Initial community commit

Src/replicant/nsid3v2/frame_private.cpp

@@ -0,0 +1,61 @@
+#include "nsid3v2.h"
+#include "nsid3v2/header.h"
+#include "nsid3v2/tag.h"
+#include "nsid3v2/frame_utils.h"
+#include "nu/ByteReader.h"
+#include "nx/nxstring.h"
+#if defined(_WIN32) && !defined(strcasecmp)
+#define strcasecmp _stricmp
+#else
+#include <strings.h>
+#endif
+
+
+struct ParsedPrivate
+{
+	ParsedString owner;
+	const void *private_data;
+	size_t private_byte_length;
+};
+
+static int ParsePrivate(const void *data, size_t data_len, ParsedPrivate &parsed)
+{
+	if (data_len == 0)
+		return NErr_Insufficient;
+
+	bytereader_value_t byte_reader;
+	bytereader_init(&byte_reader, data, data_len);
+
+	int ret = ParseNullTerminatedString(&byte_reader, 0, parsed.owner);
+	if (ret != NErr_Success)
+		return ret;
+
+	parsed.private_data = bytereader_pointer(&byte_reader);
+	parsed.private_byte_length = bytereader_size(&byte_reader);
+
+	return NErr_Success;
+}
+
+int NSID3v2_Frame_Private_Get(const nsid3v2_frame_t f, nx_string_t *description, const void **out_data, size_t *length)
+{
+	const ID3v2::Frame *frame = (const ID3v2::Frame *)f;
+	if (frame)
+	{
+		const void *data;
+		size_t data_len;
+		ParsedPrivate parsed;
+		if (frame->GetData(&data, &data_len) == NErr_Success && data_len > 0 && ParsePrivate(data, data_len, parsed) == NErr_Success)
+		{
+			int ret = NXStringCreateFromParsedString(description, parsed.owner, 0);
+			if (ret != NErr_Success)
+				return ret;
+
+			*out_data = parsed.private_data;
+			*length = parsed.private_byte_length;
+
+			return NErr_Success;
+		}
+
+	}
+	return NErr_Empty;
+}