| 1 | #!./perl -w
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| 2 |
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| 3 | #P = start of string Q = start of substr R = end of substr S = end of string
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| 4 |
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| 5 | BEGIN {
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| 6 | chdir 't' if -d 't';
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| 7 | @INC = '../lib';
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| 8 | }
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| 9 | use warnings ;
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| 10 |
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| 11 | $a = 'abcdefxyz';
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| 12 | $SIG{__WARN__} = sub {
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| 13 | if ($_[0] =~ /^substr outside of string/) {
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| 14 | $w++;
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| 15 | } elsif ($_[0] =~ /^Attempt to use reference as lvalue in substr/) {
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| 16 | $w += 2;
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| 17 | } elsif ($_[0] =~ /^Use of uninitialized value/) {
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| 18 | $w += 3;
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| 19 | } else {
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| 20 | warn $_[0];
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| 21 | }
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| 22 | };
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| 23 |
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| 24 | require './test.pl';
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| 25 |
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| 26 | plan(325);
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| 27 |
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| 28 | $FATAL_MSG = qr/^substr outside of string/;
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| 29 |
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| 30 | is(substr($a,0,3), 'abc'); # P=Q R S
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| 31 | is(substr($a,3,3), 'def'); # P Q R S
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| 32 | is(substr($a,6,999), 'xyz'); # P Q S R
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| 33 | $b = substr($a,999,999) ; # warn # P R Q S
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| 34 | is ($w--, 1);
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| 35 | eval{substr($a,999,999) = "" ; };# P R Q S
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| 36 | like ($@, $FATAL_MSG);
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| 37 | is(substr($a,0,-6), 'abc'); # P=Q R S
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| 38 | is(substr($a,-3,1), 'x'); # P Q R S
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| 39 |
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| 40 | $[ = 1;
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| 41 |
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| 42 | is(substr($a,1,3), 'abc' ); # P=Q R S
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| 43 | is(substr($a,4,3), 'def' ); # P Q R S
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| 44 | is(substr($a,7,999), 'xyz');# P Q S R
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| 45 | $b = substr($a,999,999) ; # warn # P R Q S
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| 46 | is($w--, 1);
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| 47 | eval{substr($a,999,999) = "" ; } ; # P R Q S
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| 48 | like ($@, $FATAL_MSG);
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| 49 | is(substr($a,1,-6), 'abc' );# P=Q R S
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| 50 | is(substr($a,-3,1), 'x' ); # P Q R S
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| 51 |
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| 52 | $[ = 0;
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| 53 |
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| 54 | substr($a,3,3) = 'XYZ';
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| 55 | is($a, 'abcXYZxyz' );
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| 56 | substr($a,0,2) = '';
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| 57 | is($a, 'cXYZxyz' );
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| 58 | substr($a,0,0) = 'ab';
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| 59 | is($a, 'abcXYZxyz' );
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| 60 | substr($a,0,0) = '12345678';
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| 61 | is($a, '12345678abcXYZxyz' );
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| 62 | substr($a,-3,3) = 'def';
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| 63 | is($a, '12345678abcXYZdef');
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| 64 | substr($a,-3,3) = '<';
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| 65 | is($a, '12345678abcXYZ<' );
