Coverage Summary for Class: UrlScanner (io.heapy.kotmark.autolink.internal)

 // Port of autolink-java 0.12.0. Copyright (c) 2015 Robin Stocker. MIT; see UPSTREAM.md.
 package io.heapy.kotmark.autolink.internal
 
 import io.heapy.kotmark.autolink.LinkSpan
 import io.heapy.kotmark.autolink.LinkType
 
 internal class UrlScanner : Scanner {
     override fun scan(input: CharSequence, triggerIndex: Int, rewindIndex: Int): LinkSpan? {
         val afterSlashSlash = triggerIndex + 3
         if (afterSlashSlash >= input.length || input[triggerIndex + 1] != '/' || input[triggerIndex + 2] != '/') return null
         val first = findFirst(input, triggerIndex - 1, rewindIndex)
         if (first == -1) return null
         val last = Scanners.findUrlEnd(input, afterSlashSlash)
         return if (last == -1) null else LinkSpanImpl(LinkType.URL, first, last + 1)
     }
 
     private fun findFirst(input: CharSequence, beginIndex: Int, rewindIndex: Int): Int {
         var first = -1
         var digit = -1
         for (i in beginIndex downTo rewindIndex) {
             val c = input[i]
             when {
                 Scanners.isAlpha(c) -> first = i
                 Scanners.isDigit(c) -> digit = i
                 c != '+' && c != '-' && c != '.' -> break
             }
         }
         // Do not extract abc://foo from 1abc://foo; leading punctuation is allowed.
         return if (first > 0 && first - 1 == digit) -1 else first
     }
 }