * sizeof(*aptr)))
689: == NULL)
1.40 christos 690: return -1;
691: (void)strncpy(aptr, command, offs);
692: aptr[offs] = '\0';
693: idx = 1;
1.1 christos 694: } else {
1.40 christos 695: int qchar;
696:
697: qchar = (offs > 0 && command[offs - 1] == '"')? '"':0;
698: ptr = get_history_event(command + offs, &idx, qchar);
699: }
1.99 christos 700: has_mods = command[offs + (size_t)idx] == ':';
1.40 christos 701: }
1.1 christos 702:
1.40 christos 703: if (ptr == NULL && aptr == NULL)
1.96 christos 704: return -1;
1.1 christos 705:
1.40 christos 706: if (!has_mods) {
1.85 christos 707: *result = strdup(aptr ? aptr : ptr);
1.40 christos 708: if (aptr)
1.95 christos 709: el_free(aptr);
1.85 christos 710: if (*result == NULL)
711: return -1;
1.96 christos 712: return 1;
1.40 christos 713: }
714:
715: cmd = command + offs + idx + 1;
716:
717: /* Now parse any word designators */
718:
719: if (*cmd == '%') /* last word matched by ?pat? */
720: tmp = strdup(last_search_match? last_search_match:"");
721: else if (strchr("^*$-0123456789", *cmd)) {
722: start = end = -1;
723: if (*cmd == '^')
724: start = end = 1, cmd++;
725: else if (*cmd == '$')
726: start = -1, cmd++;
727: else if (*cmd == '*')
728: start = 1, cmd++;
729: else if (*cmd == '-' || isdigit((unsigned char) *cmd)) {
730: start = 0;
731: while (*cmd && '0' <= *cmd && *cmd <= '9')
732: start = start * 10 + *cmd++ - '0';
733:
734: if (*cmd == '-') {
735: if (isdigit((unsigned char) cmd[1])) {
736: cmd++;
737: end = 0;
738: while (*cmd && '0' <= *cmd && *cmd <= '9')
739: end = end * 10 + *cmd++ - '0';
740: } else if (cmd[1] == '$') {
741: cmd += 2;
742: end = -1;
743: } else {
744: cmd++;
745: end = -2;
746: }
747: } else if (*cmd == '*')
748: end = -1, cmd++;
1.1 christos 749: else
1.40 christos 750: end = start;
751: }
752: tmp = history_arg_extract(start, end, aptr? aptr:ptr);
753: if (tmp == NULL) {
754: (void)fprintf(rl_outstream, "%s: Bad word specifier",
755: command + offs + idx);
756: if (aptr)
1.95 christos 757: el_free(aptr);
1.96 christos 758: return -1;
1.40 christos 759: }
760: } else
761: tmp = strdup(aptr? aptr:ptr);
1.1 christos 762:
1.40 christos 763: if (aptr)
1.95 christos 764: el_free(aptr);
1.1 christos 765:
1.77 lukem 766: if (*cmd == '\0' || ((size_t)(cmd - (command + offs)) >= cmdlen)) {
1.40 christos 767: *result = tmp;
1.96 christos 768: return 1;
1.1 christos 769: }
770:
771: for (; *cmd; cmd++) {
772: if (*cmd == ':')
773: continue;
1.40 christos 774: else if (*cmd == 'h') { /* remove trailing path */
775: if ((aptr = strrchr(tmp, '/')) != NULL)
1.76 christos 776: *aptr = '\0';
1.40 christos 777: } else if (*cmd == 't') { /* remove leading path */
778: if ((aptr = strrchr(tmp, '/')) != NULL) {
779: aptr = strdup(aptr + 1);
1.95 christos 780: el_free(tmp);
1.40 christos 781: tmp = aptr;
782: }
783: } else if (*cmd == 'r') { /* remove trailing suffix */
784: if ((aptr = strrchr(tmp, '.')) != NULL)
1.76 christos 785: *aptr = '\0';
1.40 christos 786: } else if (*cmd == 'e') { /* remove all but suffix */
787: if ((aptr = strrchr(tmp, '.')) != NULL) {
788: aptr = strdup(aptr);
1.95 christos 789: el_free(tmp);
1.40 christos 790: tmp = aptr;
791: }
792: } else if (*cmd == 'p') /* print only */
793: p_on = 1;
1.1 christos 794: else if (*cmd == 'g')
795: g_on = 2;
796: else if (*cmd == 's' || *cmd == '&') {
1.11 lukem 797: char *what, *with, delim;
1.30 christos 798: size_t len, from_len;
1.5 christos 799: size_t size;
1.1 christos 800:
801: if (*cmd == '&' && (from == NULL || to == NULL))
802: continue;
803: else if (*cmd == 's') {
804: delim = *(++cmd), cmd++;
805: size = 16;
1.95 christos 806: what = el_realloc(from, size * sizeof(*what));
1.23 christos 807: if (what == NULL) {
1.95 christos 808: el_free(from);
809: el_free(tmp);
1.28 christos 810: return 0;
1.23 christos 811: }
1.1 christos 812: len = 0;
813: for (; *cmd && *cmd != delim; cmd++) {
1.40 christos 814: if (*cmd == '\\' && cmd[1] == delim)
1.1 christos 815: cmd++;
1.23 christos 816: if (len >= size) {
817: char *nwhat;
1.95 christos 818: nwhat = el_realloc(what,
819: (size <<= 1) *
820: sizeof(*nwhat));
1.23 christos 821: if (nwhat == NULL) {
1.95 christos 822: el_free(what);
823: el_free(tmp);
1.28 christos 824: return 0;
1.23 christos 825: }
826: what = nwhat;
827: }
1.1 christos 828: what[len++] = *cmd;
829: }
830: what[len] = '\0';
831: from = what;
832: if (*what == '\0') {
1.95 christos 833: el_free(what);
1.23 christos 834: if (search) {
1.1 christos 835: from = strdup(search);
1.62 christos 836: if (from == NULL) {
1.95 christos 837: el_free(tmp);
1.28 christos 838: return 0;
1.62 christos 839: }
1.23 christos 840: } else {
1.1 christos 841: from = NULL;
1.95 christos 842: el_free(tmp);
1.96 christos 843: return -1;
1.1 christos 844: }
845: }
846: cmd++; /* shift after delim */
847: if (!*cmd)
848: continue;
849:
850: size = 16;
1.95 christos 851: with = el_realloc(to, size * sizeof(*with));
1.23 christos 852: if (with == NULL) {
1.95 christos 853: el_free(to);
854: el_free(tmp);
1.23 christos 855: return -1;
856: }
1.1 christos 857: len = 0;
858: from_len = strlen(from);
859: for (; *cmd && *cmd != delim; cmd++) {
860: if (len + from_len + 1 >= size) {
1.23 christos 861: char *nwith;
1.1 christos 862: size += from_len + 1;
1.95 christos 863: nwith = el_realloc(with,
864: size * sizeof(*nwith));
1.23 christos 865: if (nwith == NULL) {
1.95 christos 866: el_free(with);
867: el_free(tmp);
1.23 christos 868: return -1;
869: }
870: with = nwith;
1.1 christos 871: }
872: if (*cmd == '&') {
873: /* safe */
1.40 christos 874: (void)strcpy(&with[len], from);
1.1 christos 875: len += from_len;
876: continue;
877: }
878: if (*cmd == '\\'
879: && (*(cmd + 1) == delim
880: || *(cmd + 1) == '&'))
881: cmd++;
882: with[len++] = *cmd;
883: }
884: with[len] = '\0';
885: to = with;
886: }
887:
1.40 christos 888: aptr = _rl_compat_sub(tmp, from, to, g_on);
889: if (aptr) {
1.95 christos 890: el_free(tmp);
1.40 christos 891: tmp = aptr;
1.23 christos 892: }
1.40 christos 893: g_on = 0;
1.1 christos 894: }
1.5 christos 895: }
1.40 christos 896: *result = tmp;
