Add support for detecting values from project properties, and global prefix properties.

Author: LexManos

README.md

@@ -43,13 +43,23 @@ You can also configure the task itself to specify any of the information set in
 ### Github Secrets
 A large motivation for this was wanting to use Github Actions and still be able to sign my built files. Github does not allow you to have files as [secrets](https://docs.github.com/en/actions/security-guides/encrypted-secrets) just strings and the workarounds I found involved committing a encrypted form of your keystore to your repo and then decrypting it during an Action. Instead I decided to allow you to specify the keystore file as a base64 encoded string which can be used as a Secret.
 
-You can either manually configure the information by pulling the secrets yourself, or I added a simple helper `jarSigner.fromEnvironmentVariables()` which does the following:
+You can either manually configure the information by pulling the secrets yourself, or I added a simple helper `jarSigner.autoDetect()` which which search the following locations in order:
+
+    if (prefix != null) {
+        project.findProperty(prefix + '.' + prop)
+        System.getenv(prefix + '.' + prop)
+    }
+    project.findProperty(prop)
+    System.getenv(prop)
+`prefix` defaults to `project.name` you can override by calling `jarSigner.autoDetect('prefix')`
+
+For the following properties:
 
     jarSigner {
-        alias = System.env('SIGN_KEY_ALIAS')
-        keyPass = System.env('SIGN_KEY_PASSWORD')
-        storePass = System.env('SIGN_KEYSTORE_PASSWORD')
-        keyStoreData = System.env('SIGN_KEYSTORE_DATA')
+        alias = 'SIGN_KEY_ALIAS'
+        keyPass = 'SIGN_KEY_PASSWORD'
+        storePass = 'SIGN_KEYSTORE_PASSWORD'
+        keyStoreData = 'SIGN_KEYSTORE_DATA'
     }
 
 ### Conclusion

src/main/java/net/minecraftforge/gradlejarsigner/GradleJarSignerExtension.java

@@ -33,10 +33,22 @@ public SignTask sign(Zip task, Closure<SignTask> cfg) {
     }
 
     public void fromEnvironmentVariables() {
-        set("SIGN_KEY_ALIAS", this::setAlias);
-        set("SIGN_KEY_PASSWORD", this::setKeyPass);
-        set("SIGN_KEYSTORE_PASSWORD", this::setStorePass);
-        set("SIGN_KEYSTORE_DATA", this::setKeyStoreData);
+        fromEnvironmentVariables(project.getName());
+    }
+
+    public void fromEnvironmentVariables(String prefix) {
+        autoDetect(prefix);
+    }
+
+    public void autoDetect() {
+        autoDetect(project.getName());
+    }
+
+    public void autoDetect(String prefix) {
+        set(prefix, "SIGN_KEY_ALIAS", this::setAlias);
+        set(prefix, "SIGN_KEY_PASSWORD", this::setKeyPass);
+        set(prefix, "SIGN_KEYSTORE_PASSWORD", this::setStorePass);
+        set(prefix, "SIGN_KEYSTORE_DATA", this::setKeyStoreData);
     }
 
     public void setAlias(String value) {
@@ -77,8 +89,19 @@ void fill(SignTask task) {
             task.setKeyStoreFile(this.keyStoreFile);
     }
 
-    private void set(String key, Consumer<String> prop) {
-        String data = System.getenv(key);
+    private void set(String prefix, String key, Consumer<String> prop) {
+        String data = null;
+        if (prefix != null) {
+            data = (String)project.findProperty(prefix + '.' + key);
+            if (data == null)
+                data = System.getenv(prefix + '.' + key);
+        }
+
+        if (data == null)
+            data = (String)project.findProperty(key);
+        if (data == null)
+            data = System.getenv(key);
+
         if (data != null)
             prop.accept(data);
     }