railway-maxspeed: handle maxspeed:forward and maxspeed:backward

railway-maxspeed.json

@@ -14,36 +14,67 @@
     },
     "feature": {
         "pre": [
-            "{% if tags.maxspeed is not defined %}",
             "{% set maxspeedKmh = null %}",
             "{% set maxspeed = null %}",
             "{% set unit = null %}",
-            "{% else %}",
             "",
-            "{% if tags.maxspeed|matches(\"^[0-9]+$\") %}",
-            "{% set maxspeedKmh = tags.maxspeed %}",
-            "{% set maxspeed = tags.maxspeed %}",
-            "{% set unit = \"km/h\" %}",
+            "{% if tags.maxspeed is defined %}",
+            "  {% if tags.maxspeed|matches(\"^[0-9]+$\") %}",
+            "    {% set maxspeedKmh = tags.maxspeed %}",
+            "    {% set maxspeed = tags.maxspeed %}",
+            "    {% set unit = \"km/h\" %}",
+            "  {% elseif tags.maxspeed|matches( \"(^[0-9]+) mph$\") %}",
+            "    {% set m = tags.maxspeed|matches(\"(^[0-9]+) mph$\") %}",
+            "    {% set maxspeedKmh = m[1] * 1.60934 %}",
+            "    {% set maxspeed = m[1] %}",
+            "    {% set unit = \"mph\" %}",
+            "  {% endif %}",
             "{% endif %}",
             "",
-            "",
-            "{% set m = tags.maxspeed|matches(\"(^[0-9]+) mph$\") %}",
-            "{% if m %}",
-            "{% set maxspeedKmh = m[1] * 1.60934 %}",
-            "{% set maxspeed = m[1] %}",
-            "{% set unit = \"mph\" %}",
+            "{% if attribute(tags, 'maxspeed:forward') is defined %}",
+            "  {% if attribute(tags, 'maxspeed:forward')|matches(\"^[0-9]+$\") %}",
+            "    {% set maxspeedFKmh = attribute(tags, 'maxspeed:forward') %}",
+            "    {% set maxspeedF = attribute(tags, 'maxspeed:forward') %}",
+            "    {% set unit = \"km/h\" %}",
+            "  {% elseif attribute(tags, 'maxspeed:forward')|matches(\"^[0-9]+ mph$\") %}",
+            "    {% set m = attribute(tags, 'maxspeed:forward')|matches(\"(^[0-9]+) mph$\") %}",
+            "    {% set maxspeedFKmh = m[1] * 1.60934 %}",
+            "    {% set maxspeedF = m[1] %}",
+            "    {% set unit = \"mph\" %}",
+            "  {% endif %}",
             "{% endif %}",
             "",
+            "{% if attribute(tags, 'maxspeed:backward') is defined %}",
+            "  {% if attribute(tags, 'maxspeed:backward')|matches(\"^[0-9]+$\") %}",
+            "    {% set maxspeedBKmh = attribute(tags, 'maxspeed:backward') %}",
+            "    {% set maxspeedB = attribute(tags, 'maxspeed:backward') %}",
+            "    {% set unit = \"km/h\" %}",
+            "  {% elseif attribute(tags, 'maxspeed:backward')|matches(\"^[0-9]+ mph$\") %}",
+            "    {% set m = attribute(tags, 'maxspeed:backward')|matches(\"(^[0-9]+) mph$\") %}",
+            "    {% set maxspeedBKmh = m[1] * 1.60934 %}",
+            "    {% set maxspeedB = m[1] %}",
+            "    {% set unit = \"mph\" %}",
+            "  {% endif %}",
             "{% endif %}",
             "",
             "{% if not maxspeedKmh %}",
             "{% set color = \"#404040\" %}",
             "{% else %}",
             "{% set color = colorInterpolate(const.colorMap, (maxspeedKmh - const.offsetColorSpeed) / const.highestColorSpeed) %}",
+            "{% endif %}",
+            "",
+            "{% if maxspeedFKmh %}",
+            "{% set colorF = colorInterpolate(const.colorMap, (maxspeedFKmh - const.offsetColorSpeed) / const.highestColorSpeed) %}",
+            "{% endif %}",
+            "",
+            "{% if maxspeedBKmh %}",
+            "{% set colorB = colorInterpolate(const.colorMap, (maxspeedBKmh - const.offsetColorSpeed) / const.highestColorSpeed) %}",
             "{% endif %}"
         ],
         "description": [
-            "{% if maxspeed %}",
+            "{% if maxspeedF or maxspeedB %}",
+            "<span style='color: {{ colorB }}'>{{ maxspeedB|default(trans('unknown')) }}</span> / <span style='color: {{ colorF }}'>{{ maxspeedF|default(trans('unknown')) }}</span> {{ unit }}",
+            "{% elseif maxspeed %}",
             "<span style='color: {{ color }}'>{{ maxspeed }} {{ unit }}</span>",
             "{% elseif tags.maxspeed %}",
             "{{ tags.maxspeed }}",
@@ -53,12 +84,30 @@
         ],
         "markerSymbol": null,
         "listMarkerSymbol": "line",
+        "styles": "{% if maxspeedB or maxspeedF %}left,right,default{% else %}default{% endif %}",
         "style": {
-            "width": "3",
+            "width": "{% if maxspeedB or maxspeedF %}0{% else %}4{% endif %}",
             "color": "{{ color }}",
-            "text": "{{ maxspeed }}          ",
+            "text": [
+                "{% if maxspeedB or maxspeedF %}",
+                "  {% if maxspeedB %}🡸 {{ maxspeedB }} {% endif %}|{% if maxspeedF %} {{ maxspeedF }} 🡺{% endif %}       ",
+                "{% else %}",
+                "  {{ maxspeed }}         ",
+                "{% endif %}"
+            ],
             "textRepeat": "1",
+            "textOffset": "4",
             "textFontWeight": "bold"
+        },
+        "style:left": {
+            "width": "2",
+            "color": "{{ colorB|default('#404040') }}",
+            "offset": "-1"
+        },
+        "style:right": {
+            "width": "2",
+            "color": "{{ colorF|default('#404040') }}",
+            "offset": "1"
         }
     },
     "const": {