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  1. <html>
  2. <head>
  3. <title>pcre2_substring_get_bynumber specification</title>
  4. </head>
  5. <body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
  6. <h1>pcre2_substring_get_bynumber man page</h1>
  7. <p>
  8. Return to the <a href="index.html">PCRE2 index page</a>.
  9. </p>
  10. <p>
  11. This page is part of the PCRE2 HTML documentation. It was generated
  12. automatically from the original man page. If there is any nonsense in it,
  13. please consult the man page, in case the conversion went wrong.
  14. <br>
  15. <br><b>
  16. SYNOPSIS
  17. </b><br>
  18. <P>
  19. <b>#include &#60;pcre2.h&#62;</b>
  20. </P>
  21. <P>
  22. <b>int pcre2_substring_get_bynumber(pcre2_match_data *<i>match_data</i>,</b>
  23. <b> uint32_t <i>number</i>, PCRE2_UCHAR **<i>bufferptr</i>, PCRE2_SIZE *<i>bufflen</i>);</b>
  24. </P>
  25. <br><b>
  26. DESCRIPTION
  27. </b><br>
  28. <P>
  29. This is a convenience function for extracting a captured substring by number
  30. into newly acquired memory. The arguments are:
  31. <pre>
  32. <i>match_data</i> The match data for the match
  33. <i>number</i> Number of the required substring
  34. <i>bufferptr</i> Where to put the string pointer
  35. <i>bufflen</i> Where to put the string length
  36. </pre>
  37. The memory in which the substring is placed is obtained by calling the same
  38. memory allocation function that was used for the match data block. The
  39. convenience function <b>pcre2_substring_free()</b> can be used to free it when
  40. it is no longer needed. The yield of the function is zero for success or one of
  41. the following error numbers:
  42. <pre>
  43. PCRE2_ERROR_NOSUBSTRING there are no groups of that number
  44. PCRE2_ERROR_UNAVAILBLE the ovector was too small for that group
  45. PCRE2_ERROR_UNSET the group did not participate in the match
  46. PCRE2_ERROR_NOMEMORY memory could not be obtained
  47. </PRE>
  48. </P>
  49. <P>
  50. There is a complete description of the PCRE2 native API in the
  51. <a href="pcre2api.html"><b>pcre2api</b></a>
  52. page and a description of the POSIX API in the
  53. <a href="pcre2posix.html"><b>pcre2posix</b></a>
  54. page.
  55. <p>
  56. Return to the <a href="index.html">PCRE2 index page</a>.
  57. </p>