hxdir.cpp
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上传日期:2007-06-06
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文件大小:8k
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include <sys/stat.h>
- #include <errno.h>
- #if defined (_SOLARIS) || defined (_FREEBSD) || defined (_OPENBSD) || defined (_NETBSD)
- #include <dirent.h>
- #elif defined (__hpux)
- #include <sys/dirent.h>
- #else
- #include <sys/dir.h>
- #endif
- #ifdef _BEOS
- #include <fcntl.h>
- #endif
- #include "findfile.h"
- #include "hxdir.h"
- #include "hxstrutl.h"
- #include "hxheap.h"
- #ifdef _DEBUG
- #undef HX_THIS_FILE
- static const char HX_THIS_FILE[] = __FILE__;
- #endif
- CHXDirectory::CHXDirectory()
- : m_pFileFinder(NULL)
- {
- }
- CHXDirectory::~CHXDirectory()
- {
- HX_DELETE(m_pFileFinder);
- }
- // Locate a writable spot for a temp directory.
- // This is done by checking a number of possible locations
- // in the following order of preference:
- //
- // 1) the current working directory
- // 2) "/tmp"
- static BOOL
- isWritable(const char* szPath)
- {
- struct stat statbuf;
- stat(szPath, &statbuf);
- if ((statbuf.st_mode & S_IWRITE) != 0)
- return TRUE;
- else
- return FALSE;
- }
- BOOL
- CHXDirectory::SetTempPath(HXXHANDLE /* hpsHandle */, const char* szRelPath)
- {
- // caller must specify a sub-directory
- if (szRelPath == NULL || szRelPath[0] == ' ') return FALSE;
- m_strPath.Empty();
- // try current working directory
- if (!SetCurrentDir() || !isWritable(m_strPath))
- {
- // go with /tmp
- m_strPath = "/tmp";
- if (!isWritable(m_strPath)) return FALSE;
- }
-
- // now append the sub-directory, separating if necessary
- if (m_strPath.Right(1) != OS_SEPARATOR_STRING && szRelPath[0] != OS_SEPARATOR_CHAR)
- {
- m_strPath += OS_SEPARATOR_STRING;
- }
- m_strPath += szRelPath;
- return TRUE;
- }
- /* Creates directory. */
- BOOL
- CHXDirectory::Create()
- {
- mkdir((const char*)m_strPath, 0755);
- return IsValid();
- }
- /* Checks if directory exists. */
- BOOL
- CHXDirectory::IsValid()
- {
- DIR* pDir = NULL;
- if(m_strPath.IsEmpty())
- return FALSE;
- pDir = opendir(m_strPath);
- if (pDir)
- {
- closedir(pDir);
- return TRUE;
- }
- return FALSE;
- }
- /* Deletes empty directory. */
- BOOL
- CHXDirectory::DeleteDirectory()
- {
- if(!rmdir(m_strPath))
- return TRUE;
- return FALSE;
- }
- /* Starts enumeration process. */
- CHXDirectory::FSOBJ
- CHXDirectory::FindFirst(const char* szPattern, char* szPath, UINT16 nSize)
- {
- FSOBJ RetVal = FSOBJ_NOTVALID;
- char* szMatch = NULL;
- char* szMatchPath = NULL;
- BOOL bDone = FALSE;
- struct stat statbuf;
- // Find the first file that matches the specified pattern
- HX_DELETE(m_pFileFinder);
- m_pFileFinder = CFindFile::CreateFindFile(m_strPath, 0, szPattern);
- if (!m_pFileFinder)
- {
- return RetVal;
- }
- szMatch = m_pFileFinder->FindFirst();
