filespecutils.cpp
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上传日期:2007-06-06
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- /* ***** 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 "filespecutils.h"
- #include "hxtick.h"
- #include "hxrand.h"
- #include "dbcs.h"
- #define NFS_SUPER_MAGIC 0x6969
- #define SMB_SUPER_MAGIC 0x517B
- //////////////////////////////////////////////////////////
- //
- // Utility base class -- CHXFileSpecUtils
- //
- //////////////////////////////////////////////////////////
- //******************************************************************************
- #if defined(_FREEBSD) || defined(_OPENBSD) || defined(_NETBSD) || defined (_OSF1) || defined(_MAC_UNIX)
- #include <sys/mount.h>
- #else
- #include <sys/vfs.h>
- #endif
- #if defined(_SOLARIS) || defined(_LSB_)
- #include <sys/statfs.h>
- #include <sys/statvfs.h>
- #endif
- #include <sys/stat.h>
- #include <dirent.h>
- #include <sys/types.h>
- #define ONEGIG (1<<30)
- #if defined(_OSF1) || defined(_AIX)
- #define STATFS_PATH_TYPE char*
- #else
- #define STATFS_PATH_TYPE const char*
- #endif
- #if defined(_SOLARIS) || defined(_LSB_)
- #define HXStatfsStruct struct statvfs
- #define HXStatfs(path,sf) statvfs((STATFS_PATH_TYPE)(path),(sf))
- #define HXStatfsBlockSize(sf) ((sf).f_blocks)
- #else
- #define HXStatfsStruct struct statfs
- #define HXStatfs(path,sf) statfs((STATFS_PATH_TYPE)(path),(sf))
- #define HXStatfsBlockSize(sf) ((sf).f_bsize)
- #endif
- HX_RESULT CHXFileSpecUtils::GetFreeSpaceOnDisk(const CHXDirSpecifier& volSpec, INT64& freeSpace)
- {
- HX_RESULT result = HXR_NOTIMPL;
- const char *szPath = volSpec.GetPathName();
-
- HXStatfsStruct sf;
- if (-1 != HXStatfs(szPath, &sf))
- {
- if (geteuid())
- {
- freeSpace = (UINT64)sf.f_bavail * (UINT64)HXStatfsBlockSize(sf);
- }
- else
- {
- freeSpace = (UINT64)sf.f_bfree * (UINT64)HXStatfsBlockSize(sf);
- }
- result = HXR_OK;
- }
- else
- {
- perror("statfs");
- freeSpace = (INT64)ONEGIG;
- }
- return result;
- }
- //******************************************************************************
- HX_RESULT CHXFileSpecUtils::GetTotalSpaceOnDisk(const CHXDirSpecifier& volSpec,
- INT64& totalSpace)
- {
- HX_RESULT result = HXR_NOTIMPL;
- const char *szPath = volSpec.GetPathName();
-
- HXStatfsStruct sf;
- if (-1 != HXStatfs(szPath, &sf))
- {
- totalSpace = (UINT64)sf.f_blocks * (UINT64)HXStatfsBlockSize(sf);
- result = HXR_OK;
- }
- else
- {
- perror("statfs");
- totalSpace = (INT64)ONEGIG;
- }
- return result;
- }
- //******************************************************************************
- BOOL CHXFileSpecUtils::IsDiskEjectable(const CHXDirSpecifier& volSpec)
- {
- return FALSE;
- }
- // IsLocal returns TRUE if the file or directory is on a local volume
- // (not on a server)
- //******************************************************************************
- /* Include correct headers to get more fs types below... */
- BOOL CHXFileSpecUtils::IsDiskLocal(const CHXDirSpecifier& volSpec)
- {
- BOOL result = TRUE;
- const char *szPath = volSpec.GetPathName();
-
- HXStatfsStruct sf;
- if (-1 != HXStatfs(szPath, &sf))
- {
- #if !defined(_LSB_)
- #if defined(_SOLARIS)
- if (strcmp("nfs", sf.f_basetype) == 0)
- {
- result = FALSE;
- }
- #elif defined(_OPENBSD)
- if (strcmp("nfs", sf.f_fstypename) == 0) //XXX untested
- {
- result = FALSE;
- }
- #else
- if (sf.f_type == NFS_SUPER_MAGIC ||
- sf.f_type == SMB_SUPER_MAGIC)
- {
- result = FALSE;
- }
- #endif
- #endif
- }
- else
- {
- perror("statfs");
- }
