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// Remove some chars and replace them with spaces

string neutchars(const string &str, string delims)

{

    string out;

    string::size_type startPos, pos;

    for (pos = 0;;) { 

        // Skip initial delims, break if this eats all.

        if ((startPos = str.find_first_not_of(delims, pos)) == string::npos)

      break;

        // Find next delimiter or end of string (end of token)

        pos = str.find_first_of(delims, startPos);

        // Add token to the output. Note: token cant be empty here

  if (pos == string::npos) {

      out += str.substr(startPos);

  } else {

      out += str.substr(startPos, pos - startPos) + " ";

  }

    }

    return out;

}

/* Truncate a string to a given maxlength, avoiding cutting off midword

 * if reasonably possible. Note: we could also use textsplit, stopping when

 * we have enough, this would be cleanly utf8-aware but would remove 

 * punctuation */

static const string SEPAR = " \t\n\r-:.;,/[]{}";

string truncate_to_word(string & input, string::size_type maxlen)

{

    string output;

    if (input.length() <= maxlen) {

  output = input;

    } else {

  output = input.substr(0, maxlen);

  string::size_type space = output.find_last_of(SEPAR);

  // Original version only truncated at space if space was found after

  // maxlen/2. But we HAVE to truncate at space, else we'd need to do

  // utf8 stuff to avoid truncating at multibyte char. In any case,

  // not finding space means that the text probably has no value.

  // Except probably for Asian languages, so we may want to fix this 

  // one day

  if (space == string::npos) {

      output.erase();

  } else {

      output.erase(space);

  }

  output += " ...";

    }

    return output;

}