lib/libedit/TEST/test.c

   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  * @(#)test.c   8.1 (Berkeley) 6/4/93
  33  * $NetBSD: test.c,v 1.18 2005/06/01 11:37:52 lukem Exp $
  34  * $DragonFly: src/lib/libedit/TEST/test.c,v 1.3 2005/11/13 11:58:30 corecode Exp $
  35  */
  36
  37 #include "config.h"
  38 #ifndef lint
  39 __COPYRIGHT("@(#) Copyright (c) 1992, 1993\n\
  40         The Regents of the University of California.  All rights reserved.\n");
  41 #endif /* not lint */
  42
  43 /*
  44  * test.c: A little test program
  45  */
  46 #include <stdio.h>
  47 #include <string.h>
  48 #include <signal.h>
  49 #include <sys/wait.h>
  50 #include <ctype.h>
  51 #include <stdlib.h>
  52 #include <unistd.h>
  53 #include <dirent.h>
  54
  55 #include "histedit.h"
  56
  57 static int continuation = 0;
  58 volatile sig_atomic_t gotsig = 0;
  59
  60 static  unsigned char   complete(EditLine *, int);
  61         int     main(int, char **);
  62 static  char   *prompt(EditLine *);
  63 static  void    sig(int);
  64
  65 static char *
  66 prompt(EditLine *el)
  67 {
  68         static char a[] = "Edit$ ";
  69         static char b[] = "Edit> ";
  70
  71         return (continuation ? b : a);
  72 }
  73
  74 static void
  75 sig(int i)
  76 {
  77         gotsig = i;
  78 }
  79
  80 static unsigned char
  81 complete(EditLine *el, int ch)
  82 {
  83         DIR *dd = opendir(".");
  84         struct dirent *dp;
  85         const char* ptr;
  86         const LineInfo *lf = el_line(el);
  87         int len;
  88
  89         /*
  90          * Find the last word
  91          */
  92         for (ptr = lf->cursor - 1;
  93             !isspace((unsigned char)*ptr) && ptr > lf->buffer; ptr--)
  94                 continue;
  95         len = lf->cursor - ++ptr;
  96
  97         for (dp = readdir(dd); dp != NULL; dp = readdir(dd)) {
  98                 if (len > strlen(dp->d_name))
  99                         continue;
 100                 if (strncmp(dp->d_name, ptr, len) == 0) {
 101                         closedir(dd);
 102                         if (el_insertstr(el, &dp->d_name[len]) == -1)
 103                                 return (CC_ERROR);
 104                         else
 105                                 return (CC_REFRESH);
 106                 }
 107         }
 108
 109         closedir(dd);
 110         return (CC_ERROR);
 111 }
 112
 113 int
 114 main(int argc, char *argv[])
 115 {
 116         EditLine *el = NULL;
 117         int num;
 118         const char *buf;
 119         Tokenizer *tok;
 120 #if 0
 121         int lastevent = 0;
 122 #endif
 123         int ncontinuation;
 124         History *hist;
 125         HistEvent ev;
 126
 127         (void) signal(SIGINT, sig);
 128         (void) signal(SIGQUIT, sig);
 129         (void) signal(SIGHUP, sig);
 130         (void) signal(SIGTERM, sig);
 131
 132         hist = history_init();          /* Init the builtin history     */
 133                                         /* Remember 100 events          */
 134         history(hist, &ev, H_SETSIZE, 100);
 135
 136         tok  = tok_init(NULL);          /* Initialize the tokenizer     */
 137
 138                                         /* Initialize editline          */
 139         el = el_init(*argv, stdin, stdout, stderr);
 140
 141         el_set(el, EL_EDITOR, "vi");    /* Default editor is vi         */
 142         el_set(el, EL_SIGNAL, 1);       /* Handle signals gracefully    */
 143         el_set(el, EL_PROMPT, prompt);  /* Set the prompt function      */
 144
 145                         /* Tell editline to use this history interface  */
 146         el_set(el, EL_HIST, history, hist);
 147
 148                                         /* Add a user-defined function  */
 149         el_set(el, EL_ADDFN, "ed-complete", "Complete argument", complete);
 150
 151                                         /* Bind tab to it               */
 152         el_set(el, EL_BIND, "^I", "ed-complete", NULL);
 153
 154         /*
 155          * Bind j, k in vi command mode to previous and next line, instead
 156          * of previous and next history.
 157          */
 158         el_set(el, EL_BIND, "-a", "k", "ed-prev-line", NULL);
 159         el_set(el, EL_BIND, "-a", "j", "ed-next-line", NULL);
 160
 161         /*
 162          * Source the user's defaults file.
