style: apply formatter beautifysh and shfmt, fix shellcheck war…

…ning

entrypoint.sh

@@ -3,15 +3,15 @@
 set -eo pipefail
 shopt -s extglob globstar nullglob
 
-info() {
+function info() {
   echo -e "\033[1;34m$1\033[0m"
 }
 
-warn() {
+function warn() {
   echo "::warning :: $1"
 }
 
-error() {
+function error() {
   echo "::error :: $1"
   exit 1
 }
@@ -33,50 +33,50 @@ latexmk_use_lualatex="${14}"
 latexmk_use_xelatex="${15}"
 
 # install git on old images
-if ! command -v git &>/dev/null; then
+if ! command -v git &> /dev/null; then
   apt-get update -qq && apt-get install -qq -y git
 fi
 git config --system --add safe.directory /github/workspace
 
-if [[ -z "$root_file" ]]; then
+if [[ -z "${root_file}" ]]; then
   error "Input 'root_file' is missing."
 fi
 
-readarray -t root_file <<<"$root_file"
+readarray -t root_file <<< "${root_file}"
 
-if [[ ! -d "$working_directory" ]]; then
-  mkdir -p "$working_directory"
+if [[ ! -d "${working_directory}" ]]; then
+  mkdir -p "${working_directory}"
 fi
-cd "$working_directory"
+cd "${working_directory}"
 
-if [[ "$glob_root_file" = "true" ]]; then
+if [[ "${glob_root_file}" = "true" ]]; then
   expanded_root_file=()
   for pattern in "${root_file[@]}"; do
     # shellcheck disable=SC2206
-    expanded=( $pattern )
+    expanded=(${pattern})
     expanded_root_file+=("${expanded[@]}")
   done
   root_file=("${expanded_root_file[@]}")
 fi
 
-if [[ -z "$compiler" && -z "$args" ]]; then
+if [[ -z "${compiler}" && -z "${args}" ]]; then
   warn "Input 'compiler' and 'args' are both empty. Reset them to default values."
   compiler="latexmk"
   args="-pdf -file-line-error -halt-on-error -interaction=nonstopmode"
 fi
 
-IFS=' ' read -r -a args <<<"$args"
+IFS=' ' read -r -a args <<< "${args}"
 
-if [[ "$compiler" = "latexmk" ]]; then
-  if [[ "$latexmk_shell_escape" = "true" ]]; then
+if [[ "${compiler}" = "latexmk" ]]; then
+  if [[ "${latexmk_shell_escape}" = "true" ]]; then
     args+=("-shell-escape")
   fi
 
-  if [[ "$latexmk_use_lualatex" = "true" && "$latexmk_use_xelatex" = "true" ]]; then
+  if [[ "${latexmk_use_lualatex}" = "true" && "${latexmk_use_xelatex}" = "true" ]]; then
     error "Input 'latexmk_use_lualatex' and 'latexmk_use_xelatex' cannot be used at the same time."
   fi
 
-  if [[ "$latexmk_use_lualatex" = "true" ]]; then
+  if [[ "${latexmk_use_lualatex}" = "true" ]]; then
     for i in "${!args[@]}"; do
       if [[ "${args[i]}" = "-pdf" ]]; then
         unset 'args[i]'
@@ -86,15 +86,15 @@ if [[ "$compiler" = "latexmk" ]]; then
     # LuaLaTeX use --flag instead of -flag for arguments.
     for VAR in -file-line-error -halt-on-error -shell-escape; do
       for i in "${!args[@]}"; do
-        if [[ "${args[i]}" = "$VAR" ]]; then
-          args[i]="-$VAR"
+        if [[ "${args[i]}" = "${VAR}" ]]; then
+          args[i]="-${VAR}"
         fi
       done
     done
     args=("${args[@]/#-interaction=/--interaction=}")
   fi
 
-  if [[ "$latexmk_use_xelatex" = "true" ]]; then
+  if [[ "${latexmk_use_xelatex}" = "true" ]]; then
     for i in "${!args[@]}"; do
       if [[ "${args[i]}" = "-pdf" ]]; then
         unset 'args[i]'
@@ -110,80 +110,80 @@ else
   done
 fi
 
