// Created: 29/01/98
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence: wxWindows license
+// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
#ifdef __GNUG__
-#pragma implementation "file.h"
+ #pragma implementation "file.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
-#include "wx/defs.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
+#if wxUSE_FILE
+
// standard
-#if defined(__WINDOWS__) && !defined(__GNUWIN32__)
+#if defined(__WXMSW__) && !defined(__GNUWIN32__) && !defined(__WXWINE__)
#include <io.h>
+
+#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
+
+ #include <windows.h> // for GetTempFileName
#elif (defined(__UNIX__) || defined(__GNUWIN32__))
- #include <unistd.h>
+ #include <unistd.h>
+ #ifdef __GNUWIN32__
+ #include <windows.h>
+ #endif
+#elif (defined(__WXPM__))
+ #include <io.h>
+ #define W_OK 2
+ #define R_OK 4
+#elif (defined(__WXSTUBS__))
+ // Have to ifdef this for different environments
+ #include <io.h>
+#elif (defined(__WXMAC__))
+ int access( const char *path, int mode ) { return 0 ; }
+ char* mktemp( char * path ) { return path ;}
+ #include <unistd.h>
+ #include <unix.h>
+ #define W_OK 2
+ #define R_OK 4
#else
- #error "Please specify the header with file functions declarations."
+ #error "Please specify the header with file functions declarations."
#endif //Win/UNIX
#include <stdio.h> // SEEK_xxx constants
#include <fcntl.h> // O_RDONLY &c
-#include <sys/types.h> // needed for stat
-#include <sys/stat.h> // stat
-
-// Microsoft compiler loves underscores, feed them to it
-#ifdef _MSC_VER
- // 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
-
- #define S_IREAD _S_IREAD
- #define S_IWRITE _S_IWRITE
-#else
- #define tell(fd) lseek(fd, 0, SEEK_CUR)
-#endif //_MSC_VER
-// there is no distinction between text and binary files under Unix
-#ifdef __UNIX__
- #define O_BINARY (0)
-#endif //__UNIX__
+#ifndef __MWERKS__
+ #include <sys/types.h> // needed for stat
+ #include <sys/stat.h> // stat
+#endif
-// wxWindows
-#include <wx/string.h>
-#include <wx/intl.h>
-#include <wx/file.h>
-#include <wx/log.h>
+#if defined(__BORLANDC__) || defined(_MSC_VER)
+ #define W_OK 2
+ #define R_OK 4
+#endif
+// 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 <unix.h>
+#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)
+ #define stat _stat
+#else // normal compiler
+ #define ACCESS(access) , (access)
+#endif // Salford C
+
+// wxWindows
+#include "wx/string.h"
+#include "wx/intl.h"
+#include "wx/file.h"
+#include "wx/log.h"
// ============================================================================
// implementation of wxFile
// ----------------------------------------------------------------------------
// static functions
// ----------------------------------------------------------------------------
-bool wxFile::Exists(const char *sz)
-{
- struct stat st;
- return !access(sz, 0) && !stat(sz, &st) && (st.st_mode & S_IFREG);
+bool wxFile::Exists(const wxChar *name)
+{
+ 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 !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 !wxAccess(name, 0) &&
+ !wxStat(name, &st) &&
+ (st.st_mode & S_IFREG);
+#endif
+#endif
+}
+
+bool wxFile::Access(const wxChar *name, OpenMode mode)
+{
+ int how = 0;
+
+ switch ( mode ) {
+ case read:
+ how = R_OK;
+ break;
