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mateusz.vi |
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/* Sved, the SvarDOS editor
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*
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* Copyright (C) 2023 Mateusz Viste
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*
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* Sved is released under the terms of the MIT license.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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mateusz.vi |
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mateusz.vi |
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#include <dos.h>
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#include <fcntl.h>
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mateusz.vi |
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#include <stdlib.h>
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#include <string.h>
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mateusz.vi |
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#include <malloc.h> /* _fcalloc() */
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mateusz.vi |
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mateusz.vi |
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#include "mdr\bios.h"
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mateusz.vi |
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#include "mdr\cout.h"
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mateusz.vi |
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#include "mdr\dos.h"
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mateusz.vi |
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#include "mdr\keyb.h"
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mateusz.vi |
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#include "svarlang\svarlang.h"
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mateusz.vi |
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#define COL_TXT 0
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#define COL_STATUSBAR1 1
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#define COL_STATUSBAR2 2
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#define COL_SCROLLBAR 3
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/* preload the mono scheme (to be overloaded at runtime if color adapter present) */
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static unsigned char scheme[] = {0x07, 0x70, 0x70, 0x70};
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#define SCROLL_CURSOR 0xB1
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struct line {
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mateusz.vi |
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struct line far *prev;
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struct line far *next;
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mateusz.vi |
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unsigned short len;
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char payload[1];
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};
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struct linedb {
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mateusz.vi |
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struct line far *cursor;
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mateusz.vi |
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unsigned short xoffset;
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};
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mateusz.vi |
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/* returns non-zero on error */
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mateusz.vi |
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static int line_add(struct linedb *db, const char far *line) {
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unsigned short slen;
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mateusz.vi |
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struct line far *l;
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mateusz.vi |
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mateusz.vi |
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/* slen = strlen(line) (but for far pointer) */
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for (slen = 0; line[slen] != 0; slen++);
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mateusz.vi |
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/* trim out CR/LF line endings */
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if ((slen >= 2) && (line[slen - 2] == '\r')) {
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slen -= 2;
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} else if ((slen >= 1) && (line[slen - 1] == '\n')) {
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slen--;
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}
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mateusz.vi |
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l = _fcalloc(1, sizeof(struct line) + slen + 1);
