@echo off
setlocal

iff "%1"=="" then
    echo Usage: MERGE mergeDir
	echo.
    echo MERGE eliminates files in mergeDir which are duplicated locally and moves
	echo files which are newer than local copies.
    goto end
endiff

if NOT ISDIR backup md backup

echo Backing up source directory...
set backupName=%@INSTR[0,2,%_DATE]%@INSTR[3,2,%_DATE]%@INSTR[0,2,%_TIME]%@INSTR[3,2,%_TIME]
pkzip -o -P backup\%backupName makefile src\*.asm src\*.h src\*.c* *.doc *.txt *.btm *.rfs names.h

set lastAge=%@FILEAGE[UPDATE.DAT]

echo Processing files...
for %a in (%1\*.*) (
    set b=%@filename[%a]
	if NOT exist %b set b=src\%@filename[%a]
	if NOT exist %b set b=seq\%@filename[%a]
	if NOT exist %b set b=qav\%@filename[%a]
    iff exist %b then
		echos Comparing %a:
		vcmpr %a %b nul > nul
		iff %? == 1 then
			echo   Same -- removing %a
			del %a /q
		else
			iff %@FILEAGE[%b] LT %lastAge .AND. %@FILEAGE[%a] GT %@FILEAGE[%b] then
				echo Replacing with newer
				move %a %b /q
			else
				echo   Different
			endiff
		endiff
    endiff
)

echo Merge complete.  Remaining files in %1 must be merged manually.

:end
endlocal