private static bool TryParse(string versionString, out int major, out int minor, out int patch, out string pre, out string build)
{
major = minor = patch = 0;
pre = build = null;
if (versionString == null)
{
return(false);
}
versionString = versionString.Trim();
if (versionString.Length == 0)
{
return(false);
}
if (versionString[0] == 'v' || versionString[0] == 'V' || versionString[0] == '=')
{
versionString = versionString.Substring(1);
}
if (versionString.Length == 0)
{
return(false);
}
var versionMatch = VersionExpression.Match(versionString);
if (!versionMatch.Success)
{
return(false);
}
var majorMatch = versionMatch.Groups["major"].Value;
var minorMatch = versionMatch.Groups["minor"].Value;
var patchMatch = versionMatch.Groups["patch"].Value;
if (!int.TryParse(majorMatch, NumberStyles.Integer, CultureInfo.InvariantCulture, out major))
{
return(false);
}
if (string.IsNullOrEmpty(minorMatch))
{
minor = 0;
}
else if (!int.TryParse(minorMatch, NumberStyles.Integer, CultureInfo.InvariantCulture, out minor))
{
return(false);
}
if (string.IsNullOrEmpty(patchMatch))
{
patch = 0;
}
else if (!int.TryParse(patchMatch, NumberStyles.Integer, CultureInfo.InvariantCulture, out patch))
{
return(false);
}
pre = versionMatch.Groups["pre"].Value;
build = versionMatch.Groups["build"].Value;
return(true);
}
public static bool TryParse(string versionString, out ComparatorSemanticVersion version)
{
version = null;
if (versionString == null)
{
return(false);
}
versionString = versionString.Trim();
if (versionString.Length == 0)
{
return(false);
}
if (versionString[0] == 'v' || versionString[0] == 'V')
{
versionString = versionString.Substring(1);
}
if (versionString.Length == 0)
{
return(false);
}
var versionMatch = VersionExpression.Match(versionString);
if (!versionMatch.Success)
{
return(false);
}
int?major, patch, minor;
if (!TryParseNumber(versionMatch.Groups["major"].Value, false, out major))
{
return(false);
}
if (!TryParseNumber(versionMatch.Groups["minor"].Value, true, out minor))
{
return(false);
}
if (!TryParseNumber(versionMatch.Groups["patch"].Value, true, out patch))
{
return(false);
}
var pre = versionMatch.Groups["pre"].Value;
version = new ComparatorSemanticVersion(major ?? 0, minor, patch, pre);
return(true);
}
/// <summary>Checks if a given string can be considered a valid <see cref="SemanticVersion" />.</summary> /// <param name="inputString">The string to check for validity.</param> /// <returns>True, if the passed string is a valid <see cref="SemanticVersion" />, otherwise false.</returns> public static bool IsVersion(string inputString) => VersionExpression.IsMatch(inputString);