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mateusz.vi |
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if (l == NULL) return(-1);
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mateusz.vi |
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l->prev = db->cursor;
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if (db->cursor) {
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l->next = db->cursor->next;
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db->cursor->next = l;
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l->next->prev = l;
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}
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db->cursor = l;
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mateusz.vi |
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_fmemcpy(l->payload, line, slen);
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mateusz.vi |
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l->len = slen;
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mateusz.vi |
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return(0);
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mateusz.vi |
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}
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mateusz.vi |
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static void db_rewind(struct linedb *db) {
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mateusz.vi |
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if (db->cursor == NULL) return;
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while (db->cursor->prev) db->cursor = db->cursor->prev;
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}
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mateusz.vi |
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static void load_colorscheme(void) {
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mateusz.vi |
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scheme[COL_TXT] = 0x17;
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scheme[COL_STATUSBAR1] = 0x70;
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scheme[COL_STATUSBAR2] = 0x78;
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scheme[COL_SCROLLBAR] = 0x70;
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}
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mateusz.vi |
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static void ui_basic(unsigned char screenw, unsigned char screenh, const char *fname) {
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mateusz.vi |
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unsigned char i;
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mateusz.vi |
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const char *s = svarlang_strid(0); /* HELP */
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mateusz.vi |
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unsigned char helpcol = screenw - (strlen(s) + 4);
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/* clear screen */
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mdr_cout_cls(scheme[COL_TXT]);
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/* status bar */
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for (i = 0; i < helpcol; i++) {
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mdr_cout_char(screenh - 1, i, *fname, scheme[COL_STATUSBAR1]);
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if (*fname != 0) fname++;
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}
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mdr_cout_str(screenh - 1, helpcol, " F1=", scheme[COL_STATUSBAR2], 40);
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mdr_cout_str(screenh - 1, helpcol + 4, s, scheme[COL_STATUSBAR2], 40);
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/* scroll bar */
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for (i = 0; i < (screenh - 1); i++) {
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mdr_cout_char(i, screenw - 1, SCROLL_CURSOR, scheme[COL_SCROLLBAR]);
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}
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}
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mateusz.vi |
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static void ui_msg(const char *msg, unsigned char screenw, unsigned char screenh, unsigned char *uidirtyfrom, unsigned char *uidirtyto) {
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unsigned short x, y, msglen, i;
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msglen = strlen(msg);
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y = (screenh - 4) >> 1;
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x = (screenw - msglen - 4) >> 1;
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for (i = y+2; i >= y; i--) mdr_cout_char_rep(i, x, ' ', scheme[COL_STATUSBAR1], msglen + 2);
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mdr_cout_str(y+1, x+1, msg, scheme[COL_STATUSBAR1], msglen);
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if (*uidirtyfrom > y) *uidirtyfrom = y;
