[7d4fbcd] | 1 | #include "owl.h" |
---|
| 2 | #include <stdlib.h> |
---|
| 3 | #include <unistd.h> |
---|
| 4 | #include <string.h> |
---|
[10b866d] | 5 | #include <ctype.h> |
---|
[7d4fbcd] | 6 | |
---|
[1aee7d9] | 7 | static const char fileIdent[] = "$Id$"; |
---|
| 8 | |
---|
[7d4fbcd] | 9 | #define INCR 5000 |
---|
| 10 | |
---|
[cf83b7a] | 11 | /* initialize the editwin e. |
---|
| 12 | * 'win' is an already initialzed curses window that will be used by editwin |
---|
| 13 | */ |
---|
[c9334b1] | 14 | void owl_editwin_init(owl_editwin *e, WINDOW *win, int winlines, int wincols, int style, owl_history *hist) |
---|
| 15 | { |
---|
[10b866d] | 16 | e->buff=owl_malloc(INCR); |
---|
[7d4fbcd] | 17 | e->buff[0]='\0'; |
---|
| 18 | e->bufflen=0; |
---|
[10b866d] | 19 | e->hist=hist; |
---|
[7d4fbcd] | 20 | e->allocated=INCR; |
---|
| 21 | e->buffx=0; |
---|
| 22 | e->buffy=0; |
---|
| 23 | e->topline=0; |
---|
| 24 | e->winlines=winlines; |
---|
| 25 | e->wincols=wincols; |
---|
[cf83b7a] | 26 | e->fillcol=owl_editwin_limit_maxcols(wincols-1, owl_global_get_edit_maxfillcols(&g)); |
---|
| 27 | e->wrapcol=owl_editwin_limit_maxcols(wincols-1, owl_global_get_edit_maxwrapcols(&g)); |
---|
[7d4fbcd] | 28 | e->curswin=win; |
---|
| 29 | e->style=style; |
---|
| 30 | if ((style!=OWL_EDITWIN_STYLE_MULTILINE) && |
---|
| 31 | (style!=OWL_EDITWIN_STYLE_ONELINE)) { |
---|
| 32 | e->style=OWL_EDITWIN_STYLE_MULTILINE; |
---|
| 33 | } |
---|
| 34 | e->lock=0; |
---|
| 35 | e->dotsend=0; |
---|
[c9334b1] | 36 | e->echochar='\0'; |
---|
[7d4fbcd] | 37 | if (win) werase(win); |
---|
| 38 | } |
---|
| 39 | |
---|
[c9334b1] | 40 | void owl_editwin_set_curswin(owl_editwin *e, WINDOW *w, int winlines, int wincols) |
---|
| 41 | { |
---|
[7d4fbcd] | 42 | e->curswin=w; |
---|
| 43 | e->winlines=winlines; |
---|
| 44 | e->wincols=wincols; |
---|
[cf83b7a] | 45 | e->fillcol=owl_editwin_limit_maxcols(wincols-1, owl_global_get_edit_maxfillcols(&g)); |
---|
| 46 | e->wrapcol=owl_editwin_limit_maxcols(wincols-1, owl_global_get_edit_maxwrapcols(&g)); |
---|
[7d4fbcd] | 47 | } |
---|
| 48 | |
---|
[c9334b1] | 49 | /* echo the character 'ch' for each normal character keystroke, |
---|
| 50 | * excepting locktext. This is useful for entering passwords etc. If |
---|
| 51 | * ch=='\0' characters are echo'd normally |
---|
| 52 | */ |
---|
| 53 | void owl_editwin_set_echochar(owl_editwin *e, int ch) |
---|
| 54 | { |
---|
| 55 | e->echochar=ch; |
---|
| 56 | } |
---|
| 57 | |
---|
| 58 | WINDOW *owl_editwin_get_curswin(owl_editwin *e) |
---|
| 59 | { |
---|
[060b3b4] | 60 | return(e->curswin); |
---|
[7d4fbcd] | 61 | } |
---|
| 62 | |
---|
[c9334b1] | 63 | void owl_editwin_set_history(owl_editwin *e, owl_history *h) |
---|
| 64 | { |
---|
[060b3b4] | 65 | e->hist=h; |
---|
[10b866d] | 66 | } |
---|
| 67 | |
---|
[c9334b1] | 68 | owl_history *owl_editwin_get_history(owl_editwin *e) |
---|
| 69 | { |
---|
[060b3b4] | 70 | return(e->hist); |
---|
[10b866d] | 71 | } |
---|
| 72 | |
---|
[c9334b1] | 73 | void owl_editwin_set_dotsend(owl_editwin *e) |
---|
| 74 | { |
---|
[7d4fbcd] | 75 | e->dotsend=1; |
---|
| 76 | } |
---|
| 77 | |
---|
[c9334b1] | 78 | int owl_editwin_limit_maxcols(int v, int maxv) |
---|
| 79 | { |
---|
[d36f2cb] | 80 | if (maxv > 5 && v > maxv) { |
---|
[060b3b4] | 81 | return(maxv); |
---|
[d36f2cb] | 82 | } else { |
---|
[060b3b4] | 83 | return(v); |
---|
[d36f2cb] | 84 | } |
---|
| 85 | } |
---|
| 86 | |
---|
[c9334b1] | 87 | /* set text to be 'locked in' at the beginning of the buffer, any |
---|
| 88 | * previous text (including locked text) will be overwritten |
---|
| 89 | */ |
---|
| 90 | void owl_editwin_set_locktext(owl_editwin *e, char *text) |
---|
| 91 | { |
---|
[7d4fbcd] | 92 | |
---|
| 93 | int x, y; |
---|
| 94 | |
---|
| 95 | x=e->buffx; |
---|
| 96 | y=e->buffy; |
---|
| 97 | e->buffx=0; |
---|
| 98 | e->buffy=0; |
---|
| 99 | owl_editwin_overwrite_string(e, text); |
---|
| 100 | e->lock=strlen(text); |
---|
| 101 | /* if (text[e->lock-1]=='\n') e->lock--; */ |
---|
| 102 | e->buffx=x; |
---|
| 103 | e->buffy=y; |
---|
| 104 | owl_editwin_adjust_for_locktext(e); |
---|
| 105 | owl_editwin_redisplay(e, 0); |
---|
| 106 | } |
---|
| 107 | |
---|
[c9334b1] | 108 | int owl_editwin_get_style(owl_editwin *e) |
---|
| 109 | { |
