pre-commit

#!/usr/bin/env bash

# Introduce: https://github.com/wolfogre/git-text
# Version:   v1.2.0

set -e

function find_wrong_files() {
  for FILE in "$@"; do
    local FILE_TYPE
    FILE_TYPE=$(file --mime-type "$FILE" | awk '{print $2}')
    if ! is_text "$FILE_TYPE"; then
      echo "$FILE"
    fi
  done
}

function is_text() {
  FILE_TYPE=$1
  local MAIN_TYPE=${FILE_TYPE%%/*}
  local SUB_TYPE=${FILE_TYPE##*/}

  case "$MAIN_TYPE" in
  "text")
    return 0
    ;;
  "inode")
    case "$SUB_TYPE" in
    "x-empty"|"directory"|"symlink")
      return 0
      ;;
    esac
    ;;
  "application")
    case "$SUB_TYPE" in
    "json"|"csv")
      return 0
      ;;
    esac
    ;;
  "image")
    case "$SUB_TYPE" in
    "svg+xml")
      return 0
      ;;
    esac
    ;;
  esac
  return 1
}

FILES=$(git status --short | grep -E "^(A|M)" | awk '{print $2}')
if [[ -z "$FILES" ]]; then
	exit 0
fi

WRONG_FILES=$(echo "$FILES" | while read -r LINE; do find_wrong_files "$LINE"; done)

if [[ -n "${WRONG_FILES}" ]]; then
	echo "DELETE NON-TEXT FILES OR USE 'git commit -n':"
	echo "$WRONG_FILES" | xargs file --mime-type
	echo -e "\nIf there are any mistakes, please report to https://github.com/wolfogre/git-text/issues/new"
	exit 1
fi

echo "ALL FILES ARE TEXT:"
echo "$FILES" | xargs file --mime-type