/*  $Id: wire.h 8788 2009-11-15 09:27:11Z iulius $
**
**  Wire format article utilities.
**
**  Originally written by Alex Kiernan (alex.kiernan@thus.net)
**
**  These routines manipulate wire format articles; in particular, they should
**  be safe in the presence of embedded NULs and UTF-8 characters.
*/

#ifndef INN_WIRE_H
#define INN_WIRE_H 1

#include <inn/defines.h>
#include <sys/types.h>          /* size_t */

BEGIN_DECLS

/* Given a pointer to the start of an article, locate the first octet
   of the body (which may be the octet beyond the end of the buffer if
   your article is bodyless). */
char *wire_findbody(const char *, size_t);

/* Given a pointer into an article and a pointer to the end of the article,
   find the start of the next line or return NULL if there are no more lines
   remaining in the article. */
char *wire_nextline(const char *, const char *end);

/* Given a pointer to the start of an article and the name of a header, find
   the beginning of the value of the given header (the returned pointer will
   be after the name of the header, and also any initial whitespace if specified
   by the stripspaces argument).  Headers whose only content is whitespace are
   ignored when whitespaces are stripped.  If the header isn't found, returns
   NULL. */
char *wire_findheader(const char *article, size_t, const char *header, bool stripspaces);

/* Given a pointer inside a header's value and a pointer to the end of the
   article, returns a pointer to the end of the header value (the \n at the
   end of the terminating \r\n with folding taken into account), or NULL if no
   such terminator was found before the end of the article. */
char *wire_endheader(const char *header, const char *end);

/* Given an article and length in non-wire format, return a malloced region
   containing the article in wire format and set newlen to the length of the
   new article. */ 
char *wire_from_native(const char *article, size_t len, size_t *newlen);

/* Given an article and length in wire format, return a malloced region
   containing the article in native format and set *newlen to the length of
   the new article. */
char *wire_to_native(const char *article, size_t len, size_t *newlen);

END_DECLS

#endif /* INN_WIRE_H */
