6245535001

Committed 20 Sep 2023 07:44AM UTC coverage: 57.013%. First build

Build # 6245535001

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Commit Message

8.1.0 Release (#1628)

* Bump Newtonsoft.Json from 13.0.1 to 13.0.2

Bumps [Newtonsoft.Json](https://github.com/JamesNK/Newtonsoft.Json) from 13.0.1 to 13.0.2.
- [Release notes](https://github.com/JamesNK/Newtonsoft.Json/releases)
- [Commits](https://github.com/JamesNK/Newtonsoft.Json/compare/13.0.1...13.0.2)

---
updated-dependencies:
- dependency-name: Newtonsoft.Json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

* Bump NLog from 5.0.5 to 5.1.0

Bumps [NLog](https://github.com/NLog/NLog) from 5.0.5 to 5.1.0.
- [Release notes](https://github.com/NLog/NLog/releases)
- [Changelog](https://github.com/NLog/NLog/blob/dev/CHANGELOG.md)
- [Commits](https://github.com/NLog/NLog/compare/v5.0.5...v5.1.0)

---
updated-dependencies:
- dependency-name: NLog
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* Bump NLog from 5.0.5 to 5.1.0

* Fix -r flag - should have been --results-directory all along

* Bump Newtonsoft.Json from 13.0.1 to 13.0.2

* Bump YamlDotNet from 12.0.2 to 12.1.0

Bumps [YamlDotNet](https://github.com/aaubry/YamlDotNet) from 12.0.2 to 12.1.0.
- [Release notes](https://github.com/aaubry/YamlDotNet/releases)
- [Commits](https://github.com/aaubry/YamlDotNet/compare/v12.0.2...v12.1.0)

---
updated-dependencies:
- dependency-name: YamlDotNet
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* Bump Moq from 4.18.2 to 4.18.3

Bumps [Moq](https://github.com/moq/moq4) from 4.18.2 to 4.18.3.
- [Release notes](https://github.com/moq/moq4/releases)
- [Changelog](https://github.com/moq/moq4/blob/main/CHANGELOG.md)
- [Commits](https://github.com/moq/moq4/compare/v4.18.2...v4.18.3)

---
updated-dependencies:
- dependency-name: Moq
... (continued)

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79.46

/Rdmp.Core/ReusableLibraryCode/Diff.cs

// Copyright (c) The University of Dundee 2018-2019
// This file is part of the Research Data Management Platform (RDMP).
// RDMP is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
// RDMP is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along with RDMP. If not, see <https://www.gnu.org/licenses/>.

using System;
using System.Collections;
using System.Text.RegularExpressions;

namespace Rdmp.Core.ReusableLibraryCode;

