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