#! /bin/sh
#
# Copyright (C) 2002 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#

# This file is meant for authors, maintainers, co-maintainers or installers
# of packages which are internationalized with the help of GNU gettext.  For
# further information how to use it consult the GNU gettext manual.

progname=$0
package=gettext
version=0.11.5

# func_usage
# outputs to stdout the --help usage message.
func_usage ()
{
  echo "\
Usage: autopoint [OPTION]...

Copies standard gettext infrastructure files into a source package.

Options:
      --help           print this help and exit
      --version        print version information and exit
  -f, --force          force overwriting of files that already exist
  -n, --dry-run        print modifications but don't perform them"
#  echo "\
#  -V version           copy the infrastructure of the specified gettext version
#                         (dangerous)"
  echo "
Report bugs to <bug-gnu-gettext@gnu.org>."
}

# func_version
# outputs to stdout the --version message.
func_version ()
{
  echo "$progname (GNU $package) $version"
  echo "Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
  echo "Written by" "Bruno Haible"
}

# func_fatal_error message
# outputs to stderr a fatal error message, and terminates the program.
func_fatal_error ()
{
  echo "autopoint: *** $1" 1>&2
  echo "autopoint: *** Stop." 1>&2
  exit 1
}

# Command-line option processing.
# Removes the OPTIONS from the arguments. Sets the variables:
# - force           yes if --force was given, empty otherwise
# - ver             gettext version if -V was given, empty otherwise
# - doit            false if --dry-run was given, : otherwise
{
  force=
  ver=
  doit=:

  while test $# -gt 0; do
    case "$1" in
      -n | --dry-run | --dry-ru | --dry-r | --dry- | --dry | --dr | --d )
        shift
        doit=false ;;
      -f | --force | --forc | --for | --fo | --f )
        shift
        force=yes ;;
      --help | --hel | --he | --h )
        func_usage; exit 0 ;;
#      -V ) # Some people put a space between -V and the version number.
#        shift
#        if test $# = 0; then
#          func_usage 1>&2
#          exit 1
#        fi
#        ver=$1;
#        shift ;;
#      -V*) # Some people omit the space between -V and the version number.
#        ver=`echo "X$1" | sed -e 's/^X-V//'`
#        shift ;;
      --version | --versio | --versi | --vers | --ver | --ve | --v )
        func_version
        exit 0 ;;
      -- ) # Stop option prcessing
        shift; break ;;
      -* )
        echo "autopoint: unknown option $1" 1>&2
        echo "Try 'autopoint --help' for more information." 1>&2
        exit 1 ;;
      * )
        break ;;
    esac
  done
}

# Command-line argument processing.
# Analyzes the remaining arguments.
{
  if test $# -gt 0; then
    func_usage 1>&2
    exit 1
  fi
}

srcdir=`pwd`
# The current directory is now $srcdir.

# Check integrity of package: A configure.in/ac must be present. Sets variable
# - configure_in    name of configure.in/ac file.
if test -f configure.in; then
  configure_in=configure.in
else
  if test -f configure.ac; then
    configure_in=configure.ac
  else
    func_fatal_error "Missing configure.in or configure.ac, please cd to your package first."
  fi
fi

# Check whether the -V option and the version number in configure.in match.
# At least one of the two must be given. If both are given, they must agree.
xver=`cat "$configure_in" | grep '^AM_GNU_GETTEXT_VERSION(' | sed -e 's/^AM_GNU_GETTEXT_VERSION(\([^()]*\))/\1/p' | sed -e 's/^\[\(.*\)\]$/\1/' | sed -e 1q`
if test -z "$xver" && test -f intl/VERSION; then
  xver=`cat intl/VERSION | sed -n -e 's/^.*gettext-\(-+_.0-9A-Za-z]*\).*$/\1/p'`
fi
if test -n "$xver"; then
  if test -n "$ver"; then
    if test "X$ver" != "X$xver"; then
      func_fatal_error "Version mismatch: specified -V $ver but the package uses gettext version $xver"
    fi
  else
    ver="$xver"
  fi
else
  if test -z "$ver"; then
    func_fatal_error "Missing version: please specify in $configure_in through a line 'AM_GNU_GETTEXT_VERSION(x.yy.zz)' the gettext version the package is using"
  fi
fi