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| 66 | substr($a,-1,1) = '12345678';
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| 67 | is($a, '12345678abcXYZ12345678' );
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| 68 |
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| 69 | $a = 'abcdefxyz';
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| 70 |
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| 71 | is(substr($a,6), 'xyz' ); # P Q R=S
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| 72 | is(substr($a,-3), 'xyz' ); # P Q R=S
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| 73 | $b = substr($a,999,999) ; # warning # P R=S Q
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| 74 | is($w--, 1);
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| 75 | eval{substr($a,999,999) = "" ; } ; # P R=S Q
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| 76 | like($@, $FATAL_MSG);
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| 77 | is(substr($a,0), 'abcdefxyz'); # P=Q R=S
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| 78 | is(substr($a,9), ''); # P Q=R=S
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| 79 | is(substr($a,-11), 'abcdefxyz'); # Q P R=S
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| 80 | is(substr($a,-9), 'abcdefxyz'); # P=Q R=S
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| 81 |
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| 82 | $a = '54321';
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| 83 |
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| 84 | $b = substr($a,-7, 1) ; # warn # Q R P S
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| 85 | is($w--, 1);
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| 86 | eval{substr($a,-7, 1) = "" ; }; # Q R P S
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| 87 | like($@, $FATAL_MSG);
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| 88 | $b = substr($a,-7,-6) ; # warn # Q R P S
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| 89 | is($w--, 1);
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| 90 | eval{substr($a,-7,-6) = "" ; }; # Q R P S
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| 91 | like($@, $FATAL_MSG);
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| 92 | is(substr($a,-5,-7), ''); # R P=Q S
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| 93 | is(substr($a, 2,-7), ''); # R P Q S
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| 94 | is(substr($a,-3,-7), ''); # R P Q S
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| 95 | is(substr($a, 2,-5), ''); # P=R Q S
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| 96 | is(substr($a,-3,-5), ''); # P=R Q S
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| 97 | is(substr($a, 2,-4), ''); # P R Q S
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| 98 | is(substr($a,-3,-4), ''); # P R Q S
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| 99 | is(substr($a, 5,-6), ''); # R P Q=S
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| 100 | is(substr($a, 5,-5), ''); # P=R Q S
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| 101 | is(substr($a, 5,-3), ''); # P R Q=S
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| 102 | $b = substr($a, 7,-7) ; # warn # R P S Q
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| 103 | is($w--, 1);
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| 104 | eval{substr($a, 7,-7) = "" ; }; # R P S Q
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| 105 | like($@, $FATAL_MSG);
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| 106 | $b = substr($a, 7,-5) ; # warn # P=R S Q
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| 107 | is($w--, 1);
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| 108 | eval{substr($a, 7,-5) = "" ; }; # P=R S Q
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| 109 | like($@, $FATAL_MSG);
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| 110 | $b = substr($a, 7,-3) ; # warn # P Q S Q
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| 111 | is($w--, 1);
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| 112 | eval{substr($a, 7,-3) = "" ; }; # P Q S Q
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| 113 | like($@, $FATAL_MSG);
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| 114 | $b = substr($a, 7, 0) ; # warn # P S Q=R
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| 115 | is($w--, 1);
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| 116 | eval{substr($a, 7, 0) = "" ; }; # P S Q=R
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| 117 | like($@, $FATAL_MSG);
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| 118 |
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| 119 | is(substr($a,-7,2), ''); # Q P=R S
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| 120 | is(substr($a,-7,4), '54'); # Q P R S
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| 121 | is(substr($a,-7,7), '54321');# Q P R=S
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| 122 | is(substr($a,-7,9), '54321');# Q P S R
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| 123 | is(substr($a,-5,0), ''); # P=Q=R S
