diff options
Diffstat (limited to 'src/main/scala/xyz/driver/pdsuicommon/utils/CharOps.scala')
-rw-r--r-- | src/main/scala/xyz/driver/pdsuicommon/utils/CharOps.scala | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/main/scala/xyz/driver/pdsuicommon/utils/CharOps.scala b/src/main/scala/xyz/driver/pdsuicommon/utils/CharOps.scala new file mode 100644 index 0000000..42bf92d --- /dev/null +++ b/src/main/scala/xyz/driver/pdsuicommon/utils/CharOps.scala @@ -0,0 +1,31 @@ +package xyz.driver.pdsuicommon.utils + +final class CharOps(val self: Char) extends AnyVal { + + import CharOps._ + + def isSafeWhitespace: Boolean = Whitespace.matches(self) + + def isSafeControl: Boolean = JavaIsoControl.matches(self) +} + +// From Guava +private object CharOps { + + object Whitespace { + private val Table: String = + "\u2002\u3000\r\u0085\u200A\u2005\u2000\u3000" + + "\u2029\u000B\u3000\u2008\u2003\u205F\u3000\u1680" + + "\u0009\u0020\u2006\u2001\u202F\u00A0\u000C\u2009" + + "\u3000\u2004\u3000\u3000\u2028\n\u2007\u3000" + + private val Multiplier: Int = 1682554634 + private val Shift: Int = Integer.numberOfLeadingZeros(Table.length - 1) + + def matches(c: Char): Boolean = Table.charAt((Multiplier * c) >>> Shift) == c + } + + object JavaIsoControl { + def matches(c: Char): Boolean = c <= '\u001f' || (c >= '\u007f' && c <= '\u009f') + } +} |