// Sitecore.Text.Diff.View.TwoCoumnsDiffView
        protected static void Compare(ref string value1, ref string value2)
        {
            DiffEngine diffEngine = new DiffEngine();
            string     value3     = value1;
            string     value4     = value2;

            value1 = StringUtil.RemoveTags(value1);
            value2 = StringUtil.RemoveTags(value2);
            DiffListHtml source      = new DiffListHtml(value1);
            DiffListHtml destination = new DiffListHtml(value2);

            diffEngine.ProcessDiff(source, destination, DiffEngineLevel.SlowPerfect);
            System.Collections.ArrayList arrayList      = diffEngine.DiffReport();
            System.Text.StringBuilder    stringBuilder  = new System.Text.StringBuilder();
            System.Text.StringBuilder    stringBuilder2 = new System.Text.StringBuilder();
            for (int i = 0; i < arrayList.Count; i++)
            {
                DiffResultSpan diffResultSpan = arrayList[i] as DiffResultSpan;
                if (diffResultSpan != null)
                {
                    switch (diffResultSpan.Status)
                    {
                    case DiffResultSpanStatus.NoChange:
                        Append(stringBuilder, value1, diffResultSpan.SourceIndex, diffResultSpan.Length);
                        Append(stringBuilder2, value2, diffResultSpan.DestIndex, diffResultSpan.Length);
                        break;

                    case DiffResultSpanStatus.Replace:
                        Append(stringBuilder, value1, diffResultSpan.SourceIndex, diffResultSpan.Length, "blue;font-weight:bold");
                        Append(stringBuilder2, value2, diffResultSpan.DestIndex, diffResultSpan.Length, "blue;font-weight:bold");
                        break;

                    case DiffResultSpanStatus.DeleteSource:
                        Append(stringBuilder, value1, diffResultSpan.SourceIndex, diffResultSpan.Length, "blue;font-weight:bold");
                        Append(stringBuilder2, value2, diffResultSpan.DestIndex, diffResultSpan.Length, "blue;font-weight:bold");
                        break;

                    case DiffResultSpanStatus.AddDestination:
                        Append(stringBuilder, value1, diffResultSpan.SourceIndex, diffResultSpan.Length, "blue;font-weight:bold");
                        Append(stringBuilder2, value2, diffResultSpan.DestIndex, diffResultSpan.Length, "blue;font-weight:bold");
                        break;
                    }
                }
            }

            if (arrayList.Count == 0 && (value3.Contains("<image") || value4.Contains("<image") || value3.Contains("<link") || value4.Contains("<link")))
            {
                stringBuilder.Append("<span>" + value3.Replace("<image", "< image").Replace("<link", "< link") + "</span>");
                stringBuilder2.Append("<span>" + value4.Replace("<image", "< image").Replace("<link", "< link") + "</span>");
            }

            value1 = stringBuilder.ToString();
            value2 = stringBuilder2.ToString();
        }
Ejemplo n.º 2
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    public ArrayList DiffReport()
    {
        ArrayList retval = new ArrayList();
        int       dcount = _dest.Count();
        int       scount = _source.Count();

        //Deal with the special case of empty files
        if (dcount == 0)
        {
            if (scount > 0)
            {
                retval.Add(DiffResultSpan.CreateDeleteSource(0, scount));
            }
            return(retval);
        }
        else
        {
            if (scount == 0)
            {
                retval.Add(DiffResultSpan.CreateAddDestination(0, dcount));
                return(retval);
            }
        }


        _matchList.Sort();
        int            curDest   = 0;
        int            curSource = 0;
        DiffResultSpan last      = null;

        //Process each match record
        foreach (DiffResultSpan drs in _matchList)
        {
            if ((!AddChanges(retval, curDest, drs.DestIndex, curSource, drs.SourceIndex)) &&
                (last != null))
            {
                last.AddLength(drs.Length);
            }
            else
            {
                retval.Add(drs);
            }
            curDest   = drs.DestIndex + drs.Length;
            curSource = drs.SourceIndex + drs.Length;
            last      = drs;
        }

        //Process any tail end data
        AddChanges(retval, curDest, dcount, curSource, scount);

        return(retval);
    }
Ejemplo n.º 3
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    private bool AddChanges(
        ArrayList report,
        int curDest,
        int nextDest,
        int curSource,
        int nextSource)
    {
        bool retval     = false;
        int  diffDest   = nextDest - curDest;
        int  diffSource = nextSource - curSource;
        int  minDiff    = 0;

        if (diffDest > 0)
        {
            if (diffSource > 0)
            {
                minDiff = Math.Min(diffDest, diffSource);
                report.Add(DiffResultSpan.CreateReplace(curDest, curSource, minDiff));
                if (diffDest > diffSource)
                {
                    curDest += minDiff;
                    report.Add(DiffResultSpan.CreateAddDestination(curDest, diffDest - diffSource));
                }
                else
                {
                    if (diffSource > diffDest)
                    {
                        curSource += minDiff;
                        report.Add(DiffResultSpan.CreateDeleteSource(curSource, diffSource - diffDest));
                    }
                }
            }
            else
            {
                report.Add(DiffResultSpan.CreateAddDestination(curDest, diffDest));
            }
            retval = true;
        }
        else
        {
            if (diffSource > 0)
            {
                report.Add(DiffResultSpan.CreateDeleteSource(curSource, diffSource));
                retval = true;
            }
        }
        return(retval);
    }
        protected static string Compare(string value1, string value2)
        {
            DiffEngine diffEngine = new DiffEngine();

