/*
 * This module contains code for creating (writing) secondary output files
 * intended for storing attached base64 blobs.
 */

#include <sys/file.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <unistd.h>
#include "defs.h"

extern char *att_filename_buf, *att_filename_tail;
extern void (*dec_outf)();

static unsigned att_count;
static FILE *att_outf;
static int giveup_flag;

static void
output_func(ch)
{
	putc(ch, att_outf);
}

init_attach_out()
{
	int fd;

	if (giveup_flag)
		return(-1);
	for (;;) {
		if (att_count >= 10000) {
			giveup_flag = 1;
			return(-1);
		}
		sprintf(att_filename_tail, "%04u", att_count++);
		fd = open(att_filename_buf, O_WRONLY|O_CREAT|O_EXCL, 0644);
		if (fd >= 0)
			break;
	}
	att_outf = fdopen(fd, "w");
	if (!att_outf) {
		perror("fdopen");
		close(fd);
		return(-1);
	}
	dec_outf = output_func;
	return(0);
}

void
attach_out_finish()
{
	fclose(att_outf);
}