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/*
* $Id: printbuf.c,v 1.5 2006/01/26 02:16:28 mclark Exp $
*
* Copyright (c) 2004, 2005 Metaparadigm Pte. Ltd.
* Michael Clark <michael@metaparadigm.com>
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the MIT license. See COPYING for details.
*
*
* Copyright (c) 2008-2009 Yahoo! Inc. All rights reserved.
* The copyrights to the contents of this file are licensed under the MIT License
* (http://www.opensource.org/licenses/mit-license.php)
*/
#include "config.h"
#if defined(__GNUC__) && !defined(_GNU_SOURCE)
#define _GNU_SOURCE 1 /* seems to be required to bring in vasprintf */
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "cpl_string.h"
#if HAVE_STDARG_H
# include <stdarg.h>
#else /* !HAVE_STDARG_H */
# error Not enough var arg support!
#endif /* HAVE_STDARG_H */
#include "bits.h"
#include "debug.h"
#include "printbuf.h"
struct printbuf* printbuf_new(void)
{
struct printbuf *p;
p = (struct printbuf*)calloc(1, sizeof(struct printbuf));
if(!p) return NULL;
p->size = 32;
p->bpos = 0;
if((p->buf = (char*)malloc(p->size)) == NULL) {
free(p);
return NULL;
}
return p;
}
int printbuf_memappend(struct printbuf *p, const char *buf, int size)
{
char *t;
if(p->size - p->bpos <= size) {
int new_size = json_max(p->size * 2, p->bpos + size + 8);
#ifdef PRINTBUF_DEBUG
MC_DEBUG("printbuf_memappend: realloc "
"bpos=%d wrsize=%d old_size=%d new_size=%d\n",
p->bpos, size, p->size, new_size);
#endif /* PRINTBUF_DEBUG */
if((t = (char*)realloc(p->buf, new_size)) == NULL) return -1;
p->size = new_size;
p->buf = t;
}
memcpy(p->buf + p->bpos, buf, size);
p->bpos += size;
p->buf[p->bpos]= '\0';
return size;
}
/* Use CPLVASPrintf for portability issues */
int sprintbuf(struct printbuf *p, const char *msg, ...)
{
va_list ap;
char *t;
int size, ret;
/* user stack buffer first */
va_start(ap, msg);
if((size = CPLVASPrintf(&t, msg, ap)) == -1) return -1;
va_end(ap);
if (strcmp(msg, "%f") == 0)
{
char* pszComma = strchr(t, ',');
if (pszComma)
*pszComma = '.';
}
ret = printbuf_memappend(p, t, size);
CPLFree(t);
return ret;
}
void printbuf_reset(struct printbuf *p)
{
p->buf[0] = '\0';
p->bpos = 0;
}
void printbuf_free(struct printbuf *p)
{
if(p) {
free(p->buf);
free(p);
}
}
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