X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/93e0db9a80d880a15d3a8eb25c3db01f63392038..55809d1394516044a90fa34b12070d0f3e9f1439:/src/common/file.cpp?ds=sidebyside diff --git a/src/common/file.cpp b/src/common/file.cpp index d4f8309c9e..605519d4f8 100644 --- a/src/common/file.cpp +++ b/src/common/file.cpp @@ -14,10 +14,6 @@ // headers // ---------------------------------------------------------------------------- -#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) - #pragma implementation "file.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -103,20 +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) @@ -136,6 +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 @@ -144,6 +136,10 @@ #include "wx/msw/private.h" #endif +#ifndef MAX_PATH + #define MAX_PATH 512 +#endif + // ============================================================================ // implementation of wxFile // ============================================================================ @@ -188,12 +184,12 @@ bool wxFile::Access(const wxChar *name, OpenMode mode) // ---------------------------------------------------------------------------- // ctors -wxFile::wxFile(const wxChar *szFileName, OpenMode mode) +wxFile::wxFile(const wxString& fileName, OpenMode mode) { m_fd = fd_invalid; m_error = false; - Open(szFileName, mode); + Open(fileName, mode); } // create the file, fail if it already exists and bOverwrite @@ -216,11 +212,9 @@ bool wxFile::Create(const wxChar *szFileName, bool bOverwrite, int accessMode) wxLogSysError(_("can't create file '%s'"), szFileName); return false; } - else - { - Attach(fd); - return true; - } + + Attach(fd); + return true; } // open the file @@ -270,10 +264,9 @@ bool wxFile::Open(const wxChar *szFileName, OpenMode mode, int accessMode) wxLogSysError(_("can't open file '%s'"), szFileName); return false; } - else { - Attach(fd); - return true; - } + + Attach(fd); + return true; } // close @@ -298,50 +291,63 @@ bool wxFile::Close() // ---------------------------------------------------------------------------- // read -wxFileSize_t wxFile::Read(void *pBuf, wxFileSize_t nCount) +ssize_t wxFile::Read(void *pBuf, size_t nCount) { wxCHECK( (pBuf != NULL) && IsOpened(), 0 ); - wxFileOffset iRc = wxRead(m_fd, pBuf, nCount); + ssize_t iRc = wxRead(m_fd, pBuf, nCount); - if ( iRc == -1 ) { + if ( iRc == -1 ) + { wxLogSysError(_("can't read from file descriptor %d"), m_fd); return wxInvalidOffset; } - else - return (wxFileSize_t)iRc; + + return iRc; } // write -wxFileSize_t wxFile::Write(const void *pBuf, wxFileSize_t nCount) +size_t wxFile::Write(const void *pBuf, size_t nCount) { wxCHECK( (pBuf != NULL) && IsOpened(), 0 ); - int iRc = wxWrite(m_fd, pBuf, nCount); + ssize_t iRc = wxWrite(m_fd, pBuf, nCount); - if ( iRc == -1 ) { + if ( iRc == -1 ) + { wxLogSysError(_("can't write to file descriptor %d"), m_fd); m_error = true; - return 0; + iRc = 0; } - else - return (wxFileSize_t)iRc; + + return iRc; +} + +bool wxFile::Write(const wxString& s, const wxMBConv& conv) +{ + const wxWX2MBbuf buf = s.mb_str(conv); + if ( !buf ) + return false; + + const size_t size = strlen(buf); // FIXME: use buf.length() when available + return Write(buf, size) == size; } // flush bool wxFile::Flush() { - if ( IsOpened() ) { -#if 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; } -#else // no fsync - // just do nothing -#endif // fsync } +#endif // HAVE_FSYNC return true; } @@ -353,7 +359,10 @@ bool wxFile::Flush() // seek wxFileOffset wxFile::Seek(wxFileOffset ofs, wxSeekMode mode) { - wxASSERT( IsOpened() ); + wxASSERT_MSG( IsOpened(), _T("can't seek on closed file") ); + wxCHECK_MSG( ofs != wxInvalidOffset || mode != wxFromStart, + wxInvalidOffset, + _T("invalid absolute file offset") ); int origin; switch ( mode ) { @@ -373,32 +382,27 @@ wxFileOffset wxFile::Seek(wxFileOffset ofs, wxSeekMode mode) break; } - if (ofs == wxInvalidOffset) - { - wxLogSysError(_("can't seek on file descriptor %d, large files support is not enabled."), m_fd); - return wxInvalidOffset; - } wxFileOffset iRc = wxSeek(m_fd, ofs, origin); - if ( iRc == -1 ) { + if ( iRc == wxInvalidOffset ) + { wxLogSysError(_("can't seek on file descriptor %d"), m_fd); - return wxInvalidOffset; } - else - return iRc; + + return iRc; } -// get current wxFileOffset +// get current file offset wxFileOffset wxFile::Tell() const { wxASSERT( IsOpened() ); wxFileOffset iRc = wxTell(m_fd); - if ( iRc == -1 ) { + if ( iRc == wxInvalidOffset ) + { wxLogSysError(_("can't get seek position on file descriptor %d"), m_fd); - return wxInvalidOffset; } - else - return iRc; + + return iRc; } // get current file length @@ -407,26 +411,26 @@ wxFileOffset wxFile::Length() const wxASSERT( IsOpened() ); wxFileOffset iRc = Tell(); - if ( iRc != -1 ) { - // @ have to use const_cast :-( + if ( iRc != wxInvalidOffset ) { + // have to use const_cast :-( wxFileOffset iLen = ((wxFile *)this)->SeekEnd(); - if ( iLen != -1 ) { + 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; } - if ( iRc == -1 ) { + if ( iRc == wxInvalidOffset ) + { wxLogSysError(_("can't find length of file on file descriptor %d"), m_fd); - return wxInvalidOffset; } - else - return iRc; + + return iRc; } // is end of file reached? @@ -434,34 +438,28 @@ bool wxFile::Eof() const { wxASSERT( IsOpened() ); - 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 wxFileOffset ofsCur = Tell(), ofsMax = Length(); if ( ofsCur == wxInvalidOffset || ofsMax == wxInvalidOffset ) - iRc = -1; + iRc = wxInvalidOffset; else iRc = ofsCur == ofsMax; #else // Windows and "native" compiler 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; }