mirror of
https://github.com/GnoConsortium/gno.git
synced 2024-06-20 07:29:28 +00:00
784e3de7cd
passwd, ps, purge, shutdown, stty, upper, and vi. These sources are for the versions of the utils shipped with GNO v2.0.4.
149 lines
3.3 KiB
C
149 lines
3.3 KiB
C
/*
|
|
* STEVIE - Simply Try this Editor for VI Enthusiasts
|
|
*
|
|
* Code Contributions By : Tim Thompson twitch!tjt
|
|
* Tony Andrews onecom!wldrdg!tony
|
|
* G. R. (Fred) Walter watmath!grwalter
|
|
*/
|
|
|
|
#include "stevie.h"
|
|
|
|
/*
|
|
* The following variable is set (in cursupdate) to the number of physical
|
|
* lines taken by the line the cursor is on. We use this to avoid extra calls
|
|
* to plines(). The optimized routine updateline() makes sure that the size of
|
|
* the cursor line hasn't changed. If so, lines below the cursor will move up
|
|
* or down and we need to call the routine s_refresh() to examine the
|
|
* entire screen.
|
|
*/
|
|
static int Cline_size; /* size (in rows) of the cursor line */
|
|
static int Cline_row; /* starting row of the cursor line */
|
|
|
|
/*
|
|
* updateline() - like s_refresh() but only for cursor line
|
|
*
|
|
* This determines whether or not we need to call s_refresh() to examine
|
|
* the entire screen for changes. This occurs if the size of the cursor line
|
|
* (in rows) has changed.
|
|
*/
|
|
static void
|
|
updateline(void)
|
|
{
|
|
char *ptr;
|
|
int col;
|
|
int size;
|
|
int j;
|
|
|
|
if (RedrawingDisabled) /* Is this the correct action ? */
|
|
return;
|
|
|
|
ptr = format_line(Curschar->linep->s, &col);
|
|
|
|
size = 1 + ((col - 1) / Columns);
|
|
if (Cline_size == size) {
|
|
s_cursor_off();
|
|
windgoto(Cline_row, 0);
|
|
if (P(P_NU)) {
|
|
/*
|
|
* This should be done more efficiently.
|
|
*/
|
|
outstr(mkline(cntllines(Filemem, Curschar)));
|
|
}
|
|
outstr(ptr);
|
|
|
|
j = col;
|
|
col %= Columns;
|
|
if ((col != 0) || (j == 0)) {
|
|
#ifdef T_END_L
|
|
windgoto(Cline_row + size - 1, col);
|
|
toutstr(T_END_L);
|
|
#else
|
|
for (; col < Columns; col++)
|
|
outchar(' ');
|
|
#endif
|
|
}
|
|
s_cursor_on();
|
|
} else {
|
|
s_refresh(VALID_TO_CURSCHAR);
|
|
}
|
|
}
|
|
|
|
void
|
|
cursupdate(int type)
|
|
{
|
|
register char c;
|
|
register int incr;
|
|
register int i;
|
|
register int didincr;
|
|
|
|
if (MustUpdateBotchar == TRUE)
|
|
Update_Botchar();
|
|
|
|
if (NumLineSizes < 0) {
|
|
s_refresh(NOT_VALID);
|
|
} else {
|
|
if (LineNotValid == TRUE)
|
|
updateline();
|
|
|
|
if (type != UPDATE_CURSOR) {
|
|
s_refresh(type);
|
|
} else if (ValidToCurschar == TRUE) {
|
|
s_refresh(VALID_TO_CURSCHAR);
|
|
} else if (CheckTopcharAndBotchar == TRUE) {
|
|
s_refresh(VALID);
|
|
}
|
|
}
|
|
|
|
CheckTopcharAndBotchar = FALSE;
|
|
MustUpdateBotchar = FALSE;
|
|
ValidToCurschar = FALSE;
|
|
LineNotValid = FALSE;
|
|
|
|
Cursrow = Curscol = Cursvcol = i = 0;
|
|
for (i = 0; i < NumLineSizes; i++) {
|
|
if (LinePointers[i] == Curschar->linep)
|
|
break;
|
|
Cursrow += LineSizes[i];
|
|
}
|
|
|
|
if (P(P_NU))
|
|
Curscol = 8;
|
|
|
|
Cline_row = Cursrow;
|
|
Cline_size = LineSizes[i];
|
|
|
|
for (i = 0; i <= Curschar->index; i++) {
|
|
c = Curschar->linep->s[i];
|
|
/* A tab gets expanded, depending on the current column */
|
|
if (c == TAB && !P(P_LS))
|
|
incr = P(P_TS) - (Cursvcol % P(P_TS));
|
|
else
|
|
incr = chars[c].ch_size;
|
|
Curscol += incr;
|
|
Cursvcol += incr;
|
|
if (Curscol >= Columns) {
|
|
Curscol -= Columns;
|
|
Cursrow++;
|
|
didincr = TRUE;
|
|
} else
|
|
didincr = FALSE;
|
|
}
|
|
if (didincr)
|
|
Cursrow--;
|
|
|
|
if (c == TAB && State == NORMAL && !P(P_LS)) {
|
|
Curscol--;
|
|
Cursvcol--;
|
|
} else {
|
|
Curscol -= incr;
|
|
Cursvcol -= incr;
|
|
}
|
|
if (Curscol < 0)
|
|
Curscol += Columns;
|
|
|
|
if (set_want_col) {
|
|
Curswant = Cursvcol;
|
|
set_want_col = FALSE;
|
|
}
|
|
}
|