X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f6bcfd974ef26faf6f91a62cac09827e09463fd1..673e6120795e4e1f3a49157581925a5ee14bf5a9:/src/common/file.cpp diff --git a/src/common/file.cpp b/src/common/file.cpp index cd4f7c7a01..04fd887a93 100644 --- a/src/common/file.cpp +++ b/src/common/file.cpp @@ -7,7 +7,7 @@ // Created: 29/01/98 // RCS-ID: $Id$ // Copyright: (c) 1998 Vadim Zeitlin -// Licence: wxWindows license +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // ---------------------------------------------------------------------------- @@ -28,7 +28,7 @@ #if wxUSE_FILE // standard -#if defined(__WXMSW__) && !defined(__GNUWIN32__) && !defined(__WXWINE__) +#if defined(__WXMSW__) && !defined(__GNUWIN32__) && !defined(__WXMICROWIN__) #include #ifndef __SALFORDC__ @@ -54,26 +54,36 @@ #define NOMCX #endif - #include // for GetTempFileName #elif (defined(__UNIX__) || defined(__GNUWIN32__)) #include + #include #ifdef __GNUWIN32__ #include #endif +#elif defined(__DOS__) + #if defined(__WATCOMC__) + #include + #elif defined(__DJGPP__) + #include + #include + #include + #else + #error "Please specify the header with file functions declarations." + #endif #elif (defined(__WXPM__)) #include - #define W_OK 2 - #define R_OK 4 #elif (defined(__WXSTUBS__)) // Have to ifdef this for different environments #include #elif (defined(__WXMAC__)) +#if __MSL__ < 0x6000 int access( const char *path, int mode ) { return 0 ; } +#else + int _access( const char *path, int mode ) { return 0 ; } +#endif char* mktemp( char * path ) { return path ;} + #include #include - #include - #define W_OK 2 - #define R_OK 4 #else #error "Please specify the header with file functions declarations." #endif //Win/UNIX @@ -84,12 +94,21 @@ #ifndef __MWERKS__ #include // needed for stat #include // stat +#elif defined(__MWERKS__) && ( defined(__WXMSW__) || defined(__MACH__) ) + #include // needed for stat + #include // stat #endif -#if defined(__BORLANDC__) || defined(_MSC_VER) - #define W_OK 2 - #define R_OK 4 -#endif +// Windows compilers don't have these constants +#ifndef W_OK + enum + { + F_OK = 0, // test for existence + X_OK = 1, // execute permission + W_OK = 2, // write + R_OK = 4 // read + }; +#endif // W_OK // there is no distinction between text and binary files under Unix, so define // O_BINARY as 0 if the system headers don't do it already @@ -114,10 +133,19 @@ #endif // Salford C // wxWindows -#include "wx/string.h" -#include "wx/intl.h" +#ifndef WX_PRECOMP + #include "wx/string.h" + #include "wx/intl.h" + #include "wx/log.h" +#endif // !WX_PRECOMP + +#include "wx/filename.h" #include "wx/file.h" -#include "wx/log.h" +#include "wx/filefn.h" + +#ifdef __WXMSW__ + #include "wx/msw/mslu.h" +#endif // ============================================================================ // implementation of wxFile @@ -126,35 +154,22 @@ // ---------------------------------------------------------------------------- // static functions // ---------------------------------------------------------------------------- + bool wxFile::Exists(const wxChar *name) { - wxStructStat st; -#if wxUSE_UNICODE && wxMBFILES - wxCharBuffer fname = wxConvFile.cWC2MB(name); - -#ifdef __WXMAC__ - return !access(wxUnix2MacFilename( name ) , 0) && !stat(wxUnix2MacFilename( name ), &st) && (st.st_mode & S_IFREG); -#else - return !wxAccess(fname, 0) && - !wxStat(wxMBSTRINGCAST fname, &st) && - (st.st_mode & S_IFREG); -#endif -#else -#ifdef __WXMAC__ - return !access(wxUnix2MacFilename( name ) , 0) && !stat(wxUnix2MacFilename( name ), &st) && (st.st_mode & S_IFREG); -#else - return !wxAccess(name, 0) && - !wxStat(name, &st) && - (st.st_mode & S_IFREG); -#endif -#endif + return wxFileExists(name); } bool wxFile::Access(const wxChar *name, OpenMode mode) { - int how = 0; + int how; + + switch ( mode ) + { + default: + wxFAIL_MSG(wxT("bad wxFile::Access mode parameter.")); + // fall through - switch ( mode ) { case read: how = R_OK; break; @@ -163,11 +178,12 @@ bool wxFile::Access(const wxChar *name, OpenMode mode) how = W_OK; break; - default: - wxFAIL_MSG(wxT("bad wxFile::Access mode parameter.")); + case read_write: + how = R_OK | W_OK; + break; } - return wxAccess(wxFNCONV(name), how) == 0; + return wxAccess(name, how) == 0; } // ---------------------------------------------------------------------------- @@ -188,19 +204,23 @@ bool wxFile::Create(const wxChar *szFileName, bool bOverwrite, int accessMode) { // if bOverwrite we create a new file or truncate the existing one, // otherwise we only create the new file and fail if it already exists -#ifdef __WXMAC__ - int fd = open(wxUnix2MacFilename( szFileName ), O_CREAT | (bOverwrite ? O_TRUNC : O_EXCL), access); +#if defined(__WXMAC__) && !defined(__UNIX__) && !wxUSE_UNICODE + // Dominic Mazzoni [dmazzoni+@cs.cmu.edu] reports that open is still broken on the mac, so we replace + // int fd = open(wxUnix2MacFilename( szFileName ), O_CREAT | (bOverwrite ? O_TRUNC : O_EXCL), access); + int fd = creat( szFileName , accessMode); #else - int fd = wxOpen(wxFNCONV(szFileName), - O_BINARY | O_WRONLY | O_CREAT | - (bOverwrite ? O_TRUNC : O_EXCL) - ACCESS(accessMode)); + int fd = wxOpen( szFileName, + O_BINARY | O_WRONLY | O_CREAT | + (bOverwrite ? O_TRUNC : O_EXCL) + ACCESS(accessMode) ); #endif - if ( fd == -1 ) { + if ( fd == -1 ) + { wxLogSysError(_("can't create file '%s'"), szFileName); return FALSE; } - else { + else + { Attach(fd); return TRUE; } @@ -211,7 +231,8 @@ bool wxFile::Open(const wxChar *szFileName, OpenMode mode, int accessMode) { int flags = O_BINARY; - switch ( mode ) { + switch ( mode ) + { case read: flags |= O_RDONLY; break; @@ -229,17 +250,18 @@ bool wxFile::Open(const wxChar *szFileName, OpenMode mode, int accessMode) flags |= O_WRONLY | O_CREAT | O_TRUNC; break; + case write_excl: + flags |= O_WRONLY | O_CREAT | O_EXCL; + break; + case read_write: flags |= O_RDWR; break; } -#ifdef __WXMAC__ - int fd = open(wxUnix2MacFilename( szFileName ), flags, access); -#else - int fd = wxOpen(wxFNCONV(szFileName), flags ACCESS(accessMode)); -#endif - if ( fd == -1 ) { + int fd = wxOpen( szFileName, flags ACCESS(accessMode)); + if ( fd == -1 ) + { wxLogSysError(_("can't open file '%s'"), szFileName); return FALSE; } @@ -293,7 +315,11 @@ size_t wxFile::Write(const void *pBuf, size_t nCount) wxCHECK( (pBuf != NULL) && IsOpened(), 0 ); #ifdef __MWERKS__ +#if __MSL__ >= 0x6000 + int iRc = ::write(m_fd, (void*) pBuf, nCount); +#else int iRc = ::write(m_fd, (const char*) pBuf, nCount); +#endif #else int iRc = ::write(m_fd, pBuf, nCount); #endif @@ -413,7 +439,7 @@ bool wxFile::Eof() const int iRc; -#if defined(__UNIX__) || defined(__GNUWIN32__) || defined( __MWERKS__ ) || defined(__SALFORDC__) +#if defined(__DOS__) || defined(__UNIX__) || defined(__GNUWIN32__) || defined( __MWERKS__ ) || defined(__SALFORDC__) // @@ this doesn't work, of course, on unseekable file descriptors off_t ofsCur = Tell(), ofsMax = Length(); @@ -450,6 +476,7 @@ bool wxFile::Eof() const // ---------------------------------------------------------------------------- // construction // ---------------------------------------------------------------------------- + wxTempFile::wxTempFile(const wxString& strName) { Open(strName); @@ -457,78 +484,54 @@ wxTempFile::wxTempFile(const wxString& strName) bool wxTempFile::Open(const wxString& strName) { - m_strName = strName; - - // we want to create the file in the same directory as strName because - // otherwise rename() in Commit() might not work (if the files are on - // different partitions for example). Unfortunately, the only standard - // (POSIX) temp file creation function tmpnam() can't do it. -#if defined(__UNIX__) || defined(__WXSTUBS__)|| defined( __WXMAC__ ) - static const wxChar *szMktempSuffix = wxT("XXXXXX"); - m_strTemp << strName << szMktempSuffix; - // can use the cast because length doesn't change - mktemp(wxMBSTRINGCAST m_strTemp.mb_str()); -#elif defined(__WXPM__) - // for now just create a file - // future enhancements can be to set some extended attributes for file systems - // OS/2 supports that have them (HPFS, FAT32) and security (HPFS386) - static const wxChar *szMktempSuffix = wxT("XXX"); - m_strTemp << strName << szMktempSuffix; - ::DosCreateDir(m_strTemp.GetWriteBuf(MAX_PATH), NULL); -#else // Windows - wxString strPath; - wxSplitPath(strName, &strPath, NULL, NULL); - if ( strPath.IsEmpty() ) - strPath = wxT('.'); // GetTempFileName will fail if we give it empty string -#ifdef __WIN32__ - if ( !GetTempFileName(strPath, wxT("wx_"),0, m_strTemp.GetWriteBuf(MAX_PATH)) ) -#else - // Not sure why MSVC++ 1.5 header defines first param as BYTE - bug? - if ( !GetTempFileName((BYTE) (DWORD)(const wxChar*) strPath, wxT("wx_"),0, m_strTemp.GetWriteBuf(MAX_PATH)) ) -#endif - wxLogLastError(wxT("GetTempFileName")); - m_strTemp.UngetWriteBuf(); -#endif // Windows/Unix + // we must have an absolute filename because otherwise CreateTempFileName() + // would create the temp file in $TMP (i.e. the system standard location + // for the temp files) which might be on another volume/drive/mount and + // wxRename()ing it later to m_strName from Commit() would then fail + // + // with the absolute filename, the temp file is created in the same + // directory as this one which ensures that wxRename() may work later + wxFileName fn(strName); + if ( !fn.IsAbsolute() ) + { + fn.Normalize(wxPATH_NORM_ABSOLUTE); + } - int access = wxS_DEFAULT; -#ifdef __UNIX__ - // create the file with the same mode as the original one under Unix - mode_t umaskOld = 0; // just to suppress compiler warning - bool changedUmask; + m_strName = fn.GetFullPath(); + + m_strTemp = wxFileName::CreateTempFileName(m_strName, &m_file); + if ( m_strTemp.empty() ) + { + // CreateTempFileName() failed + return FALSE; + } + +#ifdef __UNIX__ + // the temp file should have the same permissions as the original one + mode_t mode; + wxStructStat st; - if ( stat(strName.fn_str(), &st) == 0 ) + if ( stat( (const char*) m_strName.fn_str(), &st) == 0 ) { - // this assumes that only lower bits of st_mode contain the access - // rights, but it's true for at least all Unices which have S_IXXXX() - // macros, so should not be less portable than using (not POSIX) - // S_IFREG &c - access = st.st_mode & 0777; - - // we want to create the file with exactly the same access rights as - // the original one, so disable the user's umask for the moment - umaskOld = umask(0); - changedUmask = TRUE; + mode = st.st_mode; } else { - // file probably didn't exist, just create with default mode _using_ - // user's umask (new files creation should respet umask) - changedUmask = FALSE; + // file probably didn't exist, just give it the default mode _using_ + // user's umask (new files creation should respect umask) + mode_t mask = umask(0777); + mode = 0666 & ~mask; + umask(mask); } -#endif // Unix - bool ok = m_file.Open(m_strTemp, wxFile::write, access); - -#ifdef __UNIX__ - if ( changedUmask ) + if ( chmod( (const char*) m_strTemp.fn_str(), mode) == -1 ) { - // restore umask now that the file is created - (void)umask(umaskOld); + wxLogSysError(_("Failed to set temporary file permissions")); } #endif // Unix - return ok; + return TRUE; } // ---------------------------------------------------------------------------- @@ -545,7 +548,6 @@ bool wxTempFile::Commit() { m_file.Close(); -#ifndef __WXMAC__ if ( wxFile::Exists(m_strName) && wxRemove(m_strName) != 0 ) { wxLogSysError(_("can't remove file '%s'"), m_strName.c_str()); return FALSE; @@ -555,17 +557,6 @@ bool wxTempFile::Commit() wxLogSysError(_("can't commit changes to file '%s'"), m_strName.c_str()); return FALSE; } -#else - if ( wxFile::Exists(m_strName) && remove(wxUnix2MacFilename( m_strName )) != 0 ) { - wxLogSysError(_("can't remove file '%s'"), m_strName.c_str()); - return FALSE; - } - - if ( rename(wxUnix2MacFilename( m_strTemp ), wxUnix2MacFilename( m_strName )) != 0 ) { - wxLogSysError(_("can't commit changes to file '%s'"), m_strName.c_str()); - return FALSE; - } -#endif return TRUE; } @@ -573,14 +564,9 @@ bool wxTempFile::Commit() void wxTempFile::Discard() { m_file.Close(); -#ifndef __WXMAC__ if ( wxRemove(m_strTemp) != 0 ) wxLogSysError(_("can't remove temporary file '%s'"), m_strTemp.c_str()); -#else - if ( remove( wxUnix2MacFilename(m_strTemp.fn_str())) != 0 ) - wxLogSysError(_("can't remove temporary file '%s'"), m_strTemp.c_str()); -#endif } -#endif +#endif // wxUSE_FILE