tests/zgrep-context

   1 #!/bin/sh
   2 # Ensure that zgrep -15 works.  Before gzip-1.5, it would fail.
   3
   4 # Copyright (C) 2012-2025 Free Software Foundation, Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  18 # limit so don't run it by default.
  19
  20 . "${srcdir=.}/init.sh"; path_prepend_ ..
  21
  22 # A limited replacement for seq: handle 1 or 2 args; increment must be 1
  23 seq()
  24 {
  25   case $# in
  26     1) start=1  final=$1;;
  27     2) start=$1 final=$2;;
  28     *) echo you lose 1>&2; exit 1;;
  29   esac
  30   awk 'BEGIN{for(i='$start';i<='$final';i++) print i}' < /dev/null
  31 }
  32
  33 seq 40 > in || framework_failure_
  34 gzip < in > in.gz || framework_failure_
  35 seq 2 32 > exp || framework_failure_
  36
  37 : ${GREP=grep}
  38 $GREP -15 17 - < in > out && compare exp out || {
  39   echo >&2 "$0: $GREP does not support context options; skipping this test"
  40   exit 77
  41 }
  42
  43 fail=0
  44 zgrep -15 17 - < in.gz > out || fail=1
  45 compare exp out || fail=1
  46
  47 Exit $fail