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#!/bin/sh -eu
#
# osmmerge -- Merges OSM files, with support for local not yet uploaded files
#
# Copyright (c) 2019 Samuel Lidén Borell <samuel@kodafritt.se>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
tdir=$(mktemp -d --tmpdir osmmerge.XXXXXXXX)
echo "tempdir: $tdir"
last_osm_id() {
grep -oEh 'id="[-0-9]+"' "$1" | tail -n 1 | grep -oE '[0-9]+' || true
}
offset=1
echo "Renumbering IDs..."
while [ $# != 0 ]; do
nodecount=$(last_osm_id "$1")
if [ -z "$nodecount" ] ; then
shift
continue
fi
echo "Using ID range $offset-$((offset + nodecount - 1)) for $1"
if ! osmium renumber --start -$offset -o "$tdir/$offset.osm" "$1"; then
echo "[!] File could not be renumbered, broken OSM file? $1 (with $nodecount IDs)" >&2
rm "$tdir/$offset.osm"
shift
continue
fi
echo "Offset: $offset --> $((offset + nodecount))"
offset=$((offset + nodecount))
shift
done
echo "Merging..."
osmium merge -o "merged.osm" "$tdir"/*
echo "Done."
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