| private static CombineNoChecks ( string path1, string path2 ) : string | ||
| path1 | string | |
| path2 | string | |
| return | string | |
public static string Combine(string path1, string path2)
{
if (path1 == null || path2 == null)
{
throw new ArgumentNullException(path1 == null ? "path1" : "path2");
}
Path.CheckInvalidPathChars(path1, false);
Path.CheckInvalidPathChars(path2, false);
return(Path.CombineNoChecks(path1, path2));
}
/// <summary>将四个字符串组合成一个路径。</summary>
/// <returns>已组合的路径。</returns>
/// <param name="path1">要组合的第一个路径。</param>
/// <param name="path2">要组合的第二个路径。</param>
/// <param name="path3">要组合的第三个路径。</param>
/// <param name="path4">要组合的第四个路径。</param>
/// <exception cref="T:System.ArgumentException">
/// <paramref name="path1" />、<paramref name="path2" />、<paramref name="path3" /> 或 <paramref name="path4" /> 包含 <see cref="M:System.IO.Path.GetInvalidPathChars" /> 中已定义的一个或多个无效字符。</exception>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="path1" />、<paramref name="path2" />、<paramref name="path3" /> 或 <paramref name="path4" /> 为 null。</exception>
public static string Combine(string path1, string path2, string path3, string path4)
{
if (path1 == null || path2 == null || (path3 == null || path4 == null))
{
throw new ArgumentNullException(path1 == null ? "path1" : (path2 == null ? "path2" : (path3 == null ? "path3" : "path4")));
}
Path.CheckInvalidPathChars(path1, false);
Path.CheckInvalidPathChars(path2, false);
Path.CheckInvalidPathChars(path3, false);
Path.CheckInvalidPathChars(path4, false);
return(Path.CombineNoChecks(Path.CombineNoChecks(Path.CombineNoChecks(path1, path2), path3), path4));
}
internal static FileInfo CreateFileInfo(Directory.SearchData searchData, ref Win32Native.WIN32_FIND_DATA findData)
{
string cFileName = findData.cFileName;
string text = Path.CombineNoChecks(searchData.fullPath, cFileName);
if (!CodeAccessSecurityEngine.QuickCheckForAllDemands())
{
new FileIOPermission(FileIOPermissionAccess.Read, new string[]
{
text
}, false, false).Demand();
}
FileInfo fileInfo = new FileInfo(text, cFileName);
fileInfo.InitializeFrom(ref findData);
return(fileInfo);
}
internal static DirectoryInfo CreateDirectoryInfo(Directory.SearchData searchData, ref Win32Native.WIN32_FIND_DATA findData)
{
string fileName = findData.cFileName;
string fullPath = Path.CombineNoChecks(searchData.fullPath, fileName);
if (!CodeAccessSecurityEngine.QuickCheckForAllDemands())
{
// There is no need to emulate checks that FileIOPermission does if we aren't in full trust.
// The paths we're getting are already tested and/or coming straight from the OS.
new FileIOPermission(FileIOPermissionAccess.Read, new string[] { fullPath + "\\." }, false, false).Demand();
}
DirectoryInfo di = new DirectoryInfo(fullPath, fileName);
di.InitializeFrom(ref findData);
return(di);
}
internal FileSystemEnumerableIterator(string path, string originalUserPath, string searchPattern, SearchOption searchOption, SearchResultHandler <TSource> resultHandler, bool checkHost)
{
this.oldMode = Win32Native.SetErrorMode(1);
this.searchStack = new List <Directory.SearchData>();
string text = FileSystemEnumerableIterator <TSource> .NormalizeSearchPattern(searchPattern);
if (text.Length == 0)
{
this.empty = true;
return;
}
this._resultHandler = resultHandler;
this.searchOption = searchOption;
this.fullPath = Path.GetFullPathInternal(path);
string fullSearchString = FileSystemEnumerableIterator <TSource> .GetFullSearchString(this.fullPath, text);
this.normalizedSearchPath = Path.GetDirectoryName(fullSearchString);
if (CodeAccessSecurityEngine.QuickCheckForAllDemands())
{
FileIOPermission.EmulateFileIOPermissionChecks(this.fullPath);
FileIOPermission.EmulateFileIOPermissionChecks(this.normalizedSearchPath);
}
else
{
new FileIOPermission(FileIOPermissionAccess.PathDiscovery, new string[]
{
Directory.GetDemandDir(this.fullPath, true),
Directory.GetDemandDir(this.normalizedSearchPath, true)
}, false, false).Demand();
}
this._checkHost = checkHost;
this.searchCriteria = FileSystemEnumerableIterator <TSource> .GetNormalizedSearchCriteria(fullSearchString, this.normalizedSearchPath);
string directoryName = Path.GetDirectoryName(text);
string path2 = originalUserPath;
if (directoryName != null && directoryName.Length != 0)
{
path2 = Path.CombineNoChecks(path2, directoryName);
}
this.userPath = path2;
this.searchData = new Directory.SearchData(this.normalizedSearchPath, this.userPath, searchOption);
this.CommonInit();
}
private void AddSearchableDirsToStack(Directory.SearchData localSearchData)
{
string fileName = Path.InternalCombine(localSearchData.fullPath, "*");
SafeFindHandle safeFindHandle = null;
Win32Native.WIN32_FIND_DATA win32_FIND_DATA = default(Win32Native.WIN32_FIND_DATA);
try
{
safeFindHandle = Win32Native.FindFirstFile(fileName, ref win32_FIND_DATA);
if (safeFindHandle.IsInvalid)
{
int lastWin32Error = Marshal.GetLastWin32Error();
if (lastWin32Error == 2 || lastWin32Error == 18 || lastWin32Error == 3)
{
return;
}
this.HandleError(lastWin32Error, localSearchData.fullPath);
}
int num = 0;
do
{
if (win32_FIND_DATA.IsNormalDirectory)
{
string cFileName = win32_FIND_DATA.cFileName;
string text = Path.CombineNoChecks(localSearchData.fullPath, cFileName);
string text2 = Path.CombineNoChecks(localSearchData.userPath, cFileName);
SearchOption searchOption = localSearchData.searchOption;
Directory.SearchData item = new Directory.SearchData(text, text2, searchOption);
this.searchStack.Insert(num++, item);
}
}while (Win32Native.FindNextFile(safeFindHandle, ref win32_FIND_DATA));
}
finally
{
if (safeFindHandle != null)
{
safeFindHandle.Dispose();
}
}
}
internal override string CreateObject(Directory.SearchData searchData, ref Win32Native.WIN32_FIND_DATA findData)
{
return(Path.CombineNoChecks(searchData.userPath, findData.cFileName));
}
[System.Security.SecurityCritical] // auto-generated
private void AddSearchableDirsToStack(Directory.SearchData localSearchData)
{
Contract.Requires(localSearchData != null);
String searchPath = Path.InternalCombine(localSearchData.fullPath, "*");
SafeFindHandle hnd = null;
Win32Native.WIN32_FIND_DATA data = new Win32Native.WIN32_FIND_DATA();
try
{
// Get all files and dirs
hnd = Win32Native.FindFirstFile(searchPath, ref data);
if (hnd.IsInvalid)
{
int hr = Marshal.GetLastWin32Error();
// This could happen if the dir doesn't contain any files.
