config/srclist-update

   1 #!/bin/sh
   2 # Check for files in directory $1 being up to date, according to the
   3 # list on stdin.  Don't actually make any changes, just show the diffs.
   4 #
   5 # Copyright (C) 2002-2003, 2005, 2007-2011 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 # Originally written by Karl Berry.
  21
  22
  23 if test -n "$1"; then
  24   cd "$1" || exit 1
  25 fi
  26
  27 verbose=false
  28 #chicken="echo (would)"
  29
  30 : ${TMPDIR=/tmp}
  31 dsttmp=$TMPDIR/srclist.dst
  32
  33 # Source `dirname $0`/srclistvars.sh first, if it exists.
  34 mydir=`dirname $0`
  35 test -r $mydir/srclistvars.sh && . $mydir/srclistvars.sh
  36
  37
  38 # \f
  39 # sed command to fix the license to be GPL.
  40 fixlicense='
  41   /^[[:space:]]*#[[:space:]]*Th[ei][ s].* is free software/,/^[[:space:]]*#.*USA\./c\
  42 #   This program is free software: you can redistribute it and/or modify\
  43 #   it under the terms of the GNU General Public License as published by\
  44 #   the Free Software Foundation; either version 3 of the License, or\
  45 #   (at your option) any later version.\
  46 #\
  47 #   This program is distributed in the hope that it will be useful,\
  48 #   but WITHOUT ANY WARRANTY; without even the implied warranty of\
  49 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\
  50 #   GNU General Public License for more details.\
  51 #\
  52 #   You should have received a copy of the GNU General Public License\
  53 #   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  54
  55   /Th[ei][ s].* is free software/,/\*\//c\
  56    This program is free software: you can redistribute it and/or modify\
  57    it under the terms of the GNU General Public License as published by\
  58    the Free Software Foundation; either version 3 of the License, or\
  59    (at your option) any later version.\
  60 \
  61    This program is distributed in the hope that it will be useful,\
  62    but WITHOUT ANY WARRANTY; without even the implied warranty of\
  63    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\
  64    GNU General Public License for more details.\
  65 \
  66    You should have received a copy of the GNU General Public License\
  67    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  68 '
  69
  70 # sed command to remove lines containing $Id lines.
  71 # Quote the $ so that CVS does not expand it in this script.
  72 remove_id_lines='/[$]Id:.*[$]/d'
  73
  74 # $1 is input file, $2 is output.
  75 # Remove $Id lines, since they'll differ between source locations.
  76 # If $options contains "gpl", change the license to be the standard
  77 # GPL.  We use this for libc files, et al.
  78 #
  79 fixfile() \
  80 {
  81   sed_command="$remove_id_lines"
  82
  83   case " $options " in
  84   *' gpl '*)
  85     sed_command="$sed_command; $fixlicense";;
  86   esac
  87
  88   sed "$sed_command" $1 >$2
  89 }
  90
  91
  92 # \f
  93 cat | while read src dst options; do
  94   #echo "src=$src, dst=$dst, options=$options" >&2
  95   case $src:$dst in
  96     *: ) continue;;    # skip lines without second element
  97     '#'* ) continue;;  # skip comment-only lines
  98   esac
  99
 100   # Expand variables and make sure we have an input file.
 101   eval src=$src
 102   if test ! -r $src; then
 103     echo "$0: cannot read $src" >&2
 104     continue
 105   fi
 106
 107   # Ignore subdirs in src dir.  E.g., if input spec is
 108   #   src/subdir/foo.c dst
 109   # then write destination file dst/foo.c.
 110   eval dst=$dst
 111   test -d $dst && dst=$dst/`basename $src`
 112
 113   # Fix files in both src and dst, for the sake
 114   # of a clean comparison.
 115   srctmp=$TMPDIR/`basename $src`
 116   fixfile $src $srctmp
 117   test -r $dst && fixfile $dst $dsttmp
 118
 119   # if src was executable, make dst executable, to placate git.
 120   test -x $src && chmod a+x $dst
 121
 122   if test ! -e $dst; then
 123     echo "## $srctmp $dst  # new"
 124     $chicken cp -p $srctmp $dst
 125   elif cmp -s $srctmp $dsttmp; then
 126     $verbose && echo "## $srctmp $dst  # unchanged"
 127   else
 128     echo "## $srctmp $dst  # changes"
 129     diff -C 2 $dst $srctmp
 130   fi
 131 done
 132
 133 rm -f $dsttmp