1 /* $NetBSD: eln.c,v 1.7 2010/04/15 00:52:48 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 1.7 2010/04/15 00:52:48 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 = (unsigned 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_TERMINAL: /* const char * */ 122 ret = el_wset(el, op, va_arg(ap, char *)); 123 break; 124 125 case EL_EDITOR: /* const wchar_t * */ 126 ret = el_wset(el, op, ct_decode_string(va_arg(ap, char *), 127 &el->el_lgcyconv)); 128 break; 129 130 case EL_SIGNAL: /* int */ 131 case EL_EDITMODE: 132 case EL_UNBUFFERED: 133 case EL_PREP_TERM: 134 ret = el_wset(el, op, va_arg(ap, int)); 135 break; 136 137 case EL_BIND: /* const char * list -> const wchar_t * list */ 138 case EL_TELLTC: 139 case EL_SETTC: 140 case EL_ECHOTC: 141 case EL_SETTY: { 142 const char *argv[20]; 143 int i; 144 const wchar_t **wargv; 145 for (i = 1; i < (int)__arraycount(argv); ++i) 146 if ((argv[i] = va_arg(ap, char *)) == NULL) 147 break; 148 argv[0] = NULL; 149 wargv = (const wchar_t **) 150 ct_decode_argv(i, argv, &el->el_lgcyconv); 151 if (!wargv) { 152 ret = -1; 153 goto out; 154 } 155 /* 156 * AFAIK we can't portably pass through our new wargv to 157 * el_wset(), so we have to reimplement the body of 158 * el_wset() for these ops. 159 */ 160 switch (op) { 161 case EL_BIND: 162 wargv[0] = STR("bind"); 163 ret = map_bind(el, i, wargv); 164 break; 165 case EL_TELLTC: 166 wargv[0] = STR("telltc"); 167 ret = term_telltc(el, i, wargv); 168 break; 169 case EL_SETTC: 170 wargv[0] = STR("settc"); 171 ret = term_settc(el, i, wargv); 172 break; 173 case EL_ECHOTC: 174 wargv[0] = STR("echotc"); 175 ret = term_echotc(el, i, wargv); 176 break; 177 case EL_SETTY: 178 wargv[0] = STR("setty"); 179 ret = tty_stty(el, i, wargv); 180 break; 181 default: 182 ret = -1; 183 } 184 ct_free_argv(wargv); 185 break; 186 } 187 188 /* XXX: do we need to change el_func_t too? */ 189 case EL_ADDFN: { /* const char *, const char *, el_func_t */ 190 const char *args[2]; 191 el_func_t func; 192 wchar_t **wargv; 193 194 args[0] = va_arg(ap, const char *); 195 args[1] = va_arg(ap, const char *); 196 func = va_arg(ap, el_func_t); 197 198 wargv = ct_decode_argv(2, args, &el->el_lgcyconv); 199 if (!wargv) { 200 ret = -1; 201 goto out; 202 } 203 // XXX: The two strdup's leak 204 ret = map_addfunc(el, Strdup(wargv[0]), Strdup(wargv[1]), 205 func); 206 ct_free_argv(wargv); 207 break; 208 } 209 case EL_HIST: { /* hist_fun_t, const char * */ 210 hist_fun_t fun = va_arg(ap, hist_fun_t); 211 ptr_t ptr = va_arg(ap, ptr_t); 212 ret = hist_set(el, fun, ptr); 213 if (!(el->el_flags & CHARSET_IS_UTF8)) 214 el->el_flags |= NARROW_HISTORY; 215 break; 216 } 217 /* XXX: do we need to change el_rfunc_t? */ 218 case EL_GETCFN: /* el_rfunc_t */ 219 ret = el_wset(el, op, va_arg(ap, el_rfunc_t)); 220 el->el_flags |= NARROW_READ; 221 break; 222 case EL_CLIENTDATA: /* void * */ 223 ret = el_wset(el, op, va_arg(ap, void *)); 224 break; 225 case EL_SETFP: { /* int, FILE * */ 226 int what = va_arg(ap, int); 227 FILE *fp = va_arg(ap, FILE *); 228 ret = el_wset(el, op, what, fp); 229 break; 230 } 231 case EL_PROMPT_ESC: /* el_pfunc_t, char */ 232 case EL_RPROMPT_ESC: { 233 el_pfunc_t p = va_arg(ap, el_pfunc_t); 234 char c = va_arg(ap, int); 235 ret = prompt_set(el, p, c, op, 0); 236 break; 237 } 238 default: 239 ret = -1; 240 break; 241 } 242 243 out: 244 va_end(ap); 245 return ret; 246 } 247 248 249 public int 250 el_get(EditLine *el, int op, ...) 