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#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "ecore_file_private.h"
#ifdef HAVE_POLL
/*
* TODO:
* - Implement recursive as an option!
* - Keep whole path or just name of file? (Memory or CPU...)
* - Remove requests without files?
* - Change poll time
*/
typedef struct _Ecore_File_Monitor_Poll Ecore_File_Monitor_Poll;
#define ECORE_FILE_MONITOR_POLL(x) ((Ecore_File_Monitor_Poll *)(x))
struct _Ecore_File_Monitor_Poll
{
Ecore_File_Monitor monitor;
int mtime;
unsigned char deleted;
};
#define ECORE_FILE_INTERVAL_MIN 1.0
#define ECORE_FILE_INTERVAL_STEP 0.5
#define ECORE_FILE_INTERVAL_MAX 5.0
static double _interval = ECORE_FILE_INTERVAL_MIN;
static Ecore_Timer *_timer = NULL;
static Ecore_File_Monitor *_monitors = NULL;
static int _lock = 0;
static Eina_Bool _ecore_file_monitor_poll_handler(void *data);
static void _ecore_file_monitor_poll_check(Ecore_File_Monitor *em);
static int _ecore_file_monitor_poll_checking(Ecore_File_Monitor *em, char *name);
int
ecore_file_monitor_poll_init(void)
{
return 1;
}
int
ecore_file_monitor_poll_shutdown(void)
{
while(_monitors)
ecore_file_monitor_poll_del(_monitors);
if (_timer)
{
ecore_timer_del(_timer);
_timer = NULL;
}
return 1;
}
Ecore_File_Monitor *
ecore_file_monitor_poll_add(const char *path,
void (*func) (void *data, Ecore_File_Monitor *em,
Ecore_File_Event event,
const char *path),
void *data)
{
Ecore_File_Monitor *em;
size_t len;
if (!path) return NULL;
if (!func) return NULL;
em = calloc(1, sizeof(Ecore_File_Monitor_Poll));
if (!em) return NULL;
if (!_timer)
_timer = ecore_timer_add(_interval, _ecore_file_monitor_poll_handler, NULL);
else
ecore_timer_interval_set(_timer, ECORE_FILE_INTERVAL_MIN);
em->path = strdup(path);
len = strlen(em->path);
if (em->path[len - 1] == '/' && strcmp(em->path, "/"))
em->path[len - 1] = 0;
em->func = func;
em->data = data;
ECORE_FILE_MONITOR_POLL(em)->mtime = ecore_file_mod_time(em->path);
_monitors = ECORE_FILE_MONITOR(eina_inlist_append(EINA_INLIST_GET(_monitors), EINA_INLIST_GET(em)));
if (ecore_file_exists(em->path))
{
if (ecore_file_is_dir(em->path))
{
/* Check for subdirs */
Eina_List *files;
char *file;
files = ecore_file_ls(em->path);
EINA_LIST_FREE(files, file)
{
Ecore_File *f;
char buf[PATH_MAX];
f = calloc(1, sizeof(Ecore_File));
if (!f)
{
free(file);
continue;
}
snprintf(buf, sizeof(buf), "%s/%s", em->path, file);
f->name = file;
f->mtime = ecore_file_mod_time(buf);
f->is_dir = ecore_file_is_dir(buf);
em->files = (Ecore_File *) eina_inlist_append(EINA_INLIST_GET(em->files), EINA_INLIST_GET(f));
}
}
}
else
{
ecore_file_monitor_poll_del(em);
return NULL;
}
return em;
}
void
ecore_file_monitor_poll_del(Ecore_File_Monitor *em)
{
Ecore_File *l;
if (_lock)
{
ECORE_FILE_MONITOR_POLL(em)->deleted = 1;
return;
}
/* Remove files */
/*It's possible there weren't any files to monitor, so check if the list is init*/
if (em->files)
{
for (l = em->files; l;)
{
Ecore_File *file = l;
l = (Ecore_File *) EINA_INLIST_GET(l)->next;
free(file->name);
free(file);
}
}
if (_monitors)
_monitors = ECORE_FILE_MONITOR(eina_inlist_remove(EINA_INLIST_GET(_monitors), EINA_INLIST_GET(em)));
free(em->path);
free(em);
if (_timer)
{
if (!_monitors)
{
ecore_timer_del(_timer);
_timer = NULL;
}
else
ecore_timer_interval_set(_timer, ECORE_FILE_INTERVAL_MIN);
}
}
static Eina_Bool
_ecore_file_monitor_poll_handler(void *data __UNUSED__)
