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Use cached encodings

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This commit is contained in:
Frederik Carlier
2018-06-19 13:52:45 +02:00
parent e8112c76b1
commit 23c72a676a
2 changed files with 19 additions and 7 deletions
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10
plist-cil/BinaryPropertyListParser.cs
View File

@@ -44,6 +44,8 @@ namespace Claunia.PropertyList
/// @author Natalia Portillo
public class BinaryPropertyListParser
{
private readonly static Encoding utf16BigEndian = Encoding.GetEncoding("UTF-16BE");
/// <summary>
/// Major version of the property list format
/// </summary>
@@ -290,7 +292,7 @@ namespace Claunia.PropertyList
{
//ASCII String, each character is 1 byte
ReadLengthAndOffset(bytes, objInfo, offset, out int length, out int stroffset);
return new NSString(bytes.Slice(offset + stroffset, length), "ASCII");
return new NSString(bytes.Slice(offset + stroffset, length), Encoding.ASCII);
}
case 0x6:
{
@@ -300,7 +302,7 @@ namespace Claunia.PropertyList
//UTF-16 characters can have variable length, but the Core Foundation reference implementation
//assumes 2 byte characters, thus only covering the Basic Multilingual Plane
length *= 2;
return new NSString(bytes.Slice(offset + stroffset, length), "UTF-16BE");
return new NSString(bytes.Slice(offset + stroffset, length), utf16BigEndian);
}
case 0x7:
{
@@ -310,7 +312,7 @@ namespace Claunia.PropertyList
//UTF-8 characters can have variable length, so we need to calculate the byte length dynamically
//by reading the UTF-8 characters one by one
int length = CalculateUtf8StringLength(bytes, offset + strOffset, characters);
return new NSString(bytes.Slice(offset + strOffset, length), "UTF-8");
return new NSString(bytes.Slice(offset + strOffset, length), Encoding.UTF8);
}
case 0x8:
{
@@ -326,7 +328,7 @@ namespace Claunia.PropertyList
NSArray array = new NSArray(length);
for (int i = 0; i < length; i++)
{
int objRef = (int)ParseUnsignedInt(bytes.Slice(offset + arrayOffset + i * objectRefSize,objectRefSize));
int objRef = (int)ParseUnsignedInt(bytes.Slice(offset + arrayOffset + i * objectRefSize, objectRefSize));
array.Add(ParseObject(bytes, objRef));
}
return array;

16
plist-cil/NSString.cs
View File

@@ -43,12 +43,22 @@ namespace Claunia.PropertyList
/// <param name="encoding">The encoding of the binary representation, the name of a supported charset.</param>
/// <exception cref="ArgumentException">The encoding charset is invalid or not supported by the underlying platform.</exception>
public NSString(ReadOnlySpan<byte> bytes, String encoding)
: this(bytes, Encoding.GetEncoding(encoding))
{
}
/// <summary>
/// Creates a NSString from its binary representation.
/// </summary>
/// <param name="bytes">The binary representation.</param>
/// <param name="encoding">The encoding of the binary representation.</param>
/// <exception cref="ArgumentException">The encoding charset is invalid or not supported by the underlying platform.</exception>
public NSString(ReadOnlySpan<byte> bytes, Encoding encoding)
{
Encoding enc = Encoding.GetEncoding(encoding);
#if NATIVE_SPAN
content = enc.GetString(bytes);
content = encoding.GetString(bytes);
#else
content = enc.GetString(bytes.ToArray());
content = encoding.GetString(bytes.ToArray());
#endif
}