#!/bin/bash

# define parseline() in the sourcing script

linefeeder() {
  for arg in "$@"; do
    case "$1" in 
      -)
        # treat - as input stream
        break;;
      -*)
        # Ignore options for now
        shift;;
    esac
  done

  local file= 
  local line=
  local args=("$@")

  # Use standard input if no files are present
  [ $# -eq 0 ] && args[0]="/dev/stdin"
  
  for file in "${args[@]}"; do
    [ "$file" == "-" ] && file="/dev/stdin"
    while IFS='' read -r line; do 
      parseline "$line"
    done <"${file}"
    # If last line in a file has no newline, read ends but still populates $line
    [[ $line ]] && parseline "$line"
  done
}