# Copyright (c) 1999,2000 Apple Computer, Inc.
# All rights reserved.

# This file defines various functions for transforming text and
# manipulating variables

/ default = / ;

# NonObjectFiles <non-object files returned> : <list of files>
# Returns only files not in $(OBJECT_FILES) or $(OBJECT_FILES_$(ARCH))
# for ARCH in $(ARCHS)
rule NonObjectFiles
{
    $(1) = ;
    for X in $(2) {
        if ! $(X) in $(OBJECT_FILES) {
            REJECT = ;
            for ARCH in $(ARCHS) {
                if $(X) in $(OBJECT_FILES_$(ARCH)) {
                    REJECT = YES ;
                }
            }
            if ! $(REJECT) {
                $(1) += $(X) ;
            }
        }
    }
}

#
# RemovePrefixPath <variable> : <prefix> : <path-with-prefix>
#  removes the given prefix from the path and puts the result
# in the given variable
#
rule RemovePrefixPath
{
    local newname = $(3:BS) ;
    local newdir = $(3:D) ;
    local INDEX ;
    if $(2) != "." {
	for INDEX in 1 2 3 4 5 6 7 8 9 10 {
	    if $(newdir) != $(2) {
		newname = $(newdir:BS)/$(newname) ;
		newdir = $(newdir:D) ;
	    }
	}
    }
    else {
	newname = $(3) ;
    }
    $(1) = $(newname) ;
}