Source Code added

buildSrc/src/main/kotlin/VersionUtils.kt

@@ -0,0 +1,69 @@
+import org.gradle.api.Project
+import java.util.*
+
+/**
+ * Get the version name from the current environment or use the fallback.
+ * It will look for a environment variable called JELLYFIN_VERSION first.
+ * Next it will look for a property called "jellyfin.version" and lastly it will use the fallback.
+ * If the version in the environment starts with a "v" prefix it will be removed.
+ *
+ * Sample output:
+ * v2.0.0 -> 2.0.0
+ * null -> 0.0.0-dev.1 (unless different fallback set)
+ */
+fun Project.getVersionName(fallback: String = "0.0.0-dev.1"): String {
+    val configuredVersion = System.getenv("JELLYFIN_VERSION")
+        ?: findProperty("jellyfin.version")?.toString()
+
+    return configuredVersion?.removePrefix("v") ?: fallback
+}
+
+/**
+ * Get the version code for a given semantic version.
+ * Does not validate the input and thus will throw an exception when parts are missing.
+ *
+ * The pre-release part ("-rc.1", "-beta.1" etc.) defaults to 99 when not specified.
+ *
+ * Sample output:
+ * MA.MI.PA-PR   > MA MI PA PR
+ * 0.0.0-dev.1   >           1
+ * 0.0.0         >          99
+ * 1.1.1         >  1 01 01 99
+ * 0.7.0         >     7 00 99
+ * 99.99.99      > 99 99 99 99
+ * 2.0.0-rc.3    >  2 00 00 03
+ * 2.0.0         >  2 00 00 99
+ * 99.99.99-rc.1 > 99 99 99 01
+ */
+fun getVersionCode(versionName: String): Int {
+    // Split to core and pre release parts with a default for pre release (null)
+    val (versionCore, versionPreRelease) =
+        when (val index = versionName.indexOf('-')) {
+            // No pre-release part included
+            -1 -> versionName to null
+            // Pre-release part included
+            else -> versionName.substring(0, index) to
+                versionName.substring(index + 1, versionName.length)
+        }
+
+    // Parse core part
+    val (major, minor, patch) = versionCore
+        .splitToSequence('.')
+        .mapNotNull(String::toIntOrNull)
+        .take(3)
+        .toList()
+
+    // Parse pre release part (ignore type, only get the number)
+    val buildVersion = versionPreRelease
+        ?.substringAfter('.')
+        ?.let(String::toIntOrNull)
+
+    // Build code
+    var code = 0
+    code += major * 1000000 // Major (0-99)
+    code += minor * 10000 // Minor (0-99)
+    code += patch * 100 // Patch (0-99)
+    code += buildVersion ?: 99 // Pre release (0-99)
+
+    return code
+}