Mega Code Archive
Gets the relative path
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using System;
using System.Collections.Specialized;
using System.Xml;
using System.Text;
using System.Text.RegularExpressions;
namespace RSBuild
{
/// <summary>
/// Utility methods.
/// </summary>
public static class Util
{
/// <summary>
/// Gets the relative path.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="target">The target.</param>
/// <returns></returns>
public static string GetRelativePath(string source, string target)
{
string pathSource = Util.FormatPath(source);
string pathTarget = Util.FormatPath(target);
string[] sourceSegments = null;
string[] targetSegments = null;
int sourceToCommonRoot = 0, targetToCommonRoot = 0;
if (pathSource != "/")
{
sourceSegments = pathSource.Split('/');
sourceToCommonRoot = sourceSegments.GetUpperBound(0);
}
if (pathTarget != "/")
{
targetSegments = pathTarget.Split('/');
targetToCommonRoot = targetSegments.GetUpperBound(0);
}
StringBuilder relativePath = new StringBuilder();
int parentSegments = sourceToCommonRoot;
int i = 1;
while(sourceToCommonRoot >= i && targetToCommonRoot >= i)
{
if (string.Compare(sourceSegments[i], targetSegments[i], true) == 0)
{
parentSegments--;
i++;
}
else
{
break;
}
}
for(int k=0; k<parentSegments; k++)
{
relativePath.Append("../");
}
for(int m=i; m<=targetToCommonRoot; m++)
{
relativePath.AppendFormat("{0}/", targetSegments[m]);
}
return relativePath.ToString();
}
}
}
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