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Print control codes only in graphic mode
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
parent
034dc71fb8
commit
2bd0c23fa7
1 changed files with 87 additions and 73 deletions
160
st.c
160
st.c
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@ -1784,56 +1784,80 @@ tputtab(bool forward) {
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void
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tputc(char *c, int len) {
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uchar ascii = *c;
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bool control = ascii < '\x20' || ascii == 0177;
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if(iofd != -1)
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write(iofd, c, len);
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switch(ascii) {
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case '\t': /* HT */
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tputtab(1);
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return;
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case '\b': /* BS */
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tmoveto(term.c.x-1, term.c.y);
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return;
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case '\r': /* CR */
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tmoveto(0, term.c.y);
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return;
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case '\f': /* LF */
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case '\v': /* VT */
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case '\n': /* LF */
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/* go to first col if the mode is set */
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tnewline(IS_SET(MODE_CRLF));
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return;
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case '\a': /* BEL */
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if(term.esc & ESC_STR)
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/*
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* STR sequences must be checked before of anything
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* because it can use some control codes as part of the sequence
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*/
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if(term.esc & ESC_STR) {
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switch(ascii) {
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case '\033':
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term.esc = ESC_START | ESC_STR_END;
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break;
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if(!(xw.state & WIN_FOCUSED))
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xseturgency(1);
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case '\a': /* backwards compatibility to xterm */
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term.esc = 0;
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strhandle();
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break;
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default:
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strescseq.buf[strescseq.len++] = ascii;
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if(strescseq.len+1 >= STR_BUF_SIZ) {
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term.esc = 0;
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strhandle();
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}
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}
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return;
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case '\033': /* ESC */
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csireset();
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term.esc = ESC_START;
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return;
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case '\016': /* SO */
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term.c.attr.mode |= ATTR_GFX;
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break;
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case '\017': /* SI */
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term.c.attr.mode &= ~ATTR_GFX;
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return;
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case '\032': /* SUB */
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case '\030': /* CAN */
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csireset();
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return;
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default:
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/* case '\005': ENQ (IGNORED) */
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/* case '\000': NUL (IGNORED) */
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/* case '\021': XON (IGNORED) */
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/* case '\023': XOFF (IGNORED) */
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/* case 0177: DEL (IGNORED) */
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break;
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}
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if(term.esc & ESC_START) {
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/*
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* Actions of control codes must be performed as soon they arrive
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* because they can be embedded inside a control sequence, and
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* they must not cause conflicts with sequences.
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*/
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if(control) {
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switch(ascii) {
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case '\t': /* HT */
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tputtab(1);
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return;
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case '\b': /* BS */
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tmoveto(term.c.x-1, term.c.y);
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return;
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case '\r': /* CR */
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tmoveto(0, term.c.y);
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return;
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case '\f': /* LF */
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case '\v': /* VT */
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case '\n': /* LF */
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/* go to first col if the mode is set */
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tnewline(IS_SET(MODE_CRLF));
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return;
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case '\a': /* BEL */
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if(!(xw.state & WIN_FOCUSED))
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xseturgency(1);
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return;
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case '\033': /* ESC */
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csireset();
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term.esc = ESC_START;
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return;
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case '\016': /* SO */
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term.c.attr.mode |= ATTR_GFX;
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return;
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case '\017': /* SI */
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term.c.attr.mode &= ~ATTR_GFX;
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return;
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case '\032': /* SUB */
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case '\030': /* CAN */
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csireset();
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return;
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case '\005': /* ENQ (IGNORED) */
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case '\000': /* NUL (IGNORED) */
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case '\021': /* XON (IGNORED) */
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case '\023': /* XOFF (IGNORED) */
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case 0177: /* DEL (IGNORED) */
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return;
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}
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} else if(term.esc & ESC_START) {
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if(term.esc & ESC_CSI) {
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csiescseq.buf[csiescseq.len++] = ascii;
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if(BETWEEN(ascii, 0x40, 0x7E)
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@ -1841,22 +1865,6 @@ tputc(char *c, int len) {
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term.esc = 0;
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csiparse(), csihandle();
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}
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} else if(term.esc & ESC_STR) {
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switch(ascii) {
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case '\033':
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term.esc = ESC_START | ESC_STR_END;
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break;
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case '\a': /* backwards compatibility to xterm */
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term.esc = 0;
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strhandle();
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break;
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default:
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strescseq.buf[strescseq.len++] = ascii;
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if(strescseq.len+1 >= STR_BUF_SIZ) {
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term.esc = 0;
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strhandle();
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}
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}
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} else if(term.esc & ESC_STR_END) {
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term.esc = 0;
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if(ascii == '\\')
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@ -1955,20 +1963,26 @@ tputc(char *c, int len) {
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term.esc = 0;
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}
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}
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} else {
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if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
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sel.bx = -1;
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if(ascii >= '\020' || term.c.attr.mode & ATTR_GFX) {
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if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
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tnewline(1); /* always go to first col */
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tsetchar(c);
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if(term.c.x+1 < term.col) {
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tmoveto(term.c.x+1, term.c.y);
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} else {
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term.c.state |= CURSOR_WRAPNEXT;
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}
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}
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/*
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* All characters which forms part of a sequence are not
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* printed
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*/
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return;
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}
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/*
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* Display control codes only if we are in graphic mode
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*/
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if(control && !(term.c.attr.mode & ATTR_GFX))
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return;
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if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
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sel.bx = -1;
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if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
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tnewline(1); /* always go to first col */
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tsetchar(c);
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if(term.c.x+1 < term.col)
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tmoveto(term.c.x+1, term.c.y);
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else
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term.c.state |= CURSOR_WRAPNEXT;
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}
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int
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