/// <summary>
/// This Class implements the Difference Algorithm published in
/// "An O(ND) Difference Algorithm and its Variations" by Eugene Myers
/// Algorithmica Vol. 1 No. 2, 1986, p 251.
/// 
/// <para>There are many C, Java, Lisp implementations public available but they all seem to come
/// from the same source (diffutils) that is under the (unfree) GNU public License
/// and cannot be reused as a sourcecode for a commercial application.
/// There are very old C implementations that use other (worse) algorithms.
/// Microsoft also published sourcecode of a diff-tool (windiff) that uses some tree data.
/// Also, a direct transfer from a C source to C# is not easy because there is a lot of pointer
/// arithmetic in the typical C solutions and i need a managed solution.
/// These are the reasons why I implemented the original published algorithm from the scratch and
/// make it available without the GNU license limitations.
/// I do not need a high performance diff tool because it is used only sometimes.
/// I will do some performance tweaking when needed.</para>
/// 
/// <para>The algorithm itself is comparing 2 arrays of numbers so when comparing 2 text documents
/// each line is converted into a (hash) number. See DiffText(). </para>
/// 
/// <para>Some changes to the original algorithm:
/// The original algorithm was described using a recursive approach and comparing zero indexed arrays.
/// Extracting sub-arrays and rejoining them is very performance and memory intensive so the same
/// (readonly) data arrays are passed around together with their lower and upper bounds.
/// This circumstance makes the LCS and SMS functions more complicate.
/// I added some code to the LCS function to get a fast response on sub-arrays that are identical,
/// completely deleted or inserted.</para>
/// 
/// <para>The result from a comparison is stored in 2 arrays that flag for modified (deleted or inserted)
/// lines in the 2 data arrays. These bits are then analysed to produce a array of Item objects.</para>
/// 
/// <para>Further possible optimizations:
/// (first rule: don't do it; second: don't do it yet)
/// The arrays DataA and DataB are passed as parameters, but are never changed after the creation
/// so they can be members of the class to avoid the parameter overhead.
/// In SMS is a lot of boundary arithmetic in the for-D and for-k loops that can be done by increment
/// and decrement of local variables.
/// The DownVector and UpVector arrays are always created and destroyed each time the SMS gets called.
/// It is possible to reuse them when transferring them to members of the class.</para>
/// 
/// <para>diff.cs: A port of the algorithm to C#
/// Created by Matthias Hertel, see http://www.mathertel.de
/// This work is licensed under a Creative Commons Attribution 2.0 Germany License.
/// see http://creativecommons.org/licenses/by/2.0/de/</para>
/// 
/// <para>Changes:
/// 2002.09.20 There was a "hang" in some situations.
/// Now I understand a little bit more of the SMS algorithm.
/// There have been overlapping boxes; that where analyzed partial differently.
/// One return-point is enough.
/// A assertion was added in CreateDiffs when in debug-mode, that counts the number of equal (no modified) lines in both arrays.
/// They must be identical.</para>
/// 
/// <para>2003.02.07 Out of bounds error in the Up/Down vector arrays in some situations.
/// The two vectors are now accessed using different offsets that are adjusted using the start k-Line.
/// A test case is added. </para>
/// 
/// <para>2006.03.05 Some documentation and a direct Diff entry point.</para>
/// 
/// <para>2006.03.08 Refactored the API to static methods on the Diff class to make usage simpler.
/// 2006.03.10 using the standard Debug class for self-test now.
///            compile with: csc /target:exe /out:diffTest.exe /d:DEBUG /d:TRACE /d:SELFTEST Diff.cs</para>
/// </summary>
public class Diff
{
    /// <summary>details of one difference.</summary>
    public struct Item
    {
        /// <summary>Start Line number in Data A.</summary>
        public int StartA;

        /// <summary>Start Line number in Data B.</summary>
        public int StartB;

        /// <summary>Number of changes in Data A.</summary>
        public int deletedA;

        /// <summary>Number of changes in Data A.</summary>
        public int insertedB;
    } // Item

    /// <summary>
    /// Shortest Middle Snake Return Data
    /// </summary>
    private struct SMSRD
    {
        internal int x, y;
        // internal int u, v;  // 2002.09.20: no need for 2 points
    }


    #region self-Test

#if (SELFTEST)
    /// <summary>
    /// start a self- / box-test for some diff cases and report to the debug output.
    /// </summary>
    /// <param name="args">not used</param>
    /// <returns>always 0</returns>
    public static int Main(string[] args) {
      StringBuilder ret = new StringBuilder();
      string a, b;

      System.Diagnostics.ConsoleTraceListener ctl = new System.Diagnostics.ConsoleTraceListener(false);
      System.Diagnostics.Debug.Listeners.Add(ctl);

      System.Console.WriteLine("Diff Self Test...");

      // test all changes
      a = "a,b,c,d,e,f,g,h,i,j,k,l".Replace(',', '\n');
      b = "0,1,2,3,4,5,6,7,8,9".Replace(',', '\n');
      System.Diagnostics.Debug.Assert(TestHelper(Diff.DiffText(a, b, false, false, false))
        == "12.10.0.0*",
        "all-changes test failed.");
      System.Diagnostics.Debug.WriteLine("all-changes test passed.");
      // test all same
      a = "a,b,c,d,e,f,g,h,i,j,k,l".Replace(',', '\n');
      b = a;
      System.Diagnostics.Debug.Assert(TestHelper(Diff.DiffText(a, b, false, false, false))
        == "",
        "all-same test failed.");
      System.Diagnostics.Debug.WriteLine("all-same test passed.");