---|
[7d4fbcd] | 110 | return(e->style); |
---|
| 111 | } |
---|
| 112 | |
---|
[c9334b1] | 113 | void owl_editwin_new_style(owl_editwin *e, int newstyle, owl_history *h) |
---|
| 114 | { |
---|
[7d4fbcd] | 115 | char *ptr; |
---|
[10b866d] | 116 | |
---|
| 117 | owl_editwin_set_history(e, h); |
---|
[7d4fbcd] | 118 | if (e->style==newstyle) return; |
---|
| 119 | |
---|
| 120 | if (newstyle==OWL_EDITWIN_STYLE_MULTILINE) { |
---|
| 121 | e->style=newstyle; |
---|
| 122 | } else if (newstyle==OWL_EDITWIN_STYLE_ONELINE) { |
---|
| 123 | e->style=newstyle; |
---|
| 124 | |
---|
| 125 | /* nuke everything after the first line */ |
---|
| 126 | if (e->bufflen > 0) { |
---|
| 127 | ptr=strchr(e->buff, '\n')-1; |
---|
| 128 | if (ptr) { |
---|
| 129 | e->bufflen=ptr - e->buff; |
---|
| 130 | e->buff[e->bufflen]='\0'; |
---|
| 131 | e->buffx=0; |
---|
| 132 | e->buffy=0; |
---|
| 133 | } |
---|
| 134 | } |
---|
| 135 | } |
---|
| 136 | } |
---|
| 137 | |
---|
[c9334b1] | 138 | /* completly reinitialize the buffer */ |
---|
| 139 | void owl_editwin_fullclear(owl_editwin *e) |
---|
| 140 | { |
---|
[7d4fbcd] | 141 | owl_free(e->buff); |
---|
[10b866d] | 142 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
---|
[7d4fbcd] | 143 | } |
---|
| 144 | |
---|
[c9334b1] | 145 | /* clear all text except for locktext and put the cursor at the |
---|
| 146 | * beginning |
---|
| 147 | */ |
---|
| 148 | void owl_editwin_clear(owl_editwin *e) |
---|
| 149 | { |
---|
| 150 | |
---|
[7d4fbcd] | 151 | int lock; |
---|
[10b866d] | 152 | int dotsend=e->dotsend; |
---|
[7d4fbcd] | 153 | char *locktext=NULL; |
---|
[10b866d] | 154 | |
---|
[7d4fbcd] | 155 | lock=0; |
---|
| 156 | if (e->lock > 0) { |
---|
| 157 | lock=1; |
---|
| 158 | |
---|
| 159 | locktext=owl_malloc(e->lock+20); |
---|
| 160 | strncpy(locktext, e->buff, e->lock); |
---|
| 161 | locktext[e->lock]='\0'; |
---|
| 162 | } |
---|
| 163 | |
---|
| 164 | owl_free(e->buff); |
---|
[10b866d] | 165 | owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist); |
---|
[7d4fbcd] | 166 | |
---|
| 167 | if (lock > 0) { |
---|
| 168 | owl_editwin_set_locktext(e, locktext); |
---|
| 169 | } |
---|
[10b866d] | 170 | if (dotsend) { |
---|
| 171 | owl_editwin_set_dotsend(e); |
---|
| 172 | } |
---|
[7d4fbcd] | 173 | |
---|
| 174 | if (locktext) owl_free(locktext); |
---|
| 175 | owl_editwin_adjust_for_locktext(e); |
---|
| 176 | } |
---|
| 177 | |
---|
| 178 | |
---|
[c9334b1] | 179 | /* malloc more space for the buffer */ |
---|
| 180 | void _owl_editwin_addspace(owl_editwin *e) |
---|
| 181 | { |
---|
[7d4fbcd] | 182 | e->buff=owl_realloc(e->buff, e->allocated+INCR); |
---|
| 183 | if (!e->buff) { |
---|
| 184 | /* error */ |
---|
| 185 | return; |
---|
| 186 | } |
---|
| 187 | e->allocated+=INCR; |
---|
| 188 | } |
---|
| 189 | |
---|
[c9334b1] | 190 | void owl_editwin_recenter(owl_editwin *e) |
---|
| 191 | { |
---|
[7d4fbcd] | 192 | e->topline=e->buffy-(e->winlines/2); |
---|
| 193 | if (e->topline<0) e->topline=0; |
---|
| 194 | if (e->topline>owl_editwin_get_numlines(e)) e->topline=owl_editwin_get_numlines(e); |
---|
| 195 | } |
---|
| 196 | |
---|
[c9334b1] | 197 | /* regenerate the text on the curses window */ |
---|
| 198 | /* if update == 1 then do a doupdate(), otherwise do not */ |
---|
| 199 | void owl_editwin_redisplay(owl_editwin *e, int update) |
---|
| 200 | { |
---|
[7d4fbcd] | 201 | |
---|
| 202 | char *ptr1, *ptr2, *ptr3, *buff; |
---|
[cf83b7a] | 203 | int i; |
---|
[7d4fbcd] | 204 | |
---|
| 205 | werase(e->curswin); |
---|
| 206 | wmove(e->curswin, 0, 0); |
---|
| 207 | |
---|
| 208 | /* start at topline */ |
---|
| 209 | ptr1=e->buff; |
---|
| 210 | for (i=0; i<e->topline; i++) { |
---|
| 211 | ptr2=strchr(ptr1, '\n'); |
---|
| 212 | if (!ptr2) { |
---|
| 213 | /* we're already on the last line */ |
---|
| 214 | break; |
---|
| 215 | } |
---|
| 216 | ptr1=ptr2+1; |
---|
| 217 | } |
---|
| 218 | /* ptr1 now stores the starting point */ |
---|
| 219 | |
---|
| 220 | /* find the ending point and store it in ptr3 */ |
---|
| 221 | ptr2=ptr1; |
---|
| 222 | ptr3=ptr1; |
---|
| 223 | for (i=0; i<e->winlines; i++) { |
---|
| 224 | ptr3=strchr(ptr2, '\n'); |
---|
| 225 | if (!ptr3) { |
---|
| 226 | /* we've hit the last line */ |
---|
| 227 | /* print everything to the end */ |
