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-- Ada Web Server --
-- --
-- Copyright (C) 2000-2014, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify --
-- it under terms of the GNU General Public License as published by the --
-- Free Software Foundation; either version 3, or (at your option) any --
-- later version. This library is distributed in the hope that it will be --
-- useful, but WITHOUT ANY WARRANTY; without even the implied warranty of --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are --
-- granted additional permissions described in the GCC Runtime Library --
-- Exception, version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
------------------------------------------------------------------------------
pragma Ada_2012;
with Ada.Strings.Unbounded;
private with Ada.Containers.Indefinite_Ordered_Maps;
private with Ada.Containers.Indefinite_Vectors;
private with Ada.Containers.Vectors;
package AWS.Containers.Tables is
use Ada.Strings.Unbounded;
type Table_Type is tagged private;
Empty_Table : constant Table_Type;
type Element (Name_Length, Value_Length : Natural) is record
Name : String (1 .. Name_Length);
Value : String (1 .. Value_Length);
end record;
-- Data type to store name/value pair retrieved from a Table_Type
Null_Element : constant Element;
type VString_Array is array (Positive range <>) of Unbounded_String;
function Count (Table : Table_Type) return Natural;
-- Returns the number of item in Table
function Name_Count (Table : Table_Type) return Natural;
-- Returns the number of unique key name in Table
function Case_Sensitive (Table : Table_Type) return Boolean with Inline;
-- Returns case sensitivity flag of the Table
function Count (Table : Table_Type; Name : String) return Natural;
-- Returns the number of value for Key Name in Table. It returns
-- 0 if Key does not exist.
function Exist (Table : Table_Type; Name : String) return Boolean;
-- Returns True if Key exist in Table
function Get
(Table : Table_Type;
Name : String;
N : Positive := 1) return String
with Post => (if N > Count (Table, Name) then Get'Result'Length = 0);
-- Returns the Nth value associated with Key into Table. Returns
-- the emptry string if key does not exist.
function Get_Name
(Table : Table_Type; N : Positive := 1) return String
with Post => (if N > Count (Table) then Get_Name'Result'Length = 0);
-- Returns the Nth Name in Table or the empty string if there is
-- no parameter with this number.
function Get_Value
(Table : Table_Type; N : Positive := 1) return String
with Post => (if N > Count (Table) then Get_Value'Result'Length = 0);
-- Returns the Nth Value in Table or the empty string if there is
-- no parameter with this number.
function Get (Table : Table_Type; N : Positive) return Element with
Post => (if N > Count (Table)
then Get'Result = Null_Element
else Get'Result /= Null_Element);
-- Returns N'th name/value pair. Returns Null_Element if there is no
-- such item in the table.
function Get_Names (Table : Table_Type) return VString_Array
with Post => Get_Names'Result'Length = Name_Count (Table);
-- Returns sorted array of unique key names
function Get_Values
(Table : Table_Type; Name : String) return VString_Array
with Post => Get_Values'Result'Length = Count (Table, Name);
-- Returns all values for the specified parameter key name
generic
with procedure Process (Name, Value : String);
procedure Generic_Iterate_Names
(Table : Table_Type; Separator : String);
-- Iterates over all names in the table.
-- All Values of the same name are separated by Separator string.
procedure Iterate_Names
(Table : Table_Type;
Separator : String;
Process : not null access procedure (Name, Value : String));
function Union
(Left : Table_Type;
Right : Table_Type;
Unique : Boolean) return Table_Type;
-- Concatenates two tables, If Unique is True do not add Right container
-- element into result when element with the same name already exists in
-- the Left container.
private
Null_Element : constant Element := (0, 0, "", "");
type Key_Positive is new Positive;
package Name_Indexes is
new Ada.Containers.Vectors (Positive, Key_Positive);
subtype Name_Index_Table is Name_Indexes.Vector;
package Data_Table is
new Ada.Containers.Indefinite_Vectors (Key_Positive, Element);
package Index_Table is new Ada.Containers.Indefinite_Ordered_Maps
(String, Name_Index_Table, "<", Name_Indexes."=");
-- Index of the Element_Array
subtype Index_Table_Type is Index_Table.Map;
type Table_Type is tagged record
Case_Sensitive : Boolean := True;
Index : Index_Table.Map;
-- Index to find appropriate Name/Value pairs in Data by the name
Data : Data_Table.Vector;
-- Ordered array of name and value pairs
end record;
Empty_Table : constant Table_Type :=
(True, Index_Table.Empty_Map, Data_Table.Empty_Vector);
function Normalize_Name
(Name : String; To_Upper : Boolean) return String;
-- Returns Name in upper case if To_Upper is set to True and it returns
-- Name unchanged otherwise.
end AWS.Containers.Tables;
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