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| 124 | is(substr($a,-5,3), '543');# P=Q R S
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| 125 | is(substr($a,-5,5), '54321');# P=Q R=S
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| 126 | is(substr($a,-5,7), '54321');# P=Q S R
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| 127 | is(substr($a,-3,0), ''); # P Q=R S
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| 128 | is(substr($a,-3,3), '321');# P Q R=S
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| 129 | is(substr($a,-2,3), '21'); # P Q S R
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| 130 | is(substr($a,0,-5), ''); # P=Q=R S
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| 131 | is(substr($a,2,-3), ''); # P Q=R S
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| 132 | is(substr($a,0,0), ''); # P=Q=R S
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| 133 | is(substr($a,0,5), '54321');# P=Q R=S
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| 134 | is(substr($a,0,7), '54321');# P=Q S R
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| 135 | is(substr($a,2,0), ''); # P Q=R S
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| 136 | is(substr($a,2,3), '321'); # P Q R=S
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| 137 | is(substr($a,5,0), ''); # P Q=R=S
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| 138 | is(substr($a,5,2), ''); # P Q=S R
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| 139 | is(substr($a,-7,-5), ''); # Q P=R S
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| 140 | is(substr($a,-7,-2), '543');# Q P R S
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| 141 | is(substr($a,-5,-5), ''); # P=Q=R S
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| 142 | is(substr($a,-5,-2), '543');# P=Q R S
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| 143 | is(substr($a,-3,-3), ''); # P Q=R S
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| 144 | is(substr($a,-3,-1), '32');# P Q R S
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| 145 |
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| 146 | $a = '';
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| 147 |
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| 148 | is(substr($a,-2,2), ''); # Q P=R=S
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| 149 | is(substr($a,0,0), ''); # P=Q=R=S
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| 150 | is(substr($a,0,1), ''); # P=Q=S R
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| 151 | is(substr($a,-2,3), ''); # Q P=S R
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| 152 | is(substr($a,-2), ''); # Q P=R=S
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| 153 | is(substr($a,0), ''); # P=Q=R=S
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| 154 |
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| 155 |
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| 156 | is(substr($a,0,-1), ''); # R P=Q=S
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| 157 | $b = substr($a,-2, 0) ; # warn # Q=R P=S
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| 158 | is($w--, 1);
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| 159 | eval{substr($a,-2, 0) = "" ; }; # Q=R P=S
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| 160 | like($@, $FATAL_MSG);
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| 161 |
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| 162 | $b = substr($a,-2, 1) ; # warn # Q R P=S
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| 163 | is($w--, 1);
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| 164 | eval{substr($a,-2, 1) = "" ; }; # Q R P=S
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| 165 | like($@, $FATAL_MSG);
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| 166 |
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| 167 | $b = substr($a,-2,-1) ; # warn # Q R P=S
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| 168 | is($w--, 1);
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| 169 | eval{substr($a,-2,-1) = "" ; }; # Q R P=S
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| 170 | like($@, $FATAL_MSG);
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| 171 |
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| 172 | $b = substr($a,-2,-2) ; # warn # Q=R P=S
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| 173 | is($w--, 1);
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| 174 | eval{substr($a,-2,-2) = "" ; }; # Q=R P=S
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| 175 | like($@, $FATAL_MSG);
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| 176 |
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| 177 | $b = substr($a, 1,-2) ; # warn # R P=S Q
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| 178 | is($w--, 1);
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| 179 | eval{substr($a, 1,-2) = "" ; }; # R P=S Q
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| 180 | like($@, $FATAL_MSG);
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| 181 |
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| 182 | $b = substr($a, 1, 1) ; # warn # P=S Q R
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| 183 | is($w--, 1);