- return result;
- }
- // file/dir utilities
- //******************************************************************** **********
- HX_RESULT CHXFileSpecUtils::RemoveDir(const CHXDirSpecifier& dirSpec)
- {
- if (-1 != rmdir(dirSpec.GetPathName()))
- {
- return HXR_OK;
- }
- return HXR_FAILED;
- };
- //******************************************************************** **********
- HX_RESULT CHXFileSpecUtils::RemoveFile(const CHXFileSpecifier& fileSpec)
- {
- if (-1 != unlink(fileSpec.GetPathName()))
- {
- return HXR_OK;
- }
- return HXR_FAILED;
- };
- //******************************************************************************
- HX_RESULT CHXFileSpecUtils::GetFileSize(const CHXFileSpecifier& fileSpec, INT64& fSize)
- {
- HX_RESULT result = HXR_FAIL;
- struct stat st;
- if (-1 != stat(fileSpec.GetPathName(), &st))
- {
- fSize = st.st_size;
- result = HXR_OK;
- }
- return result;
- }
- //******************************************************************************
- HX_RESULT CHXFileSpecUtils::GetDirectorySize(const CHXDirSpecifier& dirSpec, BOOL shouldDescend, INT64& fSize)
- {
- DIR *dir = opendir(dirSpec.GetPathName());
- HX_RESULT result = HXR_FAIL;
- while (struct dirent *dirent_ = readdir(dir))
- {
- result = HXR_OK;
- struct stat st;
- if (-1 != stat(dirent_->d_name, &st))
- {
- if (S_ISDIR(st.st_mode))
- {
- if (shouldDescend)
- {
- GetDirectorySize(CHXDirSpecifier(dirent_->d_name), TRUE, fSize);
- }
- }
- else
- {
- fSize = st.st_size;
- }
- }
- }
- if (dir)
- {
- closedir(dir);
- }
- return result;
- }
- //******************************************************************************
- CHXFileSpecifier CHXFileSpecUtils::GetCurrentApplication(void)
- {
- /* AFAIK there is no way to implement this. Prove me wrong */
- CHXFileSpecifier spec;
- return spec;
- }
- //******************************************************************************
- CHXDirSpecifier CHXFileSpecUtils::GetCurrentApplicationDir(void)
- {
- /* AFAIK there is no way to implement this. Prove me wrong */
- CHXDirSpecifier dirSpec;
- return dirSpec;
- }
- //******************************************************************************
- BOOL CHXFileSpecUtils::FileExists(const CHXFileSpecifier& fileSpec)
- {
- BOOL result = FALSE;
- struct stat st;
- if (-1 != stat(fileSpec.GetPathName(), &st))
- {
- result = !S_ISDIR(st.st_mode);
- }
- return result;
- }
- //******************************************************************************
- BOOL CHXFileSpecUtils::DirectoryExists(const CHXDirSpecifier& dirSpec)
- {
- BOOL result = FALSE;
- struct stat st;
- if (-1 != stat(dirSpec.GetPathName(), &st))
- {
- result = S_ISDIR(st.st_mode);
- }
- return result;
- }
- //******************************************************************************
- HX_RESULT CHXFileSpecUtils::CreateDir(const CHXDirSpecifier& dirSpec)
- {
- if (-1 != mkdir(dirSpec.GetPathName(), 0700))
- return TRUE;
-
- return FALSE;
- }
- //******************************************************************************
- static CHXFileSpecifier GetUniqueFileSpecInternal(const CHXDirSpecifier& locationSpec,
- const char *pszNameFirst, const char *pszTemplate,
- const char *pszWildcard, UINT32 nStartNum);
-
- const UINT32 kNumWrapValue = 9999+1; // limit insertions to 4-digit numbers
-
- CHXFileSpecifier CHXFileSpecUtils::GetUniqueFileSpec(const CHXDirSpecifier& locationSpec,
- const char *pszNameFirst, const char *pszTemplate,
- const char *pszWildcard)
- {
- return GetUniqueFileSpecInternal(locationSpec, pszNameFirst, pszTemplate, pszWildcard, 0);
