adding cs142 code

cs142/smcquay/lab09/Makefile

@@ -0,0 +1,29 @@
+CXX=g++
+CPPFLAGS=-Wall -g -std=c++0x
+SOURCES=main.cc util.cc person.cc
+OBJECTS=$(SOURCES:.cc=.o)
+EXE=restaurant
+
+all: $(EXE)
+
+main.o: main.cc util.o person.o
+util.o: util.h util.cc
+person.o: person.cc person.h
+
+$(EXE): $(OBJECTS)
+	$(CXX) $(LDFLAGS) $(OBJECTS) -o $@
+
+run: $(EXE)
+	./$(EXE) people.db /tmp/output.db
+	cat /tmp/output.db
+
+clean:
+	@rm -vf *.o
+	@rm -rvf *.dSYM
+	@rm -vf $(EXE)
+
+debug: $(EXE)
+	gdb $(EXE)
+
+valgrind: $(EXE)
+	valgrind --tool=memcheck --leak-check=yes ./$(EXE) people.db /tmp/output.db

cs142/smcquay/lab09/main.cc

@@ -0,0 +1,29 @@
+#include <iostream>
+#include <string>
+#include <vector>
+#include <stdexcept>
+
+using namespace std;
+
+#include "person.h"
+#include "util.h"
+
+const string usage = "usage: app <input file> <output file>";
+
+int main(int argc, char * argv []) {
+    if(argc != 3) {
+        cerr << usage << endl;
+        return 1;
+    }
+    string input_filename(argv[1]);
+    string output_filename(argv[2]);
+    try {
+        vector<person> people = parse_file(input_filename);
+        save_file(output_filename, people);
+    }
+    catch(runtime_error e) {
+        cerr << e.what() << endl;
+        return 1;
+    }
+    return 0;
+}

cs142/smcquay/lab09/people.db

@@ -0,0 +1,3 @@
+stephen mcquay    , 31
+derek      mcquay , 21
+   jimmy joshn shimmershi      ne the fourth    , 32

cs142/smcquay/lab09/person.cc

@@ -0,0 +1,7 @@
+#include <ostream>
+#include "person.h"
+
+ostream & operator<<(ostream & os, person & p) {
+    os << p.name << ", " << p.age;
+    return os;
+}

cs142/smcquay/lab09/person.h

@@ -0,0 +1,16 @@
+#ifndef __PERSON_H__
+#define __PERSON_H__
+
+#include <ostream>
+#include <string>
+using namespace std;
+
+struct person {
+    string name;
+    int age;
+
+    person(string name, int age): name(name), age(age) {};
+    friend ostream & operator<<(ostream & os, person & p);
+};
+
+#endif

cs142/smcquay/lab09/util.cc

@@ -0,0 +1,82 @@
+#include <iostream>
+#include <string>
+#include <vector>
+#include <fstream>
+#include <sstream>
+#include <stdexcept>
+using namespace std;
+
+#include "util.h"
+#include "person.h"
+
+ostream & operator<<(ostream & os, vector<int> & v) {
+    os << "[";
+    for(unsigned int i = 0; i < v.size(); i++) {
+        os << v[i];
+        if(i != v.size() - 1) {
+            os << ", ";
+        }
+    }
+    os << "]";
+    return os;
+}
+
+vector<string> tokenize(const string & str, const string & delimiters) {
+    vector<string> tokens;
+    // Skip delimiters at beginning.
+    string::size_type lastPos = str.find_first_not_of(delimiters, 0);
+    // Find first "non-delimiter".
+    string::size_type pos  = str.find_first_of(delimiters, lastPos);
+    while (string::npos != pos || string::npos != lastPos)
+    {
+        // Found a token, add it to the vector.
+        tokens.push_back(str.substr(lastPos, pos - lastPos));
+        // Skip delimiters.  Note the "not_of"
+        lastPos = str.find_first_not_of(delimiters, pos);
+        // Find next "non-delimiter"
+        pos = str.find_first_of(delimiters, lastPos);
+    }
+    return tokens;
+}
+
+vector<person> parse_file(string filename) {
+    ifstream inputs(filename.c_str());
+    if(inputs.good()) {
+        vector<person> people;
+        string line;
+        int age;
+
+        while(getline(inputs, line)) {
+            vector<string> tokens = tokenize(line, ",");
+            string name = tokens[0];
+            string age_s = tokens[1];
+
+            //clean up name
+            vector<string> name_tokens = tokenize(name, " ");
+            name.clear();
+            for(unsigned int i = 0; i < name_tokens.size(); i++) {
+                name += name_tokens[i];
+                if(i != name_tokens.size() - 1) {
+                    name += " ";
+                }
+            }
+
+            // parse an int
+            stringstream age_parser(age_s);
+            age_parser >> age;
+            people.push_back(person(name, age));
+        }
+
+        return people;
+    }
+    else {
+        throw runtime_error("Input file was not good; please verify.");
+    }
+}
+
+void save_file(string filename, const vector<person> & people) {
+    ofstream output_file(filename.c_str());
+    for(auto p: people) {
+        output_file << p << endl;
+    }
+}

cs142/smcquay/lab09/util.h

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+#ifndef __UTIL_H__
+#define __UTIL_H__
+
+#include <vector>
+#include <string>
+#include <ostream>
+
+using namespace std;
+
+#include "person.h"
+
+ostream & operator<<(ostream &, vector<bool> &);
+vector<string> tokenize(const string & str, const string & delimiters=" ");
+vector<person> parse_file(string filename);
+void save_file(string filename, const vector<person> & people);
+
+#endif