      // test snake
      a = "a,b,c,d,e,f".Replace(',', '\n');
      b = "b,c,d,e,f,x".Replace(',', '\n');
      System.Diagnostics.Debug.Assert(TestHelper(Diff.DiffText(a, b, false, false, false))
        == "1.0.0.0*0.1.6.5*",
        "snake test failed.");
      System.Diagnostics.Debug.WriteLine("snake test passed.");

      // 2002.09.20 - repro
      a = "c1,a,c2,b,c,d,e,g,h,i,j,c3,k,l".Replace(',', '\n');
      b = "C1,a,C2,b,c,d,e,I1,e,g,h,i,j,C3,k,I2,l".Replace(',', '\n');
      System.Diagnostics.Debug.Assert(TestHelper(Diff.DiffText(a, b, false, false, false))
        == "1.1.0.0*1.1.2.2*0.2.7.7*1.1.11.13*0.1.13.15*",
        "repro20020920 test failed.");
      System.Diagnostics.Debug.WriteLine("repro20020920 test passed.");

      // 2003.02.07 - repro
      a = "F".Replace(',', '\n');
      b = "0,F,1,2,3,4,5,6,7".Replace(',', '\n');
      System.Diagnostics.Debug.Assert(TestHelper(Diff.DiffText(a, b, false, false, false))
        == "0.1.0.0*0.7.1.2*",
        "repro20030207 test failed.");
      System.Diagnostics.Debug.WriteLine("repro20030207 test passed.");

      // Muegel - repro
      a = "HELLO\nWORLD";
      b = "\n\nhello\n\n\n\nworld\n";
      System.Diagnostics.Debug.Assert(TestHelper(Diff.DiffText(a, b, false, false, false))
        == "2.8.0.0*",
        "repro20030409 test failed.");
      System.Diagnostics.Debug.WriteLine("repro20030409 test passed.");

    // test some differences
      a = "a,b,-,c,d,e,f,f".Replace(',', '\n');
      b = "a,b,x,c,e,f".Replace(',', '\n');
      System.Diagnostics.Debug.Assert(TestHelper(Diff.DiffText(a, b, false, false, false))
        == "1.1.2.2*1.0.4.4*1.0.6.5*",
        "some-changes test failed.");
      System.Diagnostics.Debug.WriteLine("some-changes test passed.");

      System.Diagnostics.Debug.WriteLine("End.");
      System.Diagnostics.Debug.Flush();

      return (0);
    }


    public static string TestHelper(Item []f) {
      StringBuilder ret = new StringBuilder();
      for (int n = 0; n < f.Length; n++) {
        ret.Append(f[n].deletedA.ToString() + "." + f[n].insertedB.ToString() + "." + f[n].StartA.ToString() + "." + f[n].StartB.ToString() + "*");
      }
      // Debug.Write(5, "TestHelper", ret.ToString());
      return (ret.ToString());
    }
#endif

    #endregion


    /// <summary>
    /// Find the difference in 2 texts, comparing by textlines.
    /// </summary>
    /// <param name="TextA">A-version of the text (usually the old one)</param>
    /// <param name="TextB">B-version of the text (usually the new one)</param>
    /// <returns>Returns a array of Items that describe the differences.</returns>
    public static Item[] DiffText(string TextA, string TextB) =>
        DiffText(TextA, TextB, false, false, false); // DiffText


    /// <summary>
    /// Find the difference in 2 text documents, comparing by textlines.
    /// The algorithm itself is comparing 2 arrays of numbers so when comparing 2 text documents
    /// each line is converted into a (hash) number. This hash-value is computed by storing all
    /// textlines into a common hashtable so i can find duplicates in there, and generating a
    /// new number each time a new textline is inserted.
    /// </summary>
    /// <param name="TextA">A-version of the text (usually the old one)</param>
    /// <param name="TextB">B-version of the text (usually the new one)</param>
    /// <param name="trimSpace">When set to true, all leading and trailing whitespace characters are stripped out before the comparison is done.</param>
    /// <param name="ignoreSpace">When set to true, all whitespace characters are converted to a single space character before the comparison is done.</param>
    /// <param name="ignoreCase">When set to true, all characters are converted to their lowercase equivalents before the comparison is done.</param>
    /// <returns>Returns a array of Items that describe the differences.</returns>
    public static Item[] DiffText(string TextA, string TextB, bool trimSpace, bool ignoreSpace, bool ignoreCase)
    {
        // prepare the input-text and convert to comparable numbers.
        var h = new Hashtable(TextA.Length + TextB.Length);

