Initial revision

From-SVN: r22299

1 files changed, 50 insertions, 0 deletions

diff --git a/gcc/java/buffer.c b/gcc/java/buffer.c
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index 0000000..cea7899
--- /dev/null
+++ b/gcc/java/buffer.c
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+/* A "buffer" utility type.
+   Copyright (C) 1998 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* Written by Per Bothner <bothner@cygnus.com>, July 1998. */
+
+#include "gansidecl.h"
+#include "buffer.h"
+
+/* Grow BUFP so there is room for at least SIZE more bytes. */
+
+void
+buffer_grow (bufp, size)
+     struct buffer *bufp;
+     int size;
+{
+  if (bufp->limit - bufp->ptr >= size)
+    return;
+  if (bufp->data == 0)
+    {
+      if (size < 120)
+	size = 120;
+      bufp->data = (unsigned char*) xmalloc (size);
+      bufp->ptr = bufp->data;
+    }
+  else
+    {
+      int index = bufp->ptr - bufp->data;
+      size += 2 * (bufp->limit - bufp->data);
+      bufp->data = (unsigned char *) xrealloc (bufp->data, size);
+      bufp->ptr = bufp->data + index;
+    }
+  bufp->limit = bufp->data + size;
+}