mirror of
https://github.com/fluencelabs/wasmer
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44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
/*
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* Copyright 2016 The Emscripten Authors. All rights reserved.
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* Emscripten is available under two separate licenses, the MIT license and the
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* University of Illinois/NCSA Open Source License. Both these licenses can be
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* found in the LICENSE file.
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*/
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// This is from// http://pic.dhe.ibm.com/infocenter/iseries/v7r1m0/index.jsp?topic=%2Frtref%2Fregexec.htm
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#include <regex.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main(void) {
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regex_t preg;
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const char *string = "a very simple simple simple string";
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const char *pattern = "\\(sim[a-z]le\\) \\1";
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int rc;
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size_t nmatch = 2;
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regmatch_t pmatch[2];
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if (0 != (rc = regcomp(&preg, pattern, 0))) {
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printf("regcomp() failed, returning nonzero (%d)\n", rc);
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exit(EXIT_FAILURE);
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}
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if (0 != (rc = regexec(&preg, string, nmatch, pmatch, 0))) {
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printf("Failed to match '%s' with '%s',returning %d.\n", string, pattern,
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rc);
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} else {
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printf(
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"With the whole expression, "
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"a matched substring \"%.*s\" is found at position %d to %d.\n",
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pmatch[0].rm_eo - pmatch[0].rm_so, &string[pmatch[0].rm_so],
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pmatch[0].rm_so, pmatch[0].rm_eo - 1);
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printf(
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"With the sub-expression, "
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"a matched substring \"%.*s\" is found at position %d to %d.\n",
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pmatch[1].rm_eo - pmatch[1].rm_so, &string[pmatch[1].rm_so],
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pmatch[1].rm_so, pmatch[1].rm_eo - 1);
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}
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regfree(&preg);
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return 0;
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}
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