---|
| 228 | ptr3=e->buff+e->bufflen-1; |
---|
| 229 | ptr3--; |
---|
| 230 | break; |
---|
| 231 | } |
---|
| 232 | ptr2=ptr3+1; |
---|
| 233 | } |
---|
| 234 | ptr3+=2; |
---|
| 235 | |
---|
| 236 | buff=owl_malloc(ptr3-ptr1+50); |
---|
| 237 | strncpy(buff, ptr1, ptr3-ptr1); |
---|
| 238 | buff[ptr3-ptr1]='\0'; |
---|
[c9334b1] | 239 | if (e->echochar=='\0') { |
---|
| 240 | waddstr(e->curswin, buff); |
---|
| 241 | } else { |
---|
| 242 | /* translate to echochar, *except* for the locktext */ |
---|
| 243 | int len; |
---|
| 244 | int dolocklen=e->lock-(ptr1-e->buff); |
---|
| 245 | |
---|
| 246 | for (i=0; i<dolocklen; i++) { |
---|
| 247 | waddch(e->curswin, buff[i]); |
---|
| 248 | } |
---|
| 249 | len=strlen(buff); |
---|
| 250 | for (i=0; i<len-dolocklen; i++) { |
---|
| 251 | waddch(e->curswin, e->echochar); |
---|
| 252 | } |
---|
| 253 | } |
---|
[7d4fbcd] | 254 | wmove(e->curswin, e->buffy-e->topline, e->buffx); |
---|
| 255 | wnoutrefresh(e->curswin); |
---|
| 256 | if (update==1) { |
---|
| 257 | doupdate(); |
---|
| 258 | } |
---|
| 259 | owl_free(buff); |
---|
| 260 | } |
---|
| 261 | |
---|
| 262 | |
---|
[c9334b1] | 263 | /* linewrap the word just before the cursor. |
---|
| 264 | * returns 0 on success |
---|
| 265 | * returns -1 if we could not wrap. |
---|
| 266 | */ |
---|
| 267 | int _owl_editwin_linewrap_word(owl_editwin *e) |
---|
| 268 | { |
---|
[7d4fbcd] | 269 | int i, z; |
---|
| 270 | |
---|
| 271 | z=_owl_editwin_get_index_from_xy(e); |
---|
| 272 | /* move back and line wrap the previous word */ |
---|
| 273 | for (i=z-1; ; i--) { |
---|
| 274 | /* move back until you find a space or hit the beginning of the line */ |
---|
| 275 | if (e->buff[i]==' ') { |
---|
| 276 | /* replace the space with a newline */ |
---|
| 277 | e->buff[i]='\n'; |
---|
| 278 | e->buffy++; |
---|
| 279 | e->buffx=z-i-1; |
---|
| 280 | /* were we on the last line */ |
---|
| 281 | return(0); |
---|
| 282 | } else if (e->buff[i]=='\n' || i<=e->lock) { |
---|
| 283 | /* we hit the begginning of the line or the buffer, we cannot |
---|
| 284 | * wrap. |
---|
| 285 | */ |
---|
| 286 | return(-1); |
---|
| 287 | } |
---|
| 288 | } |
---|
| 289 | } |
---|
| 290 | |
---|
[c9334b1] | 291 | /* insert a character at the current point (shift later |
---|
| 292 | * characters over) |
---|
| 293 | */ |
---|
| 294 | void owl_editwin_insert_char(owl_editwin *e, char c) |
---|
| 295 | { |
---|
[7d4fbcd] | 296 | |
---|
| 297 | int z, i, ret; |
---|
| 298 | |
---|
| 299 | /* \r is \n */ |
---|
| 300 | if (c=='\r') { |
---|
| 301 | c='\n'; |
---|
| 302 | } |
---|
| 303 | |
---|
| 304 | if (c=='\n' && e->style==OWL_EDITWIN_STYLE_ONELINE) { |
---|
| 305 | /* perhaps later this will change some state that allows the string |
---|
| 306 | to be read */ |
---|
| 307 | return; |
---|
| 308 | } |
---|
| 309 | |
---|
| 310 | /* make sure there is enough memory for the new text */ |
---|
| 311 | if ((e->bufflen+1) > (e->allocated-5)) { |
---|
| 312 | _owl_editwin_addspace(e); |
---|
| 313 | } |
---|
| 314 | |
---|
| 315 | /* get the insertion point */ |
---|
| 316 | z=_owl_editwin_get_index_from_xy(e); |
---|
| 317 | |
---|
| 318 | /* If we're going to insert at the last column do word wrapping, unless it's a \n */ |
---|
| 319 | if ((e->buffx+1==e->wrapcol) && (c!='\n')) { |
---|
| 320 | ret=_owl_editwin_linewrap_word(e); |
---|
| 321 | if (ret==-1) { |
---|
| 322 | /* we couldn't wrap, insert a hard newline instead */ |
---|
| 323 | owl_editwin_insert_char(e, '\n'); |
---|
| 324 | } |
---|
| 325 | } |
---|
| 326 | |
---|
| 327 | z=_owl_editwin_get_index_from_xy(e); |
---|
| 328 | /* shift all the other characters right */ |
---|
| 329 | for (i=e->bufflen; i>z; i--) { |
---|
| 330 | e->buff[i]=e->buff[i-1]; |
---|
| 331 | } |
---|
| 332 | |
---|
| 333 | /* insert the new one */ |
---|
| 334 | e->buff[z]=c; |
---|
| 335 | |
---|
| 336 | /* housekeeping */ |
---|
| 337 | e->bufflen++; |
---|
| 338 | e->buff[e->bufflen]='\0'; |
---|
| 339 | |
---|
| 340 | /* advance the cursor */ |
---|
| 341 | if (c=='\n') { |
---|
| 342 | e->buffx=0; |
---|
| 343 | e->buffy++; |
---|
| 344 | } else { |
---|
| 345 | e->buffx++; |
---|
| 346 | } |
---|
| 347 | } |
---|
| 348 | |
---|
[c9334b1] | 349 | /* overwrite the character at the current point with 'c' */ |
