Subversion Repositories SvarDOS

Rev

Rev 1352 | Rev 1354 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1283 mateusz.vi 1 
/* Sved, the SvarDOS editor
2 
 *
3 
 * Copyright (C) 2023 Mateusz Viste
4 
 *
5 
 * Sved is released under the terms of the MIT license.
6 
 *
7 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 
 * of this software and associated documentation files (the "Software"), to
9 
 * deal in the Software without restriction, including without limitation the
10 
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
11 
 * sell copies of the Software, and to permit persons to whom the Software is
12 
 * furnished to do so, subject to the following conditions:
13 
 *
14 
 * The above copyright notice and this permission notice shall be included in
15 
 * all copies or substantial portions of the Software.
16 
 *
17 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
23 
 * IN THE SOFTWARE.
24 
 */
1275 mateusz.vi 25 
 
1338 mateusz.vi 26 
#include <dos.h>      /* _dos_open(), _dos_read(), _dos_close(), ... */
27 
#include <fcntl.h>    /* O_RDONLY, O_WRONLY */
1275 mateusz.vi 28 
#include <string.h>
29 
 
1312 mateusz.vi 30 
#include "mdr\bios.h"
1275 mateusz.vi 31 
#include "mdr\cout.h"
1307 mateusz.vi 32 
#include "mdr\dos.h"
1275 mateusz.vi 33 
#include "mdr\keyb.h"
34 
 
1282 mateusz.vi 35 
#include "svarlang\svarlang.h"
36 
 
1326 mateusz.vi 37 
 
38 
/*****************************************************************************
39 
 * global variables and definitions                                          *
40 
 *****************************************************************************/
41 
 
1275 mateusz.vi 42 
/* preload the mono scheme (to be overloaded at runtime if color adapter present) */
1333 mateusz.vi 43 
static unsigned char SCHEME_TEXT   = 0x07,
44 
                     SCHEME_STBAR1 = 0x70,
45 
                     SCHEME_STBAR2 = 0x70,
46 
                     SCHEME_STBAR3 = 0xf0,
47 
                     SCHEME_SCROLL = 0x70,
48 
                     SCHEME_MSG    = 0x70,
49 
                     SCHEME_ERR    = 0xf0;
1327 mateusz.vi 50 
 
1326 mateusz.vi 51 
static unsigned char screenw, screenh;
1275 mateusz.vi 52 
 
1327 mateusz.vi 53 
static struct {
54 
    unsigned char from;
55 
    unsigned char to;
1342 mateusz.vi 56 
    unsigned char statusbar;
57 
} uidirty = {0, 0xff, 1}; /* make sure to redraw entire UI at first run */
1327 mateusz.vi 58 
 
1275 mateusz.vi 59 
#define SCROLL_CURSOR 0xB1
60 
 
61 
struct line {
1288 mateusz.vi 62 
  struct line far *prev;
63 
  struct line far *next;
1275 mateusz.vi 64 
  unsigned short len;
65 
  char payload[1];
66 
};
67 
 
1315 mateusz.vi 68 
struct file {
1288 mateusz.vi 69 
  struct line far *cursor;
1275 mateusz.vi 70 
  unsigned short xoffset;
1348 mateusz.vi 71 
  unsigned short cursorposx;
72 
  unsigned short cursorposy;
1328 mateusz.vi 73 
  unsigned short totlines;
74 
  unsigned short curline;
1330 mateusz.vi 75 
  char lfonly;   /* set if line endings are LF (CR/LF otherwise) */
76 
  char modflag;  /* non-zero if file has been modified since last save */
1332 mateusz.vi 77 
  char fname[128];
1275 mateusz.vi 78 
};
79 
 
80 
 
1326 mateusz.vi 81 
/*****************************************************************************
82 
 * functions                                                                 *
83 
 *****************************************************************************/
84 
 
1339 mateusz.vi 85 
static struct line far *line_calloc(unsigned short siz) {
1342 mateusz.vi 86 
  struct line far *res;
1339 mateusz.vi 87 
  unsigned int seg;
1341 mateusz.vi 88 
  if (_dos_allocmem((sizeof(struct line) + siz + 15) / 16, &seg) != 0) return(NULL);
1342 mateusz.vi 89 
  res = MK_FP(seg, 0);
90 
  _fmemset(res, 0, sizeof(struct line) + siz);
1339 mateusz.vi 91 
  return(MK_FP(seg, 0));
92 
}
93 
 
94 
 
95 
static void line_free(struct line far *ptr) {
96 
  _dos_freemem(FP_SEG(ptr));
97 
}
98 
 
99 
 
1348 mateusz.vi 100 
static int curline_resize(struct file far *db, unsigned short newsiz) {
1339 mateusz.vi 101 
  unsigned int maxavail;
102 
  struct line far *newptr;
103 
 
1341 mateusz.vi 104 
  /* try resizing the block (much faster) */
105 
  if (_dos_setblock((sizeof(struct line) + newsiz + 15) / 16, FP_SEG(db->cursor), &maxavail) == 0) return(0);
1339 mateusz.vi 106 
 
107 
  /* create a new block and copy data over */
108 
  newptr = line_calloc(newsiz);
1340 mateusz.vi 109 
  if (newptr == NULL) return(-1);
110 
  _fmemmove(newptr, db->cursor, sizeof(struct line) + db->cursor->len);
111 
 
112 
  /* rewire the linked list */
113 
  db->cursor = newptr;
114 
  if (newptr->next) newptr->next->prev = newptr;
115 
  if (newptr->prev) newptr->prev->next = newptr;
116 
 
117 
  return(0);
1339 mateusz.vi 118 
}
119 
 
120 
 
1328 mateusz.vi 121 
/* adds a new line at cursor position into file linked list and advance cursor
1324 mateusz.vi 122 
 * returns non-zero on error */
1328 mateusz.vi 123 
static int line_add(struct file *db, const char far *line, unsigned short slen) {
1288 mateusz.vi 124 
  struct line far *l;
1275 mateusz.vi 125 
 
1339 mateusz.vi 126 
  l = line_calloc(slen);
1287 mateusz.vi 127 
  if (l == NULL) return(-1);
128 
 
1275 mateusz.vi 129 
  l->prev = db->cursor;
130 
  if (db->cursor) {
131 
    l->next = db->cursor->next;
132 
    db->cursor->next = l;
133 
    l->next->prev = l;
134 
  }
135 
  db->cursor = l;
1342 mateusz.vi 136 
  if (slen > 0) {
137 
    _fmemmove(l->payload, line, slen);
138 
    l->len = slen;
139 
  }
1287 mateusz.vi 140 
 
