mimedecode

Berkely的学生写的

#!/bin/sh
# decode mime messages
# $Id: mimedecode,v 1.1 1998/09/04 01:05:51 sveerara Exp $

USAGE="Usage: mimedecode [-v] [-s src dir] [-d dest dir] [-f] [file]"
    
# check if an arg is given

: ${1:?"$USAGE"} ;

# check if metamail exits

type metamail > /dev/null 2>&1 ;
if [ $? -ne 0 ] ; then
    echo "ERROR: mimedecode requires metamail."
    exit 1
fi

# initalize the variables to default values

_MAILD="$HOME/Mail"
_VERBSE=false;
_SRCDIR="$_MAILD/inbox"
    
# scan the options
# -f -> input file
# -s -> source dir
# -d -> dest dir
# -v -> verbose

while getopts f:s:d:v OPTION ; do
    case "$OPTION" in
	f) _INFILE="$OPTARG" ;;
	s) _SRCDIR="$OPTARG" ;;
	d) _DESDIR="$OPTARG" ;;
	v) _VERBSE="true" ;;
       \?) echo "$USAGE" ; exit 1 ;;
    esac
done

# check the source dir

if [ ! -d "$_SRCDIR" ] ; then
    echo "ERROR: Source directory, $_SRCDIR does nto exsist."
    exit 1
fi

shift `echo "$OPTIND - 1" | bc`

# check the input file and destination dir

: ${_INFILE:=${1:?"Input file not specified."}} \
  ${_DESDIR:=mdout-${_INFILE}} ;

# if the destintation dir doesn't exits make it
 
if [ ! -d "$_DESDIR" ] ; then
    mkdir "$_DESDIR";
    if [ $? -ne 0 ] ; then
	echo "ERROR: Could not make directory for decoding."
	exit 1
    fi
fi


METAMAIL_TMPDIR="$_DESDIR" ; export METAMAIL_TMPDIR ; 
_MM="metamail -x -y -w ${_SRCDIR}/${_INFILE}"
if [ "$VERBSE" = "true" ] ; then 
    echo $_MM ; $_MM ; /bin/ls -l $_DESDIR ; 
else
    echo $_MM ; $_MM > /dev/null 2>&1
fi

unset USAGE _INFILE _SRCDIR _DESDIR _VERBSE OPTION OPTARG OPTIND

exit 0