/// <summary>
/// Construct a new semantic version from a version string.
/// </summary>
/// <param name="input">The version string.</param>
/// <param name="loose">When true, be more forgiving of some invalid version specifications.</param>
/// <exception cref="System.ArgumentException">Thrown when the version string is invalid.</exception>
public Version(string input, bool loose = false)
{
_inputString = input;
var regex = loose ? looseRegex : strictRegex;
var match = regex.Match(input);
if (!match.Success)
{
throw new ArgumentException($"Invalid version string: {input}");
}
Major = Int32.Parse(match.Groups[1].Value);
Minor = Int32.Parse(match.Groups[2].Value);
Patch = Int32.Parse(match.Groups[3].Value);
if (match.Groups[4].Success)
{
var inputPreRelease = match.Groups[5].Value;
var cleanedPreRelease = PreReleaseVersion.Clean(inputPreRelease);
if (!loose && inputPreRelease != cleanedPreRelease)
{
throw new ArgumentException($"Invalid pre-release version: {inputPreRelease}");
}
PreRelease = cleanedPreRelease;
}
if (match.Groups[6].Success)
{
Build = match.Groups[7].Value;
}
}
/// <summary>
/// Return a cleaned, normalised version string.
/// </summary>
/// <returns>The cleaned version string.</returns>
public string Clean()
{
var preReleaseString = PreRelease == null ? ""
: $"-{PreReleaseVersion.Clean(PreRelease)}";
var buildString = Build == null ? ""
: $"+{Build}";
return($"{Major}.{Minor}.{Patch}{preReleaseString}{buildString}");
}
// Implement IComparable<Version>
public int CompareTo(Version other)
{
if (ReferenceEquals(other, null))
{
return(1);
}
foreach (var c in PartComparisons(other))
{
if (c != 0)
{
return(c);
}
}
return(PreReleaseVersion.Compare(this.PreRelease, other.PreRelease));
}