github的一些开源项目
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

58 lines
2.0 KiB

  1. <html>
  2. <head>
  3. <title>pcre2_substring_copy_byname specification</title>
  4. </head>
  5. <body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
  6. <h1>pcre2_substring_copy_byname 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_copy_byname(pcre2_match_data *<i>match_data</i>,</b>
  23. <b> PCRE2_SPTR <i>name</i>, PCRE2_UCHAR *<i>buffer</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, identified
  30. by name, into a given buffer. The arguments are:
  31. <pre>
  32. <i>match_data</i> The match data block for the match
  33. <i>name</i> Name of the required substring
  34. <i>buffer</i> Buffer to receive the string
  35. <i>bufflen</i> Length of buffer (code units)
  36. </pre>
  37. The <i>bufflen</i> variable is updated to contain the length of the extracted
  38. string, excluding the trailing zero. The yield of the function is zero for
  39. success or one of the following error numbers:
  40. <pre>
  41. PCRE2_ERROR_NOSUBSTRING there are no groups of that name
  42. PCRE2_ERROR_UNAVAILBLE the ovector was too small for that group
  43. PCRE2_ERROR_UNSET the group did not participate in the match
  44. PCRE2_ERROR_NOMEMORY the buffer is not big enough
  45. </pre>
  46. If there is more than one group with the given name, the first one that is set
  47. is returned. In this situation PCRE2_ERROR_UNSET means that no group with the
  48. given name was set.
  49. </P>
  50. <P>
  51. There is a complete description of the PCRE2 native API in the
  52. <a href="pcre2api.html"><b>pcre2api</b></a>
  53. page and a description of the POSIX API in the
  54. <a href="pcre2posix.html"><b>pcre2posix</b></a>
  55. page.
  56. <p>
  57. Return to the <a href="index.html">PCRE2 index page</a>.
  58. </p>