// Continue with the recursive search though, eventually
// searchStack will become empty
if (hr == Win32Native.ERROR_FILE_NOT_FOUND || hr == Win32Native.ERROR_NO_MORE_FILES || hr == Win32Native.ERROR_PATH_NOT_FOUND)
{
return;
}
HandleError(hr, localSearchData.fullPath);
}
// Add subdirs to searchStack. Exempt ReparsePoints as appropriate
int incr = 0;
do
{
if (data.IsNormalDirectory)
{
string fileName = data.cFileName;
string tempFullPath = Path.CombineNoChecks(localSearchData.fullPath, fileName);
string tempUserPath = Path.CombineNoChecks(localSearchData.userPath, fileName);
SearchOption option = localSearchData.searchOption;
#if EXCLUDE_REPARSEPOINTS
// Traverse reparse points depending on the searchoption specified
if ((searchDataSubDir.searchOption == SearchOption.AllDirectories) && (0 != (data.dwFileAttributes & Win32Native.FILE_ATTRIBUTE_REPARSE_POINT)))
{
option = SearchOption.TopDirectoryOnly;
}
#endif
// Setup search data for the sub directory and push it into the stack
Directory.SearchData searchDataSubDir = new Directory.SearchData(tempFullPath, tempUserPath, option);
searchStack.Insert(incr++, searchDataSubDir);
}
} while (Win32Native.FindNextFile(hnd, ref data));
// We don't care about errors here
}
finally
{
if (hnd != null)
{
hnd.Dispose();
}
}
}
internal FileSystemEnumerableIterator(String path, String originalUserPath, String searchPattern, SearchOption searchOption, SearchResultHandler <TSource> resultHandler, bool checkHost)
{
Contract.Requires(path != null);
Contract.Requires(originalUserPath != null);
Contract.Requires(searchPattern != null);
Contract.Requires(searchOption == SearchOption.AllDirectories || searchOption == SearchOption.TopDirectoryOnly);
Contract.Requires(resultHandler != null);
oldMode = Win32Native.SetErrorMode(Win32Native.SEM_FAILCRITICALERRORS);
searchStack = new List <Directory.SearchData>();
String normalizedSearchPattern = NormalizeSearchPattern(searchPattern);
if (normalizedSearchPattern.Length == 0)
{
empty = true;
}
else
{
_resultHandler = resultHandler;
this.searchOption = searchOption;
fullPath = Path.GetFullPathInternal(path);
String fullSearchString = GetFullSearchString(fullPath, normalizedSearchPattern);
normalizedSearchPath = Path.GetDirectoryName(fullSearchString);
if (CodeAccessSecurityEngine.QuickCheckForAllDemands())
{
// Full trust, just need to validate incoming paths
// (we don't need to get the demand directory as it has no impact)
FileIOPermission.EmulateFileIOPermissionChecks(fullPath);
FileIOPermission.EmulateFileIOPermissionChecks(normalizedSearchPath);
}
else
{
// Not full trust, need to check for rights
string[] demandPaths = new string[2];
// Any illegal chars such as *, ? will be caught by FileIOPermission.HasIllegalCharacters
demandPaths[0] = Directory.GetDemandDir(fullPath, true);
// For filters like foo\*.cs we need to verify if the directory foo is not denied access.
// Do a demand on the combined path so that we can fail early in case of deny
demandPaths[1] = Directory.GetDemandDir(normalizedSearchPath, true);
new FileIOPermission(FileIOPermissionAccess.PathDiscovery, demandPaths, false, false).Demand();
}
_checkHost = checkHost;
// normalize search criteria
searchCriteria = GetNormalizedSearchCriteria(fullSearchString, normalizedSearchPath);
// fix up user path
String searchPatternDirName = Path.GetDirectoryName(normalizedSearchPattern);
String userPathTemp = originalUserPath;
if (searchPatternDirName != null && searchPatternDirName.Length != 0)
{
userPathTemp = Path.CombineNoChecks(userPathTemp, searchPatternDirName);
}
this.userPath = userPathTemp;
searchData = new Directory.SearchData(normalizedSearchPath, this.userPath, searchOption);
CommonInit();
}
}