 163          */
 164         el_source(el, NULL);
 165
 166         while ((buf = el_gets(el, &num)) != NULL && num != 0)  {
 167                 int ac, cc, co;
 168 #ifdef DEBUG
 169                 int i;
 170 #endif
 171                 const char **av;
 172                 const LineInfo *li;
 173                 li = el_line(el);
 174 #ifdef DEBUG
 175                 (void) fprintf(stderr, "==> got %d %s", num, buf);
 176                 (void) fprintf(stderr, "  > li `%.*s_%.*s'\n",
 177                     (li->cursor - li->buffer), li->buffer,
 178                     (li->lastchar - 1 - li->cursor),
 179                     (li->cursor >= li->lastchar) ? "" : li->cursor);
 180
 181 #endif
 182                 if (gotsig) {
 183                         (void) fprintf(stderr, "Got signal %d.\n", gotsig);
 184                         gotsig = 0;
 185                         el_reset(el);
 186                 }
 187
 188                 if (!continuation && num == 1)
 189                         continue;
 190
 191                 ac = cc = co = 0;
 192                 ncontinuation = tok_line(tok, li, &ac, &av, &cc, &co);
 193                 if (ncontinuation < 0) {
 194                         (void) fprintf(stderr, "Internal error\n");
 195                         continuation = 0;
 196                         continue;
 197                 }
 198 #ifdef DEBUG
 199                 (void) fprintf(stderr, "  > nc %d ac %d cc %d co %d\n",
 200                     ncontinuation, ac, cc, co);
 201 #endif
 202 #if 0
 203                 if (continuation) {
 204                         /*
 205                          * Append to the right event in case the user
 206                          * moved around in history.
 207                          */
 208                         if (history(hist, &ev, H_SET, lastevent) == -1)
 209                                 err(1, "%d: %s", lastevent, ev.str);
 210                         history(hist, &ev, H_ADD , buf);
 211                 } else {
 212                         history(hist, &ev, H_ENTER, buf);
 213                         lastevent = ev.num;
 214                 }
 215 #else
 216                                 /* Simpler */
 217                 history(hist, &ev, continuation ? H_APPEND : H_ENTER, buf);
 218 #endif
 219
 220                 continuation = ncontinuation;
 221                 ncontinuation = 0;
 222                 if (continuation)
 223                         continue;
 224 #ifdef DEBUG
 225                 for (i = 0; i < ac; i++) {
 226                         (void) fprintf(stderr, "  > arg# %2d ", i);
 227                         if (i != cc)
 228                                 (void) fprintf(stderr, "`%s'\n", av[i]);
 229                         else
 230                                 (void) fprintf(stderr, "`%.*s_%s'\n",
 231                                     co, av[i], av[i] + co);
 232                 }
 233 #endif
 234
 235                 if (strcmp(av[0], "history") == 0) {
 236                         int rv;
 237
 238                         switch (ac) {
 239                         case 1:
 240                                 for (rv = history(hist, &ev, H_LAST); rv != -1;
 241                                     rv = history(hist, &ev, H_PREV))
 242                                         (void) fprintf(stdout, "%4d %s",
 243                                             ev.num, ev.str);
 244                                 break;
 245
 246                         case 2:
 247                                 if (strcmp(av[1], "clear") == 0)
 248                                          history(hist, &ev, H_CLEAR);
 249                                 else
 250                                          goto badhist;
 251                                 break;
 252
 253                         case 3:
 254                                 if (strcmp(av[1], "load") == 0)
 255                                          history(hist, &ev, H_LOAD, av[2]);
 256                                 else if (strcmp(av[1], "save") == 0)
 257                                          history(hist, &ev, H_SAVE, av[2]);
 258                                 break;
 259
 260                         badhist:
 261                         default:
 262                                 (void) fprintf(stderr,
 263                                     "Bad history arguments\n");
 264                                 break;
 265                         }
 266                 } else if (el_parse(el, ac, av) == -1) {
 267                         switch (fork()) {
 268                         case 0:
 269                                 execvp(av[0], (char *const *)(void *)(unsigned long)(const void *)(av));
 270                                 perror(av[0]);
 271                                 _exit(1);
 272                                 /*NOTREACHED*/
 273                                 break;
 274
 275                         case -1:
 276                                 perror("fork");
 277                                 break;
 278
 279                         default:
 280                                 if (wait(&num) == -1)
 281                                         perror("wait");
 282                                 (void) fprintf(stderr, "Exit %x\n", num);
 283                                 break;
 284                         }
 285                 }
 286
 287                 tok_reset(tok);
 288         }
 289
 290         el_end(el);
 291         tok_end(tok);
 292         history_end(hist);
 293
 294         return (0);
 295 }