1#!./perl 2# FIXME - why isn't this -w clean in maint? 3 4BEGIN { 5 chdir 't' if -d 't'; 6 @INC = '../lib'; 7 require './test.pl'; 8} 9 10# This is truth in an if statement, and could be a skip message 11my $no_endianness = $] > 5.009 ? '' : 12 "Endianness pack modifiers not available on this perl"; 13my $no_signedness = $] > 5.009 ? '' : 14 "Signed/unsigned pack modifiers not available on this perl"; 15 16plan tests => 13864; 17 18use strict; 19# use warnings; 20use Config; 21 22my $Is_EBCDIC = (defined $Config{ebcdic} && $Config{ebcdic} eq 'define'); 23my $Perl = which_perl(); 24my @valid_errors = (qr/^Invalid type '\w'/); 25 26my $ByteOrder = 'unknown'; 27my $maybe_not_avail = '(?:hto[bl]e|[bl]etoh)'; 28if ($no_endianness) { 29 push @valid_errors, qr/^Invalid type '[<>]'/; 30} elsif ($Config{byteorder} =~ /^1234(?:5678)?$/) { 31 $ByteOrder = 'little'; 32 $maybe_not_avail = '(?:htobe|betoh)'; 33} 34elsif ($Config{byteorder} =~ /^(?:8765)?4321$/) { 35 $ByteOrder = 'big'; 36 $maybe_not_avail = '(?:htole|letoh)'; 37} 38else { 39 push @valid_errors, qr/^Can't (?:un)?pack (?:big|little)-endian .*? on this platform/; 40} 41 42if ($no_signedness) { 43 push @valid_errors, qr/^'!' allowed only after types sSiIlLxX in (?:un)?pack/; 44} 45 46for my $size ( 16, 32, 64 ) { 47 if (defined $Config{"u${size}size"} and $Config{"u${size}size"} != ($size >> 3)) { 48 push @valid_errors, qr/^Perl_my_$maybe_not_avail$size\(\) not available/; 49 } 50} 51 52my $IsTwosComplement = pack('i', -1) eq "\xFF" x $Config{intsize}; 53print "# \$IsTwosComplement = $IsTwosComplement\n"; 54 55sub is_valid_error 56{ 57 my $err = shift; 58 59 for my $e (@valid_errors) { 60 $err =~ $e and return 1; 61 } 62 63 return 0; 64} 65 66sub encode_list { 67 my @result = map {_qq($_)} @_; 68 if (@result == 1) { 69 return @result; 70 } 71 return '(' . join (', ', @result) . ')'; 72} 73 74 75sub list_eq ($$) { 76 my ($l, $r) = @_; 77 return 0 unless @$l == @$r; 78 for my $i (0..$#$l) { 79 if (defined $l->[$i]) { 80 return 0 unless defined ($r->[$i]) && $l->[$i] eq $r->[$i]; 81 } else { 82 return 0 if defined $r->[$i] 83 } 84 } 85 return 1; 86} 87 88############################################################################## 89# 90# Here starteth the tests 91# 92 93{ 94 my $format = "c2 x5 C C x s d i l a6"; 95 # Need the expression in here to force ary[5] to be numeric. This avoids 96 # test2 failing because ary2 goes str->numeric->str and ary doesn't. 97 my @ary = (1,-100,127,128,32767,987.654321098 / 100.0,12345,123456, 98 "abcdef"); 99 my $foo = pack($format,@ary); 100 my @ary2 = unpack($format,$foo); 101 102 is($#ary, $#ary2); 103 104 my $out1=join(':',@ary); 105 my $out2=join(':',@ary2); 106 # Using long double NVs may introduce greater accuracy than wanted. 107 $out1 =~ s/:9\.87654321097999\d*:/:9.87654321098:/; 108 $out2 =~ s/:9\.87654321097999\d*:/:9.87654321098:/; 109 is($out1, $out2); 110 111 like($foo, qr/def/); 112} 113# How about counting bits? 114 115{ 116 my $x; 117 is( ($x = unpack("%32B*", "\001\002\004\010\020\040\100\200\377")), 16 ); 118 119 is( ($x = unpack("%32b69", "\001\002\004\010\020\040\100\200\017")), 12 ); 120 121 is( ($x = unpack("%32B69", "\001\002\004\010\020\040\100\200\017")), 9 ); 122} 123 124{ 125 my $sum = 129; # ASCII 126 $sum = 103 if $Is_EBCDIC; 127 128 my $x; 129 is( ($x = unpack("%32B*", "Now is the time for all good blurfl")), $sum ); 130 131 my $foo; 132 open(BIN, $Perl) || die "Can't open $Perl: $!\n"; 133 sysread BIN, $foo, 8192; 134 close BIN; 135 136 $sum = unpack("%32b*", $foo); 137 my $longway = unpack("b*", $foo); 138 is( $sum, $longway =~ tr/1/1/ ); 139} 140 141{ 142 my $x; 143 is( ($x = unpack("I",pack("I", 0xFFFFFFFF))), 0xFFFFFFFF ); 144} 145 146{ 147 # check 'w' 148 my @x = (5,130,256,560,32000,3097152,268435455,1073741844, 2**33, 149 '4503599627365785','23728385234614992549757750638446'); 150 my $x = pack('w*', @x); 151 my $y = pack 'H*', '0581028200843081fa0081bd8440ffffff7f8480808014A0808'. 152 '0800087ffffffffffdb19caefe8e1eeeea0c2e1e3e8ede1ee6e'; 153 154 is($x, $y); 155 156 my @y = unpack('w*', $y); 157 my $a; 158 while ($a = pop @x) { 159 my $b = pop @y; 160 is($a, $b); 161 } 162 163 @y = unpack('w2', $x); 164 165 is(scalar(@y), 2); 166 is($y[1], 130); 167 $x = pack('w*', 5000000000); $y = ''; 168 eval { 169 use Math::BigInt; 170 $y = pack('w*', Math::BigInt::->new(5000000000)); 171 }; 172 is($x, $y); 173 174 $x = pack 'w', ~0; 175 $y = pack 'w', (~0).''; 176 is($x, $y); 177 is(unpack ('w',$x), ~0); 178 is(unpack ('w',$y), ~0); 179 180 $x = pack 'w', ~0 - 1; 181 $y = pack 'w', (~0) - 2; 182 183 if (~0 - 1 == (~0) - 2) { 184 is($x, $y, "NV arithmetic"); 185 } else { 186 isnt($x, $y, "IV/NV arithmetic"); 187 } 188 cmp_ok(unpack ('w',$x), '==', ~0 - 1); 189 cmp_ok(unpack ('w',$y), '==', ~0 - 2); 190 191 # These should spot that pack 'w' is using NV, not double, on platforms 192 # where IVs are smaller than doubles, and harmlessly pass elsewhere. 193 # (tests for change 16861) 194 my $x0 = 2**54+3; 195 my $y0 = 2**54-2; 196 197 $x = pack 'w', $x0; 198 $y = pack 'w', $y0; 199 200 if ($x0 == $y0) { 201 is($x, $y, "NV arithmetic"); 202 } else { 203 isnt($x, $y, "IV/NV arithmetic"); 204 } 205 cmp_ok(unpack ('w',$x), '==', $x0); 206 cmp_ok(unpack ('w',$y), '==', $y0); 207} 208 209 210{ 211 print "# test exceptions\n"; 212 my $x; 213 eval { $x = unpack 'w', pack 'C*', 0xff, 0xff}; 214 like($@, qr/^Unterminated compressed integer/); 215 216 eval { $x = unpack 'w', pack 'C*', 0xff, 0xff, 0xff, 0xff}; 217 like($@, qr/^Unterminated compressed integer/); 218 219 eval { $x = unpack 'w', pack 'C*', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 220 like($@, qr/^Unterminated compressed integer/); 221 222 eval { $x = pack 'w', -1 }; 223 like ($@, qr/^Cannot compress negative numbers/); 224 225 eval { $x = pack 'w', '1'x(1 + length ~0) . 