124 lines
3.7 KiB
C#
124 lines
3.7 KiB
C#
// ==++==
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// ==--==
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namespace System.Globalization {
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using System.Text;
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using System.Runtime.Remoting;
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using System;
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using System.Security;
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//
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// Data item for EncodingTable. Along with EncodingTable, they are used by
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// System.Text.Encoding.
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//
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// This class stores a pointer to the internal data and the index into that data
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// where our required information is found. We load the code page, flags and uiFamilyCodePage
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// immediately because they don't require creating an object. Creating any of the string
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// names is delayed until somebody actually asks for them and the names are then cached.
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[Serializable]
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internal class CodePageDataItem
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{
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internal int m_dataIndex;
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internal int m_uiFamilyCodePage;
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internal String m_webName;
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internal String m_headerName;
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internal String m_bodyName;
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internal uint m_flags;
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[SecurityCritical]
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unsafe internal CodePageDataItem(int dataIndex) {
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m_dataIndex = dataIndex;
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m_uiFamilyCodePage = EncodingTable.codePageDataPtr[dataIndex].uiFamilyCodePage;
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m_flags = EncodingTable.codePageDataPtr[dataIndex].flags;
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}
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static readonly char [] sep = {'|'};
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[System.Security.SecurityCritical]
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unsafe internal static String CreateString(string pStrings, uint index)
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{
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if (pStrings[0] == '|') // |str1|str2|str3
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{
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return pStrings.Split (sep, StringSplitOptions.RemoveEmptyEntries) [index];
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/*
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int start = 1;
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for (int i = 1; true; i ++)
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{
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sbyte ch = pStrings[i];
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if ((ch == '|') || (ch == 0))
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{
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if (index == 0)
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{
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return new String(pStrings, start, i - start);
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}
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index --;
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start = i + 1;
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if (ch == 0)
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{
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break;
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}
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}
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}
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throw new ArgumentException("pStrings");
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*/
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}
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else
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{
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return pStrings;
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//return new String(pStrings);
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}
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}
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unsafe public String WebName {
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[System.Security.SecuritySafeCritical] // auto-generated
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get {
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if (m_webName==null) {
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m_webName = CreateString(EncodingTable.codePageDataPtr[m_dataIndex].Names, 0);
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}
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return m_webName;
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}
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}
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public virtual int UIFamilyCodePage {
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get {
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return m_uiFamilyCodePage;
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}
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}
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unsafe public String HeaderName {
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[System.Security.SecuritySafeCritical] // auto-generated
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get {
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if (m_headerName==null) {
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m_headerName = CreateString(EncodingTable.codePageDataPtr[m_dataIndex].Names, 1);
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}
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return m_headerName;
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}
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}
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unsafe public String BodyName {
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[System.Security.SecuritySafeCritical] // auto-generated
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get {
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if (m_bodyName==null) {
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m_bodyName = CreateString(EncodingTable.codePageDataPtr[m_dataIndex].Names, 2);
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}
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return m_bodyName;
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}
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}
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unsafe public uint Flags {
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get {
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return (m_flags);
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}
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}
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}
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}
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