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Slow down split in scalar context :-)
[perl5.git] / t / op / split.t
CommitLineData
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1#!./perl
2
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3BEGIN {
4 chdir 't' if -d 't';
5 @INC = '../lib';
3a2263fe 6 require './test.pl';
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7}
8
941446f6 9plan tests => 251;
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10
11$FS = ':';
12
13$_ = 'a:b:c';
14
15($a,$b,$c) = split($FS,$_);
16
3a2263fe 17is(join(';',$a,$b,$c), 'a;b;c');
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18
19@ary = split(/:b:/);
c1a7495a 20$cnt = split(/:b:/);
3a2263fe 21is(join("$_",@ary), 'aa:b:cc');
c1a7495a 22is($cnt, scalar(@ary));
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23
24$_ = "abc\n";
4765795a 25my @xyz = (@ary = split(//));
c1a7495a 26$cnt = split(//);
3a2263fe 27is(join(".",@ary), "a.b.c.\n");
c1a7495a 28is($cnt, scalar(@ary));
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29
30$_ = "a:b:c::::";
31@ary = split(/:/);
c1a7495a 32$cnt = split(/:/);
3a2263fe 33is(join(".",@ary), "a.b.c");
c1a7495a 34is($cnt, scalar(@ary));
2e1b3b7e 35
378cc40b 36$_ = join(':',split(' '," a b\tc \t d "));
3a2263fe 37is($_, 'a:b:c:d');
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38@ary = split(' '," a b\tc \t d ");
39$cnt = split(' '," a b\tc \t d ");
40is($cnt, scalar(@ary));
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41
42$_ = join(':',split(/ */,"foo bar bie\tdoll"));
3a2263fe 43is($_ , "f:o:o:b:a:r:b:i:e:\t:d:o:l:l");
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44@ary = split(/ */,"foo bar bie\tdoll");
45$cnt = split(/ */,"foo bar bie\tdoll");
46is($cnt, scalar(@ary));
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47
48$_ = join(':', 'foo', split(/ /,'a b c'), 'bar');
3a2263fe 49is($_, "foo:a:b::c:bar");
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50@ary = split(/ /,'a b c');
51$cnt = split(/ /,'a b c');
52is($cnt, scalar(@ary));
378cc40b 53
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54# Can we say how many fields to split to?
55$_ = join(':', split(' ','1 2 3 4 5 6', 3));
3a2263fe 56is($_, '1:2:3 4 5 6');
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57@ary = split(' ','1 2 3 4 5 6', 3);
58$cnt = split(' ','1 2 3 4 5 6', 3);
59is($cnt, scalar(@ary));
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60
61# Can we do it as a variable?
62$x = 4;
63$_ = join(':', split(' ','1 2 3 4 5 6', $x));
3a2263fe 64is($_, '1:2:3:4 5 6');
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65@ary = split(' ','1 2 3 4 5 6', $x);
66$cnt = split(' ','1 2 3 4 5 6', $x);
67is($cnt, scalar(@ary));
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68
69# Does the 999 suppress null field chopping?
70$_ = join(':', split(/:/,'1:2:3:4:5:6:::', 999));
3a2263fe 71is($_ , '1:2:3:4:5:6:::');
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72@ary = split(/:/,'1:2:3:4:5:6:::', 999);
73$cnt = split(/:/,'1:2:3:4:5:6:::', 999);
74is($cnt, scalar(@ary));
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75
76# Does assignment to a list imply split to one more field than that?
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77$foo = runperl( switches => ['-Dt'], stderr => 1, prog => '($a,$b)=split;' );
78ok($foo =~ /DEBUGGING/ || $foo =~ /const\n?\Q(IV(3))\E/);
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79
80# Can we say how many fields to split to when assigning to a list?
81($a,$b) = split(' ','1 2 3 4 5 6', 2);
82$_ = join(':',$a,$b);
3a2263fe 83is($_, '1:2 3 4 5 6');
a687059c 84
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85# do subpatterns generate additional fields (without trailing nulls)?
86$_ = join '|', split(/,|(-)/, "1-10,20,,,");
3a2263fe 87is($_, "1|-|10||20");
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88@ary = split(/,|(-)/, "1-10,20,,,");
89$cnt = split(/,|(-)/, "1-10,20,,,");
90is($cnt, scalar(@ary));
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91
92# do subpatterns generate additional fields (with a limit)?
