12 run_tests() unless caller;
16 my $foo = 'Now is the time for all good men to come to the aid of their country.';
18 my $first = substr($foo,0,index($foo,'the'));
19 is($first, "Now is ");
21 my $last = substr($foo,rindex($foo,'the'),100);
22 is($last, "their country.");
24 $last = substr($foo,index($foo,'Now'),2);
27 $last = substr($foo,rindex($foo,'Now'),2);
30 $last = substr($foo,index($foo,'.'),100);
33 $last = substr($foo,rindex($foo,'.'),100);
36 is(index("ababa","a",-1), 0);
37 is(index("ababa","a",0), 0);
38 is(index("ababa","a",1), 2);
39 is(index("ababa","a",2), 2);
40 is(index("ababa","a",3), 4);
41 is(index("ababa","a",4), 4);
42 is(index("ababa","a",5), -1);
44 is(rindex("ababa","a",-1), -1);
45 is(rindex("ababa","a",0), 0);
46 is(rindex("ababa","a",1), 0);
47 is(rindex("ababa","a",2), 2);
48 is(rindex("ababa","a",3), 2);
49 is(rindex("ababa","a",4), 4);
50 is(rindex("ababa","a",5), 4);
52 # tests for empty search string
53 is(index("abc", "", -1), 0);
54 is(index("abc", "", 0), 0);
55 is(index("abc", "", 1), 1);
56 is(index("abc", "", 2), 2);
57 is(index("abc", "", 3), 3);
58 is(index("abc", "", 4), 3);
59 is(rindex("abc", "", -1), 0);
60 is(rindex("abc", "", 0), 0);
61 is(rindex("abc", "", 1), 1);
62 is(rindex("abc", "", 2), 2);
63 is(rindex("abc", "", 3), 3);
64 is(rindex("abc", "", 4), 3);
66 $a = "foo \x{1234}bar";
68 is(index($a, "\x{1234}"), 4);
69 is(index($a, "bar", ), 5);
71 is(rindex($a, "\x{1234}"), 4);
72 is(rindex($a, "foo", ), 0);
75 my $needle = "\x{1230}\x{1270}";
76 my @needles = split ( //, $needle );
77 my $haystack = "\x{1228}\x{1228}\x{1230}\x{1270}";
78 foreach ( @needles ) {
79 my $a = index ( "\x{1228}\x{1228}\x{1230}\x{1270}", $_ );
80 my $b = index ( $haystack, $_ );
81 is($a, $b, q{[perl #22375] 'split'/'index' problem for utf8});
83 $needle = "\x{1270}\x{1230}"; # Transpose them.
84 @needles = split ( //, $needle );
85 foreach ( @needles ) {
86 my $a = index ( "\x{1228}\x{1228}\x{1230}\x{1270}", $_ );
87 my $b = index ( $haystack, $_ );
88 is($a, $b, q{[perl #22375] 'split'/'index' problem for utf8});
95 $search = latin1_to_native("foo \xc9 bar");
96 $text = latin1_to_native("a\xa3\xa3a $search $search quux");
98 my $text_utf8 = $text;
99 utf8::upgrade($text_utf8);
100 my $search_utf8 = $search;
101 utf8::upgrade($search_utf8);
103 is (index($text, $search), 5);
104 is (rindex($text, $search), 18);
105 is (index($text, $search_utf8), 5);
106 is (rindex($text, $search_utf8), 18);
107 is (index($text_utf8, $search), 5);
108 is (rindex($text_utf8, $search), 18);
109 is (index($text_utf8, $search_utf8), 5);
110 is (rindex($text_utf8, $search_utf8), 18);
112 my $text_octets = $text_utf8;
113 utf8::encode ($text_octets);
114 my $search_octets = $search_utf8;
115 utf8::encode ($search_octets);
117 is (index($text_octets, $search_octets), 7, "index octets, octets")
118 or _diag ($text_octets, $search_octets);
119 is (rindex($text_octets, $search_octets), 21, "rindex octets, octets");
120 is (index($text_octets, $search_utf8), -1);
121 is (rindex($text_octets, $search_utf8), -1);
122 is (index($text_utf8, $search_octets), -1);
123 is (rindex($text_utf8, $search_octets), -1);
125 is (index($text_octets, $search), -1);
126 is (rindex($text_octets, $search), -1);
127 is (index($text, $search_octets), -1);
128 is (rindex($text, $search_octets), -1);
131 foreach my $utf8 ('', ', utf-8') {
132 foreach my $arraybase (0, 1, -1, -2) {
133 my $expect_pos = 2 + $arraybase;
135 my $prog = "no warnings 'deprecated';\n";
136 $prog .= "\$[ = $arraybase; \$big = \"N\\xabN\\xab\"; ";
137 $prog .= '$big .= chr 256; chop $big; ' if $utf8;
138 $prog .= 'print rindex $big, "N", 2 + $[';
140 fresh_perl_is($prog, $expect_pos, {}, "\$[ = $arraybase$utf8");
145 skip "UTF-EBCDIC is limited to 0x7fffffff", 3 if ord("A") == 193;
147 my $a = "\x{80000000}";
149 is(index($s, 'def'), 1, "0x80000000 is a single character");
151 my $b = "\x{fffffffd}";
153 is(index($t, 'pqr'), 1, "0xfffffffd is a single character");
155 local ${^UTF8CACHE} = -1;
156 is(index($t, 'xyz'), 4, "0xfffffffd and utf8cache");
160 # Tests for NUL characters.
168 ["foo\0", 3, -1, -1],
169 ["foo\0foo\0\0", 3, 7, -1],
171 foreach my $l (1 .. 3) {
174 foreach my $test (@tests) {
176 my $str = $$test [0];
177 my $res = $$test [$l];
180 is (index ($str, $q), $res, "Find NUL character(s)");
184 # Bug #53746 shows a difference between variables and literals,
185 # so test literals as well.
187 my $test_str = qq {is (index ("$str", "$q"), $res, } .
188 qq {"Find NUL character(s)")};
189 $test_str =~ s/\0/\\0/g;