private void InternalExpand(int expandMinSize)
{
if (hGlobal.Count == HGlobalCache <char> .MaxSize && textWriter != null && offset != 0)
{
VersionDifferences.WriteChars(textWriter, hGlobal.GetPointer(), offset);
offset = 0;
Expand(expandMinSize);
}
else
{
hGlobal.Expand(expandMinSize);
}
}
private void InternalExpand(int expandMinSize)
{
if (HGCache.Capacity == HGlobalCache <char> .MaxSize && TextWriter != null && offset != 0)
{
HGCache.Count = offset;
HGCache.WriteTo(TextWriter);
offset = 0;
Expand(expandMinSize);
}
else
{
HGCache.Expand(expandMinSize);
}
}
public void Expand(int expandMinSize)
{
Loop:
if (hGlobal.count - offset < expandMinSize)
{
if (hGlobal.count == HGlobalCache.MaxSize && textWriter != null && offset != 0)
{
VersionDifferences.WriteChars(textWriter, hGlobal.chars, offset);
offset = 0;
goto Loop;
}
else
{
hGlobal.Expand(expandMinSize);
}
}
}
/// <summary>
/// 将 Stream 的内容缓存到 HGlobalCache 中。
/// </summary>
/// <param name="hGCache">HGlobalCache</param>
/// <param name="stream">Stream</param>
/// <param name="encoding">编码</param>
/// <returns>返回缓冲的长度</returns>
public static void ReadFrom(this HGlobalCache <char> hGCache, Stream stream, Encoding encoding)
{
var hGBytes = BytesPool.Rent();
hGBytes.ReadFrom(stream);
var maxCharsCount = encoding.GetMaxCharCount(hGBytes.Count);
if (maxCharsCount >= hGCache.Capacity)
{
hGCache.Expand(maxCharsCount);
}
hGCache.Count = encoding.GetChars(
hGBytes.GetPointer(),
hGBytes.Count,
hGCache.GetPointer(),
hGCache.Capacity);
BytesPool.Return(hGBytes);
}
/// <summary>
/// 异步将 Stream 的内容缓存到 HGlobalCache 中。
/// </summary>
/// <param name="hGCache">HGlobalCache</param>
/// <param name="stream">Stream</param>
/// <param name="encoding">编码</param>
/// <returns>返回缓冲的长度</returns>
public static async Task ReadFromAsync(this HGlobalCache <char> hGCache, Stream stream, Encoding encoding)
{
var hGBytes = BytesPool.Rent();
await hGBytes.ReadFromAsync(stream);
var maxCharsCount = encoding.GetMaxCharCount(hGBytes.Count);
if (maxCharsCount > hGCache.Capacity)
{
hGCache.Expand(maxCharsCount - hGCache.Capacity);
}
unsafe
{
hGCache.Count = encoding.GetChars(
hGBytes.GetPointer(),
hGBytes.Count,
hGCache.GetPointer(),
hGCache.Capacity);
}
BytesPool.Return(hGBytes);
}