X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=t%2Fop%2Fpack.t;h=a41ef8d12404b5a33bdba1f4c26d4bf500e7fb97;hb=8a064bd6d0d7a44f3e80bed959e1dc566b57850d;hp=28aece7be64d4f81c59a1a7d15e1c4db8b991420;hpb=08ca2aa38a29585fadf425ad3ad4f05750717023;p=p5sagit%2Fp5-mst-13.2.git diff --git a/t/op/pack.t b/t/op/pack.t index 28aece7..a41ef8d 100755 --- a/t/op/pack.t +++ b/t/op/pack.t @@ -12,10 +12,10 @@ my $no_endianness = $] > 5.009 ? '' : my $no_signedness = $] > 5.009 ? '' : "Signed/unsigned pack modifiers not available on this perl"; -plan tests => 13864; +plan tests => 14697; use strict; -use warnings; +use warnings qw(FATAL all); use Config; my $Is_EBCDIC = (defined $Config{ebcdic} && $Config{ebcdic} eq 'define'); @@ -129,6 +129,7 @@ sub list_eq ($$) { my $foo; open(BIN, $Perl) || die "Can't open $Perl: $!\n"; + binmode BIN; sysread BIN, $foo, 8192; close BIN; @@ -368,7 +369,7 @@ SKIP: { # temps sub foo { my $a = "a"; return $a . $a++ . $a++ } { - use warnings; + use warnings qw(NONFATAL all);; my $warning; local $SIG{__WARN__} = sub { $warning = $_[0]; @@ -422,11 +423,11 @@ while (my ($base, $expect) = splice @lengths, 0, 2) { print "# test unpack-pack lengths\n"; -my @templates = qw(c C i I s S l L n N v V f d q Q); +my @templates = qw(c C W i I s S l L n N v V f d q Q); foreach my $base (@templates) { my @tmpl = ($base); - $base =~ /^[cnv]/i or push @tmpl, "$base>", "$base<"; + $base =~ /^[cwnv]/i or push @tmpl, "$base>", "$base<"; foreach my $t (@tmpl) { SKIP: { my @t = eval { unpack("$t*", pack("$t*", 12, 34)) }; @@ -507,7 +508,7 @@ foreach ( ['p', 'Z3', "foo", "fo\0"], ['u', 'Z*', "foo\0bar \0", "foo"], ['u', 'Z8', "foo\0bar \0", "foo"], -) +) { my ($what, $template, $in, $out) = @$_; my $got = $what eq 'u' ? (unpack $template, $in) : (pack $template, $in); @@ -612,7 +613,7 @@ sub numbers_with_total { } if ($calc_sum == $calc_sum - 1 && $calc_sum == $max_p1) { # we're into floating point (either by getting out of the range of - # UV arithmetic, or because we're doing a floating point checksum) + # UV arithmetic, or because we're doing a floating point checksum) # and our calculation of the checksum has become rounded up to # max_checksum + 1 $calc_sum = 0; @@ -640,6 +641,7 @@ sub numbers_with_total { numbers ('c', -128, -1, 0, 1, 127); numbers ('C', 0, 1, 127, 128, 255); +numbers ('W', 0, 1, 127, 128, 255, 256, 0x7ff, 0x800, 0xfffd); numbers ('s', -32768, -1, 0, 1, 32767); numbers ('S', 0, 1, 32767, 32768, 65535); numbers ('i', -2147483648, -1, 0, 1, 2147483647); @@ -857,13 +859,13 @@ SKIP: { ['a/a*/a*', '212ab345678901234567','ab3456789012'], ['a/a*/a*', '3012ab345678901234567', 'ab3456789012'], ['a/a*/b*', '212ab', $Is_EBCDIC ? '100000010100' : '100001100100'], - ) + ) { my ($pat, $in, $expect) = @$_; undef $x; eval { ($x) = unpack $pat, $in }; is($@, ''); - is($x, $expect) || + is($x, $expect) || printf "# list unpack ('$pat', '$in') gave %s, expected '$expect'\n", encode_list ($x); @@ -942,6 +944,8 @@ SKIP: { # does unpack U0U on byte data warn? { + use warnings qw(NONFATAL