/*  buf.h  Buffer manipulation routines.  Copyright (c) 2000 Dug Song <dugsong@monkey.org>  $Id: buf.h,v 1.5 2000/11/28 07:45:07 dugsong Exp $*/#ifndef BUF_H#define BUF_Htypedef struct buf {	u_char	*base;	int	 size;	int	 offset;	int	 end;} *buf_t;/* Initialize buffer. */void	buf_init(buf_t buf, u_char *data, int len);/* Allocate buffer. */buf_t	buf_new(int size);/* Free buffer. */void	buf_free(buf_t buf);/* Return pointer to buffer data. */#define buf_ptr(b)	((b)->base + (b)->offset)/* Return length of buffer data. */#define buf_len(b)	((b)->end - (b)->offset)/* Return remaining length of unused buffer. */#define buf_left(b)	((b)->size - (b)->offset)/* Return size of buffer. */#define buf_size(b)	((b)->size)/* Return offset in buffer. */#define buf_tell(b)	((b)->offset)/* Reposition buffer offset. */int	buf_seek(buf_t buf, int offset, int whence);#define buf_skip(b, l)	buf_seek(b, l, SEEK_CUR)#define buf_rewind(b)	buf_seek(b, 0, SEEK_SET)/* Read from buffer. */int	buf_get(buf_t buf, void *dst, int len);/* Write to buffer. */int	buf_put(buf_t buf, void *src, int len);int	buf_putf(buf_t buf, const char *fmt, ...);/* Finalize buffer. */void	buf_end(buf_t buf);/* Locate byte string in buffer. */int	buf_index(buf_t buf, void *ptr, int len);int	buf_rindex(buf_t buf, void *ptr, int len);/* Compare buffer to byte string. */int	buf_cmp(buf_t buf, void *ptr, int len);/* Tokenize buffer, like strtok(3). */buf_t	buf_tok(buf_t buf, void *sep, int len);/* Get a sub-buffer from buffer. */buf_t	buf_getbuf(buf_t buf, int offset, int len);/* Get a word from buffer. */buf_t	buf_getword(buf_t buf, void *sep, int len);/* Convert buffer to allocated string. */char *	buf_strdup(buf_t buf);/* ASCII string test. */int	buf_isascii(buf_t buf);#endif /* BUF_H */