2 * Copyright (c) 1997 The NetBSD Foundation, Inc.
5 * This code is derived from software contributed to The NetBSD Foundation
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of The NetBSD Foundation nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
32 * $NetBSD: readline.c,v 1.70 2006/11/24 00:01:17 christos Exp $
33 * $DragonFly: src/lib/libedit/readline.c,v 1.2 2007/05/05 00:27:39 pavalos Exp $
38 #include <sys/types.h>
60 #include "fcns.h" /* for EL_NUM_FCNS */
62 #include "readline/readline.h"
63 #include "filecomplete.h"
65 void rl_prep_terminal(int);
66 void rl_deprep_terminal(void);
68 /* for rl_complete() */
71 /* see comment at the #ifdef for sense of this */
72 /* #define GDB_411_HACK */
74 /* readline compatibility stuff - look at readline sources/documentation */
75 /* to see what these variables mean */
76 const char *rl_library_version = "EditLine wrapper";
77 static char empty[] = { '\0' };
78 static char expand_chars[] = { ' ', '\t', '\n', '=', '(', '\0' };
79 static char break_chars[] = { ' ', '\t', '\n', '"', '\\', '\'', '`', '@', '$',
80 '>', '<', '=', ';', '|', '&', '{', '(', '\0' };
81 char *rl_readline_name = empty;
82 FILE *rl_instream = NULL;
83 FILE *rl_outstream = NULL;
86 char *rl_line_buffer = NULL;
87 VCPFunction *rl_linefunc = NULL;
89 VFunction *rl_event_hook = NULL;
90 KEYMAP_ENTRY_ARRAY emacs_standard_keymap,
94 int history_base = 1; /* probably never subject to change */
95 int history_length = 0;
96 int max_input_history = 0;
97 char history_expansion_char = '!';
98 char history_subst_char = '^';
99 char *history_no_expand_chars = expand_chars;
100 Function *history_inhibit_expansion_function = NULL;
101 char *history_arg_extract(int start, int end, const char *str);
103 int rl_inhibit_completion = 0;
104 int rl_attempted_completion_over = 0;
105 char *rl_basic_word_break_characters = break_chars;
106 char *rl_completer_word_break_characters = NULL;
107 char *rl_completer_quote_characters = NULL;
108 Function *rl_completion_entry_function = NULL;
109 CPPFunction *rl_attempted_completion_function = NULL;
110 Function *rl_pre_input_hook = NULL;
111 Function *rl_startup1_hook = NULL;
112 Function *rl_getc_function = NULL;
113 char *rl_terminal_name = NULL;
114 int rl_already_prompted = 0;
115 int rl_filename_completion_desired = 0;
116 int rl_ignore_completion_duplicates = 0;
117 int rl_catch_signals = 1;
118 int readline_echoing_p = 1;
119 int _rl_print_completions_horizontally = 0;
120 VFunction *rl_redisplay_function = NULL;
121 Function *rl_startup_hook = NULL;
122 VFunction *rl_completion_display_matches_hook = NULL;
123 VFunction *rl_prep_term_function = (VFunction *)rl_prep_terminal;
124 VFunction *rl_deprep_term_function = (VFunction *)rl_deprep_terminal;
127 * The current prompt string.
129 char *rl_prompt = NULL;
131 * This is set to character indicating type of completion being done by
132 * rl_complete_internal(); this is available for application completion
135 int rl_completion_type = 0;
138 * If more than this number of items results from query for possible
139 * completions, we ask user if they are sure to really display the list.
141 int rl_completion_query_items = 100;
144 * List of characters which are word break characters, but should be left
145 * in the parsed text when it is passed to the completion function.
146 * Shell uses this to help determine what kind of completing to do.
148 char *rl_special_prefixes = NULL;
151 * This is the character appended to the completed words if at the end of
152 * the line. Default is ' ' (a space).
