#!/bin/sh
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #
# This is a B-to-C translator, designed to be called from a makefile as:  #
#   .b.c:  ;bc 0-6t 7-9x version <$*.b >$@                                #
# What this command does is enable all lines that start  with  ":0"  thru #
# ":6"  or ":t" and disable all lines that start with ":7" thru ":9" or
# ":x".  Enabling is done by just removing the ":."; disabling is done by
# blanking out the line (but leaving it there so cc's line numbers will 
# be accurate). We also look for an initial line of the form:             #
#    static char ID[] = "@(#) foobar %D";                                 #
# We replace the %D with the date.  This will convert a foo.b file  to  a #
# compilable  foo.c  file, with an ID string containing the current date, #
# and with debug lines ":0" thru ":6" enabled.                            #
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #
if [ $# -lt 2 ];then echo 'Usage: $0 0-x y-9 version <x.b >x.c'; exit 1;fi
E="$1";shift
D="$1";shift
if [ $# -gt 0 ];then V="$1";shift; fi
if [ -f Copyright ];then cat Copyright; fi
sed -e 's/^:['$E']//' \
	-e 's/^:['$D'].*//' \
	-e '1,3s|%D|'`date +%y/%m/%d`'|' \
	-e '1,3s|%V|Version '$V'|'
exit 0
# The "exit 0" is done because some seds give a bogus exit status.