# We distribute the many different versions of the files in a CVS repository.
# This guarantees a good compression rate:
#
#   Including version    size in KB of
#                       "du autopoint-files/archive"
#      0.10.35                  240
#      0.10.36                  428
#      0.10.37                  436
#      0.10.38                  488
#      0.10.39                  500
#      0.10.40                  528
#      0.11                     720
#      0.11.1                   740
#      0.11.2                   748
#      0.11.3                   804
#      0.11.4                   864
#      0.11.5                   880
#
# The requirement that the user must have the CVS program available is not
# a severe restrictions, because most of the people who use autopoint are
# users of CVS.
#
# Check availability of the CVS program.
(cvs -v) >/dev/null 2>/dev/null || func_fatal_error "cvs program not found"

# Check in which directory config.rpath, mkinstalldirs etc. belong.
auxdir=`cat "$configure_in" | grep '^AC_CONFIG_AUX_DIR' | sed -n -e 's/AC_CONFIG_AUX_DIR(\([^()]*\))/\1/p' | sed -e 's/^\[\(.*\)\]$/\1/' | sed -e 1q`
if test -n "$auxdir"; then
  auxdir="$auxdir/"
fi

# Check in which directory the *.m4 macros belong.
m4dir=m4
if test -f Makefile.am; then
  # A package using automake.
  # Extract the macro directory name from Makefile.am.
  aclocal_amflags=`grep '^ACLOCAL_AMFLAGS[ 	]*=' Makefile.am | sed -e 's/^ACLOCAL_AMFLAGS[ 	]*=\(.*\)$/\1/'`
  m4dir_is_next=
  for arg in $aclocal_amflags; do
    if test -n "$m4dir_is_next"; then
      m4dir="$arg"
      break
    else
      if test "X$arg" = "X-I"; then
        m4dir_is_next=yes
      else
        m4dir_is_next=
      fi
    fi
  done
fi

# Check whether to omit the intl/ directory.
omitintl=`cat "$configure_in" | grep '^AM_GNU_GETTEXT' | sed -n -e 's/^AM_GNU_GETTEXT(\([^(),]*\).*$/\1/p' | sed -e 's/^\[\(.*\)\]$/\1/' | sed -e 1q`
omitintl=`if test 'external' = "$omitintl"; then echo yes; fi`

# Set variables
# - gettext_dir     directory where the sources are stored.
prefix="/usr/pkg"
gettext_dir="${prefix}/share/gettext"

# Set up a temporary CVS repository and a temporary checkout directory.
# We need the temporary CVS repository because any checkout needs write
# access to the CVSROOT/history file, so it cannot be under $gettext_dir.
# We need the temporary checkout directory because when --force was not
# given, we need to compare the existing files with the checked out ones.
# Set variables
# - cvs_dir         directory containing the temporary repository
# - work_dir        directory containing the temporary checkout
cvs_dir=tmpcvs$$
work_dir=tmpwrk$$
mkdir "$cvs_dir"
mkdir "$work_dir"
CVSROOT="$srcdir/$cvs_dir"
export CVSROOT
unset CVS_CLIENT_LOG
unset CVS_CLIENT_PORT
unset CVS_IGNORE_REMOTE_ROOT
unset CVS_PASSFILE
unset CVS_PASSWORD
unset CVS_RCMD_PORT
unset CVS_RSH
unset CVS_SERVER
unset CVS_SERVER_SLEEP
unset CVSIGNORE
unset CVSREAD
unset CVSUMASK
unset CVSWRAPPERS

# Need to pass -d "$CVSROOT", because there may be a CVS directory in the
# current directory.
cvs -d "$CVSROOT" init
gzip -d -c < "$gettext_dir/archive.tar.gz" | (cd "$cvs_dir" && tar xf -)

cd "$work_dir"
cvsver=gettext-`echo "$ver" | sed -e 's/\./_/g'`
(cvs checkout -r"$cvsver" archive > /dev/null) 2>&1 | grep -v '^cvs checkout: Updating'
find archive -name CVS -type d -print | xargs rm -rf
if test `find archive -type f -print | wc -l` = 0; then
  cd ..
  rm -rf "$cvs_dir" "$work_dir"
  fatal_error "infrastructure files for version $ver not found; this is autopoint from GNU $package $version"
fi
cd ..

