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  1. #include <vector>
  2. #include <string>
  3. #include <iostream>
  4. #include <iomanip>
  5.  
  6. using namespace std;
  7.  
  8. string getElement(const char* &c)
  9. {
  10.     string t;
  11.     while(*c &&(*c == ' ' || *c == ',' || *c == '}')) ++c;
  12.     if (*c == 0) return "";
  13.     if (*c == '{')
  14.     {
  15.         int cnt = 0;
  16.         do {
  17.             t += *c;
  18.             if (*c == '{') cnt++;
  19.             if (*c == '}') cnt--;
  20.             c++;
  21.         } while(cnt);
  22.     }
  23.     else
  24.     {
  25.         while(*c != ',' && *c != '}' )
  26.         {
  27.             if (*c != ' ') t += *c;
  28.             c++;
  29.         }
  30.     }
  31.     return t;
  32. }
  33.  
  34. vector<string> parse(const string& s)
  35. {
  36.     vector<string> v;
  37.     const char * c = s.data();
  38.     for(;*c && *c != '{'; ++c);
  39.     if (*c++ == 0) return v;
  40.     string t;
  41.  
  42.     while((t = getElement(c)).size())
  43.         v.push_back(t);
  44.     return v;
  45. }
  46.  
  47. int main(int argc, char * argv[])
  48. {
  49.     for(auto s: parse("{ a, b, c }"      )) cout << "[" << s << "]"; cout << endl;
  50.     for(auto s: parse("{ {a}, {b}, {c} }")) cout << "[" << s << "]"; cout << endl;
  51.     for(auto s: parse("{ {a, b} , c }"   )) cout << "[" << s << "]"; cout << endl;
  52.     for(auto s: parse("{ {a, {b}} , c }" )) cout << "[" << s << "]"; cout << endl;
  53. }
  54.  
Success #stdin #stdout 0s 5568KB
comments (?)
stdin 
Standard input is empty
stdout 
[a][b][c]
[{a}][{b}][{c}]
[{a, b}][c]
[{a, {b}}][c]
https://ideone.com/xtX9Oy
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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