1.96 christos 897: return p_on? 2:1;
1.1 christos 898: }
899:
1.11 lukem 900:
1.1 christos 901: /*
902: * csh-style history expansion
903: */
904: int
1.11 lukem 905: history_expand(char *str, char **output)
906: {
1.40 christos 907: int ret = 0;
908: size_t idx, i, size;
909: char *tmp, *result;
1.1 christos 910:
911: if (h == NULL || e == NULL)
912: rl_initialize();
913:
1.40 christos 914: if (history_expansion_char == 0) {
915: *output = strdup(str);
1.96 christos 916: return 0;
1.40 christos 917: }
1.1 christos 918:
1.40 christos 919: *output = NULL;
1.1 christos 920: if (str[0] == history_subst_char) {
921: /* ^foo^foo2^ is equivalent to !!:s^foo^foo2^ */
1.100 christos 922: *output = el_malloc((strlen(str) + 4 + 1) * sizeof(**output));
1.40 christos 923: if (*output == NULL)
924: return 0;
925: (*output)[0] = (*output)[1] = history_expansion_char;
926: (*output)[2] = ':';
927: (*output)[3] = 's';
928: (void)strcpy((*output) + 4, str);
929: str = *output;
930: } else {
931: *output = strdup(str);
932: if (*output == NULL)
933: return 0;
1.1 christos 934: }
1.40 christos 935:
1.63 christos 936: #define ADD_STRING(what, len, fr) \
1.1 christos 937: { \
1.23 christos 938: if (idx + len + 1 > size) { \
1.95 christos 939: char *nresult = el_realloc(result, \
940: (size += len + 1) * sizeof(*nresult)); \
1.23 christos 941: if (nresult == NULL) { \
1.95 christos 942: el_free(*output); \
1.65 christos 943: if (/*CONSTCOND*/fr) \
1.95 christos 944: el_free(tmp); \
1.28 christos 945: return 0; \
1.23 christos 946: } \
947: result = nresult; \
948: } \
1.1 christos 949: (void)strncpy(&result[idx], what, len); \
950: idx += len; \
951: result[idx] = '\0'; \
952: }
953:
954: result = NULL;
955: size = idx = 0;
1.64 christos 956: tmp = NULL;
1.1 christos 957: for (i = 0; str[i];) {
1.40 christos 958: int qchar, loop_again;
959: size_t len, start, j;
1.1 christos 960:
1.40 christos 961: qchar = 0;
1.1 christos 962: loop_again = 1;
963: start = j = i;
964: loop:
965: for (; str[j]; j++) {
966: if (str[j] == '\\' &&
967: str[j + 1] == history_expansion_char) {
1.115 christos 968: len = strlen(&str[j + 1]) + 1;
969: memmove(&str[j], &str[j + 1], len);
1.1 christos 970: continue;
971: }
972: if (!loop_again) {
1.40 christos 973: if (isspace((unsigned char) str[j])
974: || str[j] == qchar)
1.1 christos 975: break;
976: }
977: if (str[j] == history_expansion_char
978: && !strchr(history_no_expand_chars, str[j + 1])
979: && (!history_inhibit_expansion_function ||
1.40 christos 980: (*history_inhibit_expansion_function)(str,
981: (int)j) == 0))
1.1 christos 982: break;
983: }
984:
1.40 christos 985: if (str[j] && loop_again) {
1.1 christos 986: i = j;
1.40 christos 987: qchar = (j > 0 && str[j - 1] == '"' )? '"':0;
1.1 christos 988: j++;
989: if (str[j] == history_expansion_char)
990: j++;
991: loop_again = 0;
992: goto loop;
993: }
994: len = i - start;
1.64 christos 995: ADD_STRING(&str[start], len, 0);
1.1 christos 996:
1.40 christos 997: if (str[i] == '\0' || str[i] != history_expansion_char) {
1.1 christos 998: len = j - i;
1.64 christos 999: ADD_STRING(&str[i], len, 0);
1.1 christos 1000: if (start == 0)
1.40 christos 1001: ret = 0;
1.1 christos 1002: else
1.40 christos 1003: ret = 1;
1.1 christos 1004: break;
1005: }
1.40 christos 1006: ret = _history_expand_command (str, i, (j - i), &tmp);
1007: if (ret > 0 && tmp) {
1008: len = strlen(tmp);
1.63 christos 1009: ADD_STRING(tmp, len, 1);
1.66 christos 1010: }
1011: if (tmp) {
1.95 christos 1012: el_free(tmp);
1.64 christos 1013: tmp = NULL;
1.1 christos 1014: }
1015: i = j;
1.40 christos 1016: }
1.1 christos 1017:
1.40 christos 1018: /* ret is 2 for "print only" option */
1019: if (ret == 2) {
1020: add_history(result);
1.1 christos 1021: #ifdef GDB_411_HACK
1022: /* gdb 4.11 has been shipped with readline, where */
1023: /* history_expand() returned -1 when the line */
1024: /* should not be executed; in readline 2.1+ */
1025: /* it should return 2 in such a case */
1.40 christos 1026: ret = -1;
1.1 christos 1027: #endif
1028: }
1.95 christos 1029: el_free(*output);
1.1 christos 1030: *output = result;
1031:
1.96 christos 1032: return ret;
1.1 christos 1033: }
1034:
1.40 christos 1035: /*
1036: * Return a string consisting of arguments of "str" from "start" to "end".
1037: */
1038: char *
1039: history_arg_extract(int start, int end, const char *str)
1040: {
1041: size_t i, len, max;
1.84 christos 1042: char **arr, *result = NULL;
1.40 christos 1043:
1044: arr = history_tokenize(str);
1045: if (!arr)
1.84 christos 1046: return NULL;
1047: if (arr && *arr == NULL)
1048: goto out;
1.40 christos 1049:
1050: for (max = 0; arr[max]; max++)
1051: continue;
1052: max--;
1053:
1054: if (start == '$')
1.80 christos 1055: start = (int)max;
1.40 christos 1056: if (end == '$')
1.80 christos 1057: end = (int)max;
1.40 christos 1058: if (end < 0)
1.80 christos 1059: end = (int)max + end + 1;
1.40 christos 1060: if (start < 0)
1061: start = end;
1062:
1.84 christos 1063: if (start < 0 || end < 0 || (size_t)start > max ||
1064: (size_t)end > max || start > end)
1065: goto out;
1.40 christos 1066:
1.99 christos 1067: for (i = (size_t)start, len = 0; i <= (size_t)end; i++)
1.40 christos 1068: len += strlen(arr[i]) + 1;
1069: len++;
1.95 christos 1070: result = el_malloc(len * sizeof(*result));
1.40 christos 1071: if (result == NULL)
1.84 christos 1072: goto out;
1.40 christos 1073:
1.99 christos 1074: for (i = (size_t)start, len = 0; i <= (size_t)end; i++) {
1.40 christos 1075: (void)strcpy(result + len, arr[i]);
1076: len += strlen(arr[i]);
1.77 lukem 1077: if (i < (size_t)end)
1.40 christos 1078: result[len++] = ' ';
1079: }
1.76 christos 1080: result[len] = '\0';
1.40 christos 1081:
1.84 christos 1082: out:
1.40 christos 1083: for (i = 0; arr[i]; i++)
1.95 christos 1084: el_free(arr[i]);
1085: el_free(arr);
1.40 christos 1086:
1.84 christos 1087: return result;
1.40 christos 1088: }
1.11 lukem 1089:
1.1 christos 1090: /*
1.40 christos 1091: * Parse the string into individual tokens,
1092: * similar to how shell would do it.
