| Geant4 Cross Reference |
1 // 1
2 // *******************************************
3 // * License and Disclaimer
4 // *
5 // * The Geant4 software is copyright of th
6 // * the Geant4 Collaboration. It is provided
7 // * conditions of the Geant4 Software License
8 // * LICENSE and available at http://cern.ch/
9 // * include a list of copyright holders.
10 // *
11 // * Neither the authors of this software syst
12 // * institutes,nor the agencies providing fin
13 // * work make any representation or warran
14 // * regarding this software system or assum
15 // * use. Please see the license in the file
16 // * for the full disclaimer and the limitatio
17 // *
18 // * This code implementation is the result
19 // * technical work of the GEANT4 collaboratio
20 // * By using, copying, modifying or distri
21 // * any work based on the software) you ag
22 // * use in resulting scientific publicati
23 // * acceptance of all terms of the Geant4 Sof
24 // *******************************************
25 //
26 // G4Tokenizer
27 //
28 // Class description:
29 //
30 // String tokenizer.
31 // It derives from the implementation of the R
32 // It intrinsically uses STL string.
33
34 // Author: G.Cosmo, 11 October 2001
35 // -------------------------------------------
36 #ifndef G4Tokenizer_hh
37 #define G4Tokenizer_hh 1
38
39 #include "G4String.hh"
40
41 class G4Tokenizer
42 {
43 public:
44 G4Tokenizer(const G4String& stn)
45 : string2tokenize(stn)
46 , actual(0)
47 {}
48
49 G4String operator()(const char* str = " \t\n
50 {
51 std::size_t i, j, tmp;
52 G4bool hasws = false;
53 if(l == 0)
54 l = strlen(str);
55
56 // Skip leading delimeters
57 while(actual < string2tokenize.size())
58 {
59 for(i = 0; i < l; ++i)
60 {
61 if(string2tokenize[(G4int)actual] == s
62 hasws = true;
63 }
64 if(hasws)
65 {
66 ++actual;
67 hasws = false;
68 }
69 else
70 break;
71 }
72
73 for(j = actual; j < string2tokenize.size()
74 {
75 for(i = 0; i < l; ++i)
76 if(string2tokenize[(G4int)j] == str[i]
77 break;
78 if(i < l)
79 break;
80 }
81 if(j != string2tokenize.size())
82 {
83 tmp = actual;
84 actual = j + 1;
85 return string2tokenize.substr(tmp, j - t
86 }
87 else
88 {
89 tmp = actual;
90 actual = j;
91 return string2tokenize.substr(tmp, j - t
92 }
93 }
94
95 private:
96 G4String string2tokenize;
97 std::size_t actual;
98 };
99
100 #endif
101