Anna Schumaker
e1f13a7ef4
The readd(), readu(), and readhu() functions are all used to read various forms of integers. The readl() and readw() are for reading either lines or individual whitespace-delimited words Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>
123 lines
2.4 KiB
C
123 lines
2.4 KiB
C
/*
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* Copyright 2014 (c) Anna Schumaker.
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*/
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#include <core/string.h>
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#include <core/tags/library.h>
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#define LIBRARY_DB_MIN 0 /* Ocarina 6.0 */
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static struct database library_db;
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static struct library *__library_alloc(gchar *path)
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{
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struct library *library = g_malloc(sizeof(struct library));
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dbe_init(&library->li_dbe, library);
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library->li_path = path;
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library->li_playlist = NULL;
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return library;
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}
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static struct db_entry *library_alloc(const gchar *path, unsigned int index)
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{
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return &__library_alloc(g_strdup(path))->li_dbe;
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}
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static void library_free(struct db_entry *dbe)
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{
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g_free(LIBRARY(dbe));
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}
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static gchar *library_key(struct db_entry *dbe)
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{
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return LIBRARY(dbe)->li_path;
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}
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static struct db_entry *library_read(struct file *file, unsigned int index)
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{
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gchar *path;
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/* Old "enabled" flag */
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if (file_version(file) == 0)
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file_readd(file);
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path = file_readl(file);
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return &__library_alloc(path)->li_dbe;
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}
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static void library_write(struct file *file, struct db_entry *dbe)
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{
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file_writef(file, "%s", LIBRARY(dbe)->li_path);
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}
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static const struct db_ops library_ops = {
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.dbe_alloc = library_alloc,
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.dbe_free = library_free,
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.dbe_key = library_key,
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.dbe_read = library_read,
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.dbe_write = library_write,
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};
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void library_db_init()
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{
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db_init(&library_db, "library.db", true, &library_ops, LIBRARY_DB_MIN);
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db_load(&library_db);
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}
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void library_db_deinit()
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{
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db_deinit(&library_db);
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}
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bool library_db_defrag()
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{
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return db_defrag(&library_db);
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}
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const struct database *library_db_get()
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{
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return &library_db;
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}
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struct library *library_find(const gchar *path)
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{
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struct library *library = library_lookup(path);
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if (library)
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return library;
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return LIBRARY(db_insert(&library_db, path));
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}
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struct library *library_lookup(const gchar *path)
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{
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struct db_entry *dbe, *next;
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db_for_each(dbe, next, &library_db) {
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if (string_is_subdir(path, LIBRARY(dbe)->li_path))
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return LIBRARY(dbe);
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}
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return NULL;
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}
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struct library *library_get(const unsigned int index)
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{
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return LIBRARY(db_at(&library_db, index));
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}
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void library_remove(struct library *library)
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{
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if (library)
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db_remove(&library_db, &library->li_dbe);
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}
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gchar *library_file(struct library *library, const gchar *path)
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{
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return g_strdup_printf("%s/%s", library->li_path, path);
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}
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#ifdef CONFIG_TESTING
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const struct db_ops *test_library_ops() { return &library_ops; }
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#endif /* CONFIG_TESTING */
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