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author | ph10 <ph10@6239d852-aaf2-0410-a92c-79f79f948069> | 2014-10-21 16:33:30 +0000 |
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committer | ph10 <ph10@6239d852-aaf2-0410-a92c-79f79f948069> | 2014-10-21 16:33:30 +0000 |
commit | 65f57acf6b8b2a5eb96890ffa6e68eccd0142192 (patch) | |
tree | 35e45e12236fb7b4de30d6f44365139eb39f4cc9 /doc/pcre2_substring_list_get.3 | |
parent | b0d8dbd60fdbfcee7aac8cf5f8fc0fbb46376734 (diff) | |
download | pcre2-65f57acf6b8b2a5eb96890ffa6e68eccd0142192.tar.gz |
A lot more documentation.
git-svn-id: svn://vcs.exim.org/pcre2/code/trunk@121 6239d852-aaf2-0410-a92c-79f79f948069
Diffstat (limited to 'doc/pcre2_substring_list_get.3')
-rw-r--r-- | doc/pcre2_substring_list_get.3 | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/doc/pcre2_substring_list_get.3 b/doc/pcre2_substring_list_get.3 new file mode 100644 index 0000000..bdc400e --- /dev/null +++ b/doc/pcre2_substring_list_get.3 @@ -0,0 +1,44 @@ +.TH PCRE2_SUBSTRING_LIST_GET 3 "21 October 2014" "PCRE2 10.00" +.SH NAME +PCRE2 - Perl-compatible regular expressions (revised API) +.SH SYNOPSIS +.rs +.sp +.B #include <pcre2.h> +.PP +.nf +.B int pcre2_substring_list_get(pcre2_match_data *\fImatch_data\fP, +.B " PCRE2_UCHAR ***\fIlistptr\fP, PCRE2_SIZE **\fIlengthsptr\fP); +.fi +. +.SH DESCRIPTION +.rs +.sp +This is a convenience function for extracting all the captured substrings after +a pattern match. It builds a list of pointers to the strings, and (optionally) +a second list that contains their lengths (in code units), excluding a +terminating zero that is added to each of them. All this is done in a single +block of memory that is obtained using the same memory allocation function that +was used to get the match data block. The convenience function +\fBpcre2_substring_list_free()\fP can be used to free it when it is no longer +needed. The arguments are: +.sp + \fImatch_data\fP The match data block + \fIlistptr\fP Where to put a pointer to the list + \fIlengthsptr\fP Where to put a pointer to the lengths, or NULL +.sp +A pointer to a list of pointers is put in the variable whose address is in +\fIlistptr\fP. The list is terminated by a NULL pointer. If \fIlengthsptr\fP is +not NULL, a matching list of lengths is created, and its address is placed in +\fIlengthsptr\fP. The yield of the function is zero on success or +PCRE2_ERROR_NOMEMORY if sufficient memory could not be obtained. +.P +There is a complete description of the PCRE2 native API in the +.\" HREF +\fBpcre2api\fP +.\" +page and a description of the POSIX API in the +.\" HREF +\fBpcre2posix\fP +.\" +page. |