blob: 64d9b16dcd7009278d66a3788ce16b5a704c7423 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
#!/bin/sh
PROMPT='=='
SHOW='show'
cleanup () {
rm -f "$TMPFILE";
}
go () {
printf '%s\r\n' "$1" | nc "$2" "$3"
}
usage() {
printf '%s\n' \
'usage:' \
' visit a Gopher URL:' \
" $0 <URL>" \
' init links:' \
" $0 -i" \
' show this help:' \
" $0 -h" \
'' \
'In a gopher page, just type:' \
" !./g % LINE" \
'to visit the resource at LINE, or:' \
" !./d % LINE" \
'to download the resource at LINE\n'\
" !./v URL" \
'to visit a Gopher URL'
exit 0
}
goto_url(){
URL="$(echo $1 | sed 's,gopher://,,g')"
hostport=$(echo "$URL" | cut -d "/" -f 1)
host="$(echo $hostport | cut -d ":" -f 1)"
port="$(echo $hostport | cut -s -d ":" -f 2)"
[ -z "$port" ] && port='70'
type=$(echo "$URL" | cut -s -d "/" -f 2)
[ -z "$type" ] && {
type='1'
sel="/"
go $sel $host $port
return
}
[ -n "${type#?}" ] && echo "Invalid Gopher URL" >&2 && exit 1
## Check if type is a valid one
type="$(echo $type | sed -n '/^[0-9ITghis+]$/p')"
[ -z "${type}" ] && echo "Invalid Gopher URL" >&2 && exit 1
sel=/$(echo "$URL" | cut -s -d "/" -f 3-)
go $sel $host $port
}
trap cleanup INT QUIT HUP KILL ABRT TERM
[ "$#" -lt 1 ] || [ "$1" = "-h" ] && usage
script_name="$(basename "$0")"
if [ "${script_name}" = "gophed" ] && [ "$1" = "-i" ]; then
ln -sf "$0" g
ln -sf "$0" d
ln -sf "$0" v
exit 0
fi
if [ "$script_name" = "gophed" ] || [ "$script_name" = "v" ]; then
sel="$(printf '%s' "$1" | sed -r 's:/:+:g')"
TMPFILE="$(mktemp "/tmp/gophed_${2}_${sel}_$3.XXXXXXXXXXXXXXXXXXX")"
goto_url "$1" > "$TMPFILE"
while read line; do echo $line; done | ed -p "$PROMPT" "$TMPFILE"
cleanup
exit 0
fi
if [ "$script_name" = "g" ] || [ "$script_name" = "d" ]; then
LINE=$(awk "{if (NR == $2) print \$0;}" $1)
RESOURCE="$(printf '%s' "$LINE" | cut -d ' ' -f 2)"
HOST="$(printf '%s' "$LINE" | cut -d ' ' -f 3)"
PORT="$(printf '%s' "$LINE" | awk -F ' ' '{ match($4,/[[:digit:]]+/); print substr($4,RSTART,RLENGTH) }')"
if [ "$script_name" = "g" ]; then
SEL="$(printf '%s' "$RESOURCE" | sed -r 's:/:+:g')"
TMPFILE="$(mktemp "/tmp/gophed_${HOST}_${SEL}_$PORT.XXXXXXXXXXXXXXXXXXX")"
go "$RESOURCE" "$HOST" "$PORT" > "$TMPFILE"
while read line; do echo $line; done | ed -p "$PROMPT" "$TMPFILE"
fi
if [ "$script_name" = "d" ]; then
DIR_RESOURCE="$(dirname "$RESOURCE")"
printf 'Download %s in %s\n' "$RESOURCE" "$HOST$RESOURCE"
mkdir -p "$HOST/$DIR_RESOURCE"
go "$RESOURCE" "$HOST" "$PORT" > "$HOST$RESOURCE"
fi
cleanup
exit 0
fi
printf '%s: command not found\n' "$scriptname"
cleanup
exit 1
|