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Return an #error macro if the wrong number of arguments are supplied

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This commit is contained in:
Tobias Bergkvist 2021-10-01 18:51:09 +02:00
parent ac99a6ff98
commit d930fecc3c
1 changed files with 10 additions and 2 deletions
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12
pkgs/build-support/setup-hooks/make-binary-wrapper.sh
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@ -36,26 +36,30 @@ makeDocumentedCWrapper() {
# makeCWrapper EXECUTABLE ARGS
# ARGS: same as makeBinaryWrapper
makeCWrapper() {
local argv0 n params cmd main flagsBefore flags executable params
local argv0 n params cmd main flagsBefore flags executable params length
executable=$(escapeStringLiteral "$1")
params=("$@")
for ((n = 1; n < ${#params[*]}; n += 1)); do
length=${#params[*]}
for ((n = 1; n < length; n += 1)); do
p="${params[n]}"
case $p in
--set)
cmd=$(setEnv "${params[n + 1]}" "${params[n + 2]}")
main="$main $cmd"$'\n'
n=$((n + 2))
[ $n -ge "$length" ] && printf '%s\n' " #error makeBinaryWrapper: $p takes 2 arguments"
;;
--set-default)
cmd=$(setDefaultEnv "${params[n + 1]}" "${params[n + 2]}")
main="$main $cmd"$'\n'
n=$((n + 2))
[ $n -ge "$length" ] && printf '%s\n' " #error makeBinaryWrapper: $p takes 2 arguments"
;;
--unset)
cmd=$(unsetEnv "${params[n + 1]}")
main="$main $cmd"$'\n'
n=$((n + 1))
[ $n -ge "$length" ] && printf '%s\n' " #error makeBinaryWrapper: $p takes 1 argument"
;;
--prefix)
cmd=$(setEnvPrefix "${params[n + 1]}" "${params[n + 2]}" "${params[n + 3]}")
@ -63,6 +67,7 @@ makeCWrapper() {
uses_prefix=1
uses_concat3=1
n=$((n + 3))
[ $n -ge "$length" ] && printf '%s\n' " #error makeBinaryWrapper: $p takes 3 arguments"
;;
--suffix)
cmd=$(setEnvSuffix "${params[n + 1]}" "${params[n + 2]}" "${params[n + 3]}")
@ -70,15 +75,18 @@ makeCWrapper() {
uses_suffix=1
uses_concat3=1
n=$((n + 3))
[ $n -ge "$length" ] && printf '%s\n' " #error makeBinaryWrapper: $p takes 3 arguments"
;;
--add-flags)
flags="${params[n + 1]}"
flagsBefore="$flagsBefore $flags"
n=$((n + 1))
[ $n -ge "$length" ] && printf '%s\n' " #error makeBinaryWrapper: $p takes 1 argument"
;;
--argv0)
argv0=$(escapeStringLiteral "${params[n + 1]}")
n=$((n + 1))
[ $n -ge "$length" ] && printf '%s\n' " #error makeBinaryWrapper: $p takes 1 argument"
;;
*) # Using an error macro, we will make sure the compiler gives an understandable error message
printf '%s\n' " #error makeCWrapper did not understand argument ${p}"