1.1 christos 1093: */
1094: char **
1.11 lukem 1095: history_tokenize(const char *str)
1.1 christos 1096: {
1.40 christos 1097: int size = 1, idx = 0, i, start;
1.5 christos 1098: size_t len;
1.1 christos 1099: char **result = NULL, *temp, delim = '\0';
1100:
1.40 christos 1101: for (i = 0; str[i];) {
1.4 christos 1102: while (isspace((unsigned char) str[i]))
1.1 christos 1103: i++;
1104: start = i;
1.40 christos 1105: for (; str[i];) {
1.9 jdolecek 1106: if (str[i] == '\\') {
1.14 jdolecek 1107: if (str[i+1] != '\0')
1.9 jdolecek 1108: i++;
1109: } else if (str[i] == delim)
1.1 christos 1110: delim = '\0';
1111: else if (!delim &&
1.11 lukem 1112: (isspace((unsigned char) str[i]) ||
1113: strchr("()<>;&|$", str[i])))
1.1 christos 1114: break;
1115: else if (!delim && strchr("'`\"", str[i]))
1116: delim = str[i];
1.40 christos 1117: if (str[i])
1118: i++;
1.1 christos 1119: }
1120:
1.40 christos 1121: if (idx + 2 >= size) {
1.23 christos 1122: char **nresult;
1.1 christos 1123: size <<= 1;
1.99 christos 1124: nresult = el_realloc(result, (size_t)size * sizeof(*nresult));
1.23 christos 1125: if (nresult == NULL) {
1.95 christos 1126: el_free(result);
1.23 christos 1127: return NULL;
1128: }
1129: result = nresult;
1.1 christos 1130: }
1.99 christos 1131: len = (size_t)i - (size_t)start;
1132: temp = el_malloc((size_t)(len + 1) * sizeof(*temp));
1.23 christos 1133: if (temp == NULL) {
1.40 christos 1134: for (i = 0; i < idx; i++)
1.95 christos 1135: el_free(result[i]);
1136: el_free(result);
1.23 christos 1137: return NULL;
1138: }
1.40 christos 1139: (void)strncpy(temp, &str[start], len);
1.1 christos 1140: temp[len] = '\0';
1.40 christos 1141: result[idx++] = temp;
1142: result[idx] = NULL;
1143: if (str[i])
1144: i++;
1.1 christos 1145: }
1.96 christos 1146: return result;
1.1 christos 1147: }
1148:
1.11 lukem 1149:
1.1 christos 1150: /*
1151: * limit size of history record to ``max'' events
1152: */
1153: void
1.11 lukem 1154: stifle_history(int max)
1.1 christos 1155: {
1.92 christos 1156: HistEvent ev;
1.130 christos 1157: HIST_ENTRY *he;
1.1 christos 1158:
1159: if (h == NULL || e == NULL)
1160: rl_initialize();
1161:
1.130 christos 1162: if (history(h, &ev, H_SETSIZE, max) == 0) {
1.1 christos 1163: max_input_history = max;
1.136 christos 1164: if (history_length > max)
1165: history_base = history_length - max;
1.135 christos 1166: while (history_length > max) {
1.134 christos 1167: he = remove_history(0);
1.130 christos 1168: el_free(he->data);
1169: el_free((void *)(unsigned long)he->line);
1170: el_free(he);
1171: }
1172: }
1.1 christos 1173: }
1174:
1.11 lukem 1175:
1.1 christos 1176: /*
1177: * "unlimit" size of history - set the limit to maximum allowed int value
1178: */
1179: int
1.11 lukem 1180: unstifle_history(void)
1.1 christos 1181: {
1.92 christos 1182: HistEvent ev;
1.1 christos 1183: int omax;
1184:
1.92 christos 1185: history(h, &ev, H_SETSIZE, INT_MAX);
1.1 christos 1186: omax = max_input_history;
1187: max_input_history = INT_MAX;
1.96 christos 1188: return omax; /* some value _must_ be returned */
1.1 christos 1189: }
1190:
1.11 lukem 1191:
1.1 christos 1192: int
1.11 lukem 1193: history_is_stifled(void)
1.1 christos 1194: {
1.11 lukem 1195:
1.1 christos 1196: /* cannot return true answer */
1.96 christos 1197: return max_input_history != INT_MAX;
1.1 christos 1198: }
1199:
1.85 christos 1200: static const char _history_tmp_template[] = "/tmp/.historyXXXXXX";
1201:
1202: int
1203: history_truncate_file (const char *filename, int nlines)
1204: {
1205: int ret = 0;
1206: FILE *fp, *tp;
1207: char template[sizeof(_history_tmp_template)];
1208: char buf[4096];
1209: int fd;
1210: char *cp;
1211: off_t off;
1212: int count = 0;
1213: ssize_t left = 0;
1214:
1215: if (filename == NULL && (filename = _default_history_file()) == NULL)
1216: return errno;
1217: if ((fp = fopen(filename, "r+")) == NULL)
1218: return errno;
1219: strcpy(template, _history_tmp_template);
1220: if ((fd = mkstemp(template)) == -1) {
1221: ret = errno;
1222: goto out1;
1223: }
1224:
1225: if ((tp = fdopen(fd, "r+")) == NULL) {
1226: close(fd);
1227: ret = errno;
1228: goto out2;
1229: }
1230:
1231: for(;;) {
1.98 christos 1232: if (fread(buf, sizeof(buf), (size_t)1, fp) != 1) {
1.85 christos 1233: if (ferror(fp)) {
1234: ret = errno;
1235: break;
1236: }
1237: if (fseeko(fp, (off_t)sizeof(buf) * count, SEEK_SET) ==
1238: (off_t)-1) {
1239: ret = errno;
1240: break;
1241: }
1.99 christos 1242: left = (ssize_t)fread(buf, (size_t)1, sizeof(buf), fp);
1.85 christos 1243: if (ferror(fp)) {
1244: ret = errno;
1245: break;
1246: }
1247: if (left == 0) {
1248: count--;
1249: left = sizeof(buf);
1.98 christos 1250: } else if (fwrite(buf, (size_t)left, (size_t)1, tp)
1251: != 1) {
1.85 christos 1252: ret = errno;
1253: break;
1254: }
1255: fflush(tp);
1256: break;
1257: }
1.98 christos 1258: if (fwrite(buf, sizeof(buf), (size_t)1, tp) != 1) {
1.85 christos 1259: ret = errno;
1260: break;
1261: }
1262: count++;
1263: }
1264: if (ret)
1265: goto out3;
1266: cp = buf + left - 1;
1267: if(*cp != '\n')
1268: cp++;
1269: for(;;) {
1270: while (--cp >= buf) {
1271: if (*cp == '\n') {
1272: if (--nlines == 0) {
1273: if (++cp >= buf + sizeof(buf)) {
1274: count++;
1275: cp = buf;
1276: }
1277: break;
1278: }
1279: }
1280: }
1281: if (nlines <= 0 || count == 0)
1282: break;
1283: count--;
1284: if (fseeko(tp, (off_t)sizeof(buf) * count, SEEK_SET) < 0) {
1285: ret = errno;
1286: break;
1287: }
1.98 christos 1288: if (fread(buf, sizeof(buf), (size_t)1, tp) != 1) {
1.85 christos 1289: if (ferror(tp)) {
1290: ret = errno;
1291: break;
1292: }
1293: ret = EAGAIN;
1294: break;
1295: }
1296: cp = buf + sizeof(buf);
1297: }
1298:
1299: if (ret || nlines > 0)
1300: goto out3;
1301:
1.98 christos 1302: if (fseeko(fp, (off_t)0, SEEK_SET) == (off_t)-1) {
1.85 christos 1303: ret = errno;
1304: goto out3;
1305: }
1306:
1307: if (fseeko(tp, (off_t)sizeof(buf) * count + (cp - buf), SEEK_SET) ==
1308: (off_t)-1) {
1309: ret = errno;
1310: goto out3;
1311: }
1312:
1313: for(;;) {
1.99 christos 1314: if ((left = (ssize_t)fread(buf, (size_t)1, sizeof(buf), tp)) == 0) {
1.85 christos 1315: if (ferror(fp))
1316: ret = errno;
1317: break;
1318: }
1.98 christos 1319: if (fwrite(buf, (size_t)left, (size_t)1, fp) != 1) {
1.85 christos 1320: ret = errno;
1321: break;
1322: }
1323: }
1324: fflush(fp);
1325: if((off = ftello(fp)) > 0)
1326: (void)ftruncate(fileno(fp), off);
1327: out3:
1328: fclose(tp);
1329: out2:
1330: unlink(template);
1331: out1:
1332: fclose(fp);
1333:
1334: return ret;
1335: }
1336:
1.11 lukem 1337:
1.1 christos 1338: /*
1339: * read history from a file given
1340: */
1341: int
1.11 lukem 1342: read_history(const char *filename)
1.1 christos 1343: {
1.92 christos 1344: HistEvent ev;
1.1 christos 1345:
1346: if (h == NULL || e == NULL)
1347: rl_initialize();
1.85 christos 1348: if (filename == NULL && (filename = _default_history_file()) == NULL)
1349: return errno;
1.96 christos 1350: return history(h, &ev, H_LOAD, filename) == -1 ?
