contrib/libedit/src/eln.c

   1 /*      $NetBSD: eln.c,v 1.18 2015/03/24 21:26:50 christos Exp $        */
   2
   3 /*-
   4  * Copyright (c) 2009 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *        This product includes software developed by the NetBSD
  18  *        Foundation, Inc. and its contributors.
  19  * 4. Neither the name of The NetBSD Foundation nor the names of its
  20  *    contributors may be used to endorse or promote products derived
  21  *    from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  33  * POSSIBILITY OF SUCH DAMAGE.
  34  */
  35 #include "config.h"
  36 #if !defined(lint) && !defined(SCCSID)
  37 __RCSID("$NetBSD: eln.c,v 1.18 2015/03/24 21:26:50 christos Exp $");
  38 #endif /* not lint && not SCCSID */
  39
  40 #include "histedit.h"
  41 #include "el.h"
  42 #include "read.h"
  43 #include <stdarg.h>
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46
  47 public int
  48 el_getc(EditLine *el, char *cp)
  49 {
  50         int num_read;
  51         wchar_t wc = 0;
  52
  53         if (!(el->el_flags & CHARSET_IS_UTF8))
  54                 el->el_flags |= IGNORE_EXTCHARS;
  55         num_read = el_wgetc (el, &wc);
  56         if (!(el->el_flags & CHARSET_IS_UTF8))
  57                 el->el_flags &= ~IGNORE_EXTCHARS;
  58
  59         if (num_read > 0)
  60                 *cp = (char)wc;
  61         return num_read;
  62 }
  63
  64
  65 public void
  66 el_push(EditLine *el, const char *str)
  67 {
  68         /* Using multibyte->wide string decoding works fine under single-byte
  69          * character sets too, and Does The Right Thing. */
  70         el_wpush(el, ct_decode_string(str, &el->el_lgcyconv));
  71 }
  72
  73
  74 public const char *
  75 el_gets(EditLine *el, int *nread)
  76 {
  77         const wchar_t *tmp;
  78         int nwread;
  79
  80         *nread = 0;
  81
  82         if (!(el->el_flags & CHARSET_IS_UTF8))
  83                 el->el_flags |= IGNORE_EXTCHARS;
  84         tmp = el_wgets(el, &nwread);
  85         if (!(el->el_flags & CHARSET_IS_UTF8))
  86                 el->el_flags &= ~IGNORE_EXTCHARS;
  87         for (int i = 0; i < nwread; i++)
  88                 *nread += ct_enc_width(tmp[i]);
  89         return ct_encode_string(tmp, &el->el_lgcyconv);
  90 }
  91
  92
  93 public int
  94 el_parse(EditLine *el, int argc, const char *argv[])
  95 {
  96         int ret;
  97         const wchar_t **wargv;
  98
  99         wargv = (const wchar_t **)
 100             ct_decode_argv(argc, argv, &el->el_lgcyconv);
 101         if (!wargv)
 102                 return -1;
 103         ret = el_wparse(el, argc, wargv);
 104         ct_free_argv(wargv);
 105
 106         return ret;
 107 }
 108
 109
 110 public int
 111 el_set(EditLine *el, int op, ...)
