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package com.rockymadden.stringmetric.cli.similarity
import com.rockymadden.stringmetric.cli._
import com.rockymadden.stringmetric.similarity.WeightedLevenshteinMetric
case object weightedlevenshteinmetric extends Command(
(opts) =>
"Compares the number of characters that two strings are different from one another via insertion, deletion, " +
"and substitution. Allows the invoker to indicate the weight each operation takes." + Ls + Ls +
"Syntax:" + Ls +
Tab + "weightedlevenshteinmetric [Options] --deleteWeight=[double] --insertWeight=[double] --substituteWeight=[double] string1 string2..." + Ls + Ls +
"Options:" + Ls +
Tab + "--deleteWeight" + Ls +
Tab + Tab + "The weight given to delete operations." +
Tab + "-h, --help" + Ls +
Tab + Tab + "Outputs description, syntax, and opts." +
Tab + "--insertWeight" + Ls +
Tab + Tab + "The weight given to insert operations." +
Tab + "--substituteWeight" + Ls +
Tab + Tab + "The weight given to substitute operations.",
(opts) => opts.contains('dashless) && (opts('dashless): Array[String]).length == 2 &&
opts.contains('deleteWeight) && (opts('deleteWeight): Double) >= 0 &&
opts.contains('insertWeight) && (opts('insertWeight): Double) >= 0 &&
opts.contains('substituteWeight) && (opts('substituteWeight): Double) >= 0,
(opts) => {
val strings: Array[String] = opts('dashless)
WeightedLevenshteinMetric(opts('deleteWeight), opts('insertWeight), opts('substituteWeight))
.compare(strings(0), strings(1))
.map(_.toString)
.getOrElse("not comparable")
}
)
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