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if (*uidirtyto < y+2) *uidirtyto = y+2;
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}
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mateusz.vi |
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static void ui_help(unsigned char screenw) {
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#define MAXLINLEN 35
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mateusz.vi |
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unsigned short i, offset;
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mateusz.vi |
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offset = (screenw - MAXLINLEN + 1) >> 1;
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mdr_cout_cursor_hide();
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for (i = 2; i <= 12; i++) {
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mateusz.vi |
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mdr_cout_char_rep(i, offset - 2, ' ', scheme[COL_STATUSBAR1], MAXLINLEN);
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mateusz.vi |
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}
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mdr_cout_str(3, offset, svarlang_str(0, 0), scheme[COL_STATUSBAR1], MAXLINLEN);
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for (i = 0; i <= 2; i++) {
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mdr_cout_str(5 + i, offset, svarlang_str(8, i), scheme[COL_STATUSBAR1], MAXLINLEN);
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}
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mdr_cout_str(9, offset, svarlang_str(8, 10), scheme[COL_STATUSBAR1], MAXLINLEN);
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mdr_cout_str(11, offset, svarlang_str(8, 11), scheme[COL_STATUSBAR1], MAXLINLEN);
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keyb_getkey();
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mdr_cout_cursor_show();
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#undef MAXLINLEN
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}
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mateusz.vi |
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static void ui_refresh(const struct linedb *db, unsigned char screenw, unsigned char screenh, unsigned char uidirtyfrom, unsigned char uidirtyto, unsigned char y) {
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mateusz.vi |
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unsigned char len;
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mateusz.vi |
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const struct line far *l;
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mateusz.vi |
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mateusz.vi |
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#ifdef DBG_REFRESH
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mateusz.vi |
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static char m = 'a';
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m++;
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if (m > 'z') m = 'a';
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mateusz.vi |
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#endif
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mateusz.vi |
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/* rewind cursor line to first line that needs redrawing */
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for (l = db->cursor; y > uidirtyfrom; y--) l = l->prev;
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mateusz.vi |
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mateusz.vi |
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/* iterate over lines and redraw whatever needs to be redrawn */
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for (; l != NULL; l = l->next, y++) {
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/* skip lines that do not need to be refreshed */
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if (y < uidirtyfrom) continue;
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if (y > uidirtyto) break;
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mateusz.vi |
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mateusz.vi |
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if (db->xoffset < l->len) {
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mateusz.vi |
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for (len = 0; l->payload[len] != 0; len++) mdr_cout_char(y, len, l->payload[len], scheme[COL_TXT]);
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} else {
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len = 0;
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}
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while (len < screenw - 1) mdr_cout_char(y, len++, ' ', scheme[COL_TXT]);
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mateusz.vi |
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mateusz.vi |
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#ifdef DBG_REFRESH