all);; + my $bad = pack("U0C", 255); local $SIG{__WARN__} = sub { $@ = "@_" }; my @null = unpack('U0U', $bad); @@ -999,7 +1003,7 @@ foreach ( ['@4', 'N', "\0"x4], ['a*@8a*', 'Camel', 'Dromedary', "Camel\0\0\0Dromedary"], ['a*@4a', 'Perl rules', '!', 'Perl!'], -) +) { my ($template, @in) = @$_; my $out = pop @in; @@ -1019,7 +1023,7 @@ foreach ( ['@3', "ice"], ['@2a2', "water", "te"], ['a*@1a3', "steam", "steam", "tea"], -) +) { my ($template, $in, @out) = @$_; my @got = eval {unpack $template, $in}; @@ -1190,11 +1194,6 @@ SKIP: { } { # more on grouping (W.Laun) - use warnings; - my $warning; - local $SIG{__WARN__} = sub { - $warning = $_[0]; - }; # @ absolute within ()-group my $badc = pack( '(a)*', unpack( '(@1a @0a @2)*', 'abcd' ) ); is( $badc, 'badc' ); @@ -1204,7 +1203,7 @@ SKIP: { my @a = unpack( '(@1c)((@2c)@3c)', $buf ); is( "@a", "@b" ); - # various unpack count/code scenarios + # various unpack count/code scenarios my @Env = ( a => 'AAA', b => 'BBB' ); my $env = pack( 'S(S/A*S/A*)*', @Env/2, @Env ); @@ -1217,7 +1216,7 @@ SKIP: { # 2 4 5 7 10 1213 eval { @pup = unpack( 'S/(S/A* S/A*)', substr( $env, 0, 13 ) ) }; like( $@, qr{length/code after end of string} ); - + # postfix repeat count $env = pack( '(S/A* S/A*)' . @Env/2, @Env ); @@ -1233,7 +1232,7 @@ SKIP: { } { # syntax checks (W.Laun) - use warnings; + use warnings qw(NONFATAL all);; my @warning; local $SIG{__WARN__} = sub { push( @warning, $_[0] ); @@ -1250,7 +1249,7 @@ SKIP: { eval { my @inf = unpack( 'c/*a', "\x03AAA\x02BB" ); }; like( $@, qr{'/' does not take a repeat count} ); - # white space where possible + # white space where possible my @Env = ( a => 'AAA', b => 'BBB' ); my $env = pack( ' S ( S / A* S / A* )* ', @Env/2, @Env ); my @pup = unpack( ' S / ( S / A* S / A* ) ', $env ); @@ -1279,8 +1278,8 @@ SKIP: { # @ repeat default 1 my $s = pack( 'AA@A', 'A', 'B', 'C' ); my @c = unpack( 'AA@A', $s ); - is( $s, 'AC' ); - is( "@c", "A C C" ); + is( $s, 'AC' ); + is( "@c", "A C C" ); # no unpack code after / eval { my @a = unpack( "C/", "\3" ); }; @@ -1303,7 +1302,7 @@ SKIP: { } { # Repeat count [SUBEXPR] - my @codes = qw( x A Z a c C B b H h s v n S i I l V N L p P f F d + my @codes = qw( x A Z a c C W B b H h s v n S i I l V N L p P f F d s! S! i! I! l! L! j J); my $G; if (eval { pack 'q', 1 } ) { @@ -1323,6 +1322,7 @@ SKIP: { @val{@codes} = map { / [Xx] (?{ undef }) | [AZa] (?{ 'something' }) | C (?{ 214 }) + | W (?{ 8188 }) | c (?{ 114 }) | [Bb] (?{ '101' }) | [Hh] (?{ 'b8' }) @@ -1403,6 +1403,7 @@ is(scalar unpack('A /A /A Z20', '3004bcde'), 'bcde'); $b =~ s/(?:17000+|16999+)\d+(e-45) /17$1 /gi; # stringification is gamble is($b, "@a @a"); + use warnings qw(NONFATAL all);; my $warning; local $SIG{__WARN__} = sub { $warning = $_[0]; @@ -1493,6 +1494,19 @@ is(unpack('c'), 65, "one-arg unpack (change #18751)"); # defaulting to $_ is($a[-2], "X", "[perl #15288]"); } +{ + use warnings qw(NONFATAL all);; + my $warning; + local $SIG{__WARN__} = sub { + $warning = $_[0]; + }; + my $out = pack("u99", "foo" x 