ladybird/Tests/LibRegex/RegexLibC.cpp
Ali Mohammad Pur 1c584e9d80 LibRegex: Correctly parse BRE bracket expressions
Commonly, bracket expressions are in fact, enclosed in brackets.
2021-07-10 22:58:24 +04:30

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/*
* Copyright (c) 2020, Emanuel Sprung <emanuel.sprung@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibTest/TestCase.h>
#include <AK/StringBuilder.h>
#include <LibC/regex.h>
#include <stdio.h>
TEST_CASE(catch_all)
{
String pattern = "^.*$";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "Hello World", 0, NULL, 0), REG_NOERR);
regfree(&regex);
}
TEST_CASE(simple_start)
{
String pattern = "^hello friends";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "Hello!", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "hello friends", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "Well, hello friends", 0, NULL, 0), REG_NOMATCH);
regfree(&regex);
}
TEST_CASE(simple_end)
{
String pattern = ".*hello\\.\\.\\. there$";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "Hallo", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "I said fyhello... there", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "ahello... therea", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "hello.. there", 0, NULL, 0), REG_NOMATCH);
regfree(&regex);
}
TEST_CASE(simple_period)
{
String pattern = "hello.";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "Hello1", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "hello1", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "hello2", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "hello?", 0, NULL, 0), REG_NOERR);
regfree(&regex);
}
TEST_CASE(simple_period_end)
{
String pattern = "hello.$";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED | REG_NOSUB), REG_NOERR);
EXPECT_EQ(regexec(&regex, "Hello1", 0, NULL, REG_NOSUB), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "hello1hello1", 0, NULL, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(regexec(&regex, "hello2hell", 0, NULL, REG_GLOBAL), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "hello?", 0, NULL, REG_NOSUB), REG_NOERR);
regfree(&regex);
}
TEST_CASE(simple_escaped)
{
String pattern = "hello\\.";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "hello", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "hello.", 0, NULL, 0), REG_NOERR);
regfree(&regex);
}
TEST_CASE(simple_period2_end)
{
String pattern = ".*hi... there$";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "Hello there", 0, NULL, REG_GLOBAL), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "I said fyhi... there", 0, NULL, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(regexec(&regex, "....hi... ", 0, NULL, REG_GLOBAL), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "I said fyhihii there", 0, NULL, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(regexec(&regex, "I said fyhihi there", 0, NULL, REG_GLOBAL), REG_NOMATCH);
regfree(&regex);
}
TEST_CASE(simple_plus)
{
String pattern = "a+";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED | REG_NOSUB), REG_NOERR);
EXPECT_EQ(regexec(&regex, "b", 0, NULL, REG_NOSUB), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "a", 0, NULL, REG_NOSUB), REG_NOERR);
EXPECT_EQ(regexec(&regex, "aaaaaabbbbb", 0, NULL, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(regexec(&regex, "aaaaaaaaaaa", 0, NULL, REG_GLOBAL), REG_NOERR);
regfree(&regex);
}
TEST_CASE(simple_questionmark)
{
String pattern = "da?d";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "a", 0, NULL, REG_GLOBAL), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "daa", 0, NULL, REG_GLOBAL), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "ddddd", 0, NULL, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(regexec(&regex, "dd", 0, NULL, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(regexec(&regex, "dad", 0, NULL, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(regexec(&regex, "dada", 0, NULL, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(regexec(&regex, "adadaa", 0, NULL, REG_GLOBAL), REG_NOERR);
regfree(&regex);
}
TEST_CASE(simple_questionmark_matchall)
{
String pattern = "da?d";
regex_t regex;
static constexpr int num_matches { 5 };
regmatch_t matches[num_matches];
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "a", num_matches, matches, REG_GLOBAL), REG_NOMATCH);
EXPECT_EQ(matches[0].rm_cnt, 0);
EXPECT_EQ(regexec(&regex, "daa", num_matches, matches, REG_GLOBAL), REG_NOMATCH);
