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gopher.sh: error message when server KO
author
Niki Roo
<niki@nikiroo.be>
Sun, 15 Apr 2018 02:55:33 +0000
(
04:55
+0200)
committer
Niki Roo
<niki@nikiroo.be>
Sun, 15 Apr 2018 02:55:33 +0000
(
04:55
+0200)
gopher.sh
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diff --git
a/gopher.sh
b/gopher.sh
index 0ec852b0cf9f1dbe15def858d60f295ac1f756a7..a6cc44d7058aa659fe0fbeec1eb73a259c933333 100755
(executable)
--- a/
gopher.sh
+++ b/
gopher.sh
@@
-24,6
+24,13
@@
# 0 : do not invert (default)
# 1 : invert
# 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"
SERVER="$1"
SELECTOR="$2"
PORT="$3"
@@
-47,7
+54,7
@@
fi
if [ "$SERVER" = "" ]; then
echo "Syntax error: $0 [SERVER] ([SELECTOR]) ([PORT]) ([MODE])" >&2
if [ "$SERVER" = "" ]; then
echo "Syntax error: $0 [SERVER] ([SELECTOR]) ([PORT]) ([MODE])" >&2
- exit
2
+ exit
1
fi
# can be "-" for no escape sequences
fi
# can be "-" for no escape sequences
@@
-132,10
+139,14
@@
finish() {
}
trap finish EXIT
}
trap finish EXIT
+echo "$SELECTOR" | nc "$SERVER" "$PORT" > "$tmp"
+if [ $? != 0 ]; then
+ echo Cannot contact gopher server "[$SERVER]" >&2
+ exit 2
+fi
+
if [ $MODE = 1 ]; then
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
fi
# Process page content