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- /*
- (C) 1995-96 AROS - The Amiga Replacement OS
- $Id: flush.c,v 1.3 1996/08/13 13:52:46 digulla Exp $
- $Log: flush.c,v $
- Revision 1.3 1996/08/13 13:52:46 digulla
- Replaced <dos/dosextens.h> by "dos_intern.h" or added "dos_intern.h"
- Replaced __AROS_LA by __AROS_LHA
-
- Revision 1.2 1996/08/01 17:40:51 digulla
- Added standard header for all files
-
- Desc:
- Lang: english
- */
- #include <dos/dosextens.h>
- #include <clib/dos_protos.h>
-
- /*****************************************************************************
-
- NAME */
- #include <clib/dos_protos.h>
-
- __AROS_LH1(LONG, Flush,
-
- /* SYNOPSIS */
- __AROS_LHA(BPTR, file, D1),
-
- /* LOCATION */
- struct DosLibrary *, DOSBase, 60, Dos)
-
- /* FUNCTION
- Flushes any pending writes on the file. If the file was used
- for input and there is still some data to read it tries to
- seek back to the expected position.
-
- INPUTS
- file - filehandle
-
- RESULT
- !=0 on success, 0 on error. IoErr() gives additional information
- in that case.
-
- NOTES
-
- EXAMPLE
-
- BUGS
-
- SEE ALSO
-
- INTERNALS
-
- HISTORY
- 29-10-95 digulla automatically created from
- dos_lib.fd and clib/dos_protos.h
-
- *****************************************************************************/
- {
- __AROS_FUNC_INIT
- __AROS_BASE_EXT_DECL(struct DosLibrary *,DOSBase)
-
- /* Get pointer to filehandle */
- struct FileHandle *fh=(struct FileHandle *)BADDR(file);
- long success=1;
-
- /* If the file is in write mode... */
- if(fh->fh_Flags&FHF_WRITE)
- {
- UBYTE *pos;
- /* Unset write flag */
- fh->fh_Flags&=~FHF_WRITE;
-
- /* Write the data. (In many pieces if the first one isn't enough). */
- pos=fh->fh_Buf;
- while(pos!=fh->fh_Pos)
- {
- LONG size;
- size=Write(file,pos,fh->fh_Pos-pos);
-
- /* An error happened? No success. */
- if(size<0)
- {
- success=0;
- break;
- }
- pos+=size;
- }
- }else if(fh->fh_Pos<fh->fh_End)
- /* Read mode. Try to seek back to the current position. */
- if(Seek(file,fh->fh_Pos-fh->fh_End,OFFSET_CURRENT)<0)
- success=0;
- /* Reinit the buffer and return. */
- fh->fh_Pos=fh->fh_End=fh->fh_Buf;
- return success;
- __AROS_FUNC_EXIT
- } /* Flush */
-