99); + like($warning, qr/Field too wide in 'u' format in pack at /, + "Warn about too wide uuencode"); + is($out, ("_" . "9F]O" x 21 . "\n") x 4 . "M" . "9F]O" x 15 . "\n", + "Use max width in case of too wide uuencode"); +} + # checksums { # verify that unpack advances correctly wrt a checksum @@ -1509,6 +1523,8 @@ is(unpack('c'), 65, "one-arg unpack (change #18751)"); # defaulting to $_ my (@x) = unpack("a(U0)U", "b\341\277\274"); is($x[0], 'b', 'before scope'); is($x[1], 8188, 'after scope'); + + is(pack("a(U0)U", "b", 8188), "b\341\277\274"); } { @@ -1525,3 +1541,432 @@ is(unpack('c'), 65, "one-arg unpack (change #18751)"); # defaulting to $_ my (@x) = unpack("C*", pack("CZ0", 1, "b")); is(join(',', @x), '1', 'pack Z0 doesn\'t destroy the character before'); } + +{ + # Encoding neutrality + # String we will pull apart and rebuild in several ways: + my $down = "\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff\x05\x06"; + my $up = $down; + utf8::upgrade($up); + + my %expect = + # [expected result, + # how many chars it should progress, + # (optional) expected result of pack] + (a5 => ["\xf8\xf9\xfa\xfb\xfc", 5], + A5 => ["\xf8\xf9\xfa\xfb\xfc", 5], + Z5 => ["\xf8\xf9\xfa\xfb\xfc", 5, "\xf8\xf9\xfa\xfb\x00\xfd"], + b21 => ["000111111001111101011", 3, "\xf8\xf9\x1a\xfb"], + B21 => ["111110001111100111111", 3, "\xf8\xf9\xf8\xfb"], + H5 => ["f8f9f", 3, "\xf8\xf9\xf0\xfb"], + h5 => ["8f9fa", 3, "\xf8\xf9\x0a\xfb"], + "s<" => [-1544, 2], + "s>" => [-1799, 2], + "S<" => [0xf9f8, 2], + "S>" => [0xf8f9, 2], + "l<" => [-67438088, 4], + "l>" => [-117835013, 4], + "L>" => [0xf8f9fafb, 4], + "L<" => [0xfbfaf9f8, 4], + n => [0xf8f9, 2], + N => [0xf8f9fafb, 4], + v => [63992, 2], + V => [0xfbfaf9f8, 4], + c => [-8, 1], + U0U => [0xf8, 1], + w => ["8715569050387726213", 9], + q => ["-283686952306184", 8], + Q => ["18446460386757245432", 8], + ); + + for my $string ($down, $up) { + for my $format (sort {lc($a) cmp lc($b) || $a cmp $b } keys %expect) { + SKIP: { + my $expect = $expect{$format}; + # unpack upgraded and downgraded string + my @result = eval { unpack("$format C0 W", $string) }; + skip "cannot pack/unpack '$format C0 W' on this perl", 5 if + $@ && is_valid_error($@); + is(@result, 2, "Two results from unpack $format C0 W"); + + # pack to downgraded + my $new = pack("$format C0 W", @result); + is(length($new), $expect->[1]+1, + "pack $format C0 W should give $expect->[1]+1 chars"); + is($new, $expect->[2] || substr($string, 0, length $new), + "pack $format C0 W returns expected value"); + + # pack to upgraded + $new = pack("a0 $format C0 W", chr(256), @result); + is(length($new), $expect->[1]+1, + "pack a0 $format C0 W should give $expect->[1]+1 chars"); + is($new, $expect->[2] || substr($string, 0, length $new), + "pack a0 $format C0 W returns expected value"); + } + } + } +} + +{ + # Encoding neutrality, numbers + my $val = -2.68; + for my $format (qw(s S i I l L j J f d F D q Q + s! S! i! I! l! L! n! N! v! V!)) { + SKIP: { + my $down = eval { pack($format, $val) }; + skip "cannot