ocarina/core/library.cpp

245 lines
4.7 KiB
C++

/**
* Copyright 2013 (c) Anna Schumaker.
*/
extern "C" {
#include <core/idle.h>
}
#include <core/library.h>
#include <core/print.h>
#include <glib.h>
class LibraryQueue : public queue {
private:
file f;
public:
LibraryQueue()
{
file_init(&f, "library.q", 0);
}
void save()
{
GSList *cur = q_sort;
int field;
if (!file_open(&f, OPEN_WRITE))
return;
file_writef(&f, "%u %u", q_flags, g_slist_length(q_sort));
while (cur) {
field = GPOINTER_TO_INT(cur->data);
file_writef(&f, " %u %d", abs(field) - 1, field > 0);
cur = g_slist_next(cur);
}
file_writef(&f, "\n");
file_close(&f);
}
void load()
{
unsigned int field;
int ascending;
unsigned int n;
if (!file_open(&f, OPEN_READ))
return;
file_readf(&f, "%u %u", &q_flags, &n);
for (unsigned int i = 0; i < n; i++) {
file_readf(&f, "%u %d", &field, &ascending);
queue_sort(this, (compare_t)(field + 1), (i == 0) ? true : false);
if (ascending == false)
queue_sort(this, (compare_t)(field + 1), false);
}
file_close(&f);
}
};
static LibraryQueue library_q;
struct scan_info {
struct library *library;
std :: string path;
};
static void scan_path(void *);
/*
* Scanning functions are here
*/
static void tag_track(struct library *library, const std::string &filepath)
{
struct track *track = track_add(library, filepath.c_str());
if (track)
queue_add(&library_q, track);
}
static void process_path(struct library *library, const std :: string &dir,
const std :: string &name)
{
struct scan_info *scan = new struct scan_info;
scan->library = library;
scan->path = dir + "/" + name;
if (g_file_test(scan->path.c_str(), G_FILE_TEST_IS_DIR) == true)
idle_schedule (scan_path, scan);
else {
tag_track(library, scan->path);
delete scan;
}
}
static void scan_path(void *data)
{
GDir *dir;
const char *name;
struct scan_info *scan = (struct scan_info *)data;
dir = g_dir_open(scan->path.c_str(), 0, NULL);
if (dir == NULL)
return;
name = g_dir_read_name(dir);
while (name != NULL) {
process_path(scan->library, scan->path, name);
name = g_dir_read_name(dir);
}
track_db_commit();
g_dir_close(dir);
delete scan;
}
static void validate_library(void *data)
{
struct library *library = (struct library *)data;
struct db_entry *dbe, *next;
struct track *track;
gchar *path;
db_for_each(dbe, next, track_db_get()) {
track = TRACK(dbe);
if (track->tr_library != library)
continue;
path = track_path(track);
if (g_file_test(path, G_FILE_TEST_EXISTS) == false) {
queue_remove_all(&library_q, track);
track_remove(track);
}
g_free(path);
}
}
/*
* External API begins here
*/
void collection_init(struct queue_ops *ops)
{
struct db_entry *track, *next;
queue_init(&library_q, Q_ENABLED | Q_REPEAT | Q_ADD_FRONT, ops);
db_for_each(track, next, track_db_get()) {
if (TRACK(track)->tr_library->li_enabled)
queue_add(&library_q, TRACK(track));
}
queue_unset_flag(&library_q, Q_ADD_FRONT);
library_q.load();
if (!library_q.q_sort) {
queue_sort(&library_q, COMPARE_ARTIST, true);
queue_sort(&library_q, COMPARE_YEAR, false);
queue_sort(&library_q, COMPARE_TRACK, false);
}
queue_set_flag(&library_q, Q_SAVE_SORT);
queue_set_flag(&library_q, Q_SAVE_FLAGS);
}
void collection :: save(struct queue *queue, enum queue_flags flag)
{
library_q.save();
}
struct library *collection_add(const gchar *path)
{
struct library *library = NULL;
if (g_file_test(path, G_FILE_TEST_IS_DIR) == false)
return library;
library = library_find(path);
if (library)
collection :: update(library);
return library;
}
void collection :: remove(struct library *library)
{
if (library) {
set_enabled(library, false);
track_remove_all(library);
library_remove(library);
}
}
void collection :: update(struct library *library)
{
struct scan_info *scan = new struct scan_info;
scan->library = library;
if (library) {
scan->path = library->li_path;
idle_schedule(validate_library, library);
idle_schedule(scan_path, scan);
}
}
void collection :: update_all()
{
struct db_entry *library, *next;
db_for_each(library, next, library_db_get())
update(LIBRARY(library));
}
void collection :: set_enabled(struct library *library, bool enabled)
{
struct db_entry *dbe, *next;
struct track *track;
if (!library || (library->li_enabled == enabled))
return;
library_set_enabled(library, enabled);
queue_set_flag(&library_q, Q_ADD_FRONT);
db_for_each(dbe, next, track_db_get()) {
track = TRACK(dbe);
if (track->tr_library == library) {
if (enabled)
queue_add(&library_q, track);
else
queue_remove_all(&library_q, track);
}
}
queue_unset_flag(&library_q, Q_ADD_FRONT);
queue_resort(&library_q);
}
queue *collection :: get_queue()
{
return &library_q;
}