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with
Ada.Characters.Latin_1,
Ada.Directories,
Ada.Text_IO,
GNAT.Regpat,
GNATCOLL.JSON,
UnZip;
use
Ada.Text_IO;
package body Deck_IO is
package Latin renames Ada.Characters.Latin_1;
package FD renames Ada.Directories;
package Pat renames GNAT.Regpat;
package JS renames GNATCOLL.JSON;
function "+"
(S : in String)
return SU.Unbounded_String
renames SU.To_Unbounded_String;
function "-"
(US : in SU.Unbounded_String)
return String
renames SU.To_String;
procedure Finalize
(This : in out Deck_Handle) is
begin
if This.Opened then
SQLite3.Close (This.SQL_Handle);
FD.Delete_File (-This.Tempfile);
end if;
end Finalize;
function Generate_Temp_Name
return String
is
Handle : File_Type;
Filename : SU.Unbounded_String;
begin
Create (File => Handle);
Filename := +Name (Handle);
Close (Handle);
return -Filename;
end Generate_Temp_Name;
function Matches
(Models : in Model_Maps.Map;
Notes : in Note_Vectors.Vector)
return Boolean
is
use type Ada.Containers.Count_Type;
begin
for Note of Notes loop
if not Models.Contains (Note.Model) or else
Note.Fields.Length > Models.Element (Note.Model).Fields.Length
then
return False;
end if;
end loop;
return True;
end Matches;
procedure Read_Media_Map
(Filename : in String;
Media_Map : out Media_Maps.Map)
is
Temp : String := Generate_Temp_Name;
Input_Handle : File_Type;
Raw_Data : SU.Unbounded_String;
JSON_Data : JS.JSON_Value;
procedure Map_Iteration
(Name : in JS.UTF8_String;
Value : in JS.JSON_Value) is
begin
Media_Map.Insert (Media_ID (+Name), JS.Get (Value));
end Map_Iteration;
begin
UnZip.Extract (Filename, "media", Temp);
Open (Input_Handle, In_File, Temp);
while not End_Of_File (Input_Handle) loop
SU.Append (Raw_Data, Get_Line (Input_Handle) & Latin.LF);
end loop;
Close (Input_Handle);
FD.Delete_File (Temp);
JSON_Data := JS.Read (-Raw_Data);
JS.Map_JSON_Object (JSON_Data, Map_Iteration'Access);
end Read_Media_Map;
procedure Open_Database
(Filename : in String;
Deck : in out Deck_Handle)
is
Temp : String := Generate_Temp_Name;
begin
UnZip.Extract (Filename, "collection.anki2", Temp);
SQLite3.Open (Temp, Deck.SQL_Handle);
Deck.Opened := True;
Deck.Tempfile := +Temp;
end Open_Database;
function Is_Open
(Deck : in Deck_Handle)
return Boolean is
begin
return Deck.Opened;
end Is_Open;
procedure Close_Database
(Deck : in out Deck_Handle) is
begin
if Deck.Opened = False then
return;
end if;
SQLite3.Close (Deck.SQL_Handle);
Deck.Opened := False;
FD.Delete_File (-Deck.Tempfile);
Deck.Tempfile := +"";
end Close_Database;
procedure Extract_Field_IDs
(Value : in JS.JSON_Array;
FIDs : out Field_ID_Vectors.Vector)
is
Index : Positive;
Item : JS.JSON_Value;
Ordinal : Integer;
begin
Index := JS.Array_First (Value);
while JS.Array_Has_Element (Value, Index) loop
Item := JS.Array_Element (Value, Index);
Ordinal := JS.Get (Item, "ord") + 1;
if Ordinal > Integer (FIDs.Length) then
FIDs.Set_Length (Ada.Containers.Count_Type (Ordinal));
end if;
declare
Name : String := JS.Get (Item, "name");
begin
FIDs.Replace_Element (Field_Ordinal (Ordinal), Field_ID (+Name));
end;
Index := Index + 1;
end loop;
end Extract_Field_IDs;
procedure Regex_Fields
(Raw_Data : in JS.UTF8_String;
FIDs : out Field_ID_Vectors.Vector)
is
use type Pat.Match_Location;
Matches : Pat.Match_Array (0 .. 1);
Regexp : Pat.Pattern_Matcher := Pat.Compile ("{{(?:\w+:)?(\w+)}}", Pat.Single_Line);
Marker : Positive := Raw_Data'First;
begin
loop
Pat.Match (Regexp, Raw_Data, Matches, Marker);
exit when Matches (1) = Pat.No_Match;
declare
Item : String := Raw_Data (Matches (1).First .. Matches (1).Last);
begin
if Item /= "FrontSide" then
FIDs.Append (Field_ID (+Item));
end if;
end;
Marker := Matches (0).Last + 1;
end loop;
end Regex_Fields;
procedure Extract_Templates
(Value : in JS.JSON_Array;
TMPLs : out Template_Vectors.Vector)
is
Index : Positive;
Item : JS.JSON_Value;
Current_Tmpl : Template;
begin
Index := JS.Array_First (Value);
while JS.Array_Has_Element (Value, Index) loop
Item := JS.Array_Element (Value, Index);
Regex_Fields (JS.Get (Item, "qfmt"), Current_Tmpl.Question);
Regex_Fields (JS.Get (Item, "afmt"), Current_Tmpl.Answer);
TMPLs.Append (Current_Tmpl);
Current_Tmpl.Question.Clear;
Current_Tmpl.Answer.Clear;
Index := Index + 1;
end loop;
end Extract_Templates;
procedure Extract_Model
(Name : in JS.UTF8_String;
Value : in JS.JSON_Value;
Models : in out Model_Maps.Map)
is
Current_Model : Model;
begin
Extract_Field_IDs (JS.Get (Value, "flds"), Current_Model.Fields);
Extract_Templates (JS.Get (Value, "tmpls"), Current_Model.Templates);
Models.Insert (Model_ID (+Name), Current_Model);
end Extract_Model;
procedure Query_Models
(Deck : in out Deck_Handle;
Models : out Model_Maps.Map)
is
Statement : SQLite3.SQLite3_Statement;
Raw_Data : SU.Unbounded_String;
JSON_Data : JS.JSON_Value;
procedure JSON_Callback
(Name : in JS.UTF8_String;
Value : in JS.JSON_Value) is
begin
Extract_Model (Name, Value, Models);
end JSON_Callback;
begin
SQLite3.Prepare (Deck.SQL_Handle, "SELECT models FROM col", Statement);
SQLite3.Step (Statement, Deck.Status);
SQLite3.Column (Statement, 0, Raw_Data);
SQLite3.Finish (Statement);
JSON_Data := JS.Read (-Raw_Data);
JS.Map_JSON_Object (JSON_Data, JSON_Callback'Access);
end Query_Models;
procedure Query_Notes
(Deck : in out Deck_Handle;
Notes : out Note_Vectors.Vector)
is
begin
null;
end Query_Notes;
procedure Write_CSV
(Directory : in String;
Basename : in String;
Models : in Model_Maps.Map;
Notes : in Note_Vectors.Vector)
is
begin
null;
end Write_CSV;
procedure Write_FMD
(Directory : in String;
Basename : in String;
Models : in Model_Maps.Map;
Notes : in Note_Vectors.Vector;
Media : in Media_Maps.Map)
is
begin
null;
end Write_FMD;
end Deck_IO;
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