4 #P = start of string Q = start of substr R = end of substr S = end of string
7 unshift @INC, '../lib' if -d '../lib' ;
12 $SIG{__WARN__} = sub {
13 if ($_[0] =~ /^substr outside of string/) {
15 } elsif ($_[0] =~ /^Attempt to use reference as lvalue in substr/) {
17 } elsif ($_[0] =~ /^Use of uninitialized value/) {
24 sub ok { print (($_[1] ? "" : "not ") . "ok $_[0]\n") }
26 $FATAL_MSG = '^substr outside of string' ;
28 ok 1, substr($a,0,3) eq 'abc'; # P=Q R S
29 ok 2, substr($a,3,3) eq 'def'; # P Q R S
30 ok 3, substr($a,6,999) eq 'xyz'; # P Q S R
31 $b = substr($a,999,999) ; # warn # P R Q S
33 eval{substr($a,999,999) = "" ; };# P R Q S
34 ok 5, $@ =~ /$FATAL_MSG/;
35 ok 6, substr($a,0,-6) eq 'abc'; # P=Q R S
36 ok 7, substr($a,-3,1) eq 'x'; # P Q R S
40 ok 8, substr($a,1,3) eq 'abc' ; # P=Q R S
41 ok 9, substr($a,4,3) eq 'def' ; # P Q R S
42 ok 10, substr($a,7,999) eq 'xyz';# P Q S R
43 $b = substr($a,999,999) ; # warn # P R Q S
45 eval{substr($a,999,999) = "" ; } ; # P R Q S
46 ok 12, $@ =~ /$FATAL_MSG/;
47 ok 13, substr($a,1,-6) eq 'abc' ;# P=Q R S
48 ok 14, substr($a,-3,1) eq 'x' ; # P Q R S
52 substr($a,3,3) = 'XYZ';
53 ok 15, $a eq 'abcXYZxyz' ;
55 ok 16, $a eq 'cXYZxyz' ;
56 substr($a,0,0) = 'ab';
57 ok 17, $a eq 'abcXYZxyz' ;
58 substr($a,0,0) = '12345678';
59 ok 18, $a eq '12345678abcXYZxyz' ;
60 substr($a,-3,3) = 'def';
61 ok 19, $a eq '12345678abcXYZdef';
62 substr($a,-3,3) = '<';
63 ok 20, $a eq '12345678abcXYZ<' ;
64 substr($a,-1,1) = '12345678';
65 ok 21, $a eq '12345678abcXYZ12345678' ;
69 ok 22, substr($a,6) eq 'xyz' ; # P Q R=S
70 ok 23, substr($a,-3) eq 'xyz' ; # P Q R=S
71 $b = substr($a,999,999) ; # warning # P R=S Q
73 eval{substr($a,999,999) = "" ; } ; # P R=S Q
74 ok 25, $@ =~ /$FATAL_MSG/;
75 ok 26, substr($a,0) eq 'abcdefxyz' ; # P=Q R=S
76 ok 27, substr($a,9) eq '' ; # P Q=R=S
77 ok 28, substr($a,-11) eq 'abcdefxyz'; # Q P R=S
78 ok 29, substr($a,-9) eq 'abcdefxyz'; # P=Q R=S
82 $b = substr($a,-7, 1) ; # warn # Q R P S
84 eval{substr($a,-7, 1) = "" ; }; # Q R P S
85 ok 31, $@ =~ /$FATAL_MSG/;
86 $b = substr($a,-7,-6) ; # warn # Q R P S
88 eval{substr($a,-7,-6) = "" ; }; # Q R P S
89 ok 33, $@ =~ /$FATAL_MSG/;
90 ok 34, substr($a,-5,-7) eq ''; # R P=Q S
91 ok 35, substr($a, 2,-7) eq ''; # R P Q S
92 ok 36, substr($a,-3,-7) eq ''; # R P Q S
93 ok 37, substr($a, 2,-5) eq ''; # P=R Q S
94 ok 38, substr($a,-3,-5) eq ''; # P=R Q S
95 ok 39, substr($a, 2,-4) eq ''; # P R Q S
