X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/fd938b117780571129a03155ea0dc01fc73b7f23..badea317077a1bddca31b76cbd855f0cd3ed4fb5:/src/common/file.cpp diff --git a/src/common/file.cpp b/src/common/file.cpp index d8f53811f0..5f4ec23ee3 100644 --- a/src/common/file.cpp +++ b/src/common/file.cpp @@ -14,10 +14,6 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ - #pragma implementation "file.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -29,7 +25,6 @@ // standard #if defined(__WXMSW__) && !defined(__GNUWIN32__) && !defined(__WXMICROWIN__) && !defined(__WXWINCE__) - #include #ifndef __SALFORDC__ #define WIN32_LEAN_AND_MEAN @@ -55,7 +50,9 @@ #endif #elif defined(__WXMSW__) && defined(__WXWINCE__) - // TODO: what to include? + #include "wx/msw/missing.h" +#elif (defined(__OS2__)) + #include #elif (defined(__UNIX__) || defined(__GNUWIN32__)) #include #include @@ -73,8 +70,6 @@ #else #error "Please specify the header with file functions declarations." #endif -#elif (defined(__WXPM__)) - #include #elif (defined(__WXSTUBS__)) // Have to ifdef this for different environments #include @@ -86,27 +81,13 @@ #endif char* mktemp( char * path ) { return path ;} #include - #include + #include #else #error "Please specify the header with file functions declarations." #endif //Win/UNIX #include // SEEK_xxx constants -#ifndef __WXWINCE__ -#include // O_RDONLY &c -#endif - -#ifdef __WXWINCE__ -// Nothing -#elif !defined(__MWERKS__) - #include // needed for stat - #include // stat -#elif defined(__MWERKS__) && ( defined(__WXMSW__) || defined(__MACH__) ) - #include // needed for stat - #include // stat -#endif - // Windows compilers don't have these constants #ifndef W_OK enum @@ -118,20 +99,10 @@ }; #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 -#if defined(__UNIX__) && !defined(O_BINARY) - #define O_BINARY (0) -#endif //__UNIX__ - #ifdef __SALFORDC__ #include #endif -#ifndef MAX_PATH - #define MAX_PATH 512 -#endif - // some broken compilers don't have 3rd argument in open() and creat() #ifdef __SALFORDC__ #define ACCESS(access) @@ -140,7 +111,7 @@ #define ACCESS(access) , (access) #endif // Salford C -// wxWindows +// wxWidgets #ifndef WX_PRECOMP #include "wx/string.h" #include "wx/intl.h" @@ -151,6 +122,12 @@ #include "wx/file.h" #include "wx/filefn.h" +// 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 +#if defined(__UNIX__) && !defined(O_BINARY) + #define O_BINARY (0) +#endif //__UNIX__ + #ifdef __WXMSW__ #include "wx/msw/mslu.h" #endif @@ -159,6 +136,10 @@ #include "wx/msw/private.h" #endif +#ifndef MAX_PATH + #define MAX_PATH 512 +#endif + // ============================================================================ // implementation of wxFile // ============================================================================ @@ -195,12 +176,7 @@ bool wxFile::Access(const wxChar *name, OpenMode mode) break; } -#ifdef __WXWINCE__ - // FIXME: use CreateFile with 0 access to query the file - return TRUE; -#else return wxAccess(name, how) == 0; -#endif } // ---------------------------------------------------------------------------- @@ -211,7 +187,7 @@ bool wxFile::Access(const wxChar *name, OpenMode mode) wxFile::wxFile(const wxChar *szFileName, OpenMode mode) { m_fd = fd_invalid; - m_error = FALSE; + m_error = false; Open(szFileName, mode); } @@ -223,93 +199,27 @@ bool wxFile::Create(const wxChar *szFileName, bool bOverwrite, int accessMode) // otherwise we only create the new file and fail if it already exists #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 = open( szFileName , O_CREAT | (bOverwrite ? O_TRUNC : O_EXCL), access); int fd = creat( szFileName , accessMode); -#else -#ifdef __WXWINCE__ - HANDLE fileHandle = ::CreateFile(szFileName, GENERIC_WRITE, 0, NULL, - bOverwrite ? CREATE_ALWAYS : CREATE_NEW, FILE_ATTRIBUTE_NORMAL, - 0); - int fd = 0; - if (fileHandle == INVALID_HANDLE_VALUE) - fd = (int) fileHandle; - else - fd = -1; #else int fd = wxOpen( szFileName, O_BINARY | O_WRONLY | O_CREAT | (bOverwrite ? O_TRUNC : O_EXCL) ACCESS(accessMode) ); -#endif #endif if ( fd == -1 ) { wxLogSysError(_("can't create file '%s'"), szFileName); - return FALSE; - } - else - { - Attach(fd); - return TRUE; + return false; } + + Attach(fd); + return true; } // open the file bool wxFile::Open(const wxChar *szFileName, OpenMode mode, int accessMode) { -#ifdef __WXWINCE__ - DWORD access = 0; - DWORD shareMode = 0; - DWORD disposition = 0; - - int flags = O_BINARY; - - switch ( mode ) - { - case read: - access = GENERIC_READ; - shareMode = FILE_SHARE_READ|FILE_SHARE_WRITE; - disposition = OPEN_EXISTING; - break; - - case write_append: - if ( wxFile::Exists(szFileName) ) - { - access = GENERIC_READ|GENERIC_WRITE; - shareMode = FILE_SHARE_READ; - disposition = 0; - break; - } - //else: fall through as write_append is the same as write if the - // file doesn't exist - - case write: - access = GENERIC_WRITE; - shareMode = 0; - disposition = TRUNCATE_EXISTING; - break; - - case write_excl: - access = GENERIC_WRITE; - shareMode = 0; - disposition = TRUNCATE_EXISTING; - break; - - case read_write: - access = GENERIC_READ|GENERIC_WRITE; - shareMode = 0; - disposition = 0; - break; - } - - int fd = 0; - HANDLE fileHandle = ::CreateFile(szFileName, access, shareMode, NULL, - disposition, FILE_ATTRIBUTE_NORMAL, 0); - if (fileHandle == INVALID_HANDLE_VALUE) - fd = -1; - else - fd = (int) fileHandle; -#else int flags = O_BINARY; switch ( mode ) @@ -340,38 +250,40 @@ bool wxFile::Open(const wxChar *szFileName, OpenMode mode, int accessMode) break; } +#ifdef __WINDOWS__ + // only read/write bits for "all" are supported by this function under + // Windows, and VC++ 8 returns EINVAL if any other bits are used in + // accessMode, so clear them as they have at best no effect anyhow + accessMode &= wxS_IRUSR | wxS_IWUSR; +#endif // __WINDOWS__ + int fd = wxOpen( szFileName, flags ACCESS(accessMode)); -#endif + if ( fd == -1 ) { wxLogSysError(_("can't open file '%s'"), szFileName); - return FALSE; - } - else { - Attach(fd); - return TRUE; + return false; } + + Attach(fd); + return true; } // close bool wxFile::Close() { if ( IsOpened() ) { -#ifdef __WXWINCE__ - if (!CloseHandle((HANDLE) m_fd)) -#else - if ( close(m_fd) == -1 ) -#endif + if (wxClose(m_fd) == -1) { wxLogSysError(_("can't close file descriptor %d"), m_fd); m_fd = fd_invalid; - return FALSE; + return false; } else m_fd = fd_invalid; } - return TRUE; + return true; } // ---------------------------------------------------------------------------- @@ -379,28 +291,19 @@ bool wxFile::Close() // ---------------------------------------------------------------------------- // read -off_t wxFile::Read(void *pBuf, off_t nCount) +ssize_t wxFile::Read(void *pBuf, size_t nCount) { wxCHECK( (pBuf != NULL) && IsOpened(), 0 ); -#ifdef __WXWINCE__ - DWORD bytesRead = 0; - int iRc = 0; - if (ReadFile((HANDLE) m_fd, pBuf, (DWORD) nCount, & bytesRead, NULL)) - iRc = bytesRead; - else - iRc = -1; -#elif defined(__MWERKS__) - int iRc = ::read(m_fd, (char*) pBuf, nCount); -#else - int iRc = ::read(m_fd, pBuf, nCount); -#endif - if ( iRc == -1 ) { + ssize_t iRc = wxRead(m_fd, pBuf, nCount); + + if ( iRc == -1 ) + { wxLogSysError(_("can't read from file descriptor %d"), m_fd); return wxInvalidOffset; } - else - return (size_t)iRc; + + return iRc; } // write @@ -408,49 +311,35 @@ size_t wxFile::Write(const void *pBuf, size_t nCount) { wxCHECK( (pBuf != NULL) && IsOpened(), 0 ); -#ifdef __WXWINCE__ - DWORD bytesRead = 0; - int iRc = 0; - if (WriteFile((HANDLE) m_fd, pBuf, (DWORD) nCount, & bytesRead, NULL)) - iRc = bytesRead; - else - iRc = -1; -#elif defined(__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 - if ( iRc == -1 ) { + ssize_t iRc = wxWrite(m_fd, pBuf, nCount); + + if ( iRc == -1 ) + { wxLogSysError(_("can't write to file descriptor %d"), m_fd); - m_error = TRUE; - return 0; + m_error = true; + iRc = 0; } - else - return iRc; + + return iRc; } // flush bool wxFile::Flush() { - if ( IsOpened() ) { -#ifdef __WXWINCE__ - // Do nothing -#elif defined(__VISUALC__) || wxHAVE_FSYNC +#ifdef HAVE_FSYNC + // fsync() only works on disk files and returns errors for pipes, don't + // call it then + if ( IsOpened() && GetKind() == wxFILE_KIND_DISK ) + { if ( wxFsync(m_fd) == -1 ) { wxLogSysError(_("can't flush file descriptor %d"), m_fd); - return FALSE; + return false; } -#else // no fsync - // just do nothing -#endif // fsync } +#endif // HAVE_FSYNC - return TRUE; + return true; } // ---------------------------------------------------------------------------- @@ -458,38 +347,13 @@ bool wxFile::Flush() // ---------------------------------------------------------------------------- // seek -off_t wxFile::Seek(off_t ofs, wxSeekMode mode) +wxFileOffset wxFile::Seek(wxFileOffset ofs, wxSeekMode mode) { - wxASSERT( IsOpened() ); - -#ifdef __WXWINCE__ - int origin; - switch ( mode ) { - default: - wxFAIL_MSG(_("unknown seek origin")); - - case wxFromStart: - origin = FILE_BEGIN; - break; - - case wxFromCurrent: - origin = FILE_CURRENT; - break; - - case wxFromEnd: - origin = FILE_END; - break; - } + wxASSERT_MSG( IsOpened(), _T("can't seek on closed file") ); + wxCHECK_MSG( ofs != wxInvalidOffset || mode != wxFromStart, + wxInvalidOffset, + _T("invalid absolute file offset") ); - DWORD res = SetFilePointer((HANDLE) m_fd, ofs, 0, origin) ; - if (res == 0xFFFFFFFF && GetLastError() != NO_ERROR) - { - wxLogSysError(_("can't seek on file descriptor %d"), m_fd); - return wxInvalidOffset; - } - else - return (off_t)res; -#else int origin; switch ( mode ) { default: @@ -508,81 +372,55 @@ off_t wxFile::Seek(off_t ofs, wxSeekMode mode) break; } - int iRc = lseek(m_fd, ofs, origin); - if ( iRc == -1 ) { + wxFileOffset iRc = wxSeek(m_fd, ofs, origin); + if ( iRc == wxInvalidOffset ) + { wxLogSysError(_("can't seek on file descriptor %d"), m_fd); - return wxInvalidOffset; } - else - return (off_t)iRc; -#endif + + return iRc; } -// get current off_t -off_t wxFile::Tell() const +// get current file offset +wxFileOffset wxFile::Tell() const { wxASSERT( IsOpened() ); -#ifdef __WXWINCE__ - DWORD res = SetFilePointer((HANDLE) m_fd, 0, 0, FILE_CURRENT) ; - if (res == 0xFFFFFFFF && GetLastError() != NO_ERROR) + wxFileOffset iRc = wxTell(m_fd); + if ( iRc == wxInvalidOffset ) { wxLogSysError(_("can't get seek position on file descriptor %d"), m_fd); - return wxInvalidOffset; - } - else - return (off_t)res; -#else - int iRc = wxTell(m_fd); - if ( iRc == -1 ) { - wxLogSysError(_("can't get seek position on file descriptor %d"), m_fd); - return wxInvalidOffset; } - else - return (off_t)iRc; -#endif + + return iRc; } // get current file length -off_t wxFile::Length() const +wxFileOffset wxFile::Length() const { wxASSERT( IsOpened() ); -#ifdef __WXWINCE__ - DWORD off0 = SetFilePointer((HANDLE) m_fd, 0, 0, FILE_CURRENT); - DWORD off1 = SetFilePointer((HANDLE) m_fd, 0, 0, FILE_END); - off_t len = off1; - - // Restore position - SetFilePointer((HANDLE) m_fd, off0, 0, FILE_BEGIN); - return len; -#else -#ifdef __VISUALC__ - int iRc = _filelength(m_fd); -#else // !VC++ - int iRc = wxTell(m_fd); - if ( iRc != -1 ) { - // @ have to use const_cast :-( - int iLen = ((wxFile *)this)->SeekEnd(); - if ( iLen != -1 ) { + wxFileOffset iRc = Tell(); + if ( iRc != wxInvalidOffset ) { + // have to use const_cast :-( + wxFileOffset iLen = ((wxFile *)this)->SeekEnd(); + if ( iLen != wxInvalidOffset ) { // restore old position - if ( ((wxFile *)this)->Seek(iRc) == -1 ) { + if ( ((wxFile *)this)->Seek(iRc) == wxInvalidOffset ) { // error - iLen = -1; + iLen = wxInvalidOffset; } } iRc = iLen; } -#endif // VC++ - if ( iRc == -1 ) { + if ( iRc == wxInvalidOffset ) + { wxLogSysError(_("can't find length of file on file descriptor %d"), m_fd); - return wxInvalidOffset; } - else - return (off_t)iRc; -#endif + + return iRc; } // is end of file reached? @@ -590,48 +428,30 @@ bool wxFile::Eof() const { wxASSERT( IsOpened() ); -#ifdef __WXWINCE__ - DWORD off0 = SetFilePointer((HANDLE) m_fd, 0, 0, FILE_CURRENT); - DWORD off1 = SetFilePointer((HANDLE) m_fd, 0, 0, FILE_END); - if (off0 == off1) - return TRUE; - else - { - SetFilePointer((HANDLE) m_fd, off0, 0, FILE_BEGIN); - return FALSE; - } -#else - int iRc; + wxFileOffset iRc; #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(), + wxFileOffset ofsCur = Tell(), ofsMax = Length(); if ( ofsCur == wxInvalidOffset || ofsMax == wxInvalidOffset ) - iRc = -1; + iRc = wxInvalidOffset; else iRc = ofsCur == ofsMax; #else // Windows and "native" compiler - iRc = eof(m_fd); + iRc = wxEof(m_fd); #endif // Windows/Unix - switch ( iRc ) { - case 1: - break; - - case 0: - return FALSE; - - case -1: - wxLogSysError(_("can't determine if the end of file is reached on descriptor %d"), m_fd); - break; - - default: - wxFAIL_MSG(_("invalid eof() return value.")); - } + if ( iRc == 1) + {} + else if ( iRc == 0 ) + return false; + else if ( iRc == wxInvalidOffset ) + wxLogSysError(_("can't determine if the end of file is reached on descriptor %d"), m_fd); + else + wxFAIL_MSG(_("invalid eof() return value.")); - return TRUE; -#endif + return true; } // ============================================================================ @@ -669,13 +489,13 @@ bool wxTempFile::Open(const wxString& strName) if ( m_strTemp.empty() ) { // CreateTempFileName() failed - return FALSE; + return false; } #ifdef __UNIX__ // the temp file should have the same permissions as the original one mode_t mode; - + wxStructStat st; if ( stat( (const char*) m_strName.fn_str(), &st) == 0 ) { @@ -692,11 +512,13 @@ bool wxTempFile::Open(const wxString& strName) if ( chmod( (const char*) m_strTemp.fn_str(), mode) == -1 ) { +#ifndef __OS2__ wxLogSysError(_("Failed to set temporary file permissions")); +#endif } #endif // Unix - return TRUE; + return true; } // ---------------------------------------------------------------------------- @@ -715,15 +537,15 @@ bool wxTempFile::Commit() if ( wxFile::Exists(m_strName) && wxRemove(m_strName) != 0 ) { wxLogSysError(_("can't remove file '%s'"), m_strName.c_str()); - return FALSE; + return false; } if ( !wxRenameFile(m_strTemp, m_strName) ) { wxLogSysError(_("can't commit changes to file '%s'"), m_strName.c_str()); - return FALSE; + return false; } - return TRUE; + return true; } void wxTempFile::Discard()