1351: (errno ? errno : EINVAL) : 0;
1.1 christos 1352: }
1353:
1.11 lukem 1354:
1.1 christos 1355: /*
1356: * write history to a file given
1357: */
1358: int
1.11 lukem 1359: write_history(const char *filename)
1.1 christos 1360: {
1.92 christos 1361: HistEvent ev;
1.1 christos 1362:
1363: if (h == NULL || e == NULL)
1364: rl_initialize();
1.85 christos 1365: if (filename == NULL && (filename = _default_history_file()) == NULL)
1366: return errno;
1.96 christos 1367: return history(h, &ev, H_SAVE, filename) == -1 ?
1368: (errno ? errno : EINVAL) : 0;
1.1 christos 1369: }
1370:
1.142 ! christos 1371: int
! 1372: append_history(int n, const char *filename)
! 1373: {
! 1374: HistEvent ev;
! 1375: FILE *fp;
! 1376:
! 1377: if (h == NULL || e == NULL)
! 1378: rl_initialize();
! 1379: if (filename == NULL && (filename = _default_history_file()) == NULL)
! 1380: return errno;
! 1381:
! 1382: if ((fp = fopen(filename, "a")) == NULL)
! 1383: return errno;
! 1384:
! 1385: if (history(h, &ev, H_NSAVE_FP, (size_t)n, fp) == -1) {
! 1386: int serrno = errno ? errno : EINVAL;
! 1387: fclose(fp);
! 1388: return serrno;
! 1389: }
! 1390: fclose(fp);
! 1391: return 0;
! 1392: }
1.11 lukem 1393:
1.1 christos 1394: /*
1395: * returns history ``num''th event
1396: *
1397: * returned pointer points to static variable
1398: */
1.2 christos 1399: HIST_ENTRY *
1.11 lukem 1400: history_get(int num)
1.1 christos 1401: {
1402: static HIST_ENTRY she;
1.92 christos 1403: HistEvent ev;
1.40 christos 1404: int curr_num;
1.1 christos 1405:
1406: if (h == NULL || e == NULL)
1407: rl_initialize();
1408:
1.131 christos 1409: if (num < history_base)
1410: return NULL;
1411:
1.40 christos 1412: /* save current position */
1.92 christos 1413: if (history(h, &ev, H_CURR) != 0)
1.96 christos 1414: return NULL;
1.1 christos 1415: curr_num = ev.num;
1.40 christos 1416:
1.131 christos 1417: /*
1418: * use H_DELDATA to set to nth history (without delete) by passing
1419: * (void **)-1 -- as in history_set_pos
1420: */
1421: if (history(h, &ev, H_DELDATA, num - history_base, (void **)-1) != 0)
1422: goto out;
1.1 christos 1423:
1.131 christos 1424: /* get current entry */
1425: if (history(h, &ev, H_CURR) != 0)
1426: goto out;
1427: if (history(h, &ev, H_NEXT_EVDATA, ev.num, &she.data) != 0)
1428: goto out;
1.92 christos 1429: she.line = ev.str;
1.1 christos 1430:
1.40 christos 1431: /* restore pointer to where it was */
1.92 christos 1432: (void)history(h, &ev, H_SET, curr_num);
1.1 christos 1433:
1.96 christos 1434: return &she;
1.131 christos 1435:
1436: out:
1437: /* restore pointer to where it was */
1438: (void)history(h, &ev, H_SET, curr_num);
1439: return NULL;
1.1 christos 1440: }
1441:
1.11 lukem 1442:
1.1 christos 1443: /*
1444: * add the line to history table
1445: */
1446: int
1.11 lukem 1447: add_history(const char *line)
1.1 christos 1448: {
1.92 christos 1449: HistEvent ev;
1.1 christos 1450:
1451: if (h == NULL || e == NULL)
1452: rl_initialize();
1453:
1.135 christos 1454: if (history(h, &ev, H_ENTER, line) == -1)
1455: return 0;
1456:
1457: (void)history(h, &ev, H_GETSIZE);
1458: if (ev.num == history_length)
1459: history_base++;
1460: else
1.1 christos 1461: history_length = ev.num;
1.135 christos 1462: return 0;
1.1 christos 1463: }
1464:
1.11 lukem 1465:
1.1 christos 1466: /*
1.58 christos 1467: * remove the specified entry from the history list and return it.
1468: */
1469: HIST_ENTRY *
1470: remove_history(int num)
1471: {
1.85 christos 1472: HIST_ENTRY *he;
1.92 christos 1473: HistEvent ev;
1.58 christos 1474:
1475: if (h == NULL || e == NULL)
1476: rl_initialize();
1477:
1.95 christos 1478: if ((he = el_malloc(sizeof(*he))) == NULL)
1.58 christos 1479: return NULL;
1480:
1.92 christos 1481: if (history(h, &ev, H_DELDATA, num, &he->data) != 0) {
1.95 christos 1482: el_free(he);
1.71 christos 1483: return NULL;
1.85 christos 1484: }
1.71 christos 1485:
1.92 christos 1486: he->line = ev.str;
1487: if (history(h, &ev, H_GETSIZE) == 0)
1.85 christos 1488: history_length = ev.num;
1.58 christos 1489:
1.85 christos 1490: return he;
1.58 christos 1491: }
1492:
1493:
1494: /*
1.85 christos 1495: * replace the line and data of the num-th entry
1496: */
1497: HIST_ENTRY *
1498: replace_history_entry(int num, const char *line, histdata_t data)
1499: {
1500: HIST_ENTRY *he;
1.92 christos 1501: HistEvent ev;
1.85 christos 1502: int curr_num;
1503:
1504: if (h == NULL || e == NULL)
1505: rl_initialize();
1506:
1507: /* save current position */
1.92 christos 1508: if (history(h, &ev, H_CURR) != 0)
1.85 christos 1509: return NULL;
1510: curr_num = ev.num;
1511:
1512: /* start from the oldest */
1.92 christos 1513: if (history(h, &ev, H_LAST) != 0)
1.85 christos 1514: return NULL; /* error */
1515:
1.95 christos 1516: if ((he = el_malloc(sizeof(*he))) == NULL)
1.85 christos 1517: return NULL;
1518:
1519: /* look forwards for event matching specified offset */
1.92 christos 1520: if (history(h, &ev, H_NEXT_EVDATA, num, &he->data))
1.85 christos 1521: goto out;
1522:
1.92 christos 1523: he->line = strdup(ev.str);
1.85 christos 1524: if (he->line == NULL)
1525: goto out;
1526:
1.92 christos 1527: if (history(h, &ev, H_REPLACE, line, data))
1.85 christos 1528: goto out;
1529:
1530: /* restore pointer to where it was */
1.92 christos 1531: if (history(h, &ev, H_SET, curr_num))
1.85 christos 1532: goto out;
1533:
1534: return he;
1535: out:
1.95 christos 1536: el_free(he);
1.85 christos 1537: return NULL;
1538: }
1539:
1540: /*
