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data class SnippetData(
val file: File,
val lineNumber: Int,
val content: String,
var tempDir: File? = null
)
fun findSnippets(dirs: List<String>): List<SnippetData> {
val snippets = mutableListOf<SnippetData>()
dirs.forEach { dirName ->
rootProject
.projectDir
.parentFile
.resolve(dirName)
.listFiles()
.filter { it.name.endsWith(".md") }
.forEach { file ->
val currentSnippet = kotlin.text.StringBuilder()
var snippetStart = 0
var lineNumber = 0
file.forEachLine { line ->
lineNumber++
if (line == "```kotlin")
snippetStart = lineNumber + 1
else if (line == "```" && snippetStart != 0) {
snippets.add(SnippetData(file, snippetStart, currentSnippet.toString()))
snippetStart = 0
currentSnippet.clear()
} else {
if (snippetStart != 0) {
currentSnippet.appendln(line)
}
}
}
}
}
return snippets
}
fun cloneTemplate(index: Int, content: String): File {
val tempDir = file("${project.buildDir.absolutePath}/temp/cloned-$index")
tempDir.deleteRecursively()
tempDir.mkdirs()
file("${projectDir.parentFile.parentFile.absolutePath}/templates/desktop-template").copyRecursively(tempDir)
// tempDir.deleteOnExit()
File("$tempDir/src/main/kotlin/main.kt").printWriter().use { out ->
out.println(content)
}
return tempDir
}
fun checkDirs(dirs: List<String>) {
val snippets = findSnippets(dirs)
snippets.forEachIndexed { index, snippet ->
println("process snippet $index at ${snippet.file}:${snippet.lineNumber}")
snippet.tempDir = cloneTemplate(index, snippet.content)
val isWin = System.getProperty("os.name").startsWith("Win")
val procBuilder = if (isWin) {
ProcessBuilder("gradlew.bat", "build")
} else {
ProcessBuilder("bash", "./gradlew", "build")
}
val proc = procBuilder
.directory(snippet.tempDir)
.redirectOutput(ProcessBuilder.Redirect.PIPE)
.redirectError(ProcessBuilder.Redirect.PIPE)
.start()
proc.waitFor(5, TimeUnit.MINUTES)
if (proc.exitValue() != 0) {
println(proc.inputStream.bufferedReader().readText())
println(proc.errorStream.bufferedReader().readText())
throw GradleException("Error in snippet at ${snippet.file}:${snippet.lineNumber}")
}
}
}
// NOTICE: currently we use a bit hacky approach, when "```kotlin" marks code that shall be checked, while "``` kotlin"
// with whitespace marks code that shall not be checked.
tasks.register("check") {
doLast {
val dirs = project
.projectDir
.parentFile
.listFiles()
.filter {
it.isDirectory && it.name[0].isUpperCase() }
.map { it.name }
checkDirs(dirs)
}
}