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36 lines
880 B
36 lines
880 B
#!/bin/sh -f
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# a script to transform a tag name, a list of tag names (ANDed then),
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# or a complex boolean expression into a list of package list names.
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# examples of expected stdin:
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#
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# kde
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# live gnome
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# (base && (kernel || apt || alterator))
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#
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# NB: tags are processed using word boundaries,
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# so avoid using "-" in tag names
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DIR="${1:?need base directory}"
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warn() {
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echo "$0: WARNING: $*" >&2
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exit
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}
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[ -d "$DIR" ] || warn "$DIR nonexistent"
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cd "$DIR" || warn "cannot change to $DIR"
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# NB: care with quoting
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transformed="$(sed \
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-e "s,\([^&|! ()']\+\),-regex ^.*\\\\<\1\\\\>.*$,g" \
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-e "s, *&& *, -a ,g" \
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-e "s, *|| *, -o ,g" \
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-e "s, *! *, ! ,g" \
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-e "s, *( *, ( ,g" \
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-e "s, *) *, ) ,g")"
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[ "$DEBUG" = 2 ] && echo "`basename $0`: transformed = \"$transformed\"" >&2
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[ -z "$transformed" ] ||
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find $transformed \
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| sed 's,^\./,,' \
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| egrep -v '(\.sw.|~)$'
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