File Existance in Windows
Revision as of 14:44, 21 July 2008 by PeterHarding (talk | contribs)
Example
See - http://msdn.microsoft.com/en-us/library/system.io.directory.exists.aspx
// For File::Exists, Directory::Exists using namespace System; using namespace System::IO; using namespace System::Collections; // Insert logic for processing found files here. void ProcessFile( String^ path ) { Console::WriteLine( "Processed file '{0}'.", path ); } // Process all files in the directory passed in, recurse on any directories // that are found, and process the files they contain. void ProcessDirectory( String^ targetDirectory ) { // Process the list of files found in the directory. array<String^>^fileEntries = Directory::GetFiles( targetDirectory ); IEnumerator^ files = fileEntries->GetEnumerator(); while ( files->MoveNext() ) { String^ fileName = safe_cast<String^>(files->Current); ProcessFile( fileName ); } // Recurse into subdirectories of this directory. array<String^>^subdirectoryEntries = Directory::GetDirectories( targetDirectory ); IEnumerator^ dirs = subdirectoryEntries->GetEnumerator(); while ( dirs->MoveNext() ) { String^ subdirectory = safe_cast<String^>(dirs->Current); ProcessDirectory( subdirectory ); } } int main( int argc, char *argv[] ) { for ( int i = 1; i < argc; i++ ) { String^ path = gcnew String(argv[ i ]); if ( File::Exists( path ) ) { // This path is a file ProcessFile( path ); } else if ( Directory::Exists( path ) ) { // This path is a directory ProcessDirectory( path ); } else { Console::WriteLine( "{0} is not a valid file or directory.", path ); } } }
Create a Path to Make Sure it Exists
BOOL MakeSurePathExists( CString &Path, bool FilenameIncluded=true) { int Pos=0; while ((Pos=Path.Find('\\',Pos+1))!=-1) CreateDirectory(Path.Left(Pos),NULL); if(!FilenameIncluded) CreateDirectory(Path,NULL); return ((!FilenameIncluded)?!_access(Path,0): !_access(Path.Left(Path.ReverseFind('\\')),0)); }
int make_sure_path_exists( const char *iPath, bool FilenameIncluded=true) { char *Path=(char*)iPath; char *TmpPath=Path; char TmpSmb=0; char *LastDPtr=NULL; while((TmpPath=strpbrk(TmpPath+1,"\\/"))) { TmpSmb = Path[TmpPath - Path]; Path[TmpPath-Path] = 0; CreateDirectory(Path,NULL); Path[TmpPath-Path] = TmpSmb; LastDPtr = TmpPath; } int Res = 1; if(!FilenameIncluded) { CreateDirectory(iPath, NULL); Res = !_access(iPath, 0); } else { if(LastDPtr) { Path = (char*)iPath; TmpSmb = Path[LastDPtr - Path]; Path[LastDPtr - Path] = 0; Res = !_access(Path, 0); Path[LastDPtr - Path] = TmpSmb; } } return Res; }