fix-denue-inegi-csv.sh

#!/bin/sh
# Fixes CSV files from DENUE (INEGI), which have some tuples/registers
# splitted in two lines.
#
# Copyright © 2015 Antonio Hernández Blas <hba.nihilismus@gmail.com>
# This program is free software. It comes without any warranty, to
# the extent permitted by applicable law. You can redistribute it
# and/or modify it under the terms of the Do What The Fuck You Want
# To Public License, Version 2, as published by Sam Hocevar. See
# http://www.wtfpl.net/ for more details.

me=$(basename $0)
input_file=$1
output_file=FIXED_${input_file}
tmp_file=TMP_${input_file}

if [ ! -f "${input_file}" ]; then
  echo
  echo "Error, you must indicate which CSV file to proccess"
  echo "Example:"
  echo "    [$(whoami)@$(hostname) $(basename $(pwd))]$ sh ${me} DENUE_INEGI_x.csv"
  echo
  exit 1
fi

cat /dev/null > ${output_file}

echo
echo "> Input file: ${input_file}"

fromdos < ${input_file} > ${tmp_file}

total_lines=$(wc -l ${tmp_file} | cut -d ' ' -f 1)
current_line=1
current_error=1

echo "> Number of lines to process: ${total_lines} ..."
echo

cat ${tmp_file} | while read line; do 
  if $(echo $line | grep -qE '"$'); then 
    echo -en "Current line: ${current_line}\r\
                                         \rCurrent line: ${current_line}"
    echo $line >> ${output_file}
  else
    echo
    echo "  Error #${current_error} in line: ${current_line}"
    echo -n $line >> ${output_file}
    current_error=$(expr ${current_error} + 1)
  fi

  current_line=$(expr ${current_line} + 1)
done 

echo
echo
echo "> Done"
echo "> Output file: ${output_file}"
echo

rm -f ${tmp_file}
#EOF