#! /bin/sh

# Test various combinations of command-line options.

#

# Copyright (C) 2001, 2006, 2009-2017 Free Software Foundation, Inc.

#

# Copying and distribution of this file, with or without modification,

# are permitted in any medium without royalty provided the copyright

# notice and this notice are preserved.

#

# This set of tests was started by Julian Foad.

. "${srcdir=.}/init.sh"; path_prepend_ ../src

failures=0

# grep_test INPUT EXPECTED_OUTPUT PATTERN_AND_OPTIONS...

# Run "grep" with the given INPUT, pattern and options, and check that

# the output is EXPECTED_OUTPUT.  If not, print a message and set 'failures'.

# "/" represents a newline within INPUT and EXPECTED_OUTPUT.

grep_test ()

{

  INPUT="$1"

  EXPECT="$2"

  shift 2

  OUTPUT=$(printf %s "$INPUT" | tr "/" "\n" | grep "$@" | tr "\n" "/")

  if test "$OUTPUT" != "$EXPECT" || test "$VERBOSE" = "yes"; then

    echo "Testing:  grep $@"

    test "$LC_ALL" != C && test "$LC_ALL" != "" && echo "  LC_ALL: \"$LC_ALL\""

    echo "  input:  \"$INPUT\""

    echo "  output: \"$OUTPUT\""

  fi

  if test "$OUTPUT" != "$EXPECT"; then

    echo "  expect: \"$EXPECT\""

    echo "FAIL"

    failures=1

  fi

}

# Test "--only-matching" ("-o") option

# "-o" with "-i" should output an exact copy of the matching input text.

grep_test "WordA/wordB/WORDC/" "Word/word/WORD/" "word" -o -i

grep_test "WordA/wordB/WORDC/" "Word/word/WORD/" "Word" -o -i

grep_test "WordA/wordB/WORDC/" "Word/word/WORD/" "WORD" -o -i

# Should display the line number (-n), octet offset (-b), or file name

# (-H) of every match, not just of the first match on each input line.

# Check it both with and without -i because of the separate code paths.

# Also check what it does when lines of context are specified.

grep_test "wA wB/wC/" "1:wA/1:wB/2:wC/" "w." -o -n

grep_test "wA wB/wC/" "1:wA/1:wB/2:wC/" "w." -o -n -i

grep_test "wA wB/wC/" "1:wA/1:wB/2:wC/" "w." -o -n -3 2>/dev/null

grep_test "XwA YwB/ZwC/" "1:wA/5:wB/9:wC/" "w." -o -b

grep_test "XwA YwB/ZwC/" "1:wA/5:wB/9:wC/" "w." -o -b -i

grep_test "XwA YwB/ZwC/" "1:wA/5:wB/9:wC/" "w." -o -b -3 2>/dev/null

grep_test "XwA YwB/ZwC/" "1:w/5:w/9:w/" "w" -F -o -b

grep_test "XwA YwB/ZwC/" "1:w/5:w/9:w/" "w" -F -o -b -i

grep_test "XwA YwB/ZwC/" "1:w/5:w/9:w/" "w" -F -o -b -3 2>/dev/null

grep_test "wA wB/" "(standard input):wA/(standard input):wB/" "w." -o -H

grep_test "wA wB/" "(standard input):wA/(standard input):wB/" "w." -o -H -i

grep_test "wA wB/" "(standard input):wA/(standard input):wB/" "w." -o -H -3 2>/dev/null

# Combination of -h and -H

grep_test "wA wB/" "wA wB/" "w."

grep_test "wA wB/" "wA wB/" "w." -h

grep_test "wA wB/" "wA wB/" "w." -H -h

grep_test "wA wB/" "(standard input):wA wB/" "w." -H

grep_test "wA wB/" "(standard input):wA wB/" "w." -h -H

# End of a previous match should not match a "start of ..." expression.

grep_test "word_word/" "word_/" "^word_*" -o

grep_test "wordword/" "word/" "\

# Test "--color" option

CB="?[01;31m?[K"

CE="?[m?[K"

# "--color" with "-i" should output an exact copy of the matching input text.

grep_test "WordA/wordb/WORDC/" "${CB}Word${CE}A/${CB}word${CE}b/${CB}WORD${CE}C/" "word" --color=always -i

grep_test "WordA/wordb/WORDC/" "${CB}Word${CE}A/${CB}word${CE}b/${CB}WORD${CE}C/" "Word" --color=always -i

grep_test "WordA/wordb/WORDC/" "${CB}Word${CE}A/${CB}word${CE}b/${CB}WORD${CE}C/" "WORD" --color=always -i