1.1 christos 1541: * clear the history list - delete all entries
1542: */
1543: void
1.11 lukem 1544: clear_history(void)
1.1 christos 1545: {
1.92 christos 1546: HistEvent ev;
1.11 lukem 1547:
1.110 christos 1548: if (h == NULL || e == NULL)
1549: rl_initialize();
1550:
1.92 christos 1551: (void)history(h, &ev, H_CLEAR);
1.137 christos 1552: history_offset = history_length = 0;
1.1 christos 1553: }
1554:
1.11 lukem 1555:
1.1 christos 1556: /*
1557: * returns offset of the current history event
1558: */
1559: int
1.11 lukem 1560: where_history(void)
1.1 christos 1561: {
1.137 christos 1562: return history_offset;
1563: }
1564:
1565: static HIST_ENTRY **_history_listp;
1566: static HIST_ENTRY *_history_list;
1567:
1568: HIST_ENTRY **
1569: history_list(void)
1570: {
1.92 christos 1571: HistEvent ev;
1.137 christos 1572: HIST_ENTRY **nlp, *nl;
1573: int i;
1.1 christos 1574:
1.137 christos 1575: if (history(h, &ev, H_LAST) != 0)
1576: return NULL;
1.1 christos 1577:
1.137 christos 1578: if ((nlp = el_realloc(_history_listp,
1579: (size_t)history_length * sizeof(*nlp))) == NULL)
1580: return NULL;
1581: _history_listp = nlp;
1.133 christos 1582:
1.137 christos 1583: if ((nl = el_realloc(_history_list,
1584: (size_t)history_length * sizeof(*nl))) == NULL)
1585: return NULL;
1586: _history_list = nl;
1587:
1588: i = 0;
1589: do {
1590: _history_listp[i] = &_history_list[i];
1591: _history_list[i].line = ev.str;
1592: _history_list[i].data = NULL;
1593: if (i++ == history_length)
1594: abort();
1595: } while (history(h, &ev, H_PREV) == 0);
1596: return _history_listp;
1.1 christos 1597: }
1598:
1599: /*
1600: * returns current history event or NULL if there is no such event
1601: */
1.2 christos 1602: HIST_ENTRY *
1.11 lukem 1603: current_history(void)
1.1 christos 1604: {
1.137 christos 1605: HistEvent ev;
1606:
1607: if (history(h, &ev, H_PREV_EVENT, history_offset + 1) != 0)
1608: return NULL;
1.11 lukem 1609:
1.137 christos 1610: rl_he.line = ev.str;
1611: rl_he.data = NULL;
1612: return &rl_he;
1.1 christos 1613: }
1614:
1.11 lukem 1615:
1.1 christos 1616: /*
1617: * returns total number of bytes history events' data are using
1618: */
1619: int
1.11 lukem 1620: history_total_bytes(void)
1.1 christos 1621: {
1.92 christos 1622: HistEvent ev;
1.80 christos 1623: int curr_num;
1624: size_t size;
1.1 christos 1625:
1.92 christos 1626: if (history(h, &ev, H_CURR) != 0)
1.96 christos 1627: return -1;
1.1 christos 1628: curr_num = ev.num;
1629:
1.92 christos 1630: (void)history(h, &ev, H_FIRST);
1.1 christos 1631: size = 0;
1632: do
1.92 christos 1633: size += strlen(ev.str) * sizeof(*ev.str);
1634: while (history(h, &ev, H_NEXT) == 0);
1.1 christos 1635:
1636: /* get to the same position as before */
1.92 christos 1637: history(h, &ev, H_PREV_EVENT, curr_num);
1.1 christos 1638:
1.96 christos 1639: return (int)size;
1.1 christos 1640: }
1641:
1.11 lukem 1642:
1.1 christos 1643: /*
1644: * sets the position in the history list to ``pos''
1645: */
1646: int
1.11 lukem 1647: history_set_pos(int pos)
1.1 christos 1648: {
1.85 christos 1649: if (pos >= history_length || pos < 0)
1.129 christos 1650: return 0;
1.1 christos 1651:
1.137 christos 1652: history_offset = pos;
1.129 christos 1653: return 1;
1.1 christos 1654: }
1655:
1.11 lukem 1656:
1.1 christos 1657: /*
1658: * returns previous event in history and shifts pointer accordingly
1.132 christos 1659: * Note that readline and editline define directions in opposite ways.
1.1 christos 1660: */
1.2 christos 1661: HIST_ENTRY *
1.11 lukem 1662: previous_history(void)
1.1 christos 1663: {
1.137 christos 1664: HistEvent ev;
1665:
1666: if (history_offset == 0)
1667: return NULL;
1.11 lukem 1668:
1.137 christos 1669: if (history(h, &ev, H_LAST) != 0)
1670: return NULL;
1671:
1672: history_offset--;
1673: return current_history();
1.1 christos 1674: }
1675:
1.11 lukem 1676:
1.1 christos 1677: /*
1678: * returns next event in history and shifts pointer accordingly
1679: */
1.2 christos 1680: HIST_ENTRY *
1.11 lukem 1681: next_history(void)
1.1 christos 1682: {
1.137 christos 1683: HistEvent ev;
1684:
1685: if (history_offset >= history_length)
1686: return NULL;
1687:
1688: if (history(h, &ev, H_LAST) != 0)
1689: return NULL;
1.11 lukem 1690:
1.137 christos 1691: history_offset++;
1692: return current_history();
1.1 christos 1693: }
1694:
1.11 lukem 1695:
1.1 christos 1696: /*
1.40 christos 1697: * searches for first history event containing the str
1.1 christos 1698: */
1.40 christos 1699: int
1700: history_search(const char *str, int direction)
1.11 lukem 1701: {
1.92 christos 1702: HistEvent ev;
1703: const char *strp;
1.11 lukem 1704: int curr_num;
1.1 christos 1705:
1.92 christos 1706: if (history(h, &ev, H_CURR) != 0)
1.96 christos 1707: return -1;
1.1 christos 1708: curr_num = ev.num;
1709:
1710: for (;;) {
1.92 christos 1711: if ((strp = strstr(ev.str, str)) != NULL)
1.96 christos 1712: return (int)(strp - ev.str);
1.92 christos 1713: if (history(h, &ev, direction < 0 ? H_NEXT:H_PREV) != 0)
1.1 christos 1714: break;
1715: }
1.92 christos 1716: (void)history(h, &ev, H_SET, curr_num);
1.96 christos 1717: return -1;
1.1 christos 1718: }
1719:
1.11 lukem 1720:
1.1 christos 1721: /*
1722: * searches for first history event beginning with str
1723: */
1724: int
1.11 lukem 1725: history_search_prefix(const char *str, int direction)
1.1 christos 1726: {
1.92 christos 1727: HistEvent ev;
1.11 lukem 1728:
1.92 christos 1729: return (history(h, &ev, direction < 0 ?