93$_ = join '|', split(/,|(-)/, "1-10,20,,,", 10);
3a2263fe 94is($_, "1|-|10||20||||||");
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95@ary = split(/,|(-)/, "1-10,20,,,", 10);
96$cnt = split(/,|(-)/, "1-10,20,,,", 10);
97is($cnt, scalar(@ary));
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98
99# is the 'two undefs' bug fixed?
100(undef, $a, undef, $b) = qw(1 2 3 4);
3a2263fe 101is("$a|$b", "2|4");
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102
103# .. even for locals?
104{
105 local(undef, $a, undef, $b) = qw(1 2 3 4);
3a2263fe 106 is("$a|$b", "2|4");
e1fa4fd3 107}
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108
109# check splitting of null string
110$_ = join('|', split(/x/, '',-1), 'Z');
3a2263fe 111is($_, "Z");
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112@ary = split(/x/, '',-1);
113$cnt = split(/x/, '',-1);
114is($cnt, scalar(@ary));
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115
116$_ = join('|', split(/x/, '', 1), 'Z');
3a2263fe 117is($_, "Z");
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118@ary = split(/x/, '', 1);
119$cnt = split(/x/, '', 1);
120is($cnt, scalar(@ary));
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121
122$_ = join('|', split(/(p+)/,'',-1), 'Z');
3a2263fe 123is($_, "Z");
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124@ary = split(/(p+)/,'',-1);
125$cnt = split(/(p+)/,'',-1);
126is($cnt, scalar(@ary));
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127
128$_ = join('|', split(/.?/, '',-1), 'Z');
3a2263fe 129is($_, "Z");
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130@ary = split(/.?/, '',-1);
131$cnt = split(/.?/, '',-1);
132is($cnt, scalar(@ary));
fb73857a 133
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134
135# Are /^/m patterns scanned?
136$_ = join '|', split(/^a/m, "a b a\na d a", 20);
3a2263fe 137is($_, "| b a\n| d a");
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138@ary = split(/^a/m, "a b a\na d a", 20);
139$cnt = split(/^a/m, "a b a\na d a", 20);
140is($cnt, scalar(@ary));
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141
142# Are /$/m patterns scanned?
143$_ = join '|', split(/a$/m, "a b a\na d a", 20);
3a2263fe 144is($_, "a b |\na d |");
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145@ary = split(/a$/m, "a b a\na d a", 20);
146$cnt = split(/a$/m, "a b a\na d a", 20);
147is($cnt, scalar(@ary));
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148
149# Are /^/m patterns scanned?
150$_ = join '|', split(/^aa/m, "aa b aa\naa d aa", 20);
3a2263fe 151is($_, "| b aa\n| d aa");
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152@ary = split(/^aa/m, "aa b aa\naa d aa", 20);
153$cnt = split(/^aa/m, "aa b aa\naa d aa", 20);
154is($cnt, scalar(@ary));
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155
156# Are /$/m patterns scanned?
157$_ = join '|', split(/aa$/m, "aa b aa\naa d aa", 20);
3a2263fe 158is($_, "aa b |\naa d |");
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159@ary = split(/aa$/m, "aa b aa\naa d aa", 20);
160$cnt = split(/aa$/m, "aa b aa\naa d aa", 20);
161is($cnt, scalar(@ary));
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162
163# Greedyness:
164$_ = "a : b :c: d";
165@ary = split(/\s*:\s*/);
c1a7495a 166$cnt = split(/\s*:\s*/);
3a2263fe 167is(($res = join(".",@ary)), "a.b.c.d", $res);
c1a7495a 168is($cnt, scalar(@ary));
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169
170# use of match result as pattern (!)