# End of a previous match should not match a "start of ..." expression.

grep_test "word_word/" "${CB}word_${CE}word/" "^word_*" --color=always

grep_test "wordword/" "${CB}word${CE}word/" "\

# Test combination of "-m" with "-A" and anchors.

# Based on a report from Pavol Gono.

grep_test "4/40/"  "4/40/"  "^4$" -m1 -A99

grep_test "4/04/"  "4/04/"  "^4$" -m1 -A99

grep_test "4/444/" "4/444/" "^4$" -m1 -A99

grep_test "4/40/"  "4/40/"  "^4"  -m1 -A99

grep_test "4/04/"  "4/04/"  "^4"  -m1 -A99

grep_test "4/444/" "4/444/" "^4"  -m1 -A99

grep_test "4/40/"  "4/40/"  "4$"  -m1 -A99

grep_test "4/04/"  "4/04/"  "4$"  -m1 -A99

grep_test "4/444/" "4/444/" "4$"  -m1 -A99

# Test for "-F -w" bugs.  Thanks to Gordon Lack for these two.

grep_test "A/CX/B/C/" "A/B/C/" -wF -e A -e B -e C

grep_test "LIN7C 55327/" "" -wF -e 5327 -e 5532

# Test for non-empty matches following empty ones.

grep_test 'xyz/' 'y/' -o 'y*'

grep_test 'xyz/' "x${CB}y${CE}z/" --color=always 'y*'

# Test for increasing/decreasing-length word matches,

# for independence from pattern order within the pattern list,

# and for preferring the longest match at a given position.

x0='a bb ccc dddd/'

x1='dddd ccc bb a/'

x2='bcd abcd abc bc bcd abc/'

x3='bc abcd bc/'

y0="a ${CB}bb${CE} ${CB}ccc${CE} dddd/"

y1="dddd ${CB}ccc${CE} ${CB}bb${CE} a/"

y2="bcd abcd abc ${CB}bc${CE} bcd abc/"

y3="${CB}bc${CE} abcd ${CB}bc${CE}/"

grep_test "$x0" "$y0" -E --color=always -e bb -e cc -e ccc

grep_test "$x0" "$y0" -F --color=always -e bb -e cc -e ccc

grep_test "$x0" "$y0" -E --color=always -e bb -e ccc -e cc

grep_test "$x0" "$y0" -F --color=always -e bb -e ccc -e cc

grep_test "$x0" "$y0" -E -w --color=always -e bb -e ccc

grep_test "$x0" "$y0" -F -w --color=always -e bb -e ccc

grep_test "$x0" "$y0" -E -w --color=always -e ccc -e bb

grep_test "$x0" "$y0" -F -w --color=always -e ccc -e bb

grep_test "$x1" "$y1" -E -w --color=always -e bb -e ccc

grep_test "$x1" "$y1" -F -w --color=always -e bb -e ccc

grep_test "$x1" "$y1" -E -w --color=always -e ccc -e bb

grep_test "$x1" "$y1" -F -w --color=always -e ccc -e bb

grep_test "$x2" "$y2" -E -w --color=always bc

grep_test "$x2" "$y2" -F -w --color=always bc

grep_test "$x3" "$y3" -E -w --color=always bc

grep_test "$x3" "$y3" -F -w --color=always bc

# Bug#25655

grep_test .tar/ .tar/ -e '\.tar' -e '\.tbz'

grep_test .tar/ .tar/ -o -e '\.tar' -e 'tar'

grep_test '$*.[^\/' '$*.[^\/' -o -e '\$\*\.\[\^\\' -e abc

grep_test '$*.[^\/(+?{|/' '$*.[^\/(+?{|/' -o -E \

          -e '\$\*\.\[\^\\' -e '\(\+\?\{\|'

