Don't rely on availability of open_memstream

- configure now checks for availability of either of open_memstream
  and tmpfile.
- new module memstream uses either of these to create a portable
  memory stream

1 files changed, 35 insertions, 0 deletions

diff --git a/memstream.h b/memstream.h
new file mode 100644
index 0000000..eb06541
--- /dev/null
+++ b/memstream.h
@@ -0,0 +1,35 @@
+/*
+ * This file is part of ltrace.
+ * Copyright (C) 2012 Petr Machata, Red Hat Inc.
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#include <stdio.h>
+
+/* Portability wrapper for platforms that don't have
+ * open_memstream.  */
+
+struct memstream
+{
+	FILE *stream;
+	char *buf;
+	size_t size;
+};
+
+int memstream_init(struct memstream *memstream);
+int memstream_close(struct memstream *memstream);
+void memstream_destroy(struct memstream *memstream);