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mateusz.vi |
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mdr_cout_char(y, 0, m, scheme[COL_STATUSBAR1]);
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mateusz.vi |
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#endif
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mateusz.vi |
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mateusz.vi |
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if (y == screenh - 2) break;
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}
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mateusz.vi |
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mateusz.vi |
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}
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mateusz.vi |
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static void check_cursor_not_after_eol(struct linedb *db, unsigned char *cursorpos, unsigned char *uidirtyfrom, unsigned char *uidirtyto) {
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if (db->xoffset + *cursorpos <= db->cursor->len) return;
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if (db->cursor->len < db->xoffset) {
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*cursorpos = 0;
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db->xoffset = db->cursor->len;
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mateusz.vi |
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*uidirtyfrom = 0;
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*uidirtyto = 0xff;
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} else {
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*cursorpos = db->cursor->len - db->xoffset;
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}
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}
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static void cursor_up(struct linedb *db, unsigned char *cursorposy, unsigned char *uidirtyfrom, unsigned char *uidirtyto) {
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if (db->cursor->prev != NULL) {
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db->cursor = db->cursor->prev;
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if (*cursorposy == 0) {
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mateusz.vi |
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*uidirtyfrom = 0;
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*uidirtyto = 0xff;
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mateusz.vi |
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} else {
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*cursorposy -= 1;
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}
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}
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}
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static void cursor_eol(struct linedb *db, unsigned char *cursorposx, unsigned char screenw, unsigned char *uidirtyfrom, unsigned char *uidirtyto) {
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/* adjust xoffset to make sure eol is visible on screen */
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if (db->xoffset > db->cursor->len) {
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db->xoffset = db->cursor->len - 1;
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*uidirtyfrom = 0;
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*uidirtyto = 0xff;
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}
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if (db->xoffset + screenw - 1 <= db->cursor->len) {
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db->xoffset = db->cursor->len - screenw + 2;
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*uidirtyfrom = 0;
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*uidirtyto = 0xff;
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}
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*cursorposx = db->cursor->len - db->xoffset;
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}
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mateusz.vi |
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static void cursor_down(struct linedb *db, unsigned char *cursorposy, unsigned char screenh, unsigned char *uidirtyfrom, unsigned char *uidirtyto) {
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mateusz.vi |
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if (db->cursor->next != NULL) {
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db->cursor = db->cursor->next;
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if (*cursorposy < screenh - 2) {
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*cursorposy += 1;
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} else {
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mateusz.vi |
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*uidirtyfrom = 0;
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*uidirtyto = 0xff;
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mateusz.vi |
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}
