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path: root/mexport.c
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#include <sys/stat.h>
#include <sys/types.h>

#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "blaze822.h"

static int Sflag;

static int status;

void
export(char *file)
{
	struct message *msg;

	while (*file == ' ' || *file == '\t')
		file++;

	msg = blaze822(file);
	if (!msg)
		return;

	char from[1024] = "nobody";

        char *v;
        if ((v = blaze822_hdr(msg, "return-path")) ||
	    (v = blaze822_hdr(msg, "x-envelope-from"))) {
		char *s = strchr(v, '<');
		char *e = strchr(s, '>');
		if (s && e) {
			e++;
			memcpy(from, s, e-s);
			from[e-s] = 0;
		}
        }

	time_t date = -1;
        if ((v = blaze822_hdr(msg, "date"))) {
		date = blaze822_date(v);
	}

	char *line = 0;
	size_t linelen = 0;

	FILE *infile = fopen(file, "r");
	if (!infile) {
		status = 1;
		return;
	}
	
	printf("From %s %s", from, ctime(&date));

	int in_header = 1;
	int final_nl = 0;

	while (1) {
		errno = 0;
		ssize_t rd = getline(&line, &linelen, infile);
		if (rd == -1) {
			if (errno == 0)
				break;
			// XXX print error?
			status = 1;
			return;
		}
		
		if (in_header && line[0] == '\n' && !line[1]) {
			if (Sflag) {
				char *flags = strstr(file, ":2,");
				if (!flags)
					flags = "";

				fputs("Status: ", stdout);
				if (strchr(flags, 'S'))
					putchar('R');
				char *ee = strrchr(file, '/');
				if (!ee || 
				    !(ee >= file + 3 && ee[-3] == 'n' && ee[-2] == 'e' && ee[-1] == 'w'))
					putchar('O');
				putchar('\n');
					
				fputs("X-Status: ", stdout);
				if (strchr(flags, 'R')) putchar('A');
				if (strchr(flags, 'T')) putchar('D');
				if (strchr(flags, 'F')) putchar('F');
				putchar('\n');
			}
				
			in_header = 0;
		}
			
		// MBOXRD: add first > to >>..>>From
		char *s = line;
		while (*s == '>')
			s++;
		if (strncmp("From ", s, 5) == 0)
			putchar('>');

		fputs(line, stdout);
		final_nl = (line[rd-1] == '\n');
	}

	// ensure trailing newline
	if (!final_nl)
		putchar('\n');

	fclose(infile);

	blaze822_free(msg);
}

int
main(int argc, char *argv[])
{
	int c;
	while ((c = getopt(argc, argv, "S")) != -1)
		switch(c) {
		case 'S': Sflag = 1; break;
		default:
			fprintf(stderr, "Usage: mexport [-S] [msgs...]\n");
			exit(2);
		}

	status = 0;

	if (argc == optind && isatty(0))
		blaze822_loop1(":", export);
	else
		blaze822_loop(argc-optind, argv+optind, export);
	
	return status;
}