diff options
Diffstat (limited to 'core/src/main/scala/com/rockymadden/stringmetric/transform.scala')
-rw-r--r-- | core/src/main/scala/com/rockymadden/stringmetric/transform.scala | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/core/src/main/scala/com/rockymadden/stringmetric/transform.scala b/core/src/main/scala/com/rockymadden/stringmetric/transform.scala new file mode 100644 index 0000000..c3c5afc --- /dev/null +++ b/core/src/main/scala/com/rockymadden/stringmetric/transform.scala @@ -0,0 +1,66 @@ +package com.rockymadden.stringmetric + +import scala.collection.immutable.NumericRange + +trait transform { + private val Ascii = NumericRange(0x00, 0x7F, 1) + private val ExtendedAscii = NumericRange(0x00, 0x7F, 1) + private val Latin = NumericRange(0x00, 0x24F, 1) + private val LowerCase = NumericRange(0x61, 0x7A, 1) + private val Numbers = NumericRange(0x30, 0x39, 1) + private val UpperCase = NumericRange(0x41, 0x5A, 1) + + private val filter: ((Array[Char], (Char => Boolean)) => String) = (ca, f) => + ca.filter(c => f(c)).mkString + + private val filterNot: ((Array[Char], (Char => Boolean)) => String) = (ca, f) => + ca.filterNot(c => f(c)).mkString + + val filterAlpha: StringTransform = (ca) => filter(ca, c => { + val ci = c.toInt + LowerCase.contains(ci) || UpperCase.contains(ci) + }) + + val filterNotAlpha: StringTransform = (ca) => filterNot(ca, c => { + val ci = c.toInt + LowerCase.contains(ci) || UpperCase.contains(ci) + }) + + val filterAlphaNumeric: StringTransform = (ca) => filter(ca, c => { + val ci = c.toInt + LowerCase.contains(ci) || UpperCase.contains(ci) || Numbers.contains(ci) + }) + + val filterNotAlphaNumeric: StringTransform = (ca) => filterNot(ca, c => { + val ci = c.toInt + LowerCase.contains(ci) || UpperCase.contains(ci) || Numbers.contains(ci) + }) + + val filterAscii: StringTransform = (ca) => filter(ca, c => Ascii.contains(c.toInt)) + + val filterNotAscii: StringTransform = (ca) => filterNot(ca, c => Ascii.contains(c.toInt)) + + val filterExtendedAscii: StringTransform = (ca) => filter(ca, c => ExtendedAscii.contains(c.toInt)) + + val filterNotExtendedAscii: StringTransform = (ca) => filterNot(ca, c => ExtendedAscii.contains(c.toInt)) + + val filterLatin: StringTransform = (ca) => filter(ca, c => Latin.contains(c.toInt)) + + val filterNotLatin: StringTransform = (ca) => filterNot(ca, c => Latin.contains(c.toInt)) + + val filterLowerCase: StringTransform = (ca) => filter(ca, c => LowerCase.contains(c.toInt)) + + val filterNotLowerCase: StringTransform = (ca) => filterNot(ca, c => LowerCase.contains(c.toInt)) + + val filterNumeric: StringTransform = (ca) => filter(ca, c => Numbers.contains(c.toInt)) + + val filterNotNumeric: StringTransform = (ca) => filterNot(ca, c => Numbers.contains(c.toInt)) + + val filterUpperCase: StringTransform = (ca) => filter(ca, c => UpperCase.contains(c.toInt)) + + val filterNotUpperCase: StringTransform = (ca) => filterNot(ca, c => UpperCase.contains(c.toInt)) + + val ignoreAlphaCase: StringTransform = (ca) => ca.map(c => if (c >= 65 && c <= 90) (c + 32).toChar else c) +} + +object transform extends transform |