3a2263fe 171is('p:q:r:s', join ':', split('abc' =~ /b/, 'p1q1r1s'));
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172@ary = split('abc' =~ /b/, 'p1q1r1s');
173$cnt = split('abc' =~ /b/, 'p1q1r1s');
174is($cnt, scalar(@ary));
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175
176# /^/ treated as /^/m
177$_ = join ':', split /^/, "ab\ncd\nef\n";
3a2263fe 178is($_, "ab\n:cd\n:ef\n");
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179
180# see if @a = @b = split(...) optimization works
181@list1 = @list2 = split ('p',"a p b c p");
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182ok(@list1 == @list2 &&
183 "@list1" eq "@list2" &&
184 @list1 == 2 &&
185 "@list1" eq "a b c ");
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186
187# zero-width assertion
188$_ = join ':', split /(?=\w)/, "rm b";
3a2263fe 189is($_, "r:m :b");
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190@ary = split /(?=\w)/, "rm b";
191$cnt = split /(?=\w)/, "rm b";
192is($cnt, scalar(@ary));
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193
194# unicode splittage
974f237a 195
5a2d9fa2 196@ary = map {ord} split //, v1.20.300.4000.50000.4000.300.20.1;
c1a7495a 197$cnt = split //, v1.20.300.4000.50000.4000.300.20.1;
3a2263fe 198is("@ary", "1 20 300 4000 50000 4000 300 20 1");
c1a7495a 199is($cnt, scalar(@ary));
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200
201@ary = split(/\x{FE}/, "\x{FF}\x{FE}\x{FD}"); # bug id 20010105.016
c1a7495a 202$cnt = split(/\x{FE}/, "\x{FF}\x{FE}\x{FD}"); # bug id 20010105.016
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203ok(@ary == 2 &&
204 $ary[0] eq "\xFF" && $ary[1] eq "\xFD" &&
205 $ary[0] eq "\x{FF}" && $ary[1] eq "\x{FD}");
c1a7495a 206is($cnt, scalar(@ary));
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207
208@ary = split(/(\x{FE}\xFE)/, "\xFF\x{FF}\xFE\x{FE}\xFD\x{FD}"); # variant of 31
c1a7495a 209$cnt = split(/(\x{FE}\xFE)/, "\xFF\x{FF}\xFE\x{FE}\xFD\x{FD}"); # variant of 31
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RGS
210ok(@ary == 3 &&
211 $ary[0] eq "\xFF\xFF" &&
212 $ary[0] eq "\x{FF}\xFF" &&
213 $ary[0] eq "\x{FF}\x{FF}" &&
214 $ary[1] eq "\xFE\xFE" &&
215 $ary[1] eq "\x{FE}\xFE" &&
216 $ary[1] eq "\x{FE}\x{FE}" &&
217 $ary[2] eq "\xFD\xFD" &&
218 $ary[2] eq "\x{FD}\xFD" &&
219 $ary[2] eq "\x{FD}\x{FD}");
c1a7495a 220is($cnt, scalar(@ary));
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221
222{
223 my @a = map ord, split(//, join("", map chr, (1234, 123, 2345)));
c1a7495a 224 my $c = split(//, join("", map chr, (1234, 123, 2345)));
3a2263fe 225 is("@a", "1234 123 2345");
c1a7495a 226 is($c, scalar(@a));
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227}
228
229{
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230 my $x = 'A';
231 my @a = map ord, split(/$x/, join("", map chr, (1234, ord($x), 2345)));
c1a7495a 232 my $c = split(/$x/, join("", map chr, (1234, ord($x), 2345)));
3a2263fe 233 is("@a", "1234 2345");
c1a7495a 234 is($c, scalar(@a));
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235}
236
237{
238 # bug id 20000427.003
239
240 use warnings;
241 use strict;
242
243 my $sushi = "\x{b36c}\x{5a8c}\x{ff5b}\x{5079}\x{505b}";
244
245 my @charlist = split //, $sushi;
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246 my $charnum = split //, $sushi;
247 is($charnum, scalar(@charlist));
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248 my $r = '';
249 foreach my $ch (@charlist) {
250 $r = $r . " " . sprintf "U+%04X", ord($ch);
251 }
252
3a2263fe 253 is($r, " U+B36C U+5A8C U+FF5B U+5079 U+505B");
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254}
255
256{
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257 my $s = "\x20\x40\x{80}\x{100}\x{80}\x40\x20";
258
3a2263fe 259 SKIP: {
31e261c7 260 if (ord('A') == 193) {
3a2263fe 261 skip("EBCDIC", 1);
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262 } else {
263 # bug id 20000426.003
4765795a 264
31e261c7 265 my ($a, $b, $c) = split(/\x40/, $s);
3a2263fe 266 ok($a eq "\x20" && $b eq "\x{80}\x{100}\x{80}" && $c eq $a);
31e261c7 267 }
3a2263fe 268 }
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269
270 my ($a, $b) = split(/\x{100}/, $s);
