// This functions takes a newer version of this document, and merges it with this one
// acording to "Simple Merge Policy" given in slice-of-pie.pdf.
// It also updated all other fields in the document according to the new version
// and generates a log based on the changes.
// MergeWith returns a bool as well, it returns false if the ID of the updated
// document is not the same as this documents ID, otherwise it returns true
public bool MergeWith(Document doc, User user)
{
if (this.id != doc.id)
return false;
List<string> changes = new List<string>();
// Create original and latest arrays. ( step 1 )
string[] original = this.GetTextAsArray();
string[] latest = doc.GetTextAsArray();
// Create merged array ( made as a list instead ). ( step 2 )
List<string> merged = new List<string>();
// Definer o and n index, which point to lines in the original and latest arrays. ( step 3 )
int o = 0;
int n = 0;
bool done = false;
Console.Out.WriteLine("Started merge.");
// While loop that continues untill the end of both versions of the document have been reached.
while (!done)
{
Console.Out.WriteLine("New round in while loop");
// All remaining lines in latest are new. ( step 4 )
if ((o == original.Length) && (n != latest.Length))
{
Console.Out.WriteLine("Step 4");
for (int N=n; N < latest.Length; N++)
{
changes.Add("+L"+N+": "+latest[N]);
merged.Add(latest[N]);
n++;
}
}
// All remaining lines in original have been removed. ( step 5 )
else if ((o != original.Length) && (n == latest.Length))
{
Console.Out.WriteLine("Step 5");
for (int O=o; O < original.Length; O++)
{
changes.Add("-L"+O+": "+original[O]);
}
o = original.Length;
}
// No changes have occured in this line ( step 6 )
else if (String.Compare(original[o], latest[n]) == 0)
{
Console.Out.WriteLine("Step 6");
merged.Add(original[o]);
n++;
o++;
}
else if (String.Compare(original[o], latest[n]) != 0)
{
List<string> temp = new List<string>();
bool found = false;
int t = 0;
for (int N = n; N < latest.Length; N++)
{
temp.Add(latest[N]);
if (String.Compare(original[o], latest[N]) == 0)
{
found = true;
t = N;
break;
}
}
// Line has been removed ( Step 7.b )
if (found == false)
{
Console.Out.WriteLine("Step 7.b");
changes.Add("-L"+o+": "+original[o]);
o++;
}
// All lines in between have been added ( step 7.c )
else
{
Console.Out.WriteLine("Step 7.c");
int counter = 0;
foreach (string s in temp)
{
if (!(counter == temp.Count-1))
changes.Add("+L"+n+": "+latest[n]);
merged.Add(s);
n++;
counter++;
}
o++;
n = t + 1;
}
}
if (((o == original.Length) && (n == latest.Length)))
{
done = true;
}
}
Console.Out.WriteLine("Merge complete");
StringBuilder newTextBuilder = new StringBuilder();
for (int i = 0; i < merged.Count; i++)
{
if (!(i == merged.Count-1))
newTextBuilder.AppendFormat(merged[i] + "\n");
else
newTextBuilder.AppendFormat(merged[i]);
}
text = newTextBuilder.ToString();
// Check and see if the document has been marked for deletion
this.deleted = doc.deleted;
// A log that will document what changes have been made to the document.
List<string> changeLog = new List<string>();
bool titleChanged = false;
bool pathChanged = false;
bool textChanged = (!(changes.Count==0));
bool picturesAdded = false;
bool picturesRemoved = false;
List<Picture> imagesAdded = new List<Picture>();
List<Picture> imagesRemoved = new List<Picture>();
// Has title been changed?
if (String.Compare(doc.Title, this.Title) != 0)
{
changeLog.Add("Title has been changed from '" + this.Title + "' to '" + doc.Title + "'");
this.title = doc.Title;
titleChanged = true;
}
// Has path been changed?
if (String.Compare(doc.Path, this.Path) != 0)
{
changeLog.Add("Path has been changed from '" + this.Path + "' to '" + doc.Path + "'");
this.path = doc.Path;
pathChanged = true;
}
// Are there any new pictures?
foreach (Picture pic in doc.Images)
{
if (!(this.Images.Contains(pic)))
{
picturesAdded = true;
imagesAdded.Add(pic);
}
}
// Are any of the old pictures removed?