1328 mateusz.vi 141 
  db->totlines += 1;
142 
  db->curline += 1;
143 
 
1287 mateusz.vi 144 
  return(0);
1275 mateusz.vi 145 
}
146 
 
147 
 
1348 mateusz.vi 148 
static void ui_getstring(const char *query, char *s, unsigned short maxlen) {
149 
  unsigned short len = 0;
150 
  unsigned char y, x;
1332 mateusz.vi 151 
  int k;
152 
 
153 
  if (maxlen == 0) return;
154 
  maxlen--; /* make room for the nul terminator */
155 
 
156 
  y = screenh - 1;
157 
 
158 
  /* print query string */
1333 mateusz.vi 159 
  x = mdr_cout_str(y, 0, query, SCHEME_STBAR3, 40);
160 
  mdr_cout_char_rep(y, x++, ' ', SCHEME_STBAR3, screenw - x);
1332 mateusz.vi 161 
 
162 
  for (;;) {
163 
    mdr_cout_locate(y, x + len);
164 
    k = keyb_getkey();
165 
 
1345 mateusz.vi 166 
    switch (k) {
167 
      case 0x1b: /* ESC */
168 
        s[0] = 0;
169 
        return;
170 
      case '\r':
171 
        s[len] = 0;
172 
        return;
173 
      case 0x08: /* BKSPC */
174 
        if (len > 0) {
175 
          len--;
176 
          mdr_cout_char(y, x + len, ' ', SCHEME_STBAR3);
177 
        }
178 
        break;
179 
      default:
180 
        if ((k <= 0xff) && (k >= ' ') && (len < maxlen)) {
181 
          mdr_cout_char(y, x + len, k, SCHEME_STBAR3);
182 
          s[len++] = k;
183 
        }
1332 mateusz.vi 184 
    }
1345 mateusz.vi 185 
  }
1332 mateusz.vi 186 
 
187 
}
188 
 
189 
 
1324 mateusz.vi 190 
/* append a nul-terminated string to line at cursor position */
191 
static int line_append(struct file *f, const char far *buf, unsigned short len) {
192 
  if (sizeof(struct line) + f->cursor->len + len < len) return(-1); /* overflow check */
1340 mateusz.vi 193 
  if (curline_resize(f, f->cursor->len + len) != 0) return(-1);
1337 mateusz.vi 194 
  _fmemmove(f->cursor->payload + f->cursor->len, buf, len);
1324 mateusz.vi 195 
  f->cursor->len += len;
196 
 
197 
  return(0);
198 
}
199 
 
200 
 
1315 mateusz.vi 201 
static void db_rewind(struct file *db) {
1275 mateusz.vi 202 
  if (db->cursor == NULL) return;
203 
  while (db->cursor->prev) db->cursor = db->cursor->prev;
1328 mateusz.vi 204 
  db->curline = 0;
1275 mateusz.vi 205 
}
206 
 
207 
 
1326 mateusz.vi 208 
static void ui_basic(const struct file *db) {
1302 mateusz.vi 209 
  const char *s = svarlang_strid(0); /* HELP */
1348 mateusz.vi 210 
  unsigned short helpcol = screenw - strlen(s);
1275 mateusz.vi 211 
 
1330 mateusz.vi 212 
  /* fill status bar with background (without modflag as it is refreshed by ui_refresh) */
1333 mateusz.vi 213 
  mdr_cout_char_rep(screenh - 1, 1, ' ', SCHEME_STBAR1, screenw - 1);
1313 mateusz.vi 214 
 
215 
  /* filename */
1330 mateusz.vi 216 
  {
217 
    const char *fn = db->fname;
218 
    if (*fn == 0) fn = svarlang_str(0, 1);
1333 mateusz.vi 219 
    mdr_cout_str(screenh - 1, 1, fn, SCHEME_STBAR1, screenw);
1321 mateusz.vi 220 
  }
1313 mateusz.vi 221 
 
222 
  /* eol type */
1330 mateusz.vi 223 
  {
224 
    const char *eoltype = "CRLF";
1353 mateusz.vi 225 
    if (db->lfonly) eoltype += 2;
1335 mateusz.vi 226 
    mdr_cout_str(screenh - 1, helpcol - 6, eoltype, SCHEME_STBAR1, 5);
1275 mateusz.vi 227 
  }
1313 mateusz.vi 228 
 
1335 mateusz.vi 229 
  mdr_cout_str(screenh - 1, helpcol, s, SCHEME_STBAR2, 40);
1275 mateusz.vi 230 
}
231 
 
232 
 
1331 mateusz.vi 233 
static void ui_msg(const char *msg1, const char *msg2, unsigned char attr) {
1312 mateusz.vi 234 
  unsigned short x, y, msglen, i;
1331 mateusz.vi 235 
  unsigned char msg2flag = 0;
236 
 
237 
  msglen = strlen(msg1);
238 
  if (msg2) {
239 
    msg2flag = 1;
240 
    i = strlen(msg2);
241 
    if (i > msglen) msglen = i;
242 
  }
243 
 
244 
  y = (screenh - 6) >> 1;
1312 mateusz.vi 245 
  x = (screenw - msglen - 4) >> 1;
1331 mateusz.vi 246 
  for (i = y+2+msg2flag; i >= y; i--) mdr_cout_char_rep(i, x, ' ', attr, msglen + 2);
247 
  x++;
1345 mateusz.vi 248 
 
1331 mateusz.vi 249 
  mdr_cout_str(y+1, x, msg1, attr, msglen);
250 
  if (msg2) mdr_cout_str(y+2, x, msg2, attr, msglen);
1312 mateusz.vi 251 
 
1327 mateusz.vi 252 
  if (uidirty.from > y) uidirty.from = y;
1331 mateusz.vi 253 
  if (uidirty.to < y+4) uidirty.to = y+4;
1312 mateusz.vi 254 
}
255 
 
256 
 
1342 mateusz.vi 257 
static unsigned char ui_confirm_if_unsaved(struct file *db) {
258 
  if (db->modflag == 0) return(0);
259 
 
260 
  /* if file has been modified then ask for confirmation */
261 
  ui_msg(svarlang_str(0,4), svarlang_str(0,5), SCHEME_MSG);
262 
  if (keyb_getkey() == '\r') return(0);
263 
 
