X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/312cd9e93d7c0bf201e52297741e8e12a7298fc9..76a5e5d21ee1a6230d777ce0209b2df4c6075f0f:/src/common/file.cpp diff --git a/src/common/file.cpp b/src/common/file.cpp index ef24f40f83..bbce6d8de1 100644 --- a/src/common/file.cpp +++ b/src/common/file.cpp @@ -28,7 +28,7 @@ #if wxUSE_FILE // standard -#if defined(__WXMSW__) && !defined(__GNUWIN32__) && !defined(__WXWINE__) +#if defined(__WXMSW__) && !defined(__GNUWIN32__) && !defined(__WXWINE__) && !defined(__WXMICROWIN__) #include #ifndef __SALFORDC__ @@ -54,27 +54,39 @@ #define NOMCX #endif - #include // for GetTempFileName #elif (defined(__UNIX__) || defined(__GNUWIN32__)) #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 - #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 + #include #else #error "Please specify the header with file functions declarations." #endif //Win/UNIX @@ -85,38 +97,11 @@ #ifndef __MWERKS__ #include // needed for stat #include // stat +#elif ( defined(__MWERKS__) && defined(__WXMSW__) ) + #include // needed for stat + #include // stat #endif -// Microsoft compiler loves underscores, feed them to it -#ifdef __VISUALC__ - // functions - #define open _open - #define close _close - #define read _read - #define write _write - #define lseek _lseek - #define fsync _commit - #define access _access - #define eof _eof - - // types - #define stat _stat - - // constants - - #define O_RDONLY _O_RDONLY - #define O_WRONLY _O_WRONLY - #define O_RDWR _O_RDWR - #define O_EXCL _O_EXCL - #define O_CREAT _O_CREAT - #define O_BINARY _O_BINARY - - #define S_IFDIR _S_IFDIR - #define S_IFREG _S_IFREG -#else - #define tell(fd) lseek(fd, 0, SEEK_CUR) -#endif // VC++ - #if defined(__BORLANDC__) || defined(_MSC_VER) #define W_OK 2 #define R_OK 4 @@ -132,12 +117,6 @@ #include #endif -// wxWindows -#include "wx/string.h" -#include "wx/intl.h" -#include "wx/file.h" -#include "wx/log.h" - #ifndef MAX_PATH #define MAX_PATH 512 #endif @@ -150,6 +129,16 @@ #define ACCESS(access) , (access) #endif // Salford C +// wxWindows +#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" + // ============================================================================ // implementation of wxFile // ============================================================================ @@ -159,26 +148,19 @@ // ---------------------------------------------------------------------------- bool wxFile::Exists(const wxChar *name) { - struct stat st; + 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 !access(fname, 0) && - !stat(wxMBSTRINGCAST fname, &st) && + 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 !access(name, 0) && - !stat((wxChar*) name, &st) && + return !wxAccess(name, 0) && + !wxStat(name, &st) && (st.st_mode & S_IFREG); #endif -#endif } bool wxFile::Access(const wxChar *name, OpenMode mode) @@ -198,7 +180,7 @@ bool wxFile::Access(const wxChar *name, OpenMode mode) wxFAIL_MSG(wxT("bad wxFile::Access mode parameter.")); } - return access(wxFNCONV(name), how) == 0; + return wxAccess(wxFNCONV(name), how) == 0; } // ---------------------------------------------------------------------------- @@ -219,13 +201,15 @@ 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__) + // 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 = open(wxFNCONV(szFileName), - O_BINARY | O_WRONLY | O_CREAT | - (bOverwrite ? O_TRUNC : O_EXCL) - ACCESS(accessMode)); + int fd = wxOpen(wxFNCONV(szFileName), + O_BINARY | O_WRONLY | O_CREAT | + (bOverwrite ? O_TRUNC : O_EXCL) + ACCESS(accessMode)); #endif if ( fd == -1 ) { wxLogSysError(_("can't create file '%s'"), szFileName); @@ -247,12 +231,21 @@ bool wxFile::Open(const wxChar *szFileName, OpenMode mode, int accessMode) flags |= O_RDONLY; break; + case write_append: + if ( wxFile::Exists(szFileName) ) + { + flags |= O_WRONLY | O_APPEND; + break; + } + //else: fall