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authorDenis Krjuchkov <denis@crazydev.net>2013-12-07 03:22:58 +0600
committerDenis Krjuchkov <denis@crazydev.net>2013-12-08 04:15:27 +0600
commitacba9c0f6170b34e2a1c08b2b767554bc65cb5b4 (patch)
treed777229b12d3501d5f059bac0f98224efe675036 /src/fs/TextFile.hxx
parentad7302a032847636d6462946a662f441bdfaaf56 (diff)
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TextFile: move to fs subsystem
Diffstat (limited to 'src/fs/TextFile.hxx')
-rw-r--r--src/fs/TextFile.hxx61
1 files changed, 61 insertions, 0 deletions
diff --git a/src/fs/TextFile.hxx b/src/fs/TextFile.hxx
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+++ b/src/fs/TextFile.hxx
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+/*
+ * Copyright (C) 2003-2013 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_TEXT_FILE_HXX
+#define MPD_TEXT_FILE_HXX
+
+#include "Compiler.h"
+
+#include <stdio.h>
+
+class Path;
+typedef struct _GString GString;
+
+class TextFile {
+ static constexpr size_t max_length = 512 * 1024;
+ static constexpr size_t step = 1024;
+
+ FILE *const file;
+
+ GString *const buffer;
+
+public:
+ TextFile(Path path_fs);
+
+ TextFile(const TextFile &other) = delete;
+
+ ~TextFile();
+
+ bool HasFailed() const {
+ return gcc_unlikely(file == nullptr);
+ }
+
+ /**
+ * Reads a line from the input file, and strips trailing
+ * space. There is a reasonable maximum line length, only to
+ * prevent denial of service.
+ *
+ * @param file the source file, opened in text mode
+ * @param buffer an allocator for the buffer
+ * @return a pointer to the line, or nullptr on end-of-file or error
+ */
+ char *ReadLine();
+};
+
+#endif