264 
  return(1);
265 
}
266 
 
267 
 
1348 mateusz.vi 268 
static void ui_help(void) {
1347 mateusz.vi 269 
#define MAXLINLEN 39
270 
  unsigned short i, offset;
271 
  offset = (screenw - MAXLINLEN) >> 1;
1335 mateusz.vi 272 
 
1347 mateusz.vi 273 
  for (i = 3; i < 25; i++) {
1337 mateusz.vi 274 
    const char *s = svarlang_str(8, i);
1335 mateusz.vi 275 
    if (s[0] == 0) break;
1347 mateusz.vi 276 
    mdr_cout_char_rep(i, offset, ' ', SCHEME_STBAR1, MAXLINLEN);
1335 mateusz.vi 277 
    if (s[0] == '.') continue;
1347 mateusz.vi 278 
    mdr_cout_locate(i, offset + 2 + mdr_cout_str(i, offset + 2, s, SCHEME_STBAR1, MAXLINLEN - 2));
1309 mateusz.vi 279 
  }
280 
 
281 
  keyb_getkey();
282 
#undef MAXLINLEN
283 
}
284 
 
285 
 
1327 mateusz.vi 286 
static void ui_refresh(const struct file *db) {
1318 mateusz.vi 287 
  unsigned char x;
1310 mateusz.vi 288 
  const struct line far *l;
1316 mateusz.vi 289 
  unsigned char y = db->cursorposy;
1275 mateusz.vi 290 
 
1288 mateusz.vi 291 
#ifdef DBG_REFRESH
1282 mateusz.vi 292 
  static char m = 'a';
293 
  m++;
294 
  if (m > 'z') m = 'a';
1288 mateusz.vi 295 
#endif
1282 mateusz.vi 296 
 
1310 mateusz.vi 297 
  /* rewind cursor line to first line that needs redrawing */
1327 mateusz.vi 298 
  for (l = db->cursor; y > uidirty.from; y--) l = l->prev;
1282 mateusz.vi 299 
 
1310 mateusz.vi 300 
  /* iterate over lines and redraw whatever needs to be redrawn */
301 
  for (; l != NULL; l = l->next, y++) {
302 
 
303 
    /* skip lines that do not need to be refreshed */
1327 mateusz.vi 304 
    if (y < uidirty.from) continue;
305 
    if (y > uidirty.to) break;
1282 mateusz.vi 306 
 
1318 mateusz.vi 307 
    x = 0;
1275 mateusz.vi 308 
    if (db->xoffset < l->len) {
1318 mateusz.vi 309 
      unsigned char i, limit;
310 
      if (l->len - db->xoffset < screenw) {
311 
        limit = l->len;
312 
      } else {
313 
        limit = db->xoffset + screenw - 1;
314 
      }
1333 mateusz.vi 315 
      for (i = db->xoffset; i < limit; i++) mdr_cout_char(y, x++, l->payload[i], SCHEME_TEXT);
1275 mateusz.vi 316 
    }
1282 mateusz.vi 317 
 
1318 mateusz.vi 318 
    /* write empty spaces until end of line */
1333 mateusz.vi 319 
    if (x < screenw - 1) mdr_cout_char_rep(y, x, ' ', SCHEME_TEXT, screenw - 1 - x);
1318 mateusz.vi 320 
 
1288 mateusz.vi 321 
#ifdef DBG_REFRESH
1333 mateusz.vi 322 
    mdr_cout_char(y, 0, m, SCHEME_STBAR1);
1288 mateusz.vi 323 
#endif
1282 mateusz.vi 324 
 
1275 mateusz.vi 325 
    if (y == screenh - 2) break;
326 
  }
1310 mateusz.vi 327 
 
1319 mateusz.vi 328 
  /* fill all lines below if empty (and they need to be redrawn) */
329 
  if (l == NULL) {
1327 mateusz.vi 330 
    while ((y < screenh - 1) && (y < uidirty.to)) {
1333 mateusz.vi 331 
      mdr_cout_char_rep(y++, 0, ' ', SCHEME_TEXT, screenw - 1);
1319 mateusz.vi 332 
    }
1318 mateusz.vi 333 
  }
1328 mateusz.vi 334 
 
1330 mateusz.vi 335 
  /* "file changed" flag */
1351 mateusz.vi 336 
  mdr_cout_char(screenh - 1, 0, db->modflag, SCHEME_STBAR1);
1330 mateusz.vi 337 
 
1328 mateusz.vi 338 
  /* scroll bar */
339 
  for (y = 0; y < (screenh - 1); y++) {
1333 mateusz.vi 340 
    mdr_cout_char(y, screenw - 1, SCROLL_CURSOR, SCHEME_SCROLL);
1328 mateusz.vi 341 
  }
342 
 
343 
  /* scroll cursor */
344 
  if (db->totlines >= screenh) {
345 
    unsigned short topline = db->curline - db->cursorposy;
346 
    unsigned short col;
347 
    unsigned short totlines = db->totlines - screenh + 1;
348 
    if (db->totlines - screenh > screenh) {
349 
      col = topline / (totlines / (screenh - 1));
350 
    } else {
351 
      col = topline * (screenh - 1) / totlines;
352 
    }
353 
    if (col >= screenh - 1) col = screenh - 2;
1333 mateusz.vi 354 
    mdr_cout_char(col, screenw - 1, ' ', SCHEME_SCROLL);
1328 mateusz.vi 355 
  }
1275 mateusz.vi 356 
}
357 
 
358 
 
1327 mateusz.vi 359 
static void check_cursor_not_after_eol(struct file *db) {
1316 mateusz.vi 360 
  if (db->xoffset + db->cursorposx <= db->cursor->len) return;
1275 mateusz.vi 361 
 
362 
  if (db->cursor->len < db->xoffset) {
1316 mateusz.vi 363 
    db->cursorposx = 0;
1275 mateusz.vi 364 
    db->xoffset = db->cursor->len;
1327 mateusz.vi 365 
    uidirty.from = 0;
366 
    uidirty.to = 0xff;
1275 mateusz.vi 367 
  } else {
1316 mateusz.vi 368 
    db->cursorposx = db->cursor->len - db->xoffset;
1275 mateusz.vi 369 
  }
370 
}
371 
 