through as write_append is the same as write if the + // file doesn't exist + case write: flags |= O_WRONLY | O_CREAT | O_TRUNC; break; - case write_append: - flags |= O_WRONLY | O_APPEND; + case write_excl: + flags |= O_WRONLY | O_CREAT | O_EXCL; break; case read_write: @@ -260,11 +253,7 @@ bool wxFile::Open(const wxChar *szFileName, OpenMode mode, int accessMode) break; } -#ifdef __WXMAC__ - int fd = open(wxUnix2MacFilename( szFileName ), flags, access); -#else - int fd = open(wxFNCONV(szFileName), flags ACCESS(accessMode)); -#endif + int fd = wxOpen(wxFNCONV(szFileName), flags ACCESS(accessMode)); if ( fd == -1 ) { wxLogSysError(_("can't open file '%s'"), szFileName); return FALSE; @@ -319,7 +308,11 @@ 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 @@ -337,7 +330,7 @@ bool wxFile::Flush() { if ( IsOpened() ) { #if defined(__VISUALC__) || wxHAVE_FSYNC - if ( fsync(m_fd) == -1 ) + if ( wxFsync(m_fd) == -1 ) { wxLogSysError(_("can't flush file descriptor %d"), m_fd); return FALSE; @@ -391,7 +384,7 @@ off_t wxFile::Tell() const { wxASSERT( IsOpened() ); - int iRc = tell(m_fd); + int iRc = wxTell(m_fd); if ( iRc == -1 ) { wxLogSysError(_("can't get seek position on file descriptor %d"), m_fd); return wxInvalidOffset; @@ -408,7 +401,7 @@ off_t wxFile::Length() const #ifdef __VISUALC__ int iRc = _filelength(m_fd); #else // !VC++ - int iRc = tell(m_fd); + int iRc = wxTell(m_fd); if ( iRc != -1 ) { // @ have to use const_cast :-( int iLen = ((wxFile *)this)->SeekEnd(); @@ -439,7 +432,7 @@ 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(); @@ -459,8 +452,7 @@ bool wxFile::Eof() const return FALSE; case -1: - wxLogSysError(_("can't determine if the end of file is reached on \ - descriptor %d"), m_fd); + wxLogSysError(_("can't determine if the end of file is reached on descriptor %d"), m_fd); break; default: @@ -477,6 +469,7 @@ bool wxFile::Eof() const // ---------------------------------------------------------------------------- // construction // ---------------------------------------------------------------------------- + wxTempFile::wxTempFile(const wxString& strName) { Open(strName); @@ -484,78 +477,54 @@ 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; - mkdir(m_strTemp.GetWriteBuf(MAX_PATH)); -#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); + } + + m_strName = fn.GetFullPath(); + + m_strTemp = wxFileName::CreateTempFileName(m_strName, &m_file); + + if ( m_strTemp.empty() ) + { + // CreateTempFileName() failed + return FALSE; + } - 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; + // the temp file should have the same permissions as the original one + mode_t mode; - struct stat st; - if ( stat(strName.fn_str(), &st) == 0 ) + wxStructStat st; + if ( stat(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(m_strTemp.mb_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; } // ---------------------------------------------------------------------------- @@ -572,27 +541,15 @@ bool wxTempFile::Commit() { m_file.Close(); -#ifndef __WXMAC__ - if ( wxFile::Exists(m_strName) && remove(m_strName.fn_str()) != 0 ) { + if ( wxFile::Exists(m_strName) && wxRemove(m_strName) != 0 ) { wxLogSysError(_("can't remove file '%s'"), m_strName.c_str()); return FALSE; } - if ( rename(m_strTemp.fn_str(), m_strName.fn_str()) != 0 ) { + if ( wxRename(m_strTemp, m_strName) != 0 ) { 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; } @@ -600,14 +557,9 @@ bool wxTempFile::Commit() void wxTempFile::Discard() { m_file.Close(); -#ifndef __WXMAC__ - if ( remove(m_strTemp.fn_str()) != 0 ) - wxLogSysError(_("can't remove temporary file '%s'"), m_strTemp.c_str()); -#else - if ( remove( wxUnix2MacFilename(m_strTemp.fn_str())) != 0 ) + if ( wxRemove(m_strTemp) != 0 ) wxLogSysError(_("can't remove temporary file '%s'"), m_strTemp.c_str()); -#endif } -#endif +#endif // wxUSE_FILE