--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/lib/istream-data.c	Fri Dec 06 03:09:22 2002 +0200
@@ -0,0 +1,85 @@
+/*
+   istream-data.c : Input stream interface for reading from data buffer
+
+    Copyright (c) 2002 Timo Sirainen
+
+    Permission is hereby granted, free of charge, to any person obtaining
+    a copy of this software and associated documentation files (the
+    "Software"), to deal in the Software without restriction, including
+    without limitation the rights to use, copy, modify, merge, publish,
+    distribute, sublicense, and/or sell copies of the Software, and to
+    permit persons to whom the Software is furnished to do so, subject to
+    the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+    IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+    CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+    TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+    SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include "lib.h"
+#include "istream-internal.h"
+
+static void _close(_IOStream *stream __attr_unused__)
+{
+}
+
+static void _destroy(_IOStream *stream __attr_unused__)
+{
+}
+
+static void _set_max_buffer_size(_IOStream *stream __attr_unused__,
+				 size_t max_size __attr_unused__)
+{
+}
+
+static void _set_blocking(_IOStream *stream __attr_unused__,
+			  int timeout_msecs __attr_unused__,
+			  void (*timeout_func)(void *) __attr_unused__,
+			  void *context __attr_unused__)
+{
+}
+
+static ssize_t _read(_IStream *stream)
+{
+	return stream->pos - stream->skip;
+}
+
+static void _seek(_IStream *stream, uoff_t v_offset)
+{
+	stream->skip = v_offset;
+	stream->istream.v_offset = v_offset;
+}
+
+static void _skip(_IStream *stream, uoff_t count)
+{
+	stream->skip += count;
+	stream->istream.v_offset += count;
+}
+
+IStream *i_stream_create_from_data(Pool pool, const unsigned char *data,
+				   size_t size)
+{
+	_IStream *stream;
+
+	stream = p_new(pool, _IStream, 1);
+	stream->buffer = data;
+	stream->pos = size;
+
+	stream->iostream.close = _close;
+	stream->iostream.destroy = _destroy;
+	stream->iostream.set_max_buffer_size = _set_max_buffer_size;
+	stream->iostream.set_blocking = _set_blocking;
+
+	stream->read = _read;
+	stream->skip_count = _skip;
+	stream->seek = _seek;
+
+	return _i_stream_create(stream, pool, -1, 0, size);
+}