'e0' }; 226 like ($@, qr/^Can only compress unsigned integers/); 227 228 # Check that the warning behaviour on the modifiers !, < and > is as we 229 # expect it for this perl. 230 my $can_endian = $no_endianness ? '' : 'sSiIlLqQjJfFdDpP'; 231 my $can_shriek = 'sSiIlL'; 232 $can_shriek .= 'nNvV' unless $no_signedness; 233 # h and H can't do either, so act as sanity checks in blead 234 foreach my $base (split '', 'hHsSiIlLqQjJfFdDpPnNvV') { 235 foreach my $mod ('', '<', '>', '!', '<!', '>!', '!<', '!>') { 236 SKIP: { 237 # Avoid void context warnings. 238 my $a = eval {pack "$base$mod"}; 239 skip "pack can't $base", 1 if $@ =~ /^Invalid type '\w'/; 240 # Which error you get when 2 would be possible seems to be emergent 241 # behaviour of pack's format parser. 242 243 my $fails_shriek = $mod =~ /!/ && index ($can_shriek, $base) == -1; 244 my $fails_endian = $mod =~ /[<>]/ && index ($can_endian, $base) == -1; 245 my $shriek_first = $mod =~ /^!/; 246 247 if ($no_endianness and ($mod eq '<!' or $mod eq '>!')) { 248 # The ! isn't seem as part of $base. Instead it's seen as a modifier 249 # on > or < 250 $fails_shriek = 1; 251 undef $fails_endian; 252 } elsif ($fails_shriek and $fails_endian) { 253 if ($shriek_first) { 254 undef $fails_endian; 255 } 256 } 257 258 if ($fails_endian) { 259 if ($no_endianness) { 260 # < and > are seen as pattern letters, not modifiers 261 like ($@, qr/^Invalid type '[<>]'/, "pack can't $base$mod"); 262 } else { 263 like ($@, qr/^'[<>]' allowed only after types/, 264 "pack can't $base$mod"); 265 } 266 } elsif ($fails_shriek) { 267 like ($@, qr/^'!' allowed only after types/, 268 "pack can't $base$mod"); 269 } else { 270 is ($@, '', "pack can $base$mod"); 271 } 272 } 273 } 274 } 275 276 SKIP: { 277 skip $no_endianness, 2*3 + 2*8 if $no_endianness; 278 for my $mod (qw( ! < > )) { 279 eval { $x = pack "a$mod", 42 }; 280 like ($@, qr/^'$mod' allowed only after types \S+ in pack/); 281 282 eval { $x = unpack "a$mod", 'x'x8 }; 283 like ($@, qr/^'$mod' allowed only after types \S+ in unpack/); 284 } 285 286 for my $mod (qw( <> >< !<> !>< <!> >!< <>! ><! )) { 287 eval { $x = pack "sI${mod}s", 42, 47, 11 }; 288 like ($@, qr/^Can't use both '<' and '>' after type 'I' in pack/); 289 290 eval { $x = unpack "sI${mod}s", 'x'x16 }; 291 like ($@, qr/^Can't use both '<' and '>' after type 'I' in unpack/); 292 } 293 } 294 295 SKIP: { 296 # Is this a stupid thing to do on VMS, VOS and other unusual platforms? 297 298 skip("-- the IEEE infinity model is unavailable in this configuration.", 1) 299 if (($^O eq 'VMS') && !defined($Config{useieee})); 300 301 skip("-- $^O has serious fp indigestion on w-packed infinities", 1) 302 if ( 303 ($^O eq 'mpeix') 304 || 305 ($^O eq 'ultrix') 306 || 307 ($^O =~ /^svr4/ && -f "/etc/issue" && -f "/etc/.relid") # NCR MP-RAS 308 ); 309 310 my $inf = eval '2**1000000'; 311 312 skip("Couldn't generate infinity - got error '$@'", 1) 313 unless defined $inf and $inf == $inf / 2 and $inf + 1 == $inf; 314 315 local our $TODO; 316 $TODO = "VOS needs a fix for posix-1022 to pass this test." 317 if ($^O eq 'vos'); 318 319 eval { $x = pack 'w', $inf }; 320 like ($@, qr/^Cannot compress integer/, "Cannot compress integer"); 321 } 322 323 SKIP: { 324 325 skip("-- the full range of an IEEE double may not be available in this configuration.", 3) 326 if (($^O eq 'VMS') && !defined($Config{useieee})); 327 328 skip("-- $^O does not like 2**1023", 3) 329 if (($^O eq 'ultrix')); 330 331 # This should be about the biggest thing possible on an IEEE double 332 my $big = eval '2**1023'; 333 334 skip("Couldn't generate 2**1023 - got error '$@'", 3) 335 unless defined $big and $big != $big / 2; 336 337 eval { $x = pack 'w', $big }; 338 is ($@, '', "Should be able to pack 'w', $big # 2**1023"); 339 340 my $y = eval {unpack 'w', $x}; 341 is ($@, '', 342 "Should be able to unpack 'w' the result of pack 'w', $big # 2**1023"); 343 344 # I'm getting about 1e-16 on FreeBSD 345 my $quotient = int (100 * ($y - $big) / $big); 346 ok($quotient < 2 && $quotient > -2, 347 "Round trip pack, unpack 'w' of $big is within 1% ($quotient%)"); 348 } 349 350} 351 352print "# test the 'p' template\n"; 353 354# literals 355is(unpack("p",pack("p","foo")), "foo"); 356SKIP: { 357 skip $no_endianness, 2 if $no_endianness; 358 is(unpack("p<",pack("p<","foo")), "foo"); 359 is(unpack("p>",pack("p>","foo")), "foo"); 360} 361# scalars 362is(unpack("p",pack("p",239)), 239); 363SKIP: { 364 skip $no_endianness, 2 if $no_endianness; 365 is(unpack("p<",pack("p<",239)), 239); 366 is(unpack("p>",pack("p>",239)), 239); 367} 368 369# temps 370sub foo { my $a = "a"; return $a . $a++ . $a++ } 371{ 372 use warnings; 373 my $warning; 374 local $SIG{__WARN__} = sub { 375 $warning = $_[0]; 376 }; 377 my $junk = pack("p", &foo); 378 379 like($warning, qr/temporary val/); 380} 381 382# undef should give null pointer 383like(pack("p", undef), qr/^\0+$/); 384SKIP: { 385 skip $no_endianness, 2 if $no_endianness; 386 like(pack("p<", undef), qr/^\0+$/); 387 like(pack("p>", undef), qr/^\0+$/); 388} 389 390# Check for optimizer bug (e.g. Digital Unix GEM cc with -O4 on DU V4.0B gives 391# 4294967295 instead of -1) 392# see #ifdef __osf__ in pp.c pp_unpack 393is((unpack("i",pack("i",-1))), -1); 394 395print "# test the pack lengths of s S i I l L n N v V + modifiers\n"; 396 397my @lengths = ( 398 qw(s 2 S 2 i -4 I -4 l 4 L 4 n 2 N 4 v 2 V 4 n! 2 N! 4 v! 2 V! 4), 399 's!' => $Config{shortsize}, 'S!' => $Config{shortsize}, 400 'i!' => $Config{intsize}, 'I!' => $Config{intsize}, 401 'l!' => $Config{longsize}, 'L!' => $Config{longsize}, 402); 403 404while (my ($base, $expect) = splice @lengths, 0, 2) { 405 my @formats = ($base); 406 $base =~ /^[nv]/i or push @formats, "$base>", "$base<"; 407 for my $format (@formats) { 408 SKIP: { 409 skip $no_endianness, 1 if $no_endianness && $format =~ m/[<>]/; 410 skip $no_signedness, 1 if $no_signedness && $format =~ /[nNvV]!