JGit Usage in Kotlin

JGit.kt

package info.usmans.blog.vertx

import org.eclipse.jgit.api.Git
import org.eclipse.jgit.revwalk.RevCommit
import org.eclipse.jgit.transport.UsernamePasswordCredentialsProvider
import java.io.File

internal const val GIST_REPO_URL = "https://gist.github.com/someid.git"

fun gitCredentialProvider(gistToken: String = System.getenv("GITHUB_GIST_TOKEN")) = UsernamePasswordCredentialsProvider(gistToken, "")

fun checkoutGist(gistUrl: String = GIST_REPO_URL): File {
    val tmpDir = createTempDir()
    Git.cloneRepository().
            setURI(gistUrl).
            setDirectory(tmpDir).
            call().use {
                println("Git cloned at: $tmpDir")
            }
    return tmpDir
}

fun commitGist(checkoutDir: File, msg:String="commit from jgit"): RevCommit {
    //open existing repo and commit and push data.json
    return Git.open(File(checkoutDir, ".git")).use {
        it.add().addFilepattern("data.json").call()
        it.commit().setMessage(msg).call()
    }
}

fun pushGist(checkoutDir: File, credentialProvider: UsernamePasswordCredentialsProvider = gitCredentialProvider()) {
    //open existing repo and commit and push data.json
    Git.open(File(checkoutDir, ".git")).use {
        it.push().setCredentialsProvider(credentialProvider).call()
    }
}

Which Kotlin version is this? I think this is weird:

.use {
                println("Git cloned at: $tmpDir")
}

Did you mean let?

In Kotlin, use can be called on a Closeable? resource to execute a block on the resource and then close it neatly. It's the Kotlin way to do a try-with-resources statement.

Hi, Can you please tell me how to use this code using git ssh keys instead of token. And the dependencies for gradle.