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#!/bin/sh
set -e
# debugging if anything fails is tricky as dh-golang eats up all output
# uncomment the lines below to get a useful trace if you have to touch
# this again (my advice is: DON'T)
#set -x
#logfile=/tmp/mkversions.log
#exec >> $logfile 2>&1
#echo "env: $(set)"
#echo "mkversion.sh run from: $0"
#echo "pwd: $(pwd)"
# we have two directories we need to care about:
# - our toplevel pkg builddir which is where "mkversion.sh" is located
# and where "snap-confine" expects its cmd/VERSION file
# - the GO_GENERATE_BUILDDIR which may be the toplevel pkg dir. but
# during "dpkg-buildpackage" it will become a different _build/ dir
# that dh-golang creates and that only contains a subset of the
# files of the toplevel buildir.
PKG_BUILDDIR=$(dirname "$0")
GO_GENERATE_BUILDDIR="$(pwd)"
# run from "go generate" adjust path
if [ "$GOPACKAGE" = "cmd" ]; then
GO_GENERATE_BUILDDIR="$(pwd)/.."
fi
OUTPUT_ONLY=false
if [ "$1" = "--output-only" ]; then
OUTPUT_ONLY=true
shift
fi
# If the version is passed in as an argument to mkversion.sh, let's use that.
if [ -n "$1" ]; then
v="$1"
o=shell
fi
if [ -z "$v" ]; then
# Let's try to derive the version from git..
if command -v git >/dev/null; then
# not using "--dirty" here until the following bug is fixed:
# https://bugs.launchpad.net/snapcraft/+bug/1662388
v="$(git describe --always | sed -e 's/-/+git/;y/-/./' )"
o=git
fi
fi
if [ -z "$v" ]; then
# at this point we maybe in _build/src/github etc where we have no
# debian/changelog (dh-golang only exports the sources here)
# switch to the real source dir for the changelog parsing
v="$(cd "$PKG_BUILDDIR"; dpkg-parsechangelog --show-field Version)";
o=debian/changelog
fi
if [ -z "$v" ]; then
exit 1
fi
if [ "$OUTPUT_ONLY" = true ]; then
echo "$v"
exit 0
fi
echo "*** Setting version to '$v' from $o." >&2
cat <<EOF > "$GO_GENERATE_BUILDDIR/cmd/version_generated.go"
package cmd
// generated by mkversion.sh; do not edit
func init() {
Version = "$v"
}
EOF
cat <<EOF > "$PKG_BUILDDIR/cmd/VERSION"
$v
EOF
cat <<EOF > "$PKG_BUILDDIR/data/info"
VERSION=$v
EOF
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