DelphiCodeCoverage/Source/EmmaFileHelper.pas at master · DelphiCodeCoverage/DelphiCodeCoverage · GitHub

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(***********************************************************************)

(* Delphi Code Coverage *)

(* *)

(* A quick hack of a Code Coverage Tool for Delphi *)

(* by Christer Fahlgren and Nick Ring *)

(* *)

(* This Source Code Form is subject to the terms of the Mozilla Public *)

(* License, v. 2.0. If a copy of the MPL was not distributed with this *)

(* file, You can obtain one at http://mozilla.org/MPL/2.0/. *)

unit EmmaFileHelper;

interface

uses

System.SysUtils,

System.Types,

System.Classes;

type

TMultiBooleanArray = array of TBooleanDynArray;

TDataIO = class(TInterfacedObject, IInterface)

strict private

FFile: TStream;

protected

function ReverseInt64_Pure(const AValue: Int64): Int64;

function ReverseInt_Pure(const AValue: Integer): Integer; inline;

function ReverseWord(const AValue: Word): Word; inline;

property DataFile: TStream read FFile write FFile;

public

constructor Create(AFile: TStream);

end;

IEmmaDataInput = interface

['{4846A91D-E71E-4DDE-9F68-19CFA7060F84}']

function ReadInt64: Int64;

function ReadInteger: Integer;

function ReadByte: Byte;

function ReadBoolean: Boolean;

function ReadWord: Word;

function ReadUTF: string;

procedure ReadIntArray(var AIntArray: TIntegerDynArray);

function ReadBooleanArray: TBooleanDynArray;

end;

TEmmaDataInput = class(TDataIO, IEmmaDataInput)

public

function ReadInt64: Int64;

function ReadInteger: Integer;

function ReadByte: Byte;

function ReadBoolean: Boolean;

function ReadWord: Word;

function ReadUTF: string;

procedure ReadIntArray(var AIntArray: TIntegerDynArray);

function ReadBooleanArray: TBooleanDynArray;

end;

IEmmaDataOutput = interface

['{ACE23F4B-1BCD-466D-BE4B-2EA2812C807E}']

procedure WriteInt64(const AValue: Int64);

procedure WriteInteger(const AValue: Integer);

procedure WriteByte(const AValue: Byte);

procedure WriteBoolean(const AValue: Boolean);

procedure WriteWord(const AValue: Word);

procedure WriteUTF(const AValue: String);

procedure WriteIntArray(const AValues: TIntegerDynArray);

procedure WriteBooleanArray(const AValues: TBooleanDynArray);

end;

TEmmaDataOutput = class(TDataIO, IEmmaDataOutput)

public

procedure WriteInt64(const AValue: Int64);

procedure WriteInteger(const AValue: Integer);

procedure WriteByte(const AValue: Byte);

procedure WriteBoolean(const AValue: Boolean);

procedure WriteWord(const AValue: Word);

procedure WriteUTF(const AValue: String);

procedure WriteIntArray(const AValues: TIntegerDynArray);

procedure WriteBooleanArray(const AValues: TBooleanDynArray);

end;

EEmmaException = Exception;

function GetUtf8Length(const AValue: string): Integer;

function GetEntryLength(const AIntArray: TIntegerDynArray): Int64; overload;

function GetEntryLength(const ABoolArray: TBooleanDynArray): Int64; overload;

implementation

uses

{$IFDEF MSWINDOWS}

Winapi.WinSock

{$ELSE}

Posix.ArpaInet

{$ENDIF};

{$region 'Helpers'}

function GetUtf8Length(const AValue: string): Integer;

var

Str: RawByteString;

begin

Str := UTF8Encode(AValue);

Result := Length(Str) + SizeOf(Word);

end;

function GetEntryLength(const AIntArray: TIntegerDynArray): Int64;

begin

Result := SizeOf(Integer) + Length(AIntArray) * SizeOf(Integer);

end;

function GetEntryLength(const ABoolArray: TBooleanDynArray): Int64;

begin

Result := SizeOf(Integer) + Length(ABoolArray) * SizeOf(Boolean);

end;

{$endregion 'Helpers'}

{$region 'TDataIO'}

constructor TDataIO.Create(AFile: TStream);

begin

inherited Create;

FFile := AFile;

end;

function TDataIO.ReverseInt64_Pure(const AValue: Int64): Int64;

begin

Int64Rec(Result).Bytes[0] := Int64Rec(AValue).Bytes[7];

Int64Rec(Result).Bytes[1] := Int64Rec(AValue).Bytes[6];

Int64Rec(Result).Bytes[2] := Int64Rec(AValue).Bytes[5];

Int64Rec(Result).Bytes[3] := Int64Rec(AValue).Bytes[4];

Int64Rec(Result).Bytes[4] := Int64Rec(AValue).Bytes[3];

Int64Rec(Result).Bytes[5] := Int64Rec(AValue).Bytes[2];

Int64Rec(Result).Bytes[6] := Int64Rec(AValue).Bytes[1];

Int64Rec(Result).Bytes[7] := Int64Rec(AValue).Bytes[0];

end;

function TDataIO.ReverseInt_Pure(const AValue: Integer): Integer;

begin

Result := ntohl(AValue);

end;

function TDataIO.ReverseWord(const AValue: Word): Word;

begin

Result := ntohs(AValue);

end;