251 { 252 va_list ap; 253 int ret; 254 255 if (!el) 256 return -1; 257 258 va_start(ap, op); 259 260 switch (op) { 261 case EL_PROMPT: /* el_pfunc_t * */ 262 case EL_RPROMPT: { 263 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 264 ret = prompt_get(el, p, 0, op); 265 break; 266 } 267 268 case EL_PROMPT_ESC: /* el_pfunc_t *, char **/ 269 case EL_RPROMPT_ESC: { 270 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 271 char *c = va_arg(ap, char *); 272 wchar_t wc; 273 ret = prompt_get(el, p, &wc, op); 274 *c = (unsigned char)wc; 275 break; 276 } 277 278 case EL_EDITOR: { 279 const char **p = va_arg(ap, const char **); 280 const wchar_t *pw; 281 ret = el_wget(el, op, &pw); 282 *p = ct_encode_string(pw, &el->el_lgcyconv); 283 if (!el->el_lgcyconv.csize) 284 ret = -1; 285 break; 286 } 287 288 case EL_TERMINAL: /* const char ** */ 289 ret = el_wget(el, op, va_arg(ap, const char **)); 290 break; 291 292 case EL_SIGNAL: /* int * */ 293 case EL_EDITMODE: 294 case EL_UNBUFFERED: 295 case EL_PREP_TERM: 296 ret = el_wget(el, op, va_arg(ap, int *)); 297 break; 298 299 case EL_GETTC: { 300 char *argv[20]; 301 static char gettc[] = "gettc"; 302 int i; 303 for (i = 1; i < (int)__arraycount(argv); ++i) 304 if ((argv[i] = va_arg(ap, char *)) == NULL) 305 break; 306 argv[0] = gettc; 307 ret = term_gettc(el, i, argv); 308 break; 309 } 310 311 /* XXX: do we need to change el_rfunc_t? */ 312 case EL_GETCFN: /* el_rfunc_t */ 313 ret = el_wget(el, op, va_arg(ap, el_rfunc_t *)); 314 break; 315 316 case EL_CLIENTDATA: /* void ** */ 317 ret = el_wget(el, op, va_arg(ap, void **)); 318 break; 319 320 case EL_GETFP: { /* int, FILE ** */ 321 int what = va_arg(ap, int); 322 FILE **fpp = va_arg(ap, FILE **); 323 ret = el_wget(el, op, what, fpp); 324 break; 325 } 326 327 default: 328 ret = -1; 329 break; 330 } 331 332 va_end(ap); 333 return ret; 334 } 335 336 337 const LineInfo * 338 el_line(EditLine *el) 339 { 340 const LineInfoW *winfo = el_wline(el); 341 LineInfo *info = &el->el_lgcylinfo; 342 size_t offset; 343 const Char *p; 344 345 info->buffer = ct_encode_string(winfo->buffer, &el->el_lgcyconv); 346 347 offset = 0; 348 for (p = winfo->buffer; p < winfo->cursor; p++) 349 offset += ct_enc_width(*p); 350 info->cursor = info->buffer + offset; 351 352 offset = 0; 353 for (p = winfo->buffer; p < winfo->lastchar; p++) 354 offset += ct_enc_width(*p); 355 info->lastchar = info->buffer + offset; 356 357 return info; 358 } 359 360 361 int 362 el_insertstr(EditLine *el, const char *str) 363 { 364 return el_winsertstr(el, ct_decode_string(str, &el->el_lgcyconv)); 365 } 366