---|
| 350 | void owl_editwin_overwrite_char(owl_editwin *e, char c) |
---|
| 351 | { |
---|
[7d4fbcd] | 352 | int z; |
---|
| 353 | |
---|
| 354 | /* \r is \n */ |
---|
| 355 | if (c=='\r') { |
---|
| 356 | c='\n'; |
---|
| 357 | } |
---|
| 358 | |
---|
| 359 | if (c=='\n' && e->style==OWL_EDITWIN_STYLE_ONELINE) { |
---|
| 360 | /* perhaps later this will change some state that allows the string |
---|
| 361 | to be read */ |
---|
| 362 | return; |
---|
| 363 | } |
---|
| 364 | |
---|
| 365 | z=_owl_editwin_get_index_from_xy(e); |
---|
| 366 | |
---|
| 367 | /* only if we are at the end of the buffer do we create new space */ |
---|
| 368 | if (z==e->bufflen) { |
---|
| 369 | if ((e->bufflen+1) > (e->allocated-5)) { |
---|
| 370 | _owl_editwin_addspace(e); |
---|
| 371 | } |
---|
| 372 | } |
---|
| 373 | |
---|
| 374 | e->buff[z]=c; |
---|
| 375 | |
---|
| 376 | /* housekeeping if we are at the end of the buffer */ |
---|
| 377 | if (z==e->bufflen) { |
---|
| 378 | e->bufflen++; |
---|
| 379 | e->buff[e->bufflen]='\0'; |
---|
| 380 | } |
---|
| 381 | |
---|
| 382 | /* advance the cursor */ |
---|
| 383 | if (c=='\n') { |
---|
| 384 | e->buffx=0; |
---|
| 385 | e->buffy++; |
---|
| 386 | } else { |
---|
| 387 | e->buffx++; |
---|
| 388 | } |
---|
| 389 | |
---|
| 390 | } |
---|
| 391 | |
---|
[c9334b1] | 392 | /* delete the character at the current point, following chars |
---|
| 393 | * shift left. |
---|
| 394 | */ |
---|
| 395 | void owl_editwin_delete_char(owl_editwin *e) |
---|
| 396 | { |
---|
[7d4fbcd] | 397 | int z, i; |
---|
| 398 | |
---|
| 399 | if (e->bufflen==0) return; |
---|
| 400 | |
---|
| 401 | /* get the deletion point */ |
---|
| 402 | z=_owl_editwin_get_index_from_xy(e); |
---|
| 403 | |
---|
| 404 | if (z==e->bufflen) return; |
---|
| 405 | |
---|
| 406 | for (i=z; i<e->bufflen; i++) { |
---|
| 407 | e->buff[i]=e->buff[i+1]; |
---|
| 408 | } |
---|
| 409 | e->bufflen--; |
---|
| 410 | e->buff[e->bufflen]='\0'; |
---|
| 411 | } |
---|
| 412 | |
---|
[c9334b1] | 413 | /* Swap the character at point with the character at point-1 and |
---|
| 414 | * advance the pointer. If point is at beginning of buffer do |
---|
| 415 | * nothing. If point is after the last character swap point-1 with |
---|
| 416 | * point-2. (Behaves as observed in tcsh and emacs). |
---|
| 417 | */ |
---|
| 418 | void owl_editwin_transpose_chars(owl_editwin *e) |
---|
| 419 | { |
---|
[f2e36b5] | 420 | int z; |
---|
| 421 | char tmp; |
---|
| 422 | |
---|
| 423 | if (e->bufflen==0) return; |
---|
| 424 | |
---|
| 425 | /* get the cursor point */ |
---|
| 426 | z=_owl_editwin_get_index_from_xy(e); |
---|
| 427 | |
---|
| 428 | if (z==e->bufflen) { |
---|
| 429 | /* point is after last character */ |
---|
| 430 | z--; |
---|
| 431 | } |
---|
| 432 | |
---|
| 433 | if (z-1 < e->lock) { |
---|
| 434 | /* point is at beginning of buffer, do nothing */ |
---|
| 435 | return; |
---|
| 436 | } |
---|
| 437 | |
---|
| 438 | tmp=e->buff[z]; |
---|
| 439 | e->buff[z]=e->buff[z-1]; |
---|
| 440 | e->buff[z-1]=tmp; |
---|
| 441 | owl_editwin_key_right(e); |
---|
| 442 | } |
---|
| 443 | |
---|
[c9334b1] | 444 | /* insert 'string' at the current point, later text is shifted |
---|
| 445 | * right |
---|
| 446 | */ |
---|
| 447 | void owl_editwin_insert_string(owl_editwin *e, char *string) |
---|
| 448 | { |
---|
[7d4fbcd] | 449 | int i, j; |
---|
| 450 | |
---|
| 451 | j=strlen(string); |
---|
| 452 | for (i=0; i<j; i++) { |
---|
| 453 | owl_editwin_insert_char(e, string[i]); |
---|
| 454 | } |
---|
| 455 | } |
---|
| 456 | |
---|
[c9334b1] | 457 | /* write 'string' at the current point, overwriting text that is |
---|
| 458 | * already there |
---|
| 459 | */ |
---|
| 460 | |
---|
| 461 | void owl_editwin_overwrite_string(owl_editwin *e, char *string) |
---|
| 462 | { |
---|
[7d4fbcd] | 463 | int i, j; |
---|
| 464 | |
---|
| 465 | j=strlen(string); |
---|
| 466 | for (i=0; i<j; i++) { |
---|
| 467 | owl_editwin_overwrite_char(e, string[i]); |
---|
| 468 | } |
---|
| 469 | } |
---|
| 470 | |
---|
[c9334b1] | 471 | /* get the index into e->buff for the current cursor |
---|
| 472 | * position. |
---|
| 473 | */ |
---|
| 474 | int _owl_editwin_get_index_from_xy(owl_editwin *e) |
---|
| 475 | { |
---|
[7d4fbcd] | 476 | int i; |
---|