pack/unpack $format on this perl", 9 if + $@ && is_valid_error($@); + ok(!utf8::is_utf8($down), "Simple $format pack doesn't get upgraded"); + my $up = pack("a0 $format", chr(256), $val); + ok(utf8::is_utf8($up), "a0 $format with high char leads to upgrade"); + is($down, $up, "$format generated strings are equal though"); + my @down_expanded = unpack("$format W", $down . chr(0xce)); + is(@down_expanded, 2, "Expand to two values"); + is($down_expanded[1], 0xce, + "unpack $format left us at the expected position"); + my @up_expanded = unpack("$format W", $up . chr(0xce)); + is(@up_expanded, 2, "Expand to two values"); + is($up_expanded[1], 0xce, + "unpack $format left us at the expected position"); + is($down_expanded[0], $up_expanded[0], "$format unpack was neutral"); + is(pack($format, $down_expanded[0]), $down, "Pack $format undoes unpack $format"); + } + } +} + +{ + # C is *not* neutral + my $down = "\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff\x05\x06"; + my $up = $down; + utf8::upgrade($up); + my @down = unpack("C*", $down); + my @expect_down = (0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, 0x05, 0x06); + is("@down", "@expect_down", "byte expand"); + is(pack("C*", @down), $down, "byte join"); + + my @up = unpack("C*", $up); + my @expect_up = (0xc3, 0xb8, 0xc3, 0xb9, 0xc3, 0xba, 0xc3, 0xbb, 0xc3, 0xbc, 0xc3, 0xbd, 0xc3, 0xbe, 0xc3, 0xbf, 0x05, 0x06); + is("@up", "@expect_up", "UTF-8 expand"); + is(pack("U0C0C*", @up), $up, "UTF-8 join"); +} + +{ + # Harder cases for the neutrality test + + # u format + my $down = "\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff\x05\x06"; + my $up = $down; + utf8::upgrade($up); + is(pack("u", $down), pack("u", $up), "u pack is neutral"); + is(unpack("u", pack("u", $down)), $down, "u unpack to downgraded works"); + is(unpack("U0C0u", pack("u", $down)), $up, "u unpack to upgraded works"); + + # p/P format + # This actually only tests something if the address contains a byte >= 0x80 + my $str = "abc\xa5\x00\xfede"; + $down = pack("p", $str); + is(pack("P", $str), $down); + is(pack("U0C0p", $str), $down); + is(pack("U0C0P", $str), $down); + is(unpack("p", $down), "abc\xa5", "unpack p downgraded"); + $up = $down; + utf8::upgrade($up); + is(unpack("p", $up), "abc\xa5", "unpack p upgraded"); + + is(unpack("P7", $down), "abc\xa5\x00\xfed", "unpack P downgraded"); + is(unpack("P7", $up), "abc\xa5\x00\xfed", "unpack P upgraded"); + + # x, X and @ + $down = "\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff\x05\x06"; + $up = $down; + utf8::upgrade($up); + + is(unpack('@4W', $down), 0xfc, "\@positioning on downgraded string"); + is(unpack('@4W', $up), 0xfc, "\@positioning on upgraded string"); + + is(unpack('@4x2W', $down), 0xfe, "x moving on downgraded string"); + is(unpack('@4x2W', $up), 0xfe, "x moving on upgraded string"); + is(unpack('@4x!4W', $down), 0xfc, "x! moving on downgraded string"); + is(unpack('@4x!4W', $up), 0xfc, "x! moving on upgraded string"); + is(unpack('@5x!4W', $down), 0x05, "x! moving on downgraded