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annotate lib-src/vcdiff @ 5406:061f4f90f874

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Convert lib-src/ to GPLv3.
author Mike Sperber <sperber@deinprogramm.de>
date Mon, 18 Oct 2010 14:02:19 +0200
parents 376386a54a3c
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #! /bin/sh
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2
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3 # Enhanced sccs diff utility for use with vc mode.
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4 # This version is more compatible with rcsdiff(1).
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5
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6 # Copyright (C) 1992, 1993, 1995, 1997, 2001, 2002, 2003, 2004, 2005,
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7 # 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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8
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9 # Author: Paul Eggert
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10 # (according to authors.el)
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11
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12 # This file is part of XEmacs.
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13
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14 # XEmacs is free software: you can redistribute it and/or modify
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15 # it under the terms of the GNU General Public License as published by
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16 # the Free Software Foundation, either version 3 of the License, or
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17 # (at your option) any later version.
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18
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19 # XEmacs is distributed in the hope that it will be useful,
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20 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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21 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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22 # GNU General Public License for more details.
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23
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24 # You should have received a copy of the GNU General Public License
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25 # along with XEmacs. If not, see <http://www.gnu.org/licenses/>.
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26
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27
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28 DIFF="diff"
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29 usage="$0: Usage: vcdiff [--brief] [-q] [-r<sid1>] [-r<sid2>] [diffopts] sccsfile..."
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30
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31 # Now that we use `sccs get' rather than just `get', we don't need this.
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32 # PATH=$PATH:/usr/ccs/bin:/usr/sccs:/usr/xpg4/bin # common SCCS hangouts
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33
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34 echo="echo"
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35 sid1= sid2=
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36
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37 for f
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38 do
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39 case $f in
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40 -*)
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41 case $f in
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42 --brief)
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43 DIFF=cmp;;
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44 -q)
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45 echo=:;;
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46 -r?*)
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47 case $sid1 in
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48 '')
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49 sid1=$f
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50 ;;
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51 *)
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52 case $sid2 in
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53 ?*) echo "$usage" >&2; exit 2 ;;
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54 esac
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55 sid2=$f
0
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56 ;;
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57 esac
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58 ;;
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59 *)
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60 options="$options $f"
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61 ;;
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62 esac
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63 shift
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64 ;;
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65 *)
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66 break
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67 ;;
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68 esac
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69 done
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70
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71 case $# in
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72 0)
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73 echo "$usage" >&2
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74 exit 2
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75 esac
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76
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77
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78 rev1= rev2= status=0
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79 trap 'status=2; exit' 1 2 13 15
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80 trap 'rm -f $rev1 $rev2 || status=2; exit $status' 0
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81
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82 for f
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83 do
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84 s=2
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85
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86 case $f in
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87 s.* | */s.*)
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88 if
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89 rev1=`mktemp /tmp/geta.XXXXXXXX`
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90 sccs get -s -p -k $sid1 "$f" > $rev1 &&
0
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91 case $sid2 in
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92 '')
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93 workfile=`expr " /$f" : '.*/s.\(.*\)'`
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94 ;;
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95 *)
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96 rev2=`mktemp /tmp/getb.XXXXXXXX`
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97 sccs get -s -p -k $sid2 "$f" > $rev2
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98 workfile=$rev2
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99 esac
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100 then
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101 $echo $DIFF $options $rev1 $workfile >&2
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102 $DIFF $options $rev1 $workfile
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103 s=$?
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104 fi
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105 ;;
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106 *)
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107 echo "$0: $f is not an SCCS file" >&2
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108 esac
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109
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110 if test $status -lt $s
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111 then status=$s
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112 fi
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113 done
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114