154 int rl_completion_append_character = ' ';
156 /* stuff below is used internally by libedit for readline emulation */
158 static History *h = NULL;
159 static EditLine *e = NULL;
160 static Function *map[256];
161 static jmp_buf topbuf;
163 /* internal functions */
164 static unsigned char _el_rl_complete(EditLine *, int);
165 static unsigned char _el_rl_tstp(EditLine *, int);
166 static char *_get_prompt(EditLine *);
167 static int _getc_function(EditLine *, char *);
168 static HIST_ENTRY *_move_history(int);
169 static int _history_expand_command(const char *, size_t, size_t,
171 static char *_rl_compat_sub(const char *, const char *,
173 static int _rl_event_read_char(EditLine *, char *);
174 static void _rl_update_pos(void);
179 _get_prompt(EditLine *el __attribute__((__unused__)))
181 rl_already_prompted = 1;
187 * generic function for moving around history
190 _move_history(int op)
193 static HIST_ENTRY rl_he;
195 if (history(h, &ev, op) != 0)
196 return (HIST_ENTRY *) NULL;
206 * read one key from user defined input function
210 _getc_function(EditLine *el, char *c)
214 i = (*rl_getc_function)(NULL, 0);
223 * READLINE compatibility stuff
227 * initialize rl compat stuff
245 rl_outstream = stdout;
248 * See if we don't really want to run the editor
250 if (tcgetattr(fileno(rl_instream), &t) != -1 && (t.c_lflag & ECHO) == 0)
253 e = el_init(rl_readline_name, rl_instream, rl_outstream, stderr);
256 el_set(e, EL_EDITMODE, 0);
262 history(h, &ev, H_SETSIZE, INT_MAX); /* unlimited */
264 max_input_history = INT_MAX;
265 el_set(e, EL_HIST, history, h);
267 /* setup getc function if valid */
268 if (rl_getc_function)
269 el_set(e, EL_GETCFN, _getc_function);
271 /* for proper prompt printing in readline() */
272 rl_prompt = strdup("");
273 if (rl_prompt == NULL) {
278 el_set(e, EL_PROMPT, _get_prompt);
279 el_set(e, EL_SIGNAL, rl_catch_signals);
281 /* set default mode to "emacs"-style and read setting afterwards */
282 /* so this can be overriden */
283 el_set(e, EL_EDITOR, "emacs");
284 if (rl_terminal_name != NULL)
285 el_set(e, EL_TERMINAL, rl_terminal_name);
287 el_get(e, EL_TERMINAL, &rl_terminal_name);
290 * Word completion - this has to go AFTER rebinding keys
293 el_set(e, EL_ADDFN, "rl_complete",
294 "ReadLine compatible completion function",
296 el_set(e, EL_BIND, "^I", "rl_complete", NULL);
299 * Send TSTP when ^Z is pressed.
301 el_set(e, EL_ADDFN, "rl_tstp",
302 "ReadLine compatible suspend function",
304 el_set(e, EL_BIND, "^Z", "rl_tstp", NULL);
306 /* read settings from configuration file */
310 * Unfortunately, some applications really do use rl_point
311 * and rl_line_buffer directly.
314 /* a cheesy way to get rid of const cast. */
315 rl_line_buffer = memchr(li->buffer, *li->buffer, 1);
319 (*rl_startup_hook)(NULL, 0);
326 * read one line from input stream and return it, chomping
327 * trailing newline (if there is any)
330 readline(const char *p)
333 const char * volatile prompt = p;
337 static int used_event_hook;
339 if (e == NULL || h == NULL)
344 (void)setjmp(topbuf);
346 /* update prompt accordingly to what has been passed */
349 if (strcmp(rl_prompt, prompt) != 0) {
351 rl_prompt = strdup(prompt);
352 if (rl_prompt == NULL)
356 if (rl_pre_input_hook)
357 (*rl_pre_input_hook)(NULL, 0);
359 if (rl_event_hook && !(e->el_flags&NO_TTY)) {
360 el_set(e, EL_GETCFN, _rl_event_read_char);
364 if (!rl_event_hook && used_event_hook) {
365 el_set(e, EL_GETCFN, EL_BUILTIN_GETCFN);
369 rl_already_prompted = 0;
371 /* get one line from input stream */
