USING: accessors alien alien.accessors alien.c-types alien.data
alien.enums alien.strings arrays assocs fry io.encodings.string
-io.encodings.utf8 kernel math math.bitwise mirrors pcre.ffi
-sequences sequences.generalizations splitting strings ;
+io.encodings.utf8 kernel literals math math.bitwise mirrors
+pcre.ffi sequences sequences.generalizations splitting strings ;
QUALIFIED: regexp
IN: pcre
+ERROR: malformed-regexp expr error ;
+
+ERROR: pcre-error value ;
+
<PRIVATE
+: replace-all ( seq subseqs new -- seq )
+ swapd '[ _ replace ] reduce ;
+
+: split-subseqs ( seq subseqs -- seqs )
+ dup first [ replace-all ] keep split-subseq [ >string ] map harvest ;
+
: 2with ( param1 param2 obj quot -- obj curry )
[ -rot ] dip [ [ rot ] dip call ] 3curry ; inline
1 + 2dup swap ?nth
[ utf8-start-byte? [ nip ] [ next-utf8-char ] if ] [ 2drop f ] if* ;
+: config ( what -- alien )
+ { int } [ pcre_config ] with-out-parameters ;
+
: fullinfo ( pcre extra what -- obj )
{ int } [ pcre_fullinfo ] with-out-parameters nip ;
[ <alien> 1 alien-unsigned-1 ]
[ 2 + <alien> utf8 alien>string ] bi ;
-: options ( pcre -- opts )
+: options ( pcre -- opts )
f PCRE_INFO_OPTIONS fullinfo ;
: name-table-entries ( pcre extra -- addrs )
[ name-table ] [ name-entry-size ] [ name-count ] 2tri
gen-array-addrs [ name-table-entry 2array ] map ;
-PRIVATE>
-
-ERROR: malformed-regexp expr error ;
-ERROR: pcre-error value ;
-
-TUPLE: compiled-pcre pcre extra nametable ;
-
-: default-opts ( -- opts )
- PCRE_UTF8 PCRE_UCP bitor ;
+CONSTANT: default-opts flags{ PCRE_UTF8 PCRE_UCP }
: (pcre) ( expr -- pcre err-message err-offset )
default-opts { c-string int } [ f pcre_compile ] with-out-parameters ;
: <pcre> ( expr -- pcre )
dup (pcre) 2array swap [ 2nip ] [ malformed-regexp ] if* ;
-: exec ( pcre extra subject ofs opts -- count match-data )
- [ dup length ] 2dip 30 int <c-array> 30 [ pcre_exec ] 2keep drop ;
-
: <pcre-extra> ( pcre -- pcre-extra )
0 { c-string } [ pcre_study ] with-out-parameters drop ;
-: config ( what -- alien )
- { int } [ pcre_config ] with-out-parameters ;
+: exec ( pcre extra subject ofs opts -- count match-data )
+ [ dup length ] 2dip 30 int <c-array> 30 [ pcre_exec ] 2keep drop ;
-! Finding stuff
TUPLE: matcher pcre extra subject ofs exec-opts match ;
: <matcher> ( subject compiled-pcre -- matcher )
[ utf8 encode ] dip [ pcre>> ] [ extra>> ] bi rot 0 0 f matcher boa ;
-! This handling of zero-length matches is taken from pcredemo.c
-: empty-match-opts ( -- opts )
- PCRE_NOTEMPTY_ATSTART PCRE_ANCHORED bitor ;
+CONSTANT: empty-match-opts flags{ PCRE_NOTEMPTY_ATSTART PCRE_ANCHORED }
: findnext ( matcher -- matcher'/f )
clone dup <mirror> values 6 firstn drop exec
] 2bi
] if ;
-! Result parsing
: substring-list ( subject match-array count -- alien )
{ void* } [ pcre_get_substring_list drop ] with-out-parameters ;
swapd first2 swap [ substring-list ] keep void* <c-direct-array>
[ utf8 alien>string ] { } map-as [ of swap 2array ] with map-index ;
-! High-level
+PRIVATE>
+
+TUPLE: compiled-pcre pcre extra nametable ;
+
: <compiled-pcre> ( expr -- compiled-pcre )
<pcre> dup <pcre-extra> 2dup name-table-entries compiled-pcre boa ;
: matches? ( subject obj -- ? )
dupd findall [ nip length 1 = ] [ ?first ?first ?last = ] 2bi and ;
-<PRIVATE
-
-: replace-all ( seq subseqs new -- seq )
- swapd '[ _ replace ] reduce ;
-
-: split-subseqs ( seq subseqs -- seqs )
- dup first [ replace-all ] keep split-subseq [ >string ] map harvest ;
-
-PRIVATE>
-
: split ( subject obj -- strings )
dupd findall [ first second ] map split-subseqs ;