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kc3-lang/libbsd/get-version

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  • get-version
  • #!/bin/sh
    #
    # get-version
    #
    # Copyright © 2009 Guillem Jover <guillem@hadrons.org>
    #
    # Redistribution and use in source and binary forms, with or without
    # modification, are permitted provided that the following conditions
    # are met:
    # 1. Redistributions of source code must retain the above copyright
    #    notice, this list of conditions and the following disclaimer.
    # 2. Redistributions in binary form must reproduce the above copyright
    #    notice, this list of conditions and the following disclaimer in the
    #    documentation and/or other materials provided with the distribution.
    # 3. The name of the author may not be used to endorse or promote products
    #    derived from this software without specific prior written permission.
    #
    # THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
    # INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
    # AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
    # THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
    # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
    # PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
    # OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
    # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
    # OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
    # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    
    if [ -f .dist-version ]; then
      # Get the version from the file distributed in the tarball.
      version=$(cat .dist-version)
    else
      # Ger the version from the git repository.
      version=$(git describe --abbrev=4 HEAD 2>/dev/null)
    
      # Check if we are on a dirty checkout.
      git update-index --refresh -q >/dev/null
      dirty=$(git diff-index --name-only HEAD 2>/dev/null)
      if [ -n "$dirty" ]; then
        version="$version-dirty"
      fi
    fi
    
    # Use printf to avoid the trailing new line that m4_esyscmd would not handle.
    printf "$version"