372 ret = el_gets(e, &count);
374 if (ret && count > 0) {
381 if (buf[lastidx] == '\n')
386 history(h, &ev, H_GETSIZE);
387 history_length = ev.num;
397 * is normally called before application starts to use
398 * history expansion functions
403 if (h == NULL || e == NULL)
409 * substitute ``what'' with ``with'', returning resulting string; if
410 * globally == 1, substitutes all occurrences of what, otherwise only the
414 _rl_compat_sub(const char *str, const char *what, const char *with,
419 size_t len, with_len, what_len;
422 with_len = strlen(with);
423 what_len = strlen(what);
425 /* calculate length we need for result */
428 if (*s == *what && !strncmp(s, what, what_len)) {
429 len += with_len - what_len;
436 r = result = malloc(len + 1);
441 if (*s == *what && !strncmp(s, what, what_len)) {
442 (void)strncpy(r, with, with_len);
456 static char *last_search_pat; /* last !?pat[?] search pattern */
457 static char *last_search_match; /* last !?pat[?] that matched */
460 get_history_event(const char *cmd, int *cindex, int qchar)
462 int idx, sign, sub, num, begin, ret;
469 if (cmd[idx++] != history_expansion_char)
472 /* find out which event to take */
473 if (cmd[idx] == history_expansion_char || cmd[idx] == 0) {
474 if (history(h, &ev, H_FIRST) != 0)
476 *cindex = cmd[idx]? (idx + 1):idx;
480 if (cmd[idx] == '-') {
485 if ('0' <= cmd[idx] && cmd[idx] <= '9') {
489 while (cmd[idx] && '0' <= cmd[idx] && cmd[idx] <= '9') {
490 num = num * 10 + cmd[idx] - '0';
494 num = history_length - num + 1;
496 if (!(rl_he = history_get(num)))
503 if (cmd[idx] == '?') {
509 if (cmd[idx] == '\n')
511 if (sub && cmd[idx] == '?')
513 if (!sub && (cmd[idx] == ':' || cmd[idx] == ' '
514 || cmd[idx] == '\t' || cmd[idx] == qchar))
519 if (sub && cmd[idx] == '?')
521 if (sub && len == 0 && last_search_pat && *last_search_pat)
522 pat = last_search_pat;
526 if ((pat = malloc(len + 1)) == NULL)
528 (void)strncpy(pat, cmd + begin, len);
532 if (history(h, &ev, H_CURR) != 0) {
533 if (pat != last_search_pat)
540 if (pat != last_search_pat) {
542 free(last_search_pat);
543 last_search_pat = pat;
545 ret = history_search(pat, -1);
547 ret = history_search_prefix(pat, -1);
550 /* restore to end of list on failed search */
551 history(h, &ev, H_FIRST);
552 (void)fprintf(rl_outstream, "%s: Event not found\n", pat);
553 if (pat != last_search_pat)
559 if (last_search_match && last_search_match != pat)
560 free(last_search_match);
561 last_search_match = pat;
564 if (pat != last_search_pat)
567 if (history(h, &ev, H_CURR) != 0)
572 /* roll back to original position */
573 (void)history(h, &ev, H_SET, num);
579 * the real function doing history expansion - takes as argument command
580 * to do and data upon which the command should be executed
581 * does expansion the way I've understood readline documentation
583 * returns 0 if data was not modified, 1 if it was and 2 if the string
584 * should be only printed and not executed; in case of error,
585 * returns -1 and *result points to NULL
586 * it's callers responsibility to free() string returned in *result
589 _history_expand_command(const char *command, size_t offs, size_t cmdlen,
592 char *tmp, *search = NULL, *aptr;
593 const char *ptr, *cmd;
594 static char *from = NULL, *to = NULL;
595 int start, end, idx, has_mods = 0;
596 int p_on = 0, g_on = 0;
602 /* First get event specifier */
605 if (strchr(":^*$", command[offs + 1])) {
608 * "!:" is shorthand for "!!:".
609 * "!^", "!*" and "!$" are shorthand for
610 * "!!:^", "!!:*" and "!!:$" respectively.
