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authorMax Kellermann <max@duempel.org>2009-10-12 22:30:59 +0200
committerMax Kellermann <max@duempel.org>2009-10-12 22:30:59 +0200
commitdbb1e732b83645156ced0075444b1f309b66209c (patch)
treee8fcfe9b620f56e34340522d27fd244d17eba82f /src/text_input_stream.c
parent7ec503c4ec83f4ef86a816bba24635daa25c74b7 (diff)
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text_input_stream: input_stream wrapper for reading text files
Diffstat (limited to 'src/text_input_stream.c')
-rw-r--r--src/text_input_stream.c88
1 files changed, 88 insertions, 0 deletions
diff --git a/src/text_input_stream.c b/src/text_input_stream.c
new file mode 100644
index 000000000..ec81c9a27
--- /dev/null
+++ b/src/text_input_stream.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2003-2009 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 "text_input_stream.h"
+#include "input_stream.h"
+#include "fifo_buffer.h"
+
+#include <glib.h>
+
+#include <string.h>
+
+struct text_input_stream {
+ struct input_stream *is;
+
+ struct fifo_buffer *buffer;
+
+ char *line;
+};
+
+struct text_input_stream *
+text_input_stream_new(struct input_stream *is)
+{
+ struct text_input_stream *tis = g_new(struct text_input_stream, 1);
+
+ tis->is = is;
+ tis->buffer = fifo_buffer_new(4096);
+ tis->line = NULL;
+
+ return tis;
+}
+
+void
+text_input_stream_free(struct text_input_stream *tis)
+{
+ fifo_buffer_free(tis->buffer);
+ g_free(tis->line);
+ g_free(tis);
+}
+
+const char *
+text_input_stream_read(struct text_input_stream *tis)
+{
+ void *dest;
+ const char *src, *p;
+ size_t length, nbytes;
+
+ g_free(tis->line);
+ tis->line = NULL;
+
+ do {
+ dest = fifo_buffer_write(tis->buffer, &length);
+ if (dest != NULL) {
+ nbytes = input_stream_read(tis->is, dest, length);
+ if (nbytes > 0)
+ fifo_buffer_append(tis->buffer, nbytes);
+ }
+
+ src = fifo_buffer_read(tis->buffer, &length);
+ if (src == NULL)
+ return NULL;
+
+ p = memchr(src, '\n', length);
+ } while (p == NULL);
+
+ length = p - src + 1;
+ while (p > src && g_ascii_isspace(p[-1]))
+ --p;
+
+ tis->line = g_strndup(src, p - src);
+ fifo_buffer_consume(tis->buffer, length);
+ return tis->line;
+}