372 
 
1327 mateusz.vi 373 
static void cursor_up(struct file *db) {
1275 mateusz.vi 374 
  if (db->cursor->prev != NULL) {
1328 mateusz.vi 375 
    db->curline -= 1;
1275 mateusz.vi 376 
    db->cursor = db->cursor->prev;
1316 mateusz.vi 377 
    if (db->cursorposy == 0) {
1327 mateusz.vi 378 
      uidirty.from = 0;
379 
      uidirty.to = 0xff;
1275 mateusz.vi 380 
    } else {
1316 mateusz.vi 381 
      db->cursorposy -= 1;
1275 mateusz.vi 382 
    }
383 
  }
384 
}
385 
 
386 
 
1327 mateusz.vi 387 
static void cursor_eol(struct file *db) {
1275 mateusz.vi 388 
  /* adjust xoffset to make sure eol is visible on screen */
1282 mateusz.vi 389 
  if (db->xoffset > db->cursor->len) {
390 
    db->xoffset = db->cursor->len - 1;
1327 mateusz.vi 391 
    uidirty.from = 0;
392 
    uidirty.to = 0xff;
1282 mateusz.vi 393 
  }
394 
 
395 
  if (db->xoffset + screenw - 1 <= db->cursor->len) {
396 
    db->xoffset = db->cursor->len - screenw + 2;
1327 mateusz.vi 397 
    uidirty.from = 0;
398 
    uidirty.to = 0xff;
1282 mateusz.vi 399 
  }
1316 mateusz.vi 400 
  db->cursorposx = db->cursor->len - db->xoffset;
1275 mateusz.vi 401 
}
402 
 
403 
 
1327 mateusz.vi 404 
static void cursor_down(struct file *db) {
1276 mateusz.vi 405 
  if (db->cursor->next != NULL) {
1328 mateusz.vi 406 
    db->curline += 1;
1276 mateusz.vi 407 
    db->cursor = db->cursor->next;
1316 mateusz.vi 408 
    if (db->cursorposy < screenh - 2) {
409 
      db->cursorposy += 1;
1276 mateusz.vi 410 
    } else {
1327 mateusz.vi 411 
      uidirty.from = 0;
412 
      uidirty.to = 0xff;
1276 mateusz.vi 413 
    }
414 
  }
415 
}
416 
 
417 
 
1327 mateusz.vi 418 
static void cursor_left(struct file *db) {
1316 mateusz.vi 419 
  if (db->cursorposx > 0) {
420 
    db->cursorposx -= 1;
1302 mateusz.vi 421 
  } else if (db->xoffset > 0) {
422 
    db->xoffset -= 1;
1327 mateusz.vi 423 
    uidirty.from = 0;
424 
    uidirty.to = 0xff;
1302 mateusz.vi 425 
  } else if (db->cursor->prev != NULL) { /* jump to end of line above */
1327 mateusz.vi 426 
    cursor_up(db);
427 
    cursor_eol(db);
1302 mateusz.vi 428 
  }
429 
}
430 
 
431 
 
1327 mateusz.vi 432 
static void cursor_home(struct file *db) {
1316 mateusz.vi 433 
  db->cursorposx = 0;
1282 mateusz.vi 434 
  if (db->xoffset != 0) {
435 
    db->xoffset = 0;
1327 mateusz.vi 436 
    uidirty.from = 0;
437 
    uidirty.to = 0xff;
1282 mateusz.vi 438 
  }
1276 mateusz.vi 439 
}
440 
 
441 
 
1327 mateusz.vi 442 
static void cursor_right(struct file *db) {
1316 mateusz.vi 443 
  if (db->cursor->len > db->xoffset + db->cursorposx) {
444 
    if (db->cursorposx < screenw - 2) {
445 
      db->cursorposx += 1;
1308 mateusz.vi 446 
    } else {
447 
      db->xoffset += 1;
1327 mateusz.vi 448 
      uidirty.from = 0;
449 
      uidirty.to = 0xff;
1308 mateusz.vi 450 
    }
451 
  } else {
1327 mateusz.vi 452 
    cursor_down(db);
453 
    cursor_home(db);
1308 mateusz.vi 454 
  }
455 
}
456 
 
457 
 
1327 mateusz.vi 458 
static void del(struct file *db) {
1316 mateusz.vi 459 
  if (db->cursorposx + db->xoffset < db->cursor->len) {
460 
    _fmemmove(db->cursor->payload + db->cursorposx + db->xoffset, db->cursor->payload + db->cursorposx + db->xoffset + 1, db->cursor->len - db->cursorposx - db->xoffset);
1292 mateusz.vi 461 
    db->cursor->len -= 1; /* do this AFTER memmove so the copy includes the nul terminator */
1327 mateusz.vi 462 
    uidirty.from = db->cursorposy;
463 
    uidirty.to = db->cursorposy;
1351 mateusz.vi 464 
    db->modflag = '*';
1292 mateusz.vi 465 
  } else if (db->cursor->next != NULL) { /* cursor is at end of line: merge current line with next one (if there is a next one) */
466 
    struct line far *nextline = db->cursor->next;
467 
    if (db->cursor->next->len > 0) {
1340 mateusz.vi 468 
      if (curline_resize(db, db->cursor->len + db->cursor->next->len + 1) == 0) {
1337 mateusz.vi 469 
        _fmemmove(db->cursor->payload + db->cursor->len, db->cursor->next->payload, db->cursor->next->len + 1);
1292 mateusz.vi 470 
        db->cursor->len += db->cursor->next->len;
471 
      }
472 
    }
1340 mateusz.vi 473 
 
1292 mateusz.vi 474 
    db->cursor->next = db->cursor->next->next;
475 
    db->cursor->next->prev = db->cursor;
1340 mateusz.vi 476 
 
1339 mateusz.vi 477 
    line_free(nextline);
1327 mateusz.vi 478 
    uidirty.from = db->cursorposy;
479 
    uidirty.to = 0xff;
1328 mateusz.vi 480 
    db->totlines -= 1;
1351 mateusz.vi 481 
    db->modflag = '*';
1292 mateusz.vi 482 
  }
483 
}
484 
 
485 
 
1327 mateusz.vi 486 
static void bkspc(struct file *db) {
1302 mateusz.vi 487 
 
488 
  /* backspace is basically "left + del", not applicable only if cursor is on 1st byte of the file */
1316 mateusz.vi 489 
  if ((db->cursorposx == 0) && (db->xoffset == 0) && (db->cursor->prev == NULL)) return;
1302 mateusz.vi 490 
 
1327 mateusz.vi 491 
  cursor_left(db);
492 
  del(db);
1302 mateusz.vi 493 
}
494 
 
