pdf: Rename mupdf directory.

1 files changed, 224 insertions, 0 deletions

diff --git a/pdf/pdf_store.c b/pdf/pdf_store.c
new file mode 100644
index 00000000..d6be2088
--- /dev/null
+++ b/pdf/pdf_store.c
@@ -0,0 +1,224 @@
+#include "fitz.h"
+#include "mupdf.h"
+
+typedef struct pdf_item_s pdf_item;
+
+struct pdf_item_s
+{
+	void *dropfunc;
+	fz_obj *key;
+	void *val;
+	int age;
+	pdf_item *next;
+};
+
+struct refkey
+{
+	void *dropfunc;
+	int num;
+	int gen;
+};
+
+struct pdf_store_s
+{
+	fz_hashtable *hash;	/* hash for num/gen keys */
+	pdf_item *root;		/* linked list for everything else */
+};
+
+pdf_store *
+pdf_newstore(void)
+{
+	pdf_store *store;
+	store = fz_malloc(sizeof(pdf_store));
+	store->hash = fz_newhash(4096, sizeof(struct refkey));
+	store->root = nil;
+	return store;
+}
+
+void
+pdf_storeitem(pdf_store *store, void *keepfunc, void *dropfunc, fz_obj *key, void *val)
+{
+	pdf_item *item;
+
+	if (!store)
+		return;
+
+	item = fz_malloc(sizeof(pdf_item));
+	item->dropfunc = dropfunc;
+	item->key = fz_keepobj(key);
+	item->val = ((void*(*)(void*))keepfunc)(val);
+	item->age = 0;
+	item->next = nil;
+
+	if (fz_isindirect(key))
+	{
+		struct refkey refkey;
+		pdf_logrsrc("store item (%d %d R) ptr=%p\n", fz_tonum(key), fz_togen(key), val);
+		refkey.dropfunc = dropfunc;
+		refkey.num = fz_tonum(key);
+		refkey.gen = fz_togen(key);
+		fz_hashinsert(store->hash, &refkey, item);
+	}
+	else
+	{
+		pdf_logrsrc("store item (...) = %p\n", val);
+		item->next = store->root;
+		store->root = item;
+	}
+}
+
+void *
+pdf_finditem(pdf_store *store, void *dropfunc, fz_obj *key)
+{
+	struct refkey refkey;
+	pdf_item *item;
+
+	if (!store)
+		return nil;
+
+	if (key == nil)
+		return nil;
+
+	if (fz_isindirect(key))
+	{
+		refkey.dropfunc = dropfunc;
+		refkey.num = fz_tonum(key);
+		refkey.gen = fz_togen(key);
+		item = fz_hashfind(store->hash, &refkey);
+		if (item)
+		{
+			item->age = 0;
+			return item->val;
+		}
+	}
+	else
+	{
+		for (item = store->root; item; item = item->next)
+		{
+			if (item->dropfunc == dropfunc && !fz_objcmp(item->key, key))
+			{
+				item->age = 0;
+				return item->val;
+			}
+		}
+	}
+
+	return nil;
+}
+
+void
+pdf_removeitem(pdf_store *store, void *dropfunc, fz_obj *key)
+{
+	struct refkey refkey;
+	pdf_item *item, *prev, *next;
+
+	if (fz_isindirect(key))
+	{
+		refkey.dropfunc = dropfunc;
+		refkey.num = fz_tonum(key);
+		refkey.gen = fz_togen(key);
+		item = fz_hashfind(store->hash, &refkey);
+		if (item)
+		{
+			fz_hashremove(store->hash, &refkey);
+			((void(*)(void*))item->dropfunc)(item->val);
+			fz_dropobj(item->key);
+			fz_free(item);
+		}
+	}
+	else
+	{
+		prev = nil;
+		for (item = store->root; item; item = next)
+		{
+			next = item->next;
+			if (item->dropfunc == dropfunc && !fz_objcmp(item->key, key))
+			{
+				if (!prev)
+					store->root = next;
+				else
+					prev->next = next;
+				((void(*)(void*))item->dropfunc)(item->val);
+				fz_dropobj(item->key);
+				fz_free(item);
+			}
+			else
+				prev = item;
+		}
+	}
+}
+
+void
+pdf_agestore(pdf_store *store, int maxage)
+{
+	struct refkey *refkey;
+	pdf_item *item, *prev, *next;
+	int i;
+
+	for (i = 0; i < fz_hashlen(store->hash); i++)
+	{
+		refkey = fz_hashgetkey(store->hash, i);
+		item = fz_hashgetval(store->hash, i);
+		if (item && ++item->age > maxage)
+		{
+			fz_hashremove(store->hash, refkey);
+			((void(*)(void*))item->dropfunc)(item->val);
+			fz_dropobj(item->key);
+			fz_free(item);
+			i--; /* items with same hash may move into place */
+		}
+	}
+
+	prev = nil;
+	for (item = store->root; item; item = next)
+	{
+		next = item->next;
+		if (++item->age > maxage)
+		{
+			if (!prev)
+				store->root = next;
+			else
+				prev->next = next;
+			((void(*)(void*))item->dropfunc)(item->val);
+			fz_dropobj(item->key);
+			fz_free(item);
+		}
+		else
+			prev = item;
+	}
+}
+
+void
+pdf_freestore(pdf_store *store)
+{
+	pdf_agestore(store, 0);
+	fz_freehash(store->hash);
+	fz_free(store);
+}
+
+void
+pdf_debugstore(pdf_store *store)
+{
+	pdf_item *item;
+	pdf_item *next;
+	struct refkey *refkey;
+	int i;
+
+	printf("-- resource store contents --\n");
+
+	for (i = 0; i < fz_hashlen(store->hash); i++)
+	{
+		refkey = fz_hashgetkey(store->hash, i);
+		item = fz_hashgetval(store->hash, i);
+		if (item)
+			printf("store[%d] (%d %d R) = %p\n", i, refkey->num, refkey->gen, item->val);
+	}
+
+	for (item = store->root; item; item = next)
+	{
+		next = item->next;
+		printf("store[*] ");
+		fz_debugobj(item->key);
+		printf(" = %p\n", item->val);
+	}
+}