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| 184 | eval{substr($a, 1, 1) = "" ; }; # P=S Q R
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| 185 | like($@, $FATAL_MSG);
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| 186 |
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| 187 | $b = substr($a, 1, 0) ;# warn # P=S Q=R
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| 188 | is($w--, 1);
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| 189 | eval{substr($a, 1, 0) = "" ; }; # P=S Q=R
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| 190 | like($@, $FATAL_MSG);
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| 191 |
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| 192 | $b = substr($a,1) ; # warning # P=R=S Q
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| 193 | is($w--, 1);
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| 194 | eval{substr($a,1) = "" ; }; # P=R=S Q
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| 195 | like($@, $FATAL_MSG);
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| 196 |
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| 197 | my $a = 'zxcvbnm';
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| 198 | substr($a,2,0) = '';
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| 199 | is($a, 'zxcvbnm');
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| 200 | substr($a,7,0) = '';
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| 201 | is($a, 'zxcvbnm');
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| 202 | substr($a,5,0) = '';
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| 203 | is($a, 'zxcvbnm');
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| 204 | substr($a,0,2) = 'pq';
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| 205 | is($a, 'pqcvbnm');
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| 206 | substr($a,2,0) = 'r';
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| 207 | is($a, 'pqrcvbnm');
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| 208 | substr($a,8,0) = 'asd';
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| 209 | is($a, 'pqrcvbnmasd');
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| 210 | substr($a,0,2) = 'iop';
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| 211 | is($a, 'ioprcvbnmasd');
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| 212 | substr($a,0,5) = 'fgh';
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| 213 | is($a, 'fghvbnmasd');
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| 214 | substr($a,3,5) = 'jkl';
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| 215 | is($a, 'fghjklsd');
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| 216 | substr($a,3,2) = '1234';
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| 217 | is($a, 'fgh1234lsd');
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| 218 |
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| 219 |
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| 220 | # with lexicals (and in re-entered scopes)
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| 221 | for (0,1) {
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| 222 | my $txt;
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| 223 | unless ($_) {
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| 224 | $txt = "Foo";
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| 225 | substr($txt, -1) = "X";
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| 226 | is($txt, "FoX");
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| 227 | }
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| 228 | else {
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| 229 | substr($txt, 0, 1) = "X";
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| 230 | is($txt, "X");
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| 231 | }
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| 232 | }
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| 233 |
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| 234 | $w = 0 ;
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| 235 | # coercion of references
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| 236 | {
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| 237 | my $s = [];
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| 238 | substr($s, 0, 1) = 'Foo';
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| 239 | is (substr($s,0,7), "FooRRAY");
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| 240 | is ($w,2);
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| 241 | $w = 0;
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| 242 | }
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| 243 |
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| 244 | # check no spurious warnings
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| 245 | is($w, 0);
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| 246 |
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| 247 | # check new 4 arg replacement syntax
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| 248 | $a = "abcxyz";
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| 249 | $w = 0;
