ReadMeMaker

ReadMeMaker.kt

package com.uchidev.kotlin_ex.app2

import java.io.BufferedReader
import java.io.InputStreamReader
import com.uchidev.kotlin_ex.tool.DirNode

class ReadMeMaker(node: DirNode) {
    val dirNode = node

    fun process() {
        dirNode.updateContentNode("README.md", buildReadMeContent())
        dirNode.eachChildrenDirNode { dir ->
            ReadMeMaker(dir).process()
        }
    }

    private fun buildReadMeContent() : CharSequence {
        val readMeContent = StringBuilder()

        dirNode.onContent("index.md") { bodyReader: InputStreamReader? ->
            if (bodyReader != null) {
                val br = BufferedReader(bodyReader)
                val line = br.readLine()
                // if (line == "# *.")
                readMeContent.append(line)
            } else {
                readMeContent.append("# ").append(dirNode.getDirName())
            }
        }

        dirNode.eachContentNode { name, bodyReader ->
            readMeContent.append(name)
            readMeContent.append(bodyReader.readLines())
        }

        return readMeContent
    }
}

DirNode.kt

package com.uchidev.kotlin_ex.tool

import java.io.Closeable
import java.io.InputStreamReader

interface DirNode: Closeable {
    fun getDirName(): CharSequence
    fun onContent(name: CharSequence, operation: (bodyReader: InputStreamReader?) -> Unit)
    fun eachContentNode(operation: ((name: CharSequence, bodyReader: InputStreamReader) -> Unit))
    fun eachChildrenDirNode(operation: ((DirNode) -> Unit))
    fun updateContentNode(contentName: CharSequence, contentBuffer: CharSequence)
}