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mtr ver 0.92

    1: #!/bin/sh
    2: # Print a version string.
    3: scriptversion=2016-05-08.18; # UTC
    4: 
    5: # Copyright (C) 2007-2016 Free Software Foundation, Inc.
    6: #
    7: # This program is free software: you can redistribute it and/or modify
    8: # it under the terms of the GNU General Public License as published by
    9: # the Free Software Foundation; either version 3 of the License, or
   10: # (at your option) any later version.
   11: #
   12: # This program is distributed in the hope that it will be useful,
   13: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   14: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   15: # GNU General Public License for more details.
   16: #
   17: # You should have received a copy of the GNU General Public License
   18: # along with this program.  If not, see <http://www.gnu.org/licenses/>.
   19: 
   20: # This script is derived from GIT-VERSION-GEN from GIT: http://git.or.cz/.
   21: # It may be run two ways:
   22: # - from a git repository in which the "git describe" command below
   23: #   produces useful output (thus requiring at least one signed tag)
   24: # - from a non-git-repo directory containing a .tarball-version file, which
   25: #   presumes this script is invoked like "./git-version-gen .tarball-version".
   26: 
   27: # In order to use intra-version strings in your project, you will need two
   28: # separate generated version string files:
   29: #
   30: # .tarball-version - present only in a distribution tarball, and not in
   31: #   a checked-out repository.  Created with contents that were learned at
   32: #   the last time autoconf was run, and used by git-version-gen.  Must not
   33: #   be present in either $(srcdir) or $(builddir) for git-version-gen to
   34: #   give accurate answers during normal development with a checked out tree,
   35: #   but must be present in a tarball when there is no version control system.
   36: #   Therefore, it cannot be used in any dependencies.  GNUmakefile has
   37: #   hooks to force a reconfigure at distribution time to get the value
   38: #   correct, without penalizing normal development with extra reconfigures.
   39: #
   40: # .version - present in a checked-out repository and in a distribution
   41: #   tarball.  Usable in dependencies, particularly for files that don't
   42: #   want to depend on config.h but do want to track version changes.
   43: #   Delete this file prior to any autoconf run where you want to rebuild
   44: #   files to pick up a version string change; and leave it stale to
   45: #   minimize rebuild time after unrelated changes to configure sources.
   46: #
   47: # As with any generated file in a VC'd directory, you should add
   48: # /.version to .gitignore, so that you don't accidentally commit it.
   49: # .tarball-version is never generated in a VC'd directory, so needn't
   50: # be listed there.
   51: #
   52: # Use the following line in your configure.ac, so that $(VERSION) will
   53: # automatically be up-to-date each time configure is run (and note that
   54: # since configure.ac no longer includes a version string, Makefile rules
   55: # should not depend on configure.ac for version updates).
   56: #
   57: # AC_INIT([GNU project],
   58: #         m4_esyscmd([build-aux/git-version-gen .tarball-version]),
   59: #         [bug-project@example])
   60: #
   61: # Then use the following lines in your Makefile.am, so that .version
   62: # will be present for dependencies, and so that .version and
   63: # .tarball-version will exist in distribution tarballs.
   64: #
   65: # EXTRA_DIST = $(top_srcdir)/.version
   66: # BUILT_SOURCES = $(top_srcdir)/.version
   67: # $(top_srcdir)/.version:
   68: #	echo $(VERSION) > $@-t && mv $@-t $@
   69: # dist-hook:
   70: #	echo $(VERSION) > $(distdir)/.tarball-version
   71: 
   72: 
   73: me=$0
   74: 
   75: version="git-version-gen $scriptversion
   76: 
   77: Copyright 2011 Free Software Foundation, Inc.
   78: There is NO warranty.  You may redistribute this software
   79: under the terms of the GNU General Public License.
   80: For more information about these matters, see the files named COPYING."
   81: 
   82: usage="\
   83: Usage: $me [OPTION]... \$srcdir/.tarball-version [TAG-NORMALIZATION-SED-SCRIPT]
   84: Print a version string.
   85: 
   86: Options:
   87: 
   88:    --prefix PREFIX    prefix of git tags (default 'v')
   89:    --fallback VERSION
   90:                       fallback version to use if \"git --version\" fails
   91: 
   92:    --help             display this help and exit
   93:    --version          output version information and exit
   94: 
   95: Running without arguments will suffice in most cases."