+
+ case write:
+ how = W_OK;
+ break;
+
+ default:
+ wxFAIL_MSG(wxT("bad wxFile::Access mode parameter."));
+ }
+
+ return wxAccess(wxFNCONV(name), how) == 0;
}
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// ctors
-wxFile::wxFile(const char *szFileName, OpenMode mode)
+wxFile::wxFile(const wxChar *szFileName, OpenMode mode)
{
- m_fd = fd_invalid;
-
- Open(szFileName, mode);
-}
+ m_fd = fd_invalid;
+ m_error = FALSE;
-// dtor
-wxFile::~wxFile()
-{
- Close();
+ Open(szFileName, mode);
}
// create the file, fail if it already exists and bOverwrite
-bool wxFile::Create(const char *szFileName, bool bOverwrite)
+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
- int fd = bOverwrite ? creat(szFileName, 0)
- : open(szFileName, O_CREAT | O_EXCL);
-
- if ( fd == -1 ) {
- wxLogSysError("can't create file '%s'", szFileName);
- return FALSE;
- }
- else {
- Attach(fd);
- return TRUE;
- }
+ // 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);
+#else
+ 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);
+ return FALSE;
+ }
+ else {
+ Attach(fd);
+ return TRUE;
+ }
}
// open the file
-bool wxFile::Open(const char *szFileName, OpenMode mode)
+bool wxFile::Open(const wxChar *szFileName, OpenMode mode, int accessMode)
{
- int flags = O_BINARY;
-
- switch ( mode ) {
- case read:
- flags |= O_RDONLY;
- break;
-
- case write:
- flags |= O_WRONLY | O_CREAT;
- break;
-
- case read_write:
- flags |= O_RDWR;
- break;
- }
-
- int fd = open(szFileName, flags, S_IREAD | S_IWRITE);
+ int flags = O_BINARY;
+
+ switch ( mode ) {
+ case read:
+ 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 read_write:
+ flags |= O_RDWR;
+ break;
+ }
- if ( fd == -1 ) {
- wxLogSysError("can't open file '%s'", szFileName);
- return FALSE;
- }
- else {
- Attach(fd);
- return TRUE;
- }
+#ifdef __WXMAC__
+ int fd = open(wxUnix2MacFilename( szFileName ), flags, access);
+#else
+ int fd = wxOpen(wxFNCONV(szFileName), flags ACCESS(accessMode));
+#endif
+ if ( fd == -1 ) {
+ wxLogSysError(_("can't open file '%s'"), szFileName);
+ return FALSE;
+ }
+ else {
+ Attach(fd);
+ return TRUE;
+ }
}
// close
-void wxFile::Close()
+bool wxFile::Close()
{
- if ( IsOpened() ) {
- if ( close(m_fd) == -1 )
- wxLogSysError("can't close file descriptor %d", m_fd);
+ if ( IsOpened() ) {
+ if ( close(m_fd) == -1 ) {
+ wxLogSysError(_("can't close file descriptor %d"), m_fd);
+ m_fd = fd_invalid;
+ return FALSE;
+ }
+ else
+ m_fd = fd_invalid;
+ }
- m_fd = fd_invalid;
- }
+ return TRUE;
}
// ----------------------------------------------------------------------------
// read
off_t wxFile::Read(void *pBuf, off_t nCount)
{
- wxCHECK_RET( (pBuf != NULL) && IsOpened(), 0 );
+ wxCHECK( (pBuf != NULL) && IsOpened(), 0 );
- int iRc = ::read(m_fd, pBuf, nCount);
- if ( iRc == -1 ) {
- wxLogSysError("can't read from file descriptor %d", m_fd);
- return ofsInvalid;
- }
- else
- return (uint)iRc;
+#ifdef __MWERKS__
+ int iRc = ::read(m_fd, (char*) pBuf, nCount);
+#else
+ int iRc = ::read(m_fd, pBuf, nCount);
+#endif
+ if ( iRc == -1 ) {
+ wxLogSysError(_("can't read from file descriptor %d"), m_fd);
+ return wxInvalidOffset;
+ }
+ else
+ return (size_t)iRc;
}
// write
-bool wxFile::Write(const void *pBuf, uint nCount)
+size_t wxFile::Write(const void *pBuf, size_t nCount)
{
- wxCHECK_RET( (pBuf != NULL) && IsOpened(), 0 );