495 
 
1286 mateusz.vi 496 
/* a custom argv-parsing routine that looks directly inside the PSP, avoids the need
497 
 * of argc and argv, saves some 330 bytes of binary size */
1352 mateusz.vi 498 
static const char *parseargv(void) {
1286 mateusz.vi 499 
  char *tail = (void *)0x81; /* THIS WORKS ONLY IN SMALL MEMORY MODEL */
1348 mateusz.vi 500 
  unsigned short count = 0;
1352 mateusz.vi 501 
  char *argv[2];
1286 mateusz.vi 502 
 
1352 mateusz.vi 503 
  while (count < 2) {
1286 mateusz.vi 504 
    /* jump to nearest arg */
505 
    while (*tail == ' ') {
506 
      *tail = 0;
507 
      tail++;
508 
    }
509 
 
510 
    if (*tail == '\r') {
511 
      *tail = 0;
512 
      break;
513 
    }
514 
 
515 
    argv[count++] = tail;
516 
 
517 
    /* jump to next delimiter */
518 
    while ((*tail != ' ') && (*tail != '\r')) tail++;
519 
  }
520 
 
521 
  /* check args now */
1321 mateusz.vi 522 
  if (count == 0) return("");
1352 mateusz.vi 523 
  if (count == 1) return(argv[0]);
1286 mateusz.vi 524 
 
1352 mateusz.vi 525 
  return(NULL);
1286 mateusz.vi 526 
}
527 
 
528 
 
1346 mateusz.vi 529 
/* returns 0 on success, 1 on file not found, 2 on other error */
530 
static unsigned char loadfile(struct file *db, const char *fname) {
1324 mateusz.vi 531 
  char buff[512]; /* read one entire sector at a time (faster) */
532 
  char *buffptr;
533 
  unsigned int len, llen;
1287 mateusz.vi 534 
  int fd;
1324 mateusz.vi 535 
  unsigned char eolfound;
1287 mateusz.vi 536 
 
1339 mateusz.vi 537 
  bzero(db, sizeof(db));
538 
  memcpy(db->fname, fname, strlen(fname));
1321 mateusz.vi 539 
 
540 
  if (*fname == 0) goto SKIPLOADING;
541 
 
1287 mateusz.vi 542 
  if (_dos_open(fname, O_RDONLY, &fd) != 0) {
1346 mateusz.vi 543 
    return(1);
1287 mateusz.vi 544 
  }
545 
 
1313 mateusz.vi 546 
  db->lfonly = 1;
547 
 
1324 mateusz.vi 548 
  /* start by adding an empty line */
1328 mateusz.vi 549 
  if (line_add(db, NULL, 0) != 0) {
1324 mateusz.vi 550 
    /* TODO ERROR HANDLING */
551 
  }
1287 mateusz.vi 552 
 
1324 mateusz.vi 553 
  for (eolfound = 0;;) {
554 
    unsigned short consumedbytes;
555 
 
556 
    if ((_dos_read(fd, buff, sizeof(buff), &len) != 0) || (len == 0)) break;
557 
    buffptr = buff;
558 
 
559 
    FINDLINE:
560 
 
561 
    /* look for nearest \n */
562 
    for (consumedbytes = 0;; consumedbytes++) {
563 
      if (consumedbytes == len) {
564 
        llen = consumedbytes;
565 
        break;
1323 mateusz.vi 566 
      }
1324 mateusz.vi 567 
      if (buffptr[consumedbytes] == '\r') {
568 
        llen = consumedbytes;
569 
        consumedbytes++;
570 
        db->lfonly = 0;
1320 mateusz.vi 571 
        break;
572 
      }
1324 mateusz.vi 573 
      if (buffptr[consumedbytes] == '\n') {
574 
        eolfound = 1;
575 
        llen = consumedbytes;
576 
        consumedbytes++;
577 
        break;
578 
      }
1287 mateusz.vi 579 
    }
1324 mateusz.vi 580 
 
581 
    /* consumedbytes is the amount of bytes processed from buffptr,
582 
     * llen is the length of line's payload (without its line terminator) */
583 
 
584 
    /* append content, if line is non-empty */
585 
    if ((llen > 0) && (line_append(db, buffptr, llen) != 0)) {
1339 mateusz.vi 586 
      goto IOERR;
1287 mateusz.vi 587 
    }
588 
 
1324 mateusz.vi 589 
    /* add a new line if necessary */
590 
    if (eolfound) {
1328 mateusz.vi 591 
      if (line_add(db, NULL, 0) != 0) {
1339 mateusz.vi 592 
        goto IOERR;
1324 mateusz.vi 593 
      }
594 
      eolfound = 0;
595 
    }
1287 mateusz.vi 596 
 
1324 mateusz.vi 597 
    /* anything left? process the buffer leftover again */
598 
    if (consumedbytes < len) {
599 
      len -= consumedbytes;
600 
      buffptr += consumedbytes;
601 
      goto FINDLINE;
602 
    }
603 
 
604 
  }
605 
 
1287 mateusz.vi 606 
  _dos_close(fd);
607 
 
1321 mateusz.vi 608 
  SKIPLOADING:
609 
 
1320 mateusz.vi 610 
  /* add an empty line at end if not present already, also rewind cursor to top of file */
1339 mateusz.vi 611 
  if ((db->cursor == NULL) || (db->cursor->len != 0)) line_add(db, NULL, 0);
612 
  db_rewind(db);
1320 mateusz.vi 613 
 
1346 mateusz.vi 614 
  return(0);
1339 mateusz.vi 615 
 
616 
  IOERR:
617 
  _dos_close(fd);
1346 mateusz.vi 618 
  return(2);
1287 mateusz.vi 619 
}
620 
 
621 
 
1332 mateusz.vi 622 
static int savefile(const struct file *db, const char *newfname) {
1311 mateusz.vi 623 
  int fd;
624 
  const struct line far *l;
625 
  unsigned bytes;
1313 mateusz.vi 626 
  unsigned char eollen;
627 
  unsigned char eolbuf[2];
1332 mateusz.vi 628 
  int errflag = 0;
1313 mateusz.vi 629 
 
1332 mateusz.vi 630 
  /* either create a new file if newfname provided, or... */
631 
  if (newfname) {
632 
    if (_dos_creatnew(newfname, _A_NORMAL, &fd) != 0) return(-1);
633 
  } else { /* ...open db->fname */
634 
    if (_dos_open(db->fname, O_WRONLY, &fd) != 0) return(-1);
1311 mateusz.vi 635 
  }
636 
 