EXPECT_EQ(matches[0].rm_cnt, 0);
EXPECT_EQ(regexec(&regex, "ddddd", num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 2);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 2);
EXPECT_EQ(matches[1].rm_so, 2);
EXPECT_EQ(matches[1].rm_eo, 4);
EXPECT_EQ(regexec(&regex, "dd", num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(regexec(&regex, "dad", num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(regexec(&regex, "dada", num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(regexec(&regex, "adadaa", num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
regfree(&regex);
}
TEST_CASE(character_class)
{
String pattern = "[[:alpha:]]";
regex_t regex;
static constexpr int num_matches { 5 };
regmatch_t matches[num_matches];
String haystack = "[Window]\nOpacity=255\nAudibleBeep=0\n";
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, haystack.characters(), num_matches, matches, 0), REG_NOMATCH);
EXPECT_EQ(matches[0].rm_cnt, 0);
EXPECT_EQ(regexec(&regex, haystack.characters(), num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 24);
EXPECT_EQ(haystack.substring_view(matches[0].rm_so, matches[0].rm_eo - matches[0].rm_so), "W");
EXPECT_EQ(haystack.substring_view(matches[1].rm_so, matches[1].rm_eo - matches[1].rm_so), "i");
regfree(&regex);
}
TEST_CASE(character_class2)
{
String pattern = "[[:alpha:]]*=([[:digit:]]*)|\\[(.*)\\]";
regex_t regex;
static constexpr int num_matches { 9 };
regmatch_t matches[num_matches];
String haystack = "[Window]\nOpacity=255\nAudibleBeep=0\n";
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED | REG_NEWLINE), REG_NOERR);
EXPECT_EQ(regexec(&regex, haystack.characters(), num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 3);
#if 0
for (int i = 0; i < num_matches; ++i) {
fprintf(stderr, "Matches[%i].rm_so: %li, .rm_eo: %li .rm_cnt: %li: ", i, matches[i].rm_so, matches[i].rm_eo, matches[i].rm_cnt);
fprintf(stderr, "haystack length: %lu\n", haystack.length());
if (matches[i].rm_so != -1)
fprintf(stderr, "%s\n", haystack.substring_view(matches[i].rm_so, matches[i].rm_eo - matches[i].rm_so).to_string().characters());
}
#endif
EXPECT_EQ(haystack.substring_view(matches[0].rm_so, matches[0].rm_eo - matches[0].rm_so), "[Window]");
EXPECT_EQ(matches[1].rm_so, -1);
EXPECT_EQ(matches[1].rm_eo, -1);
EXPECT_EQ(matches[1].rm_cnt, 0);
EXPECT_EQ(haystack.substring_view(matches[2].rm_so, matches[2].rm_eo - matches[2].rm_so), "Window");
EXPECT_EQ(haystack.substring_view(matches[3].rm_so, matches[3].rm_eo - matches[3].rm_so), "Opacity=255");
EXPECT_EQ(haystack.substring_view(matches[4].rm_so, matches[4].rm_eo - matches[4].rm_so), "255");
EXPECT_EQ(matches[5].rm_so, -1);
EXPECT_EQ(matches[5].rm_eo, -1);
EXPECT_EQ(matches[5].rm_cnt, 0);
EXPECT_EQ(haystack.substring_view(matches[6].rm_so, matches[6].rm_eo - matches[6].rm_so), "AudibleBeep=0");
EXPECT_EQ(haystack.substring_view(matches[7].rm_so, matches[7].rm_eo - matches[7].rm_so), "0");
EXPECT_EQ(matches[8].rm_so, -1);
EXPECT_EQ(matches[8].rm_eo, -1);
EXPECT_EQ(matches[8].rm_cnt, 0);
regfree(&regex);
}
TEST_CASE(escaped_char_questionmark)
{
String pattern = "This\\.?And\\.?That";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "ThisAndThat", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "This.And.That", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "This And That", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "This..And..That", 0, NULL, 0), REG_NOMATCH);
regfree(&regex);
}
TEST_CASE(char_qualifier_asterisk)
{
String pattern = "regex*";
regex_t regex;
static constexpr int num_matches { 5 };
regmatch_t matches[num_matches];
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "#include <regex.h>", num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
regfree(&regex);
}
TEST_CASE(char_utf8)
{
String pattern = "😀";
regex_t regex;
static constexpr int num_matches { 5 };
regmatch_t matches[num_matches];
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "Привет, мир! 😀 γειά σου κόσμος 😀 こんにちは世界", num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 2);
regfree(&regex);
}
TEST_CASE(parens)
{
String pattern = "test(hello)test";
regex_t regex;
static constexpr int num_matches { 5 };
regmatch_t matches[num_matches];
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "testhellotest", num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 13);
EXPECT_EQ(matches[1].rm_so, 4);
EXPECT_EQ(matches[1].rm_eo, 9);
regfree(&regex);
}
TEST_CASE(parser_error_parens)
{
