eln.c
1 /* $NetBSD: eln.c,v 1.9 2010/11/04 13:53:12 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 1.9 2010/11/04 13:53:12 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_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_TERMINAL: /* const char * */ 129 ret = el_wset(el, op, va_arg(ap, char *)); 130 break; 131 132 case EL_EDITOR: /* const wchar_t * */ 133 ret = el_wset(el, op, ct_decode_string(va_arg(ap, char *), 134 &el->el_lgcyconv)); 135 break; 136 137 case EL_SIGNAL: /* int */ 138 case EL_EDITMODE: 139 case EL_UNBUFFERED: 140 case EL_PREP_TERM: 141 ret = el_wset(el, op, va_arg(ap, int)); 142 break; 143 144 case EL_BIND: /* const char * list -> const wchar_t * list */ 145 case EL_TELLTC: 146 case EL_SETTC: 147 case EL_ECHOTC: 148 case EL_SETTY: { 149 const char *argv[20]; 150 int i; 151 const wchar_t **wargv; 152 for (i = 1; i < (int)__arraycount(argv); ++i) 153 if ((argv[i] = va_arg(ap, char *)) == NULL) 154 break; 155 argv[0] = NULL; 156 wargv = (const wchar_t **) 157 ct_decode_argv(i, argv, &el->el_lgcyconv); 158 if (!wargv) { 159 ret = -1; 160 goto out; 161 } 162 /* 163 * AFAIK we can't portably pass through our new wargv to 164 * el_wset(), so we have to reimplement the body of 165 * el_wset() for these ops. 166 */ 167 switch (op) { 168 case EL_BIND: 169 wargv[0] = STR("bind"); 170 ret = map_bind(el, i, wargv); 171 break; 172 case EL_TELLTC: 173 wargv[0] = STR("telltc"); 174 ret = term_telltc(el, i, wargv); 175 break; 176 case EL_SETTC: 177 wargv[0] = STR("settc"); 178 ret = term_settc(el, i, wargv); 179 break; 180 case EL_ECHOTC: 181 wargv[0] = STR("echotc"); 182 ret = term_echotc(el, i, wargv); 183 break; 184 case EL_SETTY: 185 wargv[0] = STR("setty"); 186 ret = tty_stty(el, i, wargv); 187 break; 188 default: 189 ret = -1; 190 } 191 ct_free_argv(wargv); 192 break; 193 } 194 195 /* XXX: do we need to change el_func_t too? */ 196 case EL_ADDFN: { /* const char *, const char *, el_func_t */ 197 const char *args[2]; 198 el_func_t func; 199 wchar_t **wargv; 200 201 args[0] = va_arg(ap, const char *); 202 args[1] = va_arg(ap, const char *); 203 func = va_arg(ap, el_func_t); 204 205 wargv = ct_decode_argv(2, args, &el->el_lgcyconv); 206 if (!wargv) { 207 ret = -1; 208 goto out; 209 } 210 // XXX: The two strdup's leak 211 ret = map_addfunc(el, Strdup(wargv[0]), Strdup(wargv[1]), 212 func); 213 ct_free_argv(wargv); 214 break; 215 } 216 case EL_HIST: { /* hist_fun_t, const char * */ 217 hist_fun_t fun = va_arg(ap, hist_fun_t); 218 ptr_t ptr = va_arg(ap, ptr_t); 219 ret = hist_set(el, fun, ptr); 220 el->el_flags |= NARROW_HISTORY; 221 break; 222 } 223 /* XXX: do we need to change el_rfunc_t? */ 224 case EL_GETCFN: /* el_rfunc_t */ 225 ret = el_wset(el, op, va_arg(ap, el_rfunc_t)); 226 el->el_flags |= NARROW_READ; 227 break; 228 case EL_CLIENTDATA: /* void * */ 229 ret = el_wset(el, op, va_arg(ap, void *)); 230 break; 231 case EL_SETFP: { /* int, FILE * */ 232 int what = va_arg(ap, int); 233 FILE *fp = va_arg(ap, FILE *); 234 ret = el_wset(el, op, what, fp); 235 break; 236 } 237 case EL_PROMPT_ESC: /* el_pfunc_t, char */ 238 case EL_RPROMPT_ESC: { 239 el_pfunc_t p = va_arg(ap, el_pfunc_t); 240 char c = va_arg(ap, int); 241 ret = prompt_set(el, p, c, op, 0); 242 break; 243 } 244 default: 245 ret = -1; 246 break; 247 } 248 249 out: 250 va_end(ap); 251 return ret; 252 } 253 254 255 public int 256 el_get(EditLine *el, int op, ...) 