public int GetCharacterDataSize(StringChunkInfo aChunkInfo, int aBytesAvailable)
{
if (aBytesAvailable <= 0)
{
aChunkInfo.Compressed = true;
aChunkInfo.Data = null;
return(0);
}
int num = Math.Min(this.Cch - aChunkInfo.CharPos, aBytesAvailable);
if (num == 0)
{
aChunkInfo.Compressed = true;
aChunkInfo.Data = null;
return(0);
}
if (aChunkInfo.Compressed)
{
aChunkInfo.CharPos += num;
return(num);
}
int num2 = Math.Min(this.Cch - aChunkInfo.CharPos, aBytesAvailable / 2);
aChunkInfo.CharPos += num2;
return(num2 * 2);
}
public int WriteCharacterData(Stream aOut, StringChunkInfo aChunkInfo, int aBytesAvailable)
{
if (aBytesAvailable <= 0)
{
aChunkInfo.Compressed = true;
aChunkInfo.Data = null;
return(0);
}
int num = Math.Min(this.Cch - aChunkInfo.CharPos, aBytesAvailable);
if (num == 0)
{
aChunkInfo.Compressed = true;
aChunkInfo.Data = null;
return(0);
}
if (aChunkInfo.Compressed)
{
StringUtil.DecodeTo1Byte(aOut, this.m_rgb, aChunkInfo.CharPos, num);
aChunkInfo.CharPos += num;
return(num);
}
int num2 = Math.Min(this.Cch - aChunkInfo.CharPos, aBytesAvailable / 2);
if (num2 != 0)
{
StringUtil.DecodeTo2ByteLE(aOut, this.m_rgb, aChunkInfo.CharPos, num2);
}
aChunkInfo.CharPos += num2;
return(num2 * 2);
}
public void PrepareWriteCharacterData(StringChunkInfo aChunkInfo, int aBytesAvailable)
{
if (aBytesAvailable <= 0)
{
aChunkInfo.Compressed = true;
}
else
{
int num = Math.Min(this.Cch - aChunkInfo.CharPos, aBytesAvailable);
if (num == 0)
{
aChunkInfo.Compressed = true;
}
else
{
aChunkInfo.Compressed = StringUtil.CanCompress(this.m_rgb, aChunkInfo.CharPos, num);
}
}
}
public byte[] GetCharacterData(StringChunkInfo aChunkInfo, int aBytesAvailable)
{
if (aBytesAvailable <= 0)
{
aChunkInfo.Compressed = true;
aChunkInfo.Data = null;
return(aChunkInfo.Data);
}
int num = Math.Min(this.Cch - aChunkInfo.CharPos, aBytesAvailable);
if (num == 0)
{
aChunkInfo.Compressed = true;
aChunkInfo.Data = null;
return(aChunkInfo.Data);
}
string text = this.String.Substring(aChunkInfo.CharPos, aChunkInfo.CharPos + num - aChunkInfo.CharPos);
if (StringUtil.CanCompress(text))
{
aChunkInfo.Compressed = true;
aChunkInfo.Data = StringUtil.DecodeTo1Byte(text);
aChunkInfo.CharPos += num;
return(aChunkInfo.Data);
}
int num2 = Math.Min(this.Cch - aChunkInfo.CharPos, aBytesAvailable / 2);
byte[] data;
if (num2 != 0)
{
text = text.Substring(0, num2);
data = StringUtil.DecodeTo2ByteLE(text);
}
else
{
data = new byte[0];
}
aChunkInfo.Compressed = false;
aChunkInfo.Data = data;
aChunkInfo.CharPos += num2;
return(aChunkInfo.Data);
}
private int CalcSize()
{
this.m_recordSize = new List <int>();
int num = 8228;
int num2 = 12;
int num3 = 0;
int num4 = num - num2;
StringChunkInfo stringChunkInfo = new StringChunkInfo();
foreach (StringWrapperBIFF8 item in this.m_stringOrder)
{
stringChunkInfo.CharsTotal = item.Cch;
int headerSize = item.HeaderSize;
int num5 = num4 - headerSize;
if (num5 < 0 || (num5 == 0 && item.Cch != 0))
{
this.m_recordSize.Add(num2);
num3 += num2;
num2 = 4;
num4 = num - num2;
}
int aBytesAvailable = num4 - headerSize;
