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return N;
end if;
while N mod X = N loop
X := X / 2;
end loop;
return N mod X;
end Remove_Leading_Binary_1;
begin -- Vine_to_tree
Leaf_Count := Remove_Leading_Binary_1 (Size + 1);
Compression (Root, Leaf_Count); -- create deepest leaves
-- Use Perfect_leaves instead for a perfectly balanced tree
Size := Size - Leaf_Count;
while Size > 1 loop
Compression (Root, Size / 2);
Size := Size / 2;
end loop;
end Vine_To_Tree;
procedure Rebalance (Root : in out P_Dir_Node) is
-- Rebalance the binary search tree with root "root.all",
-- with the result also rooted at "root.all".
-- Uses the Tree_to_vine and Vine_to_tree procedures
Pseudo_Root : P_Dir_Node;
Size : Integer;
begin
Pseudo_Root := new Dir_Node (Name_Len => 0);
Pseudo_Root.Right := Root;
Tree_To_Vine (Pseudo_Root, Size);
Vine_To_Tree (Pseudo_Root, Size);
Root := Pseudo_Root.Right;
Dispose (Pseudo_Root);
end Rebalance;
end Binary_Tree_Rebalancing;
-- 19-Jun-2001: Enhanced file name identification
-- a) when case insensitive -> all UPPER (current)
-- b) '\' and '/' identified -> all '/' (new)
function Normalize (S : String; Case_Sensitive : Boolean) return String is
Sn : String := (if Case_Sensitive then S else Ada.Characters.Handling.To_Upper (S));
begin
for I in Sn'Range loop
if Sn (I) = '\' then
Sn (I) := '/';
end if;
end loop;
return Sn;
end Normalize;
function Get_Node (Info : in Zip_Info; Name : in String) return P_Dir_Node is
Aux : P_Dir_Node := Info.Dir_Binary_Tree;
Up_Name : constant String := Normalize (Name, Info.Case_Sensitive);
begin
while Aux /= null loop
if Up_Name > Aux.Dico_Name then
Aux := Aux.Right;
elsif Up_Name < Aux.Dico_Name then
Aux := Aux.Left;
else -- entry found !
return Aux;
end if;
end loop;
return null;
end Get_Node;
Boolean_To_Encoding : constant array (Boolean) of Zip_Name_Encoding :=
(False => IBM_437, True => UTF_8);
-------------------------------------------------------------
-- Load Zip_info from a stream containing the .zip archive --
-------------------------------------------------------------
procedure Load
(Info : out Zip_Info;
From : in out DCF.Streams.Root_Zipstream_Type'Class;
Case_Sensitive : in Boolean := False)
is
procedure Insert
(Dico_Name : String; -- UPPER if case-insensitive search
File_Name : String;
File_Index : DCF.Streams.Zs_Index_Type;
Comp_Size, Uncomp_Size : File_Size_Type;
Crc_32 : Unsigned_32;
Date_Time : Time;
Method : Pkzip_Method;
Name_Encoding : Zip_Name_Encoding;
Read_Only : Boolean;
Encrypted_2_X : Boolean;
Root_Node : in out P_Dir_Node)
is
procedure Insert_Into_Tree (Node : in out P_Dir_Node) is
begin
if Node = null then
Node :=
new Dir_Node'
((Name_Len => File_Name'Length,
Left => null,
Right => null,