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// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
using System;
using System.IO;
using System.Collections;
using System.Collections.Generic;
using WixToolset.Dtf.WindowsInstaller;
using WixToolset.Dtf.WindowsInstaller.Package;
namespace WixToolset.Dtf.Tools.DDiff
{
public class MsiDiffEngine : IDiffEngine
{
public MsiDiffEngine()
{
}
protected bool IsMsiDatabase(string file)
{
// TODO: use something smarter?
switch(Path.GetExtension(file).ToLower())
{
case ".msi": return true;
case ".msm": return true;
case ".pcp": return true;
default : return false;
}
}
protected bool IsMspPatch(string file)
{
// TODO: use something smarter?
switch(Path.GetExtension(file).ToLower())
{
case ".msp": return true;
default : return false;
}
}
public virtual float GetDiffQuality(string diffInput1, string diffInput2, string[] options, IDiffEngineFactory diffFactory)
{
if(diffInput1 != null && File.Exists(diffInput1) &&
diffInput2 != null && File.Exists(diffInput2) &&
(IsMsiDatabase(diffInput1) || IsMsiDatabase(diffInput2)))
{
return .70f;
}
else if(diffInput1 != null && File.Exists(diffInput1) &&
diffInput2 != null && File.Exists(diffInput2) &&
(IsMspPatch(diffInput1) || IsMspPatch(diffInput2)))
{
return .60f;
}
else
{
return 0;
}
}
public virtual bool GetDiff(string diffInput1, string diffInput2, string[] options, TextWriter diffOutput, string linePrefix, IDiffEngineFactory diffFactory)
{
bool difference = false;
Database db1 = new Database(diffInput1, DatabaseOpenMode.ReadOnly);
Database db2 = new Database(diffInput2, DatabaseOpenMode.ReadOnly);
if(GetSummaryInfoDiff(db1, db2, options, diffOutput, linePrefix, diffFactory)) difference = true;
if(GetDatabaseDiff(db1, db2, options, diffOutput, linePrefix, diffFactory)) difference = true;
if(GetStreamsDiff(db1, db2, options, diffOutput, linePrefix, diffFactory)) difference = true;
db1.Close();
db2.Close();
return difference;
}
protected bool GetSummaryInfoDiff(Database db1, Database db2, string[] options, TextWriter diffOutput, string linePrefix, IDiffEngineFactory diffFactory)
{
bool difference = false;
SummaryInfo summInfo1 = db1.SummaryInfo;
SummaryInfo summInfo2 = db2.SummaryInfo;
if(summInfo1.Title != summInfo2.Title ) { diffOutput.WriteLine("{0}SummaryInformation.Title {{{1}}}->{{{2}}}", linePrefix, summInfo1.Title, summInfo2.Title); difference = true; }
if(summInfo1.Subject != summInfo2.Subject ) { diffOutput.WriteLine("{0}SummaryInformation.Subject {{{1}}}->{{{2}}}", linePrefix, summInfo1.Subject, summInfo2.Subject); difference = true; }
if(summInfo1.Author != summInfo2.Author ) { diffOutput.WriteLine("{0}SummaryInformation.Author {{{1}}}->{{{2}}}", linePrefix, summInfo1.Author, summInfo2.Author); difference = true; }
if(summInfo1.Keywords != summInfo2.Keywords ) { diffOutput.WriteLine("{0}SummaryInformation.Keywords {{{1}}}->{{{2}}}", linePrefix, summInfo1.Keywords, summInfo2.Keywords); difference = true; }
if(summInfo1.Comments != summInfo2.Comments ) { diffOutput.WriteLine("{0}SummaryInformation.Comments {{{1}}}->{{{2}}}", linePrefix, summInfo1.Comments, summInfo2.Comments); difference = true; }
