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#!/bin/bash
# Downloads zoneinfo files if not already present
# echos 2 lines,
# - the directory with the zoneinfo files
# - the names of the zoneinfo files to be parsed
CACHE_DIR=${CACHE_DIR:-~/.cache/calp}
RELEASE=2020a
TZ_SRC="https://github.com/eggert/tz/archive/$RELEASE.tar.gz"
mkdir -p $CACHE_DIR
cd $CACHE_DIR
test -f "$RELEASE.tar.gz" || curl -sOL $TZ_SRC
test -d "tz-$RELEASE" || tar xzf "$RELEASE.tar.gz"
cd "tz-$RELEASE"
tzpath=$(pwd)
size=$(stat -c "%s" Makefile)
cat >> Makefile << EOF
.PHONY: print-tdata
print-tdata:
@echo \$(TDATA_TO_CHECK)
EOF
files=$(make print-tdata)
truncate -cs $size Makefile
echo $tzpath
echo $files
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