#include <iostream.h>
#include <fstream.h>
#include <strstream.h>
#include "CPstring.h"
#include "vector.h"

// author: Owen Astrachan
// date  : May 12, 1996
//
// reads a file of titles, illustrates use of strstream
// to parse input
//
// input file: a sequence of lines, each line is a title
//             (collection of words)
//
// output: # of words in each title (line) followed by title
//

struct Title
{
    Vector<string> words;       // collection of words
    int numWords;               // # of words in collection
};

ostream & operator << (ostream & os, const Title & title)
// postcondition: title printed to stream os     
{
    int k;
    cout << " words = " << title.numWords << " : ";
    for(k=0; k < title.numWords; k++){
        os << title.words[k] << " ";
    }
    return os;
}

int main(int argc, char * argv[])
{
    Vector<Title> library(200);    // room for 200 titles
    int numTitles = 0;             // count of # titles
    
    string filename = "default";   // where is data stored
    string buffer;                 // for each line of input
    string word;                   // for each word from a line
    ifstream input;                // stream for input
    
    if (argc > 1)                  // argument passed to program
    {
        filename = argv[1]; 
    }

    input.open(filename.c_str());
    if (input.fail())
    {
        cout << "could not open file " << filename << endl;
        exit(1);
    }

    while (getline(input,buffer))
    {
        istrstream parseline(buffer.c_str());
        int count = 0;
        while (parseline >> word)   // count # of words on a line
        {
            count++;
        }
        library[numTitles].numWords = count;      // store # words
        library[numTitles].words.resize(count);   // exact size for vector

        parseline.clear();                        // clear for re-reading
        parseline.seekg(0);                       // reset to beginning
        count = 0;                                // reset count
        while (parseline >> word)
        {
            library[numTitles].words[count] = word;
            count++;
        }
        cout << library[numTitles] << endl;
        numTitles++;
    }
    cout << endl << "# titles = " << numTitles << endl;

    return 0;
}