mp-utils/src/cat.c

/* cat -- third revision of a program to concatenate files and/or stdin onto */
/* stdout */


#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <unistd.h>
#include <string.h>

#include "support.h"


/* Params */
enum
    {
    U
    };

int main(int argc, char **argv)
    {
    int i, i2;

    char param_state[1] = {0};
    FILE *fd;

    i = i2 = 0;

    fd = 0;


    for(; (i = getopt(argc, argv, "u")) != -1;)
	{
	switch(i)
	    {
	    case 'u':
		param_state[U] = 1;
		break;
	    default:
		throw(NEEDARG_FAIL, mastrcat(argv[0], " [-u] [file ...]"));
	    }
	}
    i = optind;

    if(param_state[U])
	{
	setvbuf(stdout, NULL, _IONBF, 0);
	}


	do
	{
	if(argv[i] == NULL || !strcmp("-", argv[i]))
	    {
	    fd = fopen("/dev/stdin", "r");
	    }
	else
	    {
	    if( !(fd = fopen(argv[i], "r")))
		{
		throw(FOPEN_FAIL, mastrcat(argv[0], mastrcat(": could not open file ", argv[i])));
		}
	    }
	

	for(i2 = 0; (i2 = fgetc(fd)) != EOF; i2 = 0)
	    {
	    fputc(i2, stdout);
	    }
	

	i++;
	}
    while(i < argc);
    

    exit(EXIT_SUCCESS);
    }