eio_dir_stat_ls() tutorial

- Main Page
- Related Pages
- Modules
- Data Structures
- Files
- Examples

eio_dir_stat_ls() tutorial

- The filter callback, which allow or not a file to be seen by the main loop handler. This callback run in a separated thread.
- The main callback, which receive in the main loop all the file that are allowed by the filter. If you are updating a user interface it make sense to delay the insertion a little, so you get a chance to update the canvas for a bunch of file instead of one by one.
- The end callback, which is called in the main loop when the content of the directory has been correctly scanned and all the file notified to the main loop.
- The error callback, which is called if an error occurred or if the listing was cancelled during it's run. You can then retrieve the error type as an errno error.

Here is a simple example that implement a stupidly simple replacement for find:

#include <Ecore.h>
#include <Eio.h>
static Eina_Bool
_test_filter_cb(void *data, Eio_File *handler, const Eina_File_Direct_Info *info)
{
fprintf(stderr, "ACCEPTING: %s\n", info->path);
return EINA_TRUE;
}
static void
_test_main_cb(void *data, Eio_File *handler, const Eina_File_Direct_Info *info)
{
fprintf(stderr, "PROCESS: %s\n", info->path);
}
static void
_test_done_cb(void *data, Eio_File *handler)
{
printf("ls done\n");
ecore_main_loop_quit();
}
static void
_test_error_cb(void *data, Eio_File *handler, int error)
{
fprintf(stderr, "error: [%s]\n", strerror(error));
ecore_main_loop_quit();
}
int
main(int argc, char **argv)
{
Eio_File *cp;
if (argc != 2)
{
fprintf(stderr, "eio_ls directory\n");
return -1;
}
ecore_init();
eio_init();
cp = eio_dir_stat_ls(argv[1],
_test_filter_cb,
_test_main_cb,
_test_done_cb,
_test_error_cb,
NULL);
ecore_main_loop_begin();
eio_shutdown();
ecore_shutdown();
return 0;
}
ecore_shutdown
EAPI int ecore_shutdown(void)
Shuts down connections, signal handlers sockets etc.
Definition: ecore.c:371
ecore_init
EAPI int ecore_init(void)
Sets up connections, signal handlers, sockets etc.
Definition: ecore.c:230
ecore_main_loop_quit
void ecore_main_loop_quit(void)
Quits the main loop once all the events currently on the queue have been processed.
Definition: ecore_main.c:1321
ecore_main_loop_begin
void ecore_main_loop_begin(void)
Runs the application main loop.
Definition: ecore_main.c:1311
EINA_TRUE
#define EINA_TRUE
boolean value TRUE (numerical value 1)
Definition: eina_types.h:539
Eina_Bool
unsigned char Eina_Bool
Type to mimic a boolean.
Definition: eina_types.h:527
eio_init
EIO_API int eio_init(void)
Initialize eio and all its required submodule.
Definition: eio_main.c:276
eio_shutdown
EIO_API int eio_shutdown(void)
Shutdown eio and all its submodule if possible.
Definition: eio_main.c:340
eio_dir_stat_ls
EIO_API Eio_File * eio_dir_stat_ls(const char *dir, Eio_Filter_Direct_Cb filter_cb, Eio_Main_Direct_Cb main_cb, Eio_Done_Cb done_cb, Eio_Error_Cb error_cb, const void *data)
List the content of a directory and all its sub-content asynchronously.
Definition: eio_dir.c:1018
Eio_File
struct _Eio_File Eio_File
Generic asynchronous I/O reference.
Definition: Eio.h:73
_Eina_File_Direct_Info
The structure to store information of a path.
Definition: eina_file.h:193
_Eina_File_Direct_Info::path
char path[EINA_PATH_MAX]
The path.
Definition: eina_file.h:198