String pattern = "test()test";
regex_t regex;
static constexpr int num_matches { 5 };
regmatch_t matches[num_matches];
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_EMPTY_EXPR);
EXPECT_EQ(regexec(&regex, "testhellotest", num_matches, matches, 0), REG_EMPTY_EXPR);
regfree(&regex);
}
TEST_CASE(parser_error_special_characters_used_at_wrong_place)
{
String pattern;
regex_t regex;
static constexpr int num_matches { 5 };
regmatch_t matches[num_matches];
Vector<char, 4> chars = { '*', '+', '?', '}' };
StringBuilder b;
for (auto& ch : chars) {
auto error_code_to_check = ch == '}' ? REG_EBRACE : REG_BADRPT;
// First in ere
b.clear();
b.append(ch);
pattern = b.build();
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), error_code_to_check);
EXPECT_EQ(regexec(&regex, "test", num_matches, matches, 0), error_code_to_check);
regfree(&regex);
// After vertical line
b.clear();
b.append("a|");
b.append(ch);
pattern = b.build();
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), error_code_to_check);
EXPECT_EQ(regexec(&regex, "test", num_matches, matches, 0), error_code_to_check);
regfree(&regex);
// After circumflex
b.clear();
b.append("^");
b.append(ch);
pattern = b.build();
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), error_code_to_check);
EXPECT_EQ(regexec(&regex, "test", num_matches, matches, 0), error_code_to_check);
regfree(&regex);
// After dollar
b.clear();
b.append("$");
b.append(ch);
pattern = b.build();
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), error_code_to_check);
EXPECT_EQ(regexec(&regex, "test", num_matches, matches, 0), error_code_to_check);
regfree(&regex);
// After left parens
b.clear();
b.append("(");
b.append(ch);
b.append(")");
pattern = b.build();
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), error_code_to_check);
EXPECT_EQ(regexec(&regex, "test", num_matches, matches, 0), error_code_to_check);
regfree(&regex);
}
}
TEST_CASE(parser_error_vertical_line_used_at_wrong_place)
{
String pattern;
regex_t regex;
static constexpr int num_matches { 5 };
regmatch_t matches[num_matches];
// First in ere
pattern = "|asdf";
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_EMPTY_EXPR);
EXPECT_EQ(regexec(&regex, "test", num_matches, matches, 0), REG_EMPTY_EXPR);
regfree(&regex);
// Last in ere
pattern = "asdf|";
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_EMPTY_EXPR);
EXPECT_EQ(regexec(&regex, "test", num_matches, matches, 0), REG_EMPTY_EXPR);
regfree(&regex);
// After left parens
pattern = "(|asdf)";
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_EMPTY_EXPR);
EXPECT_EQ(regexec(&regex, "test", num_matches, matches, 0), REG_EMPTY_EXPR);
regfree(&regex);
// Proceed right parens
pattern = "(asdf)|";
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_EMPTY_EXPR);
EXPECT_EQ(regexec(&regex, "test", num_matches, matches, 0), REG_EMPTY_EXPR);
regfree(&regex);
}
TEST_CASE(parens_qualifier_questionmark)
{
String pattern = "test(hello)?test";
regex_t regex;
static constexpr int num_matches { 5 };
regmatch_t matches[num_matches];
const char* match_str;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
match_str = "testtest";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 8);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "testtest");
match_str = "testhellotest";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 13);
EXPECT_EQ(matches[1].rm_so, 4);
EXPECT_EQ(matches[1].rm_eo, 9);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "testhellotest");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "hello");
regfree(&regex);
}
TEST_CASE(parens_qualifier_asterisk)
{
String pattern = "test(hello)*test";
regex_t regex;
static constexpr int num_matches { 6 };
regmatch_t matches[num_matches];
const char* match_str;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
match_str = "testtest";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 8);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "testtest");
match_str = "testhellohellotest";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 18);
EXPECT_EQ(matches[1].rm_so, 9);
EXPECT_EQ(matches[1].rm_eo, 14);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "testhellohellotest");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "hello");
match_str = "testhellohellotest, testhellotest";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 2);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 18);
EXPECT_EQ(matches[1].rm_so, 9);
EXPECT_EQ(matches[1].rm_eo, 14);