{
Ecore_File_Monitor *l;
_interval += ECORE_FILE_INTERVAL_STEP;
_lock = 1;
EINA_INLIST_FOREACH(_monitors, l)
_ecore_file_monitor_poll_check(l);
_lock = 0;
if (_interval > ECORE_FILE_INTERVAL_MAX)
_interval = ECORE_FILE_INTERVAL_MAX;
ecore_timer_interval_set(_timer, _interval);
for (l = _monitors; l;)
{
Ecore_File_Monitor *em = l;
l = ECORE_FILE_MONITOR(EINA_INLIST_GET(l)->next);
if (ECORE_FILE_MONITOR_POLL(em)->deleted)
ecore_file_monitor_del(em);
}
return ECORE_CALLBACK_RENEW;
}
static void
_ecore_file_monitor_poll_check(Ecore_File_Monitor *em)
{
int mtime;
mtime = ecore_file_mod_time(em->path);
if (mtime < ECORE_FILE_MONITOR_POLL(em)->mtime)
{
Ecore_File *l;
Ecore_File_Event event;
/* Notify all files deleted */
for (l = em->files; l;)
{
Ecore_File *f = l;
char buf[PATH_MAX];
l = (Ecore_File *) EINA_INLIST_GET(l)->next;
snprintf(buf, sizeof(buf), "%s/%s", em->path, f->name);
if (f->is_dir)
event = ECORE_FILE_EVENT_DELETED_DIRECTORY;
else
event = ECORE_FILE_EVENT_DELETED_FILE;
em->func(em->data, em, event, buf);
free(f->name);
free(f);
}
em->files = NULL;
em->func(em->data, em, ECORE_FILE_EVENT_DELETED_SELF, em->path);
_interval = ECORE_FILE_INTERVAL_MIN;
}
else
{
Ecore_File *l;
/* Check for changed files */
for (l = em->files; l;)
{
Ecore_File *f = l;
char buf[PATH_MAX];
int mt;
Ecore_File_Event event;
l = (Ecore_File *) EINA_INLIST_GET(l)->next;
snprintf(buf, sizeof(buf), "%s/%s", em->path, f->name);
mt = ecore_file_mod_time(buf);
if (mt < f->mtime)
{
if (f->is_dir)
event = ECORE_FILE_EVENT_DELETED_DIRECTORY;
else
event = ECORE_FILE_EVENT_DELETED_FILE;
em->func(em->data, em, event, buf);
em->files = (Ecore_File *) eina_inlist_remove(EINA_INLIST_GET(em->files), EINA_INLIST_GET(f));
free(f->name);
free(f);
_interval = ECORE_FILE_INTERVAL_MIN;
}
else if ((mt > f->mtime) && !(f->is_dir))
{
em->func(em->data, em, ECORE_FILE_EVENT_MODIFIED, buf);
_interval = ECORE_FILE_INTERVAL_MIN;
f->mtime = mt;
}
else
f->mtime = mt;
}
/* Check for new files */
if (ECORE_FILE_MONITOR_POLL(em)->mtime < mtime)
{
Eina_List *files;
Eina_List *fl;
char *file;
/* Files have been added or removed */
files = ecore_file_ls(em->path);
if (files)
{
/* Are we a directory? We should check first, rather than rely on null here*/
EINA_LIST_FOREACH(files, fl, file)
{
Ecore_File *f;
char buf[PATH_MAX];
Ecore_File_Event event;
if (_ecore_file_monitor_poll_checking(em, file))
continue;
snprintf(buf, sizeof(buf), "%s/%s", em->path, file);
f = calloc(1, sizeof(Ecore_File));
if (!f)
continue;
f->name = strdup(file);
f->mtime = ecore_file_mod_time(buf);
f->is_dir = ecore_file_is_dir(buf);
if (f->is_dir)
event = ECORE_FILE_EVENT_CREATED_DIRECTORY;
else
event = ECORE_FILE_EVENT_CREATED_FILE;
em->func(em->data, em, event, buf);
em->files = (Ecore_File *) eina_inlist_append(EINA_INLIST_GET(em->files), EINA_INLIST_GET(f));
}
while (files)
{
file = eina_list_data_get(files);
free(file);
files = eina_list_remove_list(files, files);
}
}
if (!ecore_file_is_dir(em->path))
em->func(em->data, em, ECORE_FILE_EVENT_MODIFIED, em->path);
_interval = ECORE_FILE_INTERVAL_MIN;
}
}
ECORE_FILE_MONITOR_POLL(em)->mtime = mtime;
}
static int
_ecore_file_monitor_poll_checking(Ecore_File_Monitor *em, char *name)
{
Ecore_File *l;
EINA_INLIST_FOREACH(em->files, l)
{
if (!strcmp(l->name, name))
return 1;
}
return 0;
}
#endif
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