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with Ada.Containers.Vectors;
with Ada.Text_IO;
with CSV;
-- This source is licensed under Creative Commons CC0 v1.0.
--
-- To read the full text, see license.txt in the main directory of this repository
-- or go to https://creativecommons.org/publicdomain/zero/1.0/legalcode.txt
--
-- For a human readable summary, go to https://creativecommons.org/publicdomain/zero/1.0/
package body Candidates.Containers is
procedure Read_Candidates
(Filename : in String;
State : in State_Name;
Candidate_Data : out Candidate_Map)
is
package My_CSV is new CSV;
use Ada.Text_IO;
use type Ada.Containers.Count_Type;
use type SU.Unbounded_String;
Input_File : File_Type;
Current_Record : My_CSV.CSV_Record;
Current_Candidate : Candidate;
Next_ID : CandidateID := CandidateID'First;
begin
Open (Input_File, In_File, Filename);
Candidate_Data := Candidate_Maps.Empty_Map;
while not End_Of_File (Input_File) loop
Current_Record := My_CSV.Parse_Line (Get_Line (Input_File));
-- all the field numbers here correspond to how
-- AEC Senate candidate data is arranged in csv format
if Current_Record.Length = 25 and then
Current_Record.Element (2) = "S" and then
Current_Record.Element (3) = State_Name'Image (State)
then
Current_Candidate :=
(First_Name => Current_Record.Element (8),
Last_Name => Current_Record.Element (7),
Group => Current_Record.Element (5),
Group_Rank => Current_Record.Element (6),
Party => Current_Record.Element (9));
Candidate_Data.Insert (Next_ID, Current_Candidate);
Next_ID := Next_ID + 1;
end if;
end loop;
Close (Input_File);
end Read_Candidates;
-- these two types exist because I can't think of an easier
-- way to sort a Candidate_Map into the appropriate order at
-- the moment
type Cand_Sort_Data is record
Cand_ID : CandidateID;
Group : SU.Unbounded_String;
Group_Rank : SU.Unbounded_String;
end record;
package Cand_Sort_Data_Vectors is new Ada.Containers.Vectors
(Index_Type => Positive,
Element_Type => Cand_Sort_Data);
function "<"
(Left, Right : Cand_Sort_Data)
return Boolean
is
use type SU.Unbounded_String;
begin
if SU.Length (Left.Group) = SU.Length (Right.Group) then
if Left.Group = Right.Group then
if SU.Length (Left.Group_Rank) = SU.Length (Right.Group_Rank) then
return Left.Group_Rank < Right.Group_Rank;
else
return SU.Length (Left.Group_Rank) < SU.Length (Right.Group_Rank);
end if;
else
return Left.Group < Right.Group;
end if;
else
return SU.Length (Left.Group) < SU.Length (Right.Group);
end if;
end "<";
function Generate_Above
(Candidate_Data : in Cand_Sort_Data_Vectors.Vector)
return Above_Line_Ballot
is
use type Ada.Containers.Count_Type;
use type SU.Unbounded_String;
Result : Above_Line_Ballot := CandidateID_Map_Maps.Empty_Map;
Working_Map : CandidateID_Maps.Map;
Current_Group : SU.Unbounded_String;
Current_Index : Positive;
Next_ID, Working_ID : Positive;
begin
if Candidate_Data.Length = 0 then
return Result;
end if;
Next_ID := 1;
Current_Index := Candidate_Data.First_Index;
while Current_Index <= Candidate_Data.Last_Index loop
Current_Group := Candidate_Data.Element (Current_Index).Group;
-- the assumption is that the "UG" group is always last
-- a fairly safe assumption given alphabetical group order
-- but will break down should there be more than... 553 grouped candidates
exit when Current_Group = "UG";
Working_Map := CandidateID_Maps.Empty_Map;
Working_ID := 1;
loop
Working_Map.Insert (Working_ID, Candidate_Data.Element (Current_Index).Cand_ID);
Working_ID := Working_ID + 1;
Current_Index := Current_Index + 1;
exit when Current_Index > Candidate_Data.Last_Index or else
Current_Group /= Candidate_Data.Element (Current_Index).Group;
end loop;
Result.Insert (Next_ID, Working_Map);
Next_ID := Next_ID + 1;
end loop;
return Result;
end Generate_Above;
function Generate_Below
(Candidate_Data : in Cand_Sort_Data_Vectors.Vector)
return Below_Line_Ballot
is
Result : Below_Line_Ballot := CandidateID_Maps.Empty_Map;
Next_ID : Positive := 1;
begin
for Item of Candidate_Data loop
Result.Insert (Next_ID, Item.Cand_ID);
Next_ID := Next_ID + 1;
end loop;
return Result;
end Generate_Below;
procedure Generate_Ballots
(Candidate_Data : in Candidate_Map;
Above_Ballot : out Above_Line_Ballot;
Below_Ballot : out Below_Line_Ballot)
is
package Sorting is new Cand_Sort_Data_Vectors.Generic_Sorting;
My_Candidate_Data : Cand_Sort_Data_Vectors.Vector;
Working_Candidate : Candidate;
begin
My_Candidate_Data := Cand_Sort_Data_Vectors.Empty_Vector;
for Cursor in Candidate_Data.Iterate loop
Working_Candidate := Candidate_Maps.Element (Cursor);
My_Candidate_Data.Append
((Cand_ID => Candidate_Maps.Key (Cursor),
Group => Working_Candidate.Group,
Group_Rank => Working_Candidate.Group_Rank));
end loop;
Sorting.Sort (My_Candidate_Data);
Above_Ballot := Generate_Above (My_Candidate_Data);
Below_Ballot := Generate_Below (My_Candidate_Data);
end Generate_Ballots;
function To_String
(Above_Ballot : in Above_Line_Ballot)
return String
is
Result : SU.Unbounded_String := SU.To_Unbounded_String (0);
begin
for Group_Cursor in Above_Ballot.Iterate loop
SU.Append (Result, Integer'Image (CandidateID_Map_Maps.Key (Group_Cursor)) & ": ");
for Box of CandidateID_Map_Maps.Element (Group_Cursor) loop
SU.Append (Result, CandidateID'Image (Box) & " ");
end loop;
SU.Append (Result, ASCII.LF);
end loop;
return SU.To_String (Result);
end To_String;
function To_String
(Below_Ballot : in Below_Line_Ballot)
return String
is
Result : SU.Unbounded_String := SU.To_Unbounded_String (0);
begin
for Box of Below_Ballot loop
SU.Append (Result, CandidateID'Image (Box) & " ");
end loop;
return SU.To_String (Result);
end To_String;
end Candidates.Containers;
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