1 /* $NetBSD: eln.c,v 1.17 2014/06/18 18:12:28 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 1.17 2014/06/18 18:12:28 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 79 el->el_flags |= IGNORE_EXTCHARS; 80 tmp = el_wgets(el, nread); 81 el->el_flags &= ~IGNORE_EXTCHARS; 82 return ct_encode_string(tmp, &el->el_lgcyconv); 83 } 84 85 86 public int 87 el_parse(EditLine *el, int argc, const char *argv[]) 88 { 89 int ret; 90 const wchar_t **wargv; 91 92 wargv = (const wchar_t **) 93 ct_decode_argv(argc, argv, &el->el_lgcyconv); 94 if (!wargv) 95 return -1; 96 ret = el_wparse(el, argc, wargv); 97 ct_free_argv(wargv); 98 99 return ret; 100 } 101 102 103 public int 104 el_set(EditLine *el, int op, ...) 105 { 106 va_list ap; 107 int ret; 108 109 if (!el) 110 return -1; 111 va_start(ap, op); 112 113 switch (op) { 114 case EL_PROMPT: /* el_pfunc_t */ 115 case EL_RPROMPT: { 116 el_pfunc_t p = va_arg(ap, el_pfunc_t); 117 ret = prompt_set(el, p, 0, op, 0); 118 break; 119 } 120 121 case EL_RESIZE: { 122 el_zfunc_t p = va_arg(ap, el_zfunc_t); 123 void *arg = va_arg(ap, void *); 124 ret = ch_resizefun(el, p, arg); 125 break; 126 } 127 128 case EL_ALIAS_TEXT: { 129 el_afunc_t p = va_arg(ap, el_afunc_t); 130 void *arg = va_arg(ap, void *); 131 ret = ch_aliasfun(el, p, arg); 132 break; 133 } 134 135 case EL_PROMPT_ESC: 136 case EL_RPROMPT_ESC: { 137 el_pfunc_t p = va_arg(ap, el_pfunc_t); 138 int c = va_arg(ap, int); 139 140 ret = prompt_set(el, p, c, op, 0); 141 break; 142 } 143 144 case EL_TERMINAL: /* const char * */ 145 ret = el_wset(el, op, va_arg(ap, char *)); 146 break; 147 148 case EL_EDITOR: /* const wchar_t * */ 149 ret = el_wset(el, op, ct_decode_string(va_arg(ap, char *), 150 &el->el_lgcyconv)); 151 break; 152 153 case EL_SIGNAL: /* int */ 154 case EL_EDITMODE: 155 case EL_UNBUFFERED: 156 case EL_PREP_TERM: 157 ret = el_wset(el, op, va_arg(ap, int)); 158 break; 159 160 case EL_BIND: /* const char * list -> const wchar_t * list */ 161 case EL_TELLTC: 162 case EL_SETTC: 163 case EL_ECHOTC: 164 case EL_SETTY: { 165 const char *argv[20]; 166 int i; 167 const wchar_t **wargv; 168 for (i = 1; i < (int)__arraycount(argv) - 1; ++i) 169 if ((argv[i] = va_arg(ap, const char *)) == NULL) 170 break; 171 argv[0] = argv[i] = NULL; 172 wargv = (const wchar_t **) 173 ct_decode_argv(i + 1, argv, &el->el_lgcyconv); 174 if (!wargv) { 175 ret = -1; 176 goto out; 177 } 178 /* 179 * AFAIK we can't portably pass through our new wargv to 180 * el_wset(), so we have to reimplement the body of 181 * el_wset() for these ops. 182 */ 183 switch (op) { 184 case EL_BIND: 185 wargv[0] = STR("bind"); 186 ret = map_bind(el, i, wargv); 187 break; 188 case EL_TELLTC: 189 wargv[0] = STR("telltc"); 190 ret = terminal_telltc(el, i, wargv); 191 break; 192 case EL_SETTC: 193 wargv[0] = STR("settc"); 194 ret = terminal_settc(el, i, wargv); 195 break; 196 case EL_ECHOTC: 197 wargv[0] = STR("echotc"); 198 ret = terminal_echotc(el, i, wargv); 199 break; 200 case EL_SETTY: 201 wargv[0] = STR("setty"); 202 ret = tty_stty(el, i, wargv); 203 break; 204 default: 205 ret = -1; 206 } 207 ct_free_argv(wargv); 208 break; 209 } 210 211 /* XXX: do we need to change el_func_t too? */ 212 case EL_ADDFN: { /* const char *, const char *, el_func_t */ 213 const char *args[2]; 214 el_func_t func; 215 wchar_t **wargv; 216 217 args[0] = va_arg(ap, const char *); 218 args[1] = va_arg(ap, const char *); 219 func = va_arg(ap, el_func_t); 220 221 wargv = ct_decode_argv(2, args, &el->el_lgcyconv); 222 if (!wargv) { 223 ret = -1; 224 goto out; 225 } 226 // XXX: The two strdup's leak 227 ret = map_addfunc(el, Strdup(wargv[0]), Strdup(wargv[1]), 228 func); 229 ct_free_argv(wargv); 230 break; 231 } 232 case EL_HIST: { /* hist_fun_t, const char * */ 233 hist_fun_t fun = va_arg(ap, hist_fun_t); 234 void *ptr = va_arg(ap, void *); 235 ret = hist_set(el, fun, ptr); 236 el->el_flags |= NARROW_HISTORY; 237 break; 238 } 239 240 /* XXX: do we need to change el_rfunc_t? */ 241 case EL_GETCFN: /* el_rfunc_t */ 242 ret = el_wset(el, op, va_arg(ap, el_rfunc_t)); 243 el->el_flags |= NARROW_READ; 244 break; 245 246 case EL_CLIENTDATA: /* void * */ 247 ret = el_wset(el, op, va_arg(ap, void *)); 248 break; 249 250 case EL_SETFP: { /* int, FILE * */ 251 int what = va_arg(ap, int); 252 FILE *fp = va_arg(ap, FILE *); 253 ret = el_wset(el, op, what, fp); 254 break; 255 } 256 257 case EL_REFRESH: 258 re_clear_display(el); 259 re_refresh(el); 260 terminal__flush(el); 261 ret = 0; 262 break; 263 264 default: 265 ret = -1; 266 break; 267 } 268 269 out: 270 va_end(ap); 271 return ret; 272 } 273 274 275 public int 276 el_get(EditLine *el, int op, ...) 277 { 278 va_list ap; 279 int ret; 280 281 if (!el) 282 return -1; 283 284 va_start(ap, op); 285 286 switch (op) { 287 case EL_PROMPT: /* el_pfunc_t * */ 288 case EL_RPROMPT: { 289 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 290 ret = prompt_get(el, p, 0, op); 291 break; 292 } 293 294 case EL_PROMPT_ESC: /* el_pfunc_t *, char **/ 295 case EL_RPROMPT_ESC: { 296 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 297 char *c = va_arg(ap, char *); 298 wchar_t wc = 0; 299 ret = prompt_get(el, p, &wc, op); 300 *c = (char)wc; 301 break; 302 } 303 304 case EL_EDITOR: { 305 const char **p = va_arg(ap, const char **); 306 const wchar_t *pw; 307 ret = el_wget(el, op, &pw); 308 *p = ct_encode_string(pw, &el->el_lgcyconv); 309 if (!el->el_lgcyconv.csize) 310 ret = -1; 311 break; 312 } 313 314 case EL_TERMINAL: /* const char ** */ 315 ret = el_wget(el, op, va_arg(ap, const char **)); 316 break; 317 318 case EL_SIGNAL: /* int * */ 319 case EL_EDITMODE: 320 case EL_UNBUFFERED: 321 case EL_PREP_TERM: 322 ret = el_wget(el, op, va_arg(ap, int *)); 323 break; 324 325 case EL_GETTC: { 326 char *argv[20]; 327 static char gettc[] = "gettc"; 328 int i; 329 for (i = 1; i < (int)__arraycount(argv); ++i) 330 if ((argv[i] = va_arg(ap, char *)) == NULL) 331 break; 332 argv[0] = gettc; 333 ret = terminal_gettc(el, i, argv); 334 break; 335 } 336 337 /* XXX: do we need to change el_rfunc_t? */ 338 case EL_GETCFN: /* el_rfunc_t */ 339 ret = el_wget(el, op, va_arg(ap, el_rfunc_t *)); 340 break; 341 342 case EL_CLIENTDATA: /* void ** */ 343 ret = el_wget(el, op, va_arg(ap, void **)); 344 break; 345 346 case EL_GETFP: { /* int, FILE ** */ 347 int what = va_arg(ap, int); 348 FILE **fpp = va_arg(ap, FILE **); 349 ret = el_wget(el, op, what, fpp); 350 break; 351 } 352 353 default: 354 ret = -1; 355 break; 356 } 357 358 va_end(ap); 359 return ret; 360 } 361 362 363 const LineInfo * 364 el_line(EditLine *el) 365 { 366 const LineInfoW *winfo = el_wline(el); 367 LineInfo *info = &el->el_lgcylinfo; 368 size_t offset; 369 const Char *p; 370 371 info->buffer = ct_encode_string(winfo->buffer, &el->el_lgcyconv); 372 373 offset = 0; 374 for (p = winfo->buffer; p < winfo->cursor; p++) 375 offset += ct_enc_width(*p); 376 info->cursor = info->buffer + offset; 377 378 offset = 0; 379 for (p = winfo->buffer; p < winfo->lastchar; p++) 380 offset += ct_enc_width(*p); 381 info->lastchar = info->buffer + offset; 382 383 return info; 384 } 385 386 387 int 388 el_insertstr(EditLine *el, const char *str) 389 { 390 return el_winsertstr(el, ct_decode_string(str, &el->el_lgcyconv)); 391 } 392