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tree)
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#!/bin/sh
set -e
text="$(cat)"
expr='\(0x[0-9a-fA-F]\+\|[0-9]\+\)[Ll]*[Uu]*[Ll]*'
expr='\(\*\|\/\|[+~-]\|<<\|>>\)\?\s*'"$expr"
expr='\('"$expr"'\|(\|)\)'
expr='\s*\('"$expr"'\s*\)\+'
filter () {
sed -n 's/^\s*#\s*define\s\+\('"$1"'\)\s\+\('"$expr"'\)\s*\(\/.*\)\?$/\1 \2/p'
}
if test $# = 0; then
printf '%s\n' "$text" | filter '[A-Z0-9_]\+'
else
for prefix; do
printf '%s\n' "$text" | filter "$prefix"'_[A-Z0-9_]\+'
done
fi | \
while read name value; do
value="$(printf '%s\n' "$value" | tr -d ULul)"
value=$(printf '%s\n' "$(( $value ))" | cut -d . -f 1)
printf '%s %s\n' "$name" "$value"
done
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