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| 250 | is(substr($a, 0, 3, ""), "abc");
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| 251 | is($a, "xyz");
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| 252 | is(substr($a, 0, 0, "abc"), "");
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| 253 | is($a, "abcxyz");
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| 254 | is(substr($a, 3, -1, ""), "xy");
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| 255 | is($a, "abcz");
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| 256 |
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| 257 | is(substr($a, 3, undef, "xy"), "");
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| 258 | is($a, "abcxyz");
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| 259 | is($w, 3);
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| 260 |
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| 261 | $w = 0;
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| 262 |
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| 263 | is(substr($a, 3, 9999999, ""), "xyz");
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| 264 | is($a, "abc");
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| 265 | eval{substr($a, -99, 0, "") };
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| 266 | like($@, $FATAL_MSG);
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| 267 | eval{substr($a, 99, 3, "") };
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| 268 | like($@, $FATAL_MSG);
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| 269 |
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| 270 | substr($a, 0, length($a), "foo");
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| 271 | is ($a, "foo");
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| 272 | is ($w, 0);
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| 273 |
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| 274 | # using 4 arg substr as lvalue is a compile time error
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| 275 | eval 'substr($a,0,0,"") = "abc"';
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| 276 | like ($@, qr/Can't modify substr/);
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| 277 | is ($a, "foo");
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| 278 |
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| 279 | $a = "abcdefgh";
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| 280 | is(sub { shift }->(substr($a, 0, 4, "xxxx")), 'abcd');
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| 281 | is($a, 'xxxxefgh');
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| 282 |
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| 283 | {
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| 284 | my $y = 10;
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| 285 | $y = "2" . $y;
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| 286 | is ($y, 210);
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| 287 | }
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| 288 |
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| 289 | # utf8 sanity
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| 290 | {
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| 291 | my $x = substr("a\x{263a}b",0);
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| 292 | is(length($x), 3);
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| 293 | $x = substr($x,1,1);
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| 294 | is($x, "\x{263a}");
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| 295 | $x = $x x 2;
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| 296 | is(length($x), 2);
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| 297 | substr($x,0,1) = "abcd";
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| 298 | is($x, "abcd\x{263a}");
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| 299 | is(length($x), 5);
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| 300 | $x = reverse $x;
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| 301 | is(length($x), 5);
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| 302 | is($x, "\x{263a}dcba");
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| 303 |
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| 304 | my $z = 10;
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| 305 | $z = "21\x{263a}" . $z;
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| 306 | is(length($z), 5);
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| 307 | is($z, "21\x{263a}10");
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| 308 | }
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| 309 |
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| 310 | # replacement should work on magical values
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| 311 | require Tie::Scalar;
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| 312 | my %data;
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| 313 | tie $data{'a'}, 'Tie::StdScalar'; # makes $data{'a'} magical
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| 314 | $data{a} = "firstlast";
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| 315 | is(substr($data{'a'}, 0, 5, ""), "first");