612 str[0] = str[1] = '!';
614 ptr = get_history_event(str, &idx, 0);
615 idx = (command[offs + 1] == ':')? 1:0;
618 if (command[offs + 1] == '#') {
619 /* use command so far */
620 if ((aptr = malloc(offs + 1)) == NULL)
622 (void)strncpy(aptr, command, offs);
628 qchar = (offs > 0 && command[offs - 1] == '"')? '"':0;
629 ptr = get_history_event(command + offs, &idx, qchar);
631 has_mods = command[offs + idx] == ':';
634 if (ptr == NULL && aptr == NULL)
638 *result = strdup(aptr? aptr : ptr);
644 cmd = command + offs + idx + 1;
646 /* Now parse any word designators */
648 if (*cmd == '%') /* last word matched by ?pat? */
649 tmp = strdup(last_search_match? last_search_match:"");
650 else if (strchr("^*$-0123456789", *cmd)) {
653 start = end = 1, cmd++;
654 else if (*cmd == '$')
656 else if (*cmd == '*')
658 else if (*cmd == '-' || isdigit((unsigned char) *cmd)) {
660 while (*cmd && '0' <= *cmd && *cmd <= '9')
661 start = start * 10 + *cmd++ - '0';
664 if (isdigit((unsigned char) cmd[1])) {
667 while (*cmd && '0' <= *cmd && *cmd <= '9')
668 end = end * 10 + *cmd++ - '0';
669 } else if (cmd[1] == '$') {
676 } else if (*cmd == '*')
681 tmp = history_arg_extract(start, end, aptr? aptr:ptr);
683 (void)fprintf(rl_outstream, "%s: Bad word specifier",
684 command + offs + idx);
690 tmp = strdup(aptr? aptr:ptr);
695 if (*cmd == 0 || (cmd - (command + offs) >= cmdlen)) {
700 for (; *cmd; cmd++) {
703 else if (*cmd == 'h') { /* remove trailing path */
704 if ((aptr = strrchr(tmp, '/')) != NULL)
706 } else if (*cmd == 't') { /* remove leading path */
707 if ((aptr = strrchr(tmp, '/')) != NULL) {
708 aptr = strdup(aptr + 1);
712 } else if (*cmd == 'r') { /* remove trailing suffix */
713 if ((aptr = strrchr(tmp, '.')) != NULL)
715 } else if (*cmd == 'e') { /* remove all but suffix */
716 if ((aptr = strrchr(tmp, '.')) != NULL) {
721 } else if (*cmd == 'p') /* print only */
723 else if (*cmd == 'g')
725 else if (*cmd == 's' || *cmd == '&') {
726 char *what, *with, delim;
727 size_t len, from_len;
730 if (*cmd == '&' && (from == NULL || to == NULL))
732 else if (*cmd == 's') {
733 delim = *(++cmd), cmd++;
735 what = realloc(from, size);
742 for (; *cmd && *cmd != delim; cmd++) {
743 if (*cmd == '\\' && cmd[1] == delim)
747 nwhat = realloc(what,
763 from = strdup(search);
774 cmd++; /* shift after delim */
779 with = realloc(to, size);
786 from_len = strlen(from);
787 for (; *cmd && *cmd != delim; cmd++) {
788 if (len + from_len + 1 >= size) {
790 size += from_len + 1;
791 nwith = realloc(with, size);
801 (void)strcpy(&with[len], from);
806 && (*(cmd + 1) == delim
807 || *(cmd + 1) == '&'))
815 aptr = _rl_compat_sub(tmp, from, to, g_on);
829 * csh-style history expansion
832 history_expand(char *str, char **output)
838 if (h == NULL || e == NULL)
841 if (history_expansion_char == 0) {
842 *output = strdup(str);
847 if (str[0] == history_subst_char) {
848 /* ^foo^foo2^ is equivalent to !!:s^foo^foo2^ */
849 *output = malloc(strlen(str) + 4 + 1);
852 (*output)[0] = (*output)[1] = history_expansion_char;
855 (void)strcpy((*output) + 4, str);
858 *output = strdup(str);
863 #define ADD_STRING(what, len, fr) \
865 if (idx + len + 1 > size) { \
866 char *nresult = realloc(result, (size += len + 1));\
867 if (nresult == NULL) { \
869 if (/*CONSTCOND*/fr) \
875 (void)strncpy(&result[idx], what, len); \
877 result[idx] = '\0'; \
883 for (i = 0; str[i];) {
884 int qchar, loop_again;
885 size_t len, start, j;
891 for (; str[j]; j++) {
892 if (str[j] == '\\' &&
893 str[j + 1] == history_expansion_char) {
894 (void)strcpy(&str[j], &str[j + 1]);
898 if (isspace((unsigned char) str[j])
902 if (str[j] == history_expansion_char
903 && !strchr(history_no_expand_chars, str[j + 1])
904 && (!history_inhibit_expansion_function ||