/; 411 my $len = length(pack($format, 0)); 412 if ($expect > 0) { 413 is($expect, $len, "format '$format'"); 414 } else { 415 $expect = -$expect; 416 ok ($len >= $expect, "format '$format'") || 417 print "# format '$format' has length $len, expected >= $expect\n"; 418 } 419 } 420 } 421} 422 423 424print "# test unpack-pack lengths\n"; 425 426my @templates = qw(c C i I s S l L n N v V f d q Q); 427 428foreach my $base (@templates) { 429 my @tmpl = ($base); 430 $base =~ /^[cnv]/i or push @tmpl, "$base>", "$base<"; 431 foreach my $t (@tmpl) { 432 SKIP: { 433 my @t = eval { unpack("$t*", pack("$t*", 12, 34)) }; 434 435 skip "cannot pack '$t' on this perl", 4 436 if is_valid_error($@); 437 438 is( $@, '', "Template $t works"); 439 is(scalar @t, 2); 440 441 is($t[0], 12); 442 is($t[1], 34); 443 } 444 } 445} 446 447{ 448 # uuencode/decode 449 450 # Note that first uuencoding known 'text' data and then checking the 451 # binary values of the uuencoded version would not be portable between 452 # character sets. Uuencoding is meant for encoding binary data, not 453 # text data. 454 455 my $in = pack 'C*', 0 .. 255; 456 457 # just to be anal, we do some random tr/`/ / 458 my $uu = <<'EOUU'; 459M` $"`P0%!@<("0H+# T.#Q`1$A,4%187&!D:&QP='A\@(2(C)"4F)R@I*BLL 460M+2XO,#$R,S0U-C<X.3H[/#T^/T!!0D-$149'2$E*2TQ-3D]045)35%565UA9 461M6EM<75Y?8&%B8V1E9F=H:6IK;&UN;W!Q<G-T=79W>'EZ>WQ]?G^`@8*#A(6& 462MAXB)BHN,C8Z/D)&2DY25EI>8F9J;G)V>GZ"AHJ.DI::GJ*FJJZRMKJ^PL;*S 463MM+6VM[BYNKN\O;Z_P,'"P\3%QL?(R<K+S,W.S]#1TM/4U=;7V-G:V]S=WM_@ 464?X>+CY.7FY^CIZNOL[>[O\/'R\_3U]O?X^?K[_/W^_P ` 465EOUU 466 467 $_ = $uu; 468 tr/ /`/; 469 470 is(pack('u', $in), $_); 471 472 is(unpack('u', $uu), $in); 473 474 $in = "\x1f\x8b\x08\x08\x58\xdc\xc4\x35\x02\x03\x4a\x41\x50\x55\x00\xf3\x2a\x2d\x2e\x51\x48\xcc\xcb\x2f\xc9\x48\x2d\x52\x08\x48\x2d\xca\x51\x28\x2d\x4d\xce\x4f\x49\x2d\xe2\x02\x00\x64\x66\x60\x5c\x1a\x00\x00\x00"; 475 $uu = <<'EOUU'; 476M'XL("%C<Q#4"`TI!4%4`\RHM+E%(S,LOR4@M4@A(+<I1*"U-SD])+>("`&1F 477&8%P:```` 478EOUU 479 480 is(unpack('u', $uu), $in); 481 482# This is identical to the above except that backquotes have been 483# changed to spaces 484 485 $uu = <<'EOUU'; 486M'XL("%C<Q#4" TI!4%4 \RHM+E%(S,LOR4@M4@A(+<I1*"U-SD])+>(" &1F 487&8%P: 488EOUU 489 490 # ' # Grr 491 is(unpack('u', $uu), $in); 492 493} 494 495# test the ascii template types (A, a, Z) 496 497foreach ( 498['p', 'A*', "foo\0bar\0 ", "foo\0bar\0 "], 499['p', 'A11', "foo\0bar\0 ", "foo\0bar\0 "], 500['u', 'A*', "foo\0bar \0", "foo\0bar"], 501['u', 'A8', "foo\0bar \0", "foo\0bar"], 502['p', 'a*', "foo\0bar\0 ", "foo\0bar\0 "], 503['p', 'a11', "foo\0bar\0 ", "foo\0bar\0 \0\0"], 504['u', 'a*', "foo\0bar \0", "foo\0bar \0"], 505['u', 'a8', "foo\0bar \0", "foo\0bar "], 506['p', 'Z*', "foo\0bar\0 ", "foo\0bar\0 \0"], 507['p', 'Z11', "foo\0bar\0 ", "foo\0bar\0 \0\0"], 508['p', 'Z3', "foo", "fo\0"], 509['u', 'Z*', "foo\0bar \0", "foo"], 510['u', 'Z8', "foo\0bar \0", "foo"], 511) 512{ 513 my ($what, $template, $in, $out) = @$_; 514 my $got = $what eq 'u' ? (unpack $template, $in) : (pack $template, $in); 515 unless (is($got, $out)) { 516 my $un = $what eq 'u' ? 'un' : ''; 517 print "# ${un}pack ('$template', "._qq($in).') gave '._qq($out). 518 ' not '._qq($got)."\n"; 519 } 520} 521 522print "# packing native shorts/ints/longs\n"; 523 524is(length(pack("s!", 0)), $Config{shortsize}); 525is(length(pack("i!", 0)), $Config{intsize}); 526is(length(pack("l!", 0)), $Config{longsize}); 527ok(length(pack("s!", 0)) <= length(pack("i!", 0))); 528ok(length(pack("i!", 0)) <= length(pack("l!", 0))); 529is(length(pack("i!", 0)), length(pack("i", 0))); 530 531sub numbers { 532 my $base = shift; 533 my @formats = ($base); 534 $base =~ /^[silqjfdp]/i and push @formats, "$base>", "$base<"; 535 for my $format (@formats) { 536 numbers_with_total ($format, undef, @_); 537 } 538} 539 540sub numbers_with_total { 541 my $format = shift; 542 my $total = shift; 543 if (!defined $total) { 544 foreach (@_) { 545 $total += $_; 546 } 547 } 548 print "# numbers test for $format\n"; 549 foreach (@_) { 550 SKIP: { 551 my $out = eval {unpack($format, pack($format, $_))}; 552 skip "cannot pack '$format' on this perl", 2 553 if is_valid_error($@); 554 555 is($@, '', "no error"); 556 is($out, $_, "unpack pack $format $_"); 557 } 558 } 559 560 my $skip_if_longer_than = ~0; # "Infinity" 561 if (~0 - 1 == ~0) { 562 # If we're running with -DNO_PERLPRESERVE_IVUV and NVs don't preserve all 563 # UVs (in which case ~0 is NV, ~0-1 will be the same NV) then we can't 564 # correctly in perl calculate UV totals for long checksums, as pp_unpack 565 # is using UV maths, and we've only got NVs. 566 $skip_if_longer_than = $Config{nv_preserves_uv_bits}; 567 } 568 569 foreach ('', 1, 2, 3, 15, 16, 17, 31, 32, 33, 53, 54, 63, 64, 65) { 570 SKIP: { 571 my $sum = eval {unpack "%$_$format*", pack "$format*", @_}; 572 skip "cannot pack '$format' on this perl", 3 573 if is_valid_error($@); 574 575 is($@, '', "no error"); 576 ok(defined $sum, "sum bits $_, format $format defined"); 577 578 my $len = $_; # Copy, so that we can reassign '' 579 $len = 16 unless length $len; 580 581 SKIP: { 582 skip "cannot test checksums over $skip_if_longer_than bits", 1 583 if $len > $skip_if_longer_than; 584 585 # Our problem with testing this portably is that the checksum code in 586 # pp_unpack is able to cast signed to unsigned, and do modulo 2**n 587 # arithmetic in unsigned ints, which perl has no operators to do. 588 # (use integer; does signed ints, which won't wrap on UTS, which is just 589 # fine with ANSI, but not with most people's assumptions. 590 # This is why we need to supply the totals for 'Q' as there's no way in 591 # perl to calculate them, short of unpack '%0Q' (is that documented?) 