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1.1 misha 1: /** @file
2: Parser: @b regex class decls.
3:
4: Copyright (c) 2001-2009 ArtLebedev Group (http://www.artlebedev.com)
5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
6: */
7:
8: #ifndef PA_VREGEX_H
9: #define PA_VREGEX_H
10:
1.5 ! misha 11: static const char * const IDENT_VREGEX_H="$Date: 2009-05-13 07:35:27 $";
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: #include "pcre.h"
20:
21: // defines
22:
23: #define VREGEX_TYPE "regex"
24:
25: enum Match_feature {
26: MF_GLOBAL_SEARCH = 0x01,
27: MF_NEED_PRE_POST_MATCH = 0x02,
28: MF_JUST_COUNT_MATCHES = 0x04
29: };
30:
31: extern Methoded* regex_class;
32:
33: // VRegex
34: class VRegex: public VStateless_object {
35:
36: public: // Value
37:
38: override const char* type() const { return VREGEX_TYPE; }
39: override VStateless_class *get_class() { return regex_class; }
40:
1.2 misha 41: /// VRegex: count
42: override int as_int() { return get_info_size(); }
43:
44: /// VRegex: count
45: override double as_double() { return as_int(); }
1.1 misha 46:
47: /// VRegex: true
48: override bool is_evaluated_expr() const { return true; }
49:
50: /// VRegex: scalar
51: override Value& as_expr_result(bool/*return_string_as_is=false*/);
52:
53: /// VRegex: true
1.2 misha 54: virtual bool is_defined() const { return as_bool(); }
1.1 misha 55:
56: /// VRegex: true
57: override bool as_bool() const { return true; }
58:
1.5 ! misha 59: override Value* get_element(const String& aname);
! 60:
1.1 misha 61: public: // usage
62:
63: VRegex():
1.3 misha 64: fcharset(0),
65: fpattern(0),
1.5 ! misha 66: foptions_cstr(0),
1.3 misha 67: fcode(0),
68: fextra(0),
69: fstudied(false)
70: {
71: foptions[0]=0;
72: foptions[1]=0;
73: }
1.1 misha 74:
75: VRegex(Charset& acharset, const String* aregex, const String* aoptions):
1.3 misha 76: fextra(0),
1.1 misha 77: fstudied(false)
78: {
79: set(acharset, aregex, aoptions);
80: compile();
81: }
82:
83: ~VRegex(){
84: if(fextra)
85: pcre_free(fextra);
86: if(fcode)
87: pcre_free(fcode);
88: }
89:
90: void set(Charset& acharset, const String* aregex, const String* aoptions);
91:
92: void compile();
93:
94: void study();
95:
96: int exec(const char* string, size_t string_len, int* ovector, int ovector_size, int prestart=0);
97:
98: // size_t info();
99:
100: size_t full_info(int type);
101:
102: size_t get_info_size();
103:
104: size_t get_study_size();
105:
106: size_t get_options();
107:
108: bool is_pre_post_match_needed(){
109: return (foptions[1] & MF_NEED_PRE_POST_MATCH)!=0;
110: }
111:
112: bool is_just_count(){
113: return (foptions[1] & MF_JUST_COUNT_MATCHES)!=0;
114: }
115:
116: bool is_global_search(){
117: return (foptions[1] & MF_GLOBAL_SEARCH)!=0;
118: }
119:
120: private:
121: static void regex_options(const String* options, int* result);
122:
123: private:
124: Charset* fcharset;
125: const char* fpattern;
1.5 ! misha 126: const char* foptions_cstr;
1.1 misha 127: int foptions[2];
128:
129: pcre* fcode;
130: pcre_extra* fextra;
131: bool fstudied;
132: };
133:
1.2 misha 134:
135: class VRegexCleaner {
136: public:
137: VRegex *vregex;
138:
139: VRegexCleaner(): vregex(0) { }
140:
141: ~VRegexCleaner(){
142: if(vregex) delete vregex;
143: }
144:
145: };
146:
1.1 misha 147:
148: #endif