        // The A-Version of the data (original data) to be compared.
        var DataA = new DiffData(DiffCodes(TextA, h, trimSpace, ignoreSpace, ignoreCase));

        // The B-Version of the data (modified data) to be compared.
        var DataB = new DiffData(DiffCodes(TextB, h, trimSpace, ignoreSpace, ignoreCase));

        LCS(DataA, 0, DataA.Length, DataB, 0, DataB.Length);
        return CreateDiffs(DataA, DataB);
    } // DiffText


    /// <summary>
    /// Find the difference in 2 arrays of integers.
    /// </summary>
    /// <param name="ArrayA">A-version of the numbers (usually the old one)</param>
    /// <param name="ArrayB">B-version of the numbers (usually the new one)</param>
    /// <returns>Returns a array of Items that describe the differences.</returns>
    public static Item[] DiffInt(int[] ArrayA, int[] ArrayB)
    {
        // The A-Version of the data (original data) to be compared.
        var DataA = new DiffData(ArrayA);

        // The B-Version of the data (modified data) to be compared.
        var DataB = new DiffData(ArrayB);

        LCS(DataA, 0, DataA.Length, DataB, 0, DataB.Length);
        return CreateDiffs(DataA, DataB);
    } // Diff


    /// <summary>
    /// This function converts all textlines of the text into unique numbers for every unique textline
    /// so further work can work only with simple numbers.
    /// </summary>
    /// <param name="aText">the input text</param>
    /// <param name="h">This extern initialized hashtable is used for storing all ever used textlines.</param>
    /// <param name="trimSpace">ignore leading and trailing space characters</param>
    /// <param name="ignoreSpace">ignore whitespace differences e.g. double spaces vs single spaces</param>
    /// <param name="ignoreCase">ignore capitalisation in comparison</param>
    /// <returns>a array of integers.</returns>
    private static int[] DiffCodes(string aText, Hashtable h, bool trimSpace, bool ignoreSpace, bool ignoreCase)
    {
        // get all codes of the text
        var lastUsedCode = h.Count;

        // strip off all cr, only use lf as line separator.
        aText = aText.Replace("\r", "");
        var Lines = aText.Split('\n');

        var Codes = new int[Lines.Length];

        for (var i = 0; i < Lines.Length; ++i)
        {
            var s = Lines[i];
            if (trimSpace)
                s = s.Trim();

            if (ignoreSpace) s = Regex.Replace(s, "\\s+", " ");

            if (ignoreCase)
                s = s.ToLower();

            var aCode = h[s];
            if (aCode == null)
            {
                lastUsedCode++;
                h[s] = lastUsedCode;
                Codes[i] = lastUsedCode;
            }
            else
            {
                Codes[i] = (int)aCode;
            } // if
        } // for

        return Codes;
    } // DiffCodes


    /// <summary>
    /// This is the algorithm to find the Shortest Middle Snake (SMS).
    /// </summary>
    /// <param name="DataA">sequence A</param>
    /// <param name="LowerA">lower bound of the actual range in DataA</param>
    /// <param name="UpperA">upper bound of the actual range in DataA (exclusive)</param>
    /// <param name="DataB">sequence B</param>
    /// <param name="LowerB">lower bound of the actual range in DataB</param>
    /// <param name="UpperB">upper bound of the actual range in DataB (exclusive)</param>
    /// <returns>a MiddleSnakeData record containing x,y and u,v</returns>
    private static SMSRD SMS(DiffData DataA, int LowerA, int UpperA, DiffData DataB, int LowerB, int UpperB)
    {
        var MAX = DataA.Length + DataB.Length + 1;

        var DownK = LowerA - LowerB; // the k-line to start the forward search
        var UpK = UpperA - UpperB; // the k-line to start the reverse search

        var Delta = UpperA - LowerA - (UpperB - LowerB);
        var oddDelta = (Delta & 1) != 0;

        // vector for the (0,0) to (x,y) search
        var DownVector = new int[2 * MAX + 2];