905 (*history_inhibit_expansion_function)(str,
910 if (str[j] && loop_again) {
912 qchar = (j > 0 && str[j - 1] == '"' )? '"':0;
914 if (str[j] == history_expansion_char)
920 ADD_STRING(&str[start], len, 0);
922 if (str[i] == '\0' || str[i] != history_expansion_char) {
924 ADD_STRING(&str[i], len, 0);
931 ret = _history_expand_command (str, i, (j - i), &tmp);
932 if (ret > 0 && tmp) {
934 ADD_STRING(tmp, len, 1);
943 /* ret is 2 for "print only" option */
947 /* gdb 4.11 has been shipped with readline, where */
948 /* history_expand() returned -1 when the line */
949 /* should not be executed; in readline 2.1+ */
950 /* it should return 2 in such a case */
961 * Return a string consisting of arguments of "str" from "start" to "end".
964 history_arg_extract(int start, int end, const char *str)
969 arr = history_tokenize(str);
972 if (arr && *arr == NULL) {
977 for (max = 0; arr[max]; max++)
990 if (start < 0 || end < 0 || start > max || end > max || start > end)
993 for (i = start, len = 0; i <= end; i++)
994 len += strlen(arr[i]) + 1;
996 result = malloc(len);
1000 for (i = start, len = 0; i <= end; i++) {
1001 (void)strcpy(result + len, arr[i]);
1002 len += strlen(arr[i]);
1004 result[len++] = ' ';
1008 for (i = 0; arr[i]; i++)
1016 * Parse the string into individual tokens,
1017 * similar to how shell would do it.
1020 history_tokenize(const char *str)
1022 int size = 1, idx = 0, i, start;
1024 char **result = NULL, *temp, delim = '\0';
1026 for (i = 0; str[i];) {
1027 while (isspace((unsigned char) str[i]))
1031 if (str[i] == '\\') {
1032 if (str[i+1] != '\0')
1034 } else if (str[i] == delim)
1037 (isspace((unsigned char) str[i]) ||
1038 strchr("()<>;&|$", str[i])))
1040 else if (!delim && strchr("'`\"", str[i]))
1046 if (idx + 2 >= size) {
1049 nresult = realloc(result, size * sizeof(char *));
1050 if (nresult == NULL) {
1057 temp = malloc(len + 1);
1059 for (i = 0; i < idx; i++)
1064 (void)strncpy(temp, &str[start], len);
1066 result[idx++] = temp;
1076 * limit size of history record to ``max'' events
1079 stifle_history(int max)
1083 if (h == NULL || e == NULL)
1086 if (history(h, &ev, H_SETSIZE, max) == 0)
1087 max_input_history = max;
1092 * "unlimit" size of history - set the limit to maximum allowed int value
1095 unstifle_history(void)
1100 history(h, &ev, H_SETSIZE, INT_MAX);
1101 omax = max_input_history;
1102 max_input_history = INT_MAX;
1103 return (omax); /* some value _must_ be returned */
1108 history_is_stifled(void)
1111 /* cannot return true answer */
1112 return (max_input_history != INT_MAX);
1117 * read history from a file given
1120 read_history(const char *filename)
1124 if (h == NULL || e == NULL)
1126 return (history(h, &ev, H_LOAD, filename) == -1);
1131 * write history to a file given
1134 write_history(const char *filename)
1138 if (h == NULL || e == NULL)
1140 return (history(h, &ev, H_SAVE, filename) == -1);
1145 * returns history ``num''th event
1147 * returned pointer points to static variable
1150 history_get(int num)
1152 static HIST_ENTRY she;
1156 if (h == NULL || e == NULL)
1159 /* save current position */
1160 if (history(h, &ev, H_CURR) != 0)
1164 /* start from most recent */
1165 if (history(h, &ev, H_FIRST) != 0)
1166 return (NULL); /* error */
1168 /* look backwards for event matching specified offset */
1169 if (history(h, &ev, H_NEXT_EVENT, num))
1175 /* restore pointer to where it was */
1176 (void)history(h, &ev, H_SET, curr_num);
1183 * add the line to history table
1186 add_history(const char *line)
1190 if (h == NULL || e == NULL)
1193 (void)history(h, &ev, H_ENTER, line);
1194 if (history(h, &ev, H_GETSIZE) == 0)
1195 history_length = ev.num;
1197 return (!(history_length > 0)); /* return 0 if all is okay */
1202 * remove the specified entry from the history list and return it.
