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#!/usr/bin/env bash
includefile=$1
excludefile=$2
## input variables:
## $filelist:
## A colon (':') separated list of files already read.
## Must be initialized to ":".
## $excludelist:
## A newline separated of element (support Shell Patterns) to exclude.
## $separator:
## The separator used in list for the output
##
## output variables:
## $list:
## A list of elements separated by the separator given in $separator.
## The new elements will be appended to the list.
readlist () {
local onelist
local onelistcontent
onelist=$1
if [ ":$onelist:" = "::" ] ; then return ; fi
if [ ! -f $onelist ] ; then return ; fi
if [ ":${filelist##*:$onelist:*}:" = "::" ] ; then return ; fi
filelist=":$onelist$filelist"
onelistcontent=`cat $onelist | sed "s=[ \t]*$==g" | while read line ; do echo -n $line ; echo -n ":" ; done`
OFS="$IFS"
IFS=":"
for line in $onelistcontent ; do
line2=${line##\#}
if [ ":$line:" = ":$line2:" ] ; then
for linex in $excludelist ; do
if [ ":${line##$linex}:" = "::" ] ; then line="" ; fi
done
if [ ":$line:" != "::" ] ; then
if [ ":$list:" = "::" ] ; then
list="$line"
else
list="$list$separator$line"
fi
fi
else
line3=${line2##include }
if [ ":$line3:" != ":$line2:" -a ":$line3:" != "::" ] ; then
readlist "$line3"
fi
fi
done
IFS="$OFS"
}
list=""
filelist=":"
excludelist=""
separator=":"
readlist "$excludefile"
excludelist="$list"
list=""
filelist=":"
separator="
"
readlist "$includefile"
echo "$list" | sort | uniq
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