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Updated slre_match() signature

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Sergey Lyubka 2013-08-07 13:30:02 +01:00
parent 43c80386e0
commit 01e046e331
1 changed files with 3 additions and 6 deletions
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README.md
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@ -7,8 +7,7 @@ expression syntax. Main features of SLRE are:
* Written in strict ANSI C'89 * Written in strict ANSI C'89
* Small size (compiled x86 code is about 5kB) * Small size (compiled x86 code is about 5kB)
* Uses little stack and does no dynamic memory allocation * Uses little stack and does no dynamic memory allocation
* Provides [intuitive simple * Provides simple intuitive API
API](https://github.com/cesanta/slre/blob/master/slre.h)
* Implements most useful subset of Perl regex syntax (see below) * Implements most useful subset of Perl regex syntax (see below)
* Easily extensible. E.g. if one wants to introduce a new * Easily extensible. E.g. if one wants to introduce a new
metacharacter `\i`, meaning "IPv4 address", it is easy to do so with SLRE. metacharacter `\i`, meaning "IPv4 address", it is easy to do so with SLRE.
@ -41,8 +40,7 @@ most.
## API ## API
int slre_match(const char *regexp, const char *buf, int buf_len, int slre_match(const char *regexp, const char *buf, int buf_len,
struct slre_cap *caps, const char **error_msg); struct slre_cap *caps, int num_caps, const char **error_msg);
`slre_match()` matches string buffer `buf` of length `buf_len` against `slre_match()` matches string buffer `buf` of length `buf_len` against
regular expression `regexp`, which should conform the syntax outlined regular expression `regexp`, which should conform the syntax outlined
@ -60,8 +58,7 @@ N-th member of the `caps` array will contain fragment that corresponds
to the N-th opening bracket in the `regex`. to the N-th opening bracket in the `regex`.
`slre_match()` returns 0 if there is no match found. Otherwise, it returns `slre_match()` returns 0 if there is no match found. Otherwise, it returns
the number scanned bytes from the beginning of the string. This way, the number scanned bytes from the beginning of the string.
it is easy to do repetitive matches.
## Example: parsing HTTP request line ## Example: parsing HTTP request line