[src/trunk]: src/lib/libterm * Removed variable names from ansi style prototype

[blymn <blymn%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/61111b4767d4
branches:  trunk
changeset: 486373:61111b4767d4
user:      blymn <blymn%NetBSD.org@localhost>
date:      Sat May 20 13:55:10 2000 +0000

description:
* Removed variable names from ansi style prototype
* Add -I. to CPPFLAGS
* Added new function t_agetstr which dynamically allocates area buffer.

diffstat:

 lib/libterm/Makefile      |   4 +-
 lib/libterm/shlib_version |   4 +-
 lib/libterm/termcap.3     |  58 +++++++++++++++++++++++++++++++++++++++++++++-
 lib/libterm/termcap.c     |  51 +++++++++++++++++++++++++++++++++++++++-
 lib/libterm/termcap.h     |   5 ++-
 5 files changed, 112 insertions(+), 10 deletions(-)

diffs (195 lines):

diff -r 07f290cfa9d3 -r 61111b4767d4 lib/libterm/Makefile
--- a/lib/libterm/Makefile      Sat May 20 13:41:33 2000 +0000
+++ b/lib/libterm/Makefile      Sat May 20 13:55:10 2000 +0000
@@ -1,8 +1,8 @@
-#      $NetBSD: Makefile,v 1.21 1999/08/15 10:59:01 blymn Exp $
+#      $NetBSD: Makefile,v 1.22 2000/05/20 13:55:10 blymn Exp $
 #      @(#)Makefile    8.1 (Berkeley) 6/4/93
 
 LIB=   termcap
-CPPFLAGS+=-DCM_N -DCM_GT -DCM_B -DCM_D
+CPPFLAGS+=-I. -DCM_N -DCM_GT -DCM_B -DCM_D
 SRCS=  termcap.c tgoto.c tputs.c
 
 MAN=   termcap.3
diff -r 07f290cfa9d3 -r 61111b4767d4 lib/libterm/shlib_version
--- a/lib/libterm/shlib_version Sat May 20 13:41:33 2000 +0000
+++ b/lib/libterm/shlib_version Sat May 20 13:55:10 2000 +0000
@@ -1,5 +1,5 @@
-#      $NetBSD: shlib_version,v 1.5 2000/04/19 13:41:28 blymn Exp $
+#      $NetBSD: shlib_version,v 1.6 2000/05/20 13:55:10 blymn Exp $
 #      Remember to update distrib/sets/lists/base/shl.* when changing
 #
 major=0
-minor=2
+minor=3
diff -r 07f290cfa9d3 -r 61111b4767d4 lib/libterm/termcap.3
--- a/lib/libterm/termcap.3     Sat May 20 13:41:33 2000 +0000
+++ b/lib/libterm/termcap.3     Sat May 20 13:55:10 2000 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: termcap.3,v 1.18 2000/05/10 11:13:35 blymn Exp $
+.\"    $NetBSD: termcap.3,v 1.19 2000/05/20 13:55:10 blymn Exp $
 .\"
 .\" Copyright (c) 1980, 1991, 1993
 .\"    The Regents of the University of California.  All rights reserved.
@@ -73,6 +73,8 @@
 .Fn t_getflag "struct tinfo *info" "char *id"
 .Ft char *
 .Fn t_getstr "struct tinfo *info" "char *id" "char **area" "size_t *limit"
+.Ft char *
+.Fn t_agetstr "struct tinfo *info" "char *id" "char **buffer" "char **area"
 .Ft int
 .Fn t_getterm "struct tinfo *info" "char **area" "size_t *limit"
 .Ft int
@@ -293,7 +295,59 @@
 is no longer required any storage associated with the object can be
 released by calling
 .Fn t_freent .
-The functions 
+The function
+.Fn t_agetstr
+performs the same function as 
+.Fn t_getstr
+except sufficient memory is first allocated to hold the desired string
+argument before adding it to the buffer.  To initialise the buffer for 
+.Fn t_agetstr
+the first call must be done with the contents of
+.Fa buffer
+set to NULL.  Subsequent calls to 
+.Fn t_agetstr
+can pass
+.Fa buffer
+and
+.Fa area
+in unmodified and the requested string argument will be appended to
+the buffer after sufficient memory has been allocated.  Modifying either
+.Fa buffer
+or
+.Fa area
+between calls to 
+.Fn t_agetstr
+will certainly lead to the function misbehaving.  When the storage
+allocated by
+.Fn t_agetstr
+is no longer required it can be freed by passing the pointer contained
+in
+.Fa buffer
+to
+.Fn free .
+If an error occurs within
+.Fn t_agetstr
+a NULL will be returned and 
+.Fa buffer
+and
+.Fa area
+will remain unmodified.
+.Em NOTE
+.Fn t_agetstr
+uses
+.Fn realloc
+to reallocate the buffer memory so saving a copy of either 
+.Fa buffer
+or
+.Fa area
+for use after subsequent calls to 
+.Fn t_agetstr
+is likely to fail.  It is best to keep offsets from
+.Fa buffer
+to the desired string and calculate pointer addresses only after all
+the calls to
+.Fn t_agetstr
+have been done.  The functions 
 .Fn t_getnum
 and
 .Fn t_getflag
diff -r 07f290cfa9d3 -r 61111b4767d4 lib/libterm/termcap.c
--- a/lib/libterm/termcap.c     Sat May 20 13:41:33 2000 +0000
+++ b/lib/libterm/termcap.c     Sat May 20 13:55:10 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: termcap.c,v 1.29 2000/05/14 01:14:29 lukem Exp $       */
+/*     $NetBSD: termcap.c,v 1.30 2000/05/20 13:55:10 blymn Exp $       */
 
