caravel/scripts/get_net_length.bash

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#!/bin/env bash
# usage get_net_length.bash merged.lef design.def wire_length.txt
set -u
{
openroad -exit -no_splash <<EOF
read_lef $1
read_def $2
variable odb_block [[[::ord::get_db] getChip] getBlock]
set odb_nets [odb::dbBlock_getNets \$::odb_block]
set fp [open "$3" w]
foreach net \$odb_nets {
set net_name [odb::dbNet_getName \$net]
set wire [odb::dbNet_getWire \$net]
if {\$wire != "NULL"} {
set wire_length [odb::dbWire_getLength \$wire]
set wire_length [expr \$wire_length / 1000.0]
puts \$fp "\$net_name \$wire_length"
}
}
close \$fp
EOF
} > $(dirname $3)/get_net_length-openroad.log
filename=$(basename $3)
filename_no_ext="${filename%%.*}"
sort_file_path="$(dirname $3)/${filename_no_ext}-sorted.txt"
cat $3 | sort -k 2 -n | column -t > $sort_file_path
echo "wrote to $sort_file_path"