From 7531d14192d457b89045773e1057ee5172f074b3 Mon Sep 17 00:00:00 2001
From: Florian Schrofner <florian@schro.fi>
Date: Fri, 23 Dec 2022 12:00:06 +0100
Subject: [PATCH] add gradle cache extractor

---
 gradle-cache-extractor/gce.clj   | 69 ++++++++++++++++++++++++++++++++
 gradle-cache-extractor/readme.md |  9 +++++
 2 files changed, 78 insertions(+)
 create mode 100755 gradle-cache-extractor/gce.clj
 create mode 100644 gradle-cache-extractor/readme.md

diff --git a/gradle-cache-extractor/gce.clj b/gradle-cache-extractor/gce.clj
new file mode 100755
index 0000000..6831b6d
--- /dev/null
+++ b/gradle-cache-extractor/gce.clj
@@ -0,0 +1,69 @@
+#!/usr/bin/env bb
+
+;;based on: https://github.com/sinsongdev/gradle-cash-to-maven-repo/blob/master/gradle_cache_to_repo.py
+
+(require '[clojure.tools.cli :refer [parse-opts]])
+
+(def cli-options
+  [["-s" "--src DIRECTORY" "Gradle cache directory"
+    :missing "Must provide a source directory"]
+   ["-d" "--dest DIRECTORY" "Maven repository directory"
+    :missing "Must provide a destination directory"]
+   ["-a" "--artifact ARTIFACT" "Artifact id"]])
+
+(def parsed-args (parse-opts *command-line-args* cli-options))
+(def options (:options parsed-args))
+
+(def src (:src options))
+(def dest (:dest options))
+
+(def filter
+  (if-let [filter-option (:artifact options)]
+    (str/split filter-option #":")))
+
+(def group-filter (nth filter 0 nil))
+(def artifact-filter (nth filter 1 nil))
+(def version-filter (nth filter 2 nil))
+
+(defn- create-path-string [& segments]
+  (str/join fs/file-separator segments))
+
+(defn- get-dest-dir-string [group artifact version]
+  (create-path-string
+   dest
+   (str/replace group #"\." fs/file-separator)
+   artifact
+   version))
+
+(defn- process-version [group artifact version]
+  (if (or (nil? version-filter) (= version version-filter))
+    (let [version-dir-string (create-path-string src group artifact version)
+          version-dir (fs/file version-dir-string)
+          hash-dirs (fs/list-dir version-dir)
+          dest-dir-string (get-dest-dir-string group artifact version)]
+      (fs/create-dirs (fs/file dest-dir-string))
+      (doseq [hash-dir hash-dirs
+            file (fs/list-dir hash-dir)]
+        (fs/copy file (fs/file (create-path-string dest-dir-string (fs/file-name file))) {:replace-existing true})))))
+ 
+(defn- process-artifact [group artifact]
+  (if (or (nil? artifact-filter) (= artifact artifact-filter))
+    (let [artifact-dir-string (create-path-string src group artifact)
+          artifact-dir (fs/file artifact-dir-string)]
+      (doseq [version-dir (fs/list-dir artifact-dir)]
+        (process-version group artifact (fs/file-name version-dir))))))
+
+(defn- process-group [group]
+  (if (or (nil? group-filter) (= group group-filter))
+    (let [group-dir-string (create-path-string src group)
+          group-dir (fs/file group-dir-string)]
+      (doseq [artifact-dir (fs/list-dir group-dir)]
+        (process-artifact group (fs/file-name artifact-dir))))))
+
+(defn- process-cache []
+  (doseq [group-dir (fs/list-dir (fs/file src))]
+    (process-group (fs/file-name group-dir))))
+
+(if-let [errors (:errors parsed-args)]
+  (doseq [error errors] (println (str "Error: " error)))
+  (process-cache))
diff --git a/gradle-cache-extractor/readme.md b/gradle-cache-extractor/readme.md
new file mode 100644
index 0000000..2c473f2
--- /dev/null
+++ b/gradle-cache-extractor/readme.md
@@ -0,0 +1,9 @@
+# Gradle Cache Extractor
+Extracts dependencies from your Gradle cache so you can provide them on your self-hosted Maven repository.
+You can optionally provide a dependency with `-a` so only that dependency will be extracted. It's also possible to just specify a group id or artifact id, just leave out the parts you're not interested in.
+
+## Example Usage
+```bash
+./gce.clj -s "/home/schrofi/.gradle/caches/modules-2/files-2.1" -d "/home/schrofi/Documents/maven_repo" -a "org.bitbucket.consentmanager:android-consentmanager:1.3.3"
+
+./gce.clj -s "/home/schrofi/.gradle/caches/modules-2/files-2.1" -d "/home/schrofi/Documents/maven_repo" -a "org.bitbucket.consentmanager:android-consentmanager"