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Add two missing eventhandler.h headers
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1 /*      $NetBSD: hist.c,v 1.24 2016/02/16 22:53:14 christos Exp $       */
2
3 /*-
4  * Copyright (c) 1992, 1993
5  *      The Regents of the University of California.  All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley by
8  * Christos Zoulas of Cornell University.
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  * 3. Neither the name of the University nor the names of its contributors
19  *    may be used to endorse or promote products derived from this software
20  *    without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  */
34
35 #include "config.h"
36 #if !defined(lint) && !defined(SCCSID)
37 #if 0
38 static char sccsid[] = "@(#)hist.c      8.1 (Berkeley) 6/4/93";
39 #else
40 __RCSID("$NetBSD: hist.c,v 1.24 2016/02/16 22:53:14 christos Exp $");
41 #endif
42 #endif /* not lint && not SCCSID */
43 #include <sys/cdefs.h>
44 __FBSDID("$FreeBSD$");
45
46 /*
47  * hist.c: History access functions
48  */
49 #include <stdlib.h>
50 #include <string.h>
51
52 #include "el.h"
53
54 /* hist_init():
55  *      Initialization function.
56  */
57 protected int
58 hist_init(EditLine *el)
59 {
60
61         el->el_history.fun = NULL;
62         el->el_history.ref = NULL;
63         el->el_history.buf = el_malloc(EL_BUFSIZ * sizeof(*el->el_history.buf));
64         el->el_history.sz  = EL_BUFSIZ;
65         if (el->el_history.buf == NULL)
66                 return -1;
67         el->el_history.last = el->el_history.buf;
68         return 0;
69 }
70
71
72 /* hist_end():
73  *      clean up history;
74  */
75 protected void
76 hist_end(EditLine *el)
77 {
78
79         el_free(el->el_history.buf);
80         el->el_history.buf = NULL;
81 }
82
83
84 /* hist_set():
85  *      Set new history interface
86  */
87 protected int
88 hist_set(EditLine *el, hist_fun_t fun, void *ptr)
89 {
90
91         el->el_history.ref = ptr;
92         el->el_history.fun = fun;
93         return 0;
94 }
95
96
97 /* hist_get():
98  *      Get a history line and update it in the buffer.
99  *      eventno tells us the event to get.
100  */
101 protected el_action_t
102 hist_get(EditLine *el)
103 {
104         const Char *hp;
105         int h;
106
107         if (el->el_history.eventno == 0) {      /* if really the current line */
108                 (void) Strncpy(el->el_line.buffer, el->el_history.buf,
109                     el->el_history.sz);
110                 el->el_line.lastchar = el->el_line.buffer +
111                     (el->el_history.last - el->el_history.buf);
112
113 #ifdef KSHVI
114                 if (el->el_map.type == MAP_VI)
115                         el->el_line.cursor = el->el_line.buffer;
116                 else
117 #endif /* KSHVI */
118                         el->el_line.cursor = el->el_line.lastchar;
119
120                 return CC_REFRESH;
121         }
122         if (el->el_history.ref == NULL)
123                 return CC_ERROR;
124
125         hp = HIST_FIRST(el);
126
127         if (hp == NULL)
128                 return CC_ERROR;
129
130         for (h = 1; h < el->el_history.eventno; h++)
131                 if ((hp = HIST_NEXT(el)) == NULL) {
132                         el->el_history.eventno = h;
133                         return CC_ERROR;
134                 }
135         (void) Strncpy(el->el_line.buffer, hp,
136                         (size_t)(el->el_line.limit - el->el_line.buffer));
137         el->el_line.buffer[el->el_line.limit - el->el_line.buffer - 1] = '\0';
138         el->el_line.lastchar = el->el_line.buffer + Strlen(el->el_line.buffer);
139
140         if (el->el_line.lastchar > el->el_line.buffer
141             && el->el_line.lastchar[-1] == '\n')
142                 el->el_line.lastchar--;
143         if (el->el_line.lastchar > el->el_line.buffer
144             && el->el_line.lastchar[-1] == ' ')
145                 el->el_line.lastchar--;
146 #ifdef KSHVI
147         if (el->el_map.type == MAP_VI)
148                 el->el_line.cursor = el->el_line.buffer;
149         else
150 #endif /* KSHVI */
151                 el->el_line.cursor = el->el_line.lastchar;
152
153         return CC_REFRESH;
154 }
155
156
157 /* hist_command()
158  *      process a history command
159  */
160 protected int
161 hist_command(EditLine *el, int argc, const Char **argv)
162 {
163         const Char *str;
164         int num;
165         TYPE(HistEvent) ev;
166
167         if (el->el_history.ref == NULL)
168                 return -1;
169
170         if (argc == 1 || Strcmp(argv[1], STR("list")) == 0) {
171                  /* List history entries */
172
173                 for (str = HIST_LAST(el); str != NULL; str = HIST_PREV(el))
174                         (void) fprintf(el->el_outfile, "%d %s",
175                             el->el_history.ev.num, ct_encode_string(str, &el->el_scratch));
176                 return 0;
177         }
178
179         if (argc != 3)
180                 return -1;
181
182         num = (int)Strtol(argv[2], NULL, 0);
183
184         if (Strcmp(argv[1], STR("size")) == 0)
185                 return FUNW(history)(el->el_history.ref, &ev, H_SETSIZE, num);
186
187         if (Strcmp(argv[1], STR("unique")) == 0)
188                 return FUNW(history)(el->el_history.ref, &ev, H_SETUNIQUE, num);
189
190         return -1;
191 }
192
193 /* hist_enlargebuf()
194  *      Enlarge history buffer to specified value. Called from el_enlargebufs().
195  *      Return 0 for failure, 1 for success.
196  */
197 protected int
198 /*ARGSUSED*/
199 hist_enlargebuf(EditLine *el, size_t oldsz, size_t newsz)
200 {
201         Char *newbuf;
202
203         newbuf = el_realloc(el->el_history.buf, newsz * sizeof(*newbuf));
204         if (!newbuf)
205                 return 0;
206
207         (void) memset(&newbuf[oldsz], '\0', (newsz - oldsz) * sizeof(*newbuf));
208
209         el->el_history.last = newbuf +
210                                 (el->el_history.last - el->el_history.buf);
211         el->el_history.buf = newbuf;
212         el->el_history.sz  = newsz;
213
214         return 1;
215 }
216
217 #ifdef WIDECHAR
218 protected wchar_t *
219 hist_convert(EditLine *el, int fn, void *arg)
220 {
221         HistEventW ev;
222         if ((*(el)->el_history.fun)((el)->el_history.ref, &ev, fn, arg) == -1)
223                 return NULL;
224         return ct_decode_string((const char *)(const void *)ev.str,
225             &el->el_scratch);
226 }
227 #endif