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Print control codes only in graphic mode

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Non handled codes must be ignored, except in graphic mode. Also STR
sequences have higher priority than control codes, so they must be handled
before of them.
---
 st.c |  160 ++++++++++++++++++++++++++++++++++++------------------------------
 1 file changed, 87 insertions(+), 73 deletions(-)
This commit is contained in:
Roberto E. Vargas Caballero 2012-10-06 19:15:30 +02:00
parent 034dc71fb8
commit 2bd0c23fa7
1 changed files with 87 additions and 73 deletions
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86
st.c
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@ -1784,10 +1784,38 @@ tputtab(bool forward) {
void
tputc(char *c, int len) {
uchar ascii = *c;
bool control = ascii < '\x20' || ascii == 0177;
if(iofd != -1)
write(iofd, c, len);
/*
* STR sequences must be checked before of anything
* because it can use some control codes as part of the sequence
*/
if(term.esc & ESC_STR) {
switch(ascii) {
case '\033':
term.esc = ESC_START | ESC_STR_END;
break;
case '\a': /* backwards compatibility to xterm */
term.esc = 0;
strhandle();
break;
default:
strescseq.buf[strescseq.len++] = ascii;
if(strescseq.len+1 >= STR_BUF_SIZ) {
term.esc = 0;
strhandle();
}
}
return;
}
/*
* Actions of control codes must be performed as soon they arrive
* because they can be embedded inside a control sequence, and
* they must not cause conflicts with sequences.
*/
if(control) {
switch(ascii) {
case '\t': /* HT */
tputtab(1);
@ -1805,8 +1833,6 @@ tputc(char *c, int len) {
tnewline(IS_SET(MODE_CRLF));
return;
case '\a': /* BEL */
if(term.esc & ESC_STR)
break;
if(!(xw.state & WIN_FOCUSED))
xseturgency(1);
return;
@ -1816,7 +1842,7 @@ tputc(char *c, int len) {
return;
case '\016': /* SO */
term.c.attr.mode |= ATTR_GFX;
break;
return;
case '\017': /* SI */
term.c.attr.mode &= ~ATTR_GFX;
return;
@ -1824,16 +1850,14 @@ tputc(char *c, int len) {
case '\030': /* CAN */
csireset();
return;
default:
/* case '\005': ENQ (IGNORED) */
/* case '\000': NUL (IGNORED) */
/* case '\021': XON (IGNORED) */
/* case '\023': XOFF (IGNORED) */
/* case 0177: DEL (IGNORED) */
break;
case '\005': /* ENQ (IGNORED) */
case '\000': /* NUL (IGNORED) */
case '\021': /* XON (IGNORED) */
case '\023': /* XOFF (IGNORED) */
case 0177: /* DEL (IGNORED) */
return;
}
if(term.esc & ESC_START) {
} else if(term.esc & ESC_START) {
if(term.esc & ESC_CSI) {
csiescseq.buf[csiescseq.len++] = ascii;
if(BETWEEN(ascii, 0x40, 0x7E)
@ -1841,22 +1865,6 @@ tputc(char *c, int len) {
term.esc = 0;
csiparse(), csihandle();
}
} else if(term.esc & ESC_STR) {
switch(ascii) {
case '\033':
term.esc = ESC_START | ESC_STR_END;
break;
case '\a': /* backwards compatibility to xterm */
term.esc = 0;
strhandle();
break;
default:
strescseq.buf[strescseq.len++] = ascii;
if(strescseq.len+1 >= STR_BUF_SIZ) {
term.esc = 0;
strhandle();
}
}
} else if(term.esc & ESC_STR_END) {
term.esc = 0;
if(ascii == '\\')
@ -1955,20 +1963,26 @@ tputc(char *c, int len) {
term.esc = 0;
}
}
} else {
/*
* All characters which forms part of a sequence are not
* printed
*/
return;
}
/*
* Display control codes only if we are in graphic mode
*/
if(control && !(term.c.attr.mode & ATTR_GFX))
return;
if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
sel.bx = -1;
if(ascii >= '\020' || term.c.attr.mode & ATTR_GFX) {
if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
tnewline(1); /* always go to first col */
tsetchar(c);
if(term.c.x+1 < term.col) {
if(term.c.x+1 < term.col)
tmoveto(term.c.x+1, term.c.y);
} else {
else
term.c.state |= CURSOR_WRAPNEXT;
}
}
}
}
int