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Contents of /code/trunk/doc/pcre_compile.3

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Revision 155 - (show annotations)
Tue Apr 24 13:36:11 2007 UTC (14 years ago) by ph10
File size: 2734 byte(s)
Tidies and final updates for 7.1.
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_CASELESS Do caseless matching
36 PCRE_DOLLAR_ENDONLY $ not to match newline at end
37 PCRE_DOTALL . matches anything including NL
38 PCRE_DUPNAMES Allow duplicate names for subpatterns
39 PCRE_EXTENDED Ignore whitespace and # comments
40 PCRE_EXTRA PCRE extra features
41 (not much use currently)
42 PCRE_FIRSTLINE Force matching to be before newline
43 PCRE_MULTILINE ^ and $ match newlines within data
44 PCRE_NEWLINE_ANY Recognize any Unicode newline sequence
45 PCRE_NEWLINE_ANYCRLF Recognize CR, LF, and CRLF as newline sequences
46 PCRE_NEWLINE_CR Set CR as the newline sequence
47 PCRE_NEWLINE_CRLF Set CRLF as the newline sequence
48 PCRE_NEWLINE_LF Set LF as the newline sequence
49 PCRE_NO_AUTO_CAPTURE Disable numbered capturing paren-
50 theses (named ones available)
51 PCRE_UNGREEDY Invert greediness of quantifiers
52 PCRE_UTF8 Run in UTF-8 mode
53 PCRE_NO_UTF8_CHECK Do not check the pattern for UTF-8
54 validity (only relevant if
55 PCRE_UTF8 is set)
56 .sp
57 PCRE must be built with UTF-8 support in order to use PCRE_UTF8 and
59 .P
60 The yield of the function is a pointer to a private data structure that
61 contains the compiled pattern, or NULL if an error was detected. Note that
62 compiling regular expressions with one version of PCRE for use with a different
63 version is not guaranteed to work and may cause crashes.
64 .P
65 There is a complete description of the PCRE native API in the
66 .\" HREF
67 \fBpcreapi\fR
68 .\"
69 page and a description of the POSIX API in the
70 .\" HREF
71 \fBpcreposix\fR
72 .\"
73 page.


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