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/*
 * Copyright (C) 1996-2000 Michael R. Elkins <me@mutt.org>
 *
 *     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 2 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, write to the Free Software
 *     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

/* flags to _mutt_copy_message */
#define MUTT_CM_NOHEADER        1       /* don't copy the message header */
#define MUTT_CM_PREFIX          (1<<1)  /* quote the message */
#define MUTT_CM_DECODE          (1<<2)  /* decode the message body into text/plain */
#define MUTT_CM_DISPLAY         (1<<3)  /* output is displayed to the user */
#define MUTT_CM_UPDATE          (1<<4)  /* update structs on sync */
#define MUTT_CM_WEED            (1<<5)  /* weed message/rfc822 attachment headers */
#define MUTT_CM_CHARCONV        (1<<6)  /* perform character set conversions */
#define MUTT_CM_PRINTING        (1<<7)  /* printing the message - display light */
#define MUTT_CM_REPLYING        (1<<8)  /* replying the message */

#define MUTT_CM_DECODE_PGP      (1<<9)  /* used for decoding PGP messages */
#define MUTT_CM_DECODE_SMIME    (1<<10) /* used for decoding S/MIME messages */
#define MUTT_CM_DECODE_CRYPT    (MUTT_CM_DECODE_PGP | MUTT_CM_DECODE_SMIME)

#define MUTT_CM_VERIFY          (1<<11) /* do signature verification */

/* flags for mutt_copy_header() */
#define CH_UPDATE         1       /* update the status and x-status fields? */
#define CH_WEED           (1<<1)  /* weed the headers? */
#define CH_DECODE         (1<<2)  /* do RFC1522 decoding? */
#define CH_XMIT           (1<<3)  /* transmitting this message? */
#define CH_FROM           (1<<4)  /* retain the "From " message separator? */
#define CH_PREFIX         (1<<5)  /* use Prefix string? */
#define CH_NOSTATUS       (1<<6)  /* suppress the status and x-status fields */
#define CH_REORDER        (1<<7)  /* Re-order output of headers */
#define CH_NONEWLINE      (1<<8)  /* don't output terminating newline */
#define CH_MIME           (1<<9)  /* ignore MIME fields */
#define CH_UPDATE_LEN     (1<<10) /* update Lines: and Content-Length: */
#define CH_TXTPLAIN       (1<<11) /* generate text/plain MIME headers */
#define CH_NOLEN          (1<<12) /* don't write Content-Length: and Lines: */
#define CH_WEED_DELIVERED (1<<13) /* weed eventual Delivered-To headers */
#define CH_FORCE_FROM     (1<<14) /* give CH_FROM precedence over CH_WEED? */
#define CH_NOQFROM        (1<<15) /* ignore ">From " line */
#define CH_UPDATE_IRT     (1<<16) /* update In-Reply-To: */
#define CH_UPDATE_REFS    (1<<17) /* update References: */
#define CH_DISPLAY        (1<<18) /* display result to user */
#define CH_UPDATE_LABEL   (1<<19) /* update X-Label: from hdr->env->x_label? */
#define CH_UPDATE_SUBJECT (1<<20) /* update Subject: protected header update */


int mutt_copy_hdr (FILE *, FILE *, LOFF_T, LOFF_T, int, const char *);

int mutt_copy_header (FILE *, HEADER *, FILE *, int, const char *);

int _mutt_copy_message (FILE *fpout,
			FILE *fpin,
			HEADER *hdr,
			BODY *body,
			int flags,
			int chflags);

int mutt_copy_message (FILE *fpout,
		       CONTEXT *src,
		       HEADER *hdr,
		       int flags,
		       int chflags);

int _mutt_append_message (CONTEXT *dest,
			  FILE *fpin,
			  CONTEXT *src,
			  HEADER *hdr,
			  BODY *body,
			  int flags,
			  int chflags);

int mutt_append_message (CONTEXT *dest,
			 CONTEXT *src,
			 HEADER *hdr,
			 int cmflags,
			 int chflags);