| 1 | UNIT Unit2_functions;
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| 2 | INTERFACE
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| 3 | USES Classes, SysUtils, StrUtils, Math, Unit3_data, Unit4_Exporters;
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| 4 |
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| 5 | FUNCTION LoadDatInfos(filename:String):Boolean;
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| 6 | FUNCTION LoadDatFile(fileid:LongWord):Tdata;
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| 7 | FUNCTION LoadDatFilePart(fileid,offset,size:LongWord; target:Pointer):Boolean;
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| 8 | FUNCTION LoadRawFilePart(address,size:LongWord; target:Pointer):Boolean;
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| 9 | FUNCTION FormatNumber(value:LongWord; width:Byte; leadingzeros:Char):String;
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| 10 | FUNCTION FormatFileSize(size:LongWord):String;
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| 11 | FUNCTION CreateHexString(data:Tdata; HexOnly:Boolean):String;
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| 12 | FUNCTION ExportFile(fileid:LongWord; convert:Boolean):Integer;
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| 13 | FUNCTION GetWinFileName(fileid:LongWord; substring:String):String;
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| 14 | FUNCTION GetExtractPath:String;
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| 15 |
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| 16 |
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| 17 |
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| 18 | IMPLEMENTATION
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| 19 |
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| 20 |
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| 21 | FUNCTION LoadDatInfos(filename:String):Boolean;
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| 22 | VAR i:LongWord;
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| 23 | dat_file:TFileStream;
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| 24 | BEGIN
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| 25 | Result:=True;
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| 26 | IF Length(filename)>0 THEN dat_file.Free;
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| 27 | dat_filename:=filename;
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| 28 | raw_filename:=MidStr(filename,1,Length(filename)-3)+'raw';
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| 29 | dat_file:=TFileStream.Create(filename, fmOpenRead);
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| 30 | dat_file.Read(dat_header,SizeOf(dat_header));
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| 31 | FOR i:=0 TO High(dat_header.Ident) DO
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| 32 | IF dat_header.Ident[i]<>header_ident1[i] THEN BEGIN
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| 33 | Result:=False;
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| 34 | Exit;
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| 35 | END;
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| 36 | { FOR i:=0 TO High(dat_header.Ident2) DO
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| 37 | IF dat_header.Ident2[i]<>header_ident2[i] THEN BEGIN
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| 38 | Result:=False;
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| 39 | Exit;
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| 40 | END;
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| 41 | }
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| 42 | SetLength(dat_filesmap,dat_header.Files);
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| 43 | SetLength(dat_files,dat_header.Files);
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| 44 | FOR i:=0 TO dat_header.Files-1 DO dat_file.Read(dat_filesmap[i],SizeOf(dat_filesmap[i]));
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| 45 | FOR i:=0 TO dat_header.Files-1 DO BEGIN
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| 46 | dat_files[i].Extension:=dat_filesmap[i].Extension;
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| 47 | dat_files[i].Extension:=ReverseString(dat_files[i].Extension);
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| 48 | dat_files[i].Size:=dat_filesmap[i].FileSize;
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| 49 | dat_files[i].FileType:=dat_filesmap[i].FileType;
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| 50 | dat_files[i].DatAddr:=dat_filesmap[i].DataAddr-8+dat_header.DataAddr;
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| 51 | IF (dat_filesmap[i].FileType AND $01)=0 THEN BEGIN
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| 52 | dat_file.Seek(dat_filesmap[i].NameAddr+dat_header.NamesAddr,soFromBeginning);
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| 53 | SetLength(dat_files[i].Name,100);
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| 54 | dat_file.Read(dat_files[i].Name[1],100);
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| 55 | dat_files[i].Name:=MidStr(dat_files[i].Name,1+4,Pos(#0,dat_files[i].Name)-1-4);
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| 56 | END ELSE BEGIN
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| 57 | dat_files[i].Name:='';
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| 58 | END;
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| 59 | dat_files[i].FileName:=FormatNumber(i,5,'0')+'-'+dat_files[i].Name+'.'+dat_files[i].Extension;
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| 60 | END;
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| 61 | dat_file.Seek($40+dat_header.Files*$14,soFromBeginning);
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| 62 | SetLength(dat_namedfilesmap,dat_header.NamedFiles);
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| 63 | FOR i:=0 TO dat_header.NamedFiles-1 DO dat_file.Read(dat_namedfilesmap[i],SizeOf(dat_namedfilesmap[i]));
