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-rw-r--r--src/fs/TextFile.cxx77
1 files changed, 77 insertions, 0 deletions
diff --git a/src/fs/TextFile.cxx b/src/fs/TextFile.cxx
new file mode 100644
index 000000000..4a64ee963
--- /dev/null
+++ b/src/fs/TextFile.cxx
@@ -0,0 +1,77 @@
+/*
+ * 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.
+ */
+
+#include "config.h"
+#include "TextFile.hxx"
+#include "fs/Path.hxx"
+#include "fs/FileSystem.hxx"
+
+#include <glib.h>
+
+#include <assert.h>
+#include <string.h>
+
+TextFile::TextFile(Path path_fs)
+ :file(FOpen(path_fs, FOpenMode::ReadText)),
+ buffer(g_string_sized_new(step)) {}
+
+TextFile::~TextFile()
+{
+ if (file != nullptr)
+ fclose(file);
+
+ g_string_free(buffer, true);
+}
+
+char *
+TextFile::ReadLine()
+{
+ gsize length = 0, i;
+ char *p;
+
+ assert(file != nullptr);
+ assert(buffer != nullptr);
+ assert(buffer->allocated_len >= step);
+
+ while (buffer->len < max_length) {
+ p = fgets(buffer->str + length,
+ buffer->allocated_len - length, file);
+ if (p == nullptr) {
+ if (length == 0 || ferror(file))
+ return nullptr;
+ break;
+ }
+
+ i = strlen(buffer->str + length);
+ length += i;
+ if (i < step - 1 || buffer->str[length - 1] == '\n')
+ break;
+
+ g_string_set_size(buffer, length + step);
+ }
+
+ /* remove the newline characters */
+ if (buffer->str[length - 1] == '\n')
+ --length;
+ if (buffer->str[length - 1] == '\r')
+ --length;
+
+ g_string_set_size(buffer, length);
+ return buffer->str;
+}