themes: Add theme powerline-icon (#509)

* New theme for oh-my-bash

- Theme based on powerline with icon usage | powerline-icon

* Error correction to the powerline-icon theme

* Update powerline-icon.base.sh

* themes/powerline-icon: Apply change from dea611b

* themes/powerline-icon: Apply change from dea611b (2)

* Changes to the powerline-icon theme

---------

Co-authored-by: Koichi Murase <myoga.murase@gmail.com>

themes/powerline-icon/powerline-icon.base.sh

@@ -0,0 +1,43 @@
+#! bash oh-my-bash.module
+
+source "$OSH/themes/powerline/powerline.base.sh"
+
+function __powerline_user_info_prompt {
+  local user_info=""
+  local color=${USER_INFO_THEME_PROMPT_COLOR}
+  local secondary_color="${USER_INFO_THEME_PROMPT_SECONDARY_COLOR}"
+
+  if [[ "${THEME_CHECK_SUDO}" = true ]]; then
+    # check whether sudo is active for no-password executions
+    if sudo -n cat <<< c3bcc5c 2>&1 | grep -q c3bcc5c; then
+      color=${USER_INFO_THEME_PROMPT_COLOR_SUDO}
+    fi
+  fi
+  case "${POWERLINE_PROMPT_USER_INFO_MODE}" in
+    "sudo")
+      if [[ "${color}" == "${USER_INFO_THEME_PROMPT_COLOR_SUDO}" ]]; then
+        user_info="!"
+      fi
+      ;;
+    *)
+      if [[ -n "${SSH_CLIENT}" ]]; then
+        user_info="${USER_INFO_SSH_CHAR}${USER}@${HOSTNAME}"
+      else
+        user_info="${USER}"
+      fi
+      ;;
+  esac
+  [[ -n "${user_info}" ]] && echo "🐧 ${user_info} `date +%X\ %D`|${color}|${secondary_color}"
+}
+
+function __powerline_cwd_prompt {
+  echo "$(pwd | sed "s|^${HOME}|🏠|")|${CWD_THEME_PROMPT_COLOR}"
+}
+
+function __powerline_last_status_prompt {
+  if [[ "$1" -ne 0 ]]; then
+    echo "❌${1}|${LAST_STATUS_THEME_PROMPT_COLOR}"
+  else
+    echo "✅|${LAST_STATUS_THEME_PROMPT_COLOR_SUCCESS}"
+  fi
+}

themes/powerline-icon/powerline-icon.theme.sh

@@ -0,0 +1,54 @@
+#! bash oh-my-bash.module
+
+source "$OSH/themes/powerline-icon/powerline-icon.base.sh"
+
+PROMPT_CHAR=${POWERLINE_PROMPT_CHAR:=""}
+POWERLINE_LEFT_SEPARATOR=${POWERLINE_LEFT_SEPARATOR:=""}
+
+USER_INFO_SSH_CHAR=${POWERLINE_USER_INFO_SSH_CHAR:=" "}
+USER_INFO_THEME_PROMPT_COLOR=0
+USER_INFO_THEME_PROMPT_SECONDARY_COLOR="-"
+USER_INFO_THEME_PROMPT_COLOR_SUDO=202
+
+PYTHON_VENV_CHAR=${POWERLINE_PYTHON_VENV_CHAR:="❲🐍❳ "}
+CONDA_PYTHON_VENV_CHAR=${POWERLINE_CONDA_PYTHON_VENV_CHAR:="❲c❳ "}
+PYTHON_VENV_THEME_PROMPT_COLOR=35
+
+SCM_NONE_CHAR=""
+SCM_GIT_CHAR=${POWERLINE_SCM_GIT_CHAR:=" "}
+SCM_THEME_PROMPT_CLEAN=""
+SCM_THEME_PROMPT_DIRTY=""
+SCM_THEME_PROMPT_CLEAN_COLOR=25
+SCM_THEME_PROMPT_DIRTY_COLOR=88
+SCM_THEME_PROMPT_STAGED_COLOR=30
+SCM_THEME_PROMPT_UNSTAGED_COLOR=92
+SCM_THEME_PROMPT_COLOR=${SCM_THEME_PROMPT_CLEAN_COLOR}
+
+RVM_THEME_PROMPT_PREFIX=""
+RVM_THEME_PROMPT_SUFFIX=""
+RBENV_THEME_PROMPT_PREFIX=""
+RBENV_THEME_PROMPT_SUFFIX=""
+RUBY_THEME_PROMPT_COLOR=161
+RUBY_CHAR=${POWERLINE_RUBY_CHAR:="❲r❳ "}
+
+CWD_THEME_PROMPT_COLOR=30
+
+LAST_STATUS_THEME_PROMPT_COLOR=52
+LAST_STATUS_THEME_PROMPT_COLOR_SUCCESS=42
+
+CLOCK_THEME_PROMPT_COLOR=240
+
+BATTERY_AC_CHAR=${BATTERY_AC_CHAR:="⚡"}
+BATTERY_STATUS_THEME_PROMPT_GOOD_COLOR=70
+BATTERY_STATUS_THEME_PROMPT_LOW_COLOR=208
+BATTERY_STATUS_THEME_PROMPT_CRITICAL_COLOR=160
+
+THEME_CLOCK_FORMAT=${THEME_CLOCK_FORMAT:="%H:%M:%S"}
+
+IN_VIM_THEME_PROMPT_COLOR=245
+IN_VIM_THEME_PROMPT_TEXT="vim"
+
+POWERLINE_PROMPT=${POWERLINE_PROMPT:="user_info scm python_venv ruby cwd"}
+
+function _omb_theme_PROMPT_COMMAND { __powerline_prompt_command "$@"; }
+_omb_util_add_prompt_command _omb_theme_PROMPT_COMMAND