1 files changed, 54 insertions, 0 deletions
diff --git a/app/models/packages/sem_ver.rb b/app/models/packages/sem_ver.rb
new file mode 100644
index 00000000000..b73d51b08b7
--- /dev/null
+++ b/app/models/packages/sem_ver.rb
@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+class Packages::SemVer
+  attr_accessor :major, :minor, :patch, :prerelease, :build
+
+  def initialize(major = 0, minor = 0, patch = 0, prerelease = nil, build = nil, prefixed: false)
+    @major = major
+    @minor = minor
+    @patch = patch
+    @prerelease = prerelease
+    @build = build
+    @prefixed = prefixed
+  end
+
+  def prefixed?
+    @prefixed
+  end
+
+  def ==(other)
+    self.class == other.class &&
+    self.major == other.major &&
+    self.minor == other.minor &&
+    self.patch == other.patch &&
+    self.prerelease == other.prerelease &&
+    self.build == other.build
+  end
+
+  def to_s
+    s = "#{prefixed? ? 'v' : ''}#{major || 0}.#{minor || 0}.#{patch || 0}"
+    s += "-#{prerelease}" if prerelease
+    s += "+#{build}" if build
+
+    s
+  end
+
+  def self.match(str, prefixed: false)
+    return unless str&.start_with?('v') == prefixed
+
+    str = str[1..] if prefixed
+
+    Gitlab::Regex.semver_regex.match(str)
+  end
+
+  def self.match?(str, prefixed: false)
+    !match(str, prefixed: prefixed).nil?
+  end
+
+  def self.parse(str, prefixed: false)
+    m = match str, prefixed: prefixed
+    return unless m
+
+    new(m[1].to_i, m[2].to_i, m[3].to_i, m[4], m[5], prefixed: prefixed)
+  end
+end