592 # ** returns NVs; make sure it's IV. 593 my $max = 1 + 2 * (int (2 ** ($len-1))-1); # The max possible checksum 594 my $max_p1 = $max + 1; 595 my ($max_is_integer, $max_p1_is_integer); 596 $max_p1_is_integer = 1 unless $max_p1 + 1 == $max_p1; 597 $max_is_integer = 1 if $max - 1 < ~0; 598 599 my $calc_sum; 600 if (ref $total) { 601 $calc_sum = &$total($len); 602 } else { 603 $calc_sum = $total; 604 # Shift into range by some multiple of the total 605 my $mult = $max_p1 ? int ($total / $max_p1) : undef; 606 # Need this to make sure that -1 + (~0+1) is ~0 (ie still integer) 607 $calc_sum = $total - $mult; 608 $calc_sum -= $mult * $max; 609 if ($calc_sum < 0) { 610 $calc_sum += 1; 611 $calc_sum += $max; 612 } 613 } 614 if ($calc_sum == $calc_sum - 1 && $calc_sum == $max_p1) { 615 # we're into floating point (either by getting out of the range of 616 # UV arithmetic, or because we're doing a floating point checksum) 617 # and our calculation of the checksum has become rounded up to 618 # max_checksum + 1 619 $calc_sum = 0; 620 } 621 622 if ($calc_sum == $sum) { # HAS to be ==, not eq (so no is()). 623 pass ("unpack '%$_$format' gave $sum"); 624 } else { 625 my $delta = 1.000001; 626 if ($format =~ tr /dDfF// 627 && ($calc_sum <= $sum * $delta && $calc_sum >= $sum / $delta)) { 628 pass ("unpack '%$_$format' gave $sum, expected $calc_sum"); 629 } else { 630 my $text = ref $total ? &$total($len) : $total; 631 fail; 632 print "# For list (" . join (", ", @_) . ") (total $text)" 633 . " packed with $format unpack '%$_$format' gave $sum," 634 . " expected $calc_sum\n"; 635 } 636 } 637 } 638 } 639 } 640} 641 642numbers ('c', -128, -1, 0, 1, 127); 643numbers ('C', 0, 1, 127, 128, 255); 644numbers ('s', -32768, -1, 0, 1, 32767); 645numbers ('S', 0, 1, 32767, 32768, 65535); 646numbers ('i', -2147483648, -1, 0, 1, 2147483647); 647numbers ('I', 0, 1, 2147483647, 2147483648, 4294967295); 648numbers ('l', -2147483648, -1, 0, 1, 2147483647); 649numbers ('L', 0, 1, 2147483647, 2147483648, 4294967295); 650numbers ('s!', -32768, -1, 0, 1, 32767); 651numbers ('S!', 0, 1, 32767, 32768, 65535); 652numbers ('i!', -2147483648, -1, 0, 1, 2147483647); 653numbers ('I!', 0, 1, 2147483647, 2147483648, 4294967295); 654numbers ('l!', -2147483648, -1, 0, 1, 2147483647); 655numbers ('L!', 0, 1, 2147483647, 2147483648, 4294967295); 656numbers ('n', 0, 1, 32767, 32768, 65535); 657numbers ('v', 0, 1, 32767, 32768, 65535); 658numbers ('N', 0, 1, 2147483647, 2147483648, 4294967295); 659numbers ('V', 0, 1, 2147483647, 2147483648, 4294967295); 660numbers ('n!', -32768, -1, 0, 1, 32767); 661numbers ('v!', -32768, -1, 0, 1, 32767); 662numbers ('N!', -2147483648, -1, 0, 1, 2147483647); 663numbers ('V!', -2147483648, -1, 0, 1, 2147483647); 664# All these should have exact binary representations: 665numbers ('f', -1, 0, 0.5, 42, 2**34); 666numbers ('d', -(2**34), -1, 0, 1, 2**34); 667## These don't, but 'd' is NV. XXX wrong, it's double 668#numbers ('d', -1, 0, 1, 1-exp(-1), -exp(1)); 669 670numbers_with_total ('q', -1, 671 -9223372036854775808, -1, 0, 1,9223372036854775807); 672# This total is icky, but the true total is 2**65-1, and need a way to generate 673# the epxected checksum on any system including those where NVs can preserve 674# 65 bits. (long double is 128 bits on sparc, so they certainly can) 675# or where rounding is down not up on binary conversion (crays) 676numbers_with_total ('Q', sub { 677 my $len = shift; 678 $len = 65 if $len > 65; # unmasked total is 2**65-1 here 679 my $total = 1 + 2 * (int (2**($len - 1)) - 1); 680 return 0 if $total == $total - 1; # Overflowed integers 681 return $total; # NVs still accurate to nearest integer 682 }, 683 0, 1,9223372036854775807, 9223372036854775808, 684 18446744073709551615); 685 686print "# pack nvNV byteorders\n"; 687 688is(pack("n", 0xdead), "\xde\xad"); 689is(pack("v", 0xdead), "\xad\xde"); 690is(pack("N", 0xdeadbeef), "\xde\xad\xbe\xef"); 691is(pack("V", 0xdeadbeef), "\xef\xbe\xad\xde"); 692 693SKIP: { 694 skip $no_signedness, 4 if $no_signedness; 695 is(pack("n!", 0xdead), "\xde\xad"); 696 is(pack("v!", 0xdead), "\xad\xde"); 697 is(pack("N!", 0xdeadbeef), "\xde\xad\xbe\xef"); 698 is(pack("V!", 0xdeadbeef), "\xef\xbe\xad\xde"); 699} 700 701print "# test big-/little-endian conversion\n"; 702 703sub byteorder 704{ 705 my $format = shift; 706 print "# byteorder test for $format\n"; 707 for my $value (@_) { 708 SKIP: { 709 my($nat,$be,$le) = eval { map { pack $format.$_, $value } '', '>', '<' }; 710 skip "cannot pack '$format' on this perl", 5 711 if is_valid_error($@); 712 713 print "# [$value][$nat][$be][$le][$@]\n"; 714 715 SKIP: { 716 skip "cannot compare native byteorder with big-/little-endian", 1 717 if $ByteOrder eq 'unknown'; 718 719 is($nat, $ByteOrder eq 'big' ? $be : $le); 720 } 721 is($be, reverse($le)); 722 my @x = eval { unpack "$format$format>$format<", $nat.$be.$le }; 723 724 print "# [$value][", join('][', @x), "][$@]\n"; 725 726 is($@, ''); 727 is($x[0], $x[1]); 728 is($x[0], $x[2]); 729 } 730 } 731} 732 733byteorder('s', -32768, -1, 0, 1, 32767); 734byteorder('S', 0, 1, 32767, 32768, 65535); 735byteorder('i', -2147483648, -1, 0, 1, 2147483647); 736byteorder('I', 0, 1, 2147483647, 2147483648, 4294967295); 737byteorder('l', -2147483648, -1, 0, 1, 2147483647); 738byteorder('L', 0, 1, 2147483647, 2147483648, 4294967295); 739byteorder('j', -2147483648, -1, 0, 1, 2147483647); 740byteorder('J', 0, 1, 2147483647, 2147483648, 4294967295); 741byteorder('s!', -32768, -1, 0, 1, 32767); 742byteorder('S!', 0, 1, 32767, 32768, 65535); 743byteorder('i!', -2147483648, -1, 0, 1, 2147483647); 744byteorder('I!', 0, 1, 2147483647, 2147483648, 4294967295); 745byteorder('l!', -2147483648, -1, 0, 1, 2147483647); 746byteorder('L!', 0, 1, 2147483647, 2147483648, 4294967295); 747byteorder('q', -9223372036854775808, -1, 0, 1, 9223372036854775807); 748byteorder('Q', 0, 1, 9223372036854775807, 9223372036854775808, 18446744073709551615); 749byteorder('f', -1, 0, 0.5, 42, 2**34); 750byteorder('F', -1, 0, 0.5, 42, 2**34); 751byteorder('d', -(2**34), -1, 0, 1, 2**34); 752byteorder('D', -(2**34), -1, 0, 1, 2**34); 753 754print "# test negative numbers\n"; 755 756SKIP: { 757 skip "platform is not using two's complement for negative integers", 120 758 unless $IsTwosComplement; 759 760 for my $format (qw(s i l j s! i! l! q)) { 761 SKIP: { 762 my($nat,$be,$le) = eval { map { pack $format.