mojihame

#! /bin/sh

# designed by Nobuaki Tounaka
# written by 321516

# print the usage and exit
print_usage_and_exit () {
  cat <<-__USAGE 1>&2
		Usage   : ${0##*/} [-d[<string>]] <template> <data>
		        : ${0##*/} -l<label> [-d[<string>]] <template> <data>
		        : ${0##*/} -h<label> [-d[<string>]] <template> <data>
		Version : Fri Apr 11 15:52:47 JST 2014
		        : Open usp Tukubai (POSIX.1 Bourne Shell/POSIX.1 commands)
__USAGE
  exit 1
}

# Initialize
PATH='/usr/bin:/bin'

# parse the arguments
mode='p' # "p" (default) or "r" or "l" or "h"
label=''
asnull='@'
file_tmpl=''
file_data=''
optmode=''
i=0
for arg in "$@"; do
  i=$((i+1))
  if [ $i -eq $# ]; then
    [ -z "$optmode" ] || print_usage_and_exit
    if [ -n "$file_tmpl" ]; then
      file_data=$arg
    else
      file_tmpl=$arg
    fi
    break
  fi
  if [ -z "$optmode" ]; then
    if   [ "_$arg" =  '_-r'        ]; then
      mode='r'
      label=''
    elif [ "_$arg" != "_${arg#-l}" ]; then
      mode='l'
      label=${arg#-l}
      [ -z "$label" ] && optmode='l'
    elif [ "_$arg" != "_${arg#-h}" ]; then
      mode='h'
      label=${arg#-h}
      [ -z "$label" ] && optmode='h'
    elif [ "_$arg" != "_${arg#-d}" ]; then
      asnull=${arg#-d}
    elif [ $i -eq $(($#-1)) ]; then
      file_tmpl=$arg; continue;
    else
      print_usage_and_exit
    fi
  elif [ \( "$optmode" = 'l' \) -o \( "$optmode" = 'h' \) ]; then
    label=$arg
    optmode=''
  else
    print_usage_and_exit
  fi
done

# validate the arguments
[ \( "$mode" = 'l' \) -a \( -z "$label" \) ] && print_usage_and_exit
[ \( "$mode" = 'h' \) -a \( -z "$label" \) ] && print_usage_and_exit
[ -n "$file_tmpl"                          ] || print_usage_and_exit
[ -n "$file_data"                          ] || file_data='-'
use_stdin=0
for file in "$file_tmpl" "$file_data"; do
  if [ \( "_$file" = '_-'               \) -o \
       \( "_$file" = '_/dev/stdin'      \) -o \
       \( "_$file" = '_/dev/fd/0'       \) -o \
       \( "_$file" = '_/proc/self/fd/0' \)    ]
  then
    use_stdin=$((use_stdin+1))
  fi
done
[ $use_stdin -le 1 ] || print_usage_and_exit
if [ \( ! -r "$file_tmpl" \) -a \( "_$file_tmpl" != '_-' \) ]; then
  echo "${0##*/}: Cannot open the template file" 1>&2
  exit 1
fi
if [ \( ! -r "$file_data" \) -a \( "_$file_data" != '_-' \) ]; then
  echo "${0##*/}: Cannot open the data file" 1>&2
  exit 1
fi

# main
case $mode in
  p) exec "${0}-p" "-d$asnull" "$file_tmpl" "$file_data";;
  r) exec "${0}-l" "-d$asnull" "$file_tmpl" "$file_data";;
  l) exec "${0}-l" "-l$label" "-d$asnull" "$file_tmpl" "$file_data";;
  h) exec "${0}-h" "-h$label" "-d$asnull" "$file_tmpl" "$file_data";;
esac