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}
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}
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mateusz.vi |
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static void cursor_left(struct linedb *db, unsigned char *cursorposx, unsigned char *cursorposy, unsigned char screenw, unsigned char *uidirtyfrom, unsigned char *uidirtyto) {
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if (*cursorposx > 0) {
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*cursorposx -= 1;
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} else if (db->xoffset > 0) {
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db->xoffset -= 1;
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*uidirtyfrom = 0;
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*uidirtyto = 0xff;
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} else if (db->cursor->prev != NULL) { /* jump to end of line above */
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cursor_up(db, cursorposy, uidirtyfrom, uidirtyto);
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cursor_eol(db, cursorposx, screenw, uidirtyfrom, uidirtyto);
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}
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}
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mateusz.vi |
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static void cursor_home(struct linedb *db, unsigned char *cursorposx, unsigned char *uidirtyfrom, unsigned char *uidirtyto) {
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mateusz.vi |
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*cursorposx = 0;
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mateusz.vi |
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if (db->xoffset != 0) {
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db->xoffset = 0;
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*uidirtyfrom = 0;
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*uidirtyto = 0xff;
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}
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mateusz.vi |
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}
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mateusz.vi |
284 |
static void cursor_right(struct linedb *db, unsigned char *cursorposx, unsigned char *cursorposy, unsigned char screenw, unsigned char screenh, unsigned char *uidirtyfrom, unsigned char *uidirtyto) {
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if (db->cursor->len > db->xoffset + *cursorposx) {
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if (*cursorposx < screenw - 2) {
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*cursorposx += 1;
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} else {
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db->xoffset += 1;
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*uidirtyfrom = 0;
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*uidirtyto = 0xff;
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}
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} else {
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cursor_down(db, cursorposy, screenh, uidirtyfrom, uidirtyto);
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cursor_home(db, cursorposx, uidirtyfrom, uidirtyto);
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}
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}
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mateusz.vi |
300 |
static void del(struct linedb *db, unsigned char cursorposx, unsigned char cursorposy, unsigned char *uidirtyfrom, unsigned char *uidirtyto) {
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if (cursorposx + db->xoffset < db->cursor->len) {
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_fmemmove(db->cursor->payload + cursorposx + db->xoffset, db->cursor->payload + cursorposx + db->xoffset + 1, db->cursor->len - cursorposx - db->xoffset);
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db->cursor->len -= 1; /* do this AFTER memmove so the copy includes the nul terminator */
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*uidirtyfrom = cursorposy;
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*uidirtyto = cursorposy;
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} else if (db->cursor->next != NULL) { /* cursor is at end of line: merge current line with next one (if there is a next one) */
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struct line far *nextline = db->cursor->next;
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if (db->cursor->next->len > 0) {
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309 |
void far *newptr = _frealloc(db->cursor, sizeof(struct line) + db->cursor->len + db->cursor->next->len + 1);
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310 |
if (newptr != NULL) {
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db->cursor = newptr;
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|
312 |
_fmemcpy(db->cursor->payload + db->cursor->len, db->cursor->next->payload, db->cursor->next->len + 1);