1.88 christos 1730: H_PREV_STR : H_NEXT_STR, str));
1.1 christos 1731: }
1732:
1.11 lukem 1733:
1.1 christos 1734: /*
1735: * search for event in history containing str, starting at offset
1736: * abs(pos); continue backward, if pos<0, forward otherwise
1737: */
1.5 christos 1738: /* ARGSUSED */
1.1 christos 1739: int
1.40 christos 1740: history_search_pos(const char *str,
1.30 christos 1741: int direction __attribute__((__unused__)), int pos)
1.1 christos 1742: {
1.92 christos 1743: HistEvent ev;
1.11 lukem 1744: int curr_num, off;
1.1 christos 1745:
1746: off = (pos > 0) ? pos : -pos;
1747: pos = (pos > 0) ? 1 : -1;
1748:
1.92 christos 1749: if (history(h, &ev, H_CURR) != 0)
1.96 christos 1750: return -1;
1.1 christos 1751: curr_num = ev.num;
1752:
1.129 christos 1753: if (!history_set_pos(off) || history(h, &ev, H_CURR) != 0)
1.96 christos 1754: return -1;
1.1 christos 1755:
1756: for (;;) {
1.92 christos 1757: if (strstr(ev.str, str))
1.96 christos 1758: return off;
1.92 christos 1759: if (history(h, &ev, (pos < 0) ? H_PREV : H_NEXT) != 0)
1.1 christos 1760: break;
1761: }
1762:
1763: /* set "current" pointer back to previous state */
1.92 christos 1764: (void)history(h, &ev,
1.88 christos 1765: pos < 0 ? H_NEXT_EVENT : H_PREV_EVENT, curr_num);
1.1 christos 1766:
1.96 christos 1767: return -1;
1.1 christos 1768: }
1769:
1770:
1771: /********************************/
1.40 christos 1772: /* completion functions */
1.1 christos 1773:
1.57 christos 1774: char *
1775: tilde_expand(char *name)
1776: {
1777: return fn_tilde_expand(name);
1778: }
1779:
1780: char *
1781: filename_completion_function(const char *name, int state)
1782: {
1783: return fn_filename_completion_function(name, state);
1784: }
1785:
1.1 christos 1786: /*
1787: * a completion generator for usernames; returns _first_ username
1788: * which starts with supplied text
1789: * text contains a partial username preceded by random character
1.94 christos 1790: * (usually '~'); state resets search from start (??? should we do that anyway)
1.113 snj 1791: * it's the caller's responsibility to free the returned value
1.1 christos 1792: */
1.11 lukem 1793: char *
1794: username_completion_function(const char *text, int state)
1.1 christos 1795: {
1.94 christos 1796: #if defined(HAVE_GETPW_R_POSIX) || defined(HAVE_GETPW_R_DRAFT)
1797: struct passwd pwres;
1.50 christos 1798: char pwbuf[1024];
1.94 christos 1799: #endif
1800: struct passwd *pass = NULL;
1.1 christos 1801:
1802: if (text[0] == '\0')
1.96 christos 1803: return NULL;
1.1 christos 1804:
1805: if (*text == '~')
1806: text++;
1807:
1808: if (state == 0)
1809: setpwent();
1810:
1.94 christos 1811: while (
1812: #if defined(HAVE_GETPW_R_POSIX) || defined(HAVE_GETPW_R_DRAFT)
1813: getpwent_r(&pwres, pwbuf, sizeof(pwbuf), &pass) == 0 && pass != NULL
1814: #else
1815: (pass = getpwent()) != NULL
1816: #endif
1817: && text[0] == pass->pw_name[0]
1818: && strcmp(text, pass->pw_name) == 0)
1819: continue;
1.1 christos 1820:
1.94 christos 1821: if (pass == NULL) {
1.1 christos 1822: endpwent();
1.85 christos 1823: return NULL;
1.1 christos 1824: }
1.94 christos 1825: return strdup(pass->pw_name);
1.1 christos 1826: }
1827:
1.11 lukem 1828:
1.1 christos 1829: /*
1.46 christos 1830: * el-compatible wrapper to send TSTP on ^Z
1831: */
1832: /* ARGSUSED */
1833: static unsigned char
1834: _el_rl_tstp(EditLine *el __attribute__((__unused__)), int ch __attribute__((__unused__)))
1835: {
1836: (void)kill(0, SIGTSTP);
1837: return CC_NORM;
1838: }
1.11 lukem 1839:
1.56 christos 1840: static const char *
1841: /*ARGSUSED*/
1842: _rl_completion_append_character_function(const char *dummy
1843: __attribute__((__unused__)))
1844: {
1845: static char buf[2];
1.99 christos 1846: buf[0] = (char)rl_completion_append_character;
1.76 christos 1847: buf[1] = '\0';
1.56 christos 1848: return buf;
1849: }
1850:
1.11 lukem 1851:
1.1 christos 1852: /*
1.141 abhinav 1853: * Display list of strings in columnar format on readline's output stream.
1854: * 'matches' is list of strings, 'len' is number of strings in 'matches',
1855: * 'max' is maximum length of string in 'matches'.
1856: */
1857: void
1858: rl_display_match_list(char **matches, int len, int max)
1859: {
1860:
1861: fn_display_match_list(e, matches, (size_t)len, (size_t)max,
1862: _rl_completion_append_character_function);
1863: }
1864:
1865: /*
1.1 christos 1866: * complete word at current point
1867: */
1.53 dsl 1868: /* ARGSUSED */
1.1 christos 1869: int
1.53 dsl 1870: rl_complete(int ignore __attribute__((__unused__)), int invoking_key)
1.1 christos 1871: {
1.86 christos 1872: static ct_buffer_t wbreak_conv, sprefix_conv;
1.102 christos 1873: char *breakchars;
1.86 christos 1874:
1.1 christos 1875: if (h == NULL || e == NULL)
1876: rl_initialize();
1877:
1878: if (rl_inhibit_completion) {
1.47 christos 1879: char arr[2];
1880: arr[0] = (char)invoking_key;
1881: arr[1] = '\0';
1882: el_insertstr(e, arr);
1.96 christos 1883: return CC_REFRESH;
1.53 dsl 1884: }
1885:
1.102 christos 1886: if (rl_completion_word_break_hook != NULL)
1887: breakchars = (*rl_completion_word_break_hook)();
1888: else
1889: breakchars = rl_basic_word_break_characters;
1890:
1.116 christos 1891: _rl_update_pos();
1892:
1.53 dsl 1893: /* Just look at how many global variables modify this operation! */
1894: return fn_complete(e,
1.117 christos 1895: (rl_compentry_func_t *)rl_completion_entry_function,
1.53 dsl 1896: rl_attempted_completion_function,
1.86 christos 1897: ct_decode_string(rl_basic_word_break_characters, &wbreak_conv),
1.102 christos 1898: ct_decode_string(breakchars, &sprefix_conv),
1.81 christos 1899: _rl_completion_append_character_function,
1900: (size_t)rl_completion_query_items,
1.53 dsl 1901: &rl_completion_type, &rl_attempted_completion_over,
1902: &rl_point, &rl_end);
1.92 christos 1903:
1904:
1.1 christos 1905: }
1906:
1.11 lukem 1907:
1.53 dsl 1908: /* ARGSUSED */
1909: static unsigned char
1910: _el_rl_complete(EditLine *el __attribute__((__unused__)), int ch)
1911: {
1912: return (unsigned char)rl_complete(0, ch);
1913: }
1914:
1.1 christos 1915: /*
1.7 simonb 1916: * misc other functions
1.1 christos 1917: */
1918:
1919: /*
1920: * bind key c to readline-type function func
1921: */
1922: int
1.85 christos 1923: rl_bind_key(int c, rl_command_func_t *func)
1.1 christos 1924: {
1.11 lukem 1925: int retval = -1;
1.1 christos 1926:
1927: if (h == NULL || e == NULL)
1928: rl_initialize();
1929:
1930: if (func == rl_insert) {
1931: /* XXX notice there is no range checking of ``c'' */
1932: e->el_map.key[c] = ED_INSERT;
1933: retval = 0;
1934: }
1.96 christos 1935: return retval;
1.1 christos 1936: }
1937:
1.11 lukem 1938:
1.1 christos 1939: /*
1940: * read one key from input - handles chars pushed back
1941: * to input stream also
1942: */
1943: int
1.11 lukem 1944: rl_read_key(void)
1.1 christos 1945: {
1.11 lukem 1946: char fooarr[2 * sizeof(int)];
1.1 christos 1947:
1948: if (e == NULL || h == NULL)
1949: rl_initialize();
1950:
1.96 christos 1951: return el_getc(e, fooarr);
1.1 christos 1952: }
1953:
1.11 lukem 1954:
1.1 christos 1955: /*
1956: * reset the terminal
1957: */
1.5 christos 1958: /* ARGSUSED */
1.1 christos 1959: void
1.30 christos 1960: rl_reset_terminal(const char *p __attribute__((__unused__)))
1.1 christos 1961: {
1.11 lukem 1962:
1.1 christos 1963: if (h == NULL || e == NULL)
1964: rl_initialize();
1965: el_reset(e);
1966: }
1967:
1.11 lukem 1968:
1.1 christos 1969: /*
1970: * insert character ``c'' back into input stream, ``count'' times
1971: */
1972: int
1.11 lukem 1973: rl_insert(int count, int c)
1.1 christos 1974: {
1.11 lukem 1975: char arr[2];
1.1 christos 1976:
1977: if (h == NULL || e == NULL)
1978: rl_initialize();
1979:
1980: /* XXX - int -> char conversion can lose on multichars */
1.99 christos 1981: arr[0] = (char)c;
1.1 christos 1982: arr[1] = '\0';
1983:
1984: for (; count > 0; count--)
1985: el_push(e, arr);
1986:
1.96 christos 1987: return 0;
1.35 christos 1988: }
1989:
1.85 christos 1990: int
1991: rl_insert_text(const char *text)
1992: {
1993: if (!text || *text == 0)
1.96 christos 1994: return 0;
1.85 christos 1995:
1996: if (h == NULL || e == NULL)
1997: rl_initialize();
1998:
1999: if (el_insertstr(e, text) < 0)
1.96 christos 2000: return 0;
1.85 christos 2001: return (int)strlen(text);
2002: }
2003:
1.35 christos 2004: /*ARGSUSED*/
2005: int
1.97 christos 2006: rl_newline(int count __attribute__((__unused__)),
2007: int c __attribute__((__unused__)))
1.35 christos 2008: {
2009: /*
2010: * Readline-4.0 appears to ignore the args.
