/* encode_rfc2047.h -- encode message headers using RFC 2047 encoding.
 *
 * This code is Copyright (c) 2017, by the authors of nmh.  See the
 * COPYRIGHT file in the root directory of the nmh distribution for
 * complete copyright information. */

/*
 * Encode a message header using RFC 2047 encoding.  If the message contains
 * no non-ASCII characters, then leave the header as-is.
 *
 * Arguments include:
 *
 * name		- Message header name
 * value	- Message header content; must point to allocated memory
 *		  (may be changed if encoding is necessary)
 * encoding	- Encoding type.  May be one of CE_UNKNOWN (function chooses
 *		  the encoding), CE_BASE64 or CE_QUOTED
 * charset	- Charset used for encoding.  If NULL, obtain from system
 *		  locale.
 *
 * Returns 0 on success, any other value on failure.
 */

int encode_rfc2047(const char *, char **, int, const char *);