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