            value1 = StringUtil.RemoveTags(value1);
            value2 = StringUtil.RemoveTags(value2);
            DiffListHtml source      = new DiffListHtml(value1);
            DiffListHtml destination = new DiffListHtml(value2);

            diffEngine.ProcessDiff(source, destination, DiffEngineLevel.SlowPerfect);
            System.Collections.ArrayList arrayList     = diffEngine.DiffReport();
            System.Text.StringBuilder    stringBuilder = new System.Text.StringBuilder();
            for (int i = 0; i < arrayList.Count; i++)
            {
                DiffResultSpan diffResultSpan = arrayList[i] as DiffResultSpan;
                if (diffResultSpan != null)
                {
                    switch (diffResultSpan.Status)
                    {
                    case DiffResultSpanStatus.NoChange:
                        Append(stringBuilder, value1, diffResultSpan.SourceIndex, diffResultSpan.Length);
                        break;

                    case DiffResultSpanStatus.Replace:
                        Append(stringBuilder, value1, diffResultSpan.SourceIndex, diffResultSpan.Length, "green");
                        Append(stringBuilder, value2, diffResultSpan.DestIndex, diffResultSpan.Length, "red; text-decoration:line-through;font-weight:bold");
                        break;

                    case DiffResultSpanStatus.DeleteSource:
                        Append(stringBuilder, value1, diffResultSpan.SourceIndex, diffResultSpan.Length, "green;font-weight:bold");
                        break;

                    case DiffResultSpanStatus.AddDestination:
                        Append(stringBuilder, value2, diffResultSpan.DestIndex, diffResultSpan.Length, "red; text-decoration:line-through;font-weight:bold");
                        break;
                    }
                }
            }
            return(stringBuilder.ToString());
        }
Ejemplo n.º 5
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    private string GetSpanText(DiffResultSpan span, bool fromDest)
    {
        IDiffList list;
        int       startIndex;

        if (fromDest)
        {
            list       = destination;
            startIndex = span.DestIndex;
        }
        else
        {
            list       = source;
            startIndex = span.SourceIndex;
        }

        string str = "";

        for (int i = 0; i < span.Length; i++)
        {
            str += ((TextLine)list.GetByIndex(startIndex + i)).Line + (i < span.Length - 1 ? "\n" : "");
        }
        return(str);
    }
Ejemplo n.º 6
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        private void ProcessRange(int destStart, int destEnd, int sourceStart, int sourceEnd)
        {
            var       curBestIndex          = -1;
            var       curBestLength         = -1;
            var       maxPossibleDestLength = 0;
            DiffState curItem  = null;
            DiffState bestItem = null;

            for (var destIndex = destStart; destIndex <= destEnd; destIndex++)
            {
                maxPossibleDestLength = destEnd - destIndex + 1;
                if (maxPossibleDestLength <= curBestLength)
                {
                    //we won't find a longer one even if we looked
                    break;
                }
                curItem = stateList.GetByIndex(destIndex);

                if (!curItem.HasValidLength(sourceStart, sourceEnd, maxPossibleDestLength))
                {
                    //recalc new best length since it isn't valid or has never been done.
                    GetLongestSourceMatch(curItem, destIndex, destEnd, sourceStart, sourceEnd);
                }
                if (curItem.Status == DiffStatus.Matched)
                {
                    switch (level)
                    {
                    case DiffEngineLevel.FastImperfect:
                        if (curItem.Length > curBestLength)
                        {
                            //this is longest match so far
                            curBestIndex  = destIndex;
                            curBestLength = curItem.Length;
                            bestItem      = curItem;
                        }

                        //Jump over the match
                        destIndex += curItem.Length - 1;
                        break;

                    case DiffEngineLevel.Medium:
                        if (curItem.Length > curBestLength)
                        {
                            //this is longest match so far
                            curBestIndex  = destIndex;
                            curBestLength = curItem.Length;
                            bestItem      = curItem;

                            //Jump over the match
                            destIndex += curItem.Length - 1;
                        }
                        break;

                    default:
                        if (curItem.Length > curBestLength)
                        {
                            //this is longest match so far
                            curBestIndex  = destIndex;
                            curBestLength = curItem.Length;
                            bestItem      = curItem;
                        }
                        break;
                    }
                }
            }
            if (curBestIndex < 0)
            {
                //we are done - there are no matches in this span
            }
            else
            {
                var sourceIndex = bestItem.StartIndex;
                matchList.Add(DiffResultSpan.CreateNoChange(curBestIndex, sourceIndex, curBestLength));
                if (destStart < curBestIndex)
                {
                    //Still have more lower destination data
                    if (sourceStart < sourceIndex)
                    {
                        //Still have more lower source data
                        // Recursive call to process lower indexes
                        ProcessRange(destStart, curBestIndex - 1, sourceStart, sourceIndex - 1);
                    }
                }
                var upperDestStart   = curBestIndex + curBestLength;
                var upperSourceStart = sourceIndex + curBestLength;
                if (destEnd > upperDestStart)
                {
                    //we still have more upper dest data
                    if (sourceEnd > upperSourceStart)
                    {
                        //set still have more upper source data
                        // Recursive call to process upper indexes
                        ProcessRange(upperDestStart, destEnd, upperSourceStart, sourceEnd);
                    }
                }
            }
        }