3a2263fe 271 ok($a eq "\x20\x40\x{80}" && $b eq "\x{80}\x40\x20");
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272
273 my ($a, $b) = split(/\x{80}\x{100}\x{80}/, $s);
3a2263fe 274 ok($a eq "\x20\x40" && $b eq "\x40\x20");
4765795a 275
3a2263fe 276 SKIP: {
31e261c7 277 if (ord('A') == 193) {
3a2263fe 278 skip("EBCDIC", 1);
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279 } else {
280 my ($a, $b) = split(/\x40\x{80}/, $s);
3a2263fe 281 ok($a eq "\x20" && $b eq "\x{100}\x{80}\x40\x20");
31e261c7 282 }
3a2263fe 283 }
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284
285 my ($a, $b, $c) = split(/[\x40\x{80}]+/, $s);
3a2263fe 286 ok($a eq "\x20" && $b eq "\x{100}" && $c eq "\x20");
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287}
288
289{
290 # 20001205.014
291
292 my $a = "ABC\x{263A}";
293
294 my @b = split( //, $a );
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295 my $c = split( //, $a );
296 is($c, scalar(@b));
4765795a 297
3a2263fe 298 is(scalar @b, 4);
4765795a 299
3a2263fe 300 ok(length($b[3]) == 1 && $b[3] eq "\x{263A}");
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301
302 $a =~ s/^A/Z/;
3a2263fe 303 ok(length($a) == 4 && $a eq "ZBC\x{263A}");
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304}
305
306{
307 my @a = split(/\xFE/, "\xFF\xFE\xFD");
c1a7495a 308 my $b = split(/\xFE/, "\xFF\xFE\xFD");
4765795a 309
3a2263fe 310 ok(@a == 2 && $a[0] eq "\xFF" && $a[1] eq "\xFD");
c1a7495a 311 is($b, scalar(@a));
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312}
313
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314{
315 # check that PMf_WHITE is cleared after \s+ is used
316 # reported in <20010627113312.RWGY6087.viemta06@localhost>
317 my $r;
318 foreach my $pat ( qr/\s+/, qr/ll/ ) {
319 $r = join ':' => split($pat, "hello cruel world");
320 }
3a2263fe 321 is($r, "he:o cruel world");
16bdb4ac 322}
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323
324
325{
326 # split /(A)|B/, "1B2" should return (1, undef, 2)
327 my @x = split /(A)|B/, "1B2";
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328 my $y = split /(A)|B/, "1B2";
329 is($y, scalar(@x));
3a2263fe 330 ok($x[0] eq '1' and (not defined $x[1]) and $x[2] eq '2');
6de67870 331}
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332
333{
334 # [perl #17064]
335 my $warn;
336 local $SIG{__WARN__} = sub { $warn = join '', @_; chomp $warn };
337 my $char = "\x{10f1ff}";
338 my @a = split /\r?\n/, "$char\n";
c1a7495a
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339 my $b = split /\r?\n/, "$char\n";
340 is($b, scalar(@a));
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341 ok(@a == 1 && $a[0] eq $char && !defined($warn));
342}
343
344{
345 # [perl #18195]
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346 for my $u (0, 1) {
347 for my $a (0, 1) {
348 $_ = 'readin,database,readout';
349 utf8::upgrade $_ if $u;
350 /(.+)/;
351 my @d = split /[,]/,$1;
c1a7495a
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352 my $e = split /[,]/,$1;
353 is($e, scalar(@d));
e1c3fb40 354 is(join (':',@d), 'readin:database:readout', "[perl #18195]");
3a2263fe 355 }
1d86a7f9
HS
356 }
357}
3b0d546b
AE
358
359{
360 $p="a,b";
361 utf8::upgrade $p;
7f18b612 362 eval { @a=split(/[, ]+/,$p) };
c1a7495a
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363 eval { $b=split(/[, ]+/,$p) };
364 is($b, scalar(@a));
3b0d546b
AE
365 is ("$@-@a-", '-a b-', '#20912 - split() to array with /[]+/ and utf8');
366}
7f18b612
YST
367
368{
369 is (\@a, \@{"a"}, '@a must be global for following test');
370 $p="";
371 $n = @a = split /,/,$p;
372 is ($n, 0, '#21765 - pmreplroot hack used to return undef for 0 iters');
373}
e3a8873f
DM
374
375{
376 # [perl #28938]
377 # assigning off the end of the array after a split could leave garbage
378 # in the inner elements
379
380 my $x;
381 @a = split /,/, ',,,,,';
382 $a[3]=1;
383 $x = \$a[2];
384 is (ref $x, 'SCALAR', '#28938 - garbage after extend');
385}
8727f688
YO
386{
387 # check the special casing of split /\s/ and unicode
388 use charnames qw(:full);
389 # below test data is extracted from
390 # PropList-5.0.0.txt
391 # Date: 2006-06-07, 23:22:52 GMT [MD]
392 #
393 # Unicode Character Database
394 # Copyright (c) 1991-2006 Unicode, Inc.
