void CSVNStatusCache::Create()
{
ATLASSERT(m_pInstance == NULL);
if (m_pInstance != NULL)
return;
m_pInstance = new CSVNStatusCache;
m_pInstance->watcher.SetFolderCrawler(&m_pInstance->m_folderCrawler);
#define LOADVALUEFROMFILE(x) if (fread(&x, sizeof(x), 1, pFile)!=1) goto exit;
#define LOADVALUEFROMFILE2(x) if (fread(&x, sizeof(x), 1, pFile)!=1) goto error;
unsigned int value = (unsigned int)-1;
FILE * pFile = NULL;
// find the location of the cache
CString path = GetSpecialFolder(FOLDERID_LocalAppData);
CString path2;
if (!path.IsEmpty())
{
path += L"\\TSVNCache";
if (!PathIsDirectory(path))
{
DeleteFile(path);
if (CreateDirectory(path, NULL)==0)
goto error;
}
path += STATUSCACHEFILENAME;
// in case the cache file is corrupt, we could crash while
// reading it! To prevent crashing every time once that happens,
// we make a copy of the cache file and use that copy to read from.
// if that copy is corrupt, the original file won't exist anymore
// and the second time we start up and try to read the file,
// it's not there anymore and we start from scratch without a crash.
path2 = path;
path2 += L"2";
DeleteFile(path2);
CopyFile(path, path2, FALSE);
DeleteFile(path);
pFile = _tfsopen(path2, L"rb", _SH_DENYNO);
if (pFile)
{
try
{
LOADVALUEFROMFILE(value);
if (value != CACHEDISKVERSION)
{
goto error;
}
int mapsize = 0;
LOADVALUEFROMFILE(mapsize);
for (int i=0; i<mapsize; ++i)
{
LOADVALUEFROMFILE2(value);
if (value > MAX_PATH)
goto error;
if (value)
{
CString sKey;
if (fread(sKey.GetBuffer(value+1), sizeof(TCHAR), value, pFile)!=value)
{
sKey.ReleaseBuffer(0);
goto error;
}
sKey.ReleaseBuffer(value);
std::unique_ptr<CCachedDirectory> cacheddir (new CCachedDirectory());
if (!cacheddir.get() || !cacheddir->LoadFromDisk(pFile))
{
cacheddir.reset();
goto error;
}
CTSVNPath KeyPath = CTSVNPath(sKey);
if (m_pInstance->IsPathAllowed(KeyPath))
{
// only add the path to the watch list if it is versioned
if ((cacheddir->GetCurrentFullStatus() != svn_wc_status_unversioned)&&(cacheddir->GetCurrentFullStatus() != svn_wc_status_none))
m_pInstance->watcher.AddPath(KeyPath, false);
m_pInstance->m_directoryCache[KeyPath] = cacheddir.release();
// do *not* add the paths for crawling!
// because crawled paths will trigger a shell
// notification, which makes the desktop flash constantly
// until the whole first time crawling is over
// m_pInstance->AddFolderForCrawling(KeyPath);
}
}
}
}
catch (CAtlException)
{
goto error;
}
}
}
exit:
if (pFile)
fclose(pFile);
if (!path2.IsEmpty())
DeleteFile(path2);
m_pInstance->watcher.ClearInfoMap();
CTraceToOutputDebugString::Instance()(__FUNCTION__ ": cache loaded from disk successfully!\n");
return;
error:
if (pFile)
fclose(pFile);
if (!path2.IsEmpty())
DeleteFile(path2);
m_pInstance->watcher.ClearInfoMap();
Destroy();
m_pInstance = new CSVNStatusCache;
CTraceToOutputDebugString::Instance()(__FUNCTION__ ": cache not loaded from disk\n");
}
void CSVNStatusCache::Create()
{
ATLASSERT(m_pInstance == NULL);
if (m_pInstance != NULL)
return;
m_pInstance = new CSVNStatusCache;
m_pInstance->watcher.SetFolderCrawler(&m_pInstance->m_folderCrawler);
#define LOADVALUEFROMFILE(x) if (fread(&x, sizeof(x), 1, pFile)!=1) goto exit;
#define LOADVALUEFROMFILE2(x) if (fread(&x, sizeof(x), 1, pFile)!=1) goto error;
unsigned int value = (unsigned int)-1;
FILE * pFile = NULL;
// find the location of the cache
TCHAR path[MAX_PATH]; //MAX_PATH ok here.
TCHAR path2[MAX_PATH];
if (SHGetFolderPath(NULL, CSIDL_LOCAL_APPDATA, NULL, SHGFP_TYPE_CURRENT, path)==S_OK)
{
_tcscat_s(path, MAX_PATH, _T("\\TSVNCache"));
if (!PathIsDirectory(path))
{
if (CreateDirectory(path, NULL)==0)
goto error;
}
_tcscat_s(path, MAX_PATH, STATUSCACHEFILENAME);
// in case the cache file is corrupt, we could crash while
// reading it! To prevent crashing every time once that happens,
// we make a copy of the cache file and use that copy to read from.
// if that copy is corrupt, the original file won't exist anymore
// and the second time we start up and try to read the file,
// it's not there anymore and we start from scratch without a crash.
_tcscpy_s(path2, MAX_PATH, path);
_tcscat_s(path2, MAX_PATH, _T("2"));
DeleteFile(path2);
CopyFile(path, path2, FALSE);
DeleteFile(path);
pFile = _tfsopen(path2, _T("rb"), _SH_DENYNO);
if (pFile)
{
try
{
LOADVALUEFROMFILE(value);
if (value != CACHEDISKVERSION)
{
goto error;
}
int mapsize = 0;
LOADVALUEFROMFILE(mapsize);
for (int i=0; i<mapsize; ++i)
{
LOADVALUEFROMFILE2(value);
if (value > MAX_PATH)
goto error;
if (value)
{
CString sKey;
if (fread(sKey.GetBuffer(value+1), sizeof(TCHAR), value, pFile)!=value)
{
sKey.ReleaseBuffer(0);
goto error;
}
sKey.ReleaseBuffer(value);
std::auto_ptr<CCachedDirectory> cacheddir (new CCachedDirectory());
if (!cacheddir.get() || !cacheddir->LoadFromDisk(pFile))
{
cacheddir.reset();
goto error;
}
CTSVNPath KeyPath = CTSVNPath(sKey);
if (m_pInstance->IsPathAllowed(KeyPath))
{
// only add the path to the watch list if it is versioned
if ((cacheddir->GetCurrentFullStatus() != svn_wc_status_unversioned)&&(cacheddir->GetCurrentFullStatus() != svn_wc_status_none))
m_pInstance->watcher.AddPath(KeyPath, false);
m_pInstance->m_directoryCache[KeyPath] = cacheddir.release();
// do *not* add the paths for crawling!
// because crawled paths will trigger a shell
// notification, which makes the desktop flash constantly
// until the whole first time crawling is over
// m_pInstance->AddFolderForCrawling(KeyPath);
}
}
}
}
catch (CAtlException)
{
goto error;
}
}
}
exit:
if (pFile)
fclose(pFile);
DeleteFile(path2);
m_pInstance->watcher.ClearInfoMap();
ATLTRACE("cache loaded from disk successfully!\n");
return;
error:
fclose(pFile);
DeleteFile(path2);
m_pInstance->watcher.ClearInfoMap();
if (m_pInstance)
{
m_pInstance->Stop();
Sleep(100);
}
delete m_pInstance;
m_pInstance = new CSVNStatusCache;
ATLTRACE("cache not loaded from disk\n");
}
