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Add minimal libsbuf implementation for Mac OS X.

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Jakub Klama 2016-01-31 01:50:35 +01:00
parent d3e4c06341
commit 830759c75e
2 changed files with 159 additions and 0 deletions
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106
sbuf/sbuf.c Normal file
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/*
* Copyright 2016 Jakub Klama <jceel@FreeBSD.org>
* All rights reserved
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted providing 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
*/
/*
* Minimal libsbuf reimplementation for Mac OS X.
*/
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include "sbuf.h"
#define SBUF_INITIAL_SIZE 128
struct sbuf *
sbuf_new_auto()
{
struct sbuf *s;
s = malloc(sizeof(struct sbuf));
s->s_buf = calloc(1, SBUF_INITIAL_SIZE + 1);
s->s_capacity = SBUF_INITIAL_SIZE;
s->s_size = 0;
return (s);
}
int
sbuf_printf(struct sbuf *s, const char *fmt, ...)
{
int ret;
va_list ap;
va_start(ap, fmt);
ret = sbuf_vprintf(s, fmt, ap);
va_end(ap);
return (ret);
}
int
sbuf_vprintf(struct sbuf *s, const char *fmt, va_list args)
{
va_list copy;
size_t req;
va_copy(copy, args);
req = vsnprintf(NULL, 0, fmt, copy);
va_end(copy);
if (s->s_size + req >= s->s_capacity) {
s->s_capacity = s->s_size + req + 1;
s->s_buf = realloc(s->s_buf, s->s_capacity);
}
req = vsnprintf(s->s_buf + s->s_size, req + 1, fmt, args);
s->s_size += req;
return (req);
}
char *
sbuf_data(struct sbuf *s)
{
return (s->s_buf);
}
int
sbuf_done(struct sbuf *s)
{
s->s_buf[s->s_size] = '\0';
return (0);
}
void
sbuf_delete(struct sbuf *s)
{
free(s->s_buf);
free(s);
}

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sbuf/sbuf.h Normal file
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/*
* Copyright 2016 Jakub Klama <jceel@FreeBSD.org>
* All rights reserved
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted providing 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
*/
/*
* Minimal libsbuf reimplementation for Mac OS X.
*/
#ifndef LIB9P_SBUF_H
#define LIB9P_SBUF_H
#include <stdarg.h>
struct sbuf
{
char *s_buf;
size_t s_size;
size_t s_capacity;
size_t s_position;
};
struct sbuf *sbuf_new_auto();
int sbuf_printf(struct sbuf *s, const char *fmt, ...);
int sbuf_vprintf(struct sbuf *s, const char *fmt, va_list args);
int sbuf_done(struct sbuf *s);
void sbuf_delete(struct sbuf *s);
char *sbuf_data(struct sbuf *s);
#endif /* LIB9P_SBUF_H */