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Geant4/externals/g4tools/include/tools/sprintf

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  1 // Copyright (C) 2010, Guy Barrand. All rights reserved.
  2 // See the file tools.license for terms.
  3 
  4 #ifndef tools_sprintf
  5 #define tools_sprintf
  6 
  7 #include <string>
  8 #include "snpf"
  9 
 10 namespace tools {
 11 
 12 inline bool vsprintf(std::string& a_string,int a_length,const char* a_format,va_list a_args){
 13   a_string.clear();
 14   if(a_length<0) return false;
 15   if(!a_format) return false;
 16   char* _s = new char[a_length+1];
 17   if(!_s) return false;
 18   _s[a_length] = '\0';
 19   int n = vsnpf(_s,a_length+1,a_format,a_args);
 20   if(n>a_length) {
 21     delete [] _s;
 22     return false;
 23   }
 24   if(_s[a_length]!='\0') {
 25     delete [] _s;
 26     return false;
 27   }
 28   a_string = _s;
 29   delete [] _s;
 30   return true;
 31 }
 32 
 33 
 34 inline bool sprintf(std::string& a_string,int a_length,const char* a_format,...){
 35   a_string.clear();
 36   if(a_length<0) return false;
 37   if(!a_format) return false;
 38   char* _s = new char[a_length+1];
 39   if(!_s) return false;
 40   _s[a_length] = '\0';
 41   va_list args;
 42   va_start(args,a_format);
 43   int n = vsnpf(_s,a_length+1,a_format,args);
 44   va_end(args);
 45   if(n>a_length) {
 46     delete [] _s;
 47     return false;
 48   }
 49   if(_s[a_length]!='\0') {
 50     delete [] _s;
 51     return false;
 52   }
 53   a_string = _s;
 54   delete [] _s;
 55   return true;
 56 }
 57 
 58 inline bool print2sv(std::string& a_string,int a_length,const char* a_format,va_list a_args){
 59   if(a_length<0) {a_string.clear();return false;}
 60   if(!a_format) {a_string.clear();return false;}
 61   a_string.assign(a_length,' '); //data = a_length+1
 62   char* _s = const_cast<char*>(a_string.c_str());
 63   //_s[a_length] shoulg be '\0'.
 64   int n = vsnpf(_s,a_length+1,a_format,a_args);
 65   if(n>a_length) { //a_string is compromised.
 66     a_string.clear(); //we cross fingers.
 67     return false;
 68   }
 69   if(_s[a_length]!='\0') { //a_string is compromised.
 70     a_string.clear(); //we cross fingers.
 71     return false;
 72   }
 73   a_string.resize(n);
 74   return true;
 75 }
 76 
 77 inline bool print2s(std::string& a_string,int a_length,const char* a_format,...){
 78   if(a_length<0) {a_string.clear();return false;}
 79   if(!a_format) {a_string.clear();return false;}
 80   a_string.assign(a_length,' '); //data = a_length+1
 81   char* _s = const_cast<char*>(a_string.c_str());
 82   //_s[a_length] shoulg be '\0'.
 83   va_list args;
 84   va_start(args,a_format);
 85   int n = vsnpf(_s,a_length+1,a_format,args);
 86   va_end(args);
 87   if(n>a_length) { //a_string is compromised.
 88     a_string.clear(); //we cross fingers.
 89     return false;
 90   }
 91   if(_s[a_length]!='\0') { //a_string is compromised.
 92     a_string.clear(); //we cross fingers.
 93     return false;
 94   }
 95   a_string.resize(n);
 96   return true;
 97 }
 98 
 99 template <class MATRIX> //for example : MATRIX = mat<symbol,4>
100 inline void set_matrix(MATRIX& a_matrix,const std::string& a_fmt) {
101   unsigned int DR = a_matrix.rows();
102   unsigned int DC = a_matrix.cols();
103   std::string ss;
104   for(unsigned int i=0;i<DR;i++) {
105     for(unsigned int j=0;j<DC;j++) {
106       tools::sprintf(ss,128,a_fmt.c_str(),i,j);
107       a_matrix.set_value(i,j,ss);
108     }
109   }
110 }
111 
112 }
113 
114 #endif