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| 316 | is($data{'a'}, "last");
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| 317 |
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| 318 | # more utf8
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| 319 |
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| 320 | # The following two originally from Ignasi Roca.
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| 321 |
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| 322 | $x = "\xF1\xF2\xF3";
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| 323 | substr($x, 0, 1) = "\x{100}"; # Ignasi had \x{FF}
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| 324 | is(length($x), 3);
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| 325 | is($x, "\x{100}\xF2\xF3");
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| 326 | is(substr($x, 0, 1), "\x{100}");
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| 327 | is(substr($x, 1, 1), "\x{F2}");
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| 328 | is(substr($x, 2, 1), "\x{F3}");
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| 329 |
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| 330 | $x = "\xF1\xF2\xF3";
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| 331 | substr($x, 0, 1) = "\x{100}\x{FF}"; # Ignasi had \x{FF}
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| 332 | is(length($x), 4);
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| 333 | is($x, "\x{100}\x{FF}\xF2\xF3");
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| 334 | is(substr($x, 0, 1), "\x{100}");
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| 335 | is(substr($x, 1, 1), "\x{FF}");
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| 336 | is(substr($x, 2, 1), "\x{F2}");
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| 337 | is(substr($x, 3, 1), "\x{F3}");
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| 338 |
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| 339 | # more utf8 lval exercise
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| 340 |
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| 341 | $x = "\xF1\xF2\xF3";
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| 342 | substr($x, 0, 2) = "\x{100}\xFF";
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| 343 | is(length($x), 3);
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| 344 | is($x, "\x{100}\xFF\xF3");
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| 345 | is(substr($x, 0, 1), "\x{100}");
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| 346 | is(substr($x, 1, 1), "\x{FF}");
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| 347 | is(substr($x, 2, 1), "\x{F3}");
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| 348 |
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| 349 | $x = "\xF1\xF2\xF3";
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| 350 | substr($x, 1, 1) = "\x{100}\xFF";
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| 351 | is(length($x), 4);
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| 352 | is($x, "\xF1\x{100}\xFF\xF3");
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| 353 | is(substr($x, 0, 1), "\x{F1}");
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| 354 | is(substr($x, 1, 1), "\x{100}");
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| 355 | is(substr($x, 2, 1), "\x{FF}");
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| 356 | is(substr($x, 3, 1), "\x{F3}");
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| 357 |
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| 358 | $x = "\xF1\xF2\xF3";
|
|---|
| 359 | substr($x, 2, 1) = "\x{100}\xFF";
|
|---|
| 360 | is(length($x), 4);
|
|---|
| 361 | is($x, "\xF1\xF2\x{100}\xFF");
|
|---|
| 362 | is(substr($x, 0, 1), "\x{F1}");
|
|---|
| 363 | is(substr($x, 1, 1), "\x{F2}");
|
|---|
| 364 | is(substr($x, 2, 1), "\x{100}");
|
|---|
| 365 | is(substr($x, 3, 1), "\x{FF}");
|
|---|
| 366 |
|
|---|
| 367 | $x = "\xF1\xF2\xF3";
|
|---|
| 368 | substr($x, 3, 1) = "\x{100}\xFF";
|
|---|
| 369 | is(length($x), 5);
|
|---|
| 370 | is($x, "\xF1\xF2\xF3\x{100}\xFF");
|
|---|
| 371 | is(substr($x, 0, 1), "\x{F1}");
|
|---|
| 372 | is(substr($x, 1, 1), "\x{F2}");
|
|---|
| 373 | is(substr($x, 2, 1), "\x{F3}");
|
|---|
| 374 | is(substr($x, 3, 1), "\x{100}");
|
|---|
| 375 | is(substr($x, 4, 1), "\x{FF}");
|
|---|
| 376 |
|
|---|
| 377 | $x = "\xF1\xF2\xF3";
|
|---|
| 378 | substr($x, -1, 1) = "\x{100}\xFF";
|
|---|
| 379 | is(length($x), 4);
|
|---|
| 380 | is($x, "\xF1\xF2\x{100}\xFF");
|
|---|
| 381 | is(substr($x, 0, 1), "\x{F1}");
|
|---|
| 382 | is(substr($x, 1, 1), "\x{F2}");
|
|---|
| 383 | is(substr($x, 2, 1), "\x{100}");
|
|---|
| 384 | is(substr($x, 3, 1), "\x{FF}");
|
|---|
| 385 |
|
|---|
| 386 | $x = "\xF1\xF2\xF3";
|
|---|
| 387 | substr($x, -1, 0) = "\x{100}\xFF";
|
|---|
| 388 | is(length($x), 5);
|
|---|
| 389 | is($x, "\xF1\xF2\x{100}\xFF\xF3");
|
|---|
| 390 | is(substr($x, 0, 1), "\x{F1}");
|
|---|
| 391 | is(substr($x, 1, 1), "\x{F2}");
|
|---|
| 392 | is(substr($x, 2, 1), "\x{100}");
|
|---|
| 393 | is(substr($x, 3, 1), "\x{FF}");
|
|---|
| 394 | is(substr($x, 4, 1), "\x{F3}");
|
|---|
| 395 |
