osm-garmin: add Containerfile

osm-garmin/app/utils.sh

@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+
+bounds_dir="/data/build/bounds"
+build_dir="/data/build/tmp"
+maps_dir="/data/build/osm"
+out_dir="/data/maps"
+styles_dir="/data/styles"
+tiles_dir="/data/build/tiles"
+
+function die() {
+    echo "Error: $1"
+    exit 255
+}
+
+function check_osm_region_exists() {
+    region="$1"
+    exists="true"
+
+    curl -ILs --fail "$(get_pbf_url "$region")" 2> /dev/null
+    [[ $? != 0 ]] && exists="false"
+
+    echo $exists   
+}
+
+function check_osm_update() {
+    region="$1"
+    region_path="$maps_dir/$(get_region_shortname "$region").osm.pbf"
+    update="true"
+
+    md5="$(curl -Ls --fail "$(get_pbf_url "$region").md5" | cut -d' ' -f1)"
+    
+    if [[ $? == 0 ]]; then
+        if [[ -f "$region_path" ]]; then
+            if [[ "$(get_md5 "$region_path")" == "$md5" ]]; then
+                update="false"
+            fi
+        fi
+    fi
+
+    echo $update
+}
+
+function get_md5() {
+    file="$1"
+    echo "$(md5sum "$file" | cut -d' ' -f1)"
+}
+
+function get_md5_dir() {
+    dir="$1"
+    echo "$(find "$dir" -type f -name "*.*" -exec md5sum {} + | awk '{print $1}' | sort | md5sum)"
+}
+
+function get_pbf_url() {
+    region="$1"
+    echo "https://download.geofabrik.de/$region-latest.osm.pbf"
+}
+
+function get_region_shortname() {
+    region="$1"
+    echo "$(echo "$region" | sed "s/\//./g")"
+}