From 20d28e80a5c861a9d5f449ea911ab75b4f37ad0d Mon Sep 17 00:00:00 2001
From: Jef <jef@targetspot.com>
Date: Tue, 24 Sep 2024 14:54:57 +0200
Subject: Initial community commit

---
 Src/replicant/nsid3v2/frame_userurl.cpp | 78 +++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 Src/replicant/nsid3v2/frame_userurl.cpp

(limited to 'Src/replicant/nsid3v2/frame_userurl.cpp')

diff --git a/Src/replicant/nsid3v2/frame_userurl.cpp b/Src/replicant/nsid3v2/frame_userurl.cpp
new file mode 100644
index 00000000..ca053012
--- /dev/null
+++ b/Src/replicant/nsid3v2/frame_userurl.cpp
@@ -0,0 +1,78 @@
+#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 <string.h>
+#endif
+
+struct ParsedUserURL
+{
+	ParsedString description;
+	ParsedString value;
+};
+
+static int ParseUserURL(const void *data, size_t data_len, ParsedUserURL &parsed)
+{
+	int ret;
+	if (data_len < 2)
+		return NErr_Insufficient;
+
+	bytereader_value_t byte_reader;
+	bytereader_init(&byte_reader, data, data_len);
+
+	uint8_t encoding = bytereader_read_u8(&byte_reader);
+
+	ret = ParseNullTerminatedString(&byte_reader, encoding, parsed.description);
+	if (ret != NErr_Success)
+		return ret;
+
+	return ParseFrameTerminatedString(&byte_reader, 0, parsed.value);
+}
+
+int NSID3v2_Tag_WXXX_Get(const nsid3v2_tag_t t, const char *description, nx_string_t *value, int text_flags)
+{
+	const ID3v2::Tag *tag = (const ID3v2::Tag *)t;
+	if (!tag)
+		return NErr_Empty;
+	const ID3v2::Frame *frame = tag->FindFirstFrame(NSID3V2_FRAME_USER_TEXT);
+	while (frame)
+	{
+		const void *data;
+		size_t data_len;
+		ParsedUserURL parsed;
+		if (frame->GetData(&data, &data_len) == NErr_Success && data_len > 0 && ParseUserURL(data, data_len, parsed) == NErr_Success && DescriptionMatches(parsed.description, description, text_flags))
+		{
+			return NXStringCreateFromParsedString(value, parsed.value, text_flags);
+		}
+
+		frame = tag->FindNextFrame(frame);
+	}
+
+	return NErr_Empty;
+}
+
+int NSID3v2_Frame_UserURL_Get(const nsid3v2_frame_t f, nx_string_t *description, nx_string_t *value, int text_flags)
+{
+	const ID3v2::Frame *frame = (const ID3v2::Frame *)f;
+	if (frame)
+	{
+		const void *data;
+		size_t data_len;
+		ParsedUserURL parsed;
+		if (frame->GetData(&data, &data_len) == NErr_Success && data_len > 0 && ParseUserURL(data, data_len, parsed) == NErr_Success)
+		{
+			int ret = NXStringCreateFromParsedString(value, parsed.value, text_flags);
+			if (ret != NErr_Success)
+				return ret;
+
+			return NXStringCreateFromParsedString(description, parsed.description, text_flags);
+		}
+
+	}
+	return NErr_Error;
+}
-- 
cgit