change to curl and check for font name

earth_wallpaper.sh

@@ -11,14 +11,6 @@ cur_dir=$(dirname "${0}")
 # shellcheck disable=SC1091
 [ -r "${cur_dir}/shared_functions.sh" ] && . "${cur_dir}/shared_functions.sh"
 
-wallpaper_file="${HOME}/wallpaper.jpg"
-wallpaper_file2="/etc/lightdm/background.jpg"
-archive_folder="${HOME}/earth_pics"
-screen_width=1366
-# `convert -list font` to get the list of fonts
-font_name="Bitstream-Vera-Sans"
-gsettings_cmd=$(which gsettings)
-font_name=$("${gsettings_cmd}" get org.gnome.desktop.interface font-name | sed "s/'//g" | sed 's/ [0-9]*$//g')
 check_internet() {
 	default_route=$(/sbin/route -n | egrep "^0.0.0.0")
 	if [ "$default_route" == "" ]; then
@@ -27,13 +19,80 @@ check_internet() {
 	ping -q -c 2 en.wikipedia.org &> /dev/null
 	return $?
 }
+
+check_font() {
+  font_name="${1}"
+  convert_cmd="$(which conver)"
+  if "${convert_cmd}" -list font | grep Font: | awk '{print($2)}' | grep font_name > /dev/null; then
+    return "${font_name}"
+  else
+    new_font_name="$("${convert_cmd}" -list font | grep Font: | awk '{print($2)}' |head -n 1)"
+    if [ "${new_font_name}" != "" ]; then
+      message "Couldn't find font '${font_name}' in the list from convert, so I'm using the first '${new_font_name}'"
+      return "${new_font_name}"
+    else
+      message "Error. No fonts available for convert!" p
+      exit 1
+    fi
+  fi
+}
+
+wallpaper_file="${HOME}/wallpaper.jpg"
+wallpaper_file2="/etc/lightdm/background.jpg"
+archive_folder="${HOME}/earth_pics"
+screen_width=1366
+# `convert -list font` to get the list of fonts
+font_name="Bitstream-Vera-Sans"
+gsettings_cmd=$(which gsettings)
+font_name=$("${gsettings_cmd}" get org.gnome.desktop.interface font-name | sed "s/'//g" | sed 's/ [0-9]*$//g')
+
+while [ $# -gt 0 ]
+do
+  case "$1" in
+    "--wallpaper-file")
+      shift
+      wallpaper_file="${1}"
+      shift
+      ;;
+    "--archive-folder")
+      shift
+      archive_folder="${1}"
+      shift
+      ;;
+    "--screen-width")
+      shift
+      screen_width="${1}"
+      shift
+      ;;
+    "--font-name")
+      shift
+      font_name="${1}"
+      shift
+      ;;
+    "--debug")
+      shift
+      DEBUG=1
+      ;;
+    '--logfile')
+      shift
+      LOG_FILE="$1"
+      shift
+      ;;
+    *)
+      message "Unknown parameter '${1}'"
+      shift
+      ;;
+  esac
+done
+
 check_internet || exit 1
 
+font_name="$(check_font "${font_name}")"
 message "Using font '${font_name}'"
 
-wget_cmd=$(which wget)
-if [ -z ${wget_cmd} ]; then
-	echo "It seems like wget is not installed."
+curl_cmd=$(which curl)
+if [ -z ${curl_cmd} ]; then
+	echo "It seems like curl is not installed."
 	exit 3
 fi
 
@@ -46,7 +105,7 @@ str_city=$(echo "$city" | sed "s/ /_/g" -)
 message "str_city $str_city"
 wiki_url="https://en.wikipedia.org/wiki/$str_city"
 message "wiki_url $wiki_url"
-wiki_content=$("${wget_cmd}" -q -O - $wiki_url)
+wiki_content=$("${curl_cmd}" -s $wiki_url)
 latitude=$(echo $wiki_content | egrep -o "[0-9]{1,2}°[0-9]?[0-9]?′?[0-9]?[0-9]?″?[NS]" | head -n 1)
 message "latitude $latitude"
 longitude=$(echo $wiki_content | egrep -o "[0-9]{1,2}°[0-9]?[0-9]?′?[0-9]?[0-9]?″?[EW]" | head -n 1)
@@ -103,7 +162,7 @@ date="$cur_date_$time"
 if [[ -e $wallpaper_file ]]; then
 	rm "${wallpaper_file}" -rf
 fi
-"${wget_cmd}" -q $url -O $wallpaper_file
+"${curl_cmd}" -s $url > $wallpaper_file
 error_code=$?
 if [[ "$error_code" != "0" ]]; then
 	echo "Error $error_code downloading image from '$url' to '$wallpaper_file'"
@@ -116,7 +175,7 @@ if [[ "$o_longitude" == "West" ]]; then
 	g_longitude="-$g_longitude"
 fi
 weather_url="http://api.wunderground.com/api/be78b9c2c0dbd00f/conditions/lang:ES/q/$g_latitude,$g_longitude.xml"
-temperature=$("${wget_cmd}" -q -O - "$weather_url" | egrep -o "<temp_c>-?[0-9]*\.?[0-9]?</temp_c>" | sed "s/<temp_c>//g" - | sed "s|</temp_c>||g" -)
+temperature=$("${curl_cmd}" -s "$weather_url" | egrep -o "<temp_c>-?[0-9]*\.?[0-9]?</temp_c>" | sed "s/<temp_c>//g" - | sed "s|</temp_c>||g" -)
 text="Image from $cur_date at $time\n$city $temperatureº C"
 convert_cmd=$(which convert)
 if [ ! -x "${convert_cmd}" ]; then