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1 /*-
2  * Copyright (c) 1992, 1993
3  *      The Regents of the University of California.  All rights reserved.
4  *
5  * This code is derived from software contributed to Berkeley by
6  * Christos Zoulas of Cornell University.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
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 University nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  */
32
33 #include <sys/cdefs.h>
34 #ifndef lint
35 __COPYRIGHT("@(#) Copyright (c) 1992, 1993\n\
36         The Regents of the University of California.  All rights reserved.\n");
37 #endif /* not lint */
38
39 #if !defined(lint) && !defined(SCCSID)
40 static char sccsid[] = "@(#)test.c      8.1 (Berkeley) 6/4/93";
41 #endif /* not lint && not SCCSID */
42 __RCSID("$NetBSD: test.c,v 1.18 2005/06/01 11:37:52 lukem Exp $");
43 __FBSDID("$FreeBSD$");
44
45 /*
46  * test.c: A little test program
47  */
48 #include "sys.h"
49 #include <stdio.h>
50 #include <string.h>
51 #include <signal.h>
52 #include <sys/wait.h>
53 #include <ctype.h>
54 #include <stdlib.h>
55 #include <unistd.h>
56 #include <dirent.h>
57
58 #include "histedit.h"
59
60 static int continuation = 0;
61 volatile sig_atomic_t gotsig = 0;
62
63 static  unsigned char   complete(EditLine *, int);
64         int     main(int, char **);
65 static  char   *prompt(EditLine *);
66 static  void    sig(int);
67
68 static char *
69 prompt(EditLine *el)
70 {
71         static char a[] = "Edit$ ";
72         static char b[] = "Edit> ";
73
74         return (continuation ? b : a);
75 }
76
77 static void
78 sig(int i)
79 {
80         gotsig = i;
81 }
82
83 static unsigned char
84 complete(EditLine *el, int ch)
85 {
86         DIR *dd = opendir(".");
87         struct dirent *dp;
88         const char* ptr;
89         const LineInfo *lf = el_line(el);
90         int len;
91
92         /*
93          * Find the last word
94          */
95         for (ptr = lf->cursor - 1;
96             !isspace((unsigned char)*ptr) && ptr > lf->buffer; ptr--)
97                 continue;
98         len = lf->cursor - ++ptr;
99
100         for (dp = readdir(dd); dp != NULL; dp = readdir(dd)) {
101                 if (len > strlen(dp->d_name))
102                         continue;
103                 if (strncmp(dp->d_name, ptr, len) == 0) {
104                         closedir(dd);
105                         if (el_insertstr(el, &dp->d_name[len]) == -1)
106                                 return (CC_ERROR);
107                         else
108                                 return (CC_REFRESH);
109                 }
110         }
111
112         closedir(dd);
113         return (CC_ERROR);
114 }
115
116 int
117 main(int argc, char *argv[])
118 {
119         EditLine *el = NULL;
120         int num;
121         const char *buf;
122         Tokenizer *tok;
123 #if 0
124         int lastevent = 0;
125 #endif
126         int ncontinuation;
127         History *hist;
128         HistEvent ev;
129
130         (void) signal(SIGINT, sig);
131         (void) signal(SIGQUIT, sig);
132         (void) signal(SIGHUP, sig);
133         (void) signal(SIGTERM, sig);
134
135         hist = history_init();          /* Init the builtin history     */
136                                         /* Remember 100 events          */
137         history(hist, &ev, H_SETSIZE, 100);
138
139         tok  = tok_init(NULL);          /* Initialize the tokenizer     */
140
141                                         /* Initialize editline          */
142         el = el_init(*argv, stdin, stdout, stderr);
143
144         el_set(el, EL_EDITOR, "vi");    /* Default editor is vi         */
145         el_set(el, EL_SIGNAL, 1);       /* Handle signals gracefully    */
146         el_set(el, EL_PROMPT, prompt);  /* Set the prompt function      */
147
148                         /* Tell editline to use this history interface  */
149         el_set(el, EL_HIST, history, hist);
150
151                                         /* Add a user-defined function  */
152         el_set(el, EL_ADDFN, "ed-complete", "Complete argument", complete);
153
154                                         /* Bind tab to it               */
155         el_set(el, EL_BIND, "^I", "ed-complete", NULL);
156
157         /*
158          * Bind j, k in vi command mode to previous and next line, instead
159          * of previous and next history.