        // vector for the (u,v) to (N,M) search
        var UpVector = new int[2 * MAX + 2];

        // The vectors in the publication accepts negative indexes. the vectors implemented here are 0-based
        // and are access using a specific offset: UpOffset UpVector and DownOffset for DownVektor
        var DownOffset = MAX - DownK;
        var UpOffset = MAX - UpK;

        var MaxD = (UpperA - LowerA + UpperB - LowerB) / 2 + 1;

        // Debug.Write(2, "SMS", String.Format("Search the box: A[{0}-{1}] to B[{2}-{3}]", LowerA, UpperA, LowerB, UpperB));

        // init vectors
        DownVector[DownOffset + DownK + 1] = LowerA;
        UpVector[UpOffset + UpK - 1] = UpperA;

        for (var D = 0; D <= MaxD; D++)
        {
            // Extend the forward path.
            SMSRD ret;
            for (var k = DownK - D; k <= DownK + D; k += 2)
            {
                // Debug.Write(0, "SMS", "extend forward path " + k.ToString());

                // find the only or better starting point
                int x;
                if (k == DownK - D)
                {
                    x = DownVector[DownOffset + k + 1]; // down
                }
                else
                {
                    x = DownVector[DownOffset + k - 1] + 1; // a step to the right
                    if (k < DownK + D && DownVector[DownOffset + k + 1] >= x)
                        x = DownVector[DownOffset + k + 1]; // down
                }

                var y = x - k;

                // find the end of the furthest reaching forward D-path in diagonal k.
                while (x < UpperA && y < UpperB && DataA.data[x] == DataB.data[y])
                {
                    x++;
                    y++;
                }

                DownVector[DownOffset + k] = x;

                // overlap ?
                if (oddDelta && UpK - D < k && k < UpK + D)
                    if (UpVector[UpOffset + k] <= DownVector[DownOffset + k])
                    {
                        ret.x = DownVector[DownOffset + k];
                        ret.y = DownVector[DownOffset + k] - k;
                        // ret.u = UpVector[UpOffset + k];      // 2002.09.20: no need for 2 points
                        // ret.v = UpVector[UpOffset + k] - k;
                        return ret;
                    } // if
                // if
            } // for k

            // Extend the reverse path.
            for (var k = UpK - D; k <= UpK + D; k += 2)
            {
                // Debug.Write(0, "SMS", "extend reverse path " + k.ToString());

                // find the only or better starting point
                int x;
                if (k == UpK + D)
                {
                    x = UpVector[UpOffset + k - 1]; // up
                }
                else
                {
                    x = UpVector[UpOffset + k + 1] - 1; // left
                    if (k > UpK - D && UpVector[UpOffset + k - 1] < x)
                        x = UpVector[UpOffset + k - 1]; // up
                } // if

                var y = x - k;

                while (x > LowerA && y > LowerB && DataA.data[x - 1] == DataB.data[y - 1])
                {
                    x--;
                    y--; // diagonal
                }

                UpVector[UpOffset + k] = x;

                // overlap ?
                if (!oddDelta && DownK - D <= k && k <= DownK + D)
                    if (UpVector[UpOffset + k] <= DownVector[DownOffset + k])
                    {
                        ret.x = DownVector[DownOffset + k];
                        ret.y = DownVector[DownOffset + k] - k;
                        // ret.u = UpVector[UpOffset + k];     // 2002.09.20: no need for 2 points
                        // ret.v = UpVector[UpOffset + k] - k;
                        return ret;
                    } // if
                // if
            } // for k
        } // for D

        throw new ApplicationException("the algorithm should never come here.");
    } // SMS


    /// <summary>
    /// This is the divide-and-conquer implementation of the longes common-subsequence (LCS)
    /// algorithm.
    /// The published algorithm passes recursively parts of the A and B sequences.
    /// To avoid copying these arrays the lower and upper bounds are passed while the sequences stay constant.
    /// </summary>
    /// <param name="DataA">sequence A</param>
    /// <param name="LowerA">lower bound of the actual range in DataA</param>
    /// <param name="UpperA">upper bound of the actual range in DataA (exclusive)</param>
    /// <param name="DataB">sequence B</param>
    /// <param name="LowerB">lower bound of the actual range in DataB</param>
    /// <param name="UpperB">upper bound of the actual range in DataB (exclusive)</param>
    private static void LCS(DiffData DataA, int LowerA, int UpperA, DiffData DataB, int LowerB, int UpperB)
    {
        // Debug.Write(2, "LCS", String.Format("Analyse the box: A[{0}-{1}] to B[{2}-{3}]", LowerA, UpperA, LowerB, UpperB));