|
|---|
| 396 | $x = "\xF1\xF2\xF3";
|
|---|
| 397 | substr($x, 0, -1) = "\x{100}\xFF";
|
|---|
| 398 | is(length($x), 3);
|
|---|
| 399 | is($x, "\x{100}\xFF\xF3");
|
|---|
| 400 | is(substr($x, 0, 1), "\x{100}");
|
|---|
| 401 | is(substr($x, 1, 1), "\x{FF}");
|
|---|
| 402 | is(substr($x, 2, 1), "\x{F3}");
|
|---|
| 403 |
|
|---|
| 404 | $x = "\xF1\xF2\xF3";
|
|---|
| 405 | substr($x, 0, -2) = "\x{100}\xFF";
|
|---|
| 406 | is(length($x), 4);
|
|---|
| 407 | is($x, "\x{100}\xFF\xF2\xF3");
|
|---|
| 408 | is(substr($x, 0, 1), "\x{100}");
|
|---|
| 409 | is(substr($x, 1, 1), "\x{FF}");
|
|---|
| 410 | is(substr($x, 2, 1), "\x{F2}");
|
|---|
| 411 | is(substr($x, 3, 1), "\x{F3}");
|
|---|
| 412 |
|
|---|
| 413 | $x = "\xF1\xF2\xF3";
|
|---|
| 414 | substr($x, 0, -3) = "\x{100}\xFF";
|
|---|
| 415 | is(length($x), 5);
|
|---|
| 416 | is($x, "\x{100}\xFF\xF1\xF2\xF3");
|
|---|
| 417 | is(substr($x, 0, 1), "\x{100}");
|
|---|
| 418 | is(substr($x, 1, 1), "\x{FF}");
|
|---|
| 419 | is(substr($x, 2, 1), "\x{F1}");
|
|---|
| 420 | is(substr($x, 3, 1), "\x{F2}");
|
|---|
| 421 | is(substr($x, 4, 1), "\x{F3}");
|
|---|
| 422 |
|
|---|
| 423 | $x = "\xF1\xF2\xF3";
|
|---|
| 424 | substr($x, 1, -1) = "\x{100}\xFF";
|
|---|
| 425 | is(length($x), 4);
|
|---|
| 426 | is($x, "\xF1\x{100}\xFF\xF3");
|
|---|
| 427 | is(substr($x, 0, 1), "\x{F1}");
|
|---|
| 428 | is(substr($x, 1, 1), "\x{100}");
|
|---|
| 429 | is(substr($x, 2, 1), "\x{FF}");
|
|---|
| 430 | is(substr($x, 3, 1), "\x{F3}");
|
|---|
| 431 |
|
|---|
| 432 | $x = "\xF1\xF2\xF3";
|
|---|
| 433 | substr($x, -1, -1) = "\x{100}\xFF";
|
|---|
| 434 | is(length($x), 5);
|
|---|
| 435 | is($x, "\xF1\xF2\x{100}\xFF\xF3");
|
|---|
| 436 | is(substr($x, 0, 1), "\x{F1}");
|
|---|
| 437 | is(substr($x, 1, 1), "\x{F2}");
|
|---|
| 438 | is(substr($x, 2, 1), "\x{100}");
|
|---|
| 439 | is(substr($x, 3, 1), "\x{FF}");
|
|---|
| 440 | is(substr($x, 4, 1), "\x{F3}");
|
|---|
| 441 |
|
|---|
| 442 | # And tests for already-UTF8 one
|
|---|
| 443 |
|
|---|
| 444 | $x = "\x{101}\x{F2}\x{F3}";
|
|---|
| 445 | substr($x, 0, 1) = "\x{100}";
|
|---|
| 446 | is(length($x), 3);
|
|---|
| 447 | is($x, "\x{100}\xF2\xF3");
|
|---|
| 448 | is(substr($x, 0, 1), "\x{100}");
|
|---|
| 449 | is(substr($x, 1, 1), "\x{F2}");
|
|---|
| 450 | is(substr($x, 2, 1), "\x{F3}");
|
|---|
| 451 |
|
|---|
| 452 | $x = "\x{101}\x{F2}\x{F3}";
|
|---|
| 453 | substr($x, 0, 1) = "\x{100}\x{FF}";
|
|---|
| 454 | is(length($x), 4);
|
|---|
| 455 | is($x, "\x{100}\x{FF}\xF2\xF3");
|
|---|
| 456 | is(substr($x, 0, 1), "\x{100}");
|
|---|
| 457 | is(substr($x, 1, 1), "\x{FF}");
|
|---|
| 458 | is(substr($x, 2, 1), "\x{F2}");
|
|---|
| 459 | is(substr($x, 3, 1), "\x{F3}");
|
|---|
| 460 |
|
|---|
| 461 | $x = "\x{101}\x{F2}\x{F3}";
|
|---|
| 462 | substr($x, 0, 2) = "\x{100}\xFF";
|
|---|
| 463 | is(length($x), 3);
|
|---|
| 464 | is($x, "\x{100}\xFF\xF3");
|
|---|
| 465 | is(substr($x, 0, 1), "\x{100}");
|
|---|
| 466 | is(substr($x, 1, 1), "\x{FF}");
|
|---|
| 467 | is(substr($x, 2, 1), "\x{F3}");
|
|---|
| 468 |
|
|---|
| 469 | $x = "\x{101}\x{F2}\x{F3}";
|
|---|
| 470 | substr($x, 1, 1) = "\x{100}\xFF";
|
|---|
| 471 | is(length($x), 4);
|
|---|
| 472 | is($x, "\x{101}\x{100}\xFF\xF3");
|
|---|
| 473 | is(substr($x, 0, 1), "\x{101}");
|
|---|
| 474 | is(substr($x, 1, 1), "\x{100}");
|
|---|
| 475 | is(substr($x, 2, 1), "\x{FF}");
|
|---|
| 476 | is(substr($x, 3, 1), "\x{F3}");
|
|---|
| 477 |
|
|---|
| 478 | $x = "\x{101}\x{F2}\x{F3}";
|
|---|
| 479 | substr($x, 2, 1) = "\x{100}\xFF";
|
|---|
| 480 | is(length($x), 4);
|
|---|
| 481 | is($x, "\x{101}\xF2\x{100}\xFF");
|
|---|
| 482 | is(substr($x, 0, 1), "\x{101}");
|
|---|
| 483 | is(substr($x, 1, 1), "\x{F2}");
|
|---|
| 484 | is(substr($x, 2, 1), "\x{100}");
|
|---|
| 485 | is(substr($x, 3, 1), "\x{FF}");
|
|---|
| 486 |
|
|---|
| 487 | $x = "\x{101}\x{F2}\x{F3}";
|
|---|
| 488 | substr($x, 3, 1) = "\x{100}\xFF";
|
|---|
| 489 | is(length($x), 5);
|
|---|
| 490 | is($x, "\x{101}\x{F2}\x{F3}\x{100}\xFF");
|
|---|
| 491 | is(substr($x, 0, 1), "\x{101}");
|
|---|
| 492 | is(substr($x, 1, 1), "\x{F2}");
|
|---|
| 493 | is(substr($x, 2, 1), "\x{F3}");
|
|---|
| 494 | is(substr($x, 3, 1), "\x{100}");
|
|---|
| 495 | is(substr($x, 4, 1), "\x{FF}");
|
|---|
| 496 |
|
|---|
| 497 | $x = "\x{101}\x{F2}\x{F3}";
|
|---|
| 498 | substr($x, -1, 1) = "\x{100}\xFF";
|
|---|
| 499 | is(length($x), 4);
|
|---|
| 500 | is($x, "\x{101}\xF2\x{100}\xFF");
|
|---|
| 501 | is(substr($x, 0, 1), "\x{101}");
|
|---|
| 502 | is(substr($x, 1, 1), "\x{F2}");
|
|---|
| 503 | is(substr($x, 2, 1), "\x{100}");
|
|---|
| 504 | is(substr($x, 3, 1), "\x{FF}");
|
|---|
| 505 |
|
|---|
| 506 | $x = "\x{101}\x{F2}\x{F3}";
|
|---|
| 507 | substr($x, -1, 0) = "\x{100}\xFF";
|
|---|
| 508 | is(length($x), 5);
|
|---|
| 509 | is($x, "\x{101}\xF2\x{100}\xFF\xF3");
|
|---|
| 510 | is(substr($x, 0, 1), "\x{101}");
|
|---|
| 511 | is(substr($x, 1, 1), "\x{F2}");
|
|---|
| 512 | is(substr($x, 2, 1), "\x{100}");
|
|---|
| 513 | is(substr($x, 3, 1), "\x{FF}");
|
|---|
| 514 | is(substr($x, 4, 1), "\x{F3}");
|
|---|
| 515 |
|
|---|
| 516 | $x = "\x{101}\x{F2}\x{F3}";
|
|---|
| 517 | substr($x, 0, -1) = "\x{100}\xFF";
|
|---|
| 518 | is(length($x), 3);
