X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a324a7bccf4bda8f4f2bf09daee8104cae953cee..7086c32ab8de8ebbe1d2e6f6ab125ccbb8b85b13:/src/common/ffile.cpp?ds=inline diff --git a/src/common/ffile.cpp b/src/common/ffile.cpp index 4449ec42a2..a208dacb3e 100644 --- a/src/common/ffile.cpp +++ b/src/common/ffile.cpp @@ -1,12 +1,12 @@ ///////////////////////////////////////////////////////////////////////////// // Name: ffile.cpp -// Purpose: wxFFile - encapsulates "FILE *" IO stream +// Purpose: wxFFile encapsulates "FILE *" IO stream // Author: Vadim Zeitlin // Modified by: // Created: 14.07.99 // RCS-ID: $Id$ // Copyright: (c) 1998 Vadim Zeitlin -// Licence: wxWindows license +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // ============================================================================ @@ -17,7 +17,7 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma implementation "ffile.h" #endif @@ -28,7 +28,7 @@ #pragma hdrstop #endif -#if wxUSE_FILE +#if wxUSE_FFILE #ifndef WX_PRECOMP #include "wx/intl.h" @@ -41,47 +41,45 @@ // implementation // ============================================================================ +// ---------------------------------------------------------------------------- +// seek and tell with large file support if available +// ---------------------------------------------------------------------------- + +#ifdef HAVE_FSEEKO +# define wxFseek fseeko +# define wxFtell ftello +#else +# define wxFseek fseek +# define wxFtell ftell +#endif + // ---------------------------------------------------------------------------- // opening the file // ---------------------------------------------------------------------------- -wxFFile::wxFFile(const wxChar *filename, const char *mode) +wxFFile::wxFFile(const wxChar *filename, const wxChar *mode) { Detach(); (void)Open(filename, mode); } -bool wxFFile::Open(const wxChar *filename, const char *mode) +bool wxFFile::Open(const wxChar *filename, const wxChar *mode) { - wxASSERT_MSG( !m_fp, _T("should close or detach the old file first") ); - -#if wxUSE_UNICODE - char *tmp_fname; - size_t fname_len; - - fname_len = wxStrlen(filename)+1; - tmp_fname = new char[fname_len]; - wxWX2MB(tmp_fname, filename, fname_len); - - m_fp = fopen(tmp_fname, mode); - - delete tmp_fname; -#else - m_fp = fopen(filename, mode); -#endif + wxASSERT_MSG( !m_fp, wxT("should close or detach the old file first") ); + m_fp = wxFopen(filename, mode); if ( !m_fp ) { wxLogSysError(_("can't open file '%s'"), filename); - return FALSE; + return false; } m_name = filename; - return TRUE; + return true; } bool wxFFile::Close() @@ -92,13 +90,13 @@ bool wxFFile::Close() { wxLogSysError(_("can't close file '%s'"), m_name.c_str()); - return FALSE; + return false; } Detach(); } - return TRUE; + return true; } // ---------------------------------------------------------------------------- @@ -107,8 +105,8 @@ bool wxFFile::Close() bool wxFFile::ReadAll(wxString *str) { - wxCHECK_MSG( str, FALSE, _T("invalid parameter") ); - wxCHECK_MSG( IsOpened(), FALSE, _T("can't read from closed file") ); + wxCHECK_MSG( str, false, wxT("invalid parameter") ); + wxCHECK_MSG( IsOpened(), false, wxT("can't read from closed file") ); clearerr(m_fp); @@ -124,7 +122,7 @@ bool wxFFile::ReadAll(wxString *str) { wxLogSysError(_("Read error on