# func_destfile file
# determines the destination file, relative to the package's top level
# directory, for a given file name, relative to archive.
# Sets variable
# - destfile        relative destination file name, or
#                   empty if the file shall be omitted
func_destfile ()
{
  # There are five categories of files:
  # ABOUT_NLS -> top level directory
  # config.rpath mkinstalldirs -> $auxdir
  # m4/* -> $m4dir/
  # intl/* -> intl/
  # po/* -> po/
  case `echo "$1" | sed -e 's,[^/]*$,,'` in
    "" )
      case "$1" in
        config.rpath | mkinstalldirs ) destfile="$auxdir$1" ;;
        * ) destfile="$1" ;;
      esac
      ;;
    m4/ ) destfile=`echo "$1" | sed -e "s,^m4/,$m4dir/,"` ;;
    intl/ ) if test -n "$omitintl"; then destfile=""; else destfile="$1"; fi ;;
    * ) destfile="$1" ;;
  esac
}

# If some files have been locally modified and we have not been requested
# to overwrite them, then bail out. This is better than leaving a source
# package around where half of the files are locally modified and half are
# original - too great risk of version mismatch.
if test -z "$force"; then
  mismatch=
  for file in `find "$work_dir/archive" -type f -print | sed -e "s,^$work_dir/archive/,," | LC_ALL=C sort`; do
    func_destfile "$file"
    if test -n "$destfile"; then
      if test -f "$destfile"; then
        if cmp -s "$work_dir/archive/$file" "$destfile"; then
          :
        else
          echo "autopoint: File $destfile has been locally modified."
          mismatch=yes
        fi
      fi
    fi
  done
  if test -n "$mismatch"; then
    rm -rf "$cvs_dir" "$work_dir"
    func_fatal_error "Some files have been locally modified. Not overwriting them because --force has not been specified."
  fi
fi

# func_mkdir_for to
# ensures the directory that would the given file exists.
# 'to' is a relative pathname, relative to the current directory.
func_mkdir_for ()
{
  base=`echo "$1" | sed -e 's,/[^/]*$,,'`
  if test "X$base" != "X$1" && test -n "$base"; then
    func_mkdir_for "$base"
    # Recompute base. It was clobbered by the recursive call.
    base=`echo "$1" | sed -e 's,/[^/]*$,,'`
    test -d "$base" || { echo "Creating directory $base"; mkdir "$base"; }
  fi
}

# func_copy from to
# copies a file.
# 'from' is a relative pathname, relative to the current directory.
# 'to' is a relative pathname, relative to the current directory.
func_copy ()
{
  if $doit; then
    func_mkdir_for "$2"
    rm -f "$2"
    echo "Copying file $2"
    cp "$1" "$2"
  else
    echo "Copy file $2"
  fi
}

# func_backup to
# makes a backup of a file that is about to be overwritten or replaced.
# 'to' is a relative pathname, relative to the current directory.
func_backup ()
{
  if $doit; then
    if test -f "$1"; then
      rm -f "$1~"
      cp -p "$1" "$1~"
    fi
  fi
}

# Now copy the files.
for file in `find "$work_dir/archive" -type f -print | sed -e "s,^$work_dir/archive/,," | LC_ALL=C sort`; do
  func_destfile "$file"
  mustcopy=
  if test -n "$destfile"; then
    if test -f "$destfile"; then
      if cmp -s "$work_dir/archive/$file" "$destfile"; then
        :
      else
        # Overwrite locally modified file.
        mustcopy=yes
      fi
    else
      mustcopy=yes
    fi
  fi
  if test -n "$mustcopy"; then
    func_backup "$destfile"
    func_copy "$work_dir/archive/$file" "$destfile"
  fi
done

# That's it.
rm -rf "$cvs_dir" "$work_dir"
exit 0
