/// <summary>
/// Initializes a new instance of the <see cref="PackageVersionRange" /> class.
/// </summary>
/// <param name="minVersion">The minimum version.</param>
/// <param name="minVersionInclusive">if set to <c>true</c> the minimum version is inclusive</param>
/// <param name="maxVersion">The maximum version.</param>
/// <param name="maxVersionInclusive">if set to <c>true</c> the maximum version is inclusive</param>
public PackageVersionRange(PackageVersion minVersion, bool minVersionInclusive, PackageVersion maxVersion, bool maxVersionInclusive)
{
IsMinInclusive = minVersionInclusive;
IsMaxInclusive = maxVersionInclusive;
MinVersion = minVersion;
MaxVersion = maxVersion;
}
/// <summary>
/// Initializes a new instance of the <see cref="PackageVersionRange"/> class with only one possible version.
/// </summary>
/// <param name="version">The exact version.</param>
public PackageVersionRange(PackageVersion version) : this(version, true, version, true)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="PackageVersionRange" /> class with just a lower bound
/// <paramref name="minVersion"/> that can be inclusive or not depending on <paramref name="minVersionInclusive"/>.
/// </summary>
/// <param name="minVersion">The minimum version.</param>
/// <param name="minVersionInclusive">if set to <c>true</c> the minimum version is inclusive</param>
public PackageVersionRange(PackageVersion minVersion, bool minVersionInclusive)
{
IsMinInclusive = minVersionInclusive;
MinVersion = minVersion;
}
/// <summary>
/// Tries to parse a version dependency.
/// </summary>
/// <param name="value">The version dependency as a string.</param>
/// <param name="result">The parsed result.</param>
/// <returns><c>true</c> if successfuly parsed, <c>false</c> otherwise.</returns>
/// <exception cref="System.ArgumentNullException">value</exception>
public static bool TryParse(string value, out PackageVersionRange result)
{
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
var versionSpec = new PackageVersionRange();
value = value.Trim();
// First, try to parse it as a plain version string
PackageVersion version;
if (PackageVersion.TryParse(value, out version))
{
// A plain version is treated as an inclusive minimum range
result = new PackageVersionRange
{
MinVersion = version,
IsMinInclusive = true,
};
return(true);
}
// It's not a plain version, so it must be using the bracket arithmetic range syntax
result = null;
// Fail early if the string is too short to be valid
if (value.Length < 3)
{
return(false);
}
// The first character must be [ ot (
switch (value.First())
{
case '[':
versionSpec.IsMinInclusive = true;
break;
case '(':
versionSpec.IsMinInclusive = false;
break;
default:
return(false);
}
// The last character must be ] ot )
switch (value.Last())
{
case ']':
versionSpec.IsMaxInclusive = true;
break;
case ')':
versionSpec.IsMaxInclusive = false;
break;
default:
return(false);
}
// Get rid of the two brackets
value = value.Substring(1, value.Length - 2);
// Split by comma, and make sure we don't get more than two pieces
string[] parts = value.Split(',');
if (parts.Length > 2)
{
return(false);
}
if (parts.All(string.IsNullOrEmpty))
{
// If all parts are empty, then neither of upper or lower bounds were specified. Version spec is of the format (,]
return(false);
}
// If there is only one piece, we use it for both min and max
string minVersionString = parts[0];
string maxVersionString = (parts.Length == 2) ? parts[1] : parts[0];
// Only parse the min version if it's non-empty
if (!string.IsNullOrWhiteSpace(minVersionString))
{
if (!PackageVersion.TryParse(minVersionString, out version))
{
return(false);
}
versionSpec.MinVersion = version;
}
// Same deal for max
if (!string.IsNullOrWhiteSpace(maxVersionString))
{
if (!PackageVersion.TryParse(maxVersionString, out version))
{
return(false);
}
versionSpec.MaxVersion = version;
}
// Successful parse!
result = versionSpec;
return(true);
}