dir.h

Pegasus is an open-source implementationof the DMTF CIM and WBEM standards. It is designed to be por

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// Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development
// Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.
// Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
// IBM Corp.; EMC Corporation, The Open Group.
// Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
// IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
// Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
// EMC Corporation; VERITAS Software Corporation; The Open Group.
// Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.;
// EMC Corporation; Symantec Corporation; The Open Group.
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#ifndef Pegasus_Dir_h
#define Pegasus_Dir_h

#include <Pegasus/Common/Config.h>
#include <Pegasus/Common/String.h>
#include <Pegasus/Common/InternalException.h>
#include <Pegasus/Common/Linkage.h>
#include <Pegasus/Common/AutoPtr.h>

#if defined(PEGASUS_PLATFORM_SOLARIS_SPARC_GNU)
# include <sys/param.h>
# include <dirent.h>
#endif
#ifdef PEGASUS_OS_ZOS
#include <dirent.h>
#endif

PEGASUS_NAMESPACE_BEGIN

#if defined(PEGASUS_OS_TYPE_WINDOWS)
 #include <io.h>
typedef struct
{
#if _MSC_VER < 1300
    long file;
#else
    intptr_t file;
#endif
    struct _finddata_t findData;
} DirRep;
#elif defined(PEGASUS_OS_TYPE_UNIX) || defined (PEGASUS_OS_VMS)
 #if defined(PEGASUS_OS_SOLARIS)
  #include <sys/param.h>
 #endif /* if defined(PEGASUS_OS_SOLARIS) */

 #include <dirent.h>

 #ifndef PEGASUS_OS_VMS
  #define PEGASUS_HAS_READDIR_R
 #endif /* ifndef PEGASUS_OS_VMS */

struct DirRep
{
    DIR* dir;
 #ifdef PEGASUS_OS_OS400
    struct dirent_lg* entry;
 #else /* ifdef PEGASUS_OS_OS400 */
    struct dirent* entry;
 #endif /* ifdef PEGASUS_OS_OS400 */
 #ifdef PEGASUS_HAS_READDIR_R
  #ifdef PEGASUS_OS_OS400
    struct dirent_lg buffer;
  #else /* ifdef PEGASUS_OS_OS400 */
   #ifdef PEGASUS_OS_SOLARIS
private:
        char buf[sizeof(dirent) + MAXNAMELEN];
public:
        struct dirent &buffer;
        inline DirRep()
                : buffer(*reinterpret_cast<struct dirent *>(buf))
        { }
   #else /* ifdef PEGASUS_OS_SOLARIS */
    struct dirent buffer;
   #endif /* ifdef PEGASUS_OS_SOLARIS */
  #endif /* ifdef PEGASUS_OS_OS400 */
 #endif /* ifdef PEGASUS_HAS_READDIR_R */
};
#endif /* elif defined(PEGASUS_OS_TYPE_UNIX) || defined (PEGASUS_OS_VMS) */

/** The Dir class provides a platform independent way of iterating the
    files in a directory.
*/
class PEGASUS_COMMON_LINKAGE Dir
{
public:

    /** Starts this iterator class on the given path.
        @param String path is the path to the target directory
        @return
        @exception throws CannotOpenDirectory if invalid directory.

        <pre>
        char* path = "."
        try
        {
           for (Dir dir(path); dir.more(); dir.next())
           {
               cout << "name: " << dir.getName() << endl;
           }
        }
        catch (CannotOpenDirectory&)
        {
           // Error!
        }
        </pre>
    */
    Dir(const String& path);

    /** Release any iterator resources. */
    ~Dir();

    /** Return true if there are more file names to iterator. */
    Boolean more() const { return _more; }


    /** Returns the current file name. */
    const char* getName() const;

    /** Advance to next file in directory. */
    void next();

private:

    Boolean _more;
    Boolean _isValid;
    String _path;
    DirRep _dirRep;
};

PEGASUS_NAMESPACE_END

#endif /* Pegasus_Dir_h */