input/TextInputStream: move ReadBufferedLine() to util/TextFile.hxx

1 files changed, 52 insertions, 0 deletions

diff --git a/src/util/TextFile.hxx b/src/util/TextFile.hxx
new file mode 100644
index 000000000..3d7d2d0df
--- /dev/null
+++ b/src/util/TextFile.hxx
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2008-2014 Max Kellermann <max@duempel.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef TEXT_FILE_HXX
+#define TEXT_FILE_HXX
+
+#include <string.h>
+
+template<typename B>
+char *
+ReadBufferedLine(B &buffer)
+{
+	auto r = buffer.Read();
+	char *newline = reinterpret_cast<char*>(memchr(r.data, '\n', r.size));
+	if (newline == nullptr)
+		return nullptr;
+
+	buffer.Consume(newline + 1 - r.data);
+
+	if (newline > r.data && newline[-1] == '\r')
+		--newline;
+	*newline = 0;
+	return r.data;
+}
+
+#endif