boost spirit extracting first word and store it in a vector

Hi,

I have problems with Boost.Spirit parsing a string.

The string looks like

name1 has this and that.\n 
name 2 has this and that.\n 
na me has this and that.\n

and I have to extract the names. The text "has this and that" is always the same but the name can consist of spaces therefore I can't use graph_p.

1) How do I parse such a string?

Since the string has several lines of that format I have to store the names in a vector.

I used something like

std::string name;
rule<> r = *graph_p[append(name)];

for saving one name but

2) what's the best way to save several names in a vector?

Thanks in advance

Konrad

From stackoverflow

• I presume there is a reason why you are using Boost.Spirit and not STL's string's find method? E.g:

  string s = "na me has this and that.\n";
  myVector . push_back( s.substr( 0, s.find( "has this and that" ) ) );
  

• I think this will do the trick:

  vector<string> names;
  string name;
  parse(str,
      *(  
         (*(anychar_p - "has this and that.")) [assign_a(name)]
         >> "has this and that.\n") [push_back_a(names, name)]
       ))
  

  Benoît : +1. Clean and simple !

• vector<string> names;
  parse(str,
      *(  
         (*(anychar_p - "has this and that.")) [push_back_a(names)]
         >> "has this and that.\n")
       ))
  

  Hi,

  thanks for your response. I have some problems with this version because there are following lines which have a completely different format and they are also parsed as true because there obviously is no "has this and that.". So I changed it to

  vector<string> names;
  parse(str,
      *(  
         (*(anychar_p - "has this and that.") >> "has this and that.\n"))[push_back_a(names)]      
       ))
  

  Now it parses the lines right but I got a new problem with the push_back actor because now it is pushing the complete line " has this and that" into the vector. Is it possible to remove the "has this and that. " before pushing it back or do I have to manually edit the vector afterwards?