#include <ctype.h>
#include <string.h>
#include <stdio.h>


void strip(FILE * i, FILE * o)
{
	char lin[513];

	while (fgets(lin, 512, i) != NULL)
	{
		char * c = lin;
		for(; isspace(*c); c++);  // salta spazi iniziali

		char instring = '\0';
		char wasspace = 0;

		for (; *c; c++)
		{
			if (*c == '/' && *(c+1) == '/') break;

			if (*c == '#')
			{
				fputc(*c, o);
				while (isspace(*(++c))); 
			}
			if (*c == '"' || *c == '\'')
			{
				if (instring == *c) instring = '\0';
				else
				if (instring == '\0') instring = *c;
			}

			if (isspace(*c))
			{
				if (!instring)
				{
					if (wasspace) continue;
					wasspace = 1;
				}
			} else wasspace = 0;

			fputc(*c, o);
		}
	}
}


int main(int argc, char ** argv)
{
//	cerr << "Strip 0.93 - White spaces filter by Guy '93" << endl;
	FILE * i = argc > 1 ? fopen(argv[1], "r") : stdin;
	FILE * o = argc > 2 ? fopen(argv[2], "w") : stdout;
	
	strip(i, o);
	return 0;
}