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Contents of /code/tags/pcre-7.4/doc/pcre_compile.3

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Revision 262 - (show annotations)
Fri Sep 21 08:41:43 2007 UTC (13 years, 8 months ago) by ph10
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Tag 7.4
3 PCRE - Perl-compatible regular expressions
5 .rs
6 .sp
7 .B #include <pcre.h>
8 .PP
9 .SM
10 .B pcre *pcre_compile(const char *\fIpattern\fP, int \fIoptions\fP,
11 .ti +5n
12 .B const char **\fIerrptr\fP, int *\fIerroffset\fP,
13 .ti +5n
14 .B const unsigned char *\fItableptr\fP);
15 .
17 .rs
18 .sp
19 This function compiles a regular expression into an internal form. It is the
20 same as \fBpcre_compile2()\fP, except for the absence of the \fIerrorcodeptr\fP
21 argument. Its arguments are:
22 .sp
23 \fIpattern\fR A zero-terminated string containing the
24 regular expression to be compiled
25 \fIoptions\fR Zero or more option bits
26 \fIerrptr\fR Where to put an error message
27 \fIerroffset\fR Offset in pattern where error was found
28 \fItableptr\fR Pointer to character tables, or NULL to
29 use the built-in default
30 .sp
31 The option bits are:
32 .sp
33 PCRE_ANCHORED Force pattern anchoring
34 PCRE_AUTO_CALLOUT Compile automatic callouts
35 PCRE_BSR_ANYCRLF \eR matches only CR, LF, or CRLF
36 PCRE_BSR_UNICODE \eR matches all Unicode line endings
37 PCRE_CASELESS Do caseless matching
38 PCRE_DOLLAR_ENDONLY $ not to match newline at end
39 PCRE_DOTALL . matches anything including NL
40 PCRE_DUPNAMES Allow duplicate names for subpatterns
41 PCRE_EXTENDED Ignore whitespace and # comments
42 PCRE_EXTRA PCRE extra features
43 (not much use currently)
44 PCRE_FIRSTLINE Force matching to be before newline
45 PCRE_MULTILINE ^ and $ match newlines within data
46 PCRE_NEWLINE_ANY Recognize any Unicode newline sequence
47 PCRE_NEWLINE_ANYCRLF Recognize CR, LF, and CRLF as newline sequences
48 PCRE_NEWLINE_CR Set CR as the newline sequence
49 PCRE_NEWLINE_CRLF Set CRLF as the newline sequence
50 PCRE_NEWLINE_LF Set LF as the newline sequence
51 PCRE_NO_AUTO_CAPTURE Disable numbered capturing paren-
52 theses (named ones available)
53 PCRE_UNGREEDY Invert greediness of quantifiers
54 PCRE_UTF8 Run in UTF-8 mode
55 PCRE_NO_UTF8_CHECK Do not check the pattern for UTF-8
56 validity (only relevant if
57 PCRE_UTF8 is set)
58 .sp
59 PCRE must be built with UTF-8 support in order to use PCRE_UTF8 and
61 .P
62 The yield of the function is a pointer to a private data structure that
63 contains the compiled pattern, or NULL if an error was detected. Note that
64 compiling regular expressions with one version of PCRE for use with a different
65 version is not guaranteed to work and may cause crashes.
66 .P
67 There is a complete description of the PCRE native API in the
68 .\" HREF
69 \fBpcreapi\fR
70 .\"
71 page and a description of the POSIX API in the
72 .\" HREF
73 \fBpcreposix\fR
74 .\"
75 page.


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