/*
 * Copyright 1998-2002 Ben Smithurst <ben@smithurst.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * $BCPS: src/mailutils/misc.h,v 1.50 2003/01/19 19:18:25 ben Exp $
 */

#include <sys/param.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/time.h>
#include <sys/file.h>

#include <assert.h>
#include <ctype.h>
#include <dirent.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <paths.h>
#include <pwd.h>
#include <regex.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>

#define VERSION "1.0"

#define	LF_GET	1
#define	LF_REL	2
#define	LF_GET_SOFT	4

typedef struct _tree {
	char *file;
	struct _tree *left;
	struct _tree *right;
} TREE;

typedef struct {
	FILE *fp;
	char *buf;
	size_t size;
	int eof;
} gl_getline_t;

FILE *open_mailbox(char *, char **, int *);
char *gl_getline(FILE *);
char *homedir(void);
char *inbox_check(char *);
char *mailpath(void);
char *user_inbox(void);
int is_from(char *, int);
int is_maildir(const char *);
int mailbox_size(const char *, int *);
int mailboxlock(char *, int, int, int);
int process(char **, int (*)(FILE *, FILE *), int (*)(int, char *, FILE *));
unsigned int str_to_int(char *);
void add_to_tree(TREE **, char *);
void array_to_tree(TREE **, char **);
void check_tree(TREE *, void (*)(char *));
void files_to_tree(TREE **, const char *);
void free_tree(TREE *);
void gl_destroy(FILE *);
char *print_mailbox(const char *);
void signal_handler(int);
void xerr(int, char *, ...);
void xerrx(int, char *, ...);
void xfprintf(FILE *, char *, ...);

/* Return values for functions called by process() */
#define	RET_ERROR	0 /* Error as specified by `errno' */
#define	RET_CHANGE	1 /* The file was changed, replace it with temp */
#define	RET_NOCHANGE	2 /* No change, just delete temp */
#define	RET_LOCALERROR	3 /*
			   * An error where `errno' is meaningless:
			   * don't print anything, the called function is
			   * assumed to have done so.
			   */
#define RET_DELETE	4 /* delete the file (maildir only) */

#define MALLOC(d, s) {				\
	if ((d = malloc(s)) == NULL)		\
		err(1, "malloc");		\
}

#define assertnl(line, len) do {		\
	assert(len > 0 && line[len-1] == '\n');	\
	len--;					\
} while (0)

#define chop(line, len) do {	\
	assertnl(line, len);	\
	line[len] = '\0';	\
} while (0)

extern int quiet;
extern char *curfile;
extern volatile sig_atomic_t sig_count;