637 
  l = db->cursor;
638 
  while (l->prev) l = l->prev;
639 
 
1313 mateusz.vi 640 
  /* preset line terminators */
641 
  if (db->lfonly) {
642 
    eolbuf[0] = '\n';
643 
    eollen = 1;
644 
  } else {
645 
    eolbuf[0] = '\r';
646 
    eolbuf[1] = '\n';
647 
    eollen = 2;
648 
  }
649 
 
1311 mateusz.vi 650 
  while (l) {
1324 mateusz.vi 651 
    /* do not write the last empty line, it is only useful for edition */
652 
    if (l->len != 0) {
1332 mateusz.vi 653 
      errflag |= _dos_write(fd, l->payload, l->len, &bytes);
1324 mateusz.vi 654 
    } else if (l->next == NULL) {
655 
      break;
656 
    }
1332 mateusz.vi 657 
    errflag |= _dos_write(fd, eolbuf, eollen, &bytes);
1311 mateusz.vi 658 
    l = l->next;
659 
  }
660 
 
1332 mateusz.vi 661 
  errflag |= _dos_close(fd);
1330 mateusz.vi 662 
 
1332 mateusz.vi 663 
  return(errflag);
1311 mateusz.vi 664 
}
665 
 
666 
 
1327 mateusz.vi 667 
static void insert_in_line(struct file *db, const char *databuf, unsigned short len) {
1340 mateusz.vi 668 
  if (curline_resize(db, db->cursor->len + len) == 0) {
1317 mateusz.vi 669 
    unsigned short off = db->xoffset + db->cursorposx;
1351 mateusz.vi 670 
    db->modflag = '*';
1317 mateusz.vi 671 
    _fmemmove(db->cursor->payload + off + len, db->cursor->payload + off, db->cursor->len - off + 1);
672 
    db->cursor->len += len;
1327 mateusz.vi 673 
    uidirty.from = db->cursorposy;
674 
    uidirty.to = db->cursorposy;
1317 mateusz.vi 675 
    while (len--) {
676 
      db->cursor->payload[off++] = *databuf;
677 
      databuf++;
1327 mateusz.vi 678 
      cursor_right(db);
1317 mateusz.vi 679 
    }
680 
  }
681 
}
682 
 
683 
 
1342 mateusz.vi 684 
static void clear_file(struct file *db) {
685 
 
686 
  /* free the entire linked list of lines */
687 
  db_rewind(db);
688 
  while (db->cursor) {
689 
    struct line far *victim;
690 
    victim = db->cursor;
691 
    db->cursor = db->cursor->next;
692 
    line_free(victim);
693 
  }
694 
 
695 
  /* zero out the struct */
696 
  bzero(db, sizeof(struct file));
697 
}
698 
 
699 
 
1343 mateusz.vi 700 
/* recompute db->curline by counting nodes in linked list */
701 
static void recompute_curline(struct file *db) {
702 
  const struct line far *l = db->cursor;
703 
 
704 
  db->curline = 0;
705 
  while (l->prev != NULL) {
706 
    db->curline += 1;
707 
    l = l->prev;
708 
  }
709 
}
710 
 
711 
 
1347 mateusz.vi 712 
/* main returns nothing, ie. sved always exits with a zero exit code
713 
 * (this saves 20 bytes of executable footprint) */
714 
void main(void) {
1346 mateusz.vi 715 
  static struct file dbarr[1];
1286 mateusz.vi 716 
  const char *fname;
1346 mateusz.vi 717 
  struct file *db = dbarr;
1275 mateusz.vi 718 
 
1307 mateusz.vi 719 
  {
720 
    char nlspath[128], lang[8];
721 
    svarlang_autoload_pathlist("sved", mdr_dos_getenv(nlspath, "NLSPATH", sizeof(nlspath)), mdr_dos_getenv(lang, "LANG", sizeof(lang)));
722 
  }
1282 mateusz.vi 723 
 
1286 mateusz.vi 724 
  fname = parseargv();
725 
 
1350 mateusz.vi 726 
  if ((fname == NULL) || (*fname == '/')) {
1302 mateusz.vi 727 
    mdr_coutraw_puts(svarlang_str(1,0)); /* usage: sved file.txt */
1347 mateusz.vi 728 
    return;
1275 mateusz.vi 729 
  }
730 
 
1282 mateusz.vi 731 
  /* load file */
1346 mateusz.vi 732 
  {
733 
    unsigned char err = loadfile(db, fname);
734 
    if (err == 1) {
735 
      mdr_coutraw_puts(svarlang_str(0,11)); /* file not found */
1347 mateusz.vi 736 
      return;
1346 mateusz.vi 737 
    } else if (err != 0) {
738 
      mdr_coutraw_puts(svarlang_str(0,10)); /* ERROR */
1347 mateusz.vi 739 
      return;
1346 mateusz.vi 740 
    }
741 
  }
1282 mateusz.vi 742 
 
1333 mateusz.vi 743 
  if (mdr_cout_init(&screenw, &screenh)) {
744 
    /* load color scheme if mdr_cout_init returns a color flag */
745 
    SCHEME_TEXT = 0x17;
746 
    SCHEME_STBAR1 = 0x70;
747 
    SCHEME_STBAR2 = 0x78;
748 
    SCHEME_STBAR3 = 0xf0;
749 
    SCHEME_SCROLL = 0x70;
750 
    SCHEME_MSG = 0xf0;
751 
    SCHEME_ERR = 0x4f;
752 
  }
1275 mateusz.vi 753 
 
754 
  for (;;) {
755 
    int k;
756 
 
1327 mateusz.vi 757 
    check_cursor_not_after_eol(db);
1320 mateusz.vi 758 
    mdr_cout_locate(db->cursorposy, db->cursorposx);
1275 mateusz.vi 759 
 