if(summInfo1.Template != summInfo2.Template ) { diffOutput.WriteLine("{0}SummaryInformation.Template {{{1}}}->{{{2}}}", linePrefix, summInfo1.Template, summInfo2.Template); difference = true; }
if(summInfo1.LastSavedBy != summInfo2.LastSavedBy ) { diffOutput.WriteLine("{0}SummaryInformation.LastSavedBy {{{1}}}->{{{2}}}", linePrefix, summInfo1.LastSavedBy, summInfo2.LastSavedBy); difference = true; }
if(summInfo1.RevisionNumber != summInfo2.RevisionNumber) { diffOutput.WriteLine("{0}SummaryInformation.RevisionNumber {{{1}}}->{{{2}}}", linePrefix, summInfo1.RevisionNumber, summInfo2.RevisionNumber); difference = true; }
if(summInfo1.CreatingApp != summInfo2.CreatingApp ) { diffOutput.WriteLine("{0}SummaryInformation.CreatingApp {{{1}}}->{{{2}}}", linePrefix, summInfo1.CreatingApp, summInfo2.CreatingApp); difference = true; }
if(summInfo1.LastPrintTime != summInfo2.LastPrintTime ) { diffOutput.WriteLine("{0}SummaryInformation.LastPrintTime {{{1}}}->{{{2}}}", linePrefix, summInfo1.LastPrintTime, summInfo2.LastPrintTime); difference = true; }
if(summInfo1.CreateTime != summInfo2.CreateTime ) { diffOutput.WriteLine("{0}SummaryInformation.CreateTime {{{1}}}->{{{2}}}", linePrefix, summInfo1.CreateTime, summInfo2.CreateTime); difference = true; }
if(summInfo1.LastSaveTime != summInfo2.LastSaveTime ) { diffOutput.WriteLine("{0}SummaryInformation.LastSaveTime {{{1}}}->{{{2}}}", linePrefix, summInfo1.LastSaveTime, summInfo2.LastSaveTime); difference = true; }
if(summInfo1.CodePage != summInfo2.CodePage ) { diffOutput.WriteLine("{0}SummaryInformation.Codepage {{{1}}}->{{{2}}}", linePrefix, summInfo1.CodePage, summInfo2.CodePage); difference = true; }
if(summInfo1.PageCount != summInfo2.PageCount ) { diffOutput.WriteLine("{0}SummaryInformation.PageCount {{{1}}}->{{{2}}}", linePrefix, summInfo1.PageCount, summInfo2.PageCount); difference = true; }
if(summInfo1.WordCount != summInfo2.WordCount ) { diffOutput.WriteLine("{0}SummaryInformation.WordCount {{{1}}}->{{{2}}}", linePrefix, summInfo1.WordCount, summInfo2.WordCount); difference = true; }
if(summInfo1.CharacterCount != summInfo2.CharacterCount) { diffOutput.WriteLine("{0}SummaryInformation.CharacterCount {{{1}}}->{{{2}}}", linePrefix, summInfo1.CharacterCount, summInfo2.CharacterCount); difference = true; }
if(summInfo1.Security != summInfo2.Security ) { diffOutput.WriteLine("{0}SummaryInformation.Security {{{1}}}->{{{2}}}", linePrefix, summInfo1.Security, summInfo2.Security); difference = true; }
summInfo1.Close();
summInfo2.Close();
return difference;
}
protected bool GetDatabaseDiff(Database db1, Database db2, string[] options, TextWriter diffOutput, string linePrefix, IDiffEngineFactory diffFactory)
{
bool difference = false;
string tempFile = Path.GetTempFileName();
if(db2.GenerateTransform(db1, tempFile))
{
difference = true;
Database db = db1;
db.ViewTransform(tempFile);
string row, column, change;
using (View view = db.OpenView("SELECT `Table`, `Column`, `Row`, `Data`, `Current` " +
"FROM `_TransformView` ORDER BY `Table`, `Row`"))
{
view.Execute();
foreach (Record rec in view) using (rec)
{
column = String.Format("{0} {1}", rec[1], rec[2]);
change = "";
if (rec.IsNull(3))
{
row = "<DDL>";
if (!rec.IsNull(4))
{
change = "[" + rec[5] + "]: " + DecodeColDef(rec.GetInteger(4));