string"); + is(unpack('@5x!4W', $up), 0x05, "x! moving on upgraded string"); + + is(unpack('@4X2W', $down), 0xfa, "X moving on downgraded string"); + is(unpack('@4X2W', $up), 0xfa, "X moving on upgraded string"); + is(unpack('@4X!4W', $down), 0xfc, "X! moving on downgraded string"); + is(unpack('@4X!4W', $up), 0xfc, "X! moving on upgraded string"); + is(unpack('@5X!4W', $down), 0xfc, "X! moving on downgraded string"); + is(unpack('@5X!4W', $up), 0xfc, "X! moving on upgraded string"); + is(unpack('@5X!8W', $down), 0xf8, "X! moving on downgraded string"); + is(unpack('@5X!8W', $up), 0xf8, "X! moving on upgraded string"); + + is(pack("W2x", 0xfa, 0xe3), "\xfa\xe3\x00", "x on downgraded string"); + is(pack("W2x!4", 0xfa, 0xe3), "\xfa\xe3\x00\x00", + "x! on downgraded string"); + is(pack("W2x!2", 0xfa, 0xe3), "\xfa\xe3", "x! on downgraded string"); + is(pack("U0C0W2x", 0xfa, 0xe3), "\xfa\xe3\x00", "x on upgraded string"); + is(pack("U0C0W2x!4", 0xfa, 0xe3), "\xfa\xe3\x00\x00", + "x! on upgraded string"); + is(pack("U0C0W2x!2", 0xfa, 0xe3), "\xfa\xe3", "x! on upgraded string"); + is(pack("W2X", 0xfa, 0xe3), "\xfa", "X on downgraded string"); + is(pack("U0C0W2X", 0xfa, 0xe3), "\xfa", "X on upgraded string"); + is(pack("W2X!2", 0xfa, 0xe3), "\xfa\xe3", "X! on downgraded string"); + is(pack("U0C0W2X!2", 0xfa, 0xe3), "\xfa\xe3", "X! on upgraded string"); + is(pack("W3X!2", 0xfa, 0xe3, 0xa6), "\xfa\xe3", "X! on downgraded string"); + is(pack("U0C0W3X!2", 0xfa, 0xe3, 0xa6), "\xfa\xe3", + "X! on upgraded string"); + + # backward eating through a ( moves the group starting point backwards + is(pack("a*(Xa)", "abc", "q"), "abq", + "eating before strbeg moves it back"); + is(pack("a*(Xa)", "ab" . chr(512), "q"), "abq", + "eating before strbeg moves it back"); + + # Check marked_upgrade + is(pack('W(W(Wa@3W)@6W)@9W', 0xa1, 0xa2, 0xa3, "a", 0xa4, 0xa5, 0xa6), + "\xa1\xa2\xa3a\x00\xa4\x00\xa5\x00\xa6"); + $up = "a"; + utf8::upgrade($up); + is(pack('W(W(Wa@3W)@6W)@9W', 0xa1, 0xa2, 0xa3, $up, 0xa4, 0xa5, 0xa6), + "\xa1\xa2\xa3a\x00\xa4\x00\xa5\x00\xa6", "marked upgrade caused by a"); + is(pack('W(W(WW@3W)@6W)@9W', 0xa1, 0xa2, 0xa3, 256, 0xa4, 0xa5, 0xa6), + "\xa1\xa2\xa3\x{100}\x00\xa4\x00\xa5\x00\xa6", + "marked upgrade caused by W"); + is(pack('W(W(WU0aC0@3W)@6W)@9W', 0xa1, 0xa2, 0xa3, "a", 0xa4, 0xa5, 0xa6), + "\xa1\xa2\xa3a\x00\xa4\x00\xa5\x00\xa6", "marked upgrade caused by U0"); + + # a, A and Z + $down = "\xa4\xa6\xa7"; + $up = $down; + utf8::upgrade($up); + utf8::upgrade(my $high = "\xfeb"); + + for my $format ("a0", "A0", "Z0", "U0a0C0", "U0A0C0", "U0Z0C0") { + is(pack("a* $format a*", "ab", $down, "cd"), "abcd", + "$format format on plain string"); + is(pack("a* $format a*", "ab", $up, "cd"), "abcd", + "$format format on upgraded string"); + is(pack("a* $format a*", $high, $down, "cd"), "\xfebcd", + "$format format on plain string"); + is(pack("a* $format a*", $high, $up, "cd"), "\xfebcd", + "$format format on upgraded string"); + my @down = unpack("a1 $format a*", "\xfeb"); + is("@down", "\xfe