$_, -1 } '', '>', '<' }; 763 skip "cannot pack '$format' on this perl", 15 764 if is_valid_error($@); 765 766 my $len = length $nat; 767 is($_, "\xFF"x$len) for $nat, $be, $le; 768 769 my(@val,@ref); 770 if ($len >= 8) { 771 @val = (-2, -81985529216486896, -9223372036854775808); 772 @ref = ("\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFE", 773 "\xFE\xDC\xBA\x98\x76\x54\x32\x10", 774 "\x80\x00\x00\x00\x00\x00\x00\x00"); 775 } 776 elsif ($len >= 4) { 777 @val = (-2, -19088744, -2147483648); 778 @ref = ("\xFF\xFF\xFF\xFE", 779 "\xFE\xDC\xBA\x98", 780 "\x80\x00\x00\x00"); 781 } 782 else { 783 @val = (-2, -292, -32768); 784 @ref = ("\xFF\xFE", 785 "\xFE\xDC", 786 "\x80\x00"); 787 } 788 for my $x (@ref) { 789 if ($len > length $x) { 790 $x = $x . "\xFF" x ($len - length $x); 791 } 792 } 793 794 for my $i (0 .. $#val) { 795 my($nat,$be,$le) = eval { map { pack $format.$_, $val[$i] } '', '>', '<' }; 796 is($@, ''); 797 798 SKIP: { 799 skip "cannot compare native byteorder with big-/little-endian", 1 800 if $ByteOrder eq 'unknown'; 801 802 is($nat, $ByteOrder eq 'big' ? $be : $le); 803 } 804 805 is($be, $ref[$i]); 806 is($be, reverse($le)); 807 } 808 } 809 } 810} 811 812{ 813 # / 814 815 my ($x, $y, $z); 816 eval { ($x) = unpack '/a*','hello' }; 817 like($@, qr!'/' must follow a numeric type!); 818 undef $x; 819 eval { $x = unpack '/a*','hello' }; 820 like($@, qr!'/' must follow a numeric type!); 821 822 undef $x; 823 eval { ($z,$x,$y) = unpack 'a3/A C/a* C/Z', "003ok \003yes\004z\000abc" }; 824 is($@, ''); 825 is($z, 'ok'); 826 is($x, 'yes'); 827 is($y, 'z'); 828 undef $z; 829 eval { $z = unpack 'a3/A C/a* C/Z', "003ok \003yes\004z\000abc" }; 830 is($@, ''); 831 is($z, 'ok'); 832 833 834 undef $x; 835 eval { ($x) = pack '/a*','hello' }; 836 like($@, qr!Invalid type '/'!); 837 undef $x; 838 eval { $x = pack '/a*','hello' }; 839 like($@, qr!Invalid type '/'!); 840 841 $z = pack 'n/a* N/Z* w/A*','string','hi there ','etc'; 842 my $expect = "\000\006string\0\0\0\012hi there \000\003etc"; 843 is($z, $expect); 844 845 undef $x; 846 $expect = 'hello world'; 847 eval { ($x) = unpack ("w/a", chr (11) . "hello world!")}; 848 is($x, $expect); 849 is($@, ''); 850 851 undef $x; 852 # Doing this in scalar context used to fail. 853 eval { $x = unpack ("w/a", chr (11) . "hello world!")}; 854 is($@, ''); 855 is($x, $expect); 856 857 foreach ( 858 ['a/a*/a*', '212ab345678901234567','ab3456789012'], 859 ['a/a*/a*', '3012ab345678901234567', 'ab3456789012'], 860 ['a/a*/b*', '212ab', $Is_EBCDIC ? '100000010100' : '100001100100'], 861 ) 862 { 863 my ($pat, $in, $expect) = @$_; 864 undef $x; 865 eval { ($x) = unpack $pat, $in }; 866 is($@, ''); 867 is($x, $expect) || 868 printf "# list unpack ('$pat', '$in') gave %s, expected '$expect'\n", 869 encode_list ($x); 870 871 undef $x; 872 eval { $x = unpack $pat, $in }; 873 is($@, ''); 874 is($x, $expect) || 875 printf "# scalar unpack ('$pat', '$in') gave %s, expected '$expect'\n", 876 encode_list ($x); 877 } 878 879 # / with # 880 881 my $pattern = <<'EOU'; 882 a3/A # Count in ASCII 883 C/a* # Count in a C char 884 C/Z # Count in a C char but skip after \0 885EOU 886 887 $x = $y = $z =undef; 888 eval { ($z,$x,$y) = unpack $pattern, "003ok \003yes\004z\000abc" }; 889 is($@, ''); 890 is($z, 'ok'); 891 is($x, 'yes'); 892 is($y, 'z'); 893 undef $x; 894 eval { $z = unpack $pattern, "003ok \003yes\004z\000abc" }; 895 is($@, ''); 896 is($z, 'ok'); 897 898 $pattern = <<'EOP'; 899 n/a* # Count as network short 900 w/A* # Count a BER integer 901EOP 902 $expect = "\000\006string\003etc"; 903 $z = pack $pattern,'string','etc'; 904 is($z, $expect); 905} 906 907 908SKIP: { 909 skip("(EBCDIC and) version strings are bad idea", 2) if $Is_EBCDIC; 910 911 is("1.20.300.4000", sprintf "%vd", pack("U*",1,20,300,4000)); 912 is("1.20.300.4000", sprintf "%vd", pack(" U*",1,20,300,4000)); 913} 914isnt(v1.20.300.4000, sprintf "%vd", pack("C0U*",1,20,300,4000)); 915 916my $rslt = $Is_EBCDIC ? "156 67" : "199 162"; 917is(join(" ", unpack("C*", chr(0x1e2))), $rslt); 918 919# does pack U create Unicode? 920is(ord(pack('U', 300)), 300); 921 922# does unpack U deref Unicode? 923is((unpack('U', chr(300)))[0], 300); 924 925# is unpack U the reverse of pack U for Unicode string? 926is("@{[unpack('U*', pack('U*', 100, 200, 300))]}", "100 200 300"); 927 928# is unpack U the reverse of pack U for byte string? 929is("@{[unpack('U*', pack('U*', 100, 200))]}", "100 200"); 930 931 932SKIP: { 933 skip "Not for EBCDIC", 4 if $Is_EBCDIC; 934 935 # does unpack C unravel pack U? 936 is("@{[unpack('C*', pack('U*', 100, 200))]}", "100 195 136"); 937 938 # does pack U0C create Unicode? 939 is("@{[pack('U0C*', 100, 195, 136)]}", v100.v200); 940 941 # does pack C0U create characters? 942 is("@{[pack('C0U*', 100, 200)]}", pack("C*", 100, 195, 136)); 943 944 # does unpack U0U on byte data warn? 945 { 946 local $SIG{__WARN__} = sub { $@ = "@_" }; 947 my @null = unpack('U0U', chr(255)); 948 like($@, qr/^Malformed UTF-8 character /); 949 } 950} 951 952{ 953 my $p = pack 'i*', -2147483648, ~0, 0, 1, 2147483647; 954 my (@a); 955 # bug - % had to be at the start of the pattern, no leading whitespace or 956 # comments. %i! didn't work at all. 957 foreach my $pat ('%32i*', ' %32i*', "# Muhahahaha\n%32i*", '%32i* ', 958 '%32i!*', ' %32i!*', "\n#\n#\n\r \t\f%32i!*", '%32i!*#') { 959 @a = unpack $pat, $p; 960 is($a[0], 0xFFFFFFFF) || print "# $pat\n"; 961 @a = scalar unpack $pat, $p; 962 is($a[0], 0xFFFFFFFF) || print "# $pat\n"; 963 } 964 965 966 $p = pack 'I*', 42, 12; 967 # Multiline patterns in scalar context failed. 