foreach (Picture pic in this.Images)
{
if (!(doc.Images.Contains(pic)))
{
picturesRemoved = true;
imagesRemoved.Add(pic);
}
}
foreach (Picture pic in imagesRemoved)
{
images.Remove(pic);
pic.Image.Dispose();
}
foreach (Picture pic in imagesAdded)
{
images.Add(pic);
}
// If there were pictures added, add it to the changelog.
if (picturesAdded)
{
StringBuilder imageLineBuilder = new StringBuilder();
for (int i = 0; i < imagesAdded.Count; i++)
{
if (i == imagesAdded.Count - 1)
imageLineBuilder.AppendFormat(imagesAdded[i].Id);
else
imageLineBuilder.AppendFormat(imagesAdded[i].Id + ",");
}
changeLog.Add("Following pictures were added: " + imageLineBuilder.ToString());
}
// If there were pictures removed, add it to the changelog.
if (picturesRemoved)
{
StringBuilder imageLineBuilder = new StringBuilder();
for (int i = 0; i < imagesRemoved.Count; i++)
{
if (i == imagesRemoved.Count - 1)
imageLineBuilder.AppendFormat(imagesRemoved[i].Id);
else
imageLineBuilder.AppendFormat(imagesRemoved[i].Id + ", ");
}
changeLog.Add("Following pictures were removed: " + imageLineBuilder.ToString());
}
// Finally, add changes to the text to the changelog.
if (textChanged)
changeLog.Add("Changes to the documents text:");
foreach (string change in changes)
{
changeLog.Add(change);
}
string titleString = "";
string pathString = "";
string textString = "";
string pictureString = "";
string masterString = "Changed the document's: ";
if (titleChanged)
titleString = "Title. ";
if (textChanged)
textString = "Text. ";
if (pathChanged)
pathString = "Path. ";
if ((picturesAdded || picturesRemoved)&&textChanged)
pictureString = " And changed attached pictures";
else if ((picturesAdded || picturesRemoved) && textChanged == false)
{
masterString = "";
pictureString = "Changed the attached pictures";
}
this.Log.AddEntry(new DocumentLog.Entry(user, masterString + titleString + textString + pathString + pictureString, changeLog));
return true;
}
// This functions takes a newer version of this document, and merges it with this one
// acording to "Simple Merge Policy" given in slice-of-pie.pdf.
// It also updated all other fields in the document according to the new version
// and generates a log based on the changes.
// MergeWith returns a bool as well, it returns false if the ID of the updated
// document is not the same as this documents ID, otherwise it returns true
public bool MergeWith(Document doc, User user)
{
if (this.id != doc.id)
{
return(false);
}
List <string> changes = new List <string>();
// Create original and latest arrays. ( step 1 )
string[] original = this.GetTextAsArray();
string[] latest = doc.GetTextAsArray();
// Create merged array ( made as a list instead ). ( step 2 )
List <string> merged = new List <string>();
// Definer o and n index, which point to lines in the original and latest arrays. ( step 3 )
int o = 0;
int n = 0;
bool done = false;
Console.Out.WriteLine("Started merge.");
// While loop that continues untill the end of both versions of the document have been reached.
while (!done)
{
Console.Out.WriteLine("New round in while loop");
// All remaining lines in latest are new. ( step 4 )
if ((o == original.Length) && (n != latest.Length))
{
Console.Out.WriteLine("Step 4");
for (int N = n; N < latest.Length; N++)
{
changes.Add("+L" + N + ": " + latest[N]);
merged.Add(latest[N]);
n++;
}
}
// All remaining lines in original have been removed. ( step 5 )
else if ((o != original.Length) && (n == latest.Length))
{
Console.Out.WriteLine("Step 5");
for (int O = o; O < original.Length; O++)
{
changes.Add("-L" + O + ": " + original[O]);
}
o = original.Length;
}
// No changes have occured in this line ( step 6 )
else if (String.Compare(original[o], latest[n]) == 0)
{
Console.Out.WriteLine("Step 6");
merged.Add(original[o]);
n++;
o++;
}
else if (String.Compare(original[o], latest[n]) != 0)
{
List <string> temp = new List <string>();
bool found = false;
int t = 0;
for (int N = n; N < latest.Length; N++)
{
temp.Add(latest[N]);
if (String.Compare(original[o], latest[N]) == 0)
{
found = true;
t = N;
break;
}
}
// Line has been removed ( Step 7.b )
if (found == false)
{
Console.Out.WriteLine("Step 7.b");
changes.Add("-L" + o + ": " + original[o]);
o++;
}
// All lines in between have been added ( step 7.c )
else
{
Console.Out.WriteLine("Step 7.c");
int counter = 0;
foreach (string s in temp)
{
if (!(counter == temp.Count - 1))
{
changes.Add("+L" + n + ": " + latest[n]);
}
merged.Add(s);
n++;
counter++;
}
o++;
n = t + 1;
}
}
if (((o == original.Length) && (n == latest.Length)))
{
done = true;
}
}
Console.Out.WriteLine("Merge complete");
StringBuilder newTextBuilder = new StringBuilder();
for (int i = 0; i < merged.Count; i++)
{
if (!(i == merged.Count - 1))
{
newTextBuilder.AppendFormat(merged[i] + "\n");
}
else
{
newTextBuilder.AppendFormat(merged[i]);
}
}
text = newTextBuilder.ToString();
// Check and see if the document has been marked for deletion
this.deleted = doc.deleted;
// A log that will document what changes have been made to the document.
