===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/rcs/buf.c,v
retrieving revision 1.9
retrieving revision 1.10
diff -c -r1.9 -r1.10
*** src/usr.bin/rcs/buf.c	2007/02/02 04:24:09	1.9
--- src/usr.bin/rcs/buf.c	2007/02/02 04:34:49	1.10
***************
*** 1,4 ****
! /*	$OpenBSD: buf.c,v 1.9 2007/02/02 04:24:09 ray Exp $	*/
  /*
   * Copyright (c) 2003 Jean-Francois Brousseau <jfb@openbsd.org>
   * All rights reserved.
--- 1,4 ----
! /*	$OpenBSD: buf.c,v 1.10 2007/02/02 04:34:49 ray Exp $	*/
  /*
   * Copyright (c) 2003 Jean-Francois Brousseau <jfb@openbsd.org>
   * All rights reserved.
***************
*** 35,51 ****
  struct rcs_buf {
  	u_int	cb_flags;
  
! 	/* buffer handle and size */
  	u_char	*cb_buf;
  	size_t	 cb_size;
- 
- 	/* start and length of valid data in buffer */
- 	u_char	*cb_cur;
  	size_t	 cb_len;
  };
  
! #define SIZE_LEFT(b)	(b->cb_size - (size_t)(b->cb_cur - b->cb_buf) \
! 			    - b->cb_len)
  
  static void	rcs_buf_grow(BUF *, size_t);
  
--- 35,47 ----
  struct rcs_buf {
  	u_int	cb_flags;
  
! 	/* buffer handle, buffer size, and data length */
  	u_char	*cb_buf;
  	size_t	 cb_size;
  	size_t	 cb_len;
  };
  
! #define SIZE_LEFT(b)	(b->cb_size - b->cb_len)
  
  static void	rcs_buf_grow(BUF *, size_t);
  
***************
*** 70,76 ****
  
  	b->cb_flags = flags;
  	b->cb_size = len;
- 	b->cb_cur = b->cb_buf;
  	b->cb_len = 0;
  
  	return (b);
--- 66,71 ----
***************
*** 107,113 ****
  		goto out;
  	}
  	buf = rcs_buf_alloc(st.st_size, flags);
! 	for (bp = buf->cb_cur; ; bp += (size_t)ret) {
  		len = SIZE_LEFT(buf);
  		ret = read(fd, bp, len);
  		if (ret == -1) {
--- 102,108 ----
  		goto out;
  	}
  	buf = rcs_buf_alloc(st.st_size, flags);
! 	for (bp = buf->cb_buf; ; bp += (size_t)ret) {
  		len = SIZE_LEFT(buf);
  		ret = read(fd, bp, len);
  		if (ret == -1) {
***************
*** 185,191 ****
  rcs_buf_empty(BUF *b)
  {
  	memset(b->cb_buf, 0, b->cb_size);
- 	b->cb_cur = b->cb_buf;
  	b->cb_len = 0;
  }
  
--- 180,185 ----
***************
*** 199,205 ****
  {
  	u_char *bp;
  
! 	bp = b->cb_cur + b->cb_len;
  	if (bp == (b->cb_buf + b->cb_size)) {
  		/* extend */
  		if (b->cb_flags & BUF_AUTOEXT)
--- 193,199 ----
  {
  	u_char *bp;
  
! 	bp = b->cb_buf + b->cb_len;
  	if (bp == (b->cb_buf + b->cb_size)) {
  		/* extend */
  		if (b->cb_flags & BUF_AUTOEXT)
***************
*** 208,214 ****
  			errx(1, "rcs_buf_putc failed");
  
  		/* the buffer might have been moved */
! 		bp = b->cb_cur + b->cb_len;
  	}
  	*bp = (u_char)c;
  	b->cb_len++;
--- 202,208 ----
  			errx(1, "rcs_buf_putc failed");
  
  		/* the buffer might have been moved */
! 		bp = b->cb_buf + b->cb_len;
  	}
  	*bp = (u_char)c;
  	b->cb_len++;
***************
*** 223,229 ****
  u_char
  rcs_buf_getc(BUF *b, size_t pos)
  {
! 	return (b->cb_cur[pos]);
  }
  
  /*
--- 217,223 ----
  u_char
  rcs_buf_getc(BUF *b, size_t pos)
  {
! 	return (b->cb_buf[pos]);
  }
  
  /*
***************
*** 241,247 ****
  	size_t left, rlen;
  	u_char *bp, *bep;
  
! 	bp = b->cb_cur + b->cb_len;
  	bep = b->cb_buf + b->cb_size;
  	left = bep - bp;
  	rlen = len;
--- 235,241 ----
  	size_t left, rlen;
  	u_char *bp, *bep;
  
! 	bp = b->cb_buf + b->cb_len;
  	bep = b->cb_buf + b->cb_size;
  	left = bep - bp;
  	rlen = len;
***************
*** 249,255 ****
  	if (left < len) {
  		if (b->cb_flags & BUF_AUTOEXT) {
  			rcs_buf_grow(b, len - left);
! 			bp = b->cb_cur + b->cb_len;
  		} else
  			rlen = bep - bp;
  	}
--- 243,249 ----
  	if (left < len) {
  		if (b->cb_flags & BUF_AUTOEXT) {
  			rcs_buf_grow(b, len - left);
! 			bp = b->cb_buf + b->cb_len;
  		} else
  			rlen = bep - bp;
  	}
***************
*** 308,314 ****
  	ssize_t ret;
  
  	len = b->cb_len;
! 	bp = b->cb_cur;
  
  	do {
  		ret = write(fd, bp, len);
--- 302,308 ----
  	ssize_t ret;
  
  	len = b->cb_len;
! 	bp = b->cb_buf;
  
  	do {
  		ret = write(fd, bp, len);
***************
*** 391,403 ****
  rcs_buf_grow(BUF *b, size_t len)
  {
  	void *tmp;
- 	size_t diff;
  
- 	diff = b->cb_cur - b->cb_buf;
  	tmp = xrealloc(b->cb_buf, 1, b->cb_size + len);
  	b->cb_buf = tmp;
  	b->cb_size += len;
- 
- 	/* readjust pointers in case the buffer moved in memory */
- 	b->cb_cur = b->cb_buf + diff;
  }
--- 385,392 ----