EXPECT_EQ(matches[2].rm_so, 20);
EXPECT_EQ(matches[2].rm_eo, 33);
EXPECT_EQ(matches[3].rm_so, 24);
EXPECT_EQ(matches[3].rm_eo, 29);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "testhellohellotest");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "hello");
EXPECT_EQ(StringView(&match_str[matches[2].rm_so], matches[2].rm_eo - matches[2].rm_so), "testhellotest");
EXPECT_EQ(StringView(&match_str[matches[3].rm_so], matches[3].rm_eo - matches[3].rm_so), "hello");
regfree(&regex);
}
TEST_CASE(parens_qualifier_asterisk_2)
{
String pattern = "test(.*)test";
regex_t regex;
static constexpr int num_matches { 6 };
regmatch_t matches[num_matches];
const char* match_str;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
match_str = "testasdftest";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 12);
EXPECT_EQ(matches[1].rm_so, 4);
EXPECT_EQ(matches[1].rm_eo, 8);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "testasdftest");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "asdf");
match_str = "testasdfasdftest";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 16);
EXPECT_EQ(matches[1].rm_so, 4);
EXPECT_EQ(matches[1].rm_eo, 12);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "testasdfasdftest");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "asdfasdf");
match_str = "testaaaatest, testbbbtest, testtest";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 35);
EXPECT_EQ(matches[1].rm_so, 4);
EXPECT_EQ(matches[1].rm_eo, 31);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "testaaaatest, testbbbtest, testtest");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "aaaatest, testbbbtest, test");
regfree(&regex);
}
TEST_CASE(mulit_parens_qualifier_too_less_result_values)
{
String pattern = "test(a)?(b)?(c)?test";
regex_t regex;
static constexpr int num_matches { 4 };
regmatch_t matches[num_matches];
const char* match_str;
matches[3] = { -2, -2, 100 };
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
match_str = "testabtest";
EXPECT_EQ(regexec(&regex, match_str, num_matches - 1, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 10);
EXPECT_EQ(matches[1].rm_so, 4);
EXPECT_EQ(matches[1].rm_eo, 5);
EXPECT_EQ(matches[2].rm_so, 5);
EXPECT_EQ(matches[2].rm_eo, 6);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "testabtest");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "a");
EXPECT_EQ(StringView(&match_str[matches[2].rm_so], matches[2].rm_eo - matches[2].rm_so), "b");
EXPECT_EQ(matches[3].rm_so, -2);
EXPECT_EQ(matches[3].rm_eo, -2);
EXPECT_EQ(matches[3].rm_cnt, 100);
match_str = "testabctest";
EXPECT_EQ(regexec(&regex, match_str, num_matches - 1, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 11);
EXPECT_EQ(matches[1].rm_so, 4);
EXPECT_EQ(matches[1].rm_eo, 5);
EXPECT_EQ(matches[2].rm_so, 5);
EXPECT_EQ(matches[2].rm_eo, 6);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "testabctest");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "a");
EXPECT_EQ(StringView(&match_str[matches[2].rm_so], matches[2].rm_eo - matches[2].rm_so), "b");
EXPECT_EQ(matches[3].rm_so, -2);
EXPECT_EQ(matches[3].rm_eo, -2);
EXPECT_EQ(matches[3].rm_cnt, 100);
match_str = "testabctest, testabctest";
EXPECT_EQ(regexec(&regex, match_str, num_matches - 1, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 2);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 11);
EXPECT_EQ(matches[1].rm_so, 4);
EXPECT_EQ(matches[1].rm_eo, 5);
EXPECT_EQ(matches[2].rm_so, 5);
EXPECT_EQ(matches[2].rm_eo, 6);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "testabctest");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "a");
EXPECT_EQ(StringView(&match_str[matches[2].rm_so], matches[2].rm_eo - matches[2].rm_so), "b");
EXPECT_EQ(matches[3].rm_so, -2);
EXPECT_EQ(matches[3].rm_eo, -2);
EXPECT_EQ(matches[3].rm_cnt, 100);
regfree(&regex);
}
TEST_CASE(multi_parens_qualifier_questionmark)
{
String pattern = "test(a)?(b)?(c)?test";
regex_t regex;
static constexpr int num_matches { 8 };
regmatch_t matches[num_matches];
const char* match_str;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
match_str = "testtest";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 8);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "testtest");
match_str = "testabctest";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 11);
EXPECT_EQ(matches[1].rm_so, 4);
EXPECT_EQ(matches[1].rm_eo, 5);
EXPECT_EQ(matches[2].rm_so, 5);
EXPECT_EQ(matches[2].rm_eo, 6);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "testabctest");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "a");