# Skip the rest of the tests - known to fail. TAA.

Exit $failures

# The rest of this file is meant to be executed under this locale.

LC_ALL=cs_CZ.UTF-8; export LC_ALL

# If the UTF-8 locale doesn't work, skip these tests silently.

locale -k LC_CTYPE 2>/dev/null | grep -q "charmap.*UTF-8" || Exit $failures

# Test character class erroneously matching a '[' character.

grep_test "[/" "" "[[:alpha:]]" -E

for mode in F G E; do

  # Hint:  pipe the output of these tests in

  #        "| LESS= LESSCHARSET=ascii less".

  # LETTER N WITH TILDE is U+00F1 and U+00D1.

  # LETTER Y WITH DIAERESIS is U+00FF and U+0178.

  grep_test 'añÿb/AÑŸB/' 'ñÿ/ÑŸ/' 'ñÿ' -o -i -$mode

  grep_test 'añÿb/AÑŸB/' 'ñÿ/ÑŸ/' 'ÑŸ' -o -i -$mode

  grep_test 'añÿb/AÑŸB/' "a${CB}ñÿ${CE}b/A${CB}ÑŸ${CE}B/" 'ñÿ' --color=always -i -$mode

  grep_test 'añÿb/AÑŸB/' "a${CB}ñÿ${CE}b/A${CB}ÑŸ${CE}B/" 'ÑŸ' --color=always -i -$mode

  # POSIX (about -i):  ... each character in the string is matched

  # against the pattern, not only the character, but also its case

  # counterpart (if any), shall be matched.

  # The following were chosen because of their trickiness due to the

  # differing UTF-8 octet length of their counterpart and to the

  # non-reflexivity of their mapping.

  # Beware of homographs!  Look carefully at the actual octets.

  # lc(U+0130 LATIN CAPITAL LETTER I WITH DOT ABOVE) = U+0069 LATIN SMALL LETTER I

  grep_test 'aÄ°b/' "a${CB}Ä°${CE}b/" 'i' --color=always -i -$mode

  grep_test 'aib/' ''               'Ä°' --color=always -i -$mode

  grep_test 'aÄ°b/' ''               'I' --color=always -i -$mode

  # uc(U+0131 LATIN SMALL LETTER DOTLESS I)          = U+0049 LATIN CAPITAL LETTER I

  grep_test 'aıb/' "a${CB}ı${CE}b/" 'I' --color=always -i -$mode

  grep_test 'aIb/' ''               'ı' --color=always -i -$mode

  grep_test 'aıb/' ''               'i' --color=always -i -$mode

  # uc(U+017F LATIN SMALL LETTER LONG S)             = U+0053 LATIN CAPITAL LETTER S

  grep_test 'aſb/' "a${CB}ſ${CE}b/" 'S' --color=always -i -$mode

  grep_test 'aSb/' ''               'Å¿' --color=always -i -$mode

  grep_test 'aſb/' ''               's' --color=always -i -$mode

  # uc(U+1FBE GREEK PROSGEGRAMMENI)                  = U+0399 GREEK CAPITAL LETTER IOTA

  grep_test 'aιb/' "a${CB}ι${CE}b/" 'Ι' --color=always -i -$mode

  grep_test 'aΙb/' ''               'ι' --color=always -i -$mode

  grep_test 'aιb/' ''               'ι' --color=always -i -$mode

  # lc(U+2126 OHM SIGN)                              = U+03C9 GREEK SMALL LETTER OMEGA

  grep_test 'aΩb/' "a${CB}Ω${CE}b/" 'ω' --color=always -i -$mode

  grep_test 'aωb/' ''               'Ω' --color=always -i -$mode

  grep_test 'aΩb/' ''               'Ω' --color=always -i -$mode

  # lc(U+212A KELVIN SIGN)                           = U+006B LATIN SMALL LETTER K

  grep_test 'aKb/' "a${CB}K${CE}b/" 'k' --color=always -i -$mode

  grep_test 'akb/' ''               'K' --color=always -i -$mode

  grep_test 'aKb/' ''               'K' --color=always -i -$mode

  # lc(U+212B ANGSTROM SIGN)                         = U+00E5 LATIN SMALL LETTER A WITH RING ABOVE

  grep_test 'aâ„«b/' "a${CB}â„«${CE}b/" 'Ã¥' --color=always -i -$mode

  grep_test 'aåb/' ''               'Å' --color=always -i -$mode

  grep_test 'aâ„«b/' ''               'Ã…' --color=always -i -$mode

done

# Any tests inserted right here will be performed under an UTF-8 locale.

# Insert them before LC_ALL is set above to avoid this.

# Leave this comment last.

Exit $failures