#!/bin/bash

# define default project parameters.
prj=null
ver=1
rev=0

# source the project parameter file.
source proj

# loop for each unique part number in the bill of materials file.
for partno in $(awk -F ',' 'NF==4{print$4}' ${prj}-bom.csv | sort -u); do
  # find the number of occurrences of the part number in the BOM.
  n=$(awk -F ',' -v pn="${partno}" \
    'BEGIN {n = 0} $4 == pn {n++} END {print n}' \
    ${prj}-bom.csv)

  # compute the required length to keep a 40-column total width.
  len=${#partno}
  nsep=$(expr 40 - ${len})
  sep=""

  # build a separator string.
  for i in $(seq 1 ${nsep}); do
    sep="${sep} "
  done

  # print the final line of output.
  echo "${partno}${sep}${n}"
done

# sync the filesystem with the disks.
sync