client: lib_docker: factor out args parsers

client/src/docker/lib/internal/lib_docker.bash

@@ -98,7 +98,7 @@ function lib_docker::__docker_compose()
   popd 1>/dev/null || return $?
 }
 
-function lib_docker::__build()
+function lib_docker::__parse_args_build()
 {
   [ -z "$global_usage" ] && lib_utils::die_fatal
   [ -z "$global_arg_delim_1" ] && lib_utils::die_fatal
@@ -175,10 +175,6 @@ function lib_docker::__build()
       ;;
   esac
 
-  #
-  # Ensure supported arguments
-  #
-
   [ $# -eq 0 ] && lib_utils::die_usage "$_usage"
 
   for _arg in "$@"; do
@@ -186,10 +182,6 @@ function lib_docker::__build()
       && lib_utils::die_usage "$_usage"
   done
 
-  #
-  # Parse arguments before testing
-  #
-
   # Parse key for value
   for _arg in "$@"; do
 
@@ -202,19 +194,20 @@ function lib_docker::__build()
     fi
   done
 
-  #
-  # Test argument values, set globals
-  #
-
   IFS="$global_arg_delim_3"
 
   # Arg: type
   if [ ! -z "$_arg_type" ]; then
     [[ ! "$_arg_type" =~ ^default$|^slim$|^tiny$|^micro$ ]] \
       && lib_utils::die_usage "$_usage"
-  fi
 
-  # TODO: factor out parser
+    declare -gr global_arg_type="$_arg_type"
+  fi
+}
+
+function lib_docker::__build()
+{
+  lib_docker::__parse_args_build "$@"
 
   #
   # Generate Dockerfile
@@ -241,22 +234,22 @@ function lib_docker::__build()
   # Append to Dockerfile according to type
   #
 
-  if [[ "$global_platform" == "dev-tools" && "$_arg_type" != "default" ]]; then
-    lib_utils::print_warning "'${_arg_type}' is not supported for 'dev-tools', using 'default'"
+  if [[ "$global_platform" == "dev-tools" && "$global_arg_type" != "default" ]]; then
+    lib_utils::print_warning "'${global_arg_type}' is not supported for 'dev-tools', using 'default'"
   fi
 
   if [[ "$global_platform" != "dev-tools" ]]; then
 
     local _in_files=()
 
-    case "$_arg_type" in
+    case "$global_arg_type" in
       default | slim)
         _in_files+=("hledger-flow.src")
-        [[ "$_arg_type" == "default" ]] && _in_files+=("root")
+        [[ "$global_arg_type" == "default" ]] && _in_files+=("root")
         ;;
       tiny | micro)
         _in_files+=("hledger-flow.bin")
-        [[ "$_arg_type" == "tiny" ]] && _in_files+=("root")
+        [[ "$global_arg_type" == "tiny" ]] && _in_files+=("root")
         ;;
       *)
         lib_utils::die_fatal "unsupported build"
@@ -371,7 +364,7 @@ function lib_docker::__run()
   return $_return
 }
 
-function lib_docker::__shell()
+function lib_docker::__parse_args_shell()
 {
   [ -z "$global_usage" ] && lib_utils::die_fatal
   [ -z "$global_arg_delim_2" ] && lib_utils::die_fatal
@@ -379,6 +372,7 @@ function lib_docker::__shell()
   [ -z "$global_user" ] && lib_utils::die_fatal
 
   local -r _arg="$1"
+
   local -r _usage="
 \e[32mDescription:\e[0m
 
@@ -424,23 +418,29 @@ function lib_docker::__shell()
       if [ -z "$_arg_user" ]; then
         lib_utils::die_usage "$_usage"
       fi
+      declare -gr global_arg_user="${_arg_user}"
     fi
   else
     # Use default user
-    local _arg_user="${global_user}"
+    declare -gr global_arg_user="${global_user}"
   fi
 
-  if [ -z "$_arg_user" ]; then
+  if [ -z "$global_arg_user" ]; then
     lib_utils::die_usage "$_usage"
   fi
-
-  [ -z "$global_container" ] && lib_utils::die_fatal
-
-  lib_utils::print_debug "Spawning shell in container '${global_container}'"
-  docker exec -it --user "$_arg_user" --workdir / "$global_container" /bin/bash
 }
 
-function lib_docker::__edit()
+function lib_docker::__shell()
+{
+  lib_docker::__parse_args_shell "$@"
+
+  [ -z "$global_container" ] && lib_utils::die_fatal
+  lib_utils::print_debug "Spawning shell in container '${global_container}'"
+
+  docker exec -it --user "$global_arg_user" --workdir / "$global_container" /bin/bash
+}
+
+function lib_docker::__parse_args_edit()
 {
   [ -z "$global_usage" ] && lib_utils::die_fatal
   [ -z "$global_arg_delim_2" ] && lib_utils::die_fatal
@@ -511,8 +511,13 @@ function lib_docker::__edit()
       fi
     done
 
-    readonly _edit_arg_type=("${_read[@]}")
+    declare -gr global_arg_type=("${_read[@]}")
   fi
+}
+
+function lib_docker::__edit()
+{
+  lib_docker::__parse_args_edit "$@"
 
   [ -z "$EDITOR" ] \
     && lib_utils::die_fatal "Export EDITOR to your preferred editor"
@@ -528,7 +533,7 @@ function lib_docker::__edit()
   # Run all files through one editor instance
   local _paths=()
 
-  for _type in "${_edit_arg_type[@]}"; do
+  for _type in "${global_arg_type[@]}"; do
     case "$_type" in
       env)
         _paths+=("$global_env_file")