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%%	options

copyright owner	=	Dirk Krause
copyright year	=	2015-xxxx
license		=	bsd



%%	header

/**	@file	dk4membf.h	Save buffer data to file.
*/

#ifndef STDIO_H_INCLUDED
#include <stdio.h>
#define	STDIO_H_INCLUDED 1
#endif

#include "dk4membuf.h"

#ifdef __cplusplus
extern "C" {
#endif

/**	Save buffer contents to file.
	@param	fipo	Output file.
	@param	mbptr	Buffer containing data to write.
	@param	erp	Error report, may be NULL.
	@return	1 on success, 0 on error.
*/
int
dk4membuf_to_file(FILE *fipo, dk4_membuf_t *mbptr, dk4_er_t *erp);

#ifdef __cplusplus
}
#endif



%%	module

#include "dk4membf.h"

#if DK4_HAVE_ERRNO_H
#ifndef ERRNO_H_INCLUDED
#include <errno.h>
#define	ERRNO_H_INCLUDED 1
#endif
#endif


int
dk4membuf_to_file(FILE *fipo, dk4_membuf_t *mbptr, dk4_er_t *erp)
{
  dk4_membuf_cell_t	*pc	= NULL;
  dk4_membuf_cell_t	*pn	= NULL;
  size_t		 wrb	= 0;
  int			 back	= 0;

  if ((NULL != fipo) && (NULL != mbptr)) {
    back = 1;
    pc = mbptr->first;
    while (NULL != pc) {
      pn = pc->next;
      if (0 < pc->used) {
        errno = 0;
        wrb = fwrite(pc->buf, 1, pc->used, fipo);
	if (wrb != pc->used) {
	  back = 0;
	  dk4error_set_idetails(erp, DK4_E_WRITE_FAILED, errno);
	}
      }
      pc = pn;
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}