| Geant4 Cross Reference |
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. *
10 // * *
11 // * Neither the authors of this software system, nor their employing *
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14 // * regarding this software system or assume any liability for its *
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17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
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24 // ********************************************************************
25 //
26 // G4Tokenizer
27 //
28 // Class description:
29 //
30 // String tokenizer.
31 // It derives from the implementation of the Rogue Wave RWTokenizer.
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", std::size_t l = 0)
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] == str[i])
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(); ++j)
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 - tmp);
86 }
87 else
88 {
89 tmp = actual;
90 actual = j;
91 return string2tokenize.substr(tmp, j - tmp);
92 }
93 }
94
95 private:
96 G4String string2tokenize;
97 std::size_t actual;
98 };
99
100 #endif
101