1#include <stdio.h> 2#include <stdlib.h> 3 4#include <uv.h> 5 6uv_loop_t *loop; 7const char *command; 8 9void run_command(uv_fs_event_t *handle, const char *filename, int events, int status) { 10 char path[1024]; 11 size_t size = 1023; 12 // Does not handle error if path is longer than 1023. 13 uv_fs_event_getpath(handle, path, &size); 14 path[size] = '\0'; 15 16 fprintf(stderr, "Change detected in %s: ", path); 17 if (events & UV_RENAME) 18 fprintf(stderr, "renamed"); 19 if (events & UV_CHANGE) 20 fprintf(stderr, "changed"); 21 22 fprintf(stderr, " %s\n", filename ? filename : ""); 23 system(command); 24} 25 26int main(int argc, char **argv) { 27 if (argc <= 2) { 28 fprintf(stderr, "Usage: %s <command> <file1> [file2 ...]\n", argv[0]); 29 return 1; 30 } 31 32 loop = uv_default_loop(); 33 command = argv[1]; 34 35 while (argc-- > 2) { 36 fprintf(stderr, "Adding watch on %s\n", argv[argc]); 37 uv_fs_event_t *fs_event_req = malloc(sizeof(uv_fs_event_t)); 38 uv_fs_event_init(loop, fs_event_req); 39 // The recursive flag watches subdirectories too. 40 uv_fs_event_start(fs_event_req, run_command, argv[argc], UV_FS_EVENT_RECURSIVE); 41 } 42 43 return uv_run(loop, UV_RUN_DEFAULT); 44} 45