#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <strings.h>
#include <sys/stat.h>

extern const char * const __progname;

static int nonfull;
static int invert = 0;

static void usage(void) __attribute__((__noreturn__));
static void usage(void)
{
 fprintf(stderr,"Usage: %s [flags] [--] file [file [file...]]\n",__progname);
 fprintf(stderr,"       %s [flags] [--] -    (to read filenames from stdin)\n",__progname);
 fprintf(stderr,"Flags:\n");
 fprintf(stderr,"-i  invert sense of printing test\n");
 exit(1);
}

static char *readaline(FILE *f)
{
 char *b;
 int a;
 int l;
 int c;

 static void savec(char c)
  { if (l >= a) b = realloc(b,a=l+16);
    b[l++] = c;
  }

 b = 0;
 a = 0;
 l = 0;
 while (1)
  { c = getc(f);
    if (c == EOF)
     { if (l > 0) savec('\0');
       return(b);
     }
    if (c == '\r') continue;
    if (c == '\n')
     { savec('\0');
       return(b);
     }
    savec(c);
  }
}

static void process_name(const char *fn)
{
 FILE *f;
 char *l;
 int hsz;
 int sz;
 int full;
 struct stat stb;

 f = fopen(fn,"r");
 if (f == 0)
  { fprintf(stderr,"%s: %s: can't open: %s\n",__progname,fn,strerror(errno));
    return;
  }
 sz = -1;
 while ((l=readaline(f)))
  { if (l[0] == '\0')
     { free(l);
       if (sz < 0)
	{ fclose(f);
	  return;
	}
       hsz = ftell(f);
       fstat(fileno(f),&stb);
       fclose(f);
       if (stb.st_size == sz+hsz)
	{ full = 1;
	}
       else if (stb.st_size > sz+hsz)
	{ fprintf(stderr,"%s: %s: file larger than required\n",__progname,fn);
	  full = 1;
	}
       else
	{ nonfull ++;
	  full = 0;
	}
       if (invert ? !full : full) printf("%s\n",fn);
       return;
     }
    if (!strncasecmp(l,"content-length:",15))
     { if (sz >= 0)
	{ fprintf(stderr,"%s: %s: multiple Content-Length:s\n",__progname,fn);
	}
       sz = atoi(l+15);
     }
    free(l);
  }
 fclose(f);
}

static void names_from_stdin(void)
{
 char *l;

 while ((l=readaline(stdin)))
  { process_name(l);
    free(l);
  }
}

static void names_from_args(int ac, char **av)
{
 for (;ac>0;ac--,av++) process_name(av[0]);
}

int main(int, char **);
int main(int ac, char **av)
{
 while (1)
  { if (ac < 2) usage();
    if (!strcmp(av[1],"-i"))
     { invert = ! invert;
       ac --;
       av ++;
       continue;
     }
    if (!strcmp(av[1],"--"))
     { ac --;
       av ++;
       break;
     }
    break;
  }
 nonfull = 0;
 if ((ac == 2) && !strcmp(av[1],"-"))
  { names_from_stdin();
  }
 else
  { names_from_args(ac-1,av+1);
  }
 exit(nonfull);
}