ci: Make CI use same checks as pre-commit hook

.gitlab-ci.yml

@@ -32,15 +32,13 @@ flatpak:
       - 'logs'
     expire_in: 14 days
 
-# Configure and run rustfmt
-# Exits and builds fails if on bad format
-rustfmt:
+# Configure and run code checks
+# Exits and fails if an error is encountered
+checks:
   image: "rust:slim"
+  stage: check
   script:
-    - rustup component add rustfmt
-    - rustc -Vv && cargo -Vv
-    - cargo fmt --version
-    - cargo fmt --all -- --color=always --check
+    - scripts/checks.sh --verbose --force-install
 
 cargo-clippy:
   image: 'registry.gitlab.gnome.org/gnome/gnome-runtime-images/rust_bundle:master'

scripts/checks.sh

@@ -1,6 +1,47 @@
-#!/bin/sh
+#!/bin/bash
 # Source: https://gitlab.gnome.org/GNOME/fractal/blob/master/hooks/pre-commit.hook
 
+# Usage info
+show_help() {
+cat << EOF
+Run conformity checks on the current Rust project.
+
+If a dependency is not found, helps the user to install it.
+
+USAGE: ${0##*/} [OPTIONS]
+
+OPTIONS:
+    -f, --force-install     Install missing dependencies without asking
+    -v, --verbose           Use verbose output
+    -h, --help              Display this help and exit
+
+ERROR CODES:
+    1                       Check failed
+    2                       Missing dependency
+EOF
+}
+
+# Initialize variables
+verbose=0
+force_install=0
+
+# Check arguments
+while [[ "$1" ]]; do case $1 in
+    -f | --force-install )
+        force_install=1
+        ;;
+    -v | --verbose )
+        verbose=1
+        ;;
+    -h | --help )
+        show_help
+        exit 0
+        ;;
+    *)
+        show_help >&2
+        exit 1
+esac; shift; done
+
 install_rustfmt() {
     if ! which rustup &> /dev/null; then
         curl https://sh.rustup.rs -sSf  | sh -s -- -y
@@ -11,25 +52,22 @@ install_rustfmt() {
         fi
     fi
 
-    if ! rustup component list|grep rustfmt &> /dev/null; then
     echo "Installing rustfmt…"
     rustup component add rustfmt
-    fi
 }
 
 if ! which cargo >/dev/null 2>&1 || ! cargo fmt --help >/dev/null 2>&1; then
     echo "Unable to check Fractal’s code style, because rustfmt could not be run."
 
-    if [ ! -t 1 ]; then
+    if [[ $force_install -eq 1 ]]; then
+        install_rustfmt
+    elif [ ! -t 1 ]; then
         # No input is possible
-        echo "Performing commit."
-        exit 0
-    fi
-
+        exit 2
+    else
         echo ""
         echo "y: Install rustfmt via rustup"
         echo "N: Don't install rustfmt"
-
         echo ""
         while true
         do
@@ -40,11 +78,16 @@ if ! which cargo >/dev/null 2>&1 || ! cargo fmt --help >/dev/null 2>&1; then
                 * ) echo "Invalid input";;
             esac
         done
+    fi
+fi
 
+if [[ $verbose -eq 1 ]]; then
+    rustc -Vv && cargo -Vv
+    cargo fmt --version
 fi
 
 echo "--Checking style--"
-cargo fmt --all -- --check
+cargo fmt --all -- --color=always --check
 if test $? != 0; then
     echo "--Checking style fail--"
     echo "Please fix the above issues, either manually or by running: cargo fmt --all"