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118 lines
4.0 KiB
118 lines
4.0 KiB
#!/bin/bash
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#=========================================================================
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# vcs-version.sh [options] [src-dir]
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#=========================================================================
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#
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# -h Display this message
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# -v Verbose mode
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#
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# This script will create a version string by querying a version control
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# system. The string is appropriate for use in installations and
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# distributions. Currently this script assumes we are using git as our
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# version control system but it would be possible to check and see if we
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# are using an alternative version control system and create a version
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# string appropriately.
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#
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# The script uses git describe plus a few other git commands to create a
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# version strings in the following format:
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#
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# X.Y[-Z-gN][-dirty]
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#
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# where X is the major release, Y is the minor release, Z is the number
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# of commits since the X.Y release, N is an eight digit abbreviated SHA
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# hash of the most recent commit and the dirty suffix is appended when
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# the working directory used to create the installation or distribution
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# is not a pristine checkout. Here are some example version strings:
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#
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# 0.0 : initial import
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# 0.0-3-g99ef6933 : 3rd commit since initial import (N=99ef6933)
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# 1.0 : release 1.0
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# 1.1-12-g3487ab12 : 12th commit since release 1.1 (N=3487ab12)
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# 1.1-12-g3487ab12-dirty : 12th commit since release 1.1 (N=3487ab12)
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#
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# The last example is from a dirty working directory. To find the last
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# release, the script looks for the last tag (does not need to be an
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# annotated tag, but probably should be) which matches the format rel-*.
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# If there is no such tag in the history, then the script uses 0.0 as
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# the release number and counts the total number of commits since the
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# original import for the commit count.
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#
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# If the current directory is not within the working directory, then the
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# path to the source directory should be supplied on the command line.
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#
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# Author : Christopher Batten
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# Date : August 5, 2009
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set -e
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#-------------------------------------------------------------------------
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# Command line parsing
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#-------------------------------------------------------------------------
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if ( test "$1" = "-h" ); then
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echo ""
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sed -n '3p' $0 | sed -e 's/#//'
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sed -n '5,/^$/p' $0 | sed -e 's/#//'
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exit 1
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fi
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# Source directory command line option
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src_dir="."
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if ( test -n "$1" ); then
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src_dir="$1"
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fi
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#-------------------------------------------------------------------------
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# Verify source directory
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#-------------------------------------------------------------------------
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# If the source directory is not a git working directory output a
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# question mark. A distribution will not be in a working directory, but
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# the build system should be structured such that this script is not
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# executed (and instead the version information should probably come
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# from configure). If the user does not specify a source directory use
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# the current directory.
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if !( git rev-parse --is-inside-work-tree &> /dev/null ); then
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echo "?"
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exit 1;
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fi
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top_dir=`git rev-parse --show-cdup`
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cd ./${top_dir}
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#-------------------------------------------------------------------------
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# Create the version string
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#-------------------------------------------------------------------------
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# See if we can do a describe based on a tag and if not use a default
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# release number of 0.0 so that we always get canonical version number
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if ( git describe --tags --match "rel-*" &> /dev/null ); then
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ver_str=`git describe --tags --match "rel-*" | sed 's/rel-//'`
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else
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ver_num="0.0"
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ver_commits=`git rev-list --all | wc -l | tr -d " "`
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ver_sha=`git describe --tags --match "rel-*" --always`
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ver_str="${ver_num}-${ver_commits}-g${ver_sha}"
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fi
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# Add a dirty suffix if working directory is dirty
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if !( git diff --quiet ); then
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ver_str="${ver_str}-dirty"
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else
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untracked=`git ls-files --directory --exclude-standard --others -t`
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if ( test -n "${untracked}" ); then
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ver_str="${ver_str}-dirty"
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fi
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fi
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# Output the final version string
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echo "${ver_str}"
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# Final exit status
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exit 0;
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