X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f35746ceeda33434574d667f81d7e6e8b18b7c46..b9efe021b554fa3967d1442cf758435c5cd5ae8f:/src/common/file.cpp

diff --git a/src/common/file.cpp b/src/common/file.cpp
index 637d450da5..9985b9d448 100644
--- a/src/common/file.cpp
+++ b/src/common/file.cpp
@@ -14,7 +14,7 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
     #pragma implementation "file.h"
 #endif
 
@@ -29,7 +29,6 @@
 
 // standard
 #if defined(__WXMSW__) && !defined(__GNUWIN32__) && !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
-  #include  <io.h>
 
 #ifndef __SALFORDC__
     #define   WIN32_LEAN_AND_MEAN
@@ -55,12 +54,15 @@
 #endif
 
 #elif defined(__WXMSW__) && defined(__WXWINCE__)
-    // TODO: what to include?
+    #include  "wx/msw/missing.h"
+#elif (defined(__OS2__))
+    #include <io.h>
 #elif (defined(__UNIX__) || defined(__GNUWIN32__))
     #include  <unistd.h>
+    #include  <time.h>
     #include  <sys/stat.h>
     #ifdef __GNUWIN32__
-        #include <windows.h>
+        #include "wx/msw/wrapwin.h"
     #endif
 #elif defined(__DOS__)
     #if defined(__WATCOMC__)
@@ -72,8 +74,6 @@
     #else
         #error  "Please specify the header with file functions declarations."
     #endif
-#elif (defined(__WXPM__))
-    #include <io.h>
 #elif (defined(__WXSTUBS__))
     // Have to ifdef this for different environments
     #include <io.h>
@@ -85,27 +85,13 @@
 #endif
     char* mktemp( char * path ) { return path ;}
     #include <stat.h>
-    #include  <unistd.h>
+    #include <unistd.h>
 #else
     #error  "Please specify the header with file functions declarations."
 #endif  //Win/UNIX
 
 #include  <stdio.h>       // SEEK_xxx constants
 
-#ifndef __WXWINCE__
-#include  <fcntl.h>       // O_RDONLY &c
-#endif
-
-#ifdef __WXWINCE__
-// Nothing
-#elif !defined(__MWERKS__)
-    #include  <sys/types.h>   // needed for stat
-    #include  <sys/stat.h>    // stat
-#elif defined(__MWERKS__) && ( defined(__WXMSW__) || defined(__MACH__) )
-    #include  <sys/types.h>   // needed for stat
-    #include  <sys/stat.h>    // stat
-#endif
-
 // Windows compilers don't have these constants
 #ifndef W_OK
     enum
@@ -139,7 +125,7 @@
     #define ACCESS(access)  , (access)
 #endif // Salford C
 
-// wxWindows
+// wxWidgets
 #ifndef WX_PRECOMP
     #include  "wx/string.h"
     #include  "wx/intl.h"
@@ -158,6 +144,7 @@
     #include "wx/msw/private.h"
 #endif
 
+
 // ============================================================================
 // implementation of wxFile
 // ============================================================================
@@ -194,12 +181,7 @@ 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
 }
 
 // ----------------------------------------------------------------------------
@@ -210,7 +192,7 @@ 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);
 }
@@ -222,93 +204,29 @@ 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;
+        return false;
     }
     else
     {
         Attach(fd);
-        return TRUE;
+        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 )
@@ -339,16 +257,23 @@ 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;
+        return false;
     }
     else {
         Attach(fd);
-        return TRUE;
+        return true;
     }
 }
 
@@ -356,21 +281,17 @@ bool wxFile::Open(const wxChar *szFileName, OpenMode mode, int accessMode)
 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;
 }
 
 // ----------------------------------------------------------------------------
@@ -378,28 +299,19 @@ 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
@@ -407,49 +319,34 @@ 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
+#if defined(__VISUALC__) || wxHAVE_FSYNC
         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
     }
 
-    return TRUE;
+    return true;
 }
 
 // ----------------------------------------------------------------------------
@@ -457,38 +354,13 @@ bool wxFile::Flush()
 // ----------------------------------------------------------------------------
 
 // seek
-off_t wxFile::Seek(off_t ofs, wxSeekMode mode)
+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") );
 
-#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;
-    }
-
-    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:
@@ -507,81 +379,55 @@ 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?
@@ -589,48 +435,30 @@ 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;
 }
 
 // ============================================================================
@@ -668,13 +496,13 @@ 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 )
     {
@@ -691,11 +519,13 @@ 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;
 }
 
 // ----------------------------------------------------------------------------
@@ -714,15 +544,15 @@ 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()