Converting (like) [XPATH](https://gist.github.com/search?q=user%3Atd-shi+filename%3A.sh+toXPATH) to XML. [List Repository](https://github.com/td-shi/ShellScriptsOnGist)

toXML.sh

#!/bin/bash --posix
# -*- coding:utf-8 -*-

# === Coding shell scripting Memo ==============================================
# ${<name>#<pattern>} :: matching delete with shortest by forword.
# ${<name>##<pattern>} :: matching delete with longest by forword.
# ${<name>%<pattern>} :: matching delete with shortest by backword.
# ${<name>%%<pattern>} :: mathing delete with longest by backword.
# ${<name>/<before>/<after>} :: replace only first matching.
# ${<name>//<before>/<after>} :: replace all matching.
# ${<name>:-<value>} :: if no yet set value, return value.
# ${<name>:=<value>} :: if no yet set value, return value and set.

# ". <shell script>" is to keep current shell and take over environment.

# === Initialize shell environment =============================================
#set -u                        # Just stop undefined values.
set -e                        # Just stop error.
#set -x                        # Debug running command.

umask 0022
export LC_ALL=C
export LANG=C
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/bin:${PATH+:}${PATH-}"
type command >/dev/null 2>&1 && type getconf >/dev/null 2>&1 &&
export PATH="$(command -p getconf PATH):${PATH}"
export UNIX_STD=2003          # to make HP-UX conform to POSIX

# === Define the functions for printing usage and error message ================
usage_and_exit(){
    cat <<-"    USAGE" 1>&2
    # About

    toXML.sh convert from (like) XPATH to XML.

    # Usage

    toXML.sh [options] [<XPATH file>]

    + [toXPATH.sh](https://gist.github.com/search?q=user%3Atd-shi+filename%3A.sh+toXPATH)
    + [sample.xml](https://www.w3schools.com/xml/schema_example.asp)

    ```
    $> toXPATH.sh sample.xml | toXML.sh
    <?xml version="1.0"?>
    <shiporder orderid="889923" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="shiporder.xsd">
    <item>
    <note>
    Special Edition
    </note>
    <price>
    10.90
    </price>
    <title>
    Empire Burlesque
    </title>
    </item>
    <item>
    <price>
    9.90
    </price>
    <title>
    Hide your heart
    </title>
    </item>
    <orderperson>
    John Smith
    </orderperson>
    <shipto>
    <address>
    Langgt 23
    </address>
    <city>
    4000 Stavanger
    </city>
    <country>
    Norway
    </country>
    <name>
    Ola Nordmann
    </name>
    </shipto>
    </shiporder>
    ```

    # Options

    + -h |--help |--version
      - This help.

    # Version

    2020-02-24T21:14:25 0.02 [Search](https://gist.github.com/search?q=user%3Atd-shi+filename%3A.sh+toXML)

    # LICENSE

    [CC0(Public domain)](https://creativecommons.org/publicdomain/zero/1.0/legalcode)

    # Author

    2020 TD

    USAGE

    exit 1
}

error_exit() {
    ${2+:} false && echo "${0##*/}: $2" 1>&2

    exit "$1"
}

# === Initialize parameters ====================================================
# Detect home directory of this app. and define more
#Homedir="$(d=${0%/*}/; [ "_$d" = "_$0/" ] && d='./'; cd "$d.."; pwd)"
#PATH="$Homedir/<Add Dir>:$PATH" # for additional command

zzz='' # test value.
Workdir="/tmp/toXML${$}"

#. "$Homedir/<shell script config-file.>"        # configration value.

# === Confirm that the required commands exist =================================
# --- cURL or Wget (exsample)
#if   type curl    >/dev/null 2>&1; then
#  CMD_CURL='curl'
#elif type wget    >/dev/null 2>&1; then
#  CMD_WGET='wget'
#else
#  error_exit 1 'No HTTP-GET/POST command found.'
#fi

# === Print usage and exit if one of the help options is set ===================
case "$# ${1:-}" in
    '1 -h'|'1 --help'|'1 --version') usage_and_exit;;
esac

# === Read options =============================================================
while :; do
    case "${1:-}" in
        --zzz=*)
            zzz=$(printf '%s' "${1#--zzz=}" | tr -d '\n')
            echo "${zzz}"
            shift
            ;;
        -zzz)
            zzz=$(printf '%s' "${2:-}" | tr -d '\n')
            echo "${zzz}"
            shift 2
            ;;
        --|-)
            break
            ;;
        --*|-*)
            error_exit 1 'Invalid option'
            ;;
        *)
            break
            ;;
    esac
done

# === Require parameters check =================================================
#printf '%s\n' "${zzz}" | grep -Eq '^$|^-?[0-9.]+,-?[0-9.]+$' || {
#  error_exit 1 'Invalid -l,--location option'
#}

# === Last parameter ===========================================================
case $# in
  0) input=$(cat -)
     ;;
  1) case "${1:-}" in
       '--') usage_and_exit;;
        '-') input=$(cat -)    ;;
          *) input=$1          ;;
     esac
     ;;
  *) case "$1" in '--') shift;; esac
     input="$*"
     ;;
esac                         # Escape 0x0A to 0x1E

# === Define funcitons =========================================================
iterateMove () {
    dir="${1}"
    tag=$(printf "%s" "${1}" | sed 's/#/:/g' | sed 's/\[[0-9]*\]$//')

    cd "${dir}"

    printf "<%s" "${tag}"
    if [ -e "option.txt" ]; then
         cat option.txt
    fi
    printf ">\n"

    if [ -e "body.txt" ]; then
        cat body.txt
    fi

    find ./ -type d                                                           |\
        sed 's:^\./::'                                                        |\
        sed 's:/.*::'                                                         |\
        sort                                                                  |\
        uniq                                                                  |\
        sed '/^$/d'                                                           |\
        while read -r dirname
        do
            iterateMove "${dirname}"
        done

    printf "</%s>\n" "${tag}"
    cd ../
    rm -r "${dir}"
}

# === Main routine =============================================================
mkdir -p "${Workdir}"
cd "${Workdir}"

splitDir=$(printf "%s" "${input}" | sed 's:@: @:' | sed 's:^/::')

printf "%s" "${splitDir}"                                                     |\
    cut -d " " -f 1                                                           |\
    sed 's/:/#/g'                                                             |\
    xargs -I% mkdir -p %

printf "%s" "${splitDir}"                                                     |\
    awk '
    $2~/^[^@]/{
            gsub(":","#",$1)
            c="";
            for (i=2; i<=NF; i++) {
                c=c " "$i;
            }
            printf "%s\n", c >> $1"/body.txt"
    }
    $2~/^@/{
            gsub(":","#",$1)
            sub("^@","",$2);
            c="";
            for (i=3; i<=NF; i++) {
                c=c " "$i;
            }
            sub("^ ","",c);
            printf " %s=\"%s\"", $2, c >> $1"/option.txt"
    }'

printf "%s\n" "<?xml version=\"1.0\"?>"

find ./ -type d                                                               |\
    sed 's:^\./::'                                                            |\
    sed 's:/.*::'                                                             |\
    sort                                                                      |\
    uniq                                                                      |\
    sed '/^$/d'                                                               |\
    while read -r dirname
    do
        iterateMove "${dirname}"
    done                                                                      |\
    sed 's/^ //'

cd /tmp
rm -r "${Workdir}"

# === End shell script =========================================================
exit 0