From 90fe4c5124e3fd335f05804d3cc47ba996e62b14 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Thu, 3 Jan 2013 10:16:05 +0100
Subject: TextFile: convert to a class

---
 src/TextFile.hxx | 49 ++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 38 insertions(+), 11 deletions(-)

(limited to 'src/TextFile.hxx')

diff --git a/src/TextFile.hxx b/src/TextFile.hxx
index 5bd6dbd3c..25f6ea7a8 100644
--- a/src/TextFile.hxx
+++ b/src/TextFile.hxx
@@ -20,20 +20,47 @@
 #ifndef MPD_TEXT_FILE_HXX
 #define MPD_TEXT_FILE_HXX
 
+#include "gcc.h"
+
 #include <glib.h>
 
 #include <stdio.h>
 
-/**
- * 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 NULL on end-of-file or error
- */
-char *
-read_text_line(FILE *file, GString *buffer);
+class TextFile {
+	static constexpr size_t max_length = 512 * 1024;
+	static constexpr size_t step = 1024;
+
+	FILE *const file;
+
+	GString *const buffer;
+
+public:
+	TextFile(const char *path_fs)
+		:file(fopen(path_fs, "r")), buffer(g_string_sized_new(step)) {}
+
+	TextFile(const TextFile &other) = delete;
+
+	~TextFile() {
+		if (file != nullptr)
+			fclose(file);
+
+		g_string_free(buffer, true);
+	}
+
+	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 NULL on end-of-file or error
+	 */
+	char *ReadLine();
+};
 
 #endif
-- 
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