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#!/bin/sh
PROMPT="=="
SHOW="show"
cleanup () {
rm -f $TMPFILE;
}
go () {
printf "${1}\r\n" | nc $2 $3
}
usage() {
printf "usage: \n"
printf " visit a resource:\n"
printf " $0 <path> <server> <port>\n"
printf " init links:\n"
printf " $0 -i \n"
printf " show this help:\n"
printf " $0 -h\n"
printf "\n"
printf "In a gopher page, just type:\n"
printf " !./g %% LINE\n"
printf "to visit the resource at LINE, or:\n"
printf " !./d %% LINE\n"
printf "to download the resource at LINE\n\n"
exit 0
}
trap cleanup INT QUIT HUP KILL ABRT TERM
if [ $# -lt 1 ]; then
usage
fi
if [ "$1" = "-h" ]; then usage; fi
if [ "$1" = "-i" ]; then
ln -s $0 g
ln -s $0 d
ln -s $0 v
exit 0
fi
script_name=$(basename $0)
if [ "${script_name}" = "gophed" -o "${script_name}" = "v" ]; then
sel=$(echo $1 | sed -r 's:/:+:g')
TMPFILE=$(mktemp /tmp/gophed_$2_${sel}_$3.XXXXXXXXXXXXXXXXXXX)
go "$1" "$2" "$3" > $TMPFILE
cat $SHOW - | ed -p ${PROMPT} $TMPFILE
fi
if [ "${script_name}" = "g" ]; then
LINE=$(awk "{if (NR == $2) print \$0;}" $1)
RESOURCE=$(echo "$LINE" | cut -d ' ' -f 2)
HOST=$(echo "$LINE" | cut -d ' ' -f 3)
PORT=$(echo "$LINE" | awk -F ' ' '{ match($4,/[[:digit:]]+/); print substr($4,RSTART,RLENGTH) }')
SEL=$(echo $RESOURCE | sed -r 's:/:+:g')
TMPFILE=$(mktemp /tmp/gophed_${HOST}_${SEL}_${PORT}.XXXXXXXXXXXXXXXXXXX)
go "$RESOURCE" "$HOST" "$PORT" > $TMPFILE
cat $SHOW - | ed -p ${PROMPT} $TMPFILE
fi
if [ "${script_name}" = "d" ]; then
LINE=$(awk "{if (NR == $2) print \$0;}" $1)
RESOURCE=$(echo "$LINE" | cut -d ' ' -f 2)
HOST=$(echo "$LINE" | cut -d ' ' -f 3)
PORT=$(echo "$LINE" | awk -F ' ' '{ match($4,/[[:digit:]]+/); print substr($4,RSTART,RLENGTH) }')
DIR_RESOURCE=$(dirname $RESOURCE)
echo "Download $RESOURCE in ${HOST}${RESOURCE}"
mkdir -p "$HOST/$DIR_RESOURCE"
go "$RESOURCE" "$HOST" "$PORT" > "${HOST}${RESOURCE}"
fi
cleanup
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