Untitled


#include <iostream>
#include <fstream>
#include <string>

using namespace std;

void remove_header(string &line);
void remove_footer(string &line);
bool contains_func(string line);
int find_pos(string line);

/*Reads a HTML document and removes all HTML elements and outputs a text file with plain text*/

int main()
{
	string line;
	ifstream htmlStream("test_file.html");
	ofstream output("output.txt");
	if (htmlStream.is_open())
    {
		while ( htmlStream.good() )
		{
			getline (htmlStream,line);

			if (contains_func(line)== true)
			{
				remove_header(line);
			}

			if (contains_func(line)== true)
			{
				remove_footer(line);
			}

			if (output.is_open())
			{
				output<<line<<"\n";
			}
		}
    }
    htmlStream.close();
	output.close();
	return 0;
}


/**
*Takes in a string and removes the start tag of the html element ex. <html>
@param &line A line of code taken from a HTML file
*/
void remove_header(string &line)
{
	int end_pos=0;
	int start_pos = find_pos(line);

	if (start_pos == 0)
	{
		for (int j=0;j<line.length();j++)
		{
			if (line[j]!='>')
			{
				end_pos++;
			}
			else
			{
				end_pos++;
				break;
			}
		}
	}
	// if HTML element desginates a list add a dash instead of just removing the element
	if (line.substr(start_pos,end_pos) == "<li>")
	{
		line.replace(start_pos,end_pos,"- ");
	}
	else
		line.erase(start_pos,end_pos);
}

/**
*Takes in a string and removes the end tag of the html element ex. </html>
@param &line A line of code taken from a HTML file
*/
void remove_footer(string &line)
{
	int end_pos=0;
	int start_pos = find_pos(line);
	if (start_pos > 0)
	{
		for (int j=0;j<line.length();j++)
		{
			if (line[j]!='>')
			{
				end_pos++;
			}
			else
			{
				end_pos++;
				break;
			}
		}
	}
	line.erase(start_pos,end_pos);
}

/**
*Takes in a string and finds the position where the HTML element begins
@param line A line of code taken from a HTML file
@return The position where the HTML element starts
*/
int find_pos(string line)
{
	for (int i = 0;i<line.length();i++)
	{
		if(line[i] == '<')
		{
			return i;
		}
	}
}

/**
*Determines if the string contains an HTML element
*Used to determine if remove functions should be implemented
@param line A line of code taken from a HTML file
@return true If the string contains an HTML element ex. '<html>'
*/
bool contains_func(string line)
{
	for (int i = 0;i<line.length();i++)
	{
		while(line[i] != '<')
		{
			break;
		}

		if (line[i] == '<')
		{
			return true;
		}
	}
}