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

src/input/TextInputStream.cxx

@@ -21,31 +21,15 @@
 #include "TextInputStream.hxx"
 #include "InputStream.hxx"
 #include "util/Error.hxx"
+#include "util/TextFile.hxx"
 #include "Log.hxx"
 
 #include <assert.h>
-#include <string.h>
-
-char *
-TextInputStream::ReadBufferedLine()
-{
-	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;
-}
 
 char *
 TextInputStream::ReadLine()
 {
-	char *line = ReadBufferedLine();
+	char *line = ReadBufferedLine(buffer);
 	if (line != nullptr)
 		return line;
 
@@ -76,7 +60,7 @@ TextInputStream::ReadLine()
 			return nullptr;
 		}
 
-		line = ReadBufferedLine();
+		line = ReadBufferedLine(buffer);
 		if (line != nullptr)
 			return line;
 

src/input/TextInputStream.hxx

@@ -47,9 +47,6 @@ public:
 	 * @return a pointer to the line, or nullptr on end-of-file or error
 	 */
 	char *ReadLine();
-
-private:
-	char *ReadBufferedLine();
 };
 
 #endif

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