openmaptiles/sh/gen_etl_graph_railway.sh

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ID=railway
DOT=${ID}.dot
echo "digraph G
{
rankdir=LR;
" > $DOT
cat ./layers/${ID}/mapping.yaml | grep "# etldoc:" | sed 's/# etldoc://g' >>$DOT
cat ./layers/${ID}/types.sql | grep "\-\- etldoc:" | sed 's/-- etldoc://g' >>$DOT
cat ./layers/${ID}/railway.sql | grep "\-\- etldoc:" | sed 's/-- etldoc://g' >>$DOT
echo "
}
" >> $DOT
cat $DOT
dot -Tpng $DOT > layer_${ID}_etl.png