395 # For terms of use, see http://www.unicode.org/terms_of_use.html
396 # For documentation, see UCD.html
397 my @spaces=(
613f191e
ST
398 ord("\t"), # Cc <control-0009>
399 ord("\n"), # Cc <control-000A>
400 # not PerlSpace # Cc <control-000B>
401 ord("\f"), # Cc <control-000C>
402 ord("\r"), # Cc <control-000D>
403 ord(" "), # Zs SPACE
404 ord("\N{NEL}"), # Cc <control-0085>
405 ord("\N{NO-BREAK SPACE}"),
406 # Zs NO-BREAK SPACE
8727f688
YO
407 0x1680, # Zs OGHAM SPACE MARK
408 0x180E, # Zs MONGOLIAN VOWEL SEPARATOR
409 0x2000..0x200A, # Zs [11] EN QUAD..HAIR SPACE
410 0x2028, # Zl LINE SEPARATOR
411 0x2029, # Zp PARAGRAPH SEPARATOR
412 0x202F, # Zs NARROW NO-BREAK SPACE
413 0x205F, # Zs MEDIUM MATHEMATICAL SPACE
414 0x3000 # Zs IDEOGRAPHIC SPACE
415 );
416 #diag "Have @{[0+@spaces]} to test\n";
417 foreach my $cp (@spaces) {
613f191e 418 my $msg = sprintf "Space: U+%04x", $cp;
8727f688 419 my $space = chr($cp);
613f191e 420 my $str="A:$space:B\x{FFFD}";
8727f688 421 chop $str;
613f191e 422
8727f688 423 my @res=split(/\s+/,$str);
c1a7495a 424 my $cnt=split(/\s+/,$str);
613f191e 425 ok(@res == 2 && join('-',@res) eq "A:-:B", "$msg - /\\s+/");
c1a7495a 426 is($cnt, scalar(@res), "$msg - /\\s+/ (count)");
613f191e
ST
427
428 my $s2 = "$space$space:A:$space$space:B\x{FFFD}";
429 chop $s2;
430
431 my @r2 = split(' ',$s2);
c1a7495a 432 my $c2 = split(' ',$s2);
613f191e 433 ok(@r2 == 2 && join('-', @r2) eq ":A:-:B", "$msg - ' '");
c1a7495a 434 is($c2, scalar(@r2), "$msg - ' ' (count)");
613f191e
ST
435
436 my @r3 = split(/\s+/, $s2);
c1a7495a 437 my $c3 = split(/\s+/, $s2);
613f191e 438 ok(@r3 == 3 && join('-', @r3) eq "-:A:-:B", "$msg - /\\s+/ No.2");
c1a7495a 439 is($c3, scalar(@r3), "$msg - /\\s+/ No.2 (count)");
8727f688
YO
440 }
441}
ede8ac17
ST
442
443{
444 my $src = "ABC \0 FOO \0 XYZ";
445 my @s = split(" \0 ", $src);
446 my @r = split(/ \0 /, $src);
c1a7495a
BB
447 my $cs = split(" \0 ", $src);
448 my $cr = split(/ \0 /, $src);
ede8ac17 449 is(scalar(@s), 3);
c1a7495a
BB
450 is($cs, 3);
451 is($cr, 3);
ede8ac17
ST
452 is($s[0], "ABC");
453 is($s[1], "FOO");
454 is($s[2]," XYZ");
455 is(join(':',@s), join(':',@r));
456}
b8de32d5
AV
457
458{
459 use constant BANG => {};
460 () = split m/,/, "", BANG;
461 ok(1);
462}
941446f6
FC
463
464{
2f7a9718 465 # Bug #69875
941446f6
FC
466 # 'Hybrid' scalar-and-array context
467 scalar(our @PATH = split /::/, "Font::GlyphNames");
468 # 'my' doesn't trigger the bug
469 is "@PATH", "Font GlyphNames", "hybrid scalar-and-array context";
470}