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| 64 |
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| 65 | dat_file.Seek($40+dat_header.Files*$14+dat_header.NamedFiles*$8,soFromBeginning);
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| 66 | SetLength(dat_extensionsmap,dat_header.Extensions);
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| 67 | FOR i:=0 TO dat_header.Extensions-1 DO dat_file.Read(dat_extensionsmap[i],SizeOf(dat_extensionsmap[i]));
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| 68 |
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| 69 | dat_file.Free;
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| 70 | END;
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| 71 |
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| 72 |
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| 73 | FUNCTION LoadDatFile(fileid:LongWord):Tdata;
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| 74 | VAR dat_file:TFileStream;
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| 75 | BEGIN
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| 76 | dat_file:=TFileStream.Create(dat_filename, fmOpenRead);
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| 77 | dat_file.Seek(dat_files[fileid].DatAddr,soFromBeginning);
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| 78 | SetLength(Result,dat_files[fileid].Size);
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| 79 | dat_file.Read(Result[0],dat_files[fileid].Size);
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| 80 | dat_file.Free;
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| 81 | END;
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| 82 |
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| 83 |
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| 84 | FUNCTION LoadDatFilePart(fileid,offset,size:LongWord; target:Pointer):Boolean;
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| 85 | VAR dat_file:TFileStream;
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| 86 | BEGIN
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| 87 | dat_file:=TFileStream.Create(dat_filename, fmOpenRead);
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| 88 | Result:=True;
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| 89 | dat_file.Seek(dat_files[fileid].DatAddr+offset,soFromBeginning);
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| 90 | dat_file.Read(target^,size);
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| 91 | dat_file.Free;
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| 92 | END;
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| 93 |
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| 94 |
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| 95 | FUNCTION LoadRawFilePart(address,size:LongWord; target:Pointer):Boolean;
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| 96 | VAR
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| 97 | filestream:TFileStream;
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| 98 | BEGIN
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| 99 | Result:=True;
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| 100 | filestream:=TFileStream.Create(AnsiReplaceStr(dat_filename,'.dat','.raw'),fmOpenRead);
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| 101 | filestream.Seek(address,soFromBeginning);
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| 102 | filestream.Read(target^,size);
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| 103 | filestream.Free;
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| 104 | END;
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| 105 |
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| 106 |
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| 107 | FUNCTION FormatNumber(value:LongWord; width:Byte; leadingzeros:Char):String;
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| 108 | BEGIN
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| 109 | Result:=AnsiReplaceStr(Format('%'+IntToStr(width)+'u',[value]),' ',leadingzeros);
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| 110 | END;
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| 111 |
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| 112 |
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| 113 | FUNCTION FormatFileSize(size:LongWord):String;
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| 114 | BEGIN
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| 115 | IF size>=1024*1024*1024 THEN BEGIN
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| 116 | Result:=FloatToStrF(size/1024/1024/1024,ffFixed,5,1)+' GB';
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| 117 | END ELSE BEGIN
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| 118 | IF size>=1024*1024 THEN BEGIN
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| 119 | Result:=FloatToStrF(size/1024/1024,ffFixed,5,1)+' MB';
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| 120 | END ELSE BEGIN
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| 121 | IF size>=1024 THEN BEGIN
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| 122 | Result:=FloatToStrF(size/1024,ffFixed,5,1)+' KB';
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| 123 | END ELSE BEGIN
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| 124 | Result:=IntToStr(size)+' B';
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| 125 | END;
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| 126 | END;
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| 127 | END;
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| 128 | END;
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| 129 |
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| 130 |
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| 131 | FUNCTION CreateHexString(data:Tdata; HexOnly:Boolean):String;
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| 132 | VAR
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| 133 | string_build,ascii_version:String;
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| 134 | i:LongWord;
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| 135 | BEGIN
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| 136 | string_build:='';
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| 137 | ascii_version:='';
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| 138 | FOR i:=0 TO High(data) DO BEGIN
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| 139 | IF NOT HexOnly THEN
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| 140 | IF (i MOD 16)=0 THEN
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| 141 | string_build:=string_build+'0x'+IntToHex(i,6)+' ';
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| 142 | string_build:=string_build+IntToHex(data[i],2);
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| 143 | IF NOT HexOnly THEN BEGIN
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| 144 | IF data[i]>=32 THEN ascii_version:=ascii_version+Chr(data[i])
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| 145 | ELSE ascii_version:=ascii_version+'.';
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| 146 | IF ((i+1) MOD 2)=0 THEN string_build:=string_build+#32;
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| 147 | IF ((i+1) MOD 16)=0 THEN BEGIN
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| 148 | string_build:=string_build+#32+ascii_version+CrLf;
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| 149 | ascii_version:='';
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| 150 | END;
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| 151 | END;
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| 152 | END;
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| 153 | Result:=string_build;
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| 154 | END;
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| 155 |
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| 156 |
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| 157 | FUNCTION ExportFile(fileid:LongWord; convert:Boolean):Integer;
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| 158 | VAR
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| 159 | i:Byte;
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| 160 | BEGIN
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| 161 | Result:=export_noerror;
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| 162 |
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| 163 | ExportDefFileHeader(fileid);
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| 164 |
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| 165 | IF (dat_files[fileid].FileType AND $02)=0 THEN BEGIN
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| 166 | ExportDatFile(fileid);
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| 167 |
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| 168 | FOR i:=1 TO Length(ExportHandlers)+1 DO BEGIN
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| 169 | IF i<=Length(ExportHandlers) THEN BEGIN
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| 170 | IF ExportHandlers[i].Ext=dat_files[fileid].Extension THEN BEGIN
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| 171 | IF ExportHandlers[i].needed THEN BEGIN
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| 172 | CASE ExportHandlers[i].Handler(fileid,convert) OF
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| 173 | 0: Result:=0;
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| 174 | ELSE
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| 175 | Result:=export_handlererror;
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| 176 | END;
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| 177 | END;
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| 178 | Break;
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| 179 | END;
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| 180 | END ELSE BEGIN
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| 181 | Result:=export_nohandler;
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| 182 | END;
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| 183 | END;
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| 184 | END;
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| 185 | END;
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| 186 |
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| 187 |
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| 188 | FUNCTION GetWinFileName(fileid:LongWord; substring:String):String;
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| 189 | VAR
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| 190 | name:String;
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| 191 | BEGIN
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| 192 | name:=dat_files[fileid].Name;
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| 193 | name:=AnsiReplaceStr(name,'\','__');
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| 194 | name:=AnsiReplaceStr(name,'/','__');
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| 195 | name:=AnsiReplaceStr(name,'>','__');
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| 196 | name:=AnsiReplaceStr(name,'<','__');
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| 197 | Result:=FormatNumber(fileid,5,'0')+'-'+name+'.'+substring+'.'+dat_files[fileid].Extension;
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| 198 | END;
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| 199 |
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| 200 | FUNCTION GetExtractPath:String;
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| 201 | BEGIN
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| 202 | Result:=ExtractFilePath(dat_filename)+'\extracted_'+ExtractFileName(dat_filename);
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| 203 | END;
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| 204 |
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| 205 |
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| 206 | END.
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