EXPECT_EQ(StringView(&match_str[matches[2].rm_so], matches[2].rm_eo - matches[2].rm_so), "b");
match_str = "testabctest, testactest";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 2);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 11);
EXPECT_EQ(matches[1].rm_so, 4);
EXPECT_EQ(matches[1].rm_eo, 5);
EXPECT_EQ(matches[2].rm_so, 5);
EXPECT_EQ(matches[2].rm_eo, 6);
EXPECT_EQ(matches[3].rm_so, 6);
EXPECT_EQ(matches[3].rm_eo, 7);
EXPECT_EQ(matches[4].rm_so, 13);
EXPECT_EQ(matches[4].rm_eo, 23);
EXPECT_EQ(matches[5].rm_so, 17);
EXPECT_EQ(matches[5].rm_eo, 18);
EXPECT_EQ(matches[6].rm_so, -1);
EXPECT_EQ(matches[6].rm_eo, -1);
EXPECT_EQ(matches[7].rm_so, 18);
EXPECT_EQ(matches[7].rm_eo, 19);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "testabctest");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "a");
EXPECT_EQ(StringView(&match_str[matches[2].rm_so], matches[2].rm_eo - matches[2].rm_so), "b");
EXPECT_EQ(StringView(&match_str[matches[3].rm_so], matches[3].rm_eo - matches[3].rm_so), "c");
EXPECT_EQ(StringView(&match_str[matches[4].rm_so], matches[4].rm_eo - matches[4].rm_so), "testactest");
EXPECT_EQ(StringView(&match_str[matches[5].rm_so], matches[5].rm_eo - matches[5].rm_so), "a");
EXPECT_EQ(StringView(&match_str[matches[6].rm_so], matches[6].rm_eo - matches[6].rm_so), "");
EXPECT_EQ(StringView(&match_str[matches[7].rm_so], matches[7].rm_eo - matches[7].rm_so), "c");
regfree(&regex);
}
TEST_CASE(simple_alternative)
{
String pattern = "test|hello|friends";
regex_t regex;
static constexpr int num_matches { 1 };
regmatch_t matches[num_matches];
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "test", num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 4);
EXPECT_EQ(regexec(&regex, "hello", num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 5);
EXPECT_EQ(regexec(&regex, "friends", num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 7);
regfree(&regex);
}
TEST_CASE(alternative_match_groups)
{
String pattern = "test(a)?(b)?|hello ?(dear|my)? friends";
regex_t regex;
static constexpr int num_matches { 8 };
regmatch_t matches[num_matches];
const char* match_str;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
match_str = "test";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 4);
EXPECT_EQ(matches[1].rm_so, -1);
EXPECT_EQ(matches[1].rm_eo, -1);
EXPECT_EQ(matches[2].rm_so, -1);
EXPECT_EQ(matches[2].rm_eo, -1);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "test");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "");
EXPECT_EQ(StringView(&match_str[matches[2].rm_so], matches[2].rm_eo - matches[2].rm_so), "");
match_str = "testa";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 5);
EXPECT_EQ(matches[1].rm_so, 4);
EXPECT_EQ(matches[1].rm_eo, 5);
EXPECT_EQ(matches[2].rm_so, -1);
EXPECT_EQ(matches[2].rm_eo, -1);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "testa");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "a");
EXPECT_EQ(StringView(&match_str[matches[2].rm_so], matches[2].rm_eo - matches[2].rm_so), "");
match_str = "testb";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 5);
EXPECT_EQ(matches[1].rm_so, -1);
EXPECT_EQ(matches[1].rm_eo, -1);
EXPECT_EQ(matches[2].rm_so, 4);
EXPECT_EQ(matches[2].rm_eo, 5);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "testb");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "");
EXPECT_EQ(StringView(&match_str[matches[2].rm_so], matches[2].rm_eo - matches[2].rm_so), "b");
match_str = "hello friends";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 13);
EXPECT_EQ(matches[1].rm_so, -1);
EXPECT_EQ(matches[1].rm_eo, -1);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "hello friends");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "");
match_str = "hello dear friends";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 18);
EXPECT_EQ(matches[1].rm_so, -1);
EXPECT_EQ(matches[1].rm_eo, -1);
EXPECT_EQ(matches[2].rm_so, -1);
EXPECT_EQ(matches[2].rm_eo, -1);
EXPECT_EQ(matches[3].rm_so, 6);
EXPECT_EQ(matches[3].rm_eo, 10);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "hello dear friends");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "");
EXPECT_EQ(StringView(&match_str[matches[2].rm_so], matches[2].rm_eo - matches[2].rm_so), "");
EXPECT_EQ(StringView(&match_str[matches[3].rm_so], matches[3].rm_eo - matches[3].rm_so), "dear");
match_str = "hello my friends";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 16);
