NetBSD/lib/libterm/tputs.c

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/* $NetBSD: tputs.c,v 1.21 2003/08/07 16:44:57 agc Exp $ */
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/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
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*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
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#include <sys/cdefs.h>
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#ifndef lint
#if 0
static char sccsid[] = "@(#)tputs.c 8.1 (Berkeley) 6/4/93";
#else
__RCSID("$NetBSD: tputs.c,v 1.21 2003/08/07 16:44:57 agc Exp $");
#endif
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#endif /* not lint */
#include <assert.h>
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#include <ctype.h>
#include <termcap.h>
#include <stdio.h>
#include <stdlib.h>
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#undef ospeed
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/* internal functions */
int _tputs_convert __P((const char **, int));
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/*
* The following array gives the number of tens of milliseconds per
* character for each speed as returned by gtty. Thus since 300
* baud returns a 7, there are 33.3 milliseconds per char at 300 baud.
*/
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static const
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short tmspc10[] = {
0, 2000, 1333, 909, 743, 666, 500, 333, 166, 83, 55, 41, 20, 10, 5
};
short ospeed;
char PC;
int
_tputs_convert(ptr, affcnt)
const char **ptr;
int affcnt;
{
int i = 0;
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_DIAGASSERT(ptr != NULL);
_DIAGASSERT(*ptr != NULL);
/*
* Convert the number representing the delay.
*/
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if (isdigit(*(const unsigned char *)(*ptr))) {
do
i = i * 10 + *(*ptr)++ - '0';
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while (isdigit(*(const unsigned char *)(*ptr)));
}
i *= 10;
if (*(*ptr) == '.') {
(*ptr)++;
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if (isdigit(*(const unsigned char *)(*ptr)))
i += *(*ptr) - '0';
/*
* Only one digit to the right of the decimal point.
*/
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while (isdigit(*(const unsigned char *)(*ptr)))
(*ptr)++;
}
/*
* If the delay is followed by a `*', then
* multiply by the affected lines count.
*/
if (*(*ptr) == '*')
(*ptr)++, i *= affcnt;
return i;
}
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/*
* Put the character string cp out, with padding.
* The number of affected lines is affcnt, and the routine
* used to output one character is outc.
*/
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void
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tputs(cp, affcnt, outc)
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const char *cp;
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int affcnt;
int (*outc) __P((int));
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{
int i = 0;
int mspc10;
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_DIAGASSERT(outc != 0);
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if (cp == 0)
return;
/* scan and convert delay digits (if any) */
i = _tputs_convert(&cp, affcnt);
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/*
* The guts of the string.
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*/
while (*cp)
(void)(*outc)(*cp++);
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/*
* If no delay needed, or output speed is
* not comprehensible, then don't try to delay.
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*/
if (i == 0)
return;
if (ospeed <= 0 ||
(size_t) ospeed >= (sizeof tmspc10 / sizeof tmspc10[0]))
return;
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/*
* Round up by a half a character frame,
* and then do the delay.
* Too bad there are no user program accessible programmed delays.
* Transmitting pad characters slows many
* terminals down and also loads the system.
*/
mspc10 = tmspc10[ospeed];
i += mspc10 / 2;
for (i /= mspc10; i > 0; i--)
(void)(*outc)(PC);
}
int
t_puts(info, cp, affcnt, outc, args)
struct tinfo *info;
const char *cp;
int affcnt;
void (*outc) __P((char, void *));
void *args;
{
int i = 0;
size_t limit;
int mspc10;
char pad[2], *pptr;
char *pc;
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/* XXX: info may be NULL ? */
/* cp is handled below */
_DIAGASSERT(outc != NULL);
_DIAGASSERT(args != NULL);
if (info != NULL) {
/*
* if we have info then get the pad char from the
* termcap entry if it exists, otherwise use the
* default NUL char.
*/
pptr = pad;
limit = sizeof(pad);
pc = t_getstr(info, "pc", &pptr, &limit);
if (pc == NULL)
pad[0] = '\0';
else
free(pc);
}
if (cp == 0)
return -1;
/* scan and convert delay digits (if any) */
i = _tputs_convert(&cp, affcnt);
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/*
* The guts of the string.
*/
while (*cp)
(*outc)(*cp++, args);
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/*
* If no delay needed, or output speed is
* not comprehensible, then don't try to delay.
*/
if (i == 0)
return 0;
if (ospeed <= 0 ||
(size_t) ospeed >= (sizeof tmspc10 / sizeof tmspc10[0]))
return 0;
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/*
* Round up by a half a character frame,
* and then do the delay.
* Too bad there are no user program accessible programmed delays.
* Transmitting pad characters slows many
* terminals down and also loads the system.
*/
mspc10 = tmspc10[ospeed];
i += mspc10 / 2;
for (i /= mspc10; i > 0; i--)
(*outc)(pad[0], args);
return 0;
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}