|
|
|
313 |
db->cursor->len += db->cursor->next->len;
|
|
|
314 |
}
|
|
|
315 |
}
|
|
|
316 |
db->cursor->next = db->cursor->next->next;
|
|
|
317 |
db->cursor->next->prev = db->cursor;
|
|
|
318 |
if (db->cursor->prev != NULL) db->cursor->prev->next = db->cursor; /* in case realloc changed my pointer */
|
|
|
319 |
_ffree(nextline);
|
|
|
320 |
*uidirtyfrom = cursorposy;
|
|
|
321 |
*uidirtyto = 0xff;
|
|
|
322 |
}
|
|
|
323 |
}
|
|
|
324 |
|
|
|
325 |
|
1302 |
mateusz.vi |
326 |
static void bkspc(struct linedb *db, unsigned char *cursorposx, unsigned char *cursorposy, unsigned char screenw, unsigned char *uidirtyfrom, unsigned char *uidirtyto) {
|
|
|
327 |
|
|
|
328 |
/* backspace is basically "left + del", not applicable only if cursor is on 1st byte of the file */
|
|
|
329 |
if ((*cursorposx == 0) && (db->xoffset == 0) && (db->cursor->prev == NULL)) return;
|
|
|
330 |
|
|
|
331 |
cursor_left(db, cursorposx, cursorposy, screenw, uidirtyfrom, uidirtyto);
|
|
|
332 |
del(db, *cursorposx, *cursorposy, uidirtyfrom, uidirtyto);
|
|
|
333 |
}
|
|
|
334 |
|
|
|
335 |
|
1286 |
mateusz.vi |
336 |
/* a custom argv-parsing routine that looks directly inside the PSP, avoids the need
|
|
|
337 |
* of argc and argv, saves some 330 bytes of binary size */
|
|
|
338 |
static char *parseargv(void) {
|
|
|
339 |
char *tail = (void *)0x81; /* THIS WORKS ONLY IN SMALL MEMORY MODEL */
|
|
|
340 |
unsigned char count = 0;
|
|
|
341 |
char *argv[4];
|
|
|
342 |
|
|
|
343 |
while (count < 4) {
|
|
|
344 |
/* jump to nearest arg */
|
|
|
345 |
while (*tail == ' ') {
|
|
|
346 |
*tail = 0;
|
|
|
347 |
tail++;
|
|
|
348 |
}
|
|
|
349 |
|
|
|
350 |
if (*tail == '\r') {
|
|
|
351 |
*tail = 0;
|
|
|
352 |
break;
|
|
|
353 |
}
|
|
|
354 |
|
|
|
355 |
argv[count++] = tail;
|
|
|
356 |
|
|
|
357 |
/* jump to next delimiter */
|
|
|
358 |
while ((*tail != ' ') && (*tail != '\r')) tail++;
|
|
|
359 |
}
|
|
|
360 |
|
|
|
361 |
/* check args now */
|
|
|
362 |
if (count != 1) return(NULL);
|
|
|
363 |
|
|
|
364 |
return(argv[0]);
|
|
|
365 |
}
|
|
|
366 |
|
|
|
367 |
|
1287 |
mateusz.vi |
368 |
static int loadfile(struct linedb *db, const char *fname) {
|
|
|
369 |
char buff[1024];
|
|
|
370 |
unsigned int prevlen = 0, len, llen;
|
|
|
371 |
int fd;
|
|
|
372 |
int r = 0;
|
|
|
373 |
|
|
|
374 |
if (_dos_open(fname, O_RDONLY, &fd) != 0) {
|
|
|
375 |
mdr_coutraw_puts("Failed to open file:");
|
|
|
376 |
mdr_coutraw_puts(fname);
|
|
|
377 |
return(-1);
|
|
|
378 |
}
|
|
|
379 |
|
|
|
380 |
do {
|
|
|
381 |
if (_dos_read(fd, buff + prevlen, sizeof(buff) - prevlen, &len) == 0) {
|
|
|
382 |
len += prevlen;
|
|
|
383 |
} else {
|
|
|
384 |
len = prevlen;
|
|
|
385 |
}
|
|
|
386 |
|
|
|
387 |
/* look for nearest \n and replace with 0*/
|
|
|
388 |
for (llen = 0; buff[llen] != '\n'; llen++) {
|
|
|
389 |
if (llen == sizeof(buff)) break;
|
|
|
390 |
}
|
|
|
391 |
buff[llen] = 0;
|
|
|
392 |
if ((llen > 0) && (buff[llen - 1])) buff[llen - 1] = 0; /* trim \r if line ending is cr/lf */
|
|
|
393 |
if (line_add(db, buff) != 0) {
|
|
|
394 |
mdr_coutraw_puts("out of memory");
|
|
|
395 |
r = -1;
|
|
|
396 |
break;
|
|
|
397 |
}
|
|
|
398 |
|
|
|
399 |
len -= llen + 1;
|
|
|
400 |
memmove(buff, buff + llen + 1, len);
|
|
|
401 |
prevlen = len;
|
|
|
402 |
} while (len > 0);
|
|
|
403 |
|
|
|
404 |
_dos_close(fd);
|
|
|
405 |
|
|
|
406 |
return(r);
|
|
|
407 |
}
|
|
|
408 |
|
|
|
409 |
|
1311 |
mateusz.vi |
410 |
static int savefile(const struct linedb *db, const char *fname) {
|
|
|
411 |
int fd;
|
|
|
412 |
const struct line far *l;
|
|
|
413 |
unsigned bytes;
|
|
|
414 |
if (_dos_open(fname, O_WRONLY, &fd) != 0) {
|
|
|
415 |
return(-1);
|
|
|
416 |
}
|
|
|
417 |
|
|
|
418 |
l = db->cursor;
|
|
|
419 |
while (l->prev) l = l->prev;
|
|
|
420 |
|
|
|
421 |
while (l) {
|
|
|
422 |
_dos_write(fd, l->payload, l->len, &bytes);
|
|
|
423 |
_dos_write(fd, "\r\n", 2, &bytes);
|
|
|
424 |
l = l->next;
|
|
|
425 |
}
|
|
|
426 |
|
|
|
427 |
_dos_close(fd);
|
|
|
428 |
return(0);
|
|
|
429 |
}
|
|
|
430 |
|
|
|
431 |
|
1286 |
mateusz.vi |
432 |
int main(void) {
|
|
|
433 |
const char *fname;
|
1275 |
mateusz.vi |
434 |
struct linedb db;
|
|
|
435 |
unsigned char screenw = 0, screenh = 0;
|
|
|
436 |
unsigned char cursorposx = 0, cursorposy = 0;
|
1282 |
mateusz.vi |
437 |
unsigned char uidirtyfrom = 0, uidirtyto = 0xff; /* make sure to redraw entire UI at first run */
|
1275 |
mateusz.vi |
438 |
|
|
|
439 |
bzero(&db, sizeof(db));
|
|
|
440 |
|
1307 |
mateusz.vi |
441 |
{
|
|
|
442 |
char nlspath[128], lang[8];
|
|
|
443 |
svarlang_autoload_pathlist("sved", mdr_dos_getenv(nlspath, "NLSPATH", sizeof(nlspath)), mdr_dos_getenv(lang, "LANG", sizeof(lang)));
|
|
|
444 |
}
|
1282 |
mateusz.vi |
445 |
|
1286 |
mateusz.vi |
446 |
fname = parseargv();
|
|
|
447 |
|
|
|
448 |
if (fname == NULL) {
|
1302 |
mateusz.vi |
449 |
mdr_coutraw_puts(svarlang_str(1,0)); /* usage: sved file.txt */
|
1275 |
mateusz.vi |
450 |
return(0);
|
|
|
451 |
}
|
|
|
452 |
|
1282 |
mateusz.vi |
453 |
/* load file */
|
1287 |
mateusz.vi |
454 |
if (loadfile(&db, fname) != 0) return(1);
|
1282 |
mateusz.vi |
