mirror of
https://github.com/rust-lang/rustlings.git
synced 2024-12-26 23:36:30 +00:00
147 lines
3.7 KiB
Bash
Executable file
147 lines
3.7 KiB
Bash
Executable file
#!/usr/bin/env bash
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echo "Let's get you set up with Rustlings!"
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echo "Checking requirements..."
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if [ -x "$(command -v git)" ]
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then
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echo "SUCCESS: Git is installed"
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else
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echo "ERROR: Git does not seem to be installed."
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echo "Please download Git using your package manager or over https://git-scm.com/!"
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exit 1
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fi
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if [ -x "$(command -v rustc)" ]
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then
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echo "SUCCESS: Rust is installed"
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else
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echo "ERROR: Rust does not seem to be installed."
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echo "Please download Rust using https://rustup.rs!"
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exit 1
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fi
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if [ -x "$(command -v cargo)" ]
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then
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echo "SUCCESS: Cargo is installed"
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else
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echo "ERROR: Cargo does not seem to be installed."
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echo "Please download Rust and Cargo using https://rustup.rs!"
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exit 1
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fi
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# Look up python installations, starting with 3 with a fallback of 2
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if [ -x "$(command -v python3)" ]
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then
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PY="$(command -v python3)"
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elif [ -x "$(command -v python)" ]
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then
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PY="$(command -v python)"
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elif [ -x "$(command -v python2)" ]
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then
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PY="$(command -v python2)"
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else
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echo "ERROR: No working python installation was found"
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echo "Please install python and add it to the PATH variable"
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exit 1
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fi
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# Function that compares two versions strings v1 and v2 given in arguments (e.g 1.31 and 1.33.0).
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# Returns 1 if v1 > v2, 0 if v1 == v2, 2 if v1 < v2.
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function vercomp() {
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if [[ $1 == $2 ]]
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then
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return 0
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fi
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v1=( ${1//./ } )
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v2=( ${2//./ } )
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len1=${#v1[@]}
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len2=${#v2[@]}
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max_len=$len1
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if [[ $max_len -lt $len2 ]]
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then
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max_len=$len2
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fi
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for i in `seq 0 $max_len`
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do
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# Fill empty fields with zeros in v1
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if [ -z "${v1[$i]}" ]
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then
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v1[$i]=0
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fi
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# And in v2
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if [ -z "${v2[$i]}" ]
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then
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v2[$i]=0
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fi
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if [ ${v1[$i]} -gt ${v2[$i]} ]
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then
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return 1
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fi
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if [ ${v1[$i]} -lt ${v2[$i]} ]
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then
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return 2
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fi
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done
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return 0
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}
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RustVersion=$(rustc --version | cut -d " " -f 2)
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MinRustVersion=1.39
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vercomp $RustVersion $MinRustVersion
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if [ $? -eq 2 ]
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then
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echo "ERROR: Rust version is too old: $RustVersion - needs at least $MinRustVersion"
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echo "Please update Rust with 'rustup update'"
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exit 1
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else
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echo "SUCCESS: Rust is up to date"
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fi
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Path=${1:-rustlings/}
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echo "Cloning Rustlings at $Path..."
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git clone -q https://github.com/rust-lang/rustlings $Path
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cd $Path
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Version=$(curl -s https://api.github.com/repos/rust-lang/rustlings/releases/latest | ${PY} -c "import json,sys;obj=json.load(sys.stdin);print(obj['tag_name']);")
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CargoBin="${CARGO_HOME:-$HOME/.cargo}/bin"
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if [[ -z ${Version} ]]
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then
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echo "The latest tag version could not be fetched remotely."
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echo "Using the local git repository..."
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Version=$(ls -tr .git/refs/tags/ | tail -1)
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if [[ -z ${Version} ]]
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then
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echo "No valid tag version found"
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echo "Rustlings will be installed using the main branch"
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Version="main"
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else
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Version="tags/${Version}"
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fi
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else
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Version="tags/${Version}"
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fi
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echo "Checking out version $Version..."
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git checkout -q ${Version}
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echo "Installing the 'rustlings' executable..."
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cargo install --force --path .
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if ! [ -x "$(command -v rustlings)" ]
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then
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echo "WARNING: Please check that you have '$CargoBin' in your PATH environment variable!"
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fi
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# Checking whether Clippy is installed.
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# Due to a bug in Cargo, this must be done with Rustup: https://github.com/rust-lang/rustup/issues/1514
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Clippy=$(rustup component list | grep "clippy" | grep "installed")
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if [ -z "$Clippy" ]
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then
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echo "Installing the 'cargo-clippy' executable..."
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rustup component add clippy
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fi
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echo "All done! Run 'rustlings' to get started."
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