2011: */
2012: return rl_insert(1, '\n');
2013: }
2014:
2015: /*ARGSUSED*/
2016: static unsigned char
1.97 christos 2017: rl_bind_wrapper(EditLine *el __attribute__((__unused__)), unsigned char c)
1.35 christos 2018: {
2019: if (map[c] == NULL)
2020: return CC_ERROR;
1.49 christos 2021:
2022: _rl_update_pos();
2023:
1.116 christos 2024: (*map[c])(1, c);
1.38 christos 2025:
2026: /* If rl_done was set by the above call, deal with it here */
2027: if (rl_done)
2028: return CC_EOF;
2029:
1.35 christos 2030: return CC_NORM;
2031: }
2032:
2033: int
1.116 christos 2034: rl_add_defun(const char *name, rl_command_func_t *fun, int c)
1.35 christos 2035: {
2036: char dest[8];
1.77 lukem 2037: if ((size_t)c >= sizeof(map) / sizeof(map[0]) || c < 0)
1.35 christos 2038: return -1;
2039: map[(unsigned char)c] = fun;
2040: el_set(e, EL_ADDFN, name, name, rl_bind_wrapper);
1.37 christos 2041: vis(dest, c, VIS_WHITE|VIS_NOSLASH, 0);
1.106 christos 2042: el_set(e, EL_BIND, dest, name, NULL);
1.35 christos 2043: return 0;
2044: }
2045:
2046: void
1.101 matt 2047: rl_callback_read_char(void)
1.35 christos 2048: {
1.36 christos 2049: int count = 0, done = 0;
1.35 christos 2050: const char *buf = el_gets(e, &count);
2051: char *wbuf;
2052:
2053: if (buf == NULL || count-- <= 0)
2054: return;
1.61 christos 2055: if (count == 0 && buf[0] == e->el_tty.t_c[TS_IO][C_EOF])
1.36 christos 2056: done = 1;
2057: if (buf[count] == '\n' || buf[count] == '\r')
2058: done = 2;
2059:
2060: if (done && rl_linefunc != NULL) {
1.35 christos 2061: el_set(e, EL_UNBUFFERED, 0);
1.36 christos 2062: if (done == 2) {
2063: if ((wbuf = strdup(buf)) != NULL)
2064: wbuf[count] = '\0';
2065: } else
2066: wbuf = NULL;
1.35 christos 2067: (*(void (*)(const char *))rl_linefunc)(wbuf);
1.111 christos 2068: el_set(e, EL_UNBUFFERED, 1);
1.35 christos 2069: }
2070: }
2071:
1.125 christos 2072: void
1.117 christos 2073: rl_callback_handler_install(const char *prompt, rl_vcpfunc_t *linefunc)
1.35 christos 2074: {
2075: if (e == NULL) {
2076: rl_initialize();
2077: }
1.78 christos 2078: (void)rl_set_prompt(prompt);
1.35 christos 2079: rl_linefunc = linefunc;
2080: el_set(e, EL_UNBUFFERED, 1);
1.125 christos 2081: }
1.35 christos 2082:
1.125 christos 2083: void
1.35 christos 2084: rl_callback_handler_remove(void)
2085: {
1.72 christos 2086: rl_linefunc = NULL;
1.142 ! christos 2087: el_end(e);
! 2088: e = NULL;
1.35 christos 2089: }
2090:
2091: void
2092: rl_redisplay(void)
2093: {
2094: char a[2];
1.99 christos 2095: a[0] = (char)e->el_tty.t_c[TS_IO][C_REPRINT];
1.35 christos 2096: a[1] = '\0';
2097: el_push(e, a);
2098: }
2099:
2100: int
2101: rl_get_previous_history(int count, int key)
2102: {
2103: char a[2];
1.99 christos 2104: a[0] = (char)key;
1.35 christos 2105: a[1] = '\0';
2106: while (count--)
2107: el_push(e, a);
2108: return 0;
1.38 christos 2109: }
2110:
2111: void
2112: /*ARGSUSED*/
1.97 christos 2113: rl_prep_terminal(int meta_flag __attribute__((__unused__)))
1.38 christos 2114: {
2115: el_set(e, EL_PREP_TERM, 1);
2116: }
2117:
2118: void
1.68 christos 2119: rl_deprep_terminal(void)
1.38 christos 2120: {
2121: el_set(e, EL_PREP_TERM, 0);
2122: }
2123:
2124: int
2125: rl_read_init_file(const char *s)
2126: {
1.96 christos 2127: return el_source(e, s);
1.38 christos 2128: }
2129:
2130: int
2131: rl_parse_and_bind(const char *line)
2132: {
2133: const char **argv;
2134: int argc;
2135: Tokenizer *tok;
2136:
2137: tok = tok_init(NULL);
1.44 lukem 2138: tok_str(tok, line, &argc, &argv);
1.38 christos 2139: argc = el_parse(e, argc, argv);
2140: tok_end(tok);
1.96 christos 2141: return argc ? 1 : 0;
1.38 christos 2142: }
2143:
1.51 christos 2144: int
2145: rl_variable_bind(const char *var, const char *value)
2146: {
2147: /*
2148: * The proper return value is undocument, but this is what the
2149: * readline source seems to do.
