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Add Mixed Case options for byte strings.

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This commit is contained in:
Ottermandias 2022-10-07 13:00:46 +02:00
parent d6d4a0db4c
commit b3f048bfe6
2 changed files with 39 additions and 1 deletions
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12
Penumbra.GameData/ByteString/ByteStringFunctions.Case.cs
View file

@ -9,6 +9,10 @@ public static unsafe partial class ByteStringFunctions
.Select( i => ( byte )char.ToLowerInvariant( ( char )i ) )
.ToArray();
private static readonly byte[] AsciiUpperCaseBytes = Enumerable.Range( 0, 256 )
.Select( i => ( byte )char.ToUpperInvariant( ( char )i ) )
.ToArray();
// Convert a byte to its ASCII-lowercase version.
public static byte AsciiToLower( byte b )
=> AsciiLowerCaseBytes[ b ];
@ -17,6 +21,14 @@ public static unsafe partial class ByteStringFunctions
public static bool AsciiIsLower( byte b )
=> AsciiToLower( b ) == b;
// Convert a byte to its ASCII-uppercase version.
public static byte AsciiToUpper( byte b )
=> AsciiUpperCaseBytes[ b ];
// Check if a byte is ASCII-uppercase.
public static bool AsciiIsUpper( byte b )
=> AsciiToUpper( b ) == b;
// Check if a byte array of given length is ASCII-lowercase.
public static bool IsAsciiLowerCase( byte* path, int length )
{

28
Penumbra.GameData/ByteString/Utf8String.Manipulation.cs
View file

@ -25,6 +25,32 @@ public sealed unsafe partial class Utf8String
? new Utf8String().Setup( ByteStringFunctions.AsciiToLower( _path, Length ), Length, null, true, true, true, IsAsciiInternal )
: this;
// Convert the ascii portion of the string to mixed case (i.e. capitalize every first letter in a word)
// Clones the string.
public Utf8String AsciiToMixed()
{
var length = Length;
if( length == 0 )
{
return Empty;
}
var ret = Clone();
var previousWhitespace = true;
var end = ret.Path + length;
for( var ptr = ret.Path; ptr < end; ++ptr )
{
if( previousWhitespace )
{
*ptr = ByteStringFunctions.AsciiToUpper( *ptr );
}
previousWhitespace = char.IsWhiteSpace( ( char )*ptr );
}
return ret;
}
// Convert the ascii portion of the string to lowercase.
// Guaranteed to create an owned copy.
public Utf8String AsciiToLowerClone()
@ -37,7 +63,7 @@ public sealed unsafe partial class Utf8String
{
var ret = new Utf8String();
ret._length = _length | OwnedFlag | NullTerminatedFlag;
ret._path = ByteStringFunctions.CopyString(Path, Length);
ret._path = ByteStringFunctions.CopyString( Path, Length );
ret._crc32 = Crc32;
return ret;
}