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 if (ord('A') == 193) {
96 $search = "foo \x71 bar";
97 $text = "a\xb1\xb1a $search $search quux";
99 $search = "foo \xc9 bar";
100 $text = "a\xa3\xa3a $search $search quux";
103 my $text_utf8 = $text;
104 utf8::upgrade($text_utf8);
105 my $search_utf8 = $search;
106 utf8::upgrade($search_utf8);
108 is (index($text, $search), 5);
109 is (rindex($text, $search), 18);
110 is (index($text, $search_utf8), 5);
111 is (rindex($text, $search_utf8), 18);
112 is (index($text_utf8, $search), 5);
113 is (rindex($text_utf8, $search), 18);
114 is (index($text_utf8, $search_utf8), 5);
115 is (rindex($text_utf8, $search_utf8), 18);
117 my $text_octets = $text_utf8;
118 utf8::encode ($text_octets);
119 my $search_octets = $search_utf8;
120 utf8::encode ($search_octets);
122 is (index($text_octets, $search_octets), 7, "index octets, octets")
123 or _diag ($text_octets, $search_octets);
124 is (rindex($text_octets, $search_octets), 21, "rindex octets, octets");
125 is (index($text_octets, $search_utf8), -1);
126 is (rindex($text_octets, $search_utf8), -1);
127 is (index($text_utf8, $search_octets), -1);
128 is (rindex($text_utf8, $search_octets), -1);
130 is (index($text_octets, $search), -1);
131 is (rindex($text_octets, $search), -1);
132 is (index($text, $search_octets), -1);
133 is (rindex($text, $search_octets), -1);
136 foreach my $utf8 ('', ', utf-8') {
137 foreach my $arraybase (0, 1, -1, -2) {
138 my $expect_pos = 2 + $arraybase;
140 my $prog = "\$[ = $arraybase; \$big = \"N\\xabN\\xab\"; ";
141 $prog .= '$big .= chr 256; chop $big; ' if $utf8;
142 $prog .= 'print rindex $big, "N", 2 + $[';
144 fresh_perl_is($prog, $expect_pos, {}, "\$[ = $arraybase$utf8");
149 skip "UTF-EBCDIC is limited to 0x7fffffff", 3 if ord("A") == 193;
151 my $a = "\x{80000000}";
153 is(index($s, 'def'), 1, "0x80000000 is a single character");
155 my $b = "\x{fffffffd}";
157 is(index($t, 'pqr'), 1, "0xfffffffd is a single character");
159 local ${^UTF8CACHE} = -1;
160 is(index($t, 'xyz'), 4, "0xfffffffd and utf8cache");
164 # Tests for NUL characters.
172 ["foo\0", 3, -1, -1],
173 ["foo\0foo\0\0", 3, 7, -1],
175 foreach my $l (1 .. 3) {
178 foreach my $test (@tests) {
180 my $str = $$test [0];
181 my $res = $$test [$l];
184 is (index ($str, $q), $res, "Find NUL character(s)");
188 # Bug #53746 shows a difference between variables and literals,
189 # so test literals as well.
191 my $test_str = qq {is (index ("$str", "$q"), $res, } .
192 qq {"Find NUL character(s)")};
193 $test_str =~ s/\0/\\0/g;