wm

Wang–Müller line generalization algorithm in PostGIS
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      1 #!/bin/bash
      2 set -euo pipefail
      3 
      4 name=wm-mj
      5 
      6 _psql() {
      7     env \
      8         PGPASSWORD=osm \
      9         PGHOST=127.0.0.1 \
     10         PGUSER=osm \
     11         PGDATABASE=osm \
     12         psql "$@"
     13 }
     14 
     15 _wait_for_postgres() {
     16     >&2 echo -n "Waiting for postgres"
     17     for _ in $(seq 240); do
     18       if _psql -qc '\q' 2>/dev/null; then
     19           >&2 echo " up"
     20           exit 0
     21       fi
     22       >&2 echo -n .
     23       sleep 1
     24     done
     25     >&2 echo " down"
     26     exit 1
     27 }
     28 
     29 case ${1:-} in
     30     start)
     31         _psql -qc '\q' 2>/dev/null && exit 0
     32         docker run -d --rm \
     33             --net=host \
     34             -e POSTGRES_DBNAME=osm \
     35             -e POSTGRES_USER=osm \
     36             -e POSTGRES_PASSWORD=osm \
     37             --name "$name" \
     38             postgis/postgis:13-3.1-alpine \
     39                 -c log_statement=all \
     40                 -c listen_addresses=127.0.0.1
     41         _wait_for_postgres
     42         ;;
     43     stop)
     44         docker stop "$name"
     45         ;;
     46     *)
     47         _psql "$@"
     48         ;;
     49 esac