backend/git-hooks/format.sh

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#!/bin/sh -e
jar_version=1.6
jar_dir="$HOME/.local/share/java"
jar_file="$jar_dir/google-java-format-$jar_version-all-deps.jar"
java_cmd="java"
# download jar file if missing
if [ ! -f "$jar_file" ]; then
mkdir -p "$jar_dir"
wget -O "$jar_file" https://github.com/google/google-java-format/releases/download/google-java-format-$jar_version/google-java-format-$jar_version-all-deps.jar
fi
# execute formatter
$java_cmd -jar "$jar_file" $@