37 lines
917 B
C
37 lines
917 B
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
if (argc < 2) return 1;
|
|
|
|
FILE *fd;
|
|
fd = popen(argv[1], "r");
|
|
if (!fd) return 1;
|
|
|
|
char buffer[256];
|
|
size_t chread;
|
|
/* String to store entire command contents in */
|
|
size_t comalloc = 256;
|
|
size_t comlen = 0;
|
|
char *comout = malloc(comalloc);
|
|
|
|
/* Use fread so binary data is dealt with correctly */
|
|
while ((chread = fread(buffer, 1, sizeof(buffer), fd)) != 0) {
|
|
if (comlen + chread >= comalloc) {
|
|
comalloc *= 2;
|
|
comout = realloc(comout, comalloc);
|
|
}
|
|
memmove(comout + comlen, buffer, chread);
|
|
comlen += chread;
|
|
}
|
|
|
|
/* We can now work with the output as we please. Just print
|
|
* out to confirm output is as expected */
|
|
fwrite(comout, 1, comlen, stdout);
|
|
free(comout);
|
|
pclose(fd);
|
|
return 0;
|
|
}
|