Improved regex for finding violated slack

sweep.bash

@@ -35,7 +35,6 @@ PERIODS=(10.0 5.0 3.333 2.5 2.0 1.666 1.428 1.25 1.111 1.0)
 GENERICS=( "float_ip=0,pipe_stages=1" "float_ip=0,pipe_stages=2"
            "float_ip=1,pipe_stages=1" "float_ip=1,pipe_stages=2" )
 
-
 # Design clock name to be sweept. The design MUST have a clock signal.
 CLOCK_NAME="clk"
 
@@ -45,9 +44,9 @@ CLOCK_NAME="clk"
 RETIME_ENABLE="YES"
 
 # Set EXCLUDE_NEGATIVE_SLACK to 'YES' if you want to exclude sweep points which
-# had their timing requirement unmet, i.e., sweep points with negative slack. If
-# set to 'NO', sweep points with negative slack are keept in the resulting CSV
-# file, but are still distinguishible through the slack column which will be
+# had their timing requirement violated, i.e., sweep points with negative slack.
+# If set to 'NO', sweep points with negative slack are kept in the resulting
+# CSV file, but are still distinguishible through the slack column which will be
 # negative. Set to 'YES' or 'NO' (note the CAPITALIZATION).
 EXCLUDE_NEGATIVE_SLACK="YES"
 
@@ -87,8 +86,10 @@ function sweep_to_csv() {
 
     local timing_files
     if [ "${EXCLUDE_NEGATIVE_SLACK}" = "YES" ]; then
-        # Extract non-slack violated 'timing.txt' files.
-        timing_files=$(grep -riL "(VIOLATED)" "${sweep_data_dir}"/*/timing.txt)
+        # Extract non-slack violated 'timing.txt' files. Files with violated
+        # slack should contain the term "(VIOLATED", not necessary with ending
+        # parentheses.
+        timing_files=$(grep -riL "(VIOLATED" "${sweep_data_dir}"/*/timing.txt)
     else # ${EXCLUDE_NEGATIVE_SLACK} -eq "NO"
         # Extract all all 'timing.txt' files.
         timing_files=$(echo "${sweep_data_dir}"/*/timing.txt)
@@ -109,7 +110,8 @@ function sweep_to_csv() {
         power=$(awk '/Total\s+[0-9\.e-]+\s[a-z]{0,1}W/{print $(NF-1)}' \
             "${cur_dir}/power.txt")
         area=$(awk '/Total cell area:/{print $NF}' "${cur_dir}/area.txt")
-        slack=$(awk '/slack (\(MET\))|(\(VIOLATED\))/{print $3}' "${cur_dir}/timing.txt")
+        # "(MET" and "(VIOLATED" does not necessary contain parentheses ending
+        slack=$(awk '/slack (\(MET)|(\(VIOLATED)/{print $(NF)}' "${cur_dir}/timing.txt")
 
         # Append to CSV.
         echo "${period}, ${area}, ${power}, ${slack}" >> "${csv_out}"