EXPECT_EQ(matches[1].rm_so, -1);
EXPECT_EQ(matches[1].rm_eo, -1);
EXPECT_EQ(matches[2].rm_so, -1);
EXPECT_EQ(matches[2].rm_eo, -1);
EXPECT_EQ(matches[3].rm_so, 6);
EXPECT_EQ(matches[3].rm_eo, 8);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "hello my friends");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "");
EXPECT_EQ(StringView(&match_str[matches[2].rm_so], matches[2].rm_eo - matches[2].rm_so), "");
EXPECT_EQ(StringView(&match_str[matches[3].rm_so], matches[3].rm_eo - matches[3].rm_so), "my");
match_str = "testabc";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOMATCH);
EXPECT_EQ(matches[0].rm_cnt, 0);
EXPECT_EQ(matches[0].rm_so, -1);
EXPECT_EQ(matches[0].rm_eo, -1);
match_str = "hello test friends";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOMATCH);
EXPECT_EQ(matches[0].rm_cnt, 0);
EXPECT_EQ(matches[0].rm_so, -1);
EXPECT_EQ(matches[0].rm_eo, -1);
regfree(&regex);
}
TEST_CASE(parens_qualifier_exact)
{
String pattern = "(hello){3}";
regex_t regex;
static constexpr int num_matches { 5 };
regmatch_t matches[num_matches];
const char* match_str;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
match_str = "hello";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOMATCH);
EXPECT_EQ(matches[0].rm_cnt, 0);
match_str = "hellohellohello";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 15);
EXPECT_EQ(matches[1].rm_so, 10);
EXPECT_EQ(matches[1].rm_eo, 15);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "hellohellohello");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "hello");
match_str = "hellohellohellohello";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 15);
EXPECT_EQ(matches[1].rm_so, 10);
EXPECT_EQ(matches[1].rm_eo, 15);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "hellohellohello");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "hello");
match_str = "test hellohellohello";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 5);
EXPECT_EQ(matches[0].rm_eo, 20);
EXPECT_EQ(matches[1].rm_so, 15);
EXPECT_EQ(matches[1].rm_eo, 20);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "hellohellohello");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "hello");
regfree(&regex);
}
TEST_CASE(parens_qualifier_minimum)
{
String pattern = "(hello){3,}";
regex_t regex;
static constexpr int num_matches { 5 };
regmatch_t matches[num_matches];
const char* match_str;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
match_str = "hello";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOMATCH);
EXPECT_EQ(matches[0].rm_cnt, 0);
match_str = "hellohellohello";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 15);
EXPECT_EQ(matches[1].rm_so, 10);
EXPECT_EQ(matches[1].rm_eo, 15);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "hellohellohello");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "hello");
match_str = "hellohellohellohello";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, REG_SEARCH), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 20);
EXPECT_EQ(matches[1].rm_so, 15);
EXPECT_EQ(matches[1].rm_eo, 20);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "hellohellohellohello");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "hello");
match_str = "test hellohellohello";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 5);
EXPECT_EQ(matches[0].rm_eo, 20);
EXPECT_EQ(matches[1].rm_so, 15);
EXPECT_EQ(matches[1].rm_eo, 20);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "hellohellohello");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "hello");
match_str = "test hellohellohellohello";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 5);
EXPECT_EQ(matches[0].rm_eo, 25);
EXPECT_EQ(matches[1].rm_so, 20);
EXPECT_EQ(matches[1].rm_eo, 25);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "hellohellohellohello");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "hello");
regfree(&regex);
}
TEST_CASE(parens_qualifier_maximum)
{
String pattern = "(hello){2,3}";
regex_t regex;
static constexpr int num_matches { 5 };
regmatch_t matches[num_matches];
const char* match_str;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
match_str = "hello";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOMATCH);
EXPECT_EQ(matches[0].rm_cnt, 0);
match_str = "hellohellohello";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 15);
EXPECT_EQ(matches[1].rm_so, 10);
EXPECT_EQ(matches[1].rm_eo, 15);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "hellohellohello");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "hello");
