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/* Copyright (C) 2020  C. McEnroe <june@causal.agency>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>

#include "archive.h"

int mboxFrom(FILE *file) {
	int n = fprintf(file, "From mboxrd@z Thu Jan  1 00:00:00 1970\n");
	return (n < 0 ? n : 0);
}

int mboxHeader(FILE *file, char *header) {
	for (char *crlf; (crlf = strstr(header, "\r\n")); header = &crlf[2]) {
		*crlf = '\0';
		int n = fprintf(file, "%s\n", header);
		if (n < 0) return n;
	}
	return 0;
}

int mboxBody(FILE *file, char *body) {
	int n;
	for (char *crlf; (crlf = strstr(body, "\r\n")); body = &crlf[2]) {
		*crlf = '\0';
		char *from = body;
		while (*from == '>') from++;
		if (!strncmp(from, "From ", 5)) {
			n = fprintf(file, ">%s\n", body);
		} else {
			n = fprintf(file, "%s\n", body);
		}
		if (n < 0) return n;
	}
	n = fprintf(file, "\n");
	return (n < 0 ? n : 0);
}