mirror of https://github.com/cesanta/slre.git
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/*
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* Copyright (c) 2004-2013 Sergey Lyubka <valenok@gmail.com> |
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* Copyright (c) 2013 Cesanta Software Limited |
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* All rights reserved |
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* |
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* This library is dual-licensed: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation. For the terms of this |
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* license, see <http://www.gnu.org/licenses/>.
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* |
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* You are free to use this library under the terms of the GNU General |
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* Public License, but WITHOUT ANY WARRANTY; without even the implied |
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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* See the GNU General Public License for more details. |
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* |
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* Alternatively, you can license this library under a commercial |
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* license, as set out in <http://cesanta.com/products.html>.
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*/ |
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/*
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* To unit-test SLRE, do |
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* cc -W -Wall -O2 -ansi -pedantic -pipe unit_test.c -o /tmp/t && /tmp/t |
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*/ |
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#include "slre.c" |
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static int static_total_tests = 0; |
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static int static_failed_tests = 0; |
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#define FAIL(str, line) do { \ |
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printf("Fail on line %d: [%s]\n", line, str); \
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static_failed_tests++; \
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} while (0) |
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#define ASSERT(expr) do { \ |
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static_total_tests++; \
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if (!(expr)) FAIL(#expr, __LINE__); \
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} while (0) |
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int main(void) { |
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const char *msg = ""; |
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struct slre_cap caps[10]; |
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#if 0 |
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#endif |
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ASSERT(slre_match("fo", "foo", 3, NULL, &msg) == 2); |
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ASSERT(slre_match(".+", "foo", 3, NULL, &msg) == 3); |
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ASSERT(slre_match(".+k", "fooklmn", 7, NULL, &msg) == 4); |
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ASSERT(slre_match(".+k.", "fooklmn", 7, NULL, &msg) == 5); |
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ASSERT(slre_match("p+", "fooklmn", 7, NULL, &msg) == 0); |
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ASSERT(slre_match("ok", "fooklmn", 7, NULL, &msg) == 4); |
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ASSERT(slre_match("lmno", "fooklmn", 7, NULL, &msg) == 0); |
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ASSERT(slre_match("mn.", "fooklmn", 7, NULL, &msg) == 0); |
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ASSERT(slre_match("o", "fooklmn", 7, NULL, &msg) == 2); |
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ASSERT(slre_match("^o", "fooklmn", 7, NULL, &msg) == 0); |
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ASSERT(slre_match("^", "fooklmn", 7, NULL, &msg) == 0); |
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ASSERT(slre_match("n$", "fooklmn", 7, NULL, &msg) == 7); |
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ASSERT(slre_match("n$k", "fooklmn", 7, NULL, &msg) == 0); |
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ASSERT(slre_match("l$", "fooklmn", 7, NULL, &msg) == 0); |
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ASSERT(slre_match(".$", "fooklmn", 7, NULL, &msg) == 7); |
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ASSERT(slre_match("a?", "fooklmn", 7, NULL, &msg) == 0); |
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ASSERT(slre_match("\\_", "fooklmn", 7, NULL, &msg) == 0); |
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ASSERT(strcmp(msg, static_error_invalid_metacharacter) == 0); |
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ASSERT(slre_match("+", "fooklmn", 7, NULL, &msg) == 0); |
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ASSERT(strcmp(msg, static_error_unexpected_quantifier) == 0); |
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ASSERT(slre_match("()+", "fooklmn", 7, NULL, &msg) == 0); |
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ASSERT(strcmp(msg, static_error_no_match) == 0); |
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/* Balancing brackets */ |
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ASSERT(slre_match("(x))", "fooklmn", 7, NULL, &msg) == 0); |
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ASSERT(strcmp(msg, static_error_unbalanced_brackets) == 0); |
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ASSERT(slre_match("(", "fooklmn", 7, NULL, &msg) == 0); |
