README.md

Description

Counts all valid curly brackets in a c++ source file. Tells where a file's brackets may be out of balance OR tells the user if the brackets are in balance.

More Info

file input

input file must be in same folder as .exe

(after compiled of course)

output to screen

none known

Submitted On
By	Jon Martin
Level	Beginner
User Rating	5.0 (10 globes from 2 users)
Compatibility	C++ (general)
Category	Debugging and Error Handling
World	C / C++
Archive File

Source Code

/*************************************************************************
J.R. Martin
Curly Bracket counter.
This program counts all valid curly brackets in c++
disregarding comment lines and paragraphs as well as constants (char and strings
including curly brackets).
*************************************************************************/
#include <iostream>
#include <cstdlib>
#include <string>
#include <fstream>
using namespace std;
void OpenInFile ( ifstream&, ofstream& );
void OpenOutFile ( ofstream& );
void CheckForBrackets ( ifstream&, ofstream& );
void GetComments ( char&, ifstream& );
void GetStringConstant ( char&, ifstream& );
void GetCharConstant ( char&, ifstream& );
int main()
{
	ofstream out;
	ifstream in;
	OpenOutFile ( out );
	OpenInFile ( in, out );
	CheckForBrackets ( in, out );
	out << "\n\nThank you for choosing Jon's Software.\n\n";
return 0;
}
void OpenInFile ( ifstream& SomeInFile, ofstream& out )
{
	string FileName;
	cout << "This Program counts Curly Brackets for a C++ program file and\n"
		<<	"validates if they are in balance. Please make sure you have placed your\n"
		<<	"file in the same folder as this program.\n\n";
		cout << "Please type the name of your input file: " << endl << endl;
	cin >> FileName;
	cout << FileName;
	cout << endl << endl;
	SomeInFile.open(FileName.c_str());
	if ( !SomeInFile )
	{
		out << "** Can't open " << FileName << " **" << endl;
		cout << "** Can't open " << FileName << " **" << endl;
		exit (1);
	}
}
void OpenOutFile ( ofstream& out )
{
	out.open( "output.dat" );			// Open the OutFile
		if ( !out )						// Test Outfile and warn if not opened
		{
			out << "*** Can't open output file ***\n\n";
			cout << "*** Can't open output file ***\n\n";
			exit (1);
		}
}
void CheckForBrackets ( ifstream& in, ofstream& out )
{
	char character;
	int countLeft = 0;
	int countRight = 0;
	int totalCount = 0;
	int runningCount = 0;
	in.get(character);
		while ( in && runningCount >= 0 )
		{
			while ( in && (character == ' ' || character == '\n') )
			{
				in.get(character);
			}
			switch ( character )
			{
			case '/':	GetComments (character, in);
				break;
			case '"':	GetStringConstant (character, in);
				break;
			case '\'':	GetCharConstant (character, in);
				break;
			}
			if ( character == '{' )
			{
				countLeft++;
				runningCount++;
				totalCount++;
			}
			else if (character == '}' )
			{
				countRight++;
				runningCount--;
				totalCount++;
			}
			if ( runningCount < 0 )
			{
				cout << "Your curly brackets are out of balance !!! " << endl << endl;
				cout << "The Program has stopped AND the counters are at the following positions: "
					<< endl << endl;
				cout << "Left's: " << countLeft << endl <<
					"Right's: " << countRight << endl << "Total count: "
					<< totalCount << endl << endl
					<< "** USE THE ABOVE COUNTS TO FIND THE ERROR!! **" << endl << endl;
				exit (1);
			}
			in.get(character);
		}
			cout << "The number of left brackets is " << countLeft << endl; //give totals
			cout << "The number of right brackets is " << countRight << endl;
			cout << "The total bracket count is " << totalCount << endl;
			if ( runningCount == 0 )
			{
																				// validate counts
				cout << "The curly brackets {} are in balance." << endl;			// OK
			}
			if ( runningCount != 0 )
			{
				cout << "The curly brackets {} are out of balance. " << endl;	// shun a bad count
																				// Not OK
			}
}
void GetComments ( char& c, ifstream& in )
{
	in.get(c);
	if ( c == '/' )
	{
		while ( in && c != '\n' )
		{
			in.get(c);
		}
	}
	else if ( c == '*' )
	{
		in.get(c);
		while (in)
		{
			while ( in && c != '*' )
			{
				in.get(c);
			}
			if ( c == '*' )
			{
				in.get(c);
				if ( c == '/' )
					return;
			}
		}
	}
	else
		return;
}
void GetStringConstant ( char& c, ifstream& in )
{
		do
		{
			in.get(c);
			while ( c == '\"' ) // get the escape sequence for \"
				in.get(c);
			if ( c == '\n' )
				return;
		}while ( in && c != '"' );
}
void GetCharConstant ( char& c, ifstream& in )
{
		do
		{
			in.get(c);
			while ( c == '\'' )
				in.get(c);
			if ( c == '\n')
				return;
		}while ( in && c != '\'' );
}