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#!/bin/bash
#
# FGET -- Download a URL.
#
# Usage: fget [-h] [-n] [-q | -v] url
#
# Where -n no-op flag
# -q suppress output
# -v verbose output
# -d set download directory
# -o set output filename
# -h this message
#
# Example:
# % fget -q ftp://iraf.noao.edu/iraf/extern/foo-linux.tar.gz
#
# ----------------------------------------------------------------------------
export PATH=../util:/sbin:/usr/sbin:/bin:/usr/bin:$PATH:/usr/local/bin:/opt/local/bin:/local/bin
##############################################################################
# START OF MACHDEP DEFINITIONS.
##############################################################################
# MACHDEP definitions which may be reset below.
# Find the iraf root directory.
if [ -n "$iraf" ]; then
iraf=""
files=("~/.iraf.h" "~/.iraf/iraf.h" "/usr/include/iraf.h")
for f in ${files[@]}; do
# $iraf is defined, use a well-known path for the system
if [ -e $f ]; then
i=`egrep IRAF $f | egrep \#define | sed -e 's/"//g' | awk '{print $3}'`
iraf=${i}
break
fi
done
fi
# Initialize the $iraf and environment.
if [ -z "$iraf" ]; then
if [ -e "$HOME/.iraf/setup.sh" ]; then
source $HOME/.iraf/setup.sh
else
source ../unix/hlib/setup.sh
fi
else
source $iraf/unix/hlib/setup.sh
fi
# Determine platform architecture.
arch=`$iraf/unix/hlib/irafarch.sh`
##############################################################################
# END OF MACHDEP DEFINITIONS.
##############################################################################
#=============================================================================
# Declarations and initializations.
#=============================================================================
exec=yes
verb=no
url=""
fname=""
ddir=""
# Process cmdline flags.
while [ -n "$1" ] ; do
case "$1" in
"-n") # no execute
exec=no
;;
"-q") # be quiet
verb=no
quiet=yes
;;
"-v") # be chatty
verb=yes
quiet=no
;;
"-h") # print help summary
_Usage
;;
"-d") # set download directory
ddir=$2
shift
;;
"-o") # set output file name
fname=$2
shift
;;
*)
url=$1
;;
esac
if [ "$2" == "" ]; then
break
else
shift
fi
done
# Error checks.
if [ -z "$url" ]; then
if [ "$verb" == "yes" ]; then
/bin/echo "ERROR: URL not specified"
fi
exit 1
fi
# Get the download filename. Delete an existing copy of the file
if [ -z $fname ]; then
fname=${url##*/}
fi
if [ -e "$fname" ]; then
/bin/rm -f $fname
fi
# Ensure URL is an HTTP protocol.
prot=`echo $url | cut -c1-3`
if [ "$prot" == "ftp" ]; then
u=`echo $url | sed -e 's;ftp://iraf.noao.edu/iraf;http://iraf.noao.edu/ftp;'`
url=$u
fi
# Do it.
if [ "$exec" == "yes" ]; then
if [ "$verb" == "yes" ]; then
/bin/echo "Downloading "$url" ...."
fi
args="url='$url' fname='${ddir}${fname}' cache='/tmp' verbose=no extn='' use_cache=no"
if [ "$verb" == "no" ]; then
$iraf/bin.$arch/x_system.e urlget ${args} \$nargs=2 >> /dev/null 2>&1
else
$iraf/bin.$arch/x_system.e urlget ${args} \$nargs=2
fi
if [ "$verb" == "yes" ]; then
/bin/echo "done"
fi
fi
# Verify we have the file.
if [ ! -e ${url##*/} ]; then
if [ "$verb" == "yes" ]; then
/bin/echo "Error downloading file '"$fname"'"
fi
exit 1
else
if (( $#>1 )); then
mv ${url##*/} $2
fi
fi
# Normal exit.
exit 0
#=============================================================================
# Usage
#=============================================================================
_Usage() {
/bin/echo "Usage: fget [-h] [-n] [-q | -v] url"
/bin/echo ""
/bin/echo " where -n # no execute"
/bin/echo " -q # suppress output"
/bin/echo " -v # verbose output"
/bin/echo " -h # this message"
exit 0
}
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