string manipulation

This is a discussion on string manipulation within the C++ Programming forums, part of the General Programming Boards category; How do i get the contents of a file into a buffer so that i can use some <string> functions ...

  1. #1
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    string manipulation

    How do i get the contents of a file into a buffer so that i can use some <string> functions on it?

    Cheers
    Last edited by wart101; 12-11-2006 at 12:54 AM.
    WhAtHA hell Is GoInG ON

  2. #2
    In the Land of Diddly-Doo g4j31a5's Avatar
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    Dunno if this is what you wanted:

    http://www.arachnoid.com/cpptutor/student2.html

  3. #3
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    Quote Originally Posted by g4j31a5
    Dunno if this is what you wanted:

    http://www.arachnoid.com/cpptutor/student2.html
    Sorry i wasn't to clear, i know how to ge a file into a buffer but i want to convert it from (const * char) to (string) but i don't know how to.

    I hope that makes sence.
    WhAtHA hell Is GoInG ON

  4. #4
    In the Land of Diddly-Doo g4j31a5's Avatar
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    I think the fstream's getline() function can have a string as the output parameter (CMIIW). Or why don't you use the copy constructor of the string? E.g.

    Code:
     char str1[]="Hello World!";
     std::string str2=str1;

  5. #5
    Registered User hk_mp5kpdw's Avatar
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    If you want to read the entire contents of a file into a string object you can use a stringstream as an intermediate object.
    Code:
    ifstream file("foo.txt");
    stringstream sstr;
    string info;
    
    if( file.is_open() )
    {
        sstr << file.rdbuf();  // Read entire file into stringstream
        info = sstr.str();     // Convert stringstream into string
        // Do whatever you want with the string "info".
    }
    "Owners of dogs will have noticed that, if you provide them with food and water and shelter and affection, they will think you are god. Whereas owners of cats are compelled to realize that, if you provide them with food and water and shelter and affection, they draw the conclusion that they are gods."
    -Christopher Hitchens

  6. #6
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    Quote Originally Posted by hk_mp5kpdw
    If you want to read the entire contents of a file into a string object you can use a stringstream as an intermediate object.
    Code:
    ifstream file("foo.txt");
    stringstream sstr;
    string info;
    
    if( file.is_open() )
    {
        sstr << file.rdbuf();  // Read entire file into stringstream
        info = sstr.str();     // Convert stringstream into string
        // Do whatever you want with the string "info".
    }
    Thanks mate that is exactly what i needed, cheers.
    WhAtHA hell Is GoInG ON

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