| 477 | char *ptr1, *ptr2; |
---|
| 478 | |
---|
| 479 | if (e->bufflen==0) return(0); |
---|
| 480 | |
---|
| 481 | /* first go to the yth line */ |
---|
| 482 | ptr1=e->buff; |
---|
| 483 | for (i=0; i<e->buffy; i++) { |
---|
| 484 | ptr2=strchr(ptr1, '\n'); |
---|
| 485 | if (!ptr2) { |
---|
| 486 | /* we're already on the last line */ |
---|
| 487 | break; |
---|
| 488 | } |
---|
| 489 | ptr1=ptr2+1; |
---|
| 490 | } |
---|
| 491 | |
---|
| 492 | /* now go to the xth character */ |
---|
| 493 | ptr2=strchr(ptr1, '\n'); |
---|
| 494 | if (!ptr2) { |
---|
| 495 | ptr2=e->buff+e->bufflen; |
---|
| 496 | } |
---|
| 497 | |
---|
| 498 | if ((ptr2-ptr1) < e->buffx) { |
---|
| 499 | ptr1=ptr2-1; |
---|
| 500 | } else { |
---|
| 501 | ptr1+=e->buffx; |
---|
| 502 | } |
---|
| 503 | |
---|
| 504 | /* printf("DEBUG: index is %i\r\n", ptr1-e->buff); */ |
---|
| 505 | return(ptr1-e->buff); |
---|
| 506 | } |
---|
| 507 | |
---|
[c9334b1] | 508 | void _owl_editwin_set_xy_by_index(owl_editwin *e, int index) |
---|
| 509 | { |
---|
[7d4fbcd] | 510 | int z, i; |
---|
| 511 | |
---|
| 512 | z=_owl_editwin_get_index_from_xy(e); |
---|
| 513 | if (index>z) { |
---|
| 514 | for (i=0; i<index-z; i++) { |
---|
| 515 | owl_editwin_key_right(e); |
---|
| 516 | } |
---|
| 517 | } else if (index<z) { |
---|
| 518 | for (i=0; i<z-index; i++) { |
---|
| 519 | owl_editwin_key_left(e); |
---|
| 520 | } |
---|
| 521 | } |
---|
| 522 | } |
---|
| 523 | |
---|
[c9334b1] | 524 | void owl_editwin_adjust_for_locktext(owl_editwin *e) |
---|
| 525 | { |
---|
[7d4fbcd] | 526 | /* if we happen to have the cursor over locked text |
---|
| 527 | * move it to be out of the locktext region */ |
---|
| 528 | if (_owl_editwin_get_index_from_xy(e)<e->lock) { |
---|
| 529 | _owl_editwin_set_xy_by_index(e, e->lock); |
---|
| 530 | } |
---|
| 531 | } |
---|
| 532 | |
---|
[c9334b1] | 533 | void owl_editwin_backspace(owl_editwin *e) |
---|
| 534 | { |
---|
[7d4fbcd] | 535 | /* delete the char before the current one |
---|
| 536 | * and shift later chars left |
---|
| 537 | */ |
---|
| 538 | if (_owl_editwin_get_index_from_xy(e) > e->lock) { |
---|
| 539 | owl_editwin_key_left(e); |
---|
| 540 | owl_editwin_delete_char(e); |
---|
| 541 | } |
---|
| 542 | owl_editwin_adjust_for_locktext(e); |
---|
| 543 | } |
---|
| 544 | |
---|
[c9334b1] | 545 | void owl_editwin_key_up(owl_editwin *e) |
---|
| 546 | { |
---|
[7d4fbcd] | 547 | if (e->buffy > 0) e->buffy--; |
---|
| 548 | if (e->buffx >= owl_editwin_get_numchars_on_line(e, e->buffy)) { |
---|
| 549 | e->buffx=owl_editwin_get_numchars_on_line(e, e->buffy); |
---|
| 550 | } |
---|
| 551 | |
---|
| 552 | /* do we need to scroll? */ |
---|
| 553 | if (e->buffy-e->topline < 0) { |
---|
| 554 | e->topline-=e->winlines/2; |
---|
| 555 | } |
---|
| 556 | |
---|
| 557 | owl_editwin_adjust_for_locktext(e); |
---|
| 558 | } |
---|
| 559 | |
---|
[c9334b1] | 560 | void owl_editwin_key_down(owl_editwin *e) |
---|
| 561 | { |
---|
[7d4fbcd] | 562 | /* move down if we can */ |
---|
| 563 | if (e->buffy+1 < owl_editwin_get_numlines(e)) e->buffy++; |
---|
| 564 | |
---|
| 565 | /* if we're past the last character move back */ |
---|
| 566 | if (e->buffx >= owl_editwin_get_numchars_on_line(e, e->buffy)) { |
---|
| 567 | e->buffx=owl_editwin_get_numchars_on_line(e, e->buffy); |
---|
| 568 | } |
---|
| 569 | |
---|
| 570 | /* do we need to scroll? */ |
---|
| 571 | if (e->buffy-e->topline > e->winlines) { |
---|
| 572 | e->topline+=e->winlines/2; |
---|
| 573 | } |
---|
| 574 | |
---|
| 575 | /* adjust for locktext */ |
---|
| 576 | owl_editwin_adjust_for_locktext(e); |
---|
| 577 | } |
---|
| 578 | |
---|
[c9334b1] | 579 | void owl_editwin_key_left(owl_editwin *e) |
---|
| 580 | { |
---|
[7d4fbcd] | 581 | /* move left if we can, and maybe up a line */ |
---|
| 582 | if (e->buffx>0) { |
---|
| 583 | e->buffx--; |
---|
| 584 | } else if (e->buffy>0) { |
---|
| 585 | e->buffy--; |
---|
| 586 | e->buffx=owl_editwin_get_numchars_on_line(e, e->buffy); |
---|
| 587 | } |
---|
| 588 | |
---|
| 589 | /* do we need to scroll up? */ |
---|
| 590 | if (e->buffy-e->topline < 0) { |
---|
| 591 | e->topline-=e->winlines/2; |
---|
| 592 | } |
---|
| 593 | |
---|
| 594 | /* make sure to avoid locktext */ |
---|
| 595 | owl_editwin_adjust_for_locktext(e); |
---|
