public unsafe bool Check(byte[] fileimage)
{
if (this.TagName == "head")
fixed(byte *img = &fileimage[0])
{
// reset checkSumAdjustment
headTable *head = (headTable *)(img + (uint)this.offset);
ULONG csa = head->checkSumAdjustment;
head->checkSumAdjustment = (ULONG)0;
bool ret = this.CalculateTableSum(fileimage) == (uint)this.checkSum;
// Check checkSumAdjustment
OffsetTable * offset = (OffsetTable *)img;
TableDirectoryEntry *entry = (TableDirectoryEntry *)(offset + 1);
TableDirectoryEntry *end = entry + (uint)offset->numTables;
uint sum = (uint)offset->Sum;
for (; entry < end; entry++)
{
sum += entry->Sum;
sum += (uint)entry->checkSum;
}
// restore checkSumAdjustment
head->checkSumAdjustment = csa;
return(ret); //&&sum==0xB1B0AFBA-(uint)csa;
}
return(this.CalculateTableSum(fileimage) == (uint)this.checkSum);
}
public override unsafe System.Windows.Forms.Control GetControl()
{
UI.TreeNode.ShareLog.Clear();
fixed(byte *pImg = &this.file.image[0])
{
headTable *table = (headTable *)(pImg + (uint)entry.offset);
UI.TreeNode.ShareLog.WriteLine(
"《head table》\r\n表形式 {0}\r\nフォントのバージョン {1}\r\n毎 em {2} 単位\r\n作成 {3}\r\n更新 {4}\r\n矩形 ({5},{6}) - ({7},{8})"
, table->TableVersionNumber.Value
, table->fontRevision.Value
, (ushort)table->unitsPerEm
, (System.DateTime)table->created, (System.DateTime)table->modified
, (short)table->xMin, (short)table->yMin, (short)table->xMax, (short)table->yMax);
}
return(UI.TreeNode.ShareTxtBox);
}
public unsafe bool Check(byte[] fileimage)
{
if (this.TagName == "head")
fixed(byte *img = &fileimage[0])
{
// reset checkSumAdjustment
headTable *head = (headTable *)(img + (uint)this.offset);
ULONG csa = head->checkSumAdjustment;
head->checkSumAdjustment = (ULONG)0;
uint csaR = 0xB1B0AFBA - (uint)csa;
bool ret = this.CalculateTableSum(fileimage) == (uint)this.checkSum;
// Check checkSumAdjustment
OffsetTable * offset = (OffsetTable *)img;
TableDirectoryEntry *entry = (TableDirectoryEntry *)(offset + 1);
TableDirectoryEntry *end = entry + (uint)offset->numTables;
uint sum = (uint)offset->Sum;
for (; entry < end; entry++)
{
sum += entry->Sum;
sum += (uint)entry->checkSum;
}
uint sum2 = this.SumEntireFont(fileimage);
// restore checkSumAdjustment
head->checkSumAdjustment = csa;
if (sum != sum2)
{
System.Console.WriteLine("checkSums of all the structures and the entire file are diffrent from each other.");
if (sum == csaR)
{
System.Console.WriteLine("checkSumAdjustment is calculated from all the structures.");
}
else if (sum2 == csaR)
{
System.Console.WriteLine("checkSumAdjustment is calculated from the entire file.");
}
else
{
System.Console.WriteLine("Neither structures nor entire file is used to calculate checkSumAdjustment: 0x{0:X8}", csaR);
}
}
else
{
if (sum != csaR)
{
System.Console.WriteLine("checkSumAdjustment is unexpected value: 0x{0:X8}", csaR);
}
}
System.Console.WriteLine("Σ1: 0x{0:X8}; checkSumAdjustment: 0x{1:X8}", sum, csaR);
System.Console.WriteLine("Σ2: 0x{0:X8}; checkSumAdjustment: 0x{1:X8}", sum2, csaR);
System.Console.WriteLine("Σ1 〜 checkSumAdjustment: 0x{0:X8} / 0x{1:X8}", csaR - sum, sum - csaR);
System.Console.WriteLine("Σ2 〜 checkSumAdjustment: 0x{0:X8} / 0x{1:X8}", csaR - sum2, sum2 - csaR);
return(ret);
}
return(this.CalculateTableSum(fileimage) == (uint)this.checkSum);
}