968 foreach my $pat ('I', <<EOPOEMSNIPPET, 'I#I', 'I # I', 'I # !!!') { 969# On the Ning Nang Nong 970# Where the Cows go Bong! 971# And the Monkeys all say Boo! 972I 973EOPOEMSNIPPET 974 @a = unpack $pat, $p; 975 is(scalar @a, 1); 976 is($a[0], 42); 977 @a = scalar unpack $pat, $p; 978 is(scalar @a, 1); 979 is($a[0], 42); 980 } 981 982 # shorts (of all flavours) didn't calculate checksums > 32 bits with floating 983 # point, so a pathologically long pattern would wrap at 32 bits. 984 my $pat = "\xff\xff"x65538; # Start with it long, to save any copying. 985 foreach (4,3,2,1,0) { 986 my $len = 65534 + $_; 987 is(unpack ("%33n$len", $pat), 65535 * $len); 988 } 989} 990 991 992# pack x X @ 993foreach ( 994 ['x', "N", "\0"], 995 ['x4', "N", "\0"x4], 996 ['xX', "N", ""], 997 ['xXa*', "Nick", "Nick"], 998 ['a5Xa5', "cameL", "llama", "camellama"], 999 ['@4', 'N', "\0"x4], 1000 ['a*@8a*', 'Camel', 'Dromedary', "Camel\0\0\0Dromedary"], 1001 ['a*@4a', 'Perl rules', '!', 'Perl!'], 1002) 1003{ 1004 my ($template, @in) = @$_; 1005 my $out = pop @in; 1006 my $got = eval {pack $template, @in}; 1007 is($@, ''); 1008 is($out, $got) || 1009 printf "# pack ('$template', %s) gave %s expected %s\n", 1010 encode_list (@in), encode_list ($got), encode_list ($out); 1011} 1012 1013# unpack x X @ 1014foreach ( 1015 ['x', "N"], 1016 ['xX', "N"], 1017 ['xXa*', "Nick", "Nick"], 1018 ['a5Xa5', "camellama", "camel", "llama"], 1019 ['@3', "ice"], 1020 ['@2a2', "water", "te"], 1021 ['a*@1a3', "steam", "steam", "tea"], 1022) 1023{ 1024 my ($template, $in, @out) = @$_; 1025 my @got = eval {unpack $template, $in}; 1026 is($@, ''); 1027 ok (list_eq (\@got, \@out)) || 1028 printf "# list unpack ('$template', %s) gave %s expected %s\n", 1029 _qq($in), encode_list (@got), encode_list (@out); 1030 1031 my $got = eval {unpack $template, $in}; 1032 is($@, ''); 1033 @out ? is( $got, $out[0] ) # 1 or more items; should get first 1034 : ok( !defined $got ) # 0 items; should get undef 1035 or printf "# scalar unpack ('$template', %s) gave %s expected %s\n", 1036 _qq($in), encode_list ($got), encode_list ($out[0]); 1037} 1038 1039{ 1040 my $t = 'Z*Z*'; 1041 my ($u, $v) = qw(foo xyzzy); 1042 my $p = pack($t, $u, $v); 1043 my @u = unpack($t, $p); 1044 is(scalar @u, 2); 1045 is($u[0], $u); 1046 is($u[1], $v); 1047} 1048 1049{ 1050 is((unpack("w/a*", "\x02abc"))[0], "ab"); 1051 1052 # "w/a*" should be seen as one unit 1053 1054 is(scalar unpack("w/a*", "\x02abc"), "ab"); 1055} 1056 1057SKIP: { 1058 print "# group modifiers\n"; 1059 1060 skip $no_endianness, 3 * 2 + 3 * 2 + 1 if $no_endianness; 1061 1062 for my $t (qw{ (s<)< (sl>s)> (s(l(sl)<l)s)< }) { 1063 print "# testing pattern '$t'\n"; 1064 eval { ($_) = unpack($t, 'x'x18); }; 1065 is($@, ''); 1066 eval { $_ = pack($t, (0)x6); }; 1067 is($@, ''); 1068 } 1069 1070 for my $t (qw{ (s<)> (sl>s)< (s(l(sl)<l)s)> }) { 1071 print "# testing pattern '$t'\n"; 1072 eval { ($_) = unpack($t, 'x'x18); }; 1073 like($@, qr/Can't use '[<>]' in a group with different byte-order in unpack/); 1074 eval { $_ = pack($t, (0)x6); }; 1075 like($@, qr/Can't use '[<>]' in a group with different byte-order in pack/); 1076 } 1077 1078 is(pack('L<L>', (0x12345678)x2), 1079 pack('(((L1)1)<)(((L)1)1)>1', (0x12345678)x2)); 1080} 1081 1082{ 1083 sub compress_template { 1084 my $t = shift; 1085 for my $mod (qw( < > )) { 1086 $t =~ s/((?:(?:[SILQJFDP]!?$mod|[^SILQJFDP\W]!?)(?:\d+|\*|\[(?:[^]]+)\])?\/?){2,})/ 1087 my $x = $1; $x =~ s!$mod!!g ? "($x)$mod" : $x /ieg; 1088 } 1089 return $t; 1090 } 1091 1092 my %templates = ( 1093 's<' => [-42], 1094 's<c2x![S]S<' => [-42, -11, 12, 4711], 1095 '(i<j<[s]l<)3' => [-11, -22, -33, 1000000, 1100, 2201, 3302, 1096 -1000000, 32767, -32768, 1, -123456789 ], 1097 '(I!<4(J<2L<)3)5' => [1 .. 65], 1098 'q<Q<' => [-50000000005, 60000000006], 1099 'f<F<d<' => [3.14159, 111.11, 2222.22], 1100 'D<cCD<' => [1e42, -128, 255, 1e-42], 1101 'n/a*' => ['/usr/bin/perl'], 1102 'C/a*S</A*L</Z*I</a*' => [qw(Just another Perl hacker)], 1103 ); 1104 1105 for my $tle (sort keys %templates) { 1106 my @d = @{$templates{$tle}}; 1107 my $tbe = $tle; 1108 $tbe =~ y/</>/; 1109 for my $t ($tbe, $tle) { 1110 my $c = compress_template($t); 1111 print "# '$t' -> '$c'\n"; 1112 SKIP: { 1113 my $p1 = eval { pack $t, @d }; 1114 skip "cannot pack '$t' on this perl", 5 if is_valid_error($@); 1115 my $p2 = eval { pack $c, @d }; 1116 is($@, ''); 1117 is($p1, $p2); 1118 s!(/[aAZ])\*!$1!g for $t, $c; 1119 my @u1 = eval { unpack $t, $p1 }; 1120 is($@, ''); 1121 my @u2 = eval { unpack $c, $p2 }; 1122 is($@, ''); 1123 is(join('!', @u1), join('!', @u2)); 1124 } 1125 } 1126 } 1127} 1128 1129{ 1130 # from Wolfgang Laun: fix in change #13163 1131 1132 my $s = 'ABC' x 10; 1133 my $t = '*'; 1134 my $x = ord($t); 1135 my $buf = pack( 'Z*/A* C', $s, $x ); 1136 my $y; 1137 1138 my $h = $buf; 1139 $h =~ s/[^[:print:]]/./g; 1140 ( $s, $y ) = unpack( "Z*/A* C", $buf ); 1141 is($h, "30.ABCABCABCABCABCABCABCABCABCABC$t"); 1142 is(length $buf, 34); 1143 is($s, "ABCABCABCABCABCABCABCABCABCABC"); 1144 is($y, $x); 1145} 1146 1147{ 1148 # from Wolfgang Laun: fix in change #13288 1149 1150 eval { my $t=unpack("P*", "abc") }; 1151 like($@, qr/'P' must have an explicit size/); 1152} 1153 1154{ # Grouping constructs 1155 my (@a, @b); 1156 @a = unpack '(SL)', pack 'SLSLSL', 67..90; 1157 is("@a", "67 68"); 1158 @a = unpack '(SL)3', pack 'SLSLSL', 67..90; 1159 @b = (67..72); 1160 is("@a", "@b"); 1161 @a = unpack '(SL)3', pack 'SLSLSLSL', 67..90; 1162 is("@a", "@b"); 1163 @a = unpack '(SL)[3]', pack 'SLSLSLSL', 67..90; 1164 is("@a", "@b"); 1165 @a = unpack '(SL)[2] SL', pack 'SLSLSLSL', 67..90; 1166 is("@a", "@b"); 1167 @a = unpack 'A/(SL)', pack 'ASLSLSLSL', 3, 67..90; 1168 is("@a", "@b"); 1169 @a = unpack 'A/(SL)SL', pack 'ASLSLSLSL', 2, 67..90; 1170 is("@a", "@b"); 1171 @a = unpack '(SL)*', pack 'SLSLSLSL', 67..90; 1172 @b = (67..74); 1173 is("@a", "@b"); 1174 @a = unpack '(SL)*SL', pack 'SLSLSLSL', 67..90; 1175 is("@a", "@b"); 1176 eval { @a = unpack '(*SL)', '' }; 1177 like($@, qr/\(\)-group starts with a count/); 1178 eval { @a = unpack '(3SL)', '' }; 1179 like($@, qr/\(\)-group starts with a count/); 