starred/sharpcompress
1
0
Fork 0
mirror of https://github.com/adamhathcock/sharpcompress.git synced 2026-09-22 15:04:43 +00:00
Code Issues 975 Packages Projects Releases 25 Wiki Activity

Make PpmdProperties lazy to avoid unnecessary allocations.

Browse Source
This commit is contained in:
Adam Hathcock
2016-10-03 10:16:26 +01:00
parent e5ee399045
commit 74af0889b9
4 changed files with 13 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
README.md
View File

@@ -9,7 +9,7 @@ The major feature is support for non-seekable streams so large files can be proc
## Need Help?
Post Issues on Github!
Check the [Supported Formats](FORMATS.md) and [basic usage.](USAGE.md)
Check the [Supported Formats](FORMATS.md) and [Basic Usage.](USAGE.md)
## A Simple Request

7
src/SharpCompress/Compressors/PPMd/PpmdProperties.cs
View File

@@ -3,13 +3,6 @@ using SharpCompress.Converters;
namespace SharpCompress.Compressors.PPMd
{
public enum PpmdVersion
{
H,
H7z,
I1
}
public class PpmdProperties
{
public PpmdVersion Version = PpmdVersion.I1;

9
src/SharpCompress/Compressors/PPMd/PpmdVersion.cs Normal file
View File

@@ -0,0 +1,9 @@
namespace SharpCompress.Compressors.PPMd
{
public enum PpmdVersion
{
H,
H7z,
I1
}
}

6
src/SharpCompress/Writers/Zip/ZipWriter.cs
View File

@@ -19,7 +19,7 @@ namespace SharpCompress.Writers.Zip
{
private readonly CompressionType compressionType;
private readonly CompressionLevel compressionLevel;
private readonly PpmdProperties ppmdProperties = new PpmdProperties(); // Caching properties to speed up PPMd
private readonly Lazy<PpmdProperties> ppmdProperties = new Lazy<PpmdProperties>(() => new PpmdProperties()); // Caching properties to speed up PPMd
private readonly List<ZipCentralDirectoryEntry> entries = new List<ZipCentralDirectoryEntry>();
private readonly string zipComment;
private long streamPosition;
@@ -252,8 +252,8 @@ namespace SharpCompress.Writers.Zip
}
case ZipCompressionMethod.PPMd:
{
counting.Write(writer.ppmdProperties.Properties, 0, 2);
return new PpmdStream(writer.ppmdProperties, counting, true);
counting.Write(writer.ppmdProperties.Value.Properties, 0, 2);
return new PpmdStream(writer.ppmdProperties.Value, counting, true);
}
default:
{