2150: */
1.106 christos 2151: return el_set(e, EL_BIND, "", var, value, NULL) == -1 ? 1 : 0;
1.51 christos 2152: }
2153:
1.38 christos 2154: void
2155: rl_stuff_char(int c)
2156: {
2157: char buf[2];
2158:
1.99 christos 2159: buf[0] = (char)c;
1.38 christos 2160: buf[1] = '\0';
2161: el_insertstr(e, buf);
2162: }
2163:
2164: static int
1.126 christos 2165: _rl_event_read_char(EditLine *el, wchar_t *wc)
1.38 christos 2166: {
1.126 christos 2167: char ch;
1.80 christos 2168: int n;
2169: ssize_t num_read = 0;
1.38 christos 2170:
1.126 christos 2171: ch = '\0';
2172: *wc = L'\0';
1.38 christos 2173: while (rl_event_hook) {
2174:
2175: (*rl_event_hook)();
2176:
2177: #if defined(FIONREAD)
2178: if (ioctl(el->el_infd, FIONREAD, &n) < 0)
1.96 christos 2179: return -1;
1.38 christos 2180: if (n)
1.126 christos 2181: num_read = read(el->el_infd, &ch, (size_t)1);
1.38 christos 2182: else
2183: num_read = 0;
2184: #elif defined(F_SETFL) && defined(O_NDELAY)
2185: if ((n = fcntl(el->el_infd, F_GETFL, 0)) < 0)
1.96 christos 2186: return -1;
1.38 christos 2187: if (fcntl(el->el_infd, F_SETFL, n|O_NDELAY) < 0)
1.96 christos 2188: return -1;
1.126 christos 2189: num_read = read(el->el_infd, &ch, 1);
1.38 christos 2190: if (fcntl(el->el_infd, F_SETFL, n))
1.96 christos 2191: return -1;
1.38 christos 2192: #else
2193: /* not non-blocking, but what you gonna do? */
1.126 christos 2194: num_read = read(el->el_infd, &ch, 1);
1.96 christos 2195: return -1;
1.38 christos 2196: #endif
2197:
2198: if (num_read < 0 && errno == EAGAIN)
2199: continue;
2200: if (num_read == 0)
2201: continue;
2202: break;
2203: }
2204: if (!rl_event_hook)
2205: el_set(el, EL_GETCFN, EL_BUILTIN_GETCFN);
1.126 christos 2206: *wc = (wchar_t)ch;
1.80 christos 2207: return (int)num_read;
1.1 christos 2208: }
1.49 christos 2209:
2210: static void
2211: _rl_update_pos(void)
2212: {
2213: const LineInfo *li = el_line(e);
2214:
1.80 christos 2215: rl_point = (int)(li->cursor - li->buffer);
2216: rl_end = (int)(li->lastchar - li->buffer);
1.49 christos 2217: }
1.70 christos 2218:
2219: void
2220: rl_get_screen_size(int *rows, int *cols)
2221: {
2222: if (rows)
1.107 christos 2223: el_get(e, EL_GETTC, "li", rows, (void *)0);
1.70 christos 2224: if (cols)
1.107 christos 2225: el_get(e, EL_GETTC, "co", cols, (void *)0);
1.70 christos 2226: }
2227:
2228: void
2229: rl_set_screen_size(int rows, int cols)
2230: {
2231: char buf[64];
2232: (void)snprintf(buf, sizeof(buf), "%d", rows);
1.106 christos 2233: el_set(e, EL_SETTC, "li", buf, NULL);
1.70 christos 2234: (void)snprintf(buf, sizeof(buf), "%d", cols);
1.106 christos 2235: el_set(e, EL_SETTC, "co", buf, NULL);
1.70 christos 2236: }
2237:
1.71 christos 2238: char **
2239: rl_completion_matches(const char *str, rl_compentry_func_t *fun)
2240: {
2241: size_t len, max, i, j, min;
2242: char **list, *match, *a, *b;
2243:
2244: len = 1;
2245: max = 10;
1.95 christos 2246: if ((list = el_malloc(max * sizeof(*list))) == NULL)
1.71 christos 2247: return NULL;
2248:
2249: while ((match = (*fun)(str, (int)(len - 1))) != NULL) {
1.83 christos 2250: list[len++] = match;
1.71 christos 2251: if (len == max) {
2252: char **nl;
2253: max += 10;
1.95 christos 2254: if ((nl = el_realloc(list, max * sizeof(*nl))) == NULL)
1.71 christos 2255: goto out;
2256: list = nl;
2257: }
2258: }
2259: if (len == 1)
2260: goto out;
2261: list[len] = NULL;
2262: if (len == 2) {
2263: if ((list[0] = strdup(list[1])) == NULL)
2264: goto out;
2265: return list;
2266: }
2267: qsort(&list[1], len - 1, sizeof(*list),
2268: (int (*)(const void *, const void *)) strcmp);
1.119 christos 2269: min = SIZE_MAX;
1.71 christos 2270: for (i = 1, a = list[i]; i < len - 1; i++, a = b) {
2271: b = list[i + 1];
2272: for (j = 0; a[j] && a[j] == b[j]; j++)
2273: continue;
2274: if (min > j)
2275: min = j;
2276: }
2277: if (min == 0 && *str) {
2278: if ((list[0] = strdup(str)) == NULL)
2279: goto out;
2280: } else {
1.95 christos 2281: if ((list[0] = el_malloc((min + 1) * sizeof(*list[0]))) == NULL)
1.71 christos 2282: goto out;
2283: (void)memcpy(list[0], list[1], min);
2284: list[0][min] = '\0';
2285: }
2286: return list;
1.125 christos 2287:
1.71 christos 2288: out:
1.95 christos 2289: el_free(list);
1.71 christos 2290: return NULL;
2291: }
2292:
1.70 christos 2293: char *
2294: rl_filename_completion_function (const char *text, int state)
2295: {
2296: return fn_filename_completion_function(text, state);
2297: }
2298:
1.73 christos 2299: void
2300: rl_forced_update_display(void)
2301: {
1.74 christos 2302: el_set(e, EL_REFRESH);
1.73 christos 2303: }
2304:
1.70 christos 2305: int
2306: _rl_abort_internal(void)
2307: {
2308: el_beep(e);
2309: longjmp(topbuf, 1);
2310: /*NOTREACHED*/
2311: }
2312:
2313: int
2314: _rl_qsort_string_compare(char **s1, char **s2)
2315: {
2316: return strcoll(*s1, *s2);
2317: }
2318:
1.85 christos 2319: HISTORY_STATE *
2320: history_get_history_state(void)
2321: {
2322: HISTORY_STATE *hs;
2323:
1.95 christos 2324: if ((hs = el_malloc(sizeof(*hs))) == NULL)
1.96 christos 2325: return NULL;
1.85 christos 2326: hs->length = history_length;
1.96 christos 2327: return hs;
1.85 christos 2328: }
2329:
1.70 christos 2330: int
2331: /*ARGSUSED*/
1.97 christos 2332: rl_kill_text(int from __attribute__((__unused__)),
2333: int to __attribute__((__unused__)))
1.70 christos 2334: {
2335: return 0;
2336: }
2337:
2338: Keymap
2339: rl_make_bare_keymap(void)
2340: {
2341: return NULL;
2342: }
2343:
2344: Keymap
2345: rl_get_keymap(void)
2346: {
2347: return NULL;
2348: }
2349:
2350: void
2351: /*ARGSUSED*/
1.97 christos 2352: rl_set_keymap(Keymap k __attribute__((__unused__)))
1.70 christos 2353: {
2354: }
2355:
2356: int
2357: /*ARGSUSED*/
1.97 christos 2358: rl_generic_bind(int type __attribute__((__unused__)),
2359: const char * keyseq __attribute__((__unused__)),
2360: const char * data __attribute__((__unused__)),
2361: Keymap k __attribute__((__unused__)))
1.70 christos 2362: {
2363: return 0;
2364: }
2365:
2366: int
2367: /*ARGSUSED*/
1.97 christos 2368: rl_bind_key_in_map(int key __attribute__((__unused__)),
2369: rl_command_func_t *fun __attribute__((__unused__)),
2370: Keymap k __attribute__((__unused__)))
1.70 christos 2371: {
2372: return 0;
2373: }
1.85 christos 2374:
2375: /* unsupported, but needed by python */
2376: void
2377: rl_cleanup_after_signal(void)
2378: {
2379: }
1.90 christos 2380:
2381: int
2382: rl_on_new_line(void)
2383: {
2384: return 0;
2385: }
1.105 christos 2386:
2387: void
2388: rl_free_line_state(void)
2389: {
2390: }
1.118 christos 2391:
2392: int
2393: /*ARGSUSED*/
1.120 christos 2394: rl_set_keyboard_input_timeout(int u __attribute__((__unused__)))
1.118 christos 2395: {
2396: return 0;
2397: }
1.142 ! christos 2398:
! 2399: void
! 2400: rl_resize_terminal(void)
! 2401: {
! 2402: el_resize(e);
! 2403: }
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