   96: 
   97: prefix=v
   98: fallback=
   99: 
  100: while test $# -gt 0; do
  101:   case $1 in
  102:     --help) echo "$usage"; exit 0;;
  103:     --version) echo "$version"; exit 0;;
  104:     --prefix) shift; prefix=${1?};;
  105:     --fallback) shift; fallback=${1?};;
  106:     -*)
  107:       echo "$0: Unknown option '$1'." >&2
  108:       echo "$0: Try '--help' for more information." >&2
  109:       exit 1;;
  110:     *)
  111:       if test "x$tarball_version_file" = x; then
  112:         tarball_version_file="$1"
  113:       elif test "x$tag_sed_script" = x; then
  114:         tag_sed_script="$1"
  115:       else
  116:         echo "$0: extra non-option argument '$1'." >&2
  117:         exit 1
  118:       fi;;
  119:   esac
  120:   shift
  121: done
  122: 
  123: if test "x$tarball_version_file" = x; then
  124:     echo "$usage"
  125:     exit 1
  126: fi
  127: 
  128: tag_sed_script="${tag_sed_script:-s/x/x/}"
  129: 
  130: nl='
  131: '
  132: 
  133: # Avoid meddling by environment variable of the same name.
  134: v=
  135: v_from_git=
  136: 
  137: # First see if there is a tarball-only version file.
  138: # then try "git describe", then default.
  139: if test -f $tarball_version_file
  140: then
  141:     v=`cat $tarball_version_file` || v=
  142:     case $v in
  143:         *$nl*) v= ;; # reject multi-line output
  144:         [0-9]*) ;;
  145:         *) v= ;;
  146:     esac
  147:     test "x$v" = x \
  148:         && echo "$0: WARNING: $tarball_version_file is missing or damaged" 1>&2
  149: fi
  150: 
  151: if test "x$v" != x
  152: then
  153:     : # use $v
  154: # Otherwise, if there is at least one git commit involving the working
  155: # directory, and "git describe" output looks sensible, use that to
  156: # derive a version string.
  157: elif test "`git log -1 --pretty=format:x . 2>&1`" = x \
  158:     && v=`git describe --abbrev=4 --match="$prefix*" HEAD 2>/dev/null \
  159:           || git describe --abbrev=4 HEAD 2>/dev/null` \
  160:     && v=`printf '%s\n' "$v" | sed "$tag_sed_script"` \
  161:     && case $v in
  162:          $prefix[0-9]*) ;;
  163:          *) (exit 1) ;;
  164:        esac
  165: then
  166:     # Is this a new git that lists number of commits since the last
  167:     # tag or the previous older version that did not?
  168:     #   Newer: v6.10-77-g0f8faeb
  169:     #   Older: v6.10-g0f8faeb
  170:     case $v in
  171:         *-*-*) : git describe is okay three part flavor ;;
  172:         *-*)
  173:             : git describe is older two part flavor
  174:             # Recreate the number of commits and rewrite such that the
  175:             # result is the same as if we were using the newer version
  176:             # of git describe.
  177:             vtag=`echo "$v" | sed 's/-.*//'`
  178:             commit_list=`git rev-list "$vtag"..HEAD 2>/dev/null` \
  179:                 || { commit_list=failed;
  180:                      echo "$0: WARNING: git rev-list failed" 1>&2; }
  181:             numcommits=`echo "$commit_list" | wc -l`
  182:             v=`echo "$v" | sed "s/\(.*\)-\(.*\)/\1-$numcommits-\2/"`;
  183:             test "$commit_list" = failed && v=UNKNOWN
  184:             ;;
  185:     esac
  186: 
  187:     # Change the first '-' to a '.', so version-comparing tools work properly.
  188:     # Remove the "g" in git describe's output string, to save a byte.
  189:     v=`echo "$v" | sed 's/-/./;s/\(.*\)-g/\1-/'`;
  190:     v_from_git=1
  191: elif test "x$fallback" = x || git --version >/dev/null 2>&1; then
  192:     v=UNKNOWN
  193: else
  194:     v=$fallback
  195: fi
  196: 
  197: v=`echo "$v" |sed "s/^$prefix//"`
  198: 
  199: # Test whether to append the "-dirty" suffix only if the version
  200: # string we're using came from git.  I.e., skip the test if it's "UNKNOWN"
  201: # or if it came from .tarball-version.
  202: if test "x$v_from_git" != x; then
  203:   # Don't declare a version "dirty" merely because a time stamp has changed.
  204:   git update-index --refresh > /dev/null 2>&1
  205: 
  206:   dirty=`exec 2>/dev/null;git diff-index --name-only HEAD` || dirty=
  207:   case "$dirty" in
  208:       '') ;;
  209:       *) # Append the suffix only if there isn't one already.
  210:           case $v in
  211:             *-dirty) ;;
  212:             *) v="$v-dirty" ;;
  213:           esac ;;
  214:   esac
  215: fi
  216: 
  217: # Omit the trailing newline, so that m4_esyscmd can use the result directly.
  218: printf %s "$v"
  219: 
  220: # Local variables:
  221: # eval: (add-hook 'write-file-hooks 'time-stamp)
  222: # time-stamp-start: "scriptversion="
  223: # time-stamp-format: "%:y-%02m-%02d.%02H"
  224: # time-stamp-time-zone: "UTC0"
  225: # time-stamp-end: "; # UTC"
  226: # End: