current/Global/Functions.pas

unit Functions;

interface

uses TypeDefs, Classes;

function BoolToStr(bool: Boolean): String;
function Decode_Int(buffer: TByteData): LongWord;
function Encode_Int(input: LongWord): TByteData;
function Decode_Float(buffer: TByteData): Single;
function Encode_Float(input: Single): TByteData;
function IntToBin(Value: Byte): String;
function DataToBin(Data: TByteData): String;
function BinToInt(bin: String): Byte;
function MakeDatLink(FileID: Integer): Integer;

function ReadString(Stream: TStream; Offset: Integer): String;

function StringSmaller(string1, string2: String): Boolean;

function FormatNumber(Value: LongWord; Width: Byte; leadingzeros: Char): String;
function FormatFileSize(size: LongWord): String;
function CreateHexString(Data: TByteData; HexOnly: Boolean): String;
function DecodeHexString(hex: String): TByteData;
function GetWinFileName(Name: String): String;
//function GetExtractPath: String;

function Explode(_string: String; delimiter: Char): TStrings;


implementation

uses SysUtils, Math, StrUtils;

type
  TValueSwitcher = record
    case IsFloat: Boolean of
      True: (ValueFloat: Single);
      False: (ValueInt: LongWord);
  end;


function BoolToStr(bool: Boolean): String;
begin
  if bool then
    Result := 'true'
  else
    Result := 'false';
end;


function Decode_Int(buffer: TByteData): LongWord;
begin
  Result := buffer[0] + buffer[1] * 256 + buffer[2] * 256 * 256 + buffer[3] * 256 * 256 * 256;
end;


function Encode_Int(input: LongWord): TByteData;
begin
  SetLength(Result, 4);
  Result[0] := input mod 256;
  input     := input div 256;
  Result[1] := input mod 256;
  input     := input div 256;
  Result[2] := input mod 256;
  input     := input div 256;
  Result[3] := input mod 256;
end;


function Decode_Float(buffer: TByteData): Single;
var
  _valueswitcher: TValueSwitcher;
begin
  _valueswitcher.ValueInt := Decode_Int(buffer);
  Result := _valueswitcher.ValueFloat;
  if IsNAN(Result) then
    Result := 0.0;
end;


function Encode_Float(input: Single): TByteData;
var
  _valueswitcher: TValueSwitcher;
begin
  _valueswitcher.ValueFloat := input;
  Result := Encode_Int(_valueswitcher.ValueInt);
end;


function IntToBin(Value: Byte): String;
var
  i: Byte;
begin
  Result := '';
  for i := 7 downto 0 do
    Result := Result + IntToStr((Value shr i) and $01);
end;


function DataToBin(Data: TByteData): String;
var
  i, j:     Byte;
  singlebyte: Byte;
  bytepart: String;
begin
  SetLength(bytepart, 8);
  Result := '';
  for i := 0 to High(Data) do
  begin
    singlebyte := Data[i];
    for j := 7 downto 0 do
    begin
      bytepart[j + 1] := Char((singlebyte and $01) + 48);
      singlebyte      := singlebyte shr 1;
    end;
    Result := Result + bytepart + ' ';
  end;
end;


function BinToInt(bin: String): Byte;
var
  Add: Integer;
  i:   Byte;
begin
  Result := 0;
  if Length(bin) <> 8 then
    Exit;
  Add := 1;
  for i := 8 downto 1 do
  begin
    if not (bin[i] in ['0', '1']) then
      Exit;
    if bin[i] = '1' then
      Inc(Result, Add);
    Add := Add shl 1;
  end;
end;


function MakeDatLink(FileID: Integer): Integer;
begin
  Result := FileID * 256 + 1;
end;


function ReadString(Stream: TStream; Offset: Integer): String;
var
  i: Integer;
  c: Char;
begin
  if Assigned(Stream) then
  begin
    if Offset >= 0 then
    begin
      Result := '';
      Stream.Seek(Offset, soFromBeginning);
      repeat
        Stream.Read(c, 1);
        if Ord(c) > 0 then
          Result := Result + c;
      until Ord(c) = 0;
    end;
  end;
end;


function FormatNumber(Value: LongWord; Width: Byte; leadingzeros: Char): String;
begin
  Result := AnsiReplaceStr(Format('%' + IntToStr(Width) + 'u', [Value]), ' ', leadingzeros);
end;


function FormatFileSize(size: LongWord): String;
var
  floatformat: TFormatSettings;
begin
  floatformat.DecimalSeparator := '.';
  if size >= 1000 * 1024 * 1024 then
    Result := FloatToStrF(size / 1024 / 1024 / 1024, ffFixed, 5, 1, floatformat) + ' GB'
  else
    if size >= 1000 * 1024 then
      Result := FloatToStrF(size / 1024 / 1024, ffFixed, 5, 1, floatformat) + ' MB'
    else
      if size >= 1000 then
        Result := FloatToStrF(size / 1024, ffFixed, 5, 1, floatformat) + ' KB'
      else
        Result := IntToStr(size) + ' B';
end;


function CreateHexString(Data: TByteData; HexOnly: Boolean): String;
var
  string_build, ascii_version: String;
  i: Integer;
begin
  string_build  := '';
  ascii_version := '';
  for i := 0 to High(Data) do
  begin
    if not HexOnly then
      if (i mod 16) = 0 then
        string_build := string_build + '0x' + IntToHex(i, 6) + '  ';
    string_build := string_build + IntToHex(Data[i], 2);
    if not HexOnly then
    begin
      if Data[i] >= 32 then
        ascii_version := ascii_version + Chr(Data[i])
      else
        ascii_version := ascii_version + '.';
      if ((i + 1) mod 2) = 0 then
        string_build := string_build + #32;
      if ((i + 1) mod 16) = 0 then
      begin
        string_build  := string_build + #32 + ascii_version + CrLf;
        ascii_version := '';
      end;
    end;
  end;
  Result := string_build;
end;


function DecodeHexString(hex: String): TByteData;
var
  i: Integer;
begin
  SetLength(Result, Length(hex) div 2);
  for i := 0 to Length(Result) do
  begin
    Result[i] := 0;
    case UpCase(hex[1 + i * 2]) of
      '0'..'9':
        Result[i] := (Ord(UpCase(hex[1 + i * 2])) - 48) * 16;
      'A'..'F':
        Result[i] := (Ord(UpCase(hex[1 + i * 2])) - 55) * 16;
    end;
    case UpCase(hex[1 + i * 2 + 1]) of
      '0'..'9':
        Result[i] := Result[i] + (Ord(UpCase(hex[1 + i * 2 + 1])) - 48);
      'A'..'F':
        Result[i] := Result[i] + (Ord(UpCase(hex[1 + i * 2 + 1])) - 55);
    end;
  end;
end;


function StringSmaller(string1, string2: String): Boolean;
var
  i:   Integer;
  len: Integer;
begin
  len := Min(Length(string1), Length(string2));
  for i := 1 to len do
    if Ord(string1[i]) <> Ord(string2[i]) then
    begin
      Result := Ord(string1[i]) < Ord(string2[i]);
      Exit;
    end;
  Result := Length(string1) < Length(string2);
end;


function Explode(_string: String; delimiter: Char): TStrings;
var
  start, len: Word;
begin
  Result := TStringList.Create;
  start := 1;
  while PosEx(delimiter, _string, start) > 0 do
  begin
    len := PosEx(delimiter, _string, start) - start;
    Result.Add(MidStr(_string, start, len));
    start := start + len + 1;
  end;
  Result.Add(MidStr(_string, start, Length(_string) - start + 1));
end;


function GetWinFileName(Name: String): String;
begin
  Result := Name;
  Result := AnsiReplaceStr(Result, '\', '__');
  Result := AnsiReplaceStr(Result, '/', '__');
  Result := AnsiReplaceStr(Result, '>', '__');
  Result := AnsiReplaceStr(Result, '<', '__');
end;


end.
Revision:	245
Committed:	Sat Aug 18 15:51:42 2007 UTC (18 years, 2 months ago) by alloc
Content type:	text/x-pascal
File size:	7080 byte(s)
Log Message:
#	Content
1	unit Functions;
2
3	interface
4
5	uses TypeDefs, Classes;
6
7	function BoolToStr(bool: Boolean): String;
8	function Decode_Int(buffer: TByteData): LongWord;
9	function Encode_Int(input: LongWord): TByteData;
10	function Decode_Float(buffer: TByteData): Single;
11	function Encode_Float(input: Single): TByteData;
12	function IntToBin(Value: Byte): String;
13	function DataToBin(Data: TByteData): String;
14	function BinToInt(bin: String): Byte;
15	function MakeDatLink(FileID: Integer): Integer;
16
17	function ReadString(Stream: TStream; Offset: Integer): String;
18
19	function StringSmaller(string1, string2: String): Boolean;
20
21	function FormatNumber(Value: LongWord; Width: Byte; leadingzeros: Char): String;
22	function FormatFileSize(size: LongWord): String;
23	function CreateHexString(Data: TByteData; HexOnly: Boolean): String;
24	function DecodeHexString(hex: String): TByteData;
25	function GetWinFileName(Name: String): String;
26	//function GetExtractPath: String;
27
28	function Explode(_string: String; delimiter: Char): TStrings;
29
30
31	implementation
32
33	uses SysUtils, Math, StrUtils;
34
35	type
36	TValueSwitcher = record
37	case IsFloat: Boolean of
38	True: (ValueFloat: Single);
39	False: (ValueInt: LongWord);
40	end;
41
42
43
44	function BoolToStr(bool: Boolean): String;
45	begin
46	if bool then
47	Result := 'true'
48	else
49	Result := 'false';
50	end;
51
52
53	function Decode_Int(buffer: TByteData): LongWord;
54	begin
55	Result := buffer[0] + buffer[1] * 256 + buffer[2] * 256 * 256 + buffer[3] * 256 * 256 * 256;
56	end;
57
58
59	function Encode_Int(input: LongWord): TByteData;
60	begin
61	SetLength(Result, 4);
62	Result[0] := input mod 256;
63	input := input div 256;
64	Result[1] := input mod 256;
65	input := input div 256;
66	Result[2] := input mod 256;
67	input := input div 256;
68	Result[3] := input mod 256;
69	end;
70
71
72	function Decode_Float(buffer: TByteData): Single;
73	var
74	_valueswitcher: TValueSwitcher;
75	begin
76	_valueswitcher.ValueInt := Decode_Int(buffer);
77	Result := _valueswitcher.ValueFloat;
78	if IsNAN(Result) then
79	Result := 0.0;
80	end;
81
82
83	function Encode_Float(input: Single): TByteData;
84	var
85	_valueswitcher: TValueSwitcher;
86	begin
87	_valueswitcher.ValueFloat := input;
88	Result := Encode_Int(_valueswitcher.ValueInt);
89	end;
90
91
92	function IntToBin(Value: Byte): String;
93	var
94	i: Byte;
95	begin
96	Result := '';
97	for i := 7 downto 0 do
98	Result := Result + IntToStr((Value shr i) and $01);
99	end;
100
101
102	function DataToBin(Data: TByteData): String;
103	var
104	i, j: Byte;
105	singlebyte: Byte;
106	bytepart: String;
107	begin
108	SetLength(bytepart, 8);
109	Result := '';
110	for i := 0 to High(Data) do
111	begin
112	singlebyte := Data[i];
113	for j := 7 downto 0 do
114	begin
115	bytepart[j + 1] := Char((singlebyte and $01) + 48);
116	singlebyte := singlebyte shr 1;
117	end;
118	Result := Result + bytepart + ' ';
119	end;
120	end;
121
122
123	function BinToInt(bin: String): Byte;
124	var
125	Add: Integer;
126	i: Byte;
127	begin
128	Result := 0;
129	if Length(bin) <> 8 then
130	Exit;
131	Add := 1;
132	for i := 8 downto 1 do
133	begin
134	if not (bin[i] in ['0', '1']) then
135	Exit;
136	if bin[i] = '1' then
137	Inc(Result, Add);
138	Add := Add shl 1;
139	end;
140	end;
141
142
143	function MakeDatLink(FileID: Integer): Integer;
144	begin
145	Result := FileID * 256 + 1;
146	end;
147
148
149
150
151	function ReadString(Stream: TStream; Offset: Integer): String;
152	var
153	i: Integer;
154	c: Char;
155	begin
156	if Assigned(Stream) then
157	begin
158	if Offset >= 0 then
159	begin
160	Result := '';
161	Stream.Seek(Offset, soFromBeginning);
162	repeat
163	Stream.Read(c, 1);
164	if Ord(c) > 0 then
165	Result := Result + c;
166	until Ord(c) = 0;
167	end;
168	end;
169	end;
170
171
172
173	function FormatNumber(Value: LongWord; Width: Byte; leadingzeros: Char): String;
174	begin
175	Result := AnsiReplaceStr(Format('%' + IntToStr(Width) + 'u', [Value]), ' ', leadingzeros);
176	end;
177
178
179
180
181	function FormatFileSize(size: LongWord): String;
182	var
183	floatformat: TFormatSettings;
184	begin
185	floatformat.DecimalSeparator := '.';
186	if size >= 1000 * 1024 * 1024 then
187	Result := FloatToStrF(size / 1024 / 1024 / 1024, ffFixed, 5, 1, floatformat) + ' GB'
188	else
189	if size >= 1000 * 1024 then
190	Result := FloatToStrF(size / 1024 / 1024, ffFixed, 5, 1, floatformat) + ' MB'
191	else
192	if size >= 1000 then
193	Result := FloatToStrF(size / 1024, ffFixed, 5, 1, floatformat) + ' KB'
194	else
195	Result := IntToStr(size) + ' B';
196	end;
197
198
199
200
201	function CreateHexString(Data: TByteData; HexOnly: Boolean): String;
202	var
203	string_build, ascii_version: String;
204	i: Integer;
205	begin
206	string_build := '';
207	ascii_version := '';
208	for i := 0 to High(Data) do
209	begin
210	if not HexOnly then
211	if (i mod 16) = 0 then
212	string_build := string_build + '0x' + IntToHex(i, 6) + ' ';
213	string_build := string_build + IntToHex(Data[i], 2);
214	if not HexOnly then
215	begin
216	if Data[i] >= 32 then
217	ascii_version := ascii_version + Chr(Data[i])
218	else
219	ascii_version := ascii_version + '.';
220	if ((i + 1) mod 2) = 0 then
221	string_build := string_build + #32;
222	if ((i + 1) mod 16) = 0 then
223	begin
224	string_build := string_build + #32 + ascii_version + CrLf;
225	ascii_version := '';
226	end;
227	end;
228	end;
229	Result := string_build;
230	end;
231
232
233
234
235	function DecodeHexString(hex: String): TByteData;
236	var
237	i: Integer;
238	begin
239	SetLength(Result, Length(hex) div 2);
240	for i := 0 to Length(Result) do
241	begin
242	Result[i] := 0;
243	case UpCase(hex[1 + i * 2]) of
244	'0'..'9':
245	Result[i] := (Ord(UpCase(hex[1 + i * 2])) - 48) * 16;
246	'A'..'F':
247	Result[i] := (Ord(UpCase(hex[1 + i * 2])) - 55) * 16;
248	end;
249	case UpCase(hex[1 + i * 2 + 1]) of
250	'0'..'9':
251	Result[i] := Result[i] + (Ord(UpCase(hex[1 + i * 2 + 1])) - 48);
252	'A'..'F':
253	Result[i] := Result[i] + (Ord(UpCase(hex[1 + i * 2 + 1])) - 55);
254	end;
255	end;
256	end;
257
258
259
260
261	function StringSmaller(string1, string2: String): Boolean;
262	var
263	i: Integer;
264	len: Integer;
265	begin
266	len := Min(Length(string1), Length(string2));
267	for i := 1 to len do
268	if Ord(string1[i]) <> Ord(string2[i]) then
269	begin
270	Result := Ord(string1[i]) < Ord(string2[i]);
271	Exit;
272	end;
273	Result := Length(string1) < Length(string2);
274	end;
275
276
277
278	function Explode(_string: String; delimiter: Char): TStrings;
279	var
280	start, len: Word;
281	begin
282	Result := TStringList.Create;
283	start := 1;
284	while PosEx(delimiter, _string, start) > 0 do
285	begin
286	len := PosEx(delimiter, _string, start) - start;
287	Result.Add(MidStr(_string, start, len));
288	start := start + len + 1;
289	end;
290	Result.Add(MidStr(_string, start, Length(_string) - start + 1));
291	end;
292
293
294	function GetWinFileName(Name: String): String;
295	begin
296	Result := Name;
297	Result := AnsiReplaceStr(Result, '\', '__');
298	Result := AnsiReplaceStr(Result, '/', '__');
299	Result := AnsiReplaceStr(Result, '>', '__');
300	Result := AnsiReplaceStr(Result, '<', '__');
301	end;
302
303
304	end.