Verify FSEntry name
Test Workflow / Lint and test library (pull_request) Successful in 1m42s Details

This commit is contained in:
Gleb Koval 2024-01-05 17:45:35 +00:00
parent 726980a669
commit e7dd3fa073
Signed by: cyclane
GPG Key ID: 15E168A8B332382C
2 changed files with 20 additions and 6 deletions

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@ -1,8 +1,10 @@
package filesystem
import java.nio.file.FileAlreadyExistsException
import java.nio.file.Files
import java.nio.file.Path
import kotlin.io.path.createDirectory
import kotlin.io.path.createFile
import kotlin.io.path.writeText
class FSCreator {
/**
@ -31,13 +33,13 @@ class FSCreator {
val path = dest.resolve(entry.name)
try {
when (entry) {
is FSFile -> Files.createFile(path)
is FSFolder -> Files.createDirectory(path)
is FSFile -> path.createFile()
is FSFolder -> path.createDirectory()
}
} catch (_: FileAlreadyExistsException) {
} // Allow files/folders to already exist.
when (entry) {
is FSFile -> Files.write(path, entry.content.toByteArray())
is FSFile -> path.writeText(entry.content)
is FSFolder -> queue.addAll(entry.entries.map { it to path })
}
}

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@ -1,8 +1,18 @@
package filesystem
import kotlin.io.path.Path
// Note sealed allows for simpler logic in FSCreator by guaranteeing FSFile and FSFolder are the only possible FSEntries
// (as we expect), and it also implicitly makes the class abstract as required.
sealed class FSEntry(val name: String)
sealed class FSEntry(val name: String) {
init {
val p = Path(name)
// Only allow single filenames (no paths or relative references (e.g. ".."))
if (p.toList().size != 1 || p.fileName != p.toFile().canonicalFile.toPath().fileName) {
throw InvalidEntryNameException(name)
}
}
}
class FSFile(name: String, val content: String) : FSEntry(name)
@ -25,3 +35,5 @@ class FSFolder(name: String, val entries: List<FSEntry>) : FSEntry(name) {
return false
}
}
class InvalidEntryNameException(name: String) : Exception("Invalid FSEntry name: '$name'")