1180 eval { @a = unpack '([3]SL)', '' }; 1181 like($@, qr/\(\)-group starts with a count/); 1182 eval { @a = pack '(*SL)' }; 1183 like($@, qr/\(\)-group starts with a count/); 1184 @a = unpack '(SL)3 SL', pack '(SL)4', 67..74; 1185 is("@a", "@b"); 1186 @a = unpack '(SL)3 SL', pack '(SL)[4]', 67..74; 1187 is("@a", "@b"); 1188 @a = unpack '(SL)3 SL', pack '(SL)*', 67..74; 1189 is("@a", "@b"); 1190} 1191 1192{ # more on grouping (W.Laun) 1193 use warnings; 1194 my $warning; 1195 local $SIG{__WARN__} = sub { 1196 $warning = $_[0]; 1197 }; 1198 # @ absolute within ()-group 1199 my $badc = pack( '(a)*', unpack( '(@1a @0a @2)*', 'abcd' ) ); 1200 is( $badc, 'badc' ); 1201 my @b = ( 1, 2, 3 ); 1202 my $buf = pack( '(@1c)((@2C)@3c)', @b ); 1203 is( $buf, "\0\1\0\0\2\3" ); 1204 my @a = unpack( '(@1c)((@2c)@3c)', $buf ); 1205 is( "@a", "@b" ); 1206 1207 # various unpack count/code scenarios 1208 my @Env = ( a => 'AAA', b => 'BBB' ); 1209 my $env = pack( 'S(S/A*S/A*)*', @Env/2, @Env ); 1210 1211 # unpack full length - ok 1212 my @pup = unpack( 'S/(S/A* S/A*)', $env ); 1213 is( "@pup", "@Env" ); 1214 1215 # warn when count/code goes beyond end of string 1216 # \0002 \0001 a \0003 AAA \0001 b \0003 BBB 1217 # 2 4 5 7 10 1213 1218 eval { @pup = unpack( 'S/(S/A* S/A*)', substr( $env, 0, 13 ) ) }; 1219 like( $@, qr{length/code after end of string} ); 1220 1221 # postfix repeat count 1222 $env = pack( '(S/A* S/A*)' . @Env/2, @Env ); 1223 1224 # warn when count/code goes beyond end of string 1225 # \0001 a \0003 AAA \0001 b \0003 BBB 1226 # 2 3c 5 8 10 11 13 16 1227 eval { @pup = unpack( '(S/A* S/A*)' . @Env/2, substr( $env, 0, 11 ) ) }; 1228 like( $@, qr{length/code after end of string} ); 1229 1230 # catch stack overflow/segfault 1231 eval { $_ = pack( ('(' x 105) . 'A' . (')' x 105) ); }; 1232 like( $@, qr{Too deeply nested \(\)-groups} ); 1233} 1234 1235{ # syntax checks (W.Laun) 1236 use warnings; 1237 my @warning; 1238 local $SIG{__WARN__} = sub { 1239 push( @warning, $_[0] ); 1240 }; 1241 eval { my $s = pack( 'Ax![4c]A', 1..5 ); }; 1242 like( $@, qr{Malformed integer in \[\]} ); 1243 1244 eval { my $buf = pack( '(c/*a*)', 'AAA', 'BB' ); }; 1245 like( $@, qr{'/' does not take a repeat count} ); 1246 1247 eval { my @inf = unpack( 'c/1a', "\x03AAA\x02BB" ); }; 1248 like( $@, qr{'/' does not take a repeat count} ); 1249 1250 eval { my @inf = unpack( 'c/*a', "\x03AAA\x02BB" ); }; 1251 like( $@, qr{'/' does not take a repeat count} ); 1252 1253 # white space where possible 1254 my @Env = ( a => 'AAA', b => 'BBB' ); 1255 my $env = pack( ' S ( S / A* S / A* )* ', @Env/2, @Env ); 1256 my @pup = unpack( ' S / ( S / A* S / A* ) ', $env ); 1257 is( "@pup", "@Env" ); 1258 1259 # white space in 4 wrong places 1260 for my $temp ( 'A ![4]', 'A [4]', 'A *', 'A 4' ){ 1261 eval { my $s = pack( $temp, 'B' ); }; 1262 like( $@, qr{Invalid type } ); 1263 } 1264 1265 # warning for commas 1266 @warning = (); 1267 my $x = pack( 'I,A', 4, 'X' ); 1268 like( $warning[0], qr{Invalid type ','} ); 1269 1270 # comma warning only once 1271 @warning = (); 1272 $x = pack( 'C(C,C)C,C', 65..71 ); 1273 like( scalar @warning, 1 ); 1274 1275 # forbidden code in [] 1276 eval { my $x = pack( 'A[@4]', 'XXXX' ); }; 1277 like( $@, qr{Within \[\]-length '\@' not allowed} ); 1278 1279 # @ repeat default 1 1280 my $s = pack( 'AA@A', 'A', 'B', 'C' ); 1281 my @c = unpack( 'AA@A', $s ); 1282 is( $s, 'AC' ); 1283 is( "@c", "A C C" ); 1284 1285 # no unpack code after / 1286 eval { my @a = unpack( "C/", "\3" ); }; 1287 like( $@, qr{Code missing after '/'} ); 1288 1289 SKIP: { 1290 skip $no_endianness, 6 if $no_endianness; 1291 1292 # modifier warnings 1293 @warning = (); 1294 $x = pack "I>>s!!", 47, 11; 1295 ($x) = unpack "I<<l!>!>", 'x'x20; 1296 is(scalar @warning, 5); 1297 like($warning[0], qr/Duplicate modifier '>' after 'I' in pack/); 1298 like($warning[1], qr/Duplicate modifier '!' after 's' in pack/); 1299 like($warning[2], qr/Duplicate modifier '<' after 'I' in unpack/); 1300 like($warning[3], qr/Duplicate modifier '!' after 'l' in unpack/); 1301 like($warning[4], qr/Duplicate modifier '>' after 'l' in unpack/); 1302 } 1303} 1304 1305{ # Repeat count [SUBEXPR] 1306 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 1307 s! S! i! I! l! L! j J); 1308 my $G; 1309 if (eval { pack 'q', 1 } ) { 1310 push @codes, qw(q Q); 1311 } else { 1312 push @codes, qw(s S); # Keep the count the same 1313 } 1314 if (eval { pack 'D', 1 } ) { 1315 push @codes, 'D'; 1316 } else { 1317 push @codes, 'd'; # Keep the count the same 1318 } 1319 1320 push @codes, map { /^[silqjfdp]/i ? ("$_<", "$_>") : () } @codes; 1321 1322 my %val; 1323 @val{@codes} = map { / [Xx] (?{ undef }) 1324 | [AZa] (?{ 'something' }) 1325 | C (?{ 214 }) 1326 | c (?{ 114 }) 1327 | [Bb] (?{ '101' }) 1328 | [Hh] (?{ 'b8' }) 1329 | [svnSiIlVNLqQjJ] (?{ 10111 }) 1330 | [FfDd] (?{ 1.36514538e67 }) 1331 | [pP] (?{ "try this buffer" }) 1332 /x; $^R } @codes; 1333 my @end = (0x12345678, 0x23456781, 0x35465768, 0x15263748); 1334 my $end = "N4"; 1335 1336 for my $type (@codes) { 1337 my @list = $val{$type}; 1338 @list = () unless defined $list[0]; 1339 for my $count ('', '3', '[11]') { 1340 my $c = 1; 1341 $c = $1 if $count =~ /(\d+)/; 1342 my @list1 = @list; 1343 @list1 = (@list1) x $c unless $type =~ /[XxAaZBbHhP]/; 1344 for my $groupend ('', ')2', ')[8]') { 1345 my $groupbegin = ($groupend ? '(' : ''); 1346 $c = 1; 1347 $c = $1 if $groupend =~ /(\d+)/; 1348 my @list2 = (@list1) x $c; 1349 1350 SKIP: { 1351 my $junk1 = "$groupbegin $type$count $groupend"; 1352 # print "# junk1=$junk1\n"; 1353 my $p = eval { pack $junk1, @list2 }; 1354 skip "cannot pack '$type' on this perl", 12 1355 if is_valid_error($@); 1356 die "pack $junk1 failed: $@" if $@; 1357 1358 my $half = int( (length $p)/2 ); 1359 for my $move ('', "X$half", "X!