/******************************************************************************

    MODULE
	Touch.c

    DESCRIPTION
	Touch checks the existance (via Lock) of files
	and then either calls SetFileDate if they exist
	or else creates new files

    NOTES
	Kickstart 2.0+ required
	compiles w/ SAS/C v6.51

    BUGS
	none known

    TODO
	wildcard processing

    EXAMPLES

    SEE ALSO

    INDEX

    HISTORY
	12-02-95 b_noll created (accidently deleted the source)
	12-02-95 b_noll created
	20-02-95 b_noll restructured source
	21-02-95 b_noll added version/format-prefix/offset
	20-03-95 b_noll added args diagnostics

    AUTHOR
	Bernd Noll, Brunnenstrasse 55, D-67661 Kaiserslautern
	b_noll@informatik.uni-kl.de

******************************************************************************/

/**************************************
	    Includes
**************************************/

#ifndef   EXEC_LIBRARIES_H
# include <exec/libraries.h>
#endif /* EXEC_LIBRARIES_H */

#ifndef   CLIB_EXEC_PROTOS_H
# include <clib/exec_protos.h>
#endif /* CLIB_EXEC_PROTOS_H */

#ifndef   DOS_DOS_H
# include <dos/dos.h>
#endif /* DOS_DOS_H */

#ifndef   CLIB_DOS_PROTOS_H
# include <clib/dos_protos.h>
#endif /* CLIB_DOS_PROTOS_H */

#include <proto/dos.h>
#include <proto/exec.h>

/**************************************
	 Defines & Structures
**************************************/

#ifndef ABSEXECBASE
#define ABSEXECBASE ((struct ExecBase **)4L)
#endif

struct _arg {
/* ******************** USER FORMAT ******************** */
#define FORMAT "FILE/A/M"

    STRPTR *file;

/* ******************** USER FORMAT ******************** */
}; /* struct _argv */

#define MAXPATHLEN 256
#define MAXLINELEN 256

#define VERSIONPREFIX	"\0$VER: "
#define VERSIONOFFSET	0
#define FORMATPREFIX	"\0$ARG: "
#define FORMATOFFSET	7

/**************************************
	    Implementation
**************************************/

long _main (void)
{
    const char* version = VERSIONPREFIX "Touch 1.2 " __AMIGADATE__ + VERSIONOFFSET;
    long retval = RETURN_FAIL;
    struct ExecBase*SysBase = *ABSEXECBASE;
    struct Library* DOSBase;

    if (DOSBase = OpenLibrary (DOSNAME, 37)) {
	struct _arg argv = { 0 };
	APTR   args;
	retval	 = RETURN_ERROR;
	if (args = (void*)ReadArgs(FORMATPREFIX FORMAT + FORMATOFFSET, (LONG*)&argv, NULL)) {
/* ******************** USER BODY ******************** */

	    int    i;
	    BPTR   bptr;
	    STRPTR name;
	    struct DateStamp ds;

	    retval = RETURN_OK;

	    for (i = 0; name = argv.file[i]; ++i) {

		DateStamp(&ds);

		if (bptr = Lock(name, SHARED_LOCK)) {
		    UnLock(bptr);

		    if (!SetFileDate(name, &ds)) {
			retval = RETURN_ERROR;
			break;
		    } /* if */
		} else if (bptr = Open(name, MODE_NEWFILE)) {
		    Close(bptr);
		} else {
		    retval = RETURN_ERROR;
		    break;
		} /* if */
	    } /* for */

/* ******************** USER BODY ******************** */
	    FreeArgs (args);
	} /* if */

	if (retval > RETURN_WARN)
	    PrintFault(IoErr(), "Touch");

	CloseLibrary (DOSBase);
    } /* if */
    return (retval);
} /* _main */

/******************************************************************************
*****  END Touch.c
******************************************************************************/