X-Git-Url: http://git.subgeniuskitty.com/pforth/.git/blobdiff_plain/f1994bf609c5b053c5c0d7db2062b570fa9f5ead..ccd2b2a1dc0b1d207fb738593845e9be8b6e1d80:/csrc/pf_io.h

diff --git a/csrc/pf_io.h b/csrc/pf_io.h
index 4576e4f..db8fd92 100644
--- a/csrc/pf_io.h
+++ b/csrc/pf_io.h
@@ -19,6 +19,8 @@
 **
 ***************************************************************/
 
+#include "pf_types.h"
+
 #define PF_CHAR_XON    (0x11)
 #define PF_CHAR_XOFF   (0x13)
 
@@ -33,7 +35,6 @@ void sdTerminalTerm( void );
 void ioInit( void );
 void ioTerm( void );
 
-
 #ifdef PF_NO_CHARIO
     void sdEnableInput( void );
     void sdDisableInput( void );
@@ -84,11 +85,11 @@ void ioTerm( void );
     cell_t sdFlushFile( FileStream * Stream  );
     cell_t sdReadFile( void *ptr, cell_t Size, int32_t nItems, FileStream * Stream  );
     cell_t sdWriteFile( void *ptr, cell_t Size, int32_t nItems, FileStream * Stream  );
-    cell_t sdSeekFile( FileStream * Stream, off_t Position, int32_t Mode );
+    cell_t sdSeekFile( FileStream * Stream, file_offset_t Position, int32_t Mode );
     cell_t sdRenameFile( const char *OldName, const char *NewName );
     cell_t sdDeleteFile( const char *FileName );
     ThrowCode sdResizeFile( FileStream *, uint64_t Size);
-    off_t sdTellFile( FileStream * Stream );
+    file_offset_t sdTellFile( FileStream * Stream );
     cell_t sdCloseFile( FileStream * Stream );
     cell_t sdInputChar( FileStream *stream );
 
@@ -121,14 +122,18 @@ void ioTerm( void );
         #define sdFlushFile     fflush
         #define sdReadFile      fread
         #define sdWriteFile     fwrite
-        #if defined(WIN32) || defined(__NT__) || defined(AMIGA)
-            /* TODO To support 64-bit file offset we probably need fseeki64(). */
-            #define sdSeekFile      fseek
-            #define sdTellFile      ftell
-        #else
-            #define sdSeekFile      fseeko
-            #define sdTellFile      ftello
-        #endif
+
+        /*
+         * Note that fseek() and ftell() only support a long file offset.
+         * So 64-bit offsets may not be supported on some platforms.
+         * At one point we supported fseeko() and ftello() but they require
+         * the off_t data type, which is not very portable.
+         * So we decided to sacrifice vary large file support in
+         * favor of portability.
+         */
+        #define sdSeekFile      fseek
+        #define sdTellFile      ftell
+
         #define sdCloseFile     fclose
         #define sdRenameFile    rename
         #define sdInputChar     fgetc
@@ -140,6 +145,7 @@ void ioTerm( void );
         #define  PF_SEEK_CUR   (SEEK_CUR)
         #define  PF_SEEK_END   (SEEK_END)
 
+        /* TODO review the Size data type. */
         ThrowCode sdResizeFile( FileStream *, uint64_t Size);
 
         /*