- while (szMatch && !bDone)
- {
- szMatchPath = m_pFileFinder->GetCurFilePath();
- if (lstat(szMatchPath, &statbuf) < 0)
- {
- return RetVal;
- }
- if (S_ISDIR(statbuf.st_mode) != 0 && IsValidFileDirName(szMatch))
- {
- RetVal = FSOBJ_DIRECTORY;
- bDone = TRUE;
- }
- else if (IsValidFileDirName(szMatch))
- {
- RetVal = FSOBJ_FILE;
- bDone = TRUE;
- }
- else
- {
- // If we couldn't use this one, find another
- szMatch = m_pFileFinder->FindNext();
- }
- if (RetVal != FSOBJ_NOTVALID)
- {
- SafeStrCpy(szPath, szMatchPath, nSize);
- }
- }
- return RetVal;
- }
- /* Continues enumeration process. */
- CHXDirectory::FSOBJ
- CHXDirectory::FindNext(char* szPath, UINT16 nSize)
- {
- FSOBJ RetVal = FSOBJ_NOTVALID;
- char* szMatch = NULL;
- char* szMatchPath = NULL;
- BOOL bDone = FALSE;
- struct stat statbuf;
-
- szMatch = m_pFileFinder->FindNext();
- while (szMatch && !bDone)
- {
- szMatchPath = m_pFileFinder->GetCurFilePath();
-
- if (lstat(szMatchPath, &statbuf) < 0)
- {
- return RetVal;
- }
- if (S_ISDIR(statbuf.st_mode) != 0 && IsValidFileDirName(szMatch))
- {
- RetVal = FSOBJ_DIRECTORY;
- bDone = TRUE;
- }
- else if (IsValidFileDirName(szMatch))
- {
- RetVal = FSOBJ_FILE;
- bDone = TRUE;
- }
- else
- {
- // If we couldn't use this one, find another
- szMatch = m_pFileFinder->FindNext();
- }
- if (RetVal != FSOBJ_NOTVALID)
- {
- SafeStrCpy(szPath, szMatchPath, nSize);
- }
- }
- return RetVal;
- }
- BOOL
- CHXDirectory::DeleteFile(const char* szRelPath)
- {
- BOOL RetVal = FALSE;
- CHXString strPath;
- if(!szRelPath)
- return FALSE;
- strPath = szRelPath;
- chmod((const char*)strPath, S_IREAD | S_IWRITE);
- if(!unlink((const char*)strPath) || errno != EACCES)
- RetVal = TRUE;
- return RetVal;
- }
- /* Sets itself to current directory. */
- BOOL
- CHXDirectory::SetCurrentDir()
- {
- BOOL bRetVal = TRUE;
- if(!getcwd(m_strPath.GetBuffer(_MAX_PATH + 1), _MAX_PATH))
- bRetVal = FALSE;
- m_strPath.ReleaseBuffer();
- return bRetVal;
- }
- /* Makes itself a current directory. */
- BOOL
- CHXDirectory::MakeCurrentDir()
- {
- if(!chdir((const char*)m_strPath))
- return TRUE;
- return FALSE;
- }
- UINT32
- CHXDirectory::Rename(const char* szOldName, const char* szNewName)
- {
- if ((szOldName == NULL) || (szNewName == NULL))
- {
- HX_ASSERT(FALSE);
- return (UINT32)HXR_FAIL;
- }
- UINT32 theError = (UINT32)HXR_FAIL;
- if(unlink(szNewName) == -1 && errno == EACCES)
- {
- chmod(szNewName, S_IREAD | S_IWRITE);
- if(unlink(szNewName) == -1 && errno == EACCES)
- return (UINT32)HXR_FAIL;
- if(!rename(szOldName, szNewName))
- theError = (UINT32)HXR_OK;
- chmod(szNewName, S_IREAD);
- }
- else
- {
- if(!rename(szOldName, szNewName))
- theError = (UINT32)HXR_OK;
- }
- return theError;
- }
- BOOL
- CHXDirectory::IsValidFileDirName(const char* szPath)
- {
- if(!strcmp(szPath, ".") || !strcmp(szPath, ".."))
- return FALSE;
- return TRUE;
- }