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_text.cpp | 95 ++++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 Src/replicant/nsid3v2/frame_text.cpp

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

diff --git a/Src/replicant/nsid3v2/frame_text.cpp b/Src/replicant/nsid3v2/frame_text.cpp
new file mode 100644
index 00000000..4e0260be
--- /dev/null
+++ b/Src/replicant/nsid3v2/frame_text.cpp
@@ -0,0 +1,95 @@
+#include "nsid3v2.h"
+#include "nsid3v2/header.h"
+#include "nsid3v2/tag.h"
+#include "nu/ByteReader.h"
+#include "nx/nxstring.h"
+#include "nu/ByteWriter.h"
+#include "nsid3v2/frame_utils.h"
+
+static int ParseText(const void *data, size_t data_len, ParsedString &parsed)
+{
+	if (data_len == 0)
+		return NErr_Insufficient;
+
+	bytereader_value_t byte_reader;
+	bytereader_init(&byte_reader, data, data_len);
+	
+	return ParseFrameTerminatedString(&byte_reader, bytereader_read_u8(&byte_reader), parsed);
+}
+
+int NSID3v2_Frame_Text_Get(const nsid3v2_frame_t f, nx_string_t *value, int text_flags)
+{
+	const ID3v2::Frame *frame = (const ID3v2::Frame *)f;
+	if (frame)
+	{
+		const void *data;
+		size_t data_len;
+		ParsedString parsed;
+		if (frame->GetData(&data, &data_len) == NErr_Success && data_len > 0 && ParseText(data, data_len, parsed) == NErr_Success)
+		{
+			return NXStringCreateFromParsedString(value, parsed, text_flags);
+		}
+	}
+
+	return NErr_Empty;
+}
+
+int NSID3v2_Tag_Text_Get(const nsid3v2_tag_t t, int frame_enum, 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(frame_enum);
+	return NSID3v2_Frame_Text_Get((const nsid3v2_frame_t)frame, value, text_flags);
+}
+
+
+/* ---------------- Setters ---------------- */
+int NSID3v2_Frame_Text_Set(nsid3v2_frame_t f, nx_string_t value, int text_flags)
+{
+	ID3v2::Frame *frame = (ID3v2::Frame *)f;
+	if (frame)
+	{
+		/* benski> for now, we're going to store UTF-16LE always. in the future, we'll add functions to NXString to determine a 'best' encoding */
+		size_t byte_count=0;
+		int ret = NXStringGetBytesSize(&byte_count, value, nx_charset_utf16le, 0);
+		if (ret != NErr_DirectPointer && ret != NErr_Success)
+			return ret;
+
+		void *data;
+		size_t data_len;
+		byte_count+=3;  // need one byte for encoding type, two bytes for BOM
+		ret = frame->NewData(byte_count, &data, &data_len);
+		if (ret != NErr_Success)
+			return ret;
+
+		bytewriter_s byte_writer;
+		bytewriter_init(&byte_writer, data, data_len);
+		bytewriter_write_u8(&byte_writer, 1); /* mark as UTF-16LE */
+		bytewriter_write_u16_le(&byte_writer, 0xFEFF); /* BOM */
+
+		size_t bytes_copied;
+		return NXStringGetBytes(&bytes_copied, value, bytewriter_pointer(&byte_writer), bytewriter_size(&byte_writer), nx_charset_utf16le, 0);
+	}
+
+	return NErr_Empty;
+}
+
+int NSID3v2_Tag_Text_Set(nsid3v2_tag_t t, int frame_enum, nx_string_t value, int text_flags)
+{
+	ID3v2::Tag *tag = (ID3v2::Tag *)t;
+	if (!tag)
+		return NErr_Empty;
+
+	ID3v2::Frame *frame = tag->FindFirstFrame(frame_enum);
+	if (!frame)
+	{
+		frame = tag->NewFrame(frame_enum, 0);
+		if (!frame)
+			return NErr_OutOfMemory;
+		tag->AddFrame(frame);
+	}
+	
+	return NSID3v2_Frame_Text_Set((nsid3v2_frame_t)frame, value, text_flags);
+}
-- 
cgit