| 596 | } |
---|
| 597 | |
---|
[c9334b1] | 598 | void owl_editwin_key_right(owl_editwin *e) |
---|
| 599 | { |
---|
[7d4fbcd] | 600 | int i; |
---|
| 601 | |
---|
| 602 | /* move right if we can, and skip down a line if needed */ |
---|
| 603 | i=owl_editwin_get_numchars_on_line(e, e->buffy); |
---|
| 604 | if (e->buffx < i) { |
---|
| 605 | e->buffx++; |
---|
| 606 | /* } else if (e->buffy+1 < owl_editwin_get_numlines(e)) { */ |
---|
| 607 | } else if (_owl_editwin_get_index_from_xy(e) < e->bufflen) { |
---|
| 608 | if (e->style==OWL_EDITWIN_STYLE_MULTILINE) { |
---|
| 609 | e->buffx=0; |
---|
| 610 | e->buffy++; |
---|
| 611 | } |
---|
| 612 | } |
---|
| 613 | |
---|
| 614 | /* do we need to scroll down? */ |
---|
| 615 | if (e->buffy-e->topline >= e->winlines) { |
---|
| 616 | e->topline+=e->winlines/2; |
---|
| 617 | } |
---|
| 618 | } |
---|
| 619 | |
---|
[c9334b1] | 620 | void owl_editwin_move_to_nextword(owl_editwin *e) |
---|
| 621 | { |
---|
[7d4fbcd] | 622 | int i, x; |
---|
| 623 | |
---|
| 624 | /* if we're starting on a space, find the first non-space */ |
---|
| 625 | i=_owl_editwin_get_index_from_xy(e); |
---|
| 626 | if (e->buff[i]==' ') { |
---|
| 627 | for (x=i; x<e->bufflen; x++) { |
---|
| 628 | if (e->buff[x]!=' ' && e->buff[x]!='\n') { |
---|
| 629 | _owl_editwin_set_xy_by_index(e, x); |
---|
| 630 | break; |
---|
| 631 | } |
---|
| 632 | } |
---|
| 633 | } |
---|
| 634 | |
---|
| 635 | /* find the next space, newline or end of line and go there, if |
---|
| 636 | already at the end of the line, continue on to the next */ |
---|
| 637 | i=owl_editwin_get_numchars_on_line(e, e->buffy); |
---|
| 638 | if (e->buffx < i) { |
---|
| 639 | /* move right till end of line */ |
---|
| 640 | while (e->buffx < i) { |
---|
| 641 | e->buffx++; |
---|
| 642 | if (e->buff[_owl_editwin_get_index_from_xy(e)]==' ') return; |
---|
| 643 | if (e->buffx == i) return; |
---|
| 644 | } |
---|
| 645 | } else if (e->buffx == i) { |
---|
| 646 | /* try to move down */ |
---|
| 647 | if (e->style==OWL_EDITWIN_STYLE_MULTILINE) { |
---|
| 648 | if (e->buffy+1 < owl_editwin_get_numlines(e)) { |
---|
| 649 | e->buffx=0; |
---|
| 650 | e->buffy++; |
---|
| 651 | owl_editwin_move_to_nextword(e); |
---|
| 652 | } |
---|
| 653 | } |
---|
| 654 | } |
---|
| 655 | } |
---|
| 656 | |
---|
[c9334b1] | 657 | /* go backwards to the last non-space character |
---|
| 658 | */ |
---|
| 659 | void owl_editwin_move_to_previousword(owl_editwin *e) |
---|
| 660 | { |
---|
[7d4fbcd] | 661 | int i, x; |
---|
| 662 | |
---|
| 663 | /* are we already at the beginning of the word? */ |
---|
| 664 | i=_owl_editwin_get_index_from_xy(e); |
---|
| 665 | if ( (e->buff[i]!=' ' && e->buff[i]!='\n' && e->buff[i]!='\0') && |
---|
| 666 | (e->buff[i-1]==' ' || e->buff[i-1]=='\n') ) { |
---|
| 667 | owl_editwin_key_left(e); |
---|
| 668 | } |
---|
| 669 | |
---|
| 670 | /* are we starting on a space character? */ |
---|
| 671 | i=_owl_editwin_get_index_from_xy(e); |
---|
| 672 | if (e->buff[i]==' ' || e->buff[i]=='\n' || e->buff[i]=='\0') { |
---|
| 673 | /* find the first non-space */ |
---|
| 674 | for (x=i; x>=e->lock; x--) { |
---|
| 675 | if (e->buff[x]!=' ' && e->buff[x]!='\n' && e->buff[x]!='\0') { |
---|
| 676 | _owl_editwin_set_xy_by_index(e, x); |
---|
| 677 | break; |
---|
| 678 | } |
---|
| 679 | } |
---|
| 680 | } |
---|
| 681 | |
---|
| 682 | /* find the last non-space */ |
---|
| 683 | i=_owl_editwin_get_index_from_xy(e); |
---|
| 684 | for (x=i; x>=e->lock; x--) { |
---|
| 685 | if (e->buff[x-1]==' ' || e->buff[x-1]=='\n') { |
---|
| 686 | _owl_editwin_set_xy_by_index(e, x); |
---|
| 687 | break; |
---|
| 688 | } |
---|
| 689 | } |
---|
| 690 | _owl_editwin_set_xy_by_index(e, x); |
---|
| 691 | } |
---|
| 692 | |
---|
| 693 | |
---|
[c9334b1] | 694 | void owl_editwin_delete_nextword(owl_editwin *e) |
---|
| 695 | { |
---|
[7d4fbcd] | 696 | int z; |
---|
| 697 | |
---|
| 698 | if (e->bufflen==0) return; |
---|
| 699 | |
---|
| 700 | /* if we start out on a space character then gobble all the spaces |
---|
| 701 | up first */ |
---|
| 702 | while (1) { |
---|
| 703 | z=_owl_editwin_get_index_from_xy(e); |
---|
| 704 | if (e->buff[z]==' ' || e->buff[z]=='\n') { |
---|
| 705 | owl_editwin_delete_char(e); |
---|
| 706 | } else { |
---|
| 707 | break; |