b", "unpack $format"); + my @up = unpack("a1 $format a*", $high); + is("@up", "\xfe b", "unpack $format"); + } + is(pack("a1", $high), "\xfe"); + is(pack("A1", $high), "\xfe"); + is(pack("Z1", $high), "\x00"); + is(pack("a2", $high), "\xfeb"); + is(pack("A2", $high), "\xfeb"); + is(pack("Z2", $high), "\xfe\x00"); + is(pack("a5", $high), "\xfeb\x00\x00\x00"); + is(pack("A5", $high), "\xfeb "); + is(pack("Z5", $high), "\xfeb\x00\x00\x00"); + is(pack("a*", $high), "\xfeb"); + is(pack("A*", $high), "\xfeb"); + is(pack("Z*", $high), "\xfeb\x00"); + + utf8::upgrade($high = "\xc3\xbeb"); + is(pack("U0a2", $high), "\xfe"); + is(pack("U0A2", $high), "\xfe"); + is(pack("U0Z1", $high), "\x00"); + is(pack("U0a3", $high), "\xfeb"); + is(pack("U0A3", $high), "\xfeb"); + is(pack("U0Z3", $high), "\xfe\x00"); + is(pack("U0a6", $high), "\xfeb\x00\x00\x00"); + is(pack("U0A6", $high), "\xfeb "); + is(pack("U0Z6", $high), "\xfeb\x00\x00\x00"); + is(pack("U0a*", $high), "\xfeb"); + is(pack("U0A*", $high), "\xfeb"); + is(pack("U0Z*", $high), "\xfeb\x00"); +} +{ + # pack / + my @array = 1..14; + my @out = unpack("N/S", pack("N/S", @array) . "abcd"); + is("@out", "@array", "pack N/S works"); + @out = unpack("N/S*", pack("N/S*", @array) . "abcd"); + is("@out", "@array", "pack N/S* works"); + @out = unpack("N/S*", pack("N/S14", @array) . "abcd"); + is("@out", "@array", "pack N/S14 works"); + @out = unpack("N/S*", pack("N/S15", @array) . "abcd"); + is("@out", "@array", "pack N/S15 works"); + @out = unpack("N/S*", pack("N/S13", @array) . "abcd"); + is("@out", "@array[0..12]", "pack N/S13 works"); + @out = unpack("N/S*", pack("N/S0", @array) . "abcd"); + is("@out", "", "pack N/S0 works"); + is(pack("Z*/a0", "abc"), "0\0", "pack Z*/a0 makes a short string"); + is(pack("Z*/Z0", "abc"), "0\0", "pack Z*/Z0 makes a short string"); + is(pack("Z*/a3", "abc"), "3\0abc", "pack Z*/a3 makes a full string"); + is(pack("Z*/Z3", "abc"), "3\0ab\0", "pack Z*/Z3 makes a short string"); + is(pack("Z*/a5", "abc"), "5\0abc\0\0", "pack Z*/a5 makes a long string"); + is(pack("Z*/Z5", "abc"), "5\0abc\0\0", "pack Z*/Z5 makes a long string"); + is(pack("Z*/Z"), "1\0\0", "pack Z*/Z makes an extended string"); + is(pack("Z*/Z", ""), "1\0\0", "pack Z*/Z makes an extended string"); + is(pack("Z*/a", ""), "0\0", "pack Z*/a makes an extended string"); +} +{ + # unpack("A*", $unicode) strips general unicode spaces + is(unpack("A*", "ab \n\xa0 \0"), "ab \n\xa0", + 'normal A* strip leaves \xa0'); + is(unpack("U0C0A*", "ab \n\xa0 \0"), "ab \n\xa0", + 'normal A* strip leaves \xa0 even if it got upgraded for technical reasons'); + is(unpack("A*", pack("a*(U0U)a*", "ab \n", 0xa0, " \0")), "ab", + 'upgraded strings A* removes \xa0'); + is(unpack("A*", pack("a*(U0UU)a*", "ab \n", 0xa0, 0x1680, " \0")), "ab", + 'upgraded strings A* removes all unicode whitespace'); + is(unpack("A5", pack("a*(U0U)a*", "ab \n", 0x1680, "def", "ab")), "ab", + 'upgraded strings A5 removes all unicode whitespace'); + is(unpack("A*", pack("U", 0x1680)), "", + 'upgraded strings