Kotlin conversion: VersionExternal

external-sop/src/main/kotlin/sop/external/operation/VersionExternal.kt

@@ -0,0 +1,98 @@
+// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.external.operation
+
+import java.io.IOException
+import java.util.Properties
+import sop.external.ExternalSOP
+import sop.operation.Version
+
+/** Implementation of the [Version] operation using an external SOP binary. */
+class VersionExternal(binary: String, environment: Properties) : Version {
+
+    private val commandList = listOf(binary, "version")
+    private val envList = ExternalSOP.propertiesToEnv(environment)
+
+    override fun getName(): String {
+        val info = executeForLine(commandList)
+        return if (info.contains(" ")) {
+            info.substring(0, info.lastIndexOf(" "))
+        } else {
+            info
+        }
+    }
+
+    override fun getVersion(): String {
+        val info = executeForLine(commandList)
+        return if (info.contains(" ")) {
+            info.substring(info.lastIndexOf(" ") + 1)
+        } else {
+            info
+        }
+    }
+
+    override fun getBackendVersion(): String {
+        return executeForLines(commandList.plus("--backend"))
+    }
+
+    override fun getExtendedVersion(): String {
+        return executeForLines(commandList.plus("--extended"))
+    }
+
+    override fun getSopSpecRevisionNumber(): Int {
+        val revision = getSopSpecVersion()
+        val firstLine =
+            if (revision.contains("\n")) {
+                revision.substring(0, revision.indexOf("\n"))
+            } else {
+                revision
+            }
+
+        if (!firstLine.contains("-")) {
+            return -1
+        }
+        return Integer.parseInt(firstLine.substring(firstLine.lastIndexOf("-") + 1))
+    }
+
+    override fun isSopSpecImplementationIncomplete(): Boolean {
+        return getSopSpecVersion().startsWith("~")
+    }
+
+    override fun getSopSpecImplementationRemarks(): String? {
+        val revision = getSopSpecVersion()
+        if (revision.contains("\n")) {
+            revision.substring(revision.indexOf("\n")).trim().takeIf { it.isNotBlank() }
+        }
+        return null
+    }
+
+    override fun getSopSpecVersion(): String {
+        return executeForLines(commandList.plus("--sop-spec"))
+    }
+
+    private fun executeForLine(commandList: List<String>): String {
+        return try {
+            val process =
+                Runtime.getRuntime().exec(commandList.toTypedArray(), envList.toTypedArray())
+            val result = process.inputStream.bufferedReader().readLine()
+            ExternalSOP.finish(process)
+            result.trim()
+        } catch (e: IOException) {
+            throw RuntimeException(e)
+        }
+    }
+
+    private fun executeForLines(commandList: List<String>): String {
+        return try {
+            val process =
+                Runtime.getRuntime().exec(commandList.toTypedArray(), envList.toTypedArray())
+            val result = process.inputStream.bufferedReader().readLines().joinToString("\n")
+            ExternalSOP.finish(process)
+            result.trim()
+        } catch (e: IOException) {
+            throw RuntimeException(e)
+        }
+    }
+}