Verify that rust version is recent enough to install rustlings.

I would have liked to write some tests for the vercomp function I
introduce, but there doesn't seem to be any CI setup yet?
This commit is contained in:
Colin Pitrat 2019-03-20 11:18:39 +00:00
parent bf8d927ab2
commit fd4eda8bda
1 changed files with 52 additions and 0 deletions

View File

@ -30,6 +30,58 @@ else
echo "SUCCESS: Cargo is installed"
fi
# Function that compares two versions strings v1 and v2 given in arguments (e.g 1.31 and 1.33.0).
# Returns 1 if v1 > v2, 0 if v1 == v2, 2 if v1 < v2.
function vercomp() {
if [[ $1 == $2 ]]
then
return 0
fi
v1=( ${1//./ } )
v2=( ${2//./ } )
len1=${#v1[@]}
len2=${#v2[@]}
max_len=$len1
if [[ $max_len -lt $len2 ]]
then
max_len=$len2
fi
for i in `seq 0 $max_len`
do
# Fill empty fields with zeros in v1
if [ -z "${v1[$i]}" ]
then
v1[$i]=0
fi
if [ -z "${v2[$i]}" ]
then
v2[$i]=0
fi
# And in v2
if [ ${v1[$i]} -gt ${v2[$i]} ]
then
return 1
fi
if [ ${v1[$i]} -lt ${v2[$i]} ]
then
return 2
fi
done
return 0
}
RustVersion=$(rustc --version | cut -d " " -f 2)
MinRustVersion=1.31
vercomp $RustVersion $MinRustVersion
if [ $? -eq 2 ]
then
echo "WARNING: Rust version is too old: $RustVersion - needs at least $MinRustVersion"
echo "Please update Rust with 'rustup update'"
exit 1
else
echo "SUCCESS: Rust is up to date"
fi
Path=${1:-rustlings/}
echo "Cloning Rustlings at $Path..."
git clone -q https://github.com/rust-lang/rustlings $Path