257 { 258 va_list ap; 259 int ret; 260 261 if (!el) 262 return -1; 263 264 va_start(ap, op); 265 266 switch (op) { 267 case EL_PROMPT: /* el_pfunc_t * */ 268 case EL_RPROMPT: { 269 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 270 ret = prompt_get(el, p, 0, op); 271 break; 272 } 273 274 case EL_PROMPT_ESC: /* el_pfunc_t *, char **/ 275 case EL_RPROMPT_ESC: { 276 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 277 char *c = va_arg(ap, char *); 278 wchar_t wc; 279 ret = prompt_get(el, p, &wc, op); 280 *c = (unsigned char)wc; 281 break; 282 } 283 284 case EL_EDITOR: { 285 const char **p = va_arg(ap, const char **); 286 const wchar_t *pw; 287 ret = el_wget(el, op, &pw); 288 *p = ct_encode_string(pw, &el->el_lgcyconv); 289 if (!el->el_lgcyconv.csize) 290 ret = -1; 291 break; 292 } 293 294 case EL_TERMINAL: /* const char ** */ 295 ret = el_wget(el, op, va_arg(ap, const char **)); 296 break; 297 298 case EL_SIGNAL: /* int * */ 299 case EL_EDITMODE: 300 case EL_UNBUFFERED: 301 case EL_PREP_TERM: 302 ret = el_wget(el, op, va_arg(ap, int *)); 303 break; 304 305 case EL_GETTC: { 306 char *argv[20]; 307 static char gettc[] = "gettc"; 308 int i; 309 for (i = 1; i < (int)__arraycount(argv); ++i) 310 if ((argv[i] = va_arg(ap, char *)) == NULL) 311 break; 312 argv[0] = gettc; 313 ret = term_gettc(el, i, argv); 314 break; 315 } 316 317 /* XXX: do we need to change el_rfunc_t? */ 318 case EL_GETCFN: /* el_rfunc_t */ 319 ret = el_wget(el, op, va_arg(ap, el_rfunc_t *)); 320 break; 321 322 case EL_CLIENTDATA: /* void ** */ 323 ret = el_wget(el, op, va_arg(ap, void **)); 324 break; 325 326 case EL_GETFP: { /* int, FILE ** */ 327 int what = va_arg(ap, int); 328 FILE **fpp = va_arg(ap, FILE **); 329 ret = el_wget(el, op, what, fpp); 330 break; 331 } 332 333 default: 334 ret = -1; 335 break; 336 } 337 338 va_end(ap); 339 return ret; 340 } 341 342 343 const LineInfo * 344 el_line(EditLine *el) 345 { 346 const LineInfoW *winfo = el_wline(el); 347 LineInfo *info = &el->el_lgcylinfo; 348 size_t offset; 349 const Char *p; 350 351 info->buffer = ct_encode_string(winfo->buffer, &el->el_lgcyconv); 352 353 offset = 0; 354 for (p = winfo->buffer; p < winfo->cursor; p++) 355 offset += ct_enc_width(*p); 356 info->cursor = info->buffer + offset; 357 358 offset = 0; 359 for (p = winfo->buffer; p < winfo->lastchar; p++) 360 offset += ct_enc_width(*p); 361 info->lastchar = info->buffer + offset; 362 363 return info; 364 } 365 366 367 int 368 el_insertstr(EditLine *el, const char *str) 369 { 370 return el_winsertstr(el, ct_decode_string(str, &el->el_lgcyconv)); 371 }