Allow slashes in branches in the repos.md file (#2297)

Author: fthomas

modules/core/src/main/scala/org/scalasteward/core/application/StewardAlg.scala

@@ -33,7 +33,6 @@ import org.scalasteward.core.vcs.data.Repo
 import org.scalasteward.core.vcs.github.{GitHubApp, GitHubAppApiAlg, GitHubAuthAlg}
 import org.typelevel.log4cats.Logger
 import scala.concurrent.duration._
-import org.scalasteward.core.git.Branch
 
 final class StewardAlg[F[_]](config: Config)(implicit
     dateTimeAlg: DateTimeAlg[F],
@@ -51,18 +50,10 @@ final class StewardAlg[F[_]](config: Config)(implicit
     F: Sync[F]
 ) {
   private def readRepos(reposFile: File): Stream[F, Repo] =
-    Stream.evals[F, List, Repo] {
-      fileAlg.readFile(reposFile).map { maybeContent =>
-        val regex = """-\s+(.+)/([^/]+)""".r
-        val regexWithBranch = """-\s+(.+)/([^/]+):([^/]+)""".r
-        val content = maybeContent.getOrElse("")
-        content.linesIterator.collect {
-          case regexWithBranch(owner, repo, branch) =>
-            Repo(owner.trim, repo.trim, Some(Branch(branch.trim)))
-          case regex(owner, repo) => Repo(owner.trim, repo.trim)
-        }.toList
-      }
-    }
+    Stream
+      .eval(fileAlg.readFile(reposFile).map(_.getOrElse("")))
+      .flatMap(content => Stream.fromIterator(content.linesIterator, 1024))
+      .mapFilter(Repo.parse)
 
   private def getGitHubAppRepos(githubApp: GitHubApp): Stream[F, Repo] =
     Stream.evals[F, List, Repo] {

modules/core/src/main/scala/org/scalasteward/core/vcs/data/Repo.scala

@@ -33,6 +33,16 @@ final case class Repo(
 }
 
 object Repo {
+  def parse(s: String): Option[Repo] = {
+    val regex = """-\s+([^/:]+)/([^/:]+)(:.+)?""".r
+    s match {
+      case regex(owner, repo, branch) =>
+        Some(Repo(owner.trim, repo.trim, Option(branch).map(b => Branch(b.tail.trim))))
+      case _ =>
+        None
+    }
+  }
+
   implicit val repoEq: Eq[Repo] =
     Eq.fromUniversalEquals
 

modules/core/src/test/scala/org/scalasteward/core/vcs/data/RepoTest.scala

@@ -0,0 +1,24 @@
+package org.scalasteward.core.vcs.data
+
+import munit.FunSuite
+import org.scalasteward.core.git.Branch
+
+class RepoTest extends FunSuite {
+  test("parse") {
+    assertEquals(
+      Repo.parse("- typelevel/cats-effect"),
+      Some(Repo("typelevel", "cats-effect", None))
+    )
+    assertEquals(
+      Repo.parse("- typelevel/cats-effect:3.x"),
+      Some(Repo("typelevel", "cats-effect", Some(Branch("3.x"))))
+    )
+    assertEquals(
+      Repo.parse("- typelevel/cats-effect:series/3.x"),
+      Some(Repo("typelevel", "cats-effect", Some(Branch("series/3.x"))))
+    )
+
+    assertEquals(Repo.parse("typelevel/cats-effect"), None)
+    assertEquals(Repo.parse("- typelevel-cats-effect"), None)
+  }
+}