Commit | Line | Data |
41b16711 |
1 | #if defined(PERL_EXT_RE_DEBUG) && !defined(DEBUGGING) |
2 | # define DEBUGGING |
3 | #endif |
4 | |
c5be433b |
5 | #define PERL_NO_GET_CONTEXT |
56953603 |
6 | #include "EXTERN.h" |
7 | #include "perl.h" |
8 | #include "XSUB.h" |
256ddcd0 |
9 | #include "re_comp.h" |
56953603 |
10 | |
f9f4320a |
11 | |
97f88e98 |
12 | START_EXTERN_C |
13 | |
cea2e8a9 |
14 | extern regexp* my_regcomp (pTHX_ char* exp, char* xend, PMOP* pm); |
3c6f95d1 |
15 | extern regexp* my_re_compile(pTHX_ char *exp, char *xend, PMOP *pm); |
cea2e8a9 |
16 | extern I32 my_regexec (pTHX_ regexp* prog, char* stringarg, char* strend, |
20ce7b12 |
17 | char* strbeg, I32 minend, SV* screamer, |
18 | void* data, U32 flags); |
f8149455 |
19 | |
f722798b |
20 | extern char* my_re_intuit_start (pTHX_ regexp *prog, SV *sv, char *strpos, |
21 | char *strend, U32 flags, |
22 | struct re_scream_pos_data_s *data); |
23 | extern SV* my_re_intuit_string (pTHX_ regexp *prog); |
56953603 |
24 | |
f8149455 |
25 | extern void my_regfree (pTHX_ struct regexp* r); |
a3c0e9ca |
26 | #if defined(USE_ITHREADS) |
f9f4320a |
27 | extern regexp* my_regdupe (pTHX_ const regexp *r, CLONE_PARAMS *param); |
a3c0e9ca |
28 | #endif |
0a28d81c |
29 | |
70685ca0 |
30 | EXTERN_C const struct regexp_engine my_reg_engine; |
31 | |
32 | END_EXTERN_C |
33 | |
34 | const struct regexp_engine my_reg_engine = { |
f9f4320a |
35 | my_regcomp, |
3c6f95d1 |
36 | my_re_compile, |
f9f4320a |
37 | my_regexec, |
38 | my_re_intuit_start, |
39 | my_re_intuit_string, |
40 | my_regfree, |
a3c0e9ca |
41 | #if defined(USE_ITHREADS) |
f9f4320a |
42 | my_regdupe |
a3c0e9ca |
43 | #endif |
0a28d81c |
44 | }; |
45 | |
56953603 |
46 | MODULE = re PACKAGE = re |
47 | |
48 | void |
f9f4320a |
49 | install() |
50 | PPCODE: |
51 | PL_colorset = 0; /* Allow reinspection of ENV. */ |
52 | /* PL_debug |= DEBUG_r_FLAG; */ |
53 | XPUSHs(sv_2mortal(newSViv(PTR2IV(&my_reg_engine)))); |
54 | |
de8c5301 |
55 | |
56 | void |
57 | is_regexp(sv) |
58 | SV * sv |
59 | PROTOTYPE: $ |
60 | PREINIT: |
61 | MAGIC *mg; |
62 | PPCODE: |
63 | { |
64 | if (SvMAGICAL(sv)) |
65 | mg_get(sv); |
66 | if (SvROK(sv) && |
67 | (sv = (SV*)SvRV(sv)) && /* assign deliberate */ |
68 | SvTYPE(sv) == SVt_PVMG && |
69 | (mg = mg_find(sv, PERL_MAGIC_qr))) /* assign deliberate */ |
70 | { |
71 | XSRETURN_YES; |
72 | } else { |
73 | XSRETURN_NO; |
74 | } |
75 | /* NOTREACHED */ |
76 | } |
77 | |
78 | void |
79 | regexp_pattern(sv) |
80 | SV * sv |
81 | PROTOTYPE: $ |
82 | PREINIT: |
83 | MAGIC *mg; |
84 | PPCODE: |
85 | { |
86 | /* |
87 | Checks if a reference is a regex or not. If the parameter is |
88 | not a ref, or is not the result of a qr// then returns false |
89 | in scalar context and an empty list in list context. |
90 | Otherwise in list context it returns the pattern and the |
91 | modifiers, in scalar context it returns the pattern just as it |
92 | would if the qr// was stringified normally, regardless as |
93 | to the class of the variable and any strigification overloads |
94 | on the object. |
95 | */ |
96 | |
97 | if (SvMAGICAL(sv)) |
98 | mg_get(sv); |
99 | if (SvROK(sv) && |
100 | (sv = (SV*)SvRV(sv)) && /* assign deliberate */ |