96 ok 40, substr($a,-3,-4) eq ''; # P R Q S
97 ok 41, substr($a, 5,-6) eq ''; # R P Q=S
98 ok 42, substr($a, 5,-5) eq ''; # P=R Q S
99 ok 43, substr($a, 5,-3) eq ''; # P R Q=S
100 $b = substr($a, 7,-7) ; # warn # R P S Q
102 eval{substr($a, 7,-7) = "" ; }; # R P S Q
103 ok 45, $@ =~ /$FATAL_MSG/;
104 $b = substr($a, 7,-5) ; # warn # P=R S Q
106 eval{substr($a, 7,-5) = "" ; }; # P=R S Q
107 ok 47, $@ =~ /$FATAL_MSG/;
108 $b = substr($a, 7,-3) ; # warn # P Q S Q
110 eval{substr($a, 7,-3) = "" ; }; # P Q S Q
111 ok 49, $@ =~ /$FATAL_MSG/;
112 $b = substr($a, 7, 0) ; # warn # P S Q=R
114 eval{substr($a, 7, 0) = "" ; }; # P S Q=R
115 ok 51, $@ =~ /$FATAL_MSG/;
117 ok 52, substr($a,-7,2) eq ''; # Q P=R S
118 ok 53, substr($a,-7,4) eq '54'; # Q P R S
119 ok 54, substr($a,-7,7) eq '54321';# Q P R=S
120 ok 55, substr($a,-7,9) eq '54321';# Q P S R
121 ok 56, substr($a,-5,0) eq ''; # P=Q=R S
122 ok 57, substr($a,-5,3) eq '543';# P=Q R S
123 ok 58, substr($a,-5,5) eq '54321';# P=Q R=S
124 ok 59, substr($a,-5,7) eq '54321';# P=Q S R
125 ok 60, substr($a,-3,0) eq ''; # P Q=R S
126 ok 61, substr($a,-3,3) eq '321';# P Q R=S
127 ok 62, substr($a,-2,3) eq '21'; # P Q S R
128 ok 63, substr($a,0,-5) eq ''; # P=Q=R S
129 ok 64, substr($a,2,-3) eq ''; # P Q=R S
130 ok 65, substr($a,0,0) eq ''; # P=Q=R S
131 ok 66, substr($a,0,5) eq '54321';# P=Q R=S
132 ok 67, substr($a,0,7) eq '54321';# P=Q S R
133 ok 68, substr($a,2,0) eq ''; # P Q=R S
134 ok 69, substr($a,2,3) eq '321'; # P Q R=S
135 ok 70, substr($a,5,0) eq ''; # P Q=R=S
136 ok 71, substr($a,5,2) eq ''; # P Q=S R
137 ok 72, substr($a,-7,-5) eq ''; # Q P=R S
138 ok 73, substr($a,-7,-2) eq '543';# Q P R S
139 ok 74, substr($a,-5,-5) eq ''; # P=Q=R S
140 ok 75, substr($a,-5,-2) eq '543';# P=Q R S
141 ok 76, substr($a,-3,-3) eq ''; # P Q=R S
142 ok 77, substr($a,-3,-1) eq '32';# P Q R S
146 ok 78, substr($a,-2,2) eq ''; # Q P=R=S
147 ok 79, substr($a,0,0) eq ''; # P=Q=R=S
148 ok 80, substr($a,0,1) eq ''; # P=Q=S R
149 ok 81, substr($a,-2,3) eq ''; # Q P=S R
150 ok 82, substr($a,-2) eq ''; # Q P=R=S
151 ok 83, substr($a,0) eq ''; # P=Q=R=S
154 ok 84, substr($a,0,-1) eq ''; # R P=Q=S
155 $b = substr($a,-2, 0) ; # warn # Q=R P=S
157 eval{substr($a,-2, 0) = "" ; }; # Q=R P=S
158 ok 86, $@ =~ /$FATAL_MSG/;
160 $b = substr($a,-2, 1) ; # warn # Q R P=S
162 eval{substr($a,-2, 1) = "" ; }; # Q R P=S
163 ok 88, $@ =~ /$FATAL_MSG/;
165 $b = substr($a,-2,-1) ; # warn # Q R P=S
167 eval{substr($a,-2,-1) = "" ; }; # Q R P=S