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ASSERT(strcmp(msg, static_error_unbalanced_brackets) == 0); |
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ASSERT(slre_match("klz?mn", "fooklmn", 7, NULL, &msg) == 7); |
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ASSERT(slre_match("fa?b", "fooklmn", 7, NULL, &msg) == 0); |
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/* Brackets & capturing */ |
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ASSERT(slre_match("^(te)", "tenacity subdues all", 20, caps, &msg) == 2); |
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ASSERT(slre_match("(bc)", "abcdef", 6, caps, &msg) == 3); |
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ASSERT(slre_match(".(d.)", "abcdef", 6, caps, &msg) == 5); |
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ASSERT(slre_match(".(d.)\\)?", "abcdef", 6, caps, &msg) == 5); |
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ASSERT(caps[0].len == 2); |
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ASSERT(memcmp(caps[0].ptr, "de", 2) == 0); |
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ASSERT(slre_match("(.+)", "123", 3, caps, &msg) == 3); |
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ASSERT(slre_match("(2.+)", "123", 3, caps, &msg) == 3); |
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ASSERT(caps[0].len == 2); |
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ASSERT(memcmp(caps[0].ptr, "23", 2) == 0); |
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ASSERT(slre_match("(.+2)", "123", 3, caps, &msg) == 2); |
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ASSERT(caps[0].len == 2); |
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ASSERT(memcmp(caps[0].ptr, "12", 2) == 0); |
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ASSERT(slre_match("(.*(2.))", "123", 3, caps, &msg) == 3); |
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ASSERT(slre_match("(.)(.)", "123", 3, caps, &msg) == 2); |
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ASSERT(slre_match("(\\d+)\\s+(\\S+)", "12 hi", 5, caps, &msg) == 5); |
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/* Greedy vs non-greedy */ |
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ASSERT(slre_match(".+c", "abcabc", 6, NULL, &msg) == 6); |
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ASSERT(slre_match(".+?c", "abcabc", 6, NULL, &msg) == 3); |
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ASSERT(slre_match(".*?c", "abcabc", 6, NULL, &msg) == 3); |
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ASSERT(slre_match(".*c", "abcabc", 6, NULL, &msg) == 6); |
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ASSERT(slre_match("bc.d?k?b+", "abcabc", 6, NULL, &msg) == 5); |
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/* Branching */ |
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ASSERT(slre_match("|", "abc", 3, NULL, &msg) == 0); |
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ASSERT(slre_match("|.", "abc", 3, NULL, &msg) == 1); |
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ASSERT(slre_match("x|y|b", "abc", 3, NULL, &msg) == 2); |
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ASSERT(slre_match("k(xx|yy)|ca", "abcabc", 6, NULL, &msg) == 4); |
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ASSERT(slre_match("k(xx|yy)|ca|bc", "abcabc", 6, NULL, &msg) == 3); |
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ASSERT(slre_match("(|.c)", "abc", 3, caps, &msg) == 3); |
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ASSERT(caps[0].len == 2); |
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ASSERT(memcmp(caps[0].ptr, "bc", 2) == 0); |
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/* HTTP request */ |
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ASSERT(slre_match("(\\S+)\\s+(\\S+)\\s+HTTP/(\\d)", |
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"POST /x HTTP/1.1", 16, caps, &msg) == 14); |
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{ |
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static const char *req = "POST /x HTTP/1.0\r\n\r\nPOST DATA"; |
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int len = strlen(req); |
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ASSERT(slre_match("((\\S+)\\s+(\\S+)\\s+HTTP/(\\d)\\.(\\d)\r\n\r\n(.*))", |
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req, len, caps, &msg) == len); |
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} |
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/* Examples */ |
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{ |
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const char *error_msg, *request = " GET /index.html HTTP/1.0\r\n\r\n"; |
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struct slre_cap caps[4]; |
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if (slre_match("^\\s*(\\S+)\\s+(\\S+)\\s+HTTP/(\\d)\\.(\\d)", |
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request, strlen(request), caps, &error_msg)) { |
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printf("Method: [%.*s], URI: [%.*s]\n", |
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caps[0].len, caps[0].ptr, |
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caps[1].len, caps[1].ptr); |
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} else { |
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printf("Error parsing [%s]: [%s]\n", request, error_msg); |
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} |
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} |
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printf("Unit test %s (total test: %d, failed tests: %d)\n", |
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static_failed_tests > 0 ? "FAILED" : "PASSED", |
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static_total_tests, static_failed_tests); |
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return EXIT_SUCCESS; |
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} |
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