codekingpro/portable-devtools

1#!/bin/sh2# sh is buggy on RS/6000 AIX 3.2. Replace above line with #!/bin/ksh3 4# Copyright (C) 1998, 2002, 2006-2007, 2009-2025 Free Software Foundation, Inc.5# Copyright (C) 1993 Jean-loup Gailly6 7# This program is free software; you can redistribute it and/or modify8# it under the terms of the GNU General Public License as published by9# the Free Software Foundation; either version 3 of the License, or10# (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 of14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the15# GNU General Public License for more details.16 17# You should have received a copy of the GNU General Public License18# along with this program.  If not, see <https://www.gnu.org/licenses/>.19 20case $1 in21  --__cmp) shift22        prog=cmp;  cmp='${CMP-cmp}'  ;;23  *)    prog=diff; cmp='${DIFF-diff}';;24esac25 26version="z$prog (gzip) 1.1427Copyright (C) 2025 Free Software Foundation, Inc.28This is free software.  You may redistribute copies of it under the terms of29the GNU General Public License <https://www.gnu.org/licenses/gpl.html>.30There is NO WARRANTY, to the extent permitted by law.31 32Written by Jean-loup Gailly."33 34usage="Usage: $0 [OPTION]... FILE1 [FILE2]35Compare FILE1 to FILE2, using their uncompressed contents if they are36compressed.  If FILE2 is omitted, compare FILE1 to the uncompressed37contents of FILE1.gz.  Do comparisons like '$prog' does.38 39OPTIONs are the same as for '$prog'.40 41Report bugs to <bug-gzip@gnu.org>."42 43# sed script to escape all ' for the shell, and then (to handle trailing44# newlines correctly) turn trailing X on last line into '.45escape='46  s/'\''/'\''\\'\'''\''/g47  $s/X$/'\''/48'49 50filesonly=51file1=52file2=53needop=54 55for arg56do57  case $filesonly$needop$arg in58  --h*) printf '%s\n' "$usage"   || exit 2; exit;;59  --v*) printf '%s\n' "$version" || exit 2; exit;;60  --) filesonly=t;;61  -*\'*) cmp="$cmp '"`printf '%sX\n' "$arg" | LC_ALL=C sed "$escape"`;;62  -[CDFISUWXx]) needop="'$arg'";;63  -?*) cmp="$cmp '$arg'";;64  *) case $needop in65     '') case $arg in66         '') printf >&2 '%s\n' "$0: empty file name"; exit 2;;67         esac68         case $file1 in69         '') file1=$arg;;70         *) case $file2 in71            '') file2=$arg;;72            *) printf >&2 '%s\n' "$0: extra operand '$arg'"; exit 2;;73            esac;;74         esac;;75     *) cmp="$cmp $needop '$arg'"76        needop=;;77     esac;;78  esac79done80case $needop in81'') ;;82*) printf >&2 '%s\n' "$0: $prevarg: option requires an argument -- $needop"83   exit 2;;84esac85 86cmp="$cmp --"87 88case $file1 in89'') printf >&2 '%s\n' "$0: missing operand"; exit 2;;90-) ;;91*) <"$file1" || exit 2;;92esac93case $file2 in94''|-) ;;95*) <"$file2" || exit 2;;96esac97 98gzip_status=099exec 3>&1100 101case $file2 in102'')103  case $file1 in104  *[-.]gz* | *[-.][zZ] | *.t[ga]z)105    FILE=`LC_ALL=C expr "X$file1" : 'X\(.*\)[-.][zZtga]*$'`106    gzip_status=$(107      exec 4>&1108      (gzip -cd -- "$file1" 4>&-; echo $? >&4) 3>&- |109        eval "$cmp" - '"$FILE"' >&3110    );;111  *)112    printf >&2 '%s\n' "$0: $file1: unknown compressed file extension"113    exit 2;;114  esac;;115*)116  case $file1,$file2 in117  -,-)118        gzip_status=$(119          exec 4>&1120          (gzip -cdfq - 4>&-; echo $? >&4) 3>&- |121            eval "$cmp" - - >&3122        );;123  *)124        case $file1 in125        *[-.]gz* | *[-.][zZ] | *.t[ga]z | -)126                case $file2 in127                *[-.]gz* | *[-.][zZ] | *.t[ga]z | -)128                    if129                        # Reject Solaris 8's buggy /bin/bash 2.03.130                        echo X |131                         (echo X | eval "$cmp" /dev/fd/5 - >/dev/null 2>&1) \132                                5<&0133                    then134                        gzip_status=$(135                          exec 4>&1136                          (gzip -cdfq -- "$file1" 4>&-; echo $? >&4) 3>&- |137                              ((gzip -cdfq -- "$file2" 4>&-138                                echo $? >&4) 3>&- 5<&- </dev/null |139                               eval "$cmp" /dev/fd/5 - >&3) 5<&0140                        )141                        cmp_status=$?142                        case $gzip_status in143                          *[1-9]*) gzip_status=1;;144                          *) gzip_status=0;;145                        esac146                        (exit $cmp_status)147                    else148                        tmp=149                        trap '150                          test -n "$tmp" && rm -f "$tmp"151                          (exit 2); exit 2152                        ' HUP INT PIPE TERM 0153                        case $TMPDIR in154                          / | /*/) ;;155                          /*) TMPDIR=$TMPDIR/;;156                          *) TMPDIR=/tmp/;;157                        esac158                        if command -v mktemp >/dev/null 2>&1; then159                          tmp=`mktemp "${TMPDIR}zdiffXXXXXXXXX"` ||160                            exit 2161                        else162                          set -C163                          tmp=${TMPDIR}zdiff$$164                        fi165                        gzip -cdfq -- "$file2" > "$tmp" || exit 2166                        gzip_status=$(167                          exec 4>&1168                          (gzip -cdfq -- "$file1" 4>&-; echo $? >&4) 3>&- |169                            eval "$cmp" - '"$tmp"' >&3170                        )171                        cmp_status=$?172                        rm -f "$tmp" || gzip_status=$?173                        trap - HUP INT PIPE TERM 0174                        (exit $cmp_status)175                    fi;;176                *)177                    gzip_status=$(178                      exec 4>&1179                      (gzip -cdfq -- "$file1" 4>&-; echo $? >&4) 3>&- |180                        eval "$cmp" - '"$file2"' >&3181                    );;182                esac;;183        *)      case $file2 in184                *[-.]gz* | *[-.][zZ] | *.t[ga]z | -)185                        gzip_status=$(186                          exec 4>&1187                          (gzip -cdfq -- "$file2" 4>&-; echo $? >&4) 3>&- |188                            eval "$cmp" '"$file1"' - >&3189                        );;190                *)	eval "$cmp" '"$file1"' '"$file2"';;191                esac;;192        esac;;193  esac;;194esac195 196cmp_status=$?197test "$gzip_status" -eq 0 || exit 2198exit $cmp_status199