1205 remove_history(int num)
1207 static HIST_ENTRY she;
1210 if (h == NULL || e == NULL)
1213 if (history(h, &ev, H_DEL, num) != 0)
1224 * clear the history list - delete all entries
1231 history(h, &ev, H_CLEAR);
1236 * returns offset of the current history event
1244 if (history(h, &ev, H_CURR) != 0)
1248 history(h, &ev, H_FIRST);
1250 while (ev.num != curr_num && history(h, &ev, H_NEXT) == 0)
1258 * returns current history event or NULL if there is no such event
1261 current_history(void)
1264 return (_move_history(H_CURR));
1269 * returns total number of bytes history events' data are using
1272 history_total_bytes(void)
1277 if (history(h, &ev, H_CURR) != 0)
1281 history(h, &ev, H_FIRST);
1284 size += strlen(ev.str);
1285 while (history(h, &ev, H_NEXT) == 0);
1287 /* get to the same position as before */
1288 history(h, &ev, H_PREV_EVENT, curr_num);
1295 * sets the position in the history list to ``pos''
1298 history_set_pos(int pos)
1303 if (pos > history_length || pos < 0)
1306 history(h, &ev, H_CURR);
1309 if (history(h, &ev, H_SET, pos)) {
1310 history(h, &ev, H_SET, curr_num);
1318 * returns previous event in history and shifts pointer accordingly
1321 previous_history(void)
1324 return (_move_history(H_PREV));
1329 * returns next event in history and shifts pointer accordingly
1335 return (_move_history(H_NEXT));
1340 * searches for first history event containing the str
1343 history_search(const char *str, int direction)
1349 if (history(h, &ev, H_CURR) != 0)
1354 if ((strp = strstr(ev.str, str)) != NULL)
1355 return (int) (strp - ev.str);
1356 if (history(h, &ev, direction < 0 ? H_NEXT:H_PREV) != 0)
1359 history(h, &ev, H_SET, curr_num);
1365 * searches for first history event beginning with str
1368 history_search_prefix(const char *str, int direction)
1372 return (history(h, &ev, direction < 0? H_PREV_STR:H_NEXT_STR, str));
1377 * search for event in history containing str, starting at offset
1378 * abs(pos); continue backward, if pos<0, forward otherwise
1382 history_search_pos(const char *str,
1383 int direction __attribute__((__unused__)), int pos)
1388 off = (pos > 0) ? pos : -pos;
1389 pos = (pos > 0) ? 1 : -1;
1391 if (history(h, &ev, H_CURR) != 0)
1395 if (history_set_pos(off) != 0 || history(h, &ev, H_CURR) != 0)
1400 if (strstr(ev.str, str))
1402 if (history(h, &ev, (pos < 0) ? H_PREV : H_NEXT) != 0)
1406 /* set "current" pointer back to previous state */
1407 history(h, &ev, (pos < 0) ? H_NEXT_EVENT : H_PREV_EVENT, curr_num);
1413 /********************************/
1414 /* completion functions */
1417 tilde_expand(char *name)
1419 return fn_tilde_expand(name);
1423 filename_completion_function(const char *name, int state)
1425 return fn_filename_completion_function(name, state);
1429 * a completion generator for usernames; returns _first_ username
1430 * which starts with supplied text
1431 * text contains a partial username preceded by random character
1432 * (usually '~'); state is ignored
1433 * it's callers responsibility to free returned value
1436 username_completion_function(const char *text, int state)
1439 For when getpwent_r is supported:
1440 struct passwd *pwd, pwres;
1444 /* remove the above when getpwend_r is supported */
1446 if (text[0] == '\0')
1456 For when getpwent_r is supported:
1457 while (getpwent_r(&pwres, pwbuf, sizeof(pwbuf), &pwd) == 0
1458 && pwd != NULL && text[0] == pwd->pw_name[0]
1459 && strcmp(text, pwd->pw_name) == 0);
1463 if (pwd != NULL && text[0] == pwd->pw_name[0] && strcmp(text, pwd->pw_name) == 0)
1467 /* remove the above when getpwend_r is supported */
1473 return (strdup(pwd->pw_name));
1478 * el-compatible wrapper to send TSTP on ^Z
1481 static unsigned char
1482 _el_rl_tstp(EditLine *el __attribute__((__unused__)), int ch __attribute__((__unused__)))
1484 (void)kill(0, SIGTSTP);
1489 * Display list of strings in columnar format on readline's output stream.
