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[taler-wallet-kotlin] 01/02: Add class to handle libtool-style semantic
From: |
gnunet |
Subject: |
[taler-wallet-kotlin] 01/02: Add class to handle libtool-style semantic versioning with test |
Date: |
Thu, 09 Jul 2020 21:10:19 +0200 |
This is an automated email from the git hooks/post-receive script.
torsten-grote pushed a commit to branch master
in repository wallet-kotlin.
commit 2ee6b0d4cc3871237d24e28d09d2f526d1304da1
Author: Torsten Grote <t@grobox.de>
AuthorDate: Wed Jul 8 11:56:55 2020 -0300
Add class to handle libtool-style semantic versioning with test
---
.../kotlin/net/taler/wallet/kotlin/Version.kt | 71 ++++++++++++++++++++++
.../kotlin/net/taler/wallet/kotlin/VersionTest.kt | 57 +++++++++++++++++
2 files changed, 128 insertions(+)
diff --git a/src/commonMain/kotlin/net/taler/wallet/kotlin/Version.kt
b/src/commonMain/kotlin/net/taler/wallet/kotlin/Version.kt
new file mode 100644
index 0000000..457fb07
--- /dev/null
+++ b/src/commonMain/kotlin/net/taler/wallet/kotlin/Version.kt
@@ -0,0 +1,71 @@
+/*
+ * This file is part of GNU Taler
+ * (C) 2020 Taler Systems S.A.
+ *
+ * GNU Taler is free software; you can redistribute it and/or modify it under
the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 3, or (at your option) any later version.
+ *
+ * GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR
+ * A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
+ */
+
+package net.taler.wallet.kotlin
+
+import kotlin.math.sign
+
+/**
+ * Semantic versioning, but libtool-style.
+ * See
https://www.gnu.org/software/libtool/manual/html_node/Libtool-versioning.html
+ */
+
+/**
+ * Result of comparing two libtool versions.
+ */
+data class VersionMatchResult(
+ /**
+ * Is the first version compatible with the second?
+ */
+ val compatible: Boolean,
+ /**
+ * Is the first version older (-1), newer (+1) or identical (0)?
+ */
+ val currentCmp: Int
+)
+
+data class Version(
+ val current: Int,
+ val revision: Int,
+ val age: Int
+)
+
+/**
+ * Compare two libtool-style version strings.
+ */
+fun compareVersions(me: String,other: String): VersionMatchResult? {
+ val meVer = parseVersion (me)
+ val otherVer = parseVersion (other)
+ if (meVer == null || otherVer == null) return null
+
+ val compatible = meVer.current - meVer.age <= otherVer.current &&
+ meVer.current >= otherVer.current - otherVer.age
+
+ val currentCmp = sign((meVer.current -
otherVer.current).toDouble()).toInt()
+
+ return VersionMatchResult(compatible, currentCmp)
+}
+
+fun parseVersion(v: String): Version? {
+ val elements = v.split(":")
+ if (elements.size != 3) return null
+ val (currentStr, revisionStr, ageStr) = elements
+ val current = currentStr.toIntOrNull()
+ val revision = revisionStr.toIntOrNull()
+ val age = ageStr.toIntOrNull()
+ if (current == null || revision == null || age == null) return null
+ return Version(current, revision, age)
+}
diff --git a/src/commonTest/kotlin/net/taler/wallet/kotlin/VersionTest.kt
b/src/commonTest/kotlin/net/taler/wallet/kotlin/VersionTest.kt
new file mode 100644
index 0000000..d445ebc
--- /dev/null
+++ b/src/commonTest/kotlin/net/taler/wallet/kotlin/VersionTest.kt
@@ -0,0 +1,57 @@
+/*
+ * This file is part of GNU Taler
+ * (C) 2020 Taler Systems S.A.
+ *
+ * GNU Taler is free software; you can redistribute it and/or modify it under
the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 3, or (at your option) any later version.
+ *
+ * GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR
+ * A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
+ */
+
+package net.taler.wallet.kotlin
+
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertNull
+
+class VersionTest {
+
+ @Test
+ fun testComparision() {
+ assertNull(compareVersions("0:0:0", ""))
+ assertNull(compareVersions("", "0:0:0"))
+ assertNull(compareVersions("foo", "0:0:0"))
+ assertNull(compareVersions("0:0:0", "foo"))
+ assertEquals(
+ VersionMatchResult(true, 0),
+ compareVersions("0:0:0", "0:0:0")
+ )
+ assertEquals(
+ VersionMatchResult(true, -1),
+ compareVersions("0:0:0", "1:0:1")
+ )
+ assertEquals(
+ VersionMatchResult(true, -1),
+ compareVersions("0:0:0", "1:5:1")
+ )
+ assertEquals(
+ VersionMatchResult(false, -1),
+ compareVersions("0:0:0", "1:5:0")
+ )
+ assertEquals(
+ VersionMatchResult(false, 1),
+ compareVersions("1:0:0", "0:5:0")
+ )
+ assertEquals(
+ VersionMatchResult(true, 0),
+ compareVersions("1:0:1", "1:5:1")
+ )
+ }
+
+}
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