---|
| 708 | } |
---|
| 709 | } |
---|
| 710 | |
---|
| 711 | /* then nuke the next word */ |
---|
| 712 | while (1) { |
---|
| 713 | z=_owl_editwin_get_index_from_xy(e); |
---|
| 714 | if (e->buff[z+1]==' ' || e->buff[z+1]=='\n' || e->buff[z+1]=='\0') break; |
---|
| 715 | owl_editwin_delete_char(e); |
---|
| 716 | } |
---|
| 717 | owl_editwin_delete_char(e); |
---|
| 718 | } |
---|
| 719 | |
---|
[c9334b1] | 720 | void owl_editwin_delete_previousword(owl_editwin *e) |
---|
| 721 | { |
---|
[b68f9cd] | 722 | /* go backwards to the last non-space character, then delete chars */ |
---|
| 723 | int i, startpos, endpos; |
---|
| 724 | |
---|
| 725 | startpos = _owl_editwin_get_index_from_xy(e); |
---|
| 726 | owl_editwin_move_to_previousword(e); |
---|
| 727 | endpos = _owl_editwin_get_index_from_xy(e); |
---|
| 728 | for (i=0; i<startpos-endpos; i++) { |
---|
| 729 | owl_editwin_delete_char(e); |
---|
| 730 | } |
---|
| 731 | } |
---|
| 732 | |
---|
[c9334b1] | 733 | void owl_editwin_delete_to_endofline(owl_editwin *e) |
---|
| 734 | { |
---|
[7d4fbcd] | 735 | int i; |
---|
| 736 | |
---|
| 737 | if (owl_editwin_get_numchars_on_line(e, e->buffy)>e->buffx) { |
---|
| 738 | /* normal line */ |
---|
| 739 | i=_owl_editwin_get_index_from_xy(e); |
---|
| 740 | while(i < e->bufflen) { |
---|
| 741 | if (e->buff[i]!='\n') { |
---|
| 742 | owl_editwin_delete_char(e); |
---|
| 743 | } else if ((e->buff[i]=='\n') && (i==e->bufflen-1)) { |
---|
| 744 | owl_editwin_delete_char(e); |
---|
| 745 | } else { |
---|
| 746 | return; |
---|
| 747 | } |
---|
| 748 | } |
---|
| 749 | } else if (e->buffy+1 < owl_editwin_get_numlines(e)) { |
---|
| 750 | /* line with cursor at the end but not on very last line */ |
---|
| 751 | owl_editwin_key_right(e); |
---|
| 752 | owl_editwin_backspace(e); |
---|
| 753 | } |
---|
| 754 | } |
---|
| 755 | |
---|
[c9334b1] | 756 | void owl_editwin_move_to_line_end(owl_editwin *e) |
---|
| 757 | { |
---|
[7d4fbcd] | 758 | e->buffx=owl_editwin_get_numchars_on_line(e, e->buffy); |
---|
| 759 | } |
---|
| 760 | |
---|
[c9334b1] | 761 | void owl_editwin_move_to_line_start(owl_editwin *e) |
---|
| 762 | { |
---|
[7d4fbcd] | 763 | e->buffx=0; |
---|
| 764 | owl_editwin_adjust_for_locktext(e); |
---|
| 765 | } |
---|
| 766 | |
---|
[c9334b1] | 767 | void owl_editwin_move_to_end(owl_editwin *e) |
---|
| 768 | { |
---|
[7d4fbcd] | 769 | /* go to last char */ |
---|
| 770 | e->buffy=owl_editwin_get_numlines(e)-1; |
---|
| 771 | e->buffx=owl_editwin_get_numchars_on_line(e, e->buffy); |
---|
| 772 | owl_editwin_key_right(e); |
---|
| 773 | |
---|
| 774 | /* do we need to scroll? */ |
---|
| 775 | if (e->buffy-e->topline > e->winlines) { |
---|
| 776 | e->topline+=e->winlines/2; |
---|
| 777 | } |
---|
| 778 | } |
---|
| 779 | |
---|
[c9334b1] | 780 | void owl_editwin_move_to_top(owl_editwin *e) |
---|
| 781 | { |
---|
[7d4fbcd] | 782 | _owl_editwin_set_xy_by_index(e, 0); |
---|
| 783 | |
---|
| 784 | /* do we need to scroll? */ |
---|
| 785 | e->topline=0; |
---|
| 786 | |
---|
| 787 | owl_editwin_adjust_for_locktext(e); |
---|
| 788 | } |
---|
| 789 | |
---|
[c9334b1] | 790 | void owl_editwin_fill_paragraph(owl_editwin *e) |
---|
| 791 | { |
---|
[7d4fbcd] | 792 | int i, save; |
---|
| 793 | |
---|
| 794 | /* save our starting point */ |
---|
| 795 | save=_owl_editwin_get_index_from_xy(e); |
---|
| 796 | |
---|
| 797 | /* scan back to the beginning of this paragraph */ |
---|
| 798 | for (i=save; i>=e->lock; i--) { |
---|
| 799 | if ( (i<=e->lock) || |
---|
| 800 | ((e->buff[i]=='\n') && (e->buff[i-1]=='\n'))) { |
---|
| 801 | _owl_editwin_set_xy_by_index(e, i+1); |
---|
| 802 | break; |
---|
| 803 | } |
---|
| 804 | } |
---|
| 805 | |
---|
| 806 | /* main loop */ |
---|
| 807 | while (1) { |
---|
| 808 | i=_owl_editwin_get_index_from_xy(e); |
---|
| 809 | |
---|
| 810 | /* bail if we hit the end of the buffer */ |
---|
| 811 | if (i>=e->bufflen) break; |
---|
| 812 | |
---|
| 813 | /* bail if we hit the end of the paragraph */ |
---|
| 814 | if (e->buff[i]=='\n' && e->buff[i+1]=='\n') break; |
---|
| 815 | |
---|
| 816 | /* if we've travelled too far, linewrap */ |
---|
| 817 | if ((e->buffx) >= e->fillcol) { |
---|
| 818 | _owl_editwin_linewrap_word(e); |
---|
| 819 | } |
---|
| 820 | |
---|
| 821 | /* did we hit the end of a line too soon? */ |