num2 += headerSize;
item.PrepareWriteCharacterData(stringChunkInfo, aBytesAvailable);
num2 += item.GetCharacterDataSize(stringChunkInfo, aBytesAvailable);
num4 = ((!stringChunkInfo.HasMore) ? (num - num2) : 0);
while (stringChunkInfo.HasMore)
{
aBytesAvailable = num4;
item.PrepareWriteCharacterData(stringChunkInfo, aBytesAvailable);
int characterDataSize = item.GetCharacterDataSize(stringChunkInfo, aBytesAvailable);
num2 += characterDataSize;
if (characterDataSize == 0)
{
this.m_recordSize.Add(num2);
num3 += num2;
num2 = 5;
aBytesAvailable = 8223;
item.PrepareWriteCharacterData(stringChunkInfo, aBytesAvailable);
num2 += item.GetCharacterDataSize(stringChunkInfo, aBytesAvailable);
}
num4 = ((!stringChunkInfo.HasMore) ? (num - num2) : 0);
}
int num6 = item.FormatRunsDataSize;
if (num6 > 0)
{
while (num6 > 0)
{
if (num4 == 0)
{
this.m_recordSize.Add(num2);
num3 += num2;
num2 = 4;
num4 = num - num2;
}
int num7 = (num4 < num6) ? num4 : num6;
num7 -= num7 % 4;
if (num7 > 0)
{
num4 -= num7;
num6 -= num7;
num2 += num7;
}
else
{
num4 = 0;
}
}
}
}
this.m_recordSize.Add(num2);
return(num3 + num2);
}
public void Write(Stream aOut)
{
this.CalcSize();
this.m_count = 0;
int num = 8228;
int num2 = 12;
this.StartRecord(aOut, 252);
LittleEndianHelper.WriteIntU(aOut, this.m_totalStrings);
LittleEndianHelper.WriteIntU(aOut, this.UniqueStrings);
int num3 = num - num2;
StringChunkInfo stringChunkInfo = new StringChunkInfo();
foreach (StringWrapperBIFF8 item in this.m_stringOrder)
{
stringChunkInfo.CharsTotal = item.Cch;
int headerSize = item.HeaderSize;
int num4 = num3 - headerSize;
if (num4 < 0 || (num4 == 0 && item.Cch != 0))
{
this.StartRecord(aOut, 60);
num2 = 4;
num3 = num - num2;
}
int aBytesAvailable = num3 - headerSize;
num2 += headerSize;
item.PrepareWriteCharacterData(stringChunkInfo, aBytesAvailable);
item.WriteHeaderData(aOut, stringChunkInfo.Compressed);
num2 += item.WriteCharacterData(aOut, stringChunkInfo, aBytesAvailable);
num3 = ((!stringChunkInfo.HasMore) ? (num - num2) : 0);
while (stringChunkInfo.HasMore)
{
aBytesAvailable = num3;
int charPos = stringChunkInfo.CharPos;
int characterDataSize = item.GetCharacterDataSize(stringChunkInfo, aBytesAvailable);
stringChunkInfo.CharPos = charPos;
if (characterDataSize == 0)
{
this.StartRecord(aOut, 60);
num2 = 5;
aBytesAvailable = 8223;
item.PrepareWriteCharacterData(stringChunkInfo, aBytesAvailable);
aOut.WriteByte((byte)((!stringChunkInfo.Compressed) ? 1 : 0));
}
else
{
item.PrepareWriteCharacterData(stringChunkInfo, aBytesAvailable);
}
num2 += item.WriteCharacterData(aOut, stringChunkInfo, aBytesAvailable);
num3 = ((!stringChunkInfo.HasMore) ? (num - num2) : 0);
}
int num5 = item.FormatRunsDataSize;
if (num5 > 0)
{
byte[] formatRunsData = item.FormatRunsData;
while (num5 > 0)
{
if (num3 == 0)
{
this.StartRecord(aOut, 60);
num2 = 4;
num3 = num - num2;
}
int num6 = (num3 < num5) ? num3 : num5;
num6 -= num6 % 4;
if (num6 > 0)
{
aOut.Write(formatRunsData, formatRunsData.Length - num5, num6);
num3 -= num6;
num5 -= num6;
num2 += num6;
}
else
{
num3 = 0;
}
}
}
}
}
