1 /* $NetBSD: eln.c,v 1.16 2014/05/20 15:05:08 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 1.16 2014/05/20 15:05:08 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_PROMPT_ESC: 129 case EL_RPROMPT_ESC: { 130 el_pfunc_t p = va_arg(ap, el_pfunc_t); 131 int c = va_arg(ap, int); 132 133 ret = prompt_set(el, p, c, op, 0); 134 break; 135 } 136 137 case EL_TERMINAL: /* const char * */ 138 ret = el_wset(el, op, va_arg(ap, char *)); 139 break; 140 141 case EL_EDITOR: /* const wchar_t * */ 142 ret = el_wset(el, op, ct_decode_string(va_arg(ap, char *), 143 &el->el_lgcyconv)); 144 break; 145 146 case EL_SIGNAL: /* int */ 147 case EL_EDITMODE: 148 case EL_UNBUFFERED: 149 case EL_PREP_TERM: 150 ret = el_wset(el, op, va_arg(ap, int)); 151 break; 152 153 case EL_BIND: /* const char * list -> const wchar_t * list */ 154 case EL_TELLTC: 155 case EL_SETTC: 156 case EL_ECHOTC: 157 case EL_SETTY: { 158 const char *argv[20]; 159 int i; 160 const wchar_t **wargv; 161 for (i = 1; i < (int)__arraycount(argv) - 1; ++i) 162 if ((argv[i] = va_arg(ap, const char *)) == NULL) 163 break; 164 argv[0] = argv[i] = NULL; 165 wargv = (const wchar_t **) 166 ct_decode_argv(i + 1, argv, &el->el_lgcyconv); 167 if (!wargv) { 168 ret = -1; 169 goto out; 170 } 171 /* 172 * AFAIK we can't portably pass through our new wargv to 173 * el_wset(), so we have to reimplement the body of 174 * el_wset() for these ops. 175 */ 176 switch (op) { 177 case EL_BIND: 178 wargv[0] = STR("bind"); 179 ret = map_bind(el, i, wargv); 180 break; 181 case EL_TELLTC: 182 wargv[0] = STR("telltc"); 183 ret = terminal_telltc(el, i, wargv); 184 break; 185 case EL_SETTC: 186 wargv[0] = STR("settc"); 187 ret = terminal_settc(el, i, wargv); 188 break; 189 case EL_ECHOTC: 190 wargv[0] = STR("echotc"); 191 ret = terminal_echotc(el, i, wargv); 192 break; 193 case EL_SETTY: 194 wargv[0] = STR("setty"); 195 ret = tty_stty(el, i, wargv); 196 break; 197 default: 198 ret = -1; 199 } 200 ct_free_argv(wargv); 201 break; 202 } 203 204 /* XXX: do we need to change el_func_t too? */ 205 case EL_ADDFN: { /* const char *, const char *, el_func_t */ 206 const char *args[2]; 207 el_func_t func; 208 wchar_t **wargv; 209 210 args[0] = va_arg(ap, const char *); 211 args[1] = va_arg(ap, const char *); 212 func = va_arg(ap, el_func_t); 213 214 wargv = ct_decode_argv(2, args, &el->el_lgcyconv); 215 if (!wargv) { 216 ret = -1; 217 goto out; 218 } 219 // XXX: The two strdup's leak 220 ret = map_addfunc(el, Strdup(wargv[0]), Strdup(wargv[1]), 221 func); 222 ct_free_argv(wargv); 223 break; 224 } 225 case EL_HIST: { /* hist_fun_t, const char * */ 226 hist_fun_t fun = va_arg(ap, hist_fun_t); 227 void *ptr = va_arg(ap, void *); 228 ret = hist_set(el, fun, ptr); 229 el->el_flags |= NARROW_HISTORY; 230 break; 231 } 232 233 /* XXX: do we need to change el_rfunc_t? */ 234 case EL_GETCFN: /* el_rfunc_t */ 235 ret = el_wset(el, op, va_arg(ap, el_rfunc_t)); 236 el->el_flags |= NARROW_READ; 237 break; 238 239 case EL_CLIENTDATA: /* void * */ 240 ret = el_wset(el, op, va_arg(ap, void *)); 241 break; 242 243 case EL_SETFP: { /* int, FILE * */ 244 int what = va_arg(ap, int); 245 FILE *fp = va_arg(ap, FILE *); 246 ret = el_wset(el, op, what, fp); 247 break; 248 } 249 250 case EL_REFRESH: 251 re_clear_display(el); 252 re_refresh(el); 253 terminal__flush(el); 254 ret = 0; 255 break; 256 257 default: 258 ret = -1; 259 break; 260 } 261 262 out: 263 va_end(ap); 264 return ret; 265 } 266 267 268 public int 269 el_get(EditLine *el, int op, ...) 270 { 271 va_list ap; 272 int ret; 273 274 if (!el) 275 return -1; 276 277 va_start(ap, op); 278 279 switch (op) { 280 case EL_PROMPT: /* el_pfunc_t * */ 281 case EL_RPROMPT: { 282 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 283 ret = prompt_get(el, p, 0, op); 284 break; 285 } 286 287 case EL_PROMPT_ESC: /* el_pfunc_t *, char **/ 288 case EL_RPROMPT_ESC: { 289 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 290 char *c = va_arg(ap, char *); 291 wchar_t wc = 0; 292 ret = prompt_get(el, p, &wc, op); 293 *c = (char)wc; 294 break; 295 } 296 297 case EL_EDITOR: { 298 const char **p = va_arg(ap, const char **); 299 const wchar_t *pw; 300 ret = el_wget(el, op, &pw); 301 *p = ct_encode_string(pw, &el->el_lgcyconv); 302 if (!el->el_lgcyconv.csize) 303 ret = -1; 304 break; 305 } 306 307 case EL_TERMINAL: /* const char ** */ 308 ret = el_wget(el, op, va_arg(ap, const char **)); 309 break; 310 311 case EL_SIGNAL: /* int * */ 312 case EL_EDITMODE: 313 case EL_UNBUFFERED: 314 case EL_PREP_TERM: 315 ret = el_wget(el, op, va_arg(ap, int *)); 316 break; 317 318 case EL_GETTC: { 319 char *argv[20]; 320 static char gettc[] = "gettc"; 321 int i; 322 for (i = 1; i < (int)__arraycount(argv); ++i) 323 if ((argv[i] = va_arg(ap, char *)) == NULL) 324 break; 325 argv[0] = gettc; 326 ret = terminal_gettc(el, i, argv); 327 break; 328 } 329 330 /* XXX: do we need to change el_rfunc_t? */ 331 case EL_GETCFN: /* el_rfunc_t */ 332 ret = el_wget(el, op, va_arg(ap, el_rfunc_t *)); 333 break; 334 335 case EL_CLIENTDATA: /* void ** */ 336 ret = el_wget(el, op, va_arg(ap, void **)); 337 break; 338 339 case EL_GETFP: { /* int, FILE ** */ 340 int what = va_arg(ap, int); 341 FILE **fpp = va_arg(ap, FILE **); 342 ret = el_wget(el, op, what, fpp); 343 break; 344 } 345 346 default: 347 ret = -1; 348 break; 349 } 350 351 va_end(ap); 352 return ret; 353 } 354 355 356 const LineInfo * 357 el_line(EditLine *el) 358 { 359 const LineInfoW *winfo = el_wline(el); 360 LineInfo *info = &el->el_lgcylinfo; 361 size_t offset; 362 const Char *p; 363 364 info->buffer = ct_encode_string(winfo->buffer, &el->el_lgcyconv); 365 366 offset = 0; 367 for (p = winfo->buffer; p < winfo->cursor; p++) 368 offset += ct_enc_width(*p); 369 info->cursor = info->buffer + offset; 370 371 offset = 0; 372 for (p = winfo->buffer; p < winfo->lastchar; p++) 373 offset += ct_enc_width(*p); 374 info->lastchar = info->buffer + offset; 375 376 return info; 377 } 378 379 380 int 381 el_insertstr(EditLine *el, const char *str) 382 { 383 return el_winsertstr(el, ct_decode_string(str, &el->el_lgcyconv)); 384 } 385