src/TortoiseMerge/WorkingFile.cpp

   1 // TortoiseGitMerge - a Diff/Patch program
   2
   3 // Copyright (C) 2006-2007, 2011-2012 - TortoiseSVN
   4
   5 // This program is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License
   7 // as published by the Free Software Foundation; either version 2
   8 // of the License, or (at your option) any later version.
   9
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software Foundation,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 #include "stdafx.h"
  20 #include "Workingfile.h"
  21 #include "AppUtils.h"
  22 #include "PathUtils.h"
  23 #include "resource.h"
  24 #include "SmartHandle.h"
  25
  26 CWorkingFile::CWorkingFile(void)
  27 {
  28         ClearStoredAttributes();
  29 }
  30
  31 CWorkingFile::~CWorkingFile(void)
  32 {
  33 }
  34
  35 void CWorkingFile::SetFileName(const CString& newFilename)
  36 {
  37         m_sFilename = newFilename;
  38         m_sFilename.Replace('/', '\\');
  39         m_sDescriptiveName.Empty();
  40         ClearStoredAttributes();
  41 }
  42
  43 void CWorkingFile::SetDescriptiveName(const CString& newDescName)
  44 {
  45         m_sDescriptiveName = newDescName;
  46 }
  47
  48 CString CWorkingFile::GetDescriptiveName()
  49 {
  50         if (m_sDescriptiveName.IsEmpty())
  51         {
  52                 CString sDescriptiveName = CPathUtils::GetFileNameFromPath(m_sFilename);
  53                 WCHAR pathbuf[MAX_PATH] = {0};
  54                 PathCompactPathEx(pathbuf, sDescriptiveName, 50, 0);
  55                 sDescriptiveName = pathbuf;
  56                 return sDescriptiveName;
  57         }
  58         return m_sDescriptiveName;
  59 }
  60 //
  61 // Make an empty file with this name
  62 void CWorkingFile::CreateEmptyFile()
  63 {
  64         CAutoFile hFile = CreateFile(m_sFilename, GENERIC_WRITE, NULL, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
  65 }
  66
  67 // Move the details of the specified file to the current one, and then mark the specified file
  68 // as out of use
  69 void CWorkingFile::TransferDetailsFrom(CWorkingFile& rightHandFile)
  70 {
  71         // We don't do this to files which are already in use
  72         ASSERT(!InUse());
  73
  74         m_sFilename = rightHandFile.m_sFilename;
  75         m_sDescriptiveName = rightHandFile.m_sDescriptiveName;
  76         rightHandFile.SetOutOfUse();
  77         m_attribs = rightHandFile.m_attribs;
  78 }
  79
  80 CString CWorkingFile::GetWindowName() const
  81 {
  82         CString sErrMsg = _T("");
  83         // TortoiseMerge allows non-existing files to be used in a merge
  84         // Inform the user (in a non-intrusive way) if a file is absent
  85         if (! this->Exists())
  86         {
  87                 sErrMsg = CString(MAKEINTRESOURCE(IDS_NOTFOUNDVIEWTITLEINDICATOR));
  88         }
  89
  90         if(m_sDescriptiveName.IsEmpty())
  91         {
  92                 // We don't have a proper name - use the filename part of the path
  93                 // return the filename part of the path.
  94                 return CPathUtils::GetFileNameFromPath(m_sFilename) + _T(" ") + sErrMsg;
  95         }
  96         else if (sErrMsg.IsEmpty())
  97         {
  98                 return m_sDescriptiveName;
  99         }
 100         return m_sDescriptiveName + _T(" ") + sErrMsg;
 101 }
 102
 103 bool CWorkingFile::Exists() const
 104 {
 105         return (!!PathFileExists(m_sFilename));
 106 }
 107
 108 void CWorkingFile::SetOutOfUse()
 109 {
 110         m_sFilename.Empty();
 111         m_sDescriptiveName.Empty();
 112         ClearStoredAttributes();
 113 }
 114
 115
 116 bool CWorkingFile::HasSourceFileChanged() const
 117 {
 118         if (!InUse())
 119         {
 120                 return false;
 121         }
 122         WIN32_FILE_ATTRIBUTE_DATA attribs = {0};
 123         if (PathFileExists(m_sFilename))
 124         {
 125                 if (GetFileAttributesEx(m_sFilename, GetFileExInfoStandard, &attribs))
 126                 {
 127                         if ( (m_attribs.nFileSizeHigh != attribs.nFileSizeHigh) ||
 128                                 (m_attribs.nFileSizeLow != attribs.nFileSizeLow) )
 129                                 return true;
 130                         return ( (CompareFileTime(&m_attribs.ftCreationTime, &attribs.ftCreationTime)!=0) ||
 131                                 (CompareFileTime(&m_attribs.ftLastWriteTime, &attribs.ftLastWriteTime)!=0) );
 132                 }
 133         }
 134
 135         return false;
 136 }
 137
 138 void CWorkingFile::StoreFileAttributes()
 139 {
 140         ClearStoredAttributes();
 141
 142         WIN32_FILE_ATTRIBUTE_DATA attribs = {0};
 143         if (GetFileAttributesEx(m_sFilename, GetFileExInfoStandard, &attribs))
 144         {
 145                 m_attribs = attribs;
 146         }
 147 }
 148
 149 void CWorkingFile::ClearStoredAttributes()
 150 {
 151         static const WIN32_FILE_ATTRIBUTE_DATA attribsEmpty = {0};
 152         m_attribs = attribsEmpty;
 153 }