        // Fast walkthrough equal lines at the start
        while (LowerA < UpperA && LowerB < UpperB && DataA.data[LowerA] == DataB.data[LowerB])
        {
            LowerA++;
            LowerB++;
        }

        // Fast walkthrough equal lines at the end
        while (LowerA < UpperA && LowerB < UpperB && DataA.data[UpperA - 1] == DataB.data[UpperB - 1])
        {
            --UpperA;
            --UpperB;
        }

        if (LowerA == UpperA)
        {
            // mark as inserted lines.
            while (LowerB < UpperB)
                DataB.modified[LowerB++] = true;
        }
        else if (LowerB == UpperB)
        {
            // mark as deleted lines.
            while (LowerA < UpperA)
                DataA.modified[LowerA++] = true;
        }
        else
        {
            // Find the middle snakea and length of an optimal path for A and B
            var smsrd = SMS(DataA, LowerA, UpperA, DataB, LowerB, UpperB);
            // Debug.Write(2, "MiddleSnakeData", String.Format("{0},{1}", smsrd.x, smsrd.y));

            // The path is from LowerX to (x,y) and (x,y) ot UpperX
            LCS(DataA, LowerA, smsrd.x, DataB, LowerB, smsrd.y);
            LCS(DataA, smsrd.x, UpperA, DataB, smsrd.y, UpperB); // 2002.09.20: no need for 2 points
        }
    } // LCS()


    /// <summary>Scan the tables of which lines are inserted and deleted,
    /// producing an edit script in forward order.
    /// </summary>
    /// dynamic array
    private static Item[] CreateDiffs(DiffData DataA, DiffData DataB)
    {
        var a = new ArrayList();

        int StartA, StartB;

        var LineA = 0;
        var LineB = 0;
        while (LineA < DataA.Length || LineB < DataB.Length)
            if (LineA < DataA.Length && !DataA.modified[LineA]
                                     && LineB < DataB.Length && !DataB.modified[LineB])
            {
                // equal lines
                LineA++;
                LineB++;
            }
            else
            {
                // maybe deleted and/or inserted lines
                StartA = LineA;
                StartB = LineB;

                while (LineA < DataA.Length && (LineB >= DataB.Length || DataA.modified[LineA]))
                    // while (LineA < DataA.Length && DataA.modified[LineA])
                    LineA++;

                while (LineB < DataB.Length && (LineA >= DataA.Length || DataB.modified[LineB]))
                    // while (LineB < DataB.Length && DataB.modified[LineB])
                    LineB++;

                if (StartA < LineA || StartB < LineB)
                    // store a new difference-item
                    a.Add(new Item
                    {
                        StartA = StartA,
                        StartB = StartB,
                        deletedA = LineA - StartA,
                        insertedB = LineB - StartB
                    }); // if
            } // if

        // while
        var result = new Item[a.Count];
        a.CopyTo(result);

        return result;
    }
} // class Diff

/// <summary>Data on one input file being compared.
/// </summary>
internal class DiffData
{
    /// <summary>Number of elements (lines).</summary>
    internal int Length;

    /// <summary>Buffer of numbers that will be compared.</summary>
    internal int[] data;

    /// <summary>
    /// Array of booleans that flag for modified data.
    /// This is the result of the diff.
    /// This means deletedA in the first Data or inserted in the second Data.
    /// </summary>
    internal bool[] modified;

    /// <summary>
    /// Initialize the Diff-Data buffer.
    /// </summary>
    /// <param name="initData">reference to the buffer</param>
    internal DiffData(int[] initData)
    {
        data = initData;
        Length = initData.Length;
        modified = new bool[Length + 2];
    } // DiffData
} // class DiffData

// namespace

HicServices / RDMP / 6245535001

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