-if [[ -n "$extra_system_packages" ]]; then
+if [[ -n "${extra_system_packages}" ]]; then
   apt-get update -qq
   IFS=$' \t\n'
-  for pkg in $extra_system_packages; do
-    info "Install $pkg by apt"
-    apt-get install -qq -y "$pkg"
+  for pkg in ${extra_system_packages}; do
+    info "Install ${pkg} by apt"
+    apt-get install -qq -y "${pkg}"
   done
 fi
 
-if [[ -n "$extra_fonts" ]]; then
-  readarray -t extra_fonts <<<"$extra_fonts"
+if [[ -n "${extra_fonts}" ]]; then
+  readarray -t extra_fonts <<< "${extra_fonts}"
   expanded_extra_fonts=()
   for pattern in "${extra_fonts[@]}"; do
     # shellcheck disable=SC2206
-    expanded=( $pattern )
+    expanded=(${pattern})
     expanded_extra_fonts+=("${expanded[@]}")
   done
   extra_fonts=("${expanded_extra_fonts[@]}")
 
-  mkdir -p "$HOME/.local/share/fonts/"
+  mkdir -p "${HOME}/.local/share/fonts/"
 
   for f in "${extra_fonts[@]}"; do
-    if [[ -z "$f" ]]; then
+    if [[ -z "${f}" ]]; then
       continue
     fi
 
-    info "Install font $f"
-    cp -r "$f" "$HOME/.local/share/fonts/"
+    info "Install font ${f}"
+    cp -r "${f}" "${HOME}/.local/share/fonts/"
   done
 
   fc-cache -fv
 fi
 
-if [[ -n "$extra_packages" ]]; then
+if [[ -n "${extra_packages}" ]]; then
   warn "Input 'extra_packages' is deprecated. We now build LaTeX document with full TeXLive installed."
 fi
 
-if [[ -n "$pre_compile" ]]; then
+if [[ -n "${pre_compile}" ]]; then
   info "Run pre compile commands"
-  eval "$pre_compile"
+  eval "${pre_compile}"
 fi
 
 for f in "${root_file[@]}"; do
-  if [[ -z "$f" ]]; then
+  if [[ -z "${f}" ]]; then
     continue
   fi
 
-  if [[ "$work_in_root_file_dir" = "true" ]]; then
-    pushd "$(dirname "$f")" >/dev/null
-    f="$(basename "$f")"
-    info "Compile $f in $PWD"
+  if [[ "${work_in_root_file_dir}" = "true" ]]; then
+    pushd "$(dirname "${f}")" > /dev/null
+    f="$(basename "${f}")"
+    info "Compile ${f} in ${PWD}"
   else
-    info "Compile $f"
+    info "Compile ${f}"
   fi
 
-  if [[ ! -f "$f" ]]; then
-    error "File '$f' cannot be found from the directory '$PWD'."
+  if [[ ! -f "${f}" ]]; then
+    error "File '${f}' cannot be found from the directory '${PWD}'."
   fi
 
-  "$compiler" "${args[@]}" "$f" || ret="$?"
-  if [[ "$ret" -ne 0 ]]; then
-    if [[ "$continue_on_error" = "true" ]]; then
-      warn "Compile $f failed with exit_code $ret. However, we will continue since 'continue-on-error' is enabled."
+  "${compiler}" "${args[@]}" "${f}" || ret="$?"
+  if [[ "${ret}" -ne 0 ]]; then
+    if [[ "${continue_on_error}" = "true" ]]; then
+      warn "Compile ${f} failed with exit_code ${ret}. However, we will continue since 'continue-on-error' is enabled."
     else
-      exit "$ret"
+      exit "${ret}"
     fi
   fi
 
-  if [[ "$work_in_root_file_dir" = "true" ]]; then
-    popd >/dev/null
+  if [[ "${work_in_root_file_dir}" = "true" ]]; then
+    popd > /dev/null
   fi
 done
 
-if [[ -n "$post_compile" ]]; then
+if [[ -n "${post_compile}" ]]; then
   info "Run post compile commands"
-  eval "$post_compile"
+  eval "${post_compile}"
 fi