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author | Torsten Grote <t@grobox.de> | 2020-07-08 11:56:55 -0300 |
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committer | Torsten Grote <t@grobox.de> | 2020-07-08 11:56:55 -0300 |
commit | 2ee6b0d4cc3871237d24e28d09d2f526d1304da1 (patch) | |
tree | 3efefb0887e6b07c29931a6fca1a5cf8ea8a4841 | |
parent | bdfbb18fe62e93cdabfa779866d8c04a67585145 (diff) | |
download | wallet-kotlin-2ee6b0d4cc3871237d24e28d09d2f526d1304da1.tar.gz wallet-kotlin-2ee6b0d4cc3871237d24e28d09d2f526d1304da1.tar.bz2 wallet-kotlin-2ee6b0d4cc3871237d24e28d09d2f526d1304da1.zip |
Add class to handle libtool-style semantic versioning with test
-rw-r--r-- | src/commonMain/kotlin/net/taler/wallet/kotlin/Version.kt | 71 | ||||
-rw-r--r-- | src/commonTest/kotlin/net/taler/wallet/kotlin/VersionTest.kt | 57 |
2 files changed, 128 insertions, 0 deletions
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") + ) + } + +} |