A* with nothing left'); +} +{ + # Testing unpack . and .! + is(unpack(".", "ABCD"), 0, "offset at start of string is 0"); + is(unpack(".", ""), 0, "offset at start of empty string is 0"); + is(unpack("x3.", "ABCDEF"), 3, "simple offset works"); + is(unpack("x3.", "ABC"), 3, "simple offset at end of string works"); + is(unpack("x3.0", "ABC"), 0, "self offset is 0"); + is(unpack("x3(x2.)", "ABCDEF"), 2, "offset is relative to inner group"); + is(unpack("x3(X2.)", "ABCDEF"), -2, + "negative offset relative to inner group"); + is(unpack("x3(X2.2)", "ABCDEF"), 1, "offset is relative to inner group"); + is(unpack("x3(x2.0)", "ABCDEF"), 0, "self offset in group is still 0"); + is(unpack("x3(x2.2)", "ABCDEF"), 5, "offset counts groups"); + is(unpack("x3(x2.*)", "ABCDEF"), 5, "star offset is relative to start"); + + my $high = chr(8188) x 6; + is(unpack("x3(x2.)", $high), 2, "utf8 offset is relative to inner group"); + is(unpack("x3(X2.)", $high), -2, + "utf8 negative offset relative to inner group"); + is(unpack("x3(X2.2)", $high), 1, "utf8 offset counts groups"); + is(unpack("x3(x2.0)", $high), 0, "utf8 self offset in group is still 0"); + is(unpack("x3(x2.2)", $high), 5, "utf8 offset counts groups"); + is(unpack("x3(x2.*)", $high), 5, "utf8 star offset is relative to start"); + + is(unpack("U0x3(x2.)", $high), 2, + "U0 mode utf8 offset is relative to inner group"); + is(unpack("U0x3(X2.)", $high), -2, + "U0 mode utf8 negative offset relative to inner group"); + is(unpack("U0x3(X2.2)", $high), 1, + "U0 mode utf8 offset counts groups"); + is(unpack("U0x3(x2.0)", $high), 0, + "U0 mode utf8 self offset in group is still 0"); + is(unpack("U0x3(x2.2)", $high), 5, + "U0 mode utf8 offset counts groups"); + is(unpack("U0x3(x2.*)", $high), 5, + "U0 mode utf8 star offset is relative to start"); + + is(unpack("x3(x2.!)", $high), 2*3, + "utf8 offset is relative to inner group"); + is(unpack("x3(X2.!)", $high), -2*3, + "utf8 negative offset relative to inner group"); + is(unpack("x3(X2.!2)", $high), 1*3, + "utf8 offset counts groups"); + is(unpack("x3(x2.!0)", $high), 0, + "utf8 self offset in group is still 0"); + is(unpack("x3(x2.!2)", $high), 5*3, + "utf8 offset counts groups"); + is(unpack("x3(x2.!*)", $high), 5*3, + "utf8 star offset is relative to start"); + + is(unpack("U0x3(x2.!)", $high), 2, + "U0 mode utf8 offset is relative to inner group"); + is(unpack("U0x3(X2.!)", $high), -2, + "U0 mode utf8 negative offset relative to inner group"); + is(unpack("U0x3(X2.!2)", $high), 1, + "U0 mode utf8 offset counts groups"); + is(unpack("U0x3(x2.!0)", $high), 0, + "U0 mode utf8 self offset in group is still 0"); + is(unpack("U0x3(x2.!2)", $high), 5, + "U0 mode utf8 offset counts groups"); + is(unpack("U0x3(x2.!