#!/bin/bash # CSV to JSON converter using BASH # original script from https://gist.github.com/dsliberty/3de707bc656cf757a0cb # Usage ./csv2json.sh input.csv > output.json # cat <input.csv> | csv2json > output.json #set -x shopt -s extglob input="${1:-/dev/stdin}" SEP="," [ -z "${input}" ] && echo "No CSV input file specified" && exit 1 [ ! -e "${input}" ] && echo "Unable to locate ${input}" && exit 1 csv_nextField() { local line="$(echo "${1}" | sed 's/\r//g')" local start=0 local stop=0 if [[ -z "${line}" ]]; then return 0 fi local offset=0 local inQuotes=0 while [[ -n "${line}" ]]; do local char="${line:0:1}" line="${line:1}" if [[ "${char}" == "${SEP}" && ${inQuotes} -eq 0 ]]; then inQuotes=0 break elif [[ "${char}" == '"' ]]; then if [[ ${inQuotes} -eq 1 ]]; then inQuotes=0 else inQuotes=1 fi else echo -n "${char}" fi offset=$(( ${offset} + 1 )) done echo "" return $(( ${offset} + 1 )) } read -r first_line < "${input}" a=0 headings=$(echo "${first_line}" | awk -F"${SEP}" {'print NF'}) if [ "${input}" = "/dev/stdin" ]; then while read -r line do lines_str+="$line"$'\n' c=1 done < "${input}" else lines_str="$(cat "${input}")" c=0 fi lines_num=$(echo "${lines_str}" | wc -l) while [[ ${a} -lt ${headings} ]]; do field="$(csv_nextField "${first_line}")" first_line="${first_line:${?}}" head_array[${a}]="${field}" a=$(( ${a} + 1 )) done #c=0 echo "[" while [ ${c} -lt ${lines_num} ] do read -r each_line each_line="$(echo "${each_line}" | sed 's/\r//g')" if [[ ${c} -eq 0 ]]; then c=$(( ${c} + 1 )) else d=0 echo " {" while [[ ${d} -lt ${headings} ]]; do item="$(csv_nextField "${each_line}")" each_line="${each_line:${?}}" echo -n " \"${head_array[${d}]}\": " case "${item}" in "") echo -n "null" ;; null|true|false|\"*\"|+([0123456789])) echo -n ${item} ;; *) echo -n "\"${item}\"" ;; esac d=$(( ${d} + 1 )) [[ ${d} -lt ${headings} ]] && echo "," || echo "" done echo -n " }" c=$(( ${c} + 1 )) [[ ${c} -lt ${lines_num} ]] && echo "," || echo "" fi done <<< "${lines_str}" echo "]"
Article Number: 656
Posted: Mon, Jan 20, 2020 11:13 AM
Last Updated: Mon, Jan 20, 2020 11:13 AM
Online URL: http://kb.ictbanking.net/article.php?id=656