#include <stdio.h>
#include <stdlib.h>
#include <uv.h>
uv_loop_t *loop;
const char *command;
void run_command(uv_fs_event_t *handle, const char *filename, int events, int status) {
char path[1024];
size_t size = 1023;
// Does not handle error if path is longer than 1023.
uv_fs_event_getpath(handle, path, &size);
path[size] = '\0';
fprintf(stderr, "Change detected in %s: ", path);
if (events & UV_RENAME)
fprintf(stderr, "renamed");
if (events & UV_CHANGE)
fprintf(stderr, "changed");
fprintf(stderr, " %s\n", filename ? filename : "");
system(command);
}
int main(int argc, char **argv) {
if (argc <= 2) {
fprintf(stderr, "Usage: %s <command> <file1> [file2 ...]\n", argv[0]);
return 1;
}
loop = uv_default_loop();
command = argv[1];
while (argc-- > 2) {
fprintf(stderr, "Adding watch on %s\n", argv[argc]);
uv_fs_event_t *fs_event_req = malloc(sizeof(uv_fs_event_t));
uv_fs_event_init(loop, fs_event_req);
// The recursive flag watches subdirectories too.
uv_fs_event_start(fs_event_req, run_command, argv[argc], UV_FS_EVENT_RECURSIVE);
}
return uv_run(loop, UV_RUN_DEFAULT);
}