# ...
# download: fake mode to download the result without changes
+# Manual:
+# When asked for a number (non-dialog uses only), you can also
+# enter 'n' or 'p' to get the next or previous item (+1 or -1)
+
# ENV variables:
# USE_DIALOG: force the usage of the command 'dialog'
# : true if dialog is found
# 0 : do not invert (default)
# 1 : invert
+# EXIT Codes:
+# 0: ok
+# 1: syntax error
+# 2: cannot contact server
+# 3: unknown selector mode
+# 255: special exit more 'q'
+
SERVER="$1"
SELECTOR="$2"
PORT="$3"
MODE="$4"
+PREFIX="[0-9hIg+]"
+
# Defaults:
[ "$PORT" = "" ] && PORT=70
if [ "$MODE" = "" ]; then
# "" or dir-like selector? -> 1 ; if not -> 0
echo "$SELECTOR" | grep "/$" >/dev/null && MODE=1 || MODE=0
[ "$SELECTOR" = "" ] && MODE=1
+
+ # check explicit modes:
+ if echo "$SELECTOR" | grep "^/\($PREFIX\|download\)/" >/dev/null; then
+ MODE="`echo "$SELECTOR" | cut -f2 -d/`"
+ SELECTOR="`echo "$SELECTOR" | sed 's:^/[^/]*/::'`"
+ fi
fi
if [ "$SERVER" = "" ]; then
echo "Syntax error: $0 [SERVER] ([SELECTOR]) ([PORT]) ([MODE])" >&2
- exit 2
+ exit 1
fi
# can be "-" for no escape sequences
INVERT=
fi
-PREFIX="[0-9hIg+]"
-
# $0 [FILE] (dialog)
# Display a gopher menu for the given resource
cat_menu() {
}
trap finish EXIT
+echo "$SELECTOR" | nc "$SERVER" "$PORT" > "$tmp"
+if [ $? != 0 ]; then
+ echo Cannot contact gopher server "[$SERVER]" >&2
+ exit 2
+fi
+
if [ $MODE = 1 ]; then
- echo "$SELECTOR" | nc "$SERVER" "$PORT" | sed 's:\r::g' > "$tmp"
-else
- echo "$SELECTOR" | nc "$SERVER" "$PORT" > "$tmp"
+ sed --in-place 's:\r::g' "$tmp"
fi
# Process page content
cat "$tmp" | less
;;
1|+)
- CHOICE=start
+ CHOICE=0
while [ "$CHOICE" != "" ]; do
if [ "$USE_DIALOG" = 1 ]; then
> "$tmp.menu"
rm "$tmp.choice"
else
cat_menu "$tmp" | less
- read -p "[$SELECTOR]: " CHOICE
+ read -p "[$SELECTOR]: " NEW_CHOICE
+ if [ "$NEW_CHOICE" = p ]; then
+ CHOICE=`expr "$CHOICE" - 1 2>/dev/null`
+ if [ "$CHOICE" -lt 0 ]; then
+ CHOICE=`cat "$tmp" | grep "^$PREFIX" | wc --lines`
+ fi
+ elif [ "$NEW_CHOICE" = n ]; then
+ CHOICE=`expr "$CHOICE" + 1 2>/dev/null`
+ else
+ CHOICE="$NEW_CHOICE"
+ fi
fi
[ "$CHOICE" = q ] && exit 255 # force-quit