160          */
161         el_set(el, EL_BIND, "-a", "k", "ed-prev-line", NULL);
162         el_set(el, EL_BIND, "-a", "j", "ed-next-line", NULL);
163
164         /*
165          * Source the user's defaults file.
166          */
167         el_source(el, NULL);
168
169         while ((buf = el_gets(el, &num)) != NULL && num != 0)  {
170                 int ac, cc, co;
171 #ifdef DEBUG
172                 int i;
173 #endif
174                 const char **av;
175                 const LineInfo *li;
176                 li = el_line(el);
177 #ifdef DEBUG
178                 (void) fprintf(stderr, "==> got %d %s", num, buf);
179                 (void) fprintf(stderr, "  > li `%.*s_%.*s'\n",
180                     (li->cursor - li->buffer), li->buffer,
181                     (li->lastchar - 1 - li->cursor),
182                     (li->cursor >= li->lastchar) ? "" : li->cursor);
183
184 #endif
185                 if (gotsig) {
186                         (void) fprintf(stderr, "Got signal %d.\n", gotsig);
187                         gotsig = 0;
188                         el_reset(el);
189                 }
190
191                 if (!continuation && num == 1)
192                         continue;
193
194                 ac = cc = co = 0;
195                 ncontinuation = tok_line(tok, li, &ac, &av, &cc, &co);
196                 if (ncontinuation < 0) {
197                         (void) fprintf(stderr, "Internal error\n");
198                         continuation = 0;
199                         continue;
200                 }
201 #ifdef DEBUG
202                 (void) fprintf(stderr, "  > nc %d ac %d cc %d co %d\n",
203                     ncontinuation, ac, cc, co);
204 #endif
205 #if 0
206                 if (continuation) {
207                         /*
208                          * Append to the right event in case the user
209                          * moved around in history.
210                          */
211                         if (history(hist, &ev, H_SET, lastevent) == -1)
212                                 err(1, "%d: %s", lastevent, ev.str);
213                         history(hist, &ev, H_ADD , buf);
214                 } else {
215                         history(hist, &ev, H_ENTER, buf);
216                         lastevent = ev.num;
217                 }
218 #else
219                                 /* Simpler */
220                 history(hist, &ev, continuation ? H_APPEND : H_ENTER, buf);
221 #endif
222
223                 continuation = ncontinuation;
224                 ncontinuation = 0;
225                 if (continuation)
226                         continue;
227 #ifdef DEBUG
228                 for (i = 0; i < ac; i++) {
229                         (void) fprintf(stderr, "  > arg# %2d ", i);
230                         if (i != cc)
231                                 (void) fprintf(stderr, "`%s'\n", av[i]);
232                         else
233                                 (void) fprintf(stderr, "`%.*s_%s'\n",
234                                     co, av[i], av[i] + co);
235                 }
236 #endif
237
238                 if (strcmp(av[0], "history") == 0) {
239                         int rv;
240
241                         switch (ac) {
242                         case 1:
243                                 for (rv = history(hist, &ev, H_LAST); rv != -1;
244                                     rv = history(hist, &ev, H_PREV))
245                                         (void) fprintf(stdout, "%4d %s",
246                                             ev.num, ev.str);
247                                 break;
248
249                         case 2:
250                                 if (strcmp(av[1], "clear") == 0)
251                                          history(hist, &ev, H_CLEAR);
252                                 else
253                                          goto badhist;
254                                 break;
255
256                         case 3:
257                                 if (strcmp(av[1], "load") == 0)
258                                          history(hist, &ev, H_LOAD, av[2]);
259                                 else if (strcmp(av[1], "save") == 0)
260                                          history(hist, &ev, H_SAVE, av[2]);
261                                 break;
262
263                         badhist:
264                         default:
265                                 (void) fprintf(stderr,
266                                     "Bad history arguments\n");
267                                 break;
268                         }
269                 } else if (el_parse(el, ac, av) == -1) {
270                         switch (fork()) {
271                         case 0:
272                                 execvp(av[0], __DECONST(char *const *, av));
273                                 perror(av[0]);
274                                 _exit(1);
275                                 /*NOTREACHED*/
276                                 break;
277
278                         case -1:
279                                 perror("fork");
280                                 break;
281
282                         default:
283                                 if (wait(&num) == -1)
284                                         perror("wait");
285                                 (void) fprintf(stderr, "Exit %x\n", num);
286                                 break;
287                         }
288                 }
289
290                 tok_reset(tok);
291         }
292
293         el_end(el);
294         tok_end(tok);
295         history_end(hist);
296
297         return (0);
298 }