168 ok 90, $@ =~ /$FATAL_MSG/;
170 $b = substr($a,-2,-2) ; # warn # Q=R P=S
172 eval{substr($a,-2,-2) = "" ; }; # Q=R P=S
173 ok 92, $@ =~ /$FATAL_MSG/;
175 $b = substr($a, 1,-2) ; # warn # R P=S Q
177 eval{substr($a, 1,-2) = "" ; }; # R P=S Q
178 ok 94, $@ =~ /$FATAL_MSG/;
180 $b = substr($a, 1, 1) ; # warn # P=S Q R
182 eval{substr($a, 1, 1) = "" ; }; # P=S Q R
183 ok 96, $@ =~ /$FATAL_MSG/;
185 $b = substr($a, 1, 0) ;# warn # P=S Q=R
187 eval{substr($a, 1, 0) = "" ; }; # P=S Q=R
188 ok 98, $@ =~ /$FATAL_MSG/;
190 $b = substr($a,1) ; # warning # P=R=S Q
192 eval{substr($a,1) = "" ; }; # P=R=S Q
193 ok 100, $@ =~ /$FATAL_MSG/;
197 ok 101, $a eq 'zxcvbnm';
199 ok 102, $a eq 'zxcvbnm';
201 ok 103, $a eq 'zxcvbnm';
202 substr($a,0,2) = 'pq';
203 ok 104, $a eq 'pqcvbnm';
204 substr($a,2,0) = 'r';
205 ok 105, $a eq 'pqrcvbnm';
206 substr($a,8,0) = 'asd';
207 ok 106, $a eq 'pqrcvbnmasd';
208 substr($a,0,2) = 'iop';
209 ok 107, $a eq 'ioprcvbnmasd';
210 substr($a,0,5) = 'fgh';
211 ok 108, $a eq 'fghvbnmasd';
212 substr($a,3,5) = 'jkl';
213 ok 109, $a eq 'fghjklsd';
214 substr($a,3,2) = '1234';
215 ok 110, $a eq 'fgh1234lsd';
218 # with lexicals (and in re-entered scopes)
223 substr($txt, -1) = "X";
224 ok 111, $txt eq "FoX";
227 substr($txt, 0, 1) = "X";
233 # coercion of references
236 substr($s, 0, 1) = 'Foo';
237 ok 113, substr($s,0,7) eq "FooRRAY" && !($w-=2);
240 # check no spurious warnings
243 # check new 4 arg replacement syntax
246 ok 115, substr($a, 0, 3, "") eq "abc" && $a eq "xyz";
247 ok 116, substr($a, 0, 0, "abc") eq "" && $a eq "abcxyz";
248 ok 117, substr($a, 3, -1, "") eq "xy" && $a eq "abcz";
250 ok 118, substr($a, 3, undef, "xy") eq "" && $a eq "abcxyz"
255 ok 119, substr($a, 3, 9999999, "") eq "xyz" && $a eq "abc";
256 eval{substr($a, -99, 0, "") };
257 ok 120, $@ =~ /$FATAL_MSG/;
258 eval{substr($a, 99, 3, "") };
259 ok 121, $@ =~ /$FATAL_MSG/;
261 substr($a, 0, length($a), "foo");
262 ok 122, $a eq "foo" && !$w;
264 # using 4 arg substr as lvalue is a compile time error
265 eval 'substr($a,0,0,"") = "abc"';
266 ok 123, $@ && $@ =~ /Can't modify substr/ && $a eq "foo";
269 ok 124, sub { shift }->(substr($a, 0, 4, "xxxx")) eq 'abcd';
270 ok 125, $a eq 'xxxxefgh';
274 my $x = substr("a\x{263a}b",0);
275 ok 126, length($x) eq 3;
277 ok 127, $x eq "\x{263a}";
279 ok 128, length($x) eq 2;
280 substr($x,0,1) = "abcd";
281 ok 129, $x eq "abcd\x{263a}";
282 ok 130, length($x) eq 5;