+ wxCHECK( (pBuf != NULL) && IsOpened(), 0 );
- int iRc = ::write(m_fd, pBuf, nCount);
- if ( iRc == -1 ) {
- wxLogSysError("can't write to file descriptor %d", m_fd);
- return FALSE;
- }
- else
- return TRUE;
+#ifdef __MWERKS__
+ int iRc = ::write(m_fd, (const char*) pBuf, nCount);
+#else
+ int iRc = ::write(m_fd, pBuf, nCount);
+#endif
+ if ( iRc == -1 ) {
+ wxLogSysError(_("can't write to file descriptor %d"), m_fd);
+ m_error = TRUE;
+ return 0;
+ }
+ else
+ return iRc;
}
// flush
bool wxFile::Flush()
{
- if ( IsOpened() ) {
- // ## fsync() is not ANSI (BSDish)
-// if ( fsync(m_fd) == -1 ) { // TODO
- if (TRUE) {
- wxLogSysError("can't flush file descriptor %d", m_fd);
- return FALSE;
+ if ( IsOpened() ) {
+#if defined(__VISUALC__) || wxHAVE_FSYNC
+ if ( wxFsync(m_fd) == -1 )
+ {
+ wxLogSysError(_("can't flush file descriptor %d"), m_fd);
+ return FALSE;
+ }
+#else // no fsync
+ // just do nothing
+#endif // fsync
}
- }
- return TRUE;
+ return TRUE;
}
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// seek
-off_t wxFile::Seek(off_t ofs, SeekMode mode)
+off_t wxFile::Seek(off_t ofs, wxSeekMode mode)
{
- wxASSERT( IsOpened() );
+ wxASSERT( IsOpened() );
- int flag = -1;
- switch ( mode ) {
- case FromStart:
- flag = SEEK_SET;
- break;
+ int origin;
+ switch ( mode ) {
+ default:
+ wxFAIL_MSG(_("unknown seek origin"));
- case FromCurrent:
- flag = SEEK_CUR;
- break;
+ case wxFromStart:
+ origin = SEEK_SET;
+ break;
- case FromEnd:
- flag = SEEK_END;
- break;
+ case wxFromCurrent:
+ origin = SEEK_CUR;
+ break;
- default:
- wxFAIL_MSG("unknown seek origin");
- }
+ case wxFromEnd:
+ origin = SEEK_END;
+ break;
+ }
- int iRc = lseek(m_fd, ofs, flag);
- if ( iRc == -1 ) {
- wxLogSysError("can't seek on file descriptor %d", m_fd);
- return ofsInvalid;
- }
- else
- return (off_t)iRc;
+ int iRc = lseek(m_fd, ofs, origin);
+ if ( iRc == -1 ) {
+ wxLogSysError(_("can't seek on file descriptor %d"), m_fd);
+ return wxInvalidOffset;
+ }
+ else
+ return (off_t)iRc;
}
// get current off_t
off_t wxFile::Tell() const
{
- wxASSERT( IsOpened() );
+ wxASSERT( IsOpened() );
- int iRc = tell(m_fd);
- if ( iRc == -1 ) {
- wxLogSysError("can't get seek position on file descriptor %d", m_fd);
- return ofsInvalid;
- }
- else
- return (off_t)iRc;
+ 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;
}
// get current file length
off_t wxFile::Length() const
{
- wxASSERT( IsOpened() );
+ wxASSERT( IsOpened() );
- #ifdef _MSC_VER
+#ifdef __VISUALC__
int iRc = _filelength(m_fd);
- #else
- int iRc = tell(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 ) {
- // restore old position
- if ( ((wxFile *)this)->Seek(iRc) == -1 ) {
- // error
- iLen = -1;
+ // @ have to use const_cast :-(
+ int iLen = ((wxFile *)this)->SeekEnd();
+ if ( iLen != -1 ) {
+ // restore old position
+ if ( ((wxFile *)this)->Seek(iRc) == -1 ) {
+ // error
+ iLen = -1;
+ }
}
- }
- iRc = iLen;
+ iRc = iLen;
}
+#endif // VC++
- #endif //_MSC_VER
-
- if ( iRc == -1 ) {
- wxLogSysError("can't find length of file on file descriptor %d", m_fd);
- return ofsInvalid;
- }
- else
- return (off_t)iRc;
+ if ( iRc == -1 ) {
+ wxLogSysError(_("can't find length of file on file descriptor %d"), m_fd);
+ return wxInvalidOffset;
+ }
+ else
+ return (off_t)iRc;
}
// is end of file reached?