- }
- CHXFileSpecifier CHXFileSpecUtils::GetUniqueTempFileSpec(const CHXDirSpecifier& locationSpec,
- const char *pszTemplate, const char *pszWildcard)
- {
- CMultiplePrimeRandom rand(HX_GET_TICKCOUNT());
-
- UINT32 num;
-
- num = rand.GetRandomNumber();
-
- num %= kNumWrapValue;
-
- if (num == 0 || num == 1) num = 2;
- return GetUniqueFileSpecInternal(locationSpec, NULL, pszTemplate, pszWildcard, num);
- }
- static CHXFileSpecifier GetUniqueFileSpecInternal(const CHXDirSpecifier& locationSpec,
- const char *pszNameFirst, const char *pszTemplate,
- const char *pszWildcard, UINT32 nStartNum)
- {
- CHXFileSpecifier resultFileSpec;
-
- require_return(locationSpec.IsSet(), resultFileSpec);
- require_return(pszTemplate != NULL && pszWildcard != NULL, resultFileSpec);
- require_return(pszNameFirst != NULL || nStartNum != 0, resultFileSpec);
-
- CHXFileSpecifier testFileSpec;
- CHXDirSpecifier testDirSpec;
- CHXString strNumber;
- CHXString strName;
- UINT32 nCurrentNum;
-
- nCurrentNum = nStartNum;
- while (1)
- {
- // if the number is non-zero, make a string from the template;
- // if the number is zero, user the initial name string
- if (nCurrentNum == 0)
- {
- // replace the wildcard in the template with the number string
- strName = pszNameFirst;
- }
- else
- {
- // replace the wildcard in the template with the number string
- strNumber.Empty();
- strNumber.AppendULONG(nCurrentNum);
- strName = pszTemplate;
- strName.FindAndReplace(pszWildcard, strNumber); // replace first wildcard with number string
- }
-
-
- // test if a file or directory exists with that name
- testFileSpec = locationSpec.SpecifyChildFile(strName);
- testDirSpec = locationSpec.SpecifyChildDirectory(strName);
- if (CHXFileSpecUtils::FileExists(testFileSpec)
- || CHXFileSpecUtils::DirectoryExists(testDirSpec))
- {
- // an item already has that name, so increment & wrap the number
- nCurrentNum++;
- nCurrentNum %= kNumWrapValue;
-
- // don't use 0 again, and skip 1 since "MyFile2.txt" logically follows "MyFile.txt"
- if (nCurrentNum == 0 || nCurrentNum == 1)
- {
- nCurrentNum = 2;
- }
-
- // a quick sanity check
- if (nCurrentNum == nStartNum)
- {
- check(!"GetUniqueFileSpecInternal number wrapped");
- break;
- }
- }
- else
- {
- // the name is unique
- resultFileSpec = testFileSpec;
- break;
- }
-
- } // while
- return resultFileSpec;
- }
- //******************************************************************************
- CHXDirSpecifier CHXFileSpecUtils::GetSystemTempDirectory()
- {
- return CHXDirSpecifier(getenv("TMPDIR") ? getenv("TMPDIR") : "/tmp");
- }
- BOOL CHXFileSpecUtils::MakeNameLegal(char *pszName)
- {
- const char *badChars = "\/:*?"<>| ][()'";
- const char replacementChar = '_';
- const long maxNameLength = 255;
- char *pCurrChar = pszName;
-
- BOOL bChanged;
-
- require_nonnull_return(pszName, FALSE);
-
- bChanged = FALSE;
-
- // replace any illegal characters
- while (*pCurrChar)
- {
- if (strchr(badChars, *pCurrChar))
- {
- *pCurrChar = replacementChar;
- bChanged = TRUE;
- }
- pCurrChar = HXGetNextChar(pCurrChar);
-
- // be sure the name isn't too long
- if (pCurrChar - pszName >= maxNameLength)
- {
- if (pCurrChar - pszName >= maxNameLength + 1)
- pCurrChar = HXGetPrevChar(pszName, pCurrChar);
- *pCurrChar = 0;
- bChanged = TRUE;
- }
- }
-
- return bChanged;
- }
- //******************************************************************************
- CHXDirSpecifier
- CHXFileSpecUtils::GetAppDataDir(const char* szAppName)
- {
- return CHXDirSpecifier("/huh");
- }