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291 | with HAL; use HAL;
with Ada.Strings.Unbounded; use Ada.Strings.Unbounded;
with Ada.Containers.Bounded_Vectors;
package body USB_Testing.Output is
procedure New_Line (This : in out Text_Output) is
begin
This.Vect.Append (To_String (This.Current_Line));
This.Current_Line := To_Unbounded_String ("");
end New_Line;
---------
-- Put --
---------
procedure Put (This : in out Text_Output; Str : String) is
begin
Append (This.Current_Line, Str);
end Put;
--------------
-- Put_Line --
--------------
procedure Put_Line (This : in out Text_Output; Str : String) is
begin
This.Put (Str);
This.New_Line;
end Put_Line;
--------------
-- Hex_Dump --
--------------
procedure Hex_Dump (This : in out Text_Output;
Data : HAL.UInt8_Array;
Base_Addr : HAL.UInt64 := 0)
is
function UInt8_To_Char (Val : UInt8) return Character;
procedure Start_New_Line;
-- Hexdump format:
-- 0000_0000_0000_0000: 57 69 6B 69 70 65 64 69 61 2C 20 74 68 65 20 66 Wikipedia, the f
-- Addr : ^^^^^^^^^^^^^^^^^^^^
-- Hex : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-- ASCII: ^^^^^^^^^^^^^^^^^
Addr_Len : constant := 16 + 3 + 1;
Hex_Len : constant := 3 * 16;
ASCII_Len : constant := 1 + 16;
Str : String (1 .. Addr_Len + Hex_Len + ASCII_Len) := (others => ' ');
UInt4_To_Char : constant array (UInt4) of Character
:= (0 => '0',
1 => '1',
2 => '2',
3 => '3',
4 => '4',
5 => '5',
6 => '6',
7 => '7',
8 => '8',
9 => '9',
10 => 'A',
11 => 'B',
12 => 'C',
13 => 'D',
14 => 'E',
15 => 'F');
-------------------
-- UInt8_To_Char --
-------------------
function UInt8_To_Char (Val : UInt8) return Character is
begin
case Val is
when 0 .. 31 | 127 .. 255 =>
return '.';
when others =>
return Character'Val (Val);
end case;
end UInt8_To_Char;
Index : Natural;
Cnt : Natural;
Addr : Natural := 0;
--------------------
-- Start_New_Line --
--------------------
procedure Start_New_Line is
Addr_Val : UInt64 := UInt64 (Addr) + Base_Addr;
begin
-- Address
for X in reverse 1 .. 19 loop
if X in 5 | 10 | 15 then
Str (X) := '_';
else
Str (X) := UInt4_To_Char (UInt4 (Addr_Val and 16#0F#));
Addr_Val := Shift_Right (Addr_Val, 4);
end if;
end loop;
Str (20) := ':';
Str (21 .. Str'Last) := (others => ' ');
Cnt := 0;
Index := Str'First + Addr_Len;
end Start_New_Line;
begin
Start_New_Line;
for Elt of Data loop
-- Hex
Str (Index + 1) := UInt4_To_Char (UInt4 (Shift_Right (Elt, 4)));
Str (Index + 2) := UInt4_To_Char (UInt4 (Elt and 16#0F#));
-- ASCII
Str (Str'Last - (15 - Cnt)) := UInt8_To_Char (Elt);
Index := Index + 3;
Cnt := Cnt + 1;
Addr := Addr + 1;
if Cnt = 16 then
This.Put_Line (Str);
Start_New_Line;
end if;
end loop;
if Cnt /= 0 then
This.Put_Line (Str (Str'First .. Str'Last - (16 - Cnt)));
end if;
end Hex_Dump;
----------
-- Dump --
----------
function Dump (This : Text_Output) return AAA.Strings.Vector is
Result : AAA.Strings.Vector := This.Vect;
begin
if Length (This.Current_Line) /= 0 then
Result.Append (To_String (This.Current_Line));
end if;
return Result;
end Dump;
-----------
-- Equal --
-----------
function Equal (Expected, Actual : AAA.Strings.Vector) return Boolean is
begin
if Expected.Count /= Actual.Count then
return False;
end if;
for Index
in Expected.First_Index .. Expected.Last_Index
loop
if Expected.Element (Index) /= Actual.Element (Index) then
return False;
end if;
end loop;
return True;
end Equal;
----------
-- Diff --
----------
function Diff (A, B : AAA.Strings.Vector;
A_Name : String := "A";
B_Name : String := "B";
Skip_Header : Boolean := False)
return AAA.Strings.Vector
is
-- Tentative Myers diff implementation
Max : constant Integer := A.Count + B.Count;
type Action_Kind is (Keep, Insert, Remove);
type Action is record
Kind : Action_Kind;
Index : Positive;
end record;
package Action_Vectors is new
Ada.Containers.Bounded_Vectors (Positive, Action);
subtype History_Vector
is Action_Vectors.Vector (Ada.Containers.Count_Type (Max));
type Frontier is record
X : Integer := 0;
History : History_Vector;
end record;
V : array (-Max .. Max) of Frontier;
K : Integer;
X, Y : Integer := 0;
Go_Down : Boolean;
History : History_Vector;
Result : AAA.Strings.Vector;
begin
if A.First_Index /= 1 then
raise Program_Error;
elsif B.First_Index /= 1 then
raise Program_Error;
end if;
V (1).X := 0;
Main_Loop :
for D in 0 .. Max loop
K := -D;
while K <= D loop
Go_Down := (K = -D)
or else
((K /= D) and then (V (K - 1).X < V (K + 1).X));
if Go_Down then
X := V (K + 1).X;
History := V (K + 1).History;
else
X := V (K - 1).X + 1;
History := V (K - 1).History;
end if;
Y := X - K;
if Go_Down and then Y in 1 .. B.Count then
History.Append ((Insert, Y));
elsif X in 1 .. A.Count then
History.Append ((Remove, X));
end if;
while X in 0 .. A.Count - 1
and then
Y in 0 .. B.Count - 1
and then
A.Element (X + 1) = B.Element (Y + 1)
loop
X := X + 1;
Y := Y + 1;
History.Append ((Keep, X));
end loop;
if X >= A.Count and then Y >= B.Count then
exit Main_Loop;
else
V (K).X := X;
V (K).History := History;
end if;
K := K + 2;
end loop;
end loop Main_Loop;
if not Skip_Header then
Result.Append (String'("--- " & A_Name));
Result.Append (String'("+++ " & B_Name));
end if;
for Elt of History loop
case Elt.Kind is
when Keep =>
Result.Append (String'(" " & A.Element (Elt.Index)));
when Remove =>
Result.Append (String'("- " & A.Element (Elt.Index)));
when Insert =>
Result.Append (String'("+ " & B.Element (Elt.Index)));
end case;
end loop;
return Result;
end Diff;
end USB_Testing.Output;
|