 112 {
 113         va_list ap;
 114         int ret;
 115
 116         if (!el)
 117                 return -1;
 118         va_start(ap, op);
 119
 120         switch (op) {
 121         case EL_PROMPT:         /* el_pfunc_t */
 122         case EL_RPROMPT: {
 123                 el_pfunc_t p = va_arg(ap, el_pfunc_t);
 124                 ret = prompt_set(el, p, 0, op, 0);
 125                 break;
 126         }
 127
 128         case EL_RESIZE: {
 129                 el_zfunc_t p = va_arg(ap, el_zfunc_t);
 130                 void *arg = va_arg(ap, void *);
 131                 ret = ch_resizefun(el, p, arg);
 132                 break;
 133         }
 134
 135         case EL_ALIAS_TEXT: {
 136                 el_afunc_t p = va_arg(ap, el_afunc_t);
 137                 void *arg = va_arg(ap, void *);
 138                 ret = ch_aliasfun(el, p, arg);
 139                 break;
 140         }
 141
 142         case EL_PROMPT_ESC:
 143         case EL_RPROMPT_ESC: {
 144                 el_pfunc_t p = va_arg(ap, el_pfunc_t);
 145                 int c = va_arg(ap, int);
 146
 147                 ret = prompt_set(el, p, c, op, 0);
 148                 break;
 149         }
 150
 151         case EL_TERMINAL:       /* const char * */
 152                 ret = el_wset(el, op, va_arg(ap, char *));
 153                 break;
 154
 155         case EL_EDITOR:         /* const wchar_t * */
 156                 ret = el_wset(el, op, ct_decode_string(va_arg(ap, char *),
 157                     &el->el_lgcyconv));
 158                 break;
 159
 160         case EL_SIGNAL:         /* int */
 161         case EL_EDITMODE:
 162         case EL_UNBUFFERED:
 163         case EL_PREP_TERM:
 164                 ret = el_wset(el, op, va_arg(ap, int));
 165                 break;
 166
 167         case EL_BIND:   /* const char * list -> const wchar_t * list */
 168         case EL_TELLTC:
 169         case EL_SETTC:
 170         case EL_ECHOTC:
 171         case EL_SETTY: {
 172                 const char *argv[20];
 173                 int i;
 174                 const wchar_t **wargv;
 175                 for (i = 1; i < (int)__arraycount(argv) - 1; ++i)
 176                         if ((argv[i] = va_arg(ap, const char *)) == NULL)
 177                             break;
 178                 argv[0] = argv[i] = NULL;
 179                 wargv = (const wchar_t **)
 180                     ct_decode_argv(i + 1, argv, &el->el_lgcyconv);
 181                 if (!wargv) {
 182                     ret = -1;
 183                     goto out;
 184                 }
 185                 /*
 186                  * AFAIK we can't portably pass through our new wargv to
 187                  * el_wset(), so we have to reimplement the body of
 188                  * el_wset() for these ops.
 189                  */
 190                 switch (op) {
 191                 case EL_BIND:
 192                         wargv[0] = STR("bind");
 193                         ret = map_bind(el, i, wargv);
 194                         break;
 195                 case EL_TELLTC:
 196                         wargv[0] = STR("telltc");
 197                         ret = terminal_telltc(el, i, wargv);
 198                         break;
 199                 case EL_SETTC:
 200                         wargv[0] = STR("settc");
 201                         ret = terminal_settc(el, i, wargv);
 202                         break;
 203                 case EL_ECHOTC:
 204                         wargv[0] = STR("echotc");
 205                         ret = terminal_echotc(el, i, wargv);
 206                         break;
 207                 case EL_SETTY:
 208                         wargv[0] = STR("setty");
 209                         ret = tty_stty(el, i, wargv);
 210                         break;
 211                 default:
 212                         ret = -1;
 213                 }
 214                 ct_free_argv(wargv);
 215                 break;
 216         }
 217
 218         /* XXX: do we need to change el_func_t too? */
 219         case EL_ADDFN: {          /* const char *, const char *, el_func_t */
 220                 const char *args[2];
 221                 el_func_t func;
 222                 wchar_t **wargv;
 223
 224                 args[0] = va_arg(ap, const char *);
 225                 args[1] = va_arg(ap, const char *);
 226                 func = va_arg(ap, el_func_t);
 227
 228                 wargv = ct_decode_argv(2, args, &el->el_lgcyconv);
 229                 if (!wargv) {
 230                     ret = -1;
 231                     goto out;
 232                 }
 233                 // XXX: The two strdup's leak
 234                 ret = map_addfunc(el, Strdup(wargv[0]), Strdup(wargv[1]),
 235                     func);
 236                 ct_free_argv(wargv);
 237                 break;
 238         }
 239         case EL_HIST: {           /* hist_fun_t, const char * */
 240                 hist_fun_t fun = va_arg(ap, hist_fun_t);
 241                 void *ptr = va_arg(ap, void *);
 242                 ret = hist_set(el, fun, ptr);
 243                 el->el_flags |= NARROW_HISTORY;
 244                 break;
 245         }
 246
 247         /* XXX: do we need to change el_rfunc_t? */
 248         case EL_GETCFN:         /* el_rfunc_t */
 249                 ret = el_wset(el, op, va_arg(ap, el_rfunc_t));
 250                 el->el_flags |= NARROW_READ;
 251                 break;
 252
 253         case EL_CLIENTDATA:     /* void * */
 254                 ret = el_wset(el, op, va_arg(ap, void *));
 255                 break;
 256
 257         case EL_SETFP: {          /* int, FILE * */
 258                 int what = va_arg(ap, int);
 259                 FILE *fp = va_arg(ap, FILE *);
 260                 ret = el_wset(el, op, what, fp);
 261                 break;
 262         }
 263
 264         case EL_REFRESH:
 265                 re_clear_display(el);
 266                 re_refresh(el);
 267                 terminal__flush(el);
 268                 ret = 0;
 269                 break;
 270
 271         default:
 272                 ret = -1;
 273                 break;
 274         }
 275
 276 out:
 277         va_end(ap);
 278         return ret;
 279 }
 280
 281
 282 public int
 283 el_get(EditLine *el, int op, ...)
