zzip.cpp

// wzip.cpp, by Yingwu Zhu
#include <iostream>
#include <fstream>
#include <string>
using namespace std;

int main(int argc, char *argv[])
{
	if (argc < 2)
	{
		cout << string(argv[0] + 2) << " file1 [file2 ...]\n";
		exit(1);
	}
	for (int i = 1; i < argc; i++)
	{
		ifstream fin(argv[i], ifstream::in);
		if (!fin.is_open())
		{
			cout << string(argv[0] + 2) << ": cannot open file\n";
			exit(1);
		}
		int count = 0;
		char c, last;
		while (fin.get(c))
		{
			if (count && c != last)
			{
				cout.write((char *)&count, sizeof(int));
				cout.write((char *)&last, 1);
				count = 0;
			}
			last = c;
			count++;
		}
		if (count)
		{
			cout.write((char *)&count, sizeof(int));
			cout.write((char *)&last, 1);
		}

		fin.close();
	}
	return 0;
}