77 lines
2.1 KiB
Dart
77 lines
2.1 KiB
Dart
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class SemVer {
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static final RegExp _versionMatcher = RegExp(r"^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$");
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static final RegExp _characterFilter = RegExp(r"[a-z]");
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final int major;
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final int minor;
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final int patch;
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SemVer({required this.major, required this.minor, required this.patch});
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factory SemVer.fromString(String str) {
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str = str.replaceAll(_characterFilter, "");
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final match = _versionMatcher.firstMatch(str);
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if (match == null || match.group(1) == null) {
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throw "Invalid version format";
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}
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return SemVer(
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major: int.parse(match.group(1)!),
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minor: int.parse(match.group(2) ?? "0"),
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patch: int.parse(match.group(3) ?? "0"),
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);
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}
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factory SemVer.zero() {
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return SemVer(major: 0, minor: 0, patch: 0);
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}
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factory SemVer.max() {
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//Chosen because it is larger than any version this app will ever see but small enough to not look bad when displayed as text
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const max = 999;
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return SemVer(major: max, minor: max, patch: max);
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}
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bool get isZero => major == 0 && minor == 0 && patch == 0;
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bool get isNotZero => !isZero;
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@override
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String toString() {
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return "$major.$minor.$patch";
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}
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@override
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bool operator ==(Object other) =>
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identical(this, other) ||
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other is SemVer &&
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runtimeType == other.runtimeType &&
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major == other.major &&
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minor == other.minor &&
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patch == other.patch;
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@override
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int get hashCode => major.hashCode ^ minor.hashCode ^ patch.hashCode;
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bool operator >(SemVer other) {
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if (major > other.major || (major == other.major && minor > other.minor) || (major == other.major && minor == other.minor && patch > other.patch)) {
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return true;
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}
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return false;
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}
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bool operator >=(SemVer other) {
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if (this == other) return true;
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return this > other;
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}
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bool operator <(SemVer other) {
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return !(this > other);
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}
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bool operator <=(SemVer other) {
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if (this == other) return true;
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return this < other;
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}
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}
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