54 lines
2.0 KiB
Groff
54 lines
2.0 KiB
Groff
.TH PCRE2_SERIALIZE_DECODE 3 "27 June 2018" "PCRE2 10.32"
|
|
.SH NAME
|
|
PCRE2 - Perl-compatible regular expressions (revised API)
|
|
.SH SYNOPSIS
|
|
.rs
|
|
.sp
|
|
.B #include <pcre2.h>
|
|
.PP
|
|
.nf
|
|
.B int32_t pcre2_serialize_decode(pcre2_code **\fIcodes\fP,
|
|
.B " int32_t \fInumber_of_codes\fP, const uint8_t *\fIbytes\fP,"
|
|
.B " pcre2_general_context *\fIgcontext\fP);"
|
|
.fi
|
|
.
|
|
.SH DESCRIPTION
|
|
.rs
|
|
.sp
|
|
This function decodes a serialized set of compiled patterns back into a list of
|
|
individual patterns. This is possible only on a host that is running the same
|
|
version of PCRE2, with the same code unit width, and the host must also have
|
|
the same endianness, pointer width and PCRE2_SIZE type. The arguments for
|
|
\fBpcre2_serialize_decode()\fP are:
|
|
.sp
|
|
\fIcodes\fP pointer to a vector in which to build the list
|
|
\fInumber_of_codes\fP number of slots in the vector
|
|
\fIbytes\fP the serialized byte stream
|
|
\fIgcontext\fP pointer to a general context or NULL
|
|
.sp
|
|
The \fIbytes\fP argument must point to a block of data that was originally
|
|
created by \fBpcre2_serialize_encode()\fP, though it may have been saved on
|
|
disc or elsewhere in the meantime. If there are more codes in the serialized
|
|
data than slots in the list, only those compiled patterns that will fit are
|
|
decoded. The yield of the function is the number of decoded patterns, or one of
|
|
the following negative error codes:
|
|
.sp
|
|
PCRE2_ERROR_BADDATA \fInumber_of_codes\fP is zero or less
|
|
PCRE2_ERROR_BADMAGIC mismatch of id bytes in \fIbytes\fP
|
|
PCRE2_ERROR_BADMODE mismatch of variable unit size or PCRE version
|
|
PCRE2_ERROR_MEMORY memory allocation failed
|
|
PCRE2_ERROR_NULL \fIcodes\fP or \fIbytes\fP is NULL
|
|
.sp
|
|
PCRE2_ERROR_BADMAGIC may mean that the data is corrupt, or that it was compiled
|
|
on a system with different endianness.
|
|
.P
|
|
There is a complete description of the PCRE2 native API in the
|
|
.\" HREF
|
|
\fBpcre2api\fP
|
|
.\"
|
|
page and a description of the serialization functions in the
|
|
.\" HREF
|
|
\fBpcre2serialize\fP
|
|
.\"
|
|
page.
|