haiku/headers/os/mail/mail_encoding.h

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#ifndef ZOIDBERG_MAIL_ENCODING_H
#define ZOIDBERG_MAIL_ENCODING_H
/* mail encoding - mail de-/encoding functions (base64 and friends)
**
** Copyright 2001 Dr. Zoidberg Enterprises. All rights reserved.
*/
#include <size_t.h>
#include <sys/types.h>
#define B_MAIL_NULL_CONVERSION ((uint32) -1)
#define B_MAIL_UTF8_CONVERSION ((uint32) -2)
// For specifying the UTF-8 character set when converting to/from UTF-8.
#define B_MAIL_US_ASCII_CONVERSION ((uint32) -3)
// Plain 7 bit ASCII character set. A subset of UTF-8, but some mail software
// specifies it so we need to recognize it.
#define BASE64_LINELENGTH 76
typedef enum {
base64 = 'b',
quoted_printable = 'q',
seven_bit = '7',
eight_bit = '8',
uuencode = 'u', // Invalid to encode something using uuencode.
null_encoding = 0, // For not changing existing settings.
no_encoding = -1
} mail_encoding;
#ifdef __cplusplus
extern "C" {
#endif
ssize_t encode(mail_encoding encoding, char *out, const char *in,
off_t length, int headerMode);
// boolean headerMode only matters for quoted_printable and base64.
ssize_t decode(mail_encoding encoding, char *out, const char *in, off_t length,
int underscore_is_space);
// the value of underscore_is_space only matters for quoted_printable.
ssize_t max_encoded_length(mail_encoding encoding, off_t cur_length);
mail_encoding encoding_for_cte(const char *content_transfer_encoding);
ssize_t encode_base64(char *out, const char *in, off_t length, int headerMode);
ssize_t decode_base64(char *out, const char *in, off_t length);
ssize_t encode_qp(char *out, const char *in, off_t length, int headerMode);
ssize_t decode_qp(char *out, const char *in, off_t length, int underscore_is_space);
//---underscore_is_space should be 1 if and only if you are decoding a header field
ssize_t uu_decode(char *out, const char *in, off_t length);
#ifdef __cplusplus
}
#endif
#endif /* ZOIDBERG_MAIL_ENCODING_H */