40f0c41932
This is some initial work on support real PTYs. Canonical mode is not supported at the moment.
62 lines
999 B
C
62 lines
999 B
C
/*
|
|
* cat
|
|
*
|
|
* Concatenates files together to standard output.
|
|
* In a supporting terminal, you can then pipe
|
|
* standard out to another file or other useful
|
|
* things like that.
|
|
*/
|
|
#include <stdio.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
|
|
#define CHUNK_SIZE 4096
|
|
|
|
void doit(int fd) {
|
|
while (1) {
|
|
char buf[CHUNK_SIZE];
|
|
int r = read(fd, buf, CHUNK_SIZE);
|
|
if (!r) return;
|
|
fwrite(buf, 1, r, stdout);
|
|
fflush(stdout);
|
|
}
|
|
}
|
|
|
|
int main(int argc, char ** argv) {
|
|
int ret = 0;
|
|
if (argc == 1) {
|
|
doit(0);
|
|
}
|
|
|
|
for (int i = 1; i < argc; ++i) {
|
|
int fd = open(argv[i], O_RDONLY);
|
|
if (!fd) {
|
|
fprintf(stderr, "%s: %s: no such file or directory\n", argv[0], argv[i]);
|
|
ret = 1;
|
|
continue;
|
|
}
|
|
|
|
struct stat _stat;
|
|
fstat(fd, &_stat);
|
|
|
|
if (S_ISDIR(_stat.st_mode)) {
|
|
fprintf(stderr, "%s: %s: Is a directory\n", argv[0], argv[i]);
|
|
close(fd);
|
|
ret = 1;
|
|
continue;
|
|
}
|
|
|
|
doit(fd);
|
|
|
|
close(fd);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* vim:tabstop=4
|
|
* vim:noexpandtab
|
|
* vim:shiftwidth=4
|
|
*/
|