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-rw-r--r--libmailutils/stream/stdio_stream.c85
1 files changed, 85 insertions, 0 deletions
diff --git a/libmailutils/stream/stdio_stream.c b/libmailutils/stream/stdio_stream.c
new file mode 100644
index 000000000..f9a5660c5
--- /dev/null
+++ b/libmailutils/stream/stdio_stream.c
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+/* GNU Mailutils -- a suite of utilities for electronic mail
+ Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+
+ This library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 3, or (at your option)
+ any later version.
+
+ This library 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 Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with GNU Mailutils. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#include <errno.h>
+#include <mailutils/types.h>
+#include <mailutils/stream.h>
+#include <mailutils/sys/stream.h>
+#include <mailutils/sys/file_stream.h>
+
+int
+mu_stdio_stream_create (mu_stream_t *pstream, int fd, int flags)
+{
+ int rc;
+ char *filename;
+ mu_stream_t transport;
+ int need_cache;
+ struct _mu_file_stream *fstr;
+
+ switch (fd)
+ {
+ case MU_STDIN_FD:
+ flags |= MU_STREAM_READ;
+ break;
+
+ case MU_STDOUT_FD:
+ case MU_STDERR_FD:
+ flags |= MU_STREAM_WRITE;
+ }
+
+ need_cache = flags & MU_STREAM_SEEK;
+ if (need_cache && (flags & MU_STREAM_WRITE))
+ /* Write caches are not supported */
+ return EINVAL;
+
+ if (flags & MU_STREAM_READ)
+ filename = "<stdin>";
+ else
+ filename = "<stdout>";
+
+ /* Create transport stream. */
+ rc = _mu_file_stream_create (&fstr, sizeof (*fstr),
+ filename, fd, flags & ~MU_STREAM_SEEK);
+ if (rc)
+ return rc;
+ fstr->stream.flags |= _MU_STR_OPEN;
+ fstr->stream.open = NULL;
+ transport = (mu_stream_t) fstr;
+ mu_stream_set_buffer (transport, mu_buffer_line, 0);
+
+ /* Wrap it in cache, if required */
+ if (need_cache)
+ {
+ mu_stream_t str;
+ rc = mu_rdcache_stream_create (&str, transport, flags);
+ mu_stream_unref (transport);
+ if (rc)
+ return rc;
+ transport = str;
+ }
+
+ *pstream = transport;
+ return 0;
+}
+

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