Maps - Added a script to download and generate map data based on user selection

scripts/download-osm-maps.sh

@@ -0,0 +1,65 @@
+#!/bin/bash
+# Author   : Gaston Gonzalez
+# Date     : 4 November 2024
+# Purpose  : Downloads OSM .pbf file selected by user
+
+HTML=page.html
+URL=http://download.geofabrik.de/north-america/us.html
+
+# Location to store OSM .bpf files
+PBF_MAP_DIR=/etc/skel/my-maps
+
+[ ! -e ${PBF_MAP_DIR} ] && mkdir -v ${PBF_MAP_DIR}
+
+if [ ! -e ${HTML} ]; then
+  et-log "Downloading list of maps files for the US..."
+  curl -s -L -f -o ${HTML} ${URL}
+
+  if [ $? -ne 0 ]; then
+    et-log "Can't download list map data from ${URL}. Exiting..."
+    exit 1
+  fi
+fi
+
+et-log "Extracting state-level .pbf file list..."
+
+options=()
+while IFS= read -r state_html; do
+    state_file_suffix=$(echo $state_html | sed -n 's/.*href="\([^"]*\)".*/\1/p')
+    pbf_file=$(echo $state_file_suffix | sed 's|bz2|pbf|')
+    state_url="http://download.geofabrik.de/north-america/${pbf_file}"
+
+    # Extract a display friendly name for the state
+    state_name=$(echo $state_file_suffix | sed 's|us/||' | sed 's|-latest.osm.bz2||')
+
+    options+=("$state_name" "$state_url")
+done < <(grep "[.]pbf" page.html | grep 'href="us/' | sort)
+
+SELECTED_STATE=$(dialog --clear --menu "Select a map file:" 20 80 10 "${options[@]}" 3>&1 1>&2 2>&3)
+exit_status=$?
+
+tput sgr 0 && clear
+
+if [ $exit_status -eq 0 ]; then
+  download_file="${SELECTED_STATE}-latest.osm.pbf"
+  download_url="http://download.geofabrik.de/north-america/us/${download_file}"
+
+  if [ -e ${download_file} ]; then
+    et-log "${download_file} already exists. Skipping download."
+  else
+    et-log "Downloading ${download_url}."
+    curl -L -f -O ${download_url}
+  fi
+
+  
+  if [ -e ${download_file} ]; then
+    navit_osm_bin_file=$(echo ${download_file} | sed 's|pbf|bin|') 
+    navit_osm_bin_file_path="/etc/skel/.navit/maps/${navit_osm_bin_file}" 
+    et-log "Generating OSM map for Navit: ${navit_osm_bin_file_path}"
+    maptool --protobuf -i ${download_file} ${navit_osm_bin_file_path}
+
+    et-log "Moving OSM .pbf to  ${PBF_MAP_DIR}"
+    mv -v ${download_file} ${PBF_MAP_DIR}
+  fi
+fi
+