private static string getKewords(HTMLchunk[] chunks, Menees.DiffUtils.EditScript edits)
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
//get an iterator for the changes
System.Collections.IEnumerator it = edits.GetEnumerator();
while (it.MoveNext())
{
Menees.DiffUtils.Edit curr = (Menees.DiffUtils.Edit)it.Current;
//append only new text additions to versionB
if (curr.Type == EditType.Insert || curr.Type == EditType.Change)
{
for (int i = 0; i < curr.Length; i++)
{
//append only text changes
if (chunks[curr.StartB + i].oType == HTMLchunkType.Text)
{
sb.Append(" " + chunks[curr.StartB + i].oHTML);
}
}
}
}
return(sb.ToString());
}
private static string getMarkedUpHtml(HTMLchunk[] chunks, Menees.DiffUtils.EditScript edits, bool isOlderVersion)
{
string[] str = new string[chunks.Length];
for (int i = 0; i < str.Length; i++)
{
str[i] = chunks[i].oHTML;
}
//get an iterator for the changes
System.Collections.IEnumerator it = edits.GetEnumerator();
//for now only mark up text nodes!!! this needs improvement
while (it.MoveNext())
{
Menees.DiffUtils.Edit curr = (Menees.DiffUtils.Edit)it.Current;
int start = (isOlderVersion ? curr.StartA : curr.StartB);
switch (curr.Type)
{
case Menees.DiffUtils.EditType.Change:
for (int i = 0; i < curr.Length; i++)
{
if (chunks[start + i].oType == HTMLchunkType.Text)
{
str[start + i] = (isOlderVersion ? Tags.changeDelete : Tags.changeAdd) + str[start + i] + Tags.close;
}
}
break;
case Menees.DiffUtils.EditType.Delete:
//deletes are marked in the older version
if (isOlderVersion)
{
for (int i = 0; i < curr.Length; i++)
{
if (chunks[start + i].oType == HTMLchunkType.Text)
{
str[start + i] = Tags.delete + str[start + i] + Tags.close;
}
}
}
break;
case Menees.DiffUtils.EditType.Insert:
//Inserts are marked in the newer version
if (!isOlderVersion)
{
for (int i = 0; i < curr.Length; i++)
{
if (chunks[start + i].oType == HTMLchunkType.Text)
{
str[start + i] = Tags.add + str[start + i] + Tags.close;
}
}
}
break;
}
}
return(String.Join("", str));
}
private static string getMarkedUpSource(HTMLchunk[] chunks, Menees.DiffUtils.EditScript edits, bool isOlderVersion)
{
string[] str = new string[chunks.Length];
//html encode the source so it wont render
for (int i = 0; i < str.Length; i++)
{
str[i] = System.Web.HttpUtility.HtmlEncode(chunks[i].oHTML);
}
//get an iterator for the changes
System.Collections.IEnumerator it = edits.GetEnumerator();
while (it.MoveNext())
{
Menees.DiffUtils.Edit curr = (Menees.DiffUtils.Edit)it.Current;
int start = (isOlderVersion ? curr.StartA : curr.StartB);
switch (curr.Type)
{
case Menees.DiffUtils.EditType.Change:
//changes are marked as deletes in older version and adds in newer version
str[start] = (isOlderVersion ? Tags.changeDelete : Tags.changeAdd) + str[start];
str[start + curr.Length] += Tags.close;
break;
case Menees.DiffUtils.EditType.Delete:
//deletes are marked in the older version
if (isOlderVersion)
{
str[start] = Tags.delete + str[start];
str[start + curr.Length] += Tags.close;
}
break;
case Menees.DiffUtils.EditType.Insert:
//Inserts are marked in the newer version
if (!isOlderVersion)
{
str[start] = Tags.add + str[start];
str[start + curr.Length] += Tags.close;
}
break;
}
}
return(String.Join("", str));
}