455 |
|
1275 |
mateusz.vi |
456 |
/* add an empty line at end if not present already */
|
|
|
457 |
if (db.cursor->len != 0) line_add(&db, "");
|
|
|
458 |
|
|
|
459 |
if (mdr_cout_init(&screenw, &screenh)) load_colorscheme();
|
|
|
460 |
ui_basic(screenw, screenh, fname);
|
|
|
461 |
|
|
|
462 |
db_rewind(&db);
|
|
|
463 |
|
|
|
464 |
for (;;) {
|
|
|
465 |
int k;
|
|
|
466 |
|
1282 |
mateusz.vi |
467 |
check_cursor_not_after_eol(&db, &cursorposx, &uidirtyfrom, &uidirtyto);
|
1275 |
mateusz.vi |
468 |
mdr_cout_locate(cursorposy, cursorposx);
|
|
|
469 |
|
1282 |
mateusz.vi |
470 |
if (uidirtyfrom != 0xff) {
|
1310 |
mateusz.vi |
471 |
ui_refresh(&db, screenw, screenh, uidirtyfrom, uidirtyto, cursorposy);
|
1282 |
mateusz.vi |
472 |
uidirtyfrom = 0xff;
|
|
|
473 |
}
|
1275 |
mateusz.vi |
474 |
|
|
|
475 |
k = keyb_getkey();
|
1282 |
mateusz.vi |
476 |
|
1275 |
mateusz.vi |
477 |
if (k == 0x150) { /* down */
|
1282 |
mateusz.vi |
478 |
cursor_down(&db, &cursorposy, screenh, &uidirtyfrom, &uidirtyto);
|
1275 |
mateusz.vi |
479 |
|
|
|
480 |
} else if (k == 0x148) { /* up */
|
1282 |
mateusz.vi |
481 |
cursor_up(&db, &cursorposy, &uidirtyfrom, &uidirtyto);
|
1275 |
mateusz.vi |
482 |
|
|
|
483 |
} else if (k == 0x14D) { /* right */
|
1308 |
mateusz.vi |
484 |
cursor_right(&db, &cursorposx, &cursorposy, screenw, screenh, &uidirtyfrom, &uidirtyto);
|
1275 |
mateusz.vi |
485 |
|
|
|
486 |
} else if (k == 0x14B) { /* left */
|
1302 |
mateusz.vi |
487 |
cursor_left(&db, &cursorposx, &cursorposy, screenw, &uidirtyfrom, &uidirtyto);
|
1275 |
mateusz.vi |
488 |
|
1282 |
mateusz.vi |
489 |
} else if (k == 0x149) { /* pgup */
|
|
|
490 |
// TODO
|
|
|
491 |
|
|
|
492 |
} else if (k == 0x151) { /* pgdown */
|
|
|
493 |
// TODO
|
|
|
494 |
|
|
|
495 |
} else if (k == 0x147) { /* home */
|
|
|
496 |
cursor_home(&db, &cursorposx, &uidirtyfrom, &uidirtyto);
|
|
|
497 |
|
|
|
498 |
} else if (k == 0x14F) { /* end */
|
|
|
499 |
cursor_eol(&db, &cursorposx, screenw, &uidirtyfrom, &uidirtyto);
|
|
|
500 |
|
1275 |
mateusz.vi |
501 |
} else if (k == 0x1B) { /* ESC */
|
|
|
502 |
break;
|
|
|
503 |
|
1289 |
mateusz.vi |
504 |
} else if (k == 0x0D) { /* ENTER */
|
|
|
505 |
/* add a new line */
|
|
|
506 |
if (line_add(&db, db.cursor->payload + db.xoffset + cursorposx) == 0) {
|
|
|
507 |
/* trim the line above */
|
|
|
508 |
db.cursor->prev->len = db.xoffset + cursorposx;
|
|
|
509 |
db.cursor->prev->payload[db.cursor->prev->len] = 0;
|
|
|
510 |
/* move cursor to the (new) line below */
|
|
|
511 |
cursorposx = 0;
|
|
|
512 |
if (cursorposy < screenh - 2) {
|
|
|
513 |
uidirtyfrom = cursorposy;
|
|
|
514 |
cursorposy++;
|
|
|
515 |
} else {
|
|
|
516 |
uidirtyfrom = 0;
|
|
|
517 |
}
|
|
|
518 |
uidirtyto = 0xff;
|
|
|
519 |
} else {
|
|
|
520 |
/* ERROR: OUT OF MEMORY */
|
|
|
521 |
}
|
|
|
522 |
|
1292 |
mateusz.vi |
523 |
} else if (k == 0x153) { /* DEL */
|
|
|
524 |
del(&db, cursorposx, cursorposy, &uidirtyfrom, &uidirtyto);
|
|
|
525 |
|
1302 |
mateusz.vi |
526 |
} else if (k == 0x008) { /* BKSPC */
|
|
|
527 |
bkspc(&db, &cursorposx, &cursorposy, screenw, &uidirtyfrom, &uidirtyto);
|
|
|
528 |
|
1308 |
mateusz.vi |
529 |
} else if ((k >= 0x20) && (k <= 0xff)) { /* "normal" character */
|
|
|
530 |
struct line far *n;
|
|
|
531 |
n = _frealloc(db.cursor, sizeof(struct line) + db.cursor->len);
|
|
|
532 |
if (n != NULL) {
|
|
|
533 |
unsigned short off = db.xoffset + cursorposx;
|
|
|
534 |
if (n->prev) n->prev->next = n;
|
|
|
535 |
if (n->next) n->next->prev = n;
|
|
|
536 |
db.cursor = n;
|
|
|
537 |
_fmemmove(db.cursor->payload + off + 1, db.cursor->payload + off, db.cursor->len - off + 1);
|
|
|
538 |
db.cursor->len += 1;
|
|
|
539 |
uidirtyfrom = cursorposy;
|
|
|
540 |
uidirtyto = cursorposy;
|
|
|
541 |
db.cursor->payload[off] = k;
|
|
|
542 |
cursor_right(&db, &cursorposx, &cursorposy, screenw, screenh, &uidirtyfrom, &uidirtyto);
|
|
|
543 |
}
|
|
|
544 |
|
1309 |
mateusz.vi |
545 |
} else if (k == 0x13b) { /* F1 */
|
|
|
546 |
ui_help(screenw);
|
|
|
547 |
uidirtyfrom = 0;
|
|
|
548 |
uidirtyto = 0xff;
|
|
|
549 |
|
1311 |
mateusz.vi |
550 |
} else if (k == 0x13f) { /* F5 */
|
1312 |
mateusz.vi |
551 |
const char *m[] = {"SAVED", "SAVING FILE FAILED"};
|
|
|
552 |
int i;
|
|
|
553 |
i = !!savefile(&db, fname);
|
|
|
554 |
ui_msg(m[i], screenw, screenh, &uidirtyfrom, &uidirtyto);
|
|
|
555 |
mdr_bios_tickswait(11); /* 11 ticks is about 600 ms */
|
1311 |
mateusz.vi |
556 |
|
1282 |
mateusz.vi |
557 |
} else { /* UNHANDLED KEY - TODO IGNORE THIS IN PRODUCTION RELEASE */
|
|
|
558 |
char buff[4];
|
|
|
559 |
const char *HEX = "0123456789ABCDEF";
|
|
|
560 |
buff[0] = HEX[(k >> 8) & 15];
|
|
|
561 |
buff[1] = HEX[(k >> 4) & 15];
|
|
|
562 |
buff[2] = HEX[k & 15];
|
|
|
563 |
mdr_cout_str(screenh - 1, 0, "UNHANDLED KEY: 0x", scheme[COL_STATUSBAR1], 17);
|
|
|
564 |
mdr_cout_str(screenh - 1, 17, buff, scheme[COL_STATUSBAR1], 3);
|
1275 |
mateusz.vi |
565 |
keyb_getkey();
|
|
|
566 |
break;
|
|
|
567 |
}
|
|
|
568 |
}
|
|
|
569 |
|
|
|
570 |
mdr_cout_close();
|
|
|
571 |
|
|
|
572 |
/* TODO free memory */
|
|
|
573 |
|
|
|
574 |
return(0);
|
|
|
575 |
}
|