 284 {
 285         va_list ap;
 286         int ret;
 287
 288         if (!el)
 289                 return -1;
 290
 291         va_start(ap, op);
 292
 293         switch (op) {
 294         case EL_PROMPT:         /* el_pfunc_t * */
 295         case EL_RPROMPT: {
 296                 el_pfunc_t *p = va_arg(ap, el_pfunc_t *);
 297                 ret = prompt_get(el, p, 0, op);
 298                 break;
 299         }
 300
 301         case EL_PROMPT_ESC: /* el_pfunc_t *, char **/
 302         case EL_RPROMPT_ESC: {
 303                 el_pfunc_t *p = va_arg(ap, el_pfunc_t *);
 304                 char *c = va_arg(ap, char *);
 305                 wchar_t wc = 0;
 306                 ret = prompt_get(el, p, &wc, op);
 307                 *c = (char)wc;
 308                 break;
 309         }
 310
 311         case EL_EDITOR: {
 312                 const char **p = va_arg(ap, const char **);
 313                 const wchar_t *pw;
 314                 ret = el_wget(el, op, &pw);
 315                 *p = ct_encode_string(pw, &el->el_lgcyconv);
 316                 if (!el->el_lgcyconv.csize)
 317                         ret = -1;
 318                 break;
 319         }
 320
 321         case EL_TERMINAL:       /* const char ** */
 322                 ret = el_wget(el, op, va_arg(ap, const char **));
 323                 break;
 324
 325         case EL_SIGNAL:         /* int * */
 326         case EL_EDITMODE:
 327         case EL_UNBUFFERED:
 328         case EL_PREP_TERM:
 329                 ret = el_wget(el, op, va_arg(ap, int *));
 330                 break;
 331
 332         case EL_GETTC: {
 333                 char *argv[20];
 334                 static char gettc[] = "gettc";
 335                 int i;
 336                 for (i = 1; i < (int)__arraycount(argv); ++i)
 337                         if ((argv[i] = va_arg(ap, char *)) == NULL)
 338                                 break;
 339                 argv[0] = gettc;
 340                 ret = terminal_gettc(el, i, argv);
 341                 break;
 342         }
 343
 344         /* XXX: do we need to change el_rfunc_t? */
 345         case EL_GETCFN:         /* el_rfunc_t */
 346                 ret = el_wget(el, op, va_arg(ap, el_rfunc_t *));
 347                 break;
 348
 349         case EL_CLIENTDATA:     /* void ** */
 350                 ret = el_wget(el, op, va_arg(ap, void **));
 351                 break;
 352
 353         case EL_GETFP: {          /* int, FILE ** */
 354                 int what = va_arg(ap, int);
 355                 FILE **fpp = va_arg(ap, FILE **);
 356                 ret = el_wget(el, op, what, fpp);
 357                 break;
 358         }
 359
 360         default:
 361                 ret = -1;
 362                 break;
 363         }
 364
 365         va_end(ap);
 366         return ret;
 367 }
 368
 369
 370 const LineInfo *
 371 el_line(EditLine *el)
 372 {
 373         const LineInfoW *winfo = el_wline(el);
 374         LineInfo *info = &el->el_lgcylinfo;
 375         size_t offset;
 376         const Char *p;
 377
 378         info->buffer   = ct_encode_string(winfo->buffer, &el->el_lgcyconv);
 379
 380         offset = 0;
 381         for (p = winfo->buffer; p < winfo->cursor; p++)
 382                 offset += ct_enc_width(*p);
 383         info->cursor = info->buffer + offset;
 384
 385         offset = 0;
 386         for (p = winfo->buffer; p < winfo->lastchar; p++)
 387                 offset += ct_enc_width(*p);
 388         info->lastchar = info->buffer + offset;
 389
 390         return info;
 391 }
 392
 393
 394 int
 395 el_insertstr(EditLine *el, const char *str)
 396 {
 397         return el_winsertstr(el, ct_decode_string(str, &el->el_lgcyconv));
 398 }