FindCodePage()

unsafe bool System.Text.BaseCodePageEncoding.FindCodePage ( int codePage )

inlineprivateinherited

Definition at line 209 of file BaseCodePageEncoding.cs.

    {
        byte[] array = new byte[sizeof(CodePageIndex)];
        lock (s_streamLock)
        {
            s_codePagesEncodingDataStream.Seek(44L, SeekOrigin.Begin);
            int codePageCount;
            fixed (byte* ptr = &s_codePagesDataHeader[0])
            {
                CodePageDataFileHeader* ptr2 = (CodePageDataFileHeader*)ptr;
                codePageCount = ptr2->CodePageCount;
            }
            fixed (byte* ptr3 = &array[0])
            {
                CodePageIndex* ptr4 = (CodePageIndex*)ptr3;
                for (int i = 0; i < codePageCount; i++)
                {
                    ReadCodePageIndex(s_codePagesEncodingDataStream, array);
                    if (ptr4->CodePage == codePage)
                    {
                        long position = s_codePagesEncodingDataStream.Position;
                        s_codePagesEncodingDataStream.Seek(ptr4->Offset, SeekOrigin.Begin);
                        ReadCodePageHeader(s_codePagesEncodingDataStream, m_codePageHeader);
                        m_firstDataWordOffset = (int)s_codePagesEncodingDataStream.Position;
                        if (i == codePageCount - 1)
                        {
                            m_dataSize = (int)(s_codePagesEncodingDataStream.Length - ptr4->Offset - m_codePageHeader.Length);
                        }
                        else
                        {
                            s_codePagesEncodingDataStream.Seek(position, SeekOrigin.Begin);
                            int offset = ptr4->Offset;
                            ReadCodePageIndex(s_codePagesEncodingDataStream, array);
                            m_dataSize = ptr4->Offset - offset - m_codePageHeader.Length;
                        }
                        return true;
                    }
                }
            }
        }
        return false;
    }

References System.array, System.Text.BaseCodePageEncoding.CodePageDataFileHeader.CodePageCount, System.Runtime.Serialization.Dictionary, System.L, System.Text.BaseCodePageEncoding.m_codePageHeader, System.Text.BaseCodePageEncoding.m_dataSize, System.Text.BaseCodePageEncoding.m_firstDataWordOffset, System.offset, System.Text.BaseCodePageEncoding.ReadCodePageHeader(), System.Text.BaseCodePageEncoding.ReadCodePageIndex(), System.Text.BaseCodePageEncoding.s_codePagesDataHeader, System.Text.BaseCodePageEncoding.s_codePagesEncodingDataStream, and System.Text.BaseCodePageEncoding.s_streamLock.

Referenced by System.Text.BaseCodePageEncoding.LoadCodePageTables().