1327 mateusz.vi 760 
    if (uidirty.from != 0xff) {
761 
      ui_refresh(db);
762 
      uidirty.from = 0xff;
1282 mateusz.vi 763 
    }
1342 mateusz.vi 764 
    if (uidirty.statusbar) {
765 
      ui_basic(db);
766 
      uidirty.statusbar = 0;
767 
    }
1328 mateusz.vi 768 
#ifdef DBG_LINENUM
769 
      {
770 
        char ddd[10];
771 
        db->curline += 1;
772 
        ddd[0] = '0' + db->curline / 100;
773 
        ddd[1] = '0' + (db->curline % 100) / 10;
774 
        ddd[2] = '0' + (db->curline % 10);
775 
        db->curline -= 1;
776 
        ddd[3] = '/';
777 
        ddd[4] = '0' + db->totlines / 100;
778 
        ddd[5] = '0' + (db->totlines % 100) / 10;
779 
        ddd[6] = '0' + (db->totlines % 10);
780 
        ddd[7] = 0;
1333 mateusz.vi 781 
        mdr_cout_str(screenh - 1, 40, ddd, SCHEME_STBAR1, sizeof(ddd));
1328 mateusz.vi 782 
      }
783 
#endif
1275 mateusz.vi 784 
 
785 
    k = keyb_getkey();
1282 mateusz.vi 786 
 
1275 mateusz.vi 787 
    if (k == 0x150) { /* down */
1327 mateusz.vi 788 
      cursor_down(db);
1275 mateusz.vi 789 
 
790 
    } else if (k == 0x148) { /* up */
1327 mateusz.vi 791 
      cursor_up(db);
1275 mateusz.vi 792 
 
793 
    } else if (k == 0x14D) { /* right */
1327 mateusz.vi 794 
      cursor_right(db);
1275 mateusz.vi 795 
 
796 
    } else if (k == 0x14B) { /* left */
1327 mateusz.vi 797 
      cursor_left(db);
1275 mateusz.vi 798 
 
1282 mateusz.vi 799 
    } else if (k == 0x149) { /* pgup */
1334 mateusz.vi 800 
      unsigned char dist = db->cursorposy + screenh - 1;
801 
      while ((dist != 0) && (db->cursor->prev != NULL)) {
802 
        db->cursor = db->cursor->prev;
803 
        dist--;
804 
      }
805 
      if (dist != 0) {
806 
        db->cursorposy = 0;
807 
        db->cursorposx = 0;
808 
      } else {
809 
        dist = db->cursorposy;
810 
        while ((dist--) && (db->cursor->next)) db->cursor = db->cursor->next;
811 
      }
812 
      uidirty.from = 0;
813 
      uidirty.to = 0xff;
1343 mateusz.vi 814 
      recompute_curline(db);
1282 mateusz.vi 815 
 
816 
    } else if (k == 0x151) { /* pgdown */
1334 mateusz.vi 817 
      unsigned char dist = screenh + screenh - db->cursorposy - 3;
818 
      while ((dist != 0) && (db->cursor->next != NULL)) {
819 
        db->cursor = db->cursor->next;
820 
        dist--;
821 
      }
822 
      if (dist != 0) {
823 
        db->cursorposy = screenh - 2;
824 
        if (db->totlines <= db->cursorposy) db->cursorposy = db->totlines - 1;
825 
        db->cursorposx = 0;
826 
      } else {
827 
        dist = screenh - 2 - db->cursorposy;
828 
        while ((dist--) && (db->cursor->prev)) db->cursor = db->cursor->prev;
829 
      }
830 
      uidirty.from = 0;
831 
      uidirty.to = 0xff;
1343 mateusz.vi 832 
      recompute_curline(db);
1282 mateusz.vi 833 
 
834 
    } else if (k == 0x147) { /* home */
1327 mateusz.vi 835 
       cursor_home(db);
1282 mateusz.vi 836 
 
837 
    } else if (k == 0x14F) { /* end */
1327 mateusz.vi 838 
       cursor_eol(db);
1282 mateusz.vi 839 
 
1275 mateusz.vi 840 
    } else if (k == 0x1B) { /* ESC */
1342 mateusz.vi 841 
      if (ui_confirm_if_unsaved(db) == 0) break;
1275 mateusz.vi 842 
 
1289 mateusz.vi 843 
    } else if (k == 0x0D) { /* ENTER */
1328 mateusz.vi 844 
      unsigned short off = db->xoffset + db->cursorposx;
1289 mateusz.vi 845 
      /* add a new line */
1328 mateusz.vi 846 
      if (line_add(db, db->cursor->payload + off, db->cursor->len - off) == 0) {
1351 mateusz.vi 847 
        db->modflag = '*';
1328 mateusz.vi 848 
        db->cursor = db->cursor->prev; /* back to original line */
1289 mateusz.vi 849 
        /* trim the line above */
1328 mateusz.vi 850 
        db->cursor->len = off;
1289 mateusz.vi 851 
        /* move cursor to the (new) line below */
1343 mateusz.vi 852 
        db->curline -= 1;
1328 mateusz.vi 853 
        uidirty.from = db->cursorposy;
1327 mateusz.vi 854 
        uidirty.to = 0xff;
1328 mateusz.vi 855 
        cursor_down(db);
856 
        cursor_home(db);
1289 mateusz.vi 857 
      } else {
858 
        /* ERROR: OUT OF MEMORY */
859 
      }
860 
 
1292 mateusz.vi 861 
    } else if (k == 0x153) {  /* DEL */
1327 mateusz.vi 862 
      del(db);
1292 mateusz.vi 863 
 
1302 mateusz.vi 864 
    } else if (k == 0x008) { /* BKSPC */
1327 mateusz.vi 865 
      bkspc(db);
1302 mateusz.vi 866 
 
1308 mateusz.vi 867 
    } else if ((k >= 0x20) && (k <= 0xff)) { /* "normal" character */
1317 mateusz.vi 868 
      char c = k;
1327 mateusz.vi 869 
      insert_in_line(db, &c, 1);
1308 mateusz.vi 870 
 
1317 mateusz.vi 871 
    } else if (k == 0x009) { /* TAB */
1348 mateusz.vi 872 
      insert_in_line(db, "        ", 8);
1317 mateusz.vi 873 
 
1309 mateusz.vi 874 
    } else if (k == 0x13b) { /* F1 */
1326 mateusz.vi 875 
      ui_help();
1327 mateusz.vi 876 
      uidirty.from = 0;
877 
      uidirty.to = 0xff;
1309 mateusz.vi 878 
 
1342 mateusz.vi 879 
    } else if (k == 0x13c) { /* F2 (new file) */
1348 mateusz.vi 880 
      if (ui_confirm_if_unsaved(db) == 0) {
881 
        clear_file(db);
882 
        /* add a single empty line */
883 
        line_add(db, NULL, 0);
884 
      }
1342 mateusz.vi 885 
      uidirty.from = 0;
886 
      uidirty.to = 0xff;
887 
      uidirty.statusbar = 1;
888 
 