1490 * 'matches' is list of strings, 'len' is number of strings in 'matches',
1491 * 'max' is maximum length of string in 'matches'.
1494 rl_display_match_list(char **matches, int len, int max)
1497 fn_display_match_list(e, matches, len, max);
1502 _rl_completion_append_character_function(const char *dummy
1503 __attribute__((__unused__)))
1506 buf[1] = rl_completion_append_character;
1512 * complete word at current point
1516 rl_complete(int ignore __attribute__((__unused__)), int invoking_key)
1518 if (h == NULL || e == NULL)
1521 if (rl_inhibit_completion) {
1523 arr[0] = (char)invoking_key;
1525 el_insertstr(e, arr);
1526 return (CC_REFRESH);
1529 /* Just look at how many global variables modify this operation! */
1530 return fn_complete(e,
1531 (CPFunction *)rl_completion_entry_function,
1532 rl_attempted_completion_function,
1533 rl_basic_word_break_characters, rl_special_prefixes,
1534 _rl_completion_append_character_function, rl_completion_query_items,
1535 &rl_completion_type, &rl_attempted_completion_over,
1536 &rl_point, &rl_end);
1541 static unsigned char
1542 _el_rl_complete(EditLine *el __attribute__((__unused__)), int ch)
1544 return (unsigned char)rl_complete(0, ch);
1548 * misc other functions
1552 * bind key c to readline-type function func
1555 rl_bind_key(int c, int func(int, int))
1559 if (h == NULL || e == NULL)
1562 if (func == rl_insert) {
1563 /* XXX notice there is no range checking of ``c'' */
1564 e->el_map.key[c] = ED_INSERT;
1572 * read one key from input - handles chars pushed back
1573 * to input stream also
1578 char fooarr[2 * sizeof(int)];
1580 if (e == NULL || h == NULL)
1583 return (el_getc(e, fooarr));
1588 * reset the terminal
1592 rl_reset_terminal(const char *p __attribute__((__unused__)))
1595 if (h == NULL || e == NULL)
1602 * insert character ``c'' back into input stream, ``count'' times
1605 rl_insert(int count, int c)
1609 if (h == NULL || e == NULL)
1612 /* XXX - int -> char conversion can lose on multichars */
1616 for (; count > 0; count--)
1624 rl_newline(int count, int c)
1627 * Readline-4.0 appears to ignore the args.
