1 files changed, 144 insertions, 0 deletions
diff --git a/gdb/common/buffer.c b/gdb/common/buffer.c
new file mode 100644
index 00000000000..4ada0bc2d12
--- /dev/null
+++ b/gdb/common/buffer.c
@@ -0,0 +1,144 @@
+/* A simple growing buffer for GDB.
+  
+   Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program 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 3 of the License, or
+   (at your option) any later version.
+
+   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifdef GDBSERVER
+#include "server.h"
+#else
+#include "defs.h"
+#endif
+
+#include "xml-utils.h"
+#include "buffer.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+void
+buffer_grow (struct buffer *buffer, const char *data, size_t size)
+{
+  char *new_buffer;
+  size_t new_buffer_size;
+
+  if (size == 0)
+    return;
+
+  new_buffer_size = buffer->buffer_size;
+
+  if (new_buffer_size == 0)
+    new_buffer_size = 1;
+
+  while (buffer->used_size + size > new_buffer_size)
+    new_buffer_size *= 2;
+  new_buffer = xrealloc (buffer->buffer, new_buffer_size);
+  if (!new_buffer)
+    abort ();
+  memcpy (new_buffer + buffer->used_size, data, size);
+  buffer->buffer = new_buffer;
+  buffer->buffer_size = new_buffer_size;
+  buffer->used_size += size;
+}
+
+void
+buffer_free (struct buffer *buffer)
+{
+  if (!buffer)
+    return;
+
+  xfree (buffer->buffer);
+  buffer->buffer = NULL;
+  buffer->buffer_size = 0;
+  buffer->used_size = 0;
+}
+
+void
+buffer_init (struct buffer *buffer)
+{
+  memset (buffer, 0, sizeof (*buffer));
+}
+
+char*
+buffer_finish (struct buffer *buffer)
+{
+  char *ret = buffer->buffer;
+  buffer->buffer = NULL;
+  buffer->buffer_size = 0;
+  buffer->used_size = 0;
+  return ret;
+}
+
+void
+buffer_xml_printf (struct buffer *buffer, const char *format, ...)
+{
+  va_list ap;
+  const char *f;
+  const char *prev;
+  int percent = 0;
+
+  va_start (ap, format);
+
+  prev = format;
+  for (f = format; *f; f++)
+    {
+      if (percent)
+	{
+	  char buf[32];
+	  char *p;
+	  char *str = buf;
+	  
+	  switch (*f)
+	    {
+	    case 's':
+	      str = va_arg (ap, char *);
+	      break;
+	    case 'd':
+	      sprintf (str, "%d", va_arg (ap, int));
+	      break;
+	    case 'u':
+	      sprintf (str, "%u", va_arg (ap, unsigned int));
+	      break;
+	    case 'x':
+	      sprintf (str, "%x", va_arg (ap, unsigned int));
+	      break;
+	    case 'o':
+	      sprintf (str, "%o", va_arg (ap, unsigned int));
+	      break;
+	    default:
+	      str = 0;
+	      break;
+	    }
+	  
+	  if (str)
+	    {
+	      buffer_grow (buffer, prev, f - prev - 1);
+	      p = xml_escape_text (str);
+	      buffer_grow_str (buffer, p);
+	      xfree (p);
+	      prev = f + 1;
+	    }
+	  percent = 0;
+	}
+      else if (*f == '%')
+	percent = 1;
+    }
+
+  buffer_grow_str (buffer, prev);
+  va_end (ap);
+}
+