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|
#!/bin/sh
set -eu
rootdir=`dirname "$0"`/..
prog=`basename "$0"`
print_usage() {
cat <<END
Usage:
$prog [options..]
Options:
-h, --help print this information
-C <path>, --dir <path> use <path> as the reference directory
-r, --raw raw output (default)
-c, --c C output
-t, --tex TeX output
-v, --only-version only-version output
-o <file>, --output <file> output to <file>
--date-format <format> date format (default: '%b %e %Y')
END
}
# Format the date given in the form of '%Y-%m-%d %H:%M:%S %z'.
# fmt_isodate <isodate> <format>
fmt_isodate() {
# dash (0.5.5.1) needs the following exports.
export LANG
export TZ
# BSD date
date -j -f '%Y-%m-%d %H:%M:%S %z' "$1" +"$2" 2>/dev/null ||
# GNU date
date -d "$1" +"$2" 2>/dev/null ||
# perl Time::Piece
# XXX: It has problems on the time zone.
perl -MTime::Piece <<END 2>/dev/null ||
print Time::Piece->strptime('$1', '%Y-%m-%d %H:%M:%S %z')->strftime('$2')
END
# Failed.
{
echo "$prog: error: failed to format datetime ($1)" >&2
echo "$prog: info: GNU/BSD date not available?" >&2
false
}
}
refdir=$rootdir
mode=raw
output_file=
date_format='%b %e %Y'
next=
for a in "$@"; do
if [ -n "$next" ]; then
eval "$next=\$a"
next=
continue
fi
case $a in
-h|--help)
print_usage
exit
;;
-C|--dir)
next=refdir
;;
-r|--raw)
mode=raw
;;
-c|--c)
mode=c
;;
-t|--tex)
mode=tex
;;
-v|--only-version)
mode=only-version
;;
-o|--output)
next=output_file
;;
--date-format)
next=date_format
;;
*)
echo "$prog: error: unknown option $a" >&2
exit 1
;;
esac
done
if [ -n "$next" ]; then
echo "$prog: error: missing argument for $a" >&2
exit 1
fi
git_C() {
(cd "$refdir" && git "$@")
}
# Extract the version number from the latest tag, e.g.,
# v1.0.0-xxx-yyy-zzz -> 1.0.0
version_tag=`git_C describe --match 'v[0-9]*' --tags HEAD`
version_tmp=`echo "$version_tag" | sed 's/^v//'`
version_num=`echo "$version_tmp" | sed 's/-.*//'`
version=$version_num
# Support typical pre-release versions (e.g., v1.0.0-alpha-xxx-yyy-zzz) for
# -alpha, -alpha.1, -beta, -beta.1, -rc, -rc.1
case $version_tmp in
*-alpha*|*-beta*|*-rc*)
version_tmp=`echo "$version_tmp" | sed 's/^[^-]*-//' | sed 's/-.*//'`
case $version_tmp in
alpha*|beta*|rc*)
version="$version-$version_tmp"
;;
esac
;;
esac
if [ "$mode" != "only-version" ]; then
# Get the revision identifier by git-describe.
revision=`git_C describe --tags --always --abbrev=7 HEAD`
# Check if the working tree is dirty.
git_C update-index -q --refresh
if git_C diff-index --quiet HEAD .; then
# If the working tree is not dirty, use the latest commit date.
isodate=`git_C log -1 --pretty=%ci .`
date=`LANG=C TZ=UTC fmt_isodate "$isodate" "$date_format"`
else
# If the working tree is dirty, suffix "-dirty" to the revision identifier
# and use the current date time.
revision="$revision-dirty"
date=`LANG=C TZ=UTC date +"$date_format"`
fi
# Extract MAJOR.MINOR.PATCH from the version number.
major_version=`expr "$version_num" : '\([0-9]\+\)' || :`
version_num=`expr "$version_num" : '[0-9]\+\.\?\(.*\)' || :`
minor_version=`expr "$version_num" : '\([0-9]\+\)' || :`
version_num=`expr "$version_num" : '[0-9]\+\.\?\(.*\)' || :`
patch_version=`expr "$version_num" : '\([0-9]\+\)' || :`
[ -z "$major_version" ] && major_version=0
[ -z "$minor_version" ] && minor_version=0
[ -z "$patch_version" ] && patch_version=0
fi
print_versions() {
case $mode in
raw)
cat <<END
$version
$revision
$date
$major_version
$minor_version
$patch_version
END
;;
c)
cat <<END
#define REPO_VERSION "$version"
#define REPO_REVISION "$revision"
#define REPO_DATE "$date"
#define REPO_MAJOR_VERSION $major_version
#define REPO_MINOR_VERSION $minor_version
#define REPO_PATCH_VERSION $patch_version
END
;;
tex)
cat <<END
\def\repoversion{$version}
\def\reporevision{$revision}
\def\repodate{$date}
\def\repomajorversion{$major_version}
\def\repominorversion{$minor_version}
\def\repopatchversion{$patch_version}
END
;;
only-version)
echo "$version"
;;
*)
echo "$prog: internal error: unknown mode $mode" >&2
exit 1
;;
esac
}
say () {
cat <<END
$@
END
}
if [ -z "$output_file" ]; then
# To the standard output.
print_versions
else
# To the output file. Write only if any changes required.
if [ -f "$output_file" ]; then
out=`print_versions`
# NOTE: using echo instead of say at the next line may have problems
# for --tex. POSIX says echo should process '\\', but some shells
# don't without -e option. Here we shouldn't process them.
say "$out" | cmp -s "$output_file" - || say "$out" >"$output_file"
else
print_versions >"$output_file"
fi
fi
|