101 | SvTYPE(sv) == SVt_PVMG && |
102 | (mg = mg_find(sv, PERL_MAGIC_qr))) /* assign deliberate */ |
103 | { |
104 | |
105 | /* Housten, we have a regex! */ |
106 | SV *pattern; |
107 | regexp *re = (regexp *)mg->mg_obj; |
108 | STRLEN patlen = 0; |
109 | STRLEN left = 0; |
110 | char reflags[6]; |
111 | |
112 | if ( GIMME_V == G_ARRAY ) { |
113 | /* |
114 | we are in list context so stringify |
115 | the modifiers that apply. We ignore "negative |
116 | modifiers" in this scenario. |
117 | */ |
118 | |
119 | char *fptr = "msix"; |
120 | char ch; |
bbe252da |
121 | U16 match_flags = (U16)((re->extflags & PMf_COMPILETIME) >> 12); |
de8c5301 |
122 | |
123 | while((ch = *fptr++)) { |
bbe252da |
124 | if(match_flags & 1) { |
de8c5301 |
125 | reflags[left++] = ch; |
126 | } |
bbe252da |
127 | match_flags >>= 1; |
de8c5301 |
128 | } |
129 | |
130 | pattern = sv_2mortal(newSVpvn(re->precomp,re->prelen)); |
bbe252da |
131 | if (re->extflags & RXf_UTF8) SvUTF8_on(pattern); |
de8c5301 |
132 | |
133 | /* return the pattern and the modifiers */ |
134 | XPUSHs(pattern); |
135 | XPUSHs(sv_2mortal(newSVpvn(reflags,left))); |
136 | XSRETURN(2); |
137 | } else { |
138 | /* Scalar, so use the string that Perl would return */ |
139 | if (!mg->mg_ptr) |
140 | CALLREG_STRINGIFY(mg,0,0); |
141 | |
142 | /* return the pattern in (?msix:..) format */ |
143 | pattern = sv_2mortal(newSVpvn(mg->mg_ptr,mg->mg_len)); |
bbe252da |
144 | if (re->extflags & RXf_UTF8) |
de8c5301 |
145 | SvUTF8_on(pattern); |
146 | XPUSHs(pattern); |
147 | XSRETURN(1); |
148 | } |
149 | } else { |
150 | /* It ain't a regexp folks */ |
151 | if ( GIMME_V == G_ARRAY ) { |
152 | /* return the empty list */ |
153 | XSRETURN_UNDEF; |
154 | } else { |
155 | /* Because of the (?:..) wrapping involved in a |
156 | stringified pattern it is impossible to get a |
157 | result for a real regexp that would evaluate to |
158 | false. Therefore we can return PL_sv_no to signify |
159 | that the object is not a regex, this means that one |
160 | can say |
161 | |
162 | if (regex($might_be_a_regex) eq '(?:foo)') { } |
163 | |
164 | and not worry about undefined values. |
165 | */ |
166 | XSRETURN_NO; |
167 | } |
168 | } |
169 | /* NOT-REACHED */ |
256ddcd0 |
170 | } |
171 | |
172 | |
173 | void |
174 | regmust(sv) |
175 | SV * sv |
176 | PROTOTYPE: $ |
177 | PREINIT: |
178 | MAGIC *mg; |
179 | PPCODE: |
180 | { |
181 | if (SvMAGICAL(sv)) |
182 | mg_get(sv); |
183 | if (SvROK(sv) && |
184 | (sv = (SV*)SvRV(sv)) && /* assign deliberate */ |
185 | SvTYPE(sv) == SVt_PVMG && |
186 | (mg = mg_find(sv, PERL_MAGIC_qr))) /* assign deliberate */ |
187 | { |
188 | SV *an = &PL_sv_no; |
189 | SV *fl = &PL_sv_no; |
190 | regexp *re = (regexp *)mg->mg_obj; |
191 | if (re->anchored_substr) { |
192 | an = newSVsv(re->anchored_substr); |
193 | } else if (re->anchored_utf8) { |
194 | an = newSVsv(re->anchored_utf8); |
195 | } |
196 | if (re->float_substr) { |
197 | fl = newSVsv(re->float_substr); |
198 | } else if (re->float_utf8) { |
199 | fl = newSVsv(re->float_utf8); |
200 | } |
201 | XPUSHs(an); |
202 | XPUSHs(fl); |
203 | XSRETURN(2); |
204 | } |
205 | XSRETURN_UNDEF; |
206 | } |