match_str = "hellohellohellohello";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 0);
EXPECT_EQ(matches[0].rm_eo, 15);
EXPECT_EQ(matches[1].rm_so, 10);
EXPECT_EQ(matches[1].rm_eo, 15);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "hellohellohello");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "hello");
match_str = "test hellohellohello";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 5);
EXPECT_EQ(matches[0].rm_eo, 20);
EXPECT_EQ(matches[1].rm_so, 15);
EXPECT_EQ(matches[1].rm_eo, 20);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "hellohellohello");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "hello");
match_str = "test hellohellohellohello";
EXPECT_EQ(regexec(&regex, match_str, num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(matches[0].rm_so, 5);
EXPECT_EQ(matches[0].rm_eo, 20);
EXPECT_EQ(matches[1].rm_so, 15);
EXPECT_EQ(matches[1].rm_eo, 20);
EXPECT_EQ(StringView(&match_str[matches[0].rm_so], matches[0].rm_eo - matches[0].rm_so), "hellohellohello");
EXPECT_EQ(StringView(&match_str[matches[1].rm_so], matches[1].rm_eo - matches[1].rm_so), "hello");
regfree(&regex);
}
TEST_CASE(char_qualifier_min_max)
{
String pattern = "c{3,30}";
regex_t regex;
static constexpr int num_matches { 5 };
regmatch_t matches[num_matches];
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "cc", num_matches, matches, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "ccc", num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "cccccccccccccccccccccccccccccc", num_matches, matches, 0), REG_NOERR);
EXPECT_EQ(matches[0].rm_cnt, 1);
EXPECT_EQ(regexec(&regex, "ccccccccccccccccccccccccccccccc", num_matches, matches, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "ccccccccccccccccccccccccccccccc", num_matches, matches, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(regexec(&regex, "cccccccccccccccccccccccccccccccc", num_matches, matches, 0), REG_NOMATCH);
regfree(&regex);
}
TEST_CASE(simple_bracket_chars)
{
String pattern = "[abc]";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "a", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "b", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "c", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "d", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "e", 0, NULL, 0), REG_NOMATCH);
regfree(&regex);
}
TEST_CASE(simple_bracket_chars_inverse)
{
String pattern = "[^abc]";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "a", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "b", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "c", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "d", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "e", 0, NULL, 0), REG_NOERR);
regfree(&regex);
}
TEST_CASE(simple_bracket_chars_range)
{
String pattern = "[a-d]";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "a", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "b", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "c", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "d", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "e", 0, NULL, 0), REG_NOMATCH);
regfree(&regex);
}
TEST_CASE(simple_bracket_chars_range_inverse)
{
String pattern = "[^a-df-z]";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "a", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "b", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "c", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "d", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "e", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "k", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "z", 0, NULL, 0), REG_NOMATCH);
regfree(&regex);
}
TEST_CASE(bracket_character_class_uuid)
{
String pattern = "^([[:xdigit:]]{8})-([[:xdigit:]]{4})-([[:xdigit:]]{4})-([[:xdigit:]]{4})-([[:xdigit:]]{12})$";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "fb9b62a2-1579-4e3a-afba-76239ccb6583", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "fb9b62a2", 0, NULL, 0), REG_NOMATCH);
regfree(&regex);
}
TEST_CASE(simple_bracket_character_class_inverse)
{
String pattern = "[^[:digit:]]";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "1", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "2", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "3", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "d", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "e", 0, NULL, 0), REG_NOERR);
