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Refactoring

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increase diagnostic ability for a textfile, pull out some properties
that aren't used outside of the library
#253
This commit is contained in:
Kurt
2017-12-10 20:57:21 -08:00
parent 3d6860d1ec
commit dd5dc2cabd
1 changed files with 61 additions and 25 deletions
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86
pk3DS.Core/TextFile.cs
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@@ -73,60 +73,96 @@ private class LineInfo
public int Offset, Length;
}
public string[] Lines
public byte[] this[int index]
{
get
{
ushort key = GetLineKey(index);
var line = LineOffsets[index];
byte[] EncryptedLineData = new byte[line.Length * 2];
Array.Copy(Data, line.Offset, EncryptedLineData, 0, EncryptedLineData.Length);
return cryptLineData(EncryptedLineData, key);
}
}
private static ushort GetLineKey(int index)
{
ushort key = KEY_BASE;
for (int i = 0; i < index; i++)
key += KEY_ADVANCE;
return key;
}
public byte[][] LineData
{
get
{
ushort key = KEY_BASE;
string[] result = new string[LineCount];
byte[][] result = new byte[LineCount][];
LineInfo[] lines = LineOffsets;
for (int i = 0; i < lines.Length; i++)
{
byte[] EncryptedLineData = new byte[lines[i].Length * 2];
Array.Copy(Data, lines[i].Offset, EncryptedLineData, 0, EncryptedLineData.Length);
byte[] DecryptedLineData = cryptLineData(EncryptedLineData, key);
result[i] = getLineString(Config, DecryptedLineData);
result[i] = cryptLineData(EncryptedLineData, key);
key += KEY_ADVANCE;
}
return result;
}
set
{
if (value == null)
value = new string[0];
ushort key = KEY_BASE;
// rebuild LineInfo
LineInfo[] lines = new LineInfo[value.Length];
// Get Line Data
byte[][] lineData = new byte[lines.Length][];
int sdo = (int)SectionDataOffset;
int bytesUsed = 0;
for (int i = 0; i < lines.Length; i++)
{
string text = (value[i] ?? "").Trim();
if (text.Length == 0 && SETEMPTYTEXT)
text = $"[~ {i}]";
byte[] DecryptedLineData = getLineData(Config, text);
lineData[i] = cryptLineData(DecryptedLineData, key);
if (lineData[i].Length % 4 == 2)
Array.Resize(ref lineData[i], lineData[i].Length + 2);
key += KEY_ADVANCE;
lines[i] = new LineInfo { Offset = 4 + 8 * value.Length + bytesUsed, Length = DecryptedLineData.Length / 2 };
bytesUsed += lineData[i].Length;
lines[i] = new LineInfo {Offset = 4 + 8 * value.Length + bytesUsed, Length = value[i].Length / 2};
bytesUsed += value[i].Length;
}
// Apply Line Data
int sdo = (int)SectionDataOffset;
Array.Resize(ref Data, sdo + 4 + 8 * value.Length + bytesUsed);
LineOffsets = lines; // Handled by LineInfo[] set {}
lineData.SelectMany(i => i).ToArray().CopyTo(Data, Data.Length - bytesUsed);
LineOffsets = lines;
value.SelectMany(i => i).ToArray().CopyTo(Data, Data.Length - bytesUsed);
TotalLength = SectionLength = (uint)(Data.Length - sdo);
LineCount = (ushort)value.Length;
}
}
public string[] Lines
{
get => LineData.Select(z => getLineString(Config, z)).ToArray();
set => LineData = ConvertLinesToData(value);
}
private byte[][] ConvertLinesToData(string[] value)
{
if (value == null)
value = new string[0];
ushort key = KEY_BASE;
// Get Line Data
byte[][] lineData = new byte[value.Length][];
for (int i = 0; i < value.Length; i++)
{
string text = (value[i] ?? "").Trim();
if (text.Length == 0 && SETEMPTYTEXT)
text = $"[~ {i}]";
byte[] DecryptedLineData = getLineData(Config, text);
lineData[i] = cryptLineData(DecryptedLineData, key);
if (lineData[i].Length % 4 == 2)
Array.Resize(ref lineData[i], lineData[i].Length + 2);
key += KEY_ADVANCE;
}
return lineData;
}
public byte[] Data;
private byte[] cryptLineData(byte[] data, ushort key)
private static byte[] cryptLineData(byte[] data, ushort key)
{
byte[] result = new byte[data.Length];
for (int i = 0; i < result.Length; i += 2)