1629 return rl_insert(1, '\n');
1633 static unsigned char
1634 rl_bind_wrapper(EditLine *el, unsigned char c)
1643 /* If rl_done was set by the above call, deal with it here */
1651 rl_add_defun(const char *name, Function *fun, int c)
1654 if (c >= sizeof(map) / sizeof(map[0]) || c < 0)
1656 map[(unsigned char)c] = fun;
1657 el_set(e, EL_ADDFN, name, name, rl_bind_wrapper);
1658 vis(dest, c, VIS_WHITE|VIS_NOSLASH, 0);
1659 el_set(e, EL_BIND, dest, name);
1664 rl_callback_read_char()
1666 int count = 0, done = 0;
1667 const char *buf = el_gets(e, &count);
1670 if (buf == NULL || count-- <= 0)
1672 if (count == 0 && buf[0] == e->el_tty.t_c[TS_IO][C_EOF])
1674 if (buf[count] == '\n' || buf[count] == '\r')
1677 if (done && rl_linefunc != NULL) {
1678 el_set(e, EL_UNBUFFERED, 0);
1680 if ((wbuf = strdup(buf)) != NULL)
1684 (*(void (*)(const char *))rl_linefunc)(wbuf);
1685 el_set(e, EL_UNBUFFERED, 1);
1690 rl_callback_handler_install (const char *prompt, VCPFunction *linefunc)
1697 rl_prompt = prompt ? strdup(strchr(prompt, *prompt)) : NULL;
1698 rl_linefunc = linefunc;
1699 el_set(e, EL_UNBUFFERED, 1);
1703 rl_callback_handler_remove(void)
1705 el_set(e, EL_UNBUFFERED, 0);
1712 a[0] = e->el_tty.t_c[TS_IO][C_REPRINT];
1718 rl_get_previous_history(int count, int key)
1730 rl_prep_terminal(int meta_flag)
1732 el_set(e, EL_PREP_TERM, 1);
1736 rl_deprep_terminal(void)
1738 el_set(e, EL_PREP_TERM, 0);
1742 rl_read_init_file(const char *s)
1744 return(el_source(e, s));
1748 rl_parse_and_bind(const char *line)
1754 tok = tok_init(NULL);
1755 tok_str(tok, line, &argc, &argv);
1756 argc = el_parse(e, argc, argv);
1758 return (argc ? 1 : 0);
1762 rl_variable_bind(const char *var, const char *value)
1765 * The proper return value is undocument, but this is what the
1766 * readline source seems to do.
1768 return ((el_set(e, EL_BIND, "", var, value) == -1) ? 1 : 0);
1772 rl_stuff_char(int c)
1778 el_insertstr(e, buf);
1782 _rl_event_read_char(EditLine *el, char *cp)
1784 int n, num_read = 0;
1787 while (rl_event_hook) {
1791 #if defined(FIONREAD)
1792 if (ioctl(el->el_infd, FIONREAD, &n) < 0)
1795 num_read = read(el->el_infd, cp, 1);
1798 #elif defined(F_SETFL) && defined(O_NDELAY)
1799 if ((n = fcntl(el->el_infd, F_GETFL, 0)) < 0)
1801 if (fcntl(el->el_infd, F_SETFL, n|O_NDELAY) < 0)
1803 num_read = read(el->el_infd, cp, 1);
1804 if (fcntl(el->el_infd, F_SETFL, n))
1807 /* not non-blocking, but what you gonna do? */
1808 num_read = read(el->el_infd, cp, 1);
1812 if (num_read < 0 && errno == EAGAIN)
1819 el_set(el, EL_GETCFN, EL_BUILTIN_GETCFN);
1824 _rl_update_pos(void)
1826 const LineInfo *li = el_line(e);
1828 rl_point = li->cursor - li->buffer;
1829 rl_end = li->lastchar - li->buffer;
1833 rl_get_screen_size(int *rows, int *cols)
1836 el_get(e, EL_GETTC, "li", rows);
1838 el_get(e, EL_GETTC, "co", cols);
1842 rl_set_screen_size(int rows, int cols)
1845 (void)snprintf(buf, sizeof(buf), "%d", rows);
1846 el_set(e, EL_SETTC, "li", buf);
1847 (void)snprintf(buf, sizeof(buf), "%d", cols);
1848 el_set(e, EL_SETTC, "co", buf);
1852 rl_filename_completion_function (const char *text, int state)
1854 return fn_filename_completion_function(text, state);
1858 _rl_abort_internal(void)
1866 _rl_qsort_string_compare(char **s1, char **s2)
1868 return strcoll(*s1, *s2);
1873 rl_kill_text(int from, int to)
1879 rl_make_bare_keymap(void)
1892 rl_set_keymap(Keymap k)
1898 rl_generic_bind(int type, const char * keyseq, const char * data, Keymap k)
1905 rl_bind_key_in_map(int key, Function *fun, Keymap k)