{$endregion 'TDataIO'}

{$region 'TDataInput'}

function TEmmaDataInput.ReadByte: Byte;

begin

DataFile.Read(Result, 1);

end;

function TEmmaDataInput.ReadBoolean: Boolean;

begin

Result := Boolean(ReadByte);

end;

function TEmmaDataInput.ReadUTF: string;

var

DataSize: Word;

RawData: RawByteString;

BytesRead: Integer;

begin

DataSize := ReadWord;

SetLength(RawData, DataSize);

BytesRead := DataFile.Read(RawData[1], DataSize);

if (DataSize <> BytesRead) then

begin

raise EEmmaException.Create('Reading string but EOF encountered');

end;

Result := UTF8ToString(RawData);

end;

procedure TEmmaDataInput.ReadIntArray(var AIntArray: TIntegerDynArray);

var

ArrayLength: Integer;

I: Integer;

begin

ArrayLength := ReadInteger;

SetLength(AIntArray, ArrayLength);

for I := 0 to ArrayLength - 1 do

begin

AIntArray[I] := ReadInteger;

end;

function TEmmaDataInput.ReadBooleanArray: TBooleanDynArray;

var

ArrayLength: Integer;

I: Integer;

begin

ArrayLength := ReadInteger;

SetLength(Result, ArrayLength);

for I := 0 to ArrayLength - 1 do

begin

Result[I] := ReadBoolean;

end;

function TEmmaDataInput.ReadInt64: Int64;

var

Int64Value: Int64;

BytesRead: Integer;

begin

BytesRead := DataFile.Read(Int64Value, SizeOf(Int64Value));

if (BytesRead <> SizeOf(Int64Value)) then

begin

raise EEmmaException.Create('Not enough bytes to read an Int64');

end;

Result := ReverseInt64_Pure(Int64Value);

end;

function TEmmaDataInput.ReadInteger: Integer;

var

IntValue: Integer;

BytesRead: Integer;

begin

BytesRead := DataFile.Read(IntValue, SizeOf(IntValue));

if (BytesRead <> SizeOf(IntValue)) then

begin

raise EEmmaException.Create('Not enough bytes to read an Integer');

end;

Result := ReverseInt_Pure(IntValue);

end;

function TEmmaDataInput.ReadWord: Word;

var

WordValue: Word;

BytesRead: Integer;

begin

BytesRead := DataFile.Read(WordValue, SizeOf(WordValue));

if (BytesRead <> SizeOf(WordValue)) then

begin

raise EEmmaException.Create('Not enough bytes to read a Word');

end;

Result := ReverseWord(WordValue);

end;

{$endregion 'TDataInput'}

{$region 'TDataOutput'}

procedure TEmmaDataOutput.WriteByte(const AValue: Byte);

begin

DataFile.Write(AValue, 1);

end;

procedure TEmmaDataOutput.WriteBoolean(const AValue: Boolean);

begin

WriteByte(Byte(AValue));

end;

procedure TEmmaDataOutput.WriteUTF(const AValue: string);

var

DataSize: Word;

RawData: RawByteString;

BytesWritten: Integer;

begin

RawData := UTF8Encode(AValue);

DataSize := Length(RawData);

WriteWord(DataSize);

BytesWritten := DataFile.Write(RawData[1], DataSize);

if (DataSize <> BytesWritten) then

begin

raise EEmmaException.Create('Writing string but not enough chars were written');

end;

procedure TEmmaDataOutput.WriteIntArray(const AValues: TIntegerDynArray);

var

I: Integer;

begin

WriteInteger(Length(AValues));

for I := 0 to High(AValues) do

begin

WriteInteger(AValues[I]);

end;

procedure TEmmaDataOutput.WriteBooleanArray(const AValues: TBooleanDynArray);

var

I: Integer;

begin

WriteInteger(Length(AValues));

for I := 0 to High(AValues) do

begin

WriteBoolean(AValues[I]);

end;

procedure TEmmaDataOutput.WriteInt64(const AValue: Int64);

var

RawData: Int64;

BytesWritten: Integer;

begin

RawData := ReverseInt64_Pure(AValue);

BytesWritten := DataFile.Write(RawData, SizeOf(RawData));

if (BytesWritten <> SizeOf(RawData)) then

begin

raise EEmmaException.Create('Not enough bytes written');

end;

procedure TEmmaDataOutput.WriteInteger(const AValue: Integer);

var

RawData: Integer;

BytesWritten: Integer;

begin

RawData := ReverseInt_Pure(AValue);

BytesWritten := DataFile.Write(RawData, SizeOf(RawData));

if (BytesWritten <> SizeOf(RawData)) then

begin

raise EEmmaException.Create('Not enough bytes written for an Integer');

end;

procedure TEmmaDataOutput.WriteWord(const AValue: Word);

var

RawData: Word;

BytesWritten: Integer;

begin

RawData := ReverseWord(AValue);

BytesWritten := DataFile.Write(RawData, SizeOf(RawData));

if (BytesWritten <> SizeOf(RawData)) then

begin

raise EEmmaException.Create('Not enough bytes written for a word');

end;

{$endregion 'TDataInput'}

end.

DelphiCodeCoverage/Source/EmmaFileHelper.pas at master · DelphiCodeCoverage/DelphiCodeCoverage · GitHub

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