toaruos/userspace/cat.c

52 lines
810 B
C

/*
* cat
*/
#include <stdio.h>
#define CHUNK_SIZE 4096
int main(int argc, char ** argv) {
int ret = 0;
for (int i = 1; i < argc; ++i) {
FILE * fd;
if (argc > 1) {
fd = fopen(argv[i], "r");
if (!fd) {
fprintf(stderr, "%s: %s: no such file or directory\n", argv[0], argv[1]);
ret = 1;
continue;
}
}
size_t length;
fseek(fd, 0, SEEK_END);
length = ftell(fd);
fseek(fd, 0, SEEK_SET);
char buf[CHUNK_SIZE];
while (length > CHUNK_SIZE) {
fread( buf, 1, CHUNK_SIZE, fd);
fwrite(buf, 1, CHUNK_SIZE, stdout);
fflush(stdout);
length -= CHUNK_SIZE;
}
if (length > 0) {
fread( buf, 1, length, fd);
fwrite(buf, 1, length, stdout);
fflush(stdout);
}
fclose(fd);
}
return ret;
}
/*
* vim:tabstop=4
* vim:noexpandtab
* vim:shiftwidth=4
*/