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// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
namespace WixToolset.Dtf.Resources
{
using System;
using System.IO;
using System.Text;
using System.Reflection;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
internal class VersionInfo : ICollection<VersionInfo>
{
private string key;
private bool isString;
private byte[] data;
private List<VersionInfo> children;
public VersionInfo(string key)
: base()
{
if (key == null)
{
throw new ArgumentNullException("key");
}
this.key = key;
this.children = new List<VersionInfo>();
}
public string Key
{
get
{
return this.key;
}
set
{
if (value == null)
{
throw new ArgumentNullException("value");
}
this.key = value;
}
}
public bool IsString
{
get
{
return this.isString;
}
set
{
this.isString = value;
}
}
public byte[] Data
{
get
{
return this.data;
}
set
{
this.data = value;
this.isString = false;
}
}
public void Read(BinaryReader reader)
{
long basePosition = reader.BaseStream.Position;
int verInfoSize = (int) reader.ReadUInt16();
int valueSize = (int) reader.ReadUInt16();
bool dataIsString = (reader.ReadUInt16() != 0);
StringBuilder keyStringBuilder = new StringBuilder();
char c;
while ((c = (char) reader.ReadUInt16()) != 0)
{
keyStringBuilder.Append(c);
}
this.Key = keyStringBuilder.ToString();
Pad(reader, basePosition);
if (valueSize == 0)
{
this.data = null;
}
else
{
if (dataIsString) valueSize *= 2; // Count is # of chars instead of bytes
this.data = reader.ReadBytes(valueSize);
this.isString = dataIsString;
Pad(reader, basePosition);
}
while (reader.BaseStream.Position - basePosition < verInfoSize)
{
Pad(reader, basePosition);
VersionInfo childVerInfo = new VersionInfo("");
childVerInfo.Read(reader);
this.children.Add(childVerInfo);
}
}
public void Write(BinaryWriter writer)
{
long basePosition = writer.BaseStream.Position;
writer.Write((ushort) this.Length);
byte[] valueBytes = this.data;
writer.Write((ushort) ((valueBytes != null ? valueBytes.Length : 0) / (this.IsString ? 2 : 1)));
writer.Write((ushort) (this.IsString ? 1 : 0));
byte[] keyBytes = new byte[Encoding.Unicode.GetByteCount(this.Key) + 2];
Encoding.Unicode.GetBytes(this.Key, 0, this.Key.Length, keyBytes, 0);
writer.Write(keyBytes);
Pad(writer, basePosition);
if (valueBytes != null)
{
writer.Write(valueBytes);
Pad(writer, basePosition);
}
foreach (VersionInfo childVersionInfo in this.children)
{
Pad(writer, basePosition);
childVersionInfo.Write(writer);
}
}
private static void Pad(BinaryReader reader, long basePosition)
{
long position = reader.BaseStream.Position;
int diff = (int) (position - basePosition) % 4;
if (diff > 0) while (diff++ < 4 && reader.BaseStream.Position < reader.BaseStream.Length) reader.ReadByte();
}
private static void Pad(BinaryWriter writer, long basePosition)
{
long position = writer.BaseStream.Position;
int diff = (int) (position - basePosition) % 4;
if (diff > 0) while (diff++ < 4) writer.Write((byte) 0);
}
private int Length
{
get
{
int len = 6 + Encoding.Unicode.GetByteCount(this.Key) + 2;
if (len % 4 > 0) len += (4 - len % 4);
len += (this.data != null ? this.data.Length : 0);
if (len % 4 > 0) len += (4 - len % 4);
foreach (VersionInfo childVersionInfo in this.children)
{
if (len % 4 > 0) len += (4 - len % 4);
len += childVersionInfo.Length;
}
return len;
}
}
public static explicit operator VersionInfo(byte[] bytesValue)
{
VersionInfo viValue = new VersionInfo("");
using (BinaryReader reader = new BinaryReader(new MemoryStream(bytesValue, false)))
{
viValue.Read(reader);
}
return viValue;
}
public static explicit operator byte[](VersionInfo viValue)
{
byte[] bytesValue = new byte[viValue.Length];
using (BinaryWriter writer = new BinaryWriter(new MemoryStream(bytesValue, true)))
{
viValue.Write(writer);
}
return bytesValue;
}
public VersionInfo this[string itemKey]
{
get
{
int index = this.IndexOf(itemKey);
if (index < 0) return null;
return this.children[index];
}
}
public void Add(VersionInfo item)
{
this.children.Add(item);
}
public bool Remove(VersionInfo item)
{
return this.children.Remove(item);
}
public bool Remove(string itemKey)
{
int index = this.IndexOf(itemKey);
if (index >= 0)
{
this.children.RemoveAt(index);
return true;
}
else
{
return false;
}
}
private int IndexOf(string itemKey)
{
for (int i = 0; i < this.children.Count; i++)
{
if (this.children[i].Key == itemKey) return i;
}
return -1;
}
public bool Contains(VersionInfo item)
{
return this.children.Contains(item);
}
public void CopyTo(VersionInfo[] array, int index)
{
this.children.CopyTo(array, index);
}
public void Clear()
{
this.children.Clear();
}
public int Count
{
get
{
return this.children.Count;
}
}
public bool IsReadOnly
{
get
{
return false;
}
}
public IEnumerator<VersionInfo> GetEnumerator()
{
return this.children.GetEnumerator();
}
IEnumerator IEnumerable.GetEnumerator()
{
return this.GetEnumerator();
}
}
}
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