libzapi

//  This is a stable class, and may not change except for emergencies. It
//  is provided in stable builds.
//  Create a new directory item that loads in the full tree of the specified
//  path, optionally located under some parent path. If parent is "-", then
//  loads only the top-level directory, and does not use parent as a path.
CZMQ_EXPORT zdir_t *
    zdir_new (const char *path, const char *parent);

//  Destroy a directory tree and all children it contains.
CZMQ_EXPORT void
    zdir_destroy (zdir_t **self_p);

//  Return directory path
CZMQ_EXPORT const char *
    zdir_path (zdir_t *self);

//  Return last modification time for directory.
CZMQ_EXPORT time_t
    zdir_modified (zdir_t *self);

//  Return total hierarchy size, in bytes of data contained in all files
//  in the directory tree.
CZMQ_EXPORT off_t
    zdir_cursize (zdir_t *self);

//  Return directory count
CZMQ_EXPORT size_t
    zdir_count (zdir_t *self);

//  Returns a sorted list of zfile objects; Each entry in the list is a pointer
//  to a zfile_t item already allocated in the zdir tree. Do not destroy the
//  original zdir tree until you are done with this list.
//  Caller owns return value and must destroy it when done.
CZMQ_EXPORT zlist_t *
    zdir_list (zdir_t *self);

//  Remove directory, optionally including all files that it contains, at
//  all levels. If force is false, will only remove the directory if empty.
//  If force is true, will remove all files and all subdirectories.
CZMQ_EXPORT void
    zdir_remove (zdir_t *self, bool force);

//  Calculate differences between two versions of a directory tree.
//  Returns a list of zdir_patch_t patches. Either older or newer may
//  be null, indicating the directory is empty/absent. If alias is set,
//  generates virtual filename (minus path, plus alias).
//  Caller owns return value and must destroy it when done.
CZMQ_EXPORT zlist_t *
    zdir_diff (zdir_t *older, zdir_t *newer, const char *alias);

//  Return full contents of directory as a zdir_patch list.
//  Caller owns return value and must destroy it when done.
CZMQ_EXPORT zlist_t *
    zdir_resync (zdir_t *self, const char *alias);

//  Load directory cache; returns a hash table containing the SHA-1 digests
//  of every file in the tree. The cache is saved between runs in .cache.
//  Caller owns return value and must destroy it when done.
CZMQ_EXPORT zhash_t *
    zdir_cache (zdir_t *self);

//  Print contents of directory to open stream
CZMQ_EXPORT void
    zdir_fprint (zdir_t *self, FILE *file, int indent);

//  Print contents of directory to stdout
CZMQ_EXPORT void
    zdir_print (zdir_t *self, int indent);

//  Create a new zdir_watch actor instance:
//
//      zactor_t *watch = zactor_new (zdir_watch, NULL);
//
//  Destroy zdir_watch instance:
//
//      zactor_destroy (&watch);
//
//  Enable verbose logging of commands and activity:
//
//      zstr_send (watch, "VERBOSE");
//
//  Subscribe to changes to a directory path:
//
//      zsock_send (watch, "ss", "SUBSCRIBE", "directory_path");
//
//  Unsubscribe from changes to a directory path:
//
//      zsock_send (watch, "ss", "UNSUBSCRIBE", "directory_path");
//
//  Receive directory changes:
//      zsock_recv (watch, "sp", &path, &patches);
//
//      // Delete the received data.
//      free (path);
//      zlist_destroy (&patches);
CZMQ_EXPORT void
    zdir_watch (zsock_t *pipe, void *unused);

//  Self test of this class.
CZMQ_EXPORT void
    zdir_test (bool verbose);

Please add '@interface' section in './../src/zdir.c'.