 /*
  * Copyright (c) 1980, 1993
@@ -38,7 +38,7 @@
 #if 0
 static char sccsid[] = "@(#)termcap.c  8.1 (Berkeley) 6/4/93";
 #else
-__RCSID("$NetBSD: termcap.c,v 1.29 2000/05/14 01:14:29 lukem Exp $");
+__RCSID("$NetBSD: termcap.c,v 1.30 2000/05/20 13:55:10 blymn Exp $");
 #endif
 #endif /* not lint */
 
@@ -376,6 +376,53 @@
 }
 
 /*
+ * Get a string valued option specified by id and append it to the
+ * given buffer.  If bufptr is NULL then a new buffer is allocated, if
+ * bufptr is non-NULL then extend the memory allocation to allow the
+ * new string to be appended to the buffer.  The pointer area is
+ * updated to point to the start of the new entry and this address is
+ * also returned to the caller.  If the string is not found or a
+ * memory allocation fails then NULL is returned and bufptr and area
+ * are unchanged.
+ */
+char *
+t_agetstr(struct tinfo *info, const char *id, char **bufptr, char **area)
+{
+       size_t new_size, offset;
+       char *new_buf;
+       
+       _DIAGASSERT(info != NULL);
+       _DIAGASSERT(id != NULL);
+       _DIAGASSERT(bufptr != NULL);
+       _DIAGASSERT(area != NULL);
+       _DIAGASSERT(size != NULL);
+
+       t_getstr(info, id, NULL, &new_size);
+
+         /* either the string is empty or the capability does not exist. */
+       if (new_size == 0)
+               return NULL;
+
+         /* check if we have a buffer, if not malloc one and fill it in. */
+       if (*bufptr == NULL) {
+               if ((new_buf = (char *) malloc(new_size)) == NULL)
+                       return NULL;
+               *bufptr = new_buf;
+               *area = new_buf;
+       } else {
+               offset = *area - *bufptr;
+               if ((new_buf = realloc(*bufptr, offset + new_size)) == NULL)
+                       return NULL;
+               
+               *bufptr = new_buf;
+               *area = *bufptr + offset; /* we need to do this just in case
+                                            realloc shifted the buffer. */
+       }
+       
+       return t_getstr(info, id, area, NULL);
+}
+ 
+/*
  * Free the buffer allocated by t_getent
  *
  */
diff -r 07f290cfa9d3 -r 61111b4767d4 lib/libterm/termcap.h
--- a/lib/libterm/termcap.h     Sat May 20 13:41:33 2000 +0000
+++ b/lib/libterm/termcap.h     Sat May 20 13:55:10 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: termcap.h,v 1.10 2000/04/19 13:41:29 blymn Exp $       */
+/*     $NetBSD: termcap.h,v 1.11 2000/05/20 13:55:11 blymn Exp $       */
 
 /*-
  * Copyright (c) 1992, 1993
@@ -60,7 +60,8 @@
 int   t_getnum  __P((struct tinfo *, const char *));
 int   t_getflag __P((struct tinfo *, const char *));
 char *t_getstr  __P((struct tinfo *, const char *, char **, size_t *));
-int   t_getterm(struct tinfo *info, char **area, size_t *limit);
+char *t_agetstr(struct tinfo *, const char *, char **, char **);
+int   t_getterm(struct tinfo *, char **, size_t *);
 int   t_goto    __P((struct tinfo *, const char *, int, int, char *, size_t));
 int   t_puts    __P((struct tinfo *, const char *, int,
                     void (*)(char, void *), void *));