73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
#ifndef PCRE2_CODE_UNIT_WIDTH
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#define PCRE2_CODE_UNIT_WIDTH 8
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <pcre2.h>
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int main(int argc, char **argv)
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{
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pcre2_code *re;
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PCRE2_SPTR pattern; /* PCRE2_SPTR is a pointer to unsigned code units of */
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PCRE2_SPTR subject; /* the appropriate width (in this case, 8 bits). */
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int errnum;
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int i, rc;
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PCRE2_SIZE erroffs;
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PCRE2_SIZE *ovector;
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PCRE2_SIZE subject_length;
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pcre2_match_data *match_data;
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if (argc != 3) {
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printf("Exactly two arguments required: a regex and a subject string\n");
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return 1;
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}
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pattern = (PCRE2_SPTR)argv[1];
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subject = (PCRE2_SPTR)argv[2];
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subject_length = (PCRE2_SIZE)strlen((char *)subject);
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re = pcre2_compile(pattern, PCRE2_ZERO_TERMINATED, PCRE2_UCP, &errnum, &erroffs, NULL);
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if (re == NULL) {
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PCRE2_UCHAR buffer[256];
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pcre2_get_error_message(errnum, buffer, sizeof(buffer));
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printf("PCRE2 compilation failed at offset %d: %s\n", (int)erroffs,
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buffer);
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return 1;
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}
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match_data = pcre2_match_data_create_from_pattern(re, NULL);
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rc = pcre2_match(re, subject, subject_length, 0, 0, match_data, NULL);
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if (rc < 0) {
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switch(rc) {
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case PCRE2_ERROR_NOMATCH:
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printf("No match\n");
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break;
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default:
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printf("Matching error %d\n", rc);
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break;
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}
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pcre2_match_data_free(match_data); /* Release memory used for the match */
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pcre2_code_free(re); /* data and the compiled pattern. */
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return 1;
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}
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ovector = pcre2_get_ovector_pointer(match_data);
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for (i = 0; i < rc; i++)
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printf("%2ld: %.*s\n", ovector[2*i],
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(int)(ovector[2*i+1] - ovector[2*i]),
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subject + ovector[2*i]);
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pcre2_match_data_free(match_data); /* Release the memory that was used */
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pcre2_code_free(re); /* for the match data and the pattern. */
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return 0;
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}
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