5183ddf2ed
Similarly to how STPUTC was changed, change struct output to store the pointer just past the end of the available space instead of the size of the available space, so after writing a character it is only necessary to increment a pointer and not to decrement a counter.
84 lines
3.2 KiB
C
84 lines
3.2 KiB
C
/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Kenneth Almquist.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 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
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)output.h 8.2 (Berkeley) 5/4/95
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* $FreeBSD$
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*/
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#ifndef OUTPUT_INCL
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#include <stdarg.h>
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#include <stddef.h>
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struct output {
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char *nextc;
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char *bufend;
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char *buf;
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int bufsize;
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short fd;
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short flags;
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};
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extern struct output output; /* to fd 1 */
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extern struct output errout; /* to fd 2 */
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extern struct output memout;
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extern struct output *out1; /* &memout if backquote, otherwise &output */
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extern struct output *out2; /* &memout if backquote with 2>&1, otherwise
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&errout */
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void outcslow(int, struct output *);
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void out1str(const char *);
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void out1qstr(const char *);
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void out2str(const char *);
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void out2qstr(const char *);
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void outstr(const char *, struct output *);
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void outqstr(const char *, struct output *);
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void outbin(const void *, size_t, struct output *);
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void emptyoutbuf(struct output *);
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void flushall(void);
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void flushout(struct output *);
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void freestdout(void);
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int outiserror(struct output *);
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void outclearerror(struct output *);
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void outfmt(struct output *, const char *, ...) __printflike(2, 3);
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void out1fmt(const char *, ...) __printflike(1, 2);
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void out2fmt_flush(const char *, ...) __printflike(1, 2);
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void fmtstr(char *, int, const char *, ...) __printflike(3, 4);
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void doformat(struct output *, const char *, va_list) __printflike(2, 0);
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int xwrite(int, const char *, int);
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#define outc(c, file) ((file)->nextc == (file)->bufend ? (emptyoutbuf(file), *(file)->nextc++ = (c)) : (*(file)->nextc++ = (c)))
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#define out1c(c) outc(c, out1);
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#define out2c(c) outcslow(c, out2);
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#define OUTPUT_INCL
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#endif
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