88 lines
2.6 KiB
C#
88 lines
2.6 KiB
C#
// Copyright (c) Umbraco.
|
|
// See LICENSE for more details.
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Globalization;
|
|
using Umbraco.Cms.Core.Semver;
|
|
|
|
namespace Umbraco.Extensions
|
|
{
|
|
public static class VersionExtensions
|
|
{
|
|
public static Version GetVersion(this SemVersion semVersion, int maxParts = 4)
|
|
{
|
|
int build = 0;
|
|
int.TryParse(semVersion.Build, NumberStyles.Integer, CultureInfo.InvariantCulture, out build);
|
|
|
|
if (maxParts >= 4)
|
|
{
|
|
return new Version(semVersion.Major, semVersion.Minor, semVersion.Patch, build);
|
|
}
|
|
if (maxParts == 3)
|
|
{
|
|
return new Version(semVersion.Major, semVersion.Minor, semVersion.Patch);
|
|
}
|
|
|
|
return new Version(semVersion.Major, semVersion.Minor);
|
|
}
|
|
|
|
public static Version SubtractRevision(this Version version)
|
|
{
|
|
var parts = new List<int>(new[] {version.Major, version.Minor, version.Build, version.Revision});
|
|
|
|
//remove all prefixed zero parts
|
|
while (parts[0] <= 0)
|
|
{
|
|
parts.RemoveAt(0);
|
|
if (parts.Count == 0) break;
|
|
}
|
|
|
|
for (int index = 0; index < parts.Count; index++)
|
|
{
|
|
var part = parts[index];
|
|
if (part <= 0)
|
|
{
|
|
parts.RemoveAt(index);
|
|
index++;
|
|
}
|
|
else
|
|
{
|
|
//break when there isn't a zero part
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (parts.Count == 0) throw new InvalidOperationException("Cannot subtract a revision from a zero version");
|
|
|
|
var lastNonZero = parts.FindLastIndex(i => i > 0);
|
|
|
|
//subtract 1 from the last non-zero
|
|
parts[lastNonZero] = parts[lastNonZero] - 1;
|
|
|
|
//the last non zero is actually the revision so we can just return
|
|
if (lastNonZero == (parts.Count -1))
|
|
{
|
|
return FromList(parts);
|
|
}
|
|
|
|
//the last non zero isn't the revision so the remaining zero's need to be replaced with int.max
|
|
for (var i = lastNonZero + 1; i < parts.Count; i++)
|
|
{
|
|
parts[i] = int.MaxValue;
|
|
}
|
|
|
|
return FromList(parts);
|
|
}
|
|
|
|
private static Version FromList(IList<int> parts)
|
|
{
|
|
while (parts.Count < 4)
|
|
{
|
|
parts.Insert(0, 0);
|
|
}
|
|
return new Version(parts[0], parts[1], parts[2], parts[3]);
|
|
}
|
|
}
|
|
}
|