X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/fcea31d51bf897c782618063279c6876a7807e83..0f1c3d30d4a699817340ce56e752b61b78cccb1c:/src/common/file.cpp?ds=inline diff --git a/src/common/file.cpp b/src/common/file.cpp index 2405ed9822..2b837569a2 100644 --- a/src/common/file.cpp +++ b/src/common/file.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: file.cpp +// Name: src/common/file.cpp // Purpose: wxFile - encapsulates low-level "file descriptor" // wxTempFile // Author: Vadim Zeitlin @@ -26,28 +26,26 @@ // standard #if defined(__WXMSW__) && !defined(__GNUWIN32__) && !defined(__WXMICROWIN__) && !defined(__WXWINCE__) -#ifndef __SALFORDC__ - #define WIN32_LEAN_AND_MEAN - #define NOSERVICE - #define NOIME - #define NOATOM - #define NOGDI - #define NOGDICAPMASKS - #define NOMETAFILE - #define NOMINMAX - #define NOMSG - #define NOOPENFILE - #define NORASTEROPS - #define NOSCROLL - #define NOSOUND - #define NOSYSMETRICS - #define NOTEXTMETRIC - #define NOWH - #define NOCOMM - #define NOKANJI - #define NOCRYPT - #define NOMCX -#endif +#define WIN32_LEAN_AND_MEAN +#define NOSERVICE +#define NOIME +#define NOATOM +#define NOGDI +#define NOGDICAPMASKS +#define NOMETAFILE +#define NOMINMAX +#define NOMSG +#define NOOPENFILE +#define NORASTEROPS +#define NOSCROLL +#define NOSOUND +#define NOSYSMETRICS +#define NOTEXTMETRIC +#define NOWH +#define NOCOMM +#define NOKANJI +#define NOCRYPT +#define NOMCX #elif defined(__WXMSW__) && defined(__WXWINCE__) #include "wx/msw/missing.h" @@ -82,6 +80,8 @@ char* mktemp( char * path ) { return path ;} #include #include +#elif defined(__WXPALMOS__) + #include "wx/palmos/missing.h" #else #error "Please specify the header with file functions declarations." #endif //Win/UNIX @@ -99,23 +99,12 @@ }; #endif // W_OK -#ifdef __SALFORDC__ - #include -#endif - -// some broken compilers don't have 3rd argument in open() and creat() -#ifdef __SALFORDC__ - #define ACCESS(access) - #define stat _stat -#else // normal compiler - #define ACCESS(access) , (access) -#endif // Salford C - // wxWidgets #ifndef WX_PRECOMP #include "wx/string.h" #include "wx/intl.h" #include "wx/log.h" + #include "wx/crt.h" #endif // !WX_PRECOMP #include "wx/filename.h" @@ -197,16 +186,10 @@ bool wxFile::Create(const wxString& fileName, 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 -#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( fileName , O_CREAT | (bOverwrite ? O_TRUNC : O_EXCL), access); - int fd = creat( fileName , accessMode); -#else int fd = wxOpen( fileName, O_BINARY | O_WRONLY | O_CREAT | - (bOverwrite ? O_TRUNC : O_EXCL) - ACCESS(accessMode) ); -#endif + (bOverwrite ? O_TRUNC : O_EXCL), + accessMode ); if ( fd == -1 ) { wxLogSysError(_("can't create file '%s'"), fileName); @@ -257,7 +240,7 @@ bool wxFile::Open(const wxString& fileName, OpenMode mode, int accessMode) accessMode &= wxS_IRUSR | wxS_IWUSR; #endif // __WINDOWS__ - int fd = wxOpen( fileName, flags ACCESS(accessMode)); + int fd = wxOpen( fileName, flags, accessMode); if ( fd == -1 ) { @@ -329,7 +312,12 @@ bool wxFile::Write(const wxString& s, const wxMBConv& conv) if ( !buf ) return false; - const size_t size = strlen(buf); // FIXME: use buf.length() when available +#if wxUSE_UNICODE + const size_t size = buf.length(); +#else + const size_t size = s.length(); +#endif + return Write(buf, size) == size; } @@ -359,15 +347,15 @@ bool wxFile::Flush() // seek wxFileOffset wxFile::Seek(wxFileOffset ofs, wxSeekMode mode) { - wxASSERT_MSG( IsOpened(), _T("can't seek on closed file") ); + wxASSERT_MSG( IsOpened(), wxT("can't seek on closed file") ); wxCHECK_MSG( ofs != wxInvalidOffset || mode != wxFromStart, wxInvalidOffset, - _T("invalid absolute file offset") ); + wxT("invalid absolute file offset") ); int origin; switch ( mode ) { default: - wxFAIL_MSG(_("unknown seek origin")); + wxFAIL_MSG(wxT("unknown seek origin")); case wxFromStart: origin = SEEK_SET; @@ -410,6 +398,21 @@ wxFileOffset wxFile::Length() const { wxASSERT( IsOpened() ); + // we use a special method for Linux systems where files in sysfs (i.e. + // those under /sys typically) return length of 4096 bytes even when + // they're much smaller -- this is a problem as it results in errors later + // when we try reading 4KB from them +#ifdef __LINUX__ + struct stat st; + if ( fstat(m_fd, &st) == 0 ) + { + // returning 0 for the special files indicates to the caller that they + // are not seekable + return st.st_blocks ? st.st_size : 0; + } + //else: failed to stat, try the normal method +#endif // __LINUX__ + wxFileOffset iRc = Tell(); if ( iRc != wxInvalidOffset ) { // have to use const_cast :-( @@ -440,7 +443,7 @@ bool wxFile::Eof() const wxFileOffset iRc; -#if defined(__DOS__) || defined(__UNIX__) || defined(__GNUWIN32__) || defined( __MWERKS__ ) || defined(__SALFORDC__) +#if defined(__DOS__) || defined(__UNIX__) || defined(__GNUWIN32__) || defined( __MWERKS__ ) // @@ this doesn't work, of course, on unseekable file descriptors wxFileOffset ofsCur = Tell(), ofsMax = Length(); @@ -452,14 +455,17 @@ bool wxFile::Eof() const iRc = wxEof(m_fd); #endif // Windows/Unix - if ( iRc == 1) - {} - else if ( iRc == 0 ) + if ( iRc == 0 ) return false; - else if ( iRc == wxInvalidOffset ) + + 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.")); + } + else if ( iRc != 1 ) + { + wxFAIL_MSG(wxT("invalid eof() return value.")); + } return true; } @@ -562,7 +568,9 @@ void wxTempFile::Discard() { m_file.Close(); if ( wxRemove(m_strTemp) != 0 ) + { wxLogSysError(_("can't remove temporary file '%s'"), m_strTemp.c_str()); + } } #endif // wxUSE_FILE