regfree(&regex);
}
TEST_CASE(email_address)
{
String pattern = "^[A-Z0-9a-z._%+-]{1,64}@(?:[A-Za-z0-9-]{1,63}\\.){1,125}[A-Za-z]{2,63}$";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_NOERR);
EXPECT_EQ(regexec(&regex, "emanuel.sprung@gmail.com", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "kling@serenityos.org", 0, NULL, 0), REG_NOERR);
regfree(&regex);
}
TEST_CASE(error_message)
{
String pattern = "^[A-Z0-9[a-z._%+-]{1,64}@[A-Za-z0-9-]{1,63}\\.{1,125}[A-Za-z]{2,63}$";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED), REG_EBRACK);
EXPECT_EQ(regexec(&regex, "asdf@asdf.com", 0, NULL, 0), REG_EBRACK);
char buf[1024];
size_t buflen = 1024;
auto len = regerror(0, &regex, buf, buflen);
String expected = "Error during parsing of regular expression:\n ^[A-Z0-9[a-z._%+-]{1,64}@[A-Za-z0-9-]{1,63}\\.{1,125}[A-Za-z]{2,63}$\n ^---- [ ] imbalance.";
for (size_t i = 0; i < len; ++i) {
EXPECT_EQ(buf[i], expected[i]);
}
regfree(&regex);
}
TEST_CASE(simple_ignorecase)
{
String pattern = "^hello friends";
regex_t regex;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED | REG_NOSUB | REG_ICASE), REG_NOERR);
EXPECT_EQ(regexec(&regex, "Hello Friends", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "hello Friends", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "hello Friends!", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "hello Friends!", 0, NULL, REG_GLOBAL), REG_NOERR);
EXPECT_EQ(regexec(&regex, "hell Friends", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "hell Friends", 0, NULL, REG_GLOBAL), REG_NOMATCH);
regfree(&regex);
}
TEST_CASE(simple_notbol_noteol)
{
String pattern = "^hello friends$";
String pattern2 = "hello friends";
regex_t regex, regex2;
EXPECT_EQ(regcomp(&regex, pattern.characters(), REG_EXTENDED | REG_NOSUB | REG_ICASE), REG_NOERR);
EXPECT_EQ(regcomp(&regex2, pattern2.characters(), REG_EXTENDED | REG_NOSUB | REG_ICASE), REG_NOERR);
EXPECT_EQ(regexec(&regex, "hello friends", 0, NULL, REG_NOTBOL), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "hello friends", 0, NULL, REG_NOTEOL), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "hello friends", 0, NULL, REG_NOTBOL | REG_NOTEOL), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "a hello friends b", 0, NULL, REG_NOTBOL), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "a hello friends", 0, NULL, REG_NOTBOL), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "a hello friends", 0, NULL, REG_NOTBOL | REG_SEARCH), REG_NOERR);
EXPECT_EQ(regexec(&regex, "a hello friends b", 0, NULL, REG_NOTBOL | REG_SEARCH), REG_NOERR);
EXPECT_EQ(regexec(&regex, "a hello friends b", 0, NULL, REG_NOTEOL), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "hello friends b", 0, NULL, REG_NOTEOL), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "hello friends b", 0, NULL, REG_NOTEOL | REG_SEARCH), REG_NOERR);
EXPECT_EQ(regexec(&regex, "a hello friends b", 0, NULL, REG_NOTEOL | REG_SEARCH), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "a hello friends b", 0, NULL, REG_NOTBOL | REG_NOTEOL), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "a hello friends b", 0, NULL, REG_NOTBOL | REG_NOTEOL | REG_SEARCH), REG_NOMATCH);
EXPECT_EQ(regexec(&regex2, "hello friends", 0, NULL, REG_NOTBOL), REG_NOMATCH);
EXPECT_EQ(regexec(&regex2, "hello friends", 0, NULL, REG_NOTEOL), REG_NOMATCH);
regfree(&regex);
regfree(&regex2);
}
TEST_CASE(bre_basic)
{
regex_t regex;
EXPECT_EQ(regcomp(&regex, "hello friends", REG_NOSUB | REG_ICASE), REG_NOERR);
EXPECT_EQ(regexec(&regex, "hello friends", 0, NULL, 0), REG_NOERR);
regfree(&regex);
EXPECT_EQ(regcomp(&regex, "\\(15\\)\\1", REG_NOSUB | REG_ICASE), REG_NOERR);
EXPECT_EQ(regexec(&regex, "1515", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "55", 0, NULL, 0), REG_NOMATCH);
regfree(&regex);
EXPECT_EQ(regcomp(&regex, "15\\{1,2\\}", REG_NOSUB | REG_ICASE), REG_NOERR);
EXPECT_EQ(regexec(&regex, "15", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "1515", 0, NULL, 0), REG_NOMATCH);
EXPECT_EQ(regexec(&regex, "55", 0, NULL, 0), REG_NOMATCH);
regfree(&regex);
EXPECT_EQ(regcomp(&regex, "15{1,2}", REG_NOSUB | REG_ICASE), REG_NOERR);
EXPECT_EQ(regexec(&regex, "15{1,2}", 0, NULL, 0), REG_NOERR);
regfree(&regex);
EXPECT_EQ(regcomp(&regex, "1[56]", REG_NOSUB | REG_ICASE), REG_NOERR);
EXPECT_EQ(regexec(&regex, "15", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "16", 0, NULL, 0), REG_NOERR);
EXPECT_EQ(regexec(&regex, "17", 0, NULL, 0), REG_NOMATCH);
regfree(&regex);
}