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Added check for 'time --format' and such, which Bash swallows.

This commit is contained in:
Vidar Holen 2013-05-23 22:28:12 -07:00
parent e8a0fe09bf
commit cf67bf2294
1 changed files with 28 additions and 8 deletions
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36
ShellCheck/Analytics.hs
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@ -84,6 +84,7 @@ basicChecks = [
,checkTrapQuotes
,checkTestRedirects
,checkIndirectExpansion
,checkTimeParameters
]
treeChecks = [
checkUnquotedExpansions
@ -730,6 +731,12 @@ checkCommand str f (T_SimpleCommand id _ cmd) =
_ -> return ()
checkCommand _ _ _ = return ()
checkUnqualifiedCommand str f (T_SimpleCommand id _ cmd) =
case cmd of
(w:rest) -> if w `isUnqualifiedCommand` str then f rest else return ()
_ -> return ()
checkUnqualifiedCommand _ _ _ = return ()
getLiteralString t = g t
where
allInList l = let foo = map g l in if all isJust foo then return $ concat (catMaybes foo) else Nothing
@ -742,19 +749,22 @@ getLiteralString t = g t
isLiteral t = isJust $ getLiteralString t
isCommand (T_Redirecting _ _ w) str =
isCommand w str
isCommand (T_SimpleCommand _ _ (w:_)) str =
isCommand w str
isCommand token str =
isCommand token str = isCommandMatch token (\cmd -> cmd == str || ("/" ++ str) `isSuffixOf` cmd)
isUnqualifiedCommand token str = isCommandMatch token (\cmd -> cmd == str)
isCommandMatch (T_Redirecting _ _ w) matcher =
isCommandMatch w matcher
isCommandMatch (T_SimpleCommand _ _ (w:_)) matcher =
isCommandMatch w matcher
isCommandMatch token matcher =
case getLiteralString token of
Just cmd -> cmd == str || ("/" ++ str) `isSuffixOf` cmd
Just cmd -> matcher cmd
Nothing -> False
prop_checkPrintfVar1 = verify checkPrintfVar "printf \"Lol: $s\""
prop_checkPrintfVar2 = verifyNot checkPrintfVar "printf 'Lol: $s'"
prop_checkPrintfVar3 = verify checkPrintfVar "printf -v cow $(cmd)"
checkPrintfVar = checkCommand "printf" f where
checkPrintfVar = checkUnqualifiedCommand "printf" f where
f (dashv:var:rest) | getLiteralString dashv == (Just "-v") = f rest
f (format:params) = check format
f _ = return ()
@ -766,7 +776,7 @@ checkPrintfVar = checkCommand "printf" f where
prop_checkUuoe1 = verify checkUuoe "echo $(date)"
prop_checkUuoe2 = verify checkUuoe "echo \"$(date)\""
prop_checkUuoe3 = verifyNot checkUuoe "echo \"The time is $(date)\""
checkUuoe = checkCommand "echo" f where
checkUuoe = checkUnqualifiedCommand "echo" f where
msg id = style id "Useless echo? Instead of 'echo $(cmd)', just use 'cmd'."
f [T_NormalWord id [(T_DollarExpansion _ _)]] = msg id
f [T_NormalWord id [T_DoubleQuoted _ [(T_DollarExpansion _ _)]]] = msg id
@ -864,6 +874,16 @@ checkTrapQuotes = checkCommand "trap" f where
checkExpansions (T_DollarArithmetic id _) = warning id
checkExpansions _ = return ()
prop_checkTimeParameters1 = verify checkTimeParameters "time -f lol sleep 10"
prop_checkTimeParameters2 = verifyNot checkTimeParameters "time sleep 10"
prop_checkTimeParameters3 = verifyNot checkTimeParameters "time -p foo"
checkTimeParameters = checkUnqualifiedCommand "time" f where -- TODO make bash specific
f (x:_) = let s = concat $ deadSimple x in
if "-" `isPrefixOf` s && s /= "-p" then
info (getId x) "Bash overrides 'time' as seen in man time(1). Use 'command time ..' for that one."
else return ()
f _ = return ()
prop_checkTestRedirects1 = verify checkTestRedirects "test 3 > 1"
prop_checkTestRedirects2 = verifyNot checkTestRedirects "test 3 \\> 1"
prop_checkTestRedirects3 = verify checkTestRedirects "/usr/bin/test $var > $foo"