*)", $high), 5, + "U0 mode utf8 star offset is relative to start"); +} +{ + # Testing pack . and .! + is(pack("(a)5 .", 1..5, 3), "123", ". relative to string start, shorten"); + eval { () = pack("(a)5 .", 1..5, -3) }; + like($@, qr{'\.' outside of string in pack}, "Proper error message"); + is(pack("(a)5 .", 1..5, 8), "12345\x00\x00\x00", + ". relative to string start, extend"); + is(pack("(a)5 .", 1..5, 5), "12345", ". relative to string start, keep"); + + is(pack("(a)5 .0", 1..5, -3), "12", + ". relative to string current, shorten"); + is(pack("(a)5 .0", 1..5, 2), "12345\x00\x00", + ". relative to string current, extend"); + is(pack("(a)5 .0", 1..5, 0), "12345", + ". relative to string current, keep"); + + is(pack("(a)5 (.)", 1..5, -3), "12", + ". relative to group, shorten"); + is(pack("(a)5 (.)", 1..5, 2), "12345\x00\x00", + ". relative to group, extend"); + is(pack("(a)5 (.)", 1..5, 0), "12345", + ". relative to group, keep"); + + is(pack("(a)3 ((a)2 .)", 1..5, -2), "1", + ". relative to group, shorten"); + is(pack("(a)3 ((a)2 .)", 1..5, 2), "12345", + ". relative to group, keep"); + is(pack("(a)3 ((a)2 .)", 1..5, 4), "12345\x00\x00", + ". relative to group, extend"); + + is(pack("(a)3 ((a)2 .2)", 1..5, 2), "12", + ". relative to counted group, shorten"); + is(pack("(a)3 ((a)2 .2)", 1..5, 7), "12345\x00\x00", + ". relative to counted group, extend"); + is(pack("(a)3 ((a)2 .2)", 1..5, 5), "12345", + ". relative to counted group, keep"); + + is(pack("(a)3 ((a)2 .*)", 1..5, 2), "12", + ". relative to start, shorten"); + is(pack("(a)3 ((a)2 .*)", 1..5, 7), "12345\x00\x00", + ". relative to start, extend"); + is(pack("(a)3 ((a)2 .*)", 1..5, 5), "12345", + ". relative to start, keep"); + + is(pack('(a)5 (. @2 a)', 1..5, -3, "a"), "12\x00\x00a", + ". based shrink properly updates group starts"); + + is(pack("(W)3 ((W)2 .)", 0x301..0x305, -2), "\x{301}", + "utf8 . relative to group, shorten"); + is(pack("(W)3 ((W)2 .)", 0x301..0x305, 2), + "\x{301}\x{302}\x{303}\x{304}\x{305}", + "utf8 . relative to group, keep"); + is(pack("(W)3 ((W)2 .)", 0x301..0x305, 4), + "\x{301}\x{302}\x{303}\x{304}\x{305}\x00\x00", + "utf8 . relative to group, extend"); + + is(pack("(W)3 ((W)2 .!)", 0x301..0x305, -2), "\x{301}\x{302}", + "utf8 . relative to group, shorten"); + is(pack("(W)3 ((W)2 .!)", 0x301..0x305, 4), + "\x{301}\x{302}\x{303}\x{304}\x{305}", + "utf8 . relative to group, keep"); + is(pack("(W)3 ((W)2 .!)", 0x301..0x305, 6), + "\x{301}\x{302}\x{303}\x{304}\x{305}\x00\x00", + "utf8 . relative to group, extend"); + + is(pack('(W)5 (. @2 a)', 0x301..0x305, -3, "a"), + "\x{301}\x{302}\x00\x00a", + "utf8 . based shrink properly updates group starts"); +} +{ + # Testing @! + is(pack('a* @3', "abcde"), "abc", 'Test basic @'); + is(pack('a* @!3', "abcde"), "abc", 'Test basic @!'); + is(pack('a* @2', "\x{301}\x{302}\x{303}\x{304}\x{305}"), "\x{301}\x{302}", + 'Test basic utf8 @'); + is(pack('a* @!2', "\x{301}\x{302}\x{303}\x{304}\x{305}"), "\x{301}", + 'Test basic utf8 @!'); + + is(unpack('@4 a*', "abcde"), "e", 'Test basic @'); + is(unpack('@!4 a*', "abcde"), "e", 'Test basic @!'); + is(unpack('@4 a*', "\x{301}\x{302}\x{303}\x{304}\x{305}"), "\x{305}", + 'Test basic utf8 @'); + is(unpack('@!4 a*', "\x{301}\x{302}\x{303}\x{304}\x{305}"), + "\x{303}\x{304}\x{305}", 'Test basic utf8 @!'); +}