Annotation of parser3/src/types/pa_vregex.h, revision 1.20
1.1 misha 1: /** @file
2: Parser: @b regex class decls.
3:
1.19 moko 4: Copyright (c) 2001-2026 Art. Lebedev Studio (https://www.artlebedev.com)
1.15 moko 5: Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru>
1.1 misha 6: */
7:
8: #ifndef PA_VREGEX_H
9: #define PA_VREGEX_H
10:
1.20 ! moko 11: #define IDENT_PA_VREGEX_H "$Id: pa_vregex.h,v 1.19 2026/04/25 13:38:46 moko Exp $"
1.1 misha 12:
13: // include
14:
15: #include "classes.h"
16: #include "pa_common.h"
17: #include "pa_vstateless_object.h"
18: #include "pa_charset.h"
19:
20: // defines
21:
22: #define VREGEX_TYPE "regex"
23:
24: enum Match_feature {
25: MF_GLOBAL_SEARCH = 0x01,
26: MF_NEED_PRE_POST_MATCH = 0x02,
27: MF_JUST_COUNT_MATCHES = 0x04
28: };
29:
30: extern Methoded* regex_class;
31:
1.20 ! moko 32: #ifdef HAVE_PCRE2
! 33: /// compiled patterns are reused: in a loop, by the other threads and by the next httpd requests
! 34: #define REGEX_CACHE
! 35: #endif
! 36:
1.1 misha 37: // VRegex
38: class VRegex: public VStateless_object {
39:
40: public: // Value
41:
42: override const char* type() const { return VREGEX_TYPE; }
43: override VStateless_class *get_class() { return regex_class; }
44:
1.18 moko 45: /// VRegex: PCRE_INFO_SIZE
1.13 moko 46: override int as_int() { return (int)get_info_size(); }
1.2 misha 47:
1.18 moko 48: /// VRegex: PCRE_INFO_SIZE
49: override double as_double() { return (double)get_info_size(); }
1.1 misha 50:
51: /// VRegex: scalar
1.7 moko 52: override Value& as_expr_result();
1.1 misha 53:
54: /// VRegex: true
1.8 misha 55: virtual bool is_defined() const { return true; }
1.1 misha 56:
57: /// VRegex: true
58: override bool as_bool() const { return true; }
59:
1.5 misha 60: override Value* get_element(const String& aname);
61:
1.1 misha 62: public: // usage
63:
1.16 moko 64: #ifdef HAVE_PCRE2
65: static pcre2_general_context* fgen_ctxt;
66: #endif
67:
1.1 misha 68: VRegex():
1.3 misha 69: fcharset(0),
70: fpattern(0),
1.5 misha 71: foptions_cstr(0),
1.3 misha 72: fcode(0),
1.16 moko 73: #ifdef HAVE_PCRE2
74: fcmp_ctxt(0),
75: fmatch_ctxt(0),
76: fmatch_data(0)
77: #else
1.3 misha 78: fextra(0),
79: fstudied(false)
1.16 moko 80: #endif
1.3 misha 81: {
82: foptions[0]=0;
83: foptions[1]=0;
84: }
1.1 misha 85:
86: VRegex(Charset& acharset, const String* aregex, const String* aoptions):
1.16 moko 87: #ifdef HAVE_PCRE2
88: fcmp_ctxt(0),
89: fmatch_ctxt(0),
90: fmatch_data(0)
91: #else
1.3 misha 92: fextra(0),
1.1 misha 93: fstudied(false)
1.16 moko 94: #endif
1.1 misha 95: {
96: set(acharset, aregex, aoptions);
97: compile();
98: }
99:
100: ~VRegex(){
1.16 moko 101: #ifdef HAVE_PCRE2
102: pcre2_match_data_free(fmatch_data);
103: pcre2_match_context_free(fmatch_ctxt);
104: pcre2_compile_context_free(fcmp_ctxt);
1.20 ! moko 105: #ifndef REGEX_CACHE
! 106: pcre2_code_free(fcode); // the cache owns it otherwise
! 107: #endif
1.16 moko 108: #else
1.1 misha 109: if(fextra)
110: pcre_free(fextra);
111: if(fcode)
112: pcre_free(fcode);
1.16 moko 113: #endif
1.1 misha 114: }
115:
116: void set(Charset& acharset, const String* aregex, const String* aoptions);
1.12 moko 117: void set(VRegex& avregex);
1.1 misha 118:
119: void compile();
120:
121: void study();
122:
123: int exec(const char* string, size_t string_len, int* ovector, int ovector_size, int prestart=0);
124:
125: // size_t info();
126:
127: size_t full_info(int type);
128:
129: size_t get_info_size();
130:
131: size_t get_study_size();
132:
133: size_t get_options();
134:
135: bool is_pre_post_match_needed(){
136: return (foptions[1] & MF_NEED_PRE_POST_MATCH)!=0;
137: }
138:
139: bool is_just_count(){
140: return (foptions[1] & MF_JUST_COUNT_MATCHES)!=0;
141: }
142:
143: bool is_global_search(){
144: return (foptions[1] & MF_GLOBAL_SEARCH)!=0;
145: }
146:
147: private:
148: static void regex_options(const String* options, int* result);
149:
150: private:
151: Charset* fcharset;
152: const char* fpattern;
1.5 misha 153: const char* foptions_cstr;
1.1 misha 154: int foptions[2];
155:
1.16 moko 156: #ifdef HAVE_PCRE2
157: pcre2_code* fcode;
158: pcre2_compile_context* fcmp_ctxt;
159: pcre2_match_context* fmatch_ctxt;
160: pcre2_match_data* fmatch_data;
161: #else
1.1 misha 162: pcre* fcode;
163: pcre_extra* fextra;
164: bool fstudied;
1.16 moko 165: #endif
1.1 misha 166: };
167:
1.2 misha 168:
169: class VRegexCleaner {
170: public:
171: VRegex *vregex;
172:
173: VRegexCleaner(): vregex(0) { }
174:
175: ~VRegexCleaner(){
176: if(vregex) delete vregex;
177: }
178:
179: };
180:
1.1 misha 181:
182: #endif
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