|
|---|
| 519 | is($x, "\x{100}\xFF\xF3");
|
|---|
| 520 | is(substr($x, 0, 1), "\x{100}");
|
|---|
| 521 | is(substr($x, 1, 1), "\x{FF}");
|
|---|
| 522 | is(substr($x, 2, 1), "\x{F3}");
|
|---|
| 523 |
|
|---|
| 524 | $x = "\x{101}\x{F2}\x{F3}";
|
|---|
| 525 | substr($x, 0, -2) = "\x{100}\xFF";
|
|---|
| 526 | is(length($x), 4);
|
|---|
| 527 | is($x, "\x{100}\xFF\xF2\xF3");
|
|---|
| 528 | is(substr($x, 0, 1), "\x{100}");
|
|---|
| 529 | is(substr($x, 1, 1), "\x{FF}");
|
|---|
| 530 | is(substr($x, 2, 1), "\x{F2}");
|
|---|
| 531 | is(substr($x, 3, 1), "\x{F3}");
|
|---|
| 532 |
|
|---|
| 533 | $x = "\x{101}\x{F2}\x{F3}";
|
|---|
| 534 | substr($x, 0, -3) = "\x{100}\xFF";
|
|---|
| 535 | is(length($x), 5);
|
|---|
| 536 | is($x, "\x{100}\xFF\x{101}\x{F2}\x{F3}");
|
|---|
| 537 | is(substr($x, 0, 1), "\x{100}");
|
|---|
| 538 | is(substr($x, 1, 1), "\x{FF}");
|
|---|
| 539 | is(substr($x, 2, 1), "\x{101}");
|
|---|
| 540 | is(substr($x, 3, 1), "\x{F2}");
|
|---|
| 541 | is(substr($x, 4, 1), "\x{F3}");
|
|---|
| 542 |
|
|---|
| 543 | $x = "\x{101}\x{F2}\x{F3}";
|
|---|
| 544 | substr($x, 1, -1) = "\x{100}\xFF";
|
|---|
| 545 | is(length($x), 4);
|
|---|
| 546 | is($x, "\x{101}\x{100}\xFF\xF3");
|
|---|
| 547 | is(substr($x, 0, 1), "\x{101}");
|
|---|
| 548 | is(substr($x, 1, 1), "\x{100}");
|
|---|
| 549 | is(substr($x, 2, 1), "\x{FF}");
|
|---|
| 550 | is(substr($x, 3, 1), "\x{F3}");
|
|---|
| 551 |
|
|---|
| 552 | $x = "\x{101}\x{F2}\x{F3}";
|
|---|
| 553 | substr($x, -1, -1) = "\x{100}\xFF";
|
|---|
| 554 | is(length($x), 5);
|
|---|
| 555 | is($x, "\x{101}\xF2\x{100}\xFF\xF3");
|
|---|
| 556 | is(substr($x, 0, 1), "\x{101}");
|
|---|
| 557 | is(substr($x, 1, 1), "\x{F2}");
|
|---|
| 558 | is(substr($x, 2, 1), "\x{100}");
|
|---|
| 559 | is(substr($x, 3, 1), "\x{FF}");
|
|---|
| 560 | is(substr($x, 4, 1), "\x{F3}");
|
|---|
| 561 |
|
|---|
| 562 | substr($x = "ab", 0, 0, "\x{100}\x{200}");
|
|---|
| 563 | is($x, "\x{100}\x{200}ab");
|
|---|
| 564 |
|
|---|
| 565 | substr($x = "\x{100}\x{200}", 0, 0, "ab");
|
|---|
| 566 | is($x, "ab\x{100}\x{200}");
|
|---|
| 567 |
|
|---|
| 568 | substr($x = "ab", 1, 0, "\x{100}\x{200}");
|
|---|
| 569 | is($x, "a\x{100}\x{200}b");
|
|---|
| 570 |
|
|---|
| 571 | substr($x = "\x{100}\x{200}", 1, 0, "ab");
|
|---|
| 572 | is($x, "\x{100}ab\x{200}");
|
|---|
| 573 |
|
|---|
| 574 | substr($x = "ab", 2, 0, "\x{100}\x{200}");
|
|---|
| 575 | is($x, "ab\x{100}\x{200}");
|
|---|
| 576 |
|
|---|
| 577 | substr($x = "\x{100}\x{200}", 2, 0, "ab");
|
|---|
| 578 | is($x, "\x{100}\x{200}ab");
|
|---|
| 579 |
|
|---|
| 580 | substr($x = "\xFFb", 0, 0, "\x{100}\x{200}");
|
|---|
| 581 | is($x, "\x{100}\x{200}\xFFb");
|
|---|
| 582 |
|
|---|
| 583 | substr($x = "\x{100}\x{200}", 0, 0, "\xFFb");
|
|---|
| 584 | is($x, "\xFFb\x{100}\x{200}");
|
|---|
| 585 |
|
|---|
| 586 | substr($x = "\xFFb", 1, 0, "\x{100}\x{200}");
|
|---|
| 587 | is($x, "\xFF\x{100}\x{200}b");
|
|---|
| 588 |
|
|---|
| 589 | substr($x = "\x{100}\x{200}", 1, 0, "\xFFb");
|
|---|
| 590 | is($x, "\x{100}\xFFb\x{200}");
|
|---|
| 591 |
|
|---|
| 592 | substr($x = "\xFFb", 2, 0, "\x{100}\x{200}");
|
|---|
| 593 | is($x, "\xFFb\x{100}\x{200}");
|
|---|
| 594 |
|
|---|
| 595 | substr($x = "\x{100}\x{200}", 2, 0, "\xFFb");
|
|---|
| 596 | is($x, "\x{100}\x{200}\xFFb");
|
|---|
| 597 |
|
|---|
| 598 | # [perl #20933]
|
|---|
| 599 | {
|
|---|
| 600 | my $s = "ab";
|
|---|
| 601 | my @r;
|
|---|
| 602 | $r[$_] = \ substr $s, $_, 1 for (0, 1);
|
|---|
| 603 | is(join("", map { $$_ } @r), "ab");
|
|---|
| 604 | }
|
|---|
| 605 |
|
|---|
| 606 | # [perl #23207]
|
|---|
| 607 | {
|
|---|
| 608 | sub ss {
|
|---|
| 609 | substr($_[0],0,1) ^= substr($_[0],1,1) ^=
|
|---|
| 610 | substr($_[0],0,1) ^= substr($_[0],1,1);
|
|---|
| 611 | }
|
|---|
| 612 | my $x = my $y = 'AB'; ss $x; ss $y;
|
|---|
| 613 | is($x, $y);
|
|---|
| 614 | }
|
|---|
| 615 |
|
|---|
| 616 | # [perl #24605]
|
|---|
| 617 | {
|
|---|
| 618 | my $x = "0123456789\x{500}";
|
|---|
| 619 | my $y = substr $x, 4;
|
|---|
| 620 | is(substr($x, 7, 1), "7");
|
|---|
| 621 | }
|
|---|
| 622 |
|
|---|
| 623 | # [perl #24200] string corruption with lvalue sub
|
|---|
| 624 |
|
|---|
| 625 | {
|
|---|
| 626 | my $foo = "a";
|
|---|
| 627 | sub bar: lvalue { substr $foo, 0 }
|
|---|
| 628 | bar = "XXX";
|
|---|
| 629 | is(bar, 'XXX');
|
|---|
| 630 | $foo = '123456789';
|
|---|
| 631 | is(bar, '123456789');
|
|---|
| 632 | }
|
|---|
| 633 |
|
|---|
| 634 | # [perl #29149]
|
|---|
| 635 | {
|
|---|
| 636 | my $text = "0123456789\xED ";
|
|---|
| 637 | utf8::upgrade($text);
|
|---|
| 638 | my $pos = 5;
|
|---|
| 639 | pos($text) = $pos;
|
|---|
| 640 | my $a = substr($text, $pos, $pos);
|
|---|
| 641 | is(substr($text,$pos,1), $pos);
|
|---|
| 642 |
|
|---|
| 643 | }
|
|---|
| 644 |
|
|---|
| 645 | # [perl #23765]
|
|---|
| 646 | {
|
|---|
| 647 | my $a = pack("C", 0xbf);
|
|---|
| 648 | substr($a, -1) &= chr(0xfeff);
|
|---|
| 649 | is($a, "\xbf");
|
|---|
| 650 | }
|
|---|
| 651 |
|
|---|
| 652 | # [perl #34976] incorrect caching of utf8 substr length
|
|---|
| 653 | {
|
|---|
| 654 | my $a = "abcd\x{100}";
|
|---|
| 655 | is(substr($a,1,2), 'bc');
|
|---|
| 656 | is(substr($a,1,1), 'b');
|
|---|
| 657 | }
|
|---|