$half", 'x1', 'x!8', "x$half") { 1360 my $junk = "$junk1 $move"; 1361 # print "# junk='$junk', list=(@list2)\n"; 1362 $p = pack "$junk $end", @list2, @end; 1363 my @l = unpack "x[$junk] $end", $p; 1364 is(scalar @l, scalar @end); 1365 is("@l", "@end", "skipping x[$junk]"); 1366 } 1367 } 1368 } 1369 } 1370 } 1371} 1372 1373# / is recognized after spaces in scalar context 1374# XXXX no spaces are allowed in pack... In pack only before the slash... 1375is(scalar unpack('A /A Z20', pack 'A/A* Z20', 'bcde', 'xxxxx'), 'bcde'); 1376is(scalar unpack('A /A /A Z20', '3004bcde'), 'bcde'); 1377 1378{ # X! and x! 1379 my $t = 'C[3] x!8 C[2]'; 1380 my @a = (0x73..0x77); 1381 my $p = pack($t, @a); 1382 is($p, "\x73\x74\x75\0\0\0\0\0\x76\x77"); 1383 my @b = unpack $t, $p; 1384 is(scalar @b, scalar @a); 1385 is("@b", "@a", 'x!8'); 1386 $t = 'x[5] C[6] X!8 C[2]'; 1387 @a = (0x73..0x7a); 1388 $p = pack($t, @a); 1389 is($p, "\0\0\0\0\0\x73\x74\x75\x79\x7a"); 1390 @b = unpack $t, $p; 1391 @a = (0x73..0x75, 0x79, 0x7a, 0x79, 0x7a); 1392 is(scalar @b, scalar @a); 1393 is("@b", "@a"); 1394} 1395 1396{ # struct {char c1; double d; char cc[2];} 1397 my $t = 'C x![d] d C[2]'; 1398 my @a = (173, 1.283476517e-45, 42, 215); 1399 my $p = pack $t, @a; 1400 ok( length $p); 1401 my @b = unpack "$t X[$t] $t", $p; # Extract, step back, extract again 1402 is(scalar @b, 2 * scalar @a); 1403 $b = "@b"; 1404 $b =~ s/(?:17000+|16999+)\d+(e-45) /17$1 /gi; # stringification is gamble 1405 is($b, "@a @a"); 1406 1407 my $warning; 1408 local $SIG{__WARN__} = sub { 1409 $warning = $_[0]; 1410 }; 1411 @b = unpack "x[C] x[$t] X[$t] X[C] $t", "$p\0"; 1412 1413 is($warning, undef); 1414 is(scalar @b, scalar @a); 1415 $b = "@b"; 1416 $b =~ s/(?:17000+|16999+)\d+(e-45) /17$1 /gi; # stringification is gamble 1417 is($b, "@a"); 1418} 1419 1420is(length(pack("j", 0)), $Config{ivsize}); 1421is(length(pack("J", 0)), $Config{uvsize}); 1422is(length(pack("F", 0)), $Config{nvsize}); 1423 1424numbers ('j', -2147483648, -1, 0, 1, 2147483647); 1425numbers ('J', 0, 1, 2147483647, 2147483648, 4294967295); 1426numbers ('F', -(2**34), -1, 0, 1, 2**34); 1427SKIP: { 1428 my $t = eval { unpack("D*", pack("D", 12.34)) }; 1429 1430 skip "Long doubles not in use", 166 if $@ =~ /Invalid type/; 1431 1432 is(length(pack("D", 0)), $Config{longdblsize}); 1433 numbers ('D', -(2**34), -1, 0, 1, 2**34); 1434} 1435 1436# Maybe this knowledge needs to be "global" for all of pack.t 1437# Or a "can checksum" which would effectively be all the number types" 1438my %cant_checksum = map {$_=> 1} qw(A Z u w); 1439# not a b B h H 1440foreach my $template (qw(A Z c C s S i I l L n N v V q Q j J f d F D u U w)) { 1441 SKIP: { 1442 my $packed = eval {pack "${template}4", 1, 4, 9, 16}; 1443 if ($@) { 1444 die unless $@ =~ /Invalid type '$template'/; 1445 skip ("$template not supported on this perl", 1446 $cant_checksum{$template} ? 4 : 8); 1447 } 1448 my @unpack4 = unpack "${template}4", $packed; 1449 my @unpack = unpack "${template}*", $packed; 1450 my @unpack1 = unpack "${template}", $packed; 1451 my @unpack1s = scalar unpack "${template}", $packed; 1452 my @unpack4s = scalar unpack "${template}4", $packed; 1453 my @unpacks = scalar unpack "${template}*", $packed; 1454 1455 my @tests = ( ["${template}4 vs ${template}*", \@unpack4, \@unpack], 1456 ["scalar ${template} ${template}", \@unpack1s, \@unpack1], 1457 ["scalar ${template}4 vs ${template}", \@unpack4s, \@unpack1], 1458 ["scalar ${template}* vs ${template}", \@unpacks, \@unpack1], 1459 ); 1460 1461 unless ($cant_checksum{$template}) { 1462 my @unpack4_c = unpack "\%${template}4", $packed; 1463 my @unpack_c = unpack "\%${template}*", $packed; 1464 my @unpack1_c = unpack "\%${template}", $packed; 1465 my @unpack1s_c = scalar unpack "\%${template}", $packed; 1466 my @unpack4s_c = scalar unpack "\%${template}4", $packed; 1467 my @unpacks_c = scalar unpack "\%${template}*", $packed; 1468 1469 push @tests, 1470 ( ["% ${template}4 vs ${template}*", \@unpack4_c, \@unpack_c], 1471 ["% scalar ${template} ${template}", \@unpack1s_c, \@unpack1_c], 1472 ["% scalar ${template}4 vs ${template}*", \@unpack4s_c, \@unpack_c], 1473 ["% scalar ${template}* vs ${template}*", \@unpacks_c, \@unpack_c], 1474 ); 1475 } 1476 foreach my $test (@tests) { 1477 ok (list_eq ($test->[1], $test->[2]), $test->[0]) || 1478 printf "# unpack gave %s expected %s\n", 1479 encode_list (@{$test->[1]}), encode_list (@{$test->[2]}); 1480 } 1481 } 1482} 1483 1484ok(pack('u2', 'AA'), "[perl #8026]"); # used to hang and eat RAM in perl 5.7.2 1485 1486$_ = pack('c', 65); # 'A' would not be EBCDIC-friendly 1487eval "unpack('c')"; 1488like ($@, qr/Not enough arguments for unpack/, 1489 "one-arg unpack (change #18751) is not in maint"); 1490 1491{ 1492 my $a = "X\t01234567\n" x 100; 1493 my @a = unpack("(a1 c/a)*", $a); 1494 is(scalar @a, 200, "[perl #15288]"); 1495 is($a[-1], "01234567\n", "[perl #15288]"); 1496 is($a[-2], "X", "[perl #15288]"); 1497} 1498 1499# checksums 1500{ 1501 # verify that unpack advances correctly wrt a checksum 1502 my (@x) = unpack("b10a", "abcd"); 1503 my (@y) = unpack("%b10a", "abcd"); 1504 is($x[1], $y[1], "checksum advance ok"); 1505 1506 # verify that the checksum is not overflowed with C0 1507 is(unpack("C0%128U", "abcd"), unpack("U0%128U", "abcd"), "checksum not overflowed"); 1508} 1509 1510{ 1511 # U0 and C0 must be scoped 1512 my (@x) = unpack("a(U0)U", "b\341\277\274"); 1513 is($x[0], 'b', 'before scope'); 1514 is($x[1], 225, 'after scope'); 1515} 1516 1517{ 1518 # counted length prefixes shouldn't change C0/U0 mode 1519 # (note the length is actually 0 in this test) 1520 is(join(',', unpack("aC/UU", "b\0\341\277\274")), 'b,225'); 1521 is(join(',', unpack("aC/CU", "b\0\341\277\274")), 'b,225'); 1522 is(join(',', unpack("aU0C/UU", "b\0\341\277\274")), 'b,8188'); 1523 is(join(',', unpack("aU0C/CU", "b\0\341\277\274")), 'b,8188'); 1524} 1525 1526{ 1527 # "Z0" (bug #34062) 1528 my (@x) = unpack("C*", pack("CZ0", 1, "b")); 1529 is(join(',', @x), '1', 'pack Z0 doesn\'t destroy the character before'); 1530} 1531