bool wxFile::Eof() const
{
- wxASSERT( IsOpened() );
-
- // TODO: no eof in GnuWin32
-
-#ifdef __LINUX__
-
- int iRc = Tell() == Length();
-
-#else
-
-#if defined(__GNUWIN32__)
- int iRc = -1;
-#else
- int iRc = eof(m_fd);
-#endif
-
-#endif
-
- 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.");
- }
+ wxASSERT( IsOpened() );
+
+ int iRc;
+
+#if defined(__UNIX__) || defined(__GNUWIN32__) || defined( __MWERKS__ ) || defined(__SALFORDC__)
+ // @@ this doesn't work, of course, on unseekable file descriptors
+ off_t ofsCur = Tell(),
+ ofsMax = Length();
+ if ( ofsCur == wxInvalidOffset || ofsMax == wxInvalidOffset )
+ iRc = -1;
+ else
+ iRc = ofsCur == ofsMax;
+#else // Windows and "native" compiler
+ iRc = eof(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."));
+ }
- return TRUE;
+ return TRUE;
}
// ============================================================================
// ----------------------------------------------------------------------------
wxTempFile::wxTempFile(const wxString& strName)
{
- Open(strName);
+ Open(strName);
}
bool wxTempFile::Open(const wxString& strName)
{
- m_strName = strName;
- m_strTemp = tmpnam(NULL);
- return m_file.Open(m_strTemp, wxFile::write);
+ 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;
+ ::DosCreateDir(m_strTemp.GetWriteBuf(MAX_PATH), NULL);
+#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
+
+ 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;
+
+ wxStructStat st;
+ if ( stat(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;
+ }
+ else
+ {
+ // file probably didn't exist, just create with default mode _using_
+ // user's umask (new files creation should respet umask)
+ changedUmask = FALSE;
+ }
+#endif // Unix
+
+ bool ok = m_file.Open(m_strTemp, wxFile::write, access);
+
+#ifdef __UNIX__
+ if ( changedUmask )
+ {
+ // restore umask now that the file is created
+ (void)umask(umaskOld);
+ }
+#endif // Unix
+
+ return ok;
}
// ----------------------------------------------------------------------------
wxTempFile::~wxTempFile()
{
- if ( IsOpened() )
- Discard();
+ if ( IsOpened() )
+ Discard();
}
bool wxTempFile::Commit()
{
- m_file.Close();
+ m_file.Close();
- if ( wxFile::Exists(m_strName) && remove(m_strName) != 0 ) {
- wxLogSysError("can't remove file '%s'", m_strName.c_str());
+#ifndef __WXMAC__
+ if ( wxFile::Exists(m_strName) && wxRemove(m_strName) != 0 ) {
+ wxLogSysError(_("can't remove file '%s'"), m_strName.c_str());
+ return FALSE;
+ }
+
+ 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(m_strTemp, m_strName) != 0 ) {
- wxLogSysError("can't commit changes to file '%s'", m_strName.c_str());
+ 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;
+ return TRUE;
}
void wxTempFile::Discard()
{
- m_file.Close();
- if ( remove(m_strTemp) != 0 )
- wxLogSysError("can't remove temporary file '%s'", m_strTemp.c_str());
+ m_file.Close();
+#ifndef __WXMAC__
+ if ( wxRemove(m_strTemp) != 0 )
+ wxLogSysError(_("can't remove temporary file '%s'"), m_strTemp.c_str());
+#else
+ if ( remove( wxUnix2MacFilename(m_strTemp.fn_str())) != 0 )
+ wxLogSysError(_("can't remove temporary file '%s'"), m_strTemp.c_str());
+#endif
}
+
+#endif
+
projects / wxWidgets.git / blobdiff