file '%s'"), m_name.c_str()); - return FALSE; + return false; } //else: just EOF @@ -132,13 +130,13 @@ bool wxFFile::ReadAll(wxString *str) *str += buf; } - return TRUE; + return true; } size_t wxFFile::Read(void *pBuf, size_t nCount) { - wxCHECK_MSG( pBuf, FALSE, _T("invalid parameter") ); - wxCHECK_MSG( IsOpened(), FALSE, _T("can't read from closed file") ); + wxCHECK_MSG( pBuf, FALSE, wxT("invalid parameter") ); + wxCHECK_MSG( IsOpened(), FALSE, wxT("can't read from closed file") ); size_t nRead = fread(pBuf, 1, nCount, m_fp); if ( (nRead < nCount) && Error() ) @@ -151,8 +149,8 @@ size_t wxFFile::Read(void *pBuf, size_t nCount) size_t wxFFile::Write(const void *pBuf, size_t nCount) { - wxCHECK_MSG( pBuf, FALSE, _T("invalid parameter") ); - wxCHECK_MSG( IsOpened(), FALSE, _T("can't write to closed file") ); + wxCHECK_MSG( pBuf, FALSE, wxT("invalid parameter") ); + wxCHECK_MSG( IsOpened(), FALSE, wxT("can't write to closed file") ); size_t nWritten = fwrite(pBuf, 1, nCount, m_fp); if ( nWritten < nCount ) @@ -167,30 +165,32 @@ bool wxFFile::Flush() { if ( IsOpened() ) { - if ( !fflush(m_fp) ) + // fflush returns non-zero on error + // + if ( fflush(m_fp) ) { wxLogSysError(_("failed to flush the file '%s'"), m_name.c_str()); - return FALSE; + return false; } } - return TRUE; + return true; } // ---------------------------------------------------------------------------- // seeking // ---------------------------------------------------------------------------- -bool wxFFile::Seek(long ofs, wxSeekMode mode) +bool wxFFile::Seek(wxFileOffset ofs, wxSeekMode mode) { - wxCHECK_MSG( IsOpened(), FALSE, _T("can't seek on closed file") ); + wxCHECK_MSG( IsOpened(), false, wxT("can't seek on closed file") ); int origin; switch ( mode ) { default: - wxFAIL_MSG(_T("unknown seek mode")); + wxFAIL_MSG(wxT("unknown seek mode")); // still fall through case wxFromStart: @@ -206,38 +206,53 @@ bool wxFFile::Seek(long ofs, wxSeekMode mode) break; } - if ( fseek(m_fp, ofs, origin) != 0 ) +#ifndef HAVE_FSEEKO + if ((long)ofs != ofs) + { + wxLogError(_("Seek error on file '%s' (large files not supported by stdio)"), m_name.c_str()); + + return false; + } +#endif + + if ( wxFseek(m_fp, ofs, origin) != 0 ) { wxLogSysError(_("Seek error on file '%s'"), m_name.c_str()); - return FALSE; + return false; } - return TRUE; + return true; } -size_t wxFFile::Tell() const +wxFileOffset wxFFile::Tell() const { - long rc = ftell(m_fp); - if ( rc == -1 ) + wxCHECK_MSG( IsOpened(), wxInvalidOffset, + _T("wxFFile::Tell(): file is closed!") ); + + wxFileOffset rc = wxFtell(m_fp); + if ( rc == wxInvalidOffset ) { wxLogSysError(_("Can't find current position in file '%s'"), m_name.c_str()); } - return (size_t)rc; + return rc; } -size_t wxFFile::Length() const +wxFileOffset wxFFile::Length() const { + wxCHECK_MSG( IsOpened(), wxInvalidOffset, + _T("wxFFile::Length(): file is closed!") ); + wxFFile& self = *(wxFFile *)this; // const_cast - size_t posOld = Tell(); - if ( posOld != (size_t)-1 ) + wxFileOffset posOld = Tell(); + if ( posOld != wxInvalidOffset ) { if ( self.SeekEnd() ) { - size_t len = Tell(); + wxFileOffset len = Tell(); (void)self.Seek(posOld); @@ -245,7 +260,7 @@ size_t wxFFile::Length() const } } - return (size_t)-1; + return wxInvalidOffset; } -#endif // wxUSE_FILE +#endif // wxUSE_FFILE