dsn.sh

#!/bin/bash

function uri_parser() {
  # uri capture
  uri="$@"

  # safe escaping
  uri="${uri//\`/%60}"
  uri="${uri//\"/%22}"

  # top level parsing
  pattern='^(([a-z]{3,5})://)?((([^:\/]+)(:([^@\/]*))?@)?([^:\/?]+)(:([0-9]+))?)(\/[^?]*)?(\?[^#]*)?(#.*)?$'
  [[ "$uri" =~ $pattern ]] || return 1;

  # component extraction
  uri=${BASH_REMATCH[0]}
  uri_schema=${BASH_REMATCH[2]}
  uri_address=${BASH_REMATCH[3]}
  uri_user=${BASH_REMATCH[5]}
  uri_password=${BASH_REMATCH[7]}
  uri_host=${BASH_REMATCH[8]}
  uri_port=${BASH_REMATCH[10]}
  uri_path=${BASH_REMATCH[11]}
  uri_query=${BASH_REMATCH[12]}
  uri_fragment=${BASH_REMATCH[13]}

  # path parsing
  count=0
  path="$uri_path"
  pattern='^/+([^/]+)'
  while [[ $path =~ $pattern ]]; do
    eval "uri_parts[$count]=\"${BASH_REMATCH[1]}\""
    path="${path:${#BASH_REMATCH[0]}}"
    let count++
  done

  # query parsing
  count=0
  query="$uri_query"
  pattern='^[?&]+([^= ]+)(=([^&]*))?'
  while [[ $query =~ $pattern ]]; do
    eval "uri_args[$count]=\"${BASH_REMATCH[1]}\""
    eval "uri_arg_${BASH_REMATCH[1]}=\"${BASH_REMATCH[3]}\""
    query="${query:${#BASH_REMATCH[0]}}"
    let count++
  done

  # return success
  return 0
}

uri_parser "$1"

echo DB_HOST=$uri_host
echo DB_PORT=$uri_port
echo DB_DATABASE=$uri_path
echo DB_USERNAME=$uri_user
echo DB_PASSWORD=$uri_password