52 lines
1.6 KiB
Kotlin
52 lines
1.6 KiB
Kotlin
package app.git
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import kotlinx.coroutines.flow.flow
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import java.io.IOException
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import java.nio.file.*
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import java.nio.file.StandardWatchEventKinds.*
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import java.nio.file.attribute.BasicFileAttributes
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import javax.inject.Inject
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class FileChangesWatcher @Inject constructor() {
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suspend fun watchDirectoryPath(pathStr: String, ignoredDirsPath: List<String>) = flow {
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val watchService = FileSystems.getDefault().newWatchService()
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val path = Paths.get(pathStr)
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path.register(
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watchService,
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ENTRY_CREATE,
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ENTRY_DELETE,
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ENTRY_MODIFY
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)
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// register directory and sub-directories
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Files.walkFileTree(path, object : SimpleFileVisitor<Path>() {
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@Throws(IOException::class)
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override fun preVisitDirectory(dir: Path, attrs: BasicFileAttributes): FileVisitResult {
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val isIgnoredDirectory = ignoredDirsPath.any { "$pathStr/$it" == dir.toString() }
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return if(!isIgnoredDirectory) {
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dir.register(watchService, ENTRY_CREATE, ENTRY_DELETE, ENTRY_MODIFY)
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FileVisitResult.CONTINUE
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} else {
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FileVisitResult.SKIP_SUBTREE
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}
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}
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})
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var key: WatchKey
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while (watchService.take().also { key = it } != null) {
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this.emit(Unit)
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for (event: WatchEvent<*> in key.pollEvents()) {
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println(
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"Event kind:" + event.kind()
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+ ". File affected: " + event.context() + "."
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)
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}
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key.reset()
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}
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}
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} |