1345 mateusz.vi 889 
    } else if (k == 0x13d) { /* F3 (load file) */
890 
      char fname[25];
891 
 
892 
      /* display a warning if unsaved changes are pending */
893 
      if (db->modflag != 0) ui_msg(svarlang_str(0,4), svarlang_str(0,8), SCHEME_MSG);
894 
 
895 
      /* ask for filename */
896 
      ui_getstring(svarlang_str(0,7), fname, sizeof(fname));
897 
      if (fname[0] != 0) {
1346 mateusz.vi 898 
        unsigned char err;
1345 mateusz.vi 899 
        clear_file(db);
1346 mateusz.vi 900 
        err = loadfile(db, fname);
901 
        if (err != 0) {
902 
          if (err == 1) {
903 
            ui_msg(svarlang_str(0,11), NULL, SCHEME_ERR); /* file not found */
904 
          } else {
905 
            ui_msg(svarlang_str(0,10), NULL, SCHEME_ERR);  /* ERROR */
906 
          }
907 
          mdr_bios_tickswait(44); /* 3s */
908 
          clear_file(db);
909 
        }
1345 mateusz.vi 910 
      }
911 
      uidirty.from = 0;
912 
      uidirty.to = 0xff;
913 
      uidirty.statusbar = 1;
914 
 
1332 mateusz.vi 915 
    } else if ((k == 0x13f) || (k == 0x140)) { /* F5 or F6 */
916 
      int saveres;
917 
 
918 
      if ((k == 0x140) || (db->fname[0] == 0)) { /* save as... */
919 
        char fname[25];
920 
        ui_getstring(svarlang_str(0,6), fname, sizeof(fname));
921 
        if (*fname == 0) continue;
922 
        saveres = savefile(db, fname);
923 
        if (saveres == 0) memcpy(db->fname, fname, sizeof(fname));
924 
      } else {
925 
        saveres = savefile(db, NULL);
926 
      }
927 
 
928 
      if (saveres == 0) {
1330 mateusz.vi 929 
        db->modflag = 0;
1333 mateusz.vi 930 
        ui_msg(svarlang_str(0, 2), NULL, SCHEME_MSG);
1322 mateusz.vi 931 
        mdr_bios_tickswait(11); /* 11 ticks is about 600 ms */
932 
      } else {
1333 mateusz.vi 933 
        ui_msg(svarlang_str(0, 3), NULL, SCHEME_ERR);
1322 mateusz.vi 934 
        mdr_bios_tickswait(36); /* 2s */
935 
      }
1311 mateusz.vi 936 
 
1332 mateusz.vi 937 
      ui_refresh(db);
1342 mateusz.vi 938 
      uidirty.statusbar = 1;
1332 mateusz.vi 939 
 
1314 mateusz.vi 940 
    } else if (k == 0x144) { /* F10 */
1351 mateusz.vi 941 
      db->modflag = '*';
1320 mateusz.vi 942 
      db->lfonly ^= 1;
1342 mateusz.vi 943 
      uidirty.statusbar = 1;
1353 mateusz.vi 944 
      uidirty.from = 0;
945 
      uidirty.to = 0;
1314 mateusz.vi 946 
 
1325 mateusz.vi 947 
    } else if (k == 0x174) { /* CTRL+ArrRight - jump to next word */
948 
      /* if currently cursor is on a non-space, then fast-forward to nearest space or EOL */
949 
      for (;;) {
950 
        if (db->xoffset + db->cursorposx == db->cursor->len) break;
951 
        if (db->cursor->payload[db->xoffset + db->cursorposx] == ' ') break;
1327 mateusz.vi 952 
        cursor_right(db);
1325 mateusz.vi 953 
      }
954 
      /* now skip to next non-space or end of file */
955 
      for (;;) {
1327 mateusz.vi 956 
        cursor_right(db);
1325 mateusz.vi 957 
        if (db->cursor->payload[db->xoffset + db->cursorposx] != ' ') break;
958 
        if ((db->cursor->next == NULL) && (db->cursorposx + db->xoffset == db->cursor->len)) break;
959 
      }
960 
 
961 
    } else if (k == 0x173) { /* CTRL+ArrLeft - jump to prev word */
1327 mateusz.vi 962 
      cursor_left(db);
1325 mateusz.vi 963 
      /* if currently cursor is on a space, then fast-forward to nearest non-space or start of line */
964 
      for (;;) {
965 
        if ((db->xoffset == 0) && (db->cursorposx == 0)) break;
966 
        if (db->cursor->payload[db->xoffset + db->cursorposx] != ' ') break;
1327 mateusz.vi 967 
        cursor_left(db);
1325 mateusz.vi 968 
      }
969 
      /* now skip to next space or start of file */
970 
      for (;;) {
1327 mateusz.vi 971 
        cursor_left(db);
1325 mateusz.vi 972 
        if (db->cursor->payload[db->xoffset + db->cursorposx] == ' ') {
1327 mateusz.vi 973 
          cursor_right(db);
1325 mateusz.vi 974 
          break;
975 
        }
976 
        if ((db->cursorposx == 0) && (db->xoffset == 0)) break;
977 
      }
978 
 
1333 mateusz.vi 979 
#ifdef DBG_UNHKEYS
1282 mateusz.vi 980 
    } else { /* UNHANDLED KEY - TODO IGNORE THIS IN PRODUCTION RELEASE */
981 
      char buff[4];
982 
      const char *HEX = "0123456789ABCDEF";
983 
      buff[0] = HEX[(k >> 8) & 15];
984 
      buff[1] = HEX[(k >> 4) & 15];
985 
      buff[2] = HEX[k & 15];
1333 mateusz.vi 986 
      mdr_cout_str(screenh - 1, 0, "UNHANDLED KEY: 0x", SCHEME_STBAR1, 17);
987 
      mdr_cout_str(screenh - 1, 17, buff, SCHEME_STBAR1, 3);
1275 mateusz.vi 988 
      keyb_getkey();
989 
      break;
1333 mateusz.vi 990 
#endif
1275 mateusz.vi 991 
    }
992 
  }
993 
 
994 
  mdr_cout_close();
995 
 
1320 mateusz.vi 996 
  /* no need to free memory, DOS will do it for me */
1275 mateusz.vi 997 
 
1347 mateusz.vi 998 
  return;
1275 mateusz.vi 999 
}