add psma download script

.gitignore

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+downloads

scripts/psma.sh

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+#!/bin/bash
+set -euo pipefail
+. "$(dirname "$0")/utils.sh"
+
+# source: https://data.gov.au/dataset/ds-dga-bdcf5b09-89bc-47ec-9281-6b8e9ee147aa/details?q=psma%20localities
+PSMA_ZIP_URL='https://data.gov.au/data/dataset/bdcf5b09-89bc-47ec-9281-6b8e9ee147aa/resource/53c24b8e-4f55-4eed-a189-2fc0dcca6381/download/aug20_adminbounds_esrishapefileordbffile.zip'
+PSMA_ZIP_FILENAME="${PSMA_ZIP_URL##*/}"
+PSMA_ZIP_LOCAL_PATH="${DOWNLOADS_DIR}/${PSMA_ZIP_FILENAME}"
+
+# download file
+if [ -f "${PSMA_ZIP_LOCAL_PATH}" ]; then
+  echo "file exists, skip downloading: ${PSMA_ZIP_FILENAME}"
+else
+  curl "${PSMA_ZIP_URL}" > "${PSMA_ZIP_LOCAL_PATH}"
+fi
+
+# decompress file
+if [ -d "${DOWNLOADS_DIR}/psma" ]; then
+  echo "dir exists, skip extracting: ${PSMA_ZIP_FILENAME}"
+else
+  mkdir -p "${DOWNLOADS_DIR}/psma"
+  unzip "${PSMA_ZIP_LOCAL_PATH}" -d "${DOWNLOADS_DIR}/psma"
+fi
+
+# skip geojson for now
+exit 0
+
+# convert to geojson
+IFS=$'\n'
+for SHP_PATH in $(find "${DOWNLOADS_DIR}/psma" -type f -name '*.shp');
+do
+  PSMA_GEOJSON_GZ_FILENAME_LOCAL_PATH="${SHP_PATH%.*}.geojsonl.gz"
+  if [ -f "${PSMA_GEOJSON_GZ_FILENAME_LOCAL_PATH}" ]; then
+    echo "file exists, skip generating: ${PSMA_GEOJSON_GZ_FILENAME}"
+  else
+    ogr2ogr \
+      -f 'GeoJSON' \
+      -t_srs 'crs:84' \
+      '/vsistdout/' \
+      "${SHP_PATH}" \
+        | pigz --best \
+          > "${PSMA_GEOJSON_GZ_FILENAME_LOCAL_PATH}"
+  fi
+done
+unset IFS

scripts/utils.sh

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+#!/bin/bash
+set -euo pipefail
+
+# OSX comes bundled with versions of readlink, sed, parallel etc which are not
+# compatible with the linux tools. Force OSX users to install the GNU
+# compatible versions (prefixed with 'g', such as 'greadlink', 'gsed' etc.).
+export CMD_READLINK='readlink'
+if [[ "$OSTYPE" == "darwin"* ]]; then
+  if [ -x "$(command -v greadlink)" ]; then
+    CMD_READLINK='greadlink';
+  else
+    2>&1 echo 'OSX: you must install the gnu standard tooling using:'
+    2>&1 echo 'brew install coreutils'
+  fi
+fi
+
+# resolve paths
+export SCRIPTS_DIR=$( dirname $( ${CMD_READLINK} -f "${BASH_SOURCE[0]}" ) )
+export DOWNLOADS_DIR="${SCRIPTS_DIR}/../downloads"
+export CONCORDANCES_DIR="${SCRIPTS_DIR}/../concordances"
+export DATA_DIR="${SCRIPTS_DIR}/../data"