83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
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#include <iostream>
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#include <string>
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#include <vector>
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#include <fstream>
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#include <sstream>
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#include <stdexcept>
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using namespace std;
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#include "util.h"
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#include "person.h"
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ostream & operator<<(ostream & os, vector<int> & v) {
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os << "[";
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for(unsigned int i = 0; i < v.size(); i++) {
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os << v[i];
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if(i != v.size() - 1) {
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os << ", ";
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}
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}
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os << "]";
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return os;
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}
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vector<string> tokenize(const string & str, const string & delimiters) {
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vector<string> tokens;
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// Skip delimiters at beginning.
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string::size_type lastPos = str.find_first_not_of(delimiters, 0);
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// Find first "non-delimiter".
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string::size_type pos = str.find_first_of(delimiters, lastPos);
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while (string::npos != pos || string::npos != lastPos)
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{
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// Found a token, add it to the vector.
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tokens.push_back(str.substr(lastPos, pos - lastPos));
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// Skip delimiters. Note the "not_of"
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lastPos = str.find_first_not_of(delimiters, pos);
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// Find next "non-delimiter"
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pos = str.find_first_of(delimiters, lastPos);
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}
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return tokens;
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}
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vector<person> parse_file(string filename) {
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ifstream inputs(filename.c_str());
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if(inputs.good()) {
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vector<person> people;
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string line;
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int age;
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while(getline(inputs, line)) {
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vector<string> tokens = tokenize(line, ",");
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string name = tokens[0];
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string age_s = tokens[1];
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//clean up name
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vector<string> name_tokens = tokenize(name, " ");
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name.clear();
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for(unsigned int i = 0; i < name_tokens.size(); i++) {
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name += name_tokens[i];
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if(i != name_tokens.size() - 1) {
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name += " ";
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}
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}
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// parse an int
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stringstream age_parser(age_s);
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age_parser >> age;
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people.push_back(person(name, age));
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}
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return people;
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}
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else {
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throw runtime_error("Input file was not good; please verify.");
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}
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}
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void save_file(string filename, const vector<person> & people) {
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ofstream output_file(filename.c_str());
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for(auto p: people) {
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output_file << p << endl;
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}
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}
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