pre-commit

#!/bin/bash

function fail() {
  echo "$@"
  exit 1
}

tmpfile=/tmp/.textarprecommit

if test "$1" = install; then
  ln -rs pre-commit .git/hooks/ || fail "error: pre-commit install failed."
  echo "success: pre-commit installed."
  exit
fi

allfiles="$(git diff-index --name-only --diff-filter=d --cached HEAD)"
gofiles="$(git diff-index --name-only --diff-filter=d --cached HEAD | grep '\.go$' || true)"

if test -z "$allfiles"; then
  # No changed files, no checks to do.
  exit
fi

if test -z "$noxx" && grep -Hni xx""x $allfiles; then
  echo "Error: found xx""x comment, check if it was intended to commit, use noxx=1 envvar to skip."
  exit 1
fi

if test -n "$gofiles"; then
  # Go specific tests in this branch.
  echo -n 'formatting...'
  gofmt -l $gofiles >"$tmpfile" 2>&1
  echo -en "\r\e[K"
  if test -s "$tmpfile"; then
    echo "Error: gofmt failed for these files:"
    cat "$tmpfile"
    exit 1
  fi

  echo -n 'linting...'
  revive ./... >"$tmpfile" 2>&1
  echo -en "\r\e[K"
  if test -s "$tmpfile"; then
    echo "Error: revive failed:"
    cat "$tmpfile"
    exit 1
  fi

  echo -n 'testing...'
  go test ./... >"$tmpfile" 2>&1
  result="$?"
  echo -en "\r\e[K"
  if test "$result" -ne 0; then
    echo 'Error: tests failed, go test ./...:'
    cat "$tmpfile"
    exit 1
  fi
fi

rm -f "$tmpfile"