List <string> changeLog = new List <string>();
bool titleChanged = false;
bool pathChanged = false;
bool textChanged = (!(changes.Count == 0));
bool picturesAdded = false;
bool picturesRemoved = false;
List <Picture> imagesAdded = new List <Picture>();
List <Picture> imagesRemoved = new List <Picture>();
// Has title been changed?
if (String.Compare(doc.Title, this.Title) != 0)
{
changeLog.Add("Title has been changed from '" + this.Title + "' to '" + doc.Title + "'");
this.title = doc.Title;
titleChanged = true;
}
// Has path been changed?
if (String.Compare(doc.Path, this.Path) != 0)
{
changeLog.Add("Path has been changed from '" + this.Path + "' to '" + doc.Path + "'");
this.path = doc.Path;
pathChanged = true;
}
// Are there any new pictures?
foreach (Picture pic in doc.Images)
{
if (!(this.Images.Contains(pic)))
{
picturesAdded = true;
imagesAdded.Add(pic);
}
}
// Are any of the old pictures removed?
foreach (Picture pic in this.Images)
{
if (!(doc.Images.Contains(pic)))
{
picturesRemoved = true;
imagesRemoved.Add(pic);
}
}
foreach (Picture pic in imagesRemoved)
{
images.Remove(pic);
pic.Image.Dispose();
}
foreach (Picture pic in imagesAdded)
{
images.Add(pic);
}
// If there were pictures added, add it to the changelog.
if (picturesAdded)
{
StringBuilder imageLineBuilder = new StringBuilder();
for (int i = 0; i < imagesAdded.Count; i++)
{
if (i == imagesAdded.Count - 1)
{
imageLineBuilder.AppendFormat(imagesAdded[i].Id);
}
else
{
imageLineBuilder.AppendFormat(imagesAdded[i].Id + ",");
}
}
changeLog.Add("Following pictures were added: " + imageLineBuilder.ToString());
}
// If there were pictures removed, add it to the changelog.
if (picturesRemoved)
{
StringBuilder imageLineBuilder = new StringBuilder();
for (int i = 0; i < imagesRemoved.Count; i++)
{
if (i == imagesRemoved.Count - 1)
{
imageLineBuilder.AppendFormat(imagesRemoved[i].Id);
}
else
{
imageLineBuilder.AppendFormat(imagesRemoved[i].Id + ", ");
}
}
changeLog.Add("Following pictures were removed: " + imageLineBuilder.ToString());
}
// Finally, add changes to the text to the changelog.
if (textChanged)
{
changeLog.Add("Changes to the documents text:");
}
foreach (string change in changes)
{
changeLog.Add(change);
}
string titleString = "";
string pathString = "";
string textString = "";
string pictureString = "";
string masterString = "Changed the document's: ";
if (titleChanged)
{
titleString = "Title. ";
}
if (textChanged)
{
textString = "Text. ";
}
if (pathChanged)
{
pathString = "Path. ";
}
if ((picturesAdded || picturesRemoved) && textChanged)
{
pictureString = " And changed attached pictures";
}
else if ((picturesAdded || picturesRemoved) && textChanged == false)
{
masterString = "";
pictureString = "Changed the attached pictures";
}
this.Log.AddEntry(new DocumentLog.Entry(user, masterString + titleString + textString + pathString + pictureString, changeLog));
return(true);
}