}
}
else
{
row = "[" + String.Join(",", rec.GetString(3).Split('\t')) + "]";
if (rec.GetString(2) != "INSERT" && rec.GetString(2) != "DELETE")
{
column = String.Format("{0}.{1}", rec[1], rec[2]);
change = "{" + rec[5] + "}->{" + rec[4] + "}";
}
}
diffOutput.WriteLine("{0}{1,-25} {2} {3}", linePrefix, column, row, change);
}
}
}
File.Delete(tempFile);
return difference;
}
private string DecodeColDef(int colDef)
{
const int icdLong = 0x0000;
const int icdShort = 0x0400;
const int icdObject = 0x0800;
const int icdString = 0x0C00;
const int icdTypeMask = 0x0F00;
const int icdNullable = 0x1000;
const int icdPrimaryKey = 0x2000;
string def = "";
switch(colDef & (icdTypeMask))
{
case icdLong : def = "LONG"; break;
case icdShort : def = "SHORT"; break;
case icdObject: def = "OBJECT"; break;
case icdString: def = "CHAR[" + (colDef & 0xFF) + "]"; break;
}
if((colDef & icdNullable) != 0)
{
def = def + " NOT NULL";
}
if((colDef & icdPrimaryKey) != 0)
{
def = def + " PRIMARY KEY";
}
return def;
}
protected bool GetStreamsDiff(Database db1, Database db2, string[] options, TextWriter diffOutput, string linePrefix, IDiffEngineFactory diffFactory)
{
bool difference = false;
IList<string> streams1List = db1.ExecuteStringQuery("SELECT `Name` FROM `_Streams`");
IList<string> streams2List = db2.ExecuteStringQuery("SELECT `Name` FROM `_Streams`");
string[] streams1 = new string[streams1List.Count];
string[] streams2 = new string[streams2List.Count];
streams1List.CopyTo(streams1, 0);
streams2List.CopyTo(streams2, 0);
IComparer caseInsComp = CaseInsensitiveComparer.Default;
Array.Sort(streams1, caseInsComp);
Array.Sort(streams2, caseInsComp);
for (int i1 = 0, i2 = 0; i1 < streams1.Length || i2 < streams2.Length; )
{
int comp;
if (i1 == streams1.Length)
{
comp = 1;
}
else if (i2 == streams2.Length)
{
comp = -1;
}
else
{
comp = caseInsComp.Compare(streams1[i1], streams2[i2]);
}
if(comp < 0)
{
diffOutput.WriteLine("{0}< {1}", linePrefix, streams1[i1]);
i1++;
difference = true;
}
else if(comp > 0)
{
diffOutput.WriteLine("{0}> {1}", linePrefix, streams2[i2]);
i2++;
difference = true;
}
else
{
if(streams1[i1] != ("" + ((char)5) + "SummaryInformation"))
{
string tempFile1 = Path.GetTempFileName();
string tempFile2 = Path.GetTempFileName();
using (View view = db1.OpenView(String.Format("SELECT `Data` FROM `_Streams` WHERE `Name` = '{0}'", streams1[i1])))
{
view.Execute();
using (Record rec = view.Fetch())
{
rec.GetStream(1, tempFile1);
}
}
using (View view = db2.OpenView(String.Format("SELECT `Data` FROM `_Streams` WHERE `Name` = '{0}'", streams2[i2])))
{
view.Execute();
using (Record rec = view.Fetch())
{
rec.GetStream(1, tempFile2);
}
}
IDiffEngine diffEngine = diffFactory.GetDiffEngine(tempFile1, tempFile2, options);
StringWriter sw = new StringWriter();
if(diffEngine.GetDiff(tempFile1, tempFile2, options, sw, linePrefix + " ", diffFactory))
{
diffOutput.WriteLine("{0}{1}", linePrefix, streams1[i1]);
diffOutput.Write(sw.ToString());
difference = true;
}
File.Delete(tempFile1);
File.Delete(tempFile2);
}
i1++;
i2++;
}
}
return difference;
}
public virtual IDiffEngine Clone()
{
return new MsiDiffEngine();
}
}
}
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