---|
| 822 | i=_owl_editwin_get_index_from_xy(e); |
---|
| 823 | if (e->buff[i]=='\n' && e->buffx<e->fillcol-1) { |
---|
| 824 | /* ********* we need to make sure we don't pull in a word that's too long ***********/ |
---|
| 825 | e->buff[i]=' '; |
---|
| 826 | } |
---|
| 827 | |
---|
| 828 | /* fix spacing */ |
---|
| 829 | i=_owl_editwin_get_index_from_xy(e); |
---|
| 830 | if (e->buff[i]==' ' && e->buff[i+1]==' ') { |
---|
| 831 | if (e->buff[i-1]=='.' || e->buff[i-1]=='!' || e->buff[i-1]=='?') { |
---|
| 832 | owl_editwin_key_right(e); |
---|
| 833 | } else { |
---|
| 834 | owl_editwin_delete_char(e); |
---|
| 835 | /* if we did this ahead of the save point, adjust it */ |
---|
| 836 | if (i<save) save--; |
---|
| 837 | } |
---|
| 838 | } else { |
---|
| 839 | owl_editwin_key_right(e); |
---|
| 840 | } |
---|
| 841 | |
---|
| 842 | } |
---|
| 843 | |
---|
| 844 | /* put cursor back at starting point */ |
---|
| 845 | _owl_editwin_set_xy_by_index(e, save); |
---|
| 846 | |
---|
| 847 | /* do we need to scroll? */ |
---|
| 848 | if (e->buffy-e->topline < 0) { |
---|
| 849 | e->topline-=e->winlines/2; |
---|
| 850 | } |
---|
| 851 | } |
---|
| 852 | |
---|
[cf83b7a] | 853 | /* returns true if only whitespace remains */ |
---|
[c9334b1] | 854 | int owl_editwin_is_at_end(owl_editwin *e) |
---|
| 855 | { |
---|
[10b866d] | 856 | int cur=_owl_editwin_get_index_from_xy(e); |
---|
[c9334b1] | 857 | return (only_whitespace(e->buff+cur)); |
---|
[217a43e] | 858 | } |
---|
| 859 | |
---|
[c9334b1] | 860 | int owl_editwin_check_dotsend(owl_editwin *e) |
---|
| 861 | { |
---|
[7d4fbcd] | 862 | int i; |
---|
| 863 | |
---|
| 864 | if (!e->dotsend) return(0); |
---|
| 865 | for (i=e->bufflen-1; i>0; i--) { |
---|
| 866 | if (e->buff[i] == '.' |
---|
| 867 | && (e->buff[i-1] == '\n' || e->buff[i-1] == '\r') |
---|
| 868 | && (e->buff[i+1] == '\n' || e->buff[i+1] == '\r')) { |
---|
| 869 | e->bufflen = i; |
---|
| 870 | e->buff[i] = '\0'; |
---|
| 871 | return(1); |
---|
| 872 | } |
---|
[601a9e0] | 873 | if (!isspace((int) e->buff[i])) { |
---|
[7d4fbcd] | 874 | return(0); |
---|
| 875 | } |
---|
| 876 | } |
---|
| 877 | return(0); |
---|
| 878 | } |
---|
| 879 | |
---|
[c9334b1] | 880 | void owl_editwin_post_process_char(owl_editwin *e, int j) |
---|
| 881 | { |
---|
[7d4fbcd] | 882 | /* check if we need to scroll down */ |
---|
| 883 | if (e->buffy-e->topline >= e->winlines) { |
---|
| 884 | e->topline+=e->winlines/2; |
---|
| 885 | } |
---|
| 886 | if ((j==13 || j==10) && owl_editwin_check_dotsend(e)) { |
---|
| 887 | owl_command_editmulti_done(e); |
---|
| 888 | return; |
---|
| 889 | } |
---|
| 890 | owl_editwin_redisplay(e, 0); |
---|
| 891 | } |
---|
| 892 | |
---|
[c9334b1] | 893 | void owl_editwin_process_char(owl_editwin *e, int j) |
---|
| 894 | { |
---|
[7d4fbcd] | 895 | if (j == ERR) return; |
---|
| 896 | if (j>127 || ((j<32) && (j!=10) && (j!=13))) { |
---|
| 897 | return; |
---|
| 898 | } else { |
---|
| 899 | owl_editwin_insert_char(e, j); |
---|
| 900 | } |
---|
| 901 | } |
---|
| 902 | |
---|
[c9334b1] | 903 | char *owl_editwin_get_text(owl_editwin *e) |
---|
| 904 | { |
---|
[7d4fbcd] | 905 | return(e->buff+e->lock); |
---|
| 906 | } |
---|
| 907 | |
---|
[c9334b1] | 908 | int owl_editwin_get_numchars_on_line(owl_editwin *e, int line) |
---|
| 909 | { |
---|
[7d4fbcd] | 910 | int i; |
---|
| 911 | char *ptr1, *ptr2; |
---|
| 912 | |
---|
| 913 | if (e->bufflen==0) return(0); |
---|
| 914 | |
---|
| 915 | /* first go to the yth line */ |
---|
| 916 | ptr1=e->buff; |
---|
| 917 | for (i=0; i<line; i++) { |
---|
| 918 | ptr2=strchr(ptr1, '\n'); |
---|
| 919 | if (!ptr2) { |
---|
| 920 | /* we're already on the last line */ |
---|
| 921 | return(0); |
---|
| 922 | } |
---|
| 923 | ptr1=ptr2+1; |
---|
| 924 | } |
---|
| 925 | |
---|
| 926 | /* now go to the xth character */ |
---|
| 927 | ptr2=strchr(ptr1, '\n'); |
---|
| 928 | if (!ptr2) { |
---|
| 929 | return(e->buff + e->bufflen - ptr1); |
---|
| 930 | } |
---|
| 931 | return(ptr2-ptr1); /* don't count the newline for now */ |
---|
| 932 | } |
---|
| 933 | |
---|
[c9334b1] | 934 | int owl_editwin_get_numlines(owl_editwin *e) |
---|
| 935 | { |
---|
[7d4fbcd] | 936 | return(owl_text_num_lines(e->buff)); |
---|
| 937 | } |
---|
| 938 | |
---|