From: Timo Sirainen <timo.sirainen@dovecot.fi>
Date: Tue, 12 Apr 2016 17:00:51 +0000 (+0300)
Subject: lib: Added ostream-null
X-Git-Tag: 2.2.24~68
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d1eec04fac1f40f4d8f4c84f7f90ef6944495418;p=thirdparty%2Fdovecot%2Fcore.git

lib: Added ostream-null
---

diff --git a/src/lib/Makefile.am b/src/lib/Makefile.am
index 712ec856e7..d5705e9058 100644
--- a/src/lib/Makefile.am
+++ b/src/lib/Makefile.am
@@ -112,6 +112,7 @@ liblib_la_SOURCES = \
 	ostream-failure-at.c \
 	ostream-file.c \
 	ostream-hash.c \
+	ostream-null.c \
 	ostream-rawlog.c \
 	primes.c \
 	printf-format-fix.c \
@@ -244,6 +245,7 @@ headers = \
 	ostream-failure-at.h \
 	ostream-hash.h \
 	ostream-private.h \
+	ostream-null.h \
 	ostream-rawlog.h \
 	primes.h \
 	printf-format-fix.h \
diff --git a/src/lib/ostream-null.c b/src/lib/ostream-null.c
new file mode 100644
index 0000000000..7c00284718
--- /dev/null
+++ b/src/lib/ostream-null.c
@@ -0,0 +1,32 @@
+/* Copyright (c) 2016 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "ostream-private.h"
+#include "ostream-null.h"
+
+static ssize_t
+o_stream_null_sendv(struct ostream_private *stream,
+		    const struct const_iovec *iov, unsigned int iov_count)
+{
+	unsigned int i;
+	size_t ret = 0;
+
+	for (i = 0; i < iov_count; i++)
+		ret += iov[i].iov_len;
+	stream->ostream.offset += ret;
+	return ret;
+}
+
+struct ostream *o_stream_create_null(void)
+{
+	struct ostream_private *stream;
+	struct ostream *output;
+
+	stream = i_new(struct ostream_private, 1);
+	stream->sendv = o_stream_null_sendv;
+
+	output = o_stream_create(stream, NULL, -1);
+	o_stream_set_no_error_handling(output, TRUE);
+	o_stream_set_name(output, "(/dev/null)");
+	return output;
+}
diff --git a/src/lib/ostream-null.h b/src/lib/ostream-null.h
new file mode 100644
index 0000000000..7c83c801f3
--- /dev/null
+++ b/src/lib/ostream-null.h
@@ -0,0 +1,7 @@
+#ifndef OSTREAM_NULL_H
+#define OSTREAM_NULL_H
+
+/* Create an output stream that ignores all the writes. */
+struct ostream *o_stream_create_null(void);
+
+#endif