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unit date2dec;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
StdCtrls, Buttons, ComCtrls
, LazFileUtils //required for ExtractFileNameOnly
;
type
{ TForm10 }
TForm10 = class(TForm)
Memo1: TMemo;
OpenDialog1: TOpenDialog;
SourceFileButton: TBitBtn;
SourceFileEdit: TEdit;
StartButton: TButton;
StatusBar1: TStatusBar;
procedure FormCreate(Sender: TObject);
procedure SourceFileButtonClick(Sender: TObject);
procedure StartButtonClick(Sender: TObject);
private
public
end;
var
Form10: TForm10;
implementation
uses
Unit1
, strutils
, appsettings
, dateutils //Required to convert logged UTC string to TDateTime
;
var
SourcePathFile:String;
subfix: ansistring; //Used for time zone conversions
{ TForm10 }
procedure TForm10.SourceFileButtonClick(Sender: TObject);
begin
OpenDialog1.InitialDir:=RemoveMultiSlash(appsettings.LogsDirectory);
if OpenDialog1.Execute then begin
SourcePathFile:=OpenDialog1.FileName;
SourceFileEdit.Text:=SourcePathFile;
end;
end;
procedure TForm10.FormCreate(Sender: TObject);
begin
end;
{ Convert file and write to the outputfile.}
procedure TForm10.StartButtonClick(Sender: TObject);
Var
Infile: TStringList;
pieces: TStringList;
OutFile: TextFile;
ComposeString: String;
OutputPathFileName, SourceFileName:String;
WorkingPath, OutputPath:String;
WriteAllowable: Boolean = True; //Allow output file to be written or not.
s: String; //Temporary string
i:Integer;//Counter
UTCRecord :TDateTime;
LocalRecord :TDateTime;
Begin
Infile := TStringList.Create;
pieces := TStringList.Create;
SourceFileName:=SourcePathFile;
WorkingPath:=RemoveMultiSlash(SourcePathFile + DirectorySeparator);
OutputPath:=ExtractFilePath(SourcePathFile);
OutputPathFileName:=RemoveMultiSlash(WorkingPath+'JDUTDEC' + DirectorySeparator);
{ So far there are no conditions to prevent writing files.
The output directory either already exists, or has been created.
The output files will overwrite previous output files.}
WriteAllowable:=True;
if WriteAllowable then begin
{ Process the file }
try
{Start reading file.}
{ Define Input file. }
SourceFileName:= ExtractFileName(SourcePathFile);
{ Define Output file. }
OutputPathFileName:=OutputPath+LazFileUtils.ExtractFileNameWithoutExt(SourceFileName)+'_JDUTDEC.dat';
AssignFile(OutFile, OutputPathFileName);
Rewrite(OutFile); //Open file for writing
{$I+}
try
StatusBar1.Panels.Items[0].Text:='Reading Input file';
Infile.LoadFromFile(OpenDialog1.Filename);
{Go through all lines in input file}
for s in Infile do begin
{Get Data Line, begins with # UTC Date & Time}
if AnsiContainsStr(s,'# UTC Date & Time') then begin
{ Parse field definition line to insert new fields. }
pieces.Delimiter := ',';
pieces.StrictDelimiter := True; //Do not parse spaces also
pieces.DelimitedText := s;
ComposeString:=pieces.Strings[0]+','+pieces.Strings[1]+', Julian Date, UT date';
{ Get the field locations. }
for i:=2 to pieces.Count-1 do begin
ComposeString:=ComposeString+','+pieces.Strings[i];
end;
end
{Get Data Line, begins with # YYYY-MM-DDTHH:mm:ss.fff;}
else if AnsiContainsStr(s,'# YYYY-MM-DDTHH:mm:ss.fff;') then begin
{ Parse field definition line to insert new fields. }
pieces.Delimiter := ';';
pieces.StrictDelimiter := True; //Do not parse spaces also
pieces.DelimitedText := s;
ComposeString:=pieces.Strings[0]+';'+pieces.Strings[1]+';day.frac;day.frac ';
{ Get the field locations. }
for i:=2 to pieces.Count-1 do begin
ComposeString:=ComposeString+';'+pieces.Strings[i];
end;
end
{General comment line}
else if AnsiContainsStr(s,'# ') then begin
ComposeString:=s;
end
{Data line}
else begin
pieces.Delimiter := ';';
pieces.StrictDelimiter := True; //Do not parse spaces
{ Separate the fields of the record. }
pieces.DelimitedText := s;
{ Pass first and second field untouched. }
ComposeString:=pieces.Strings[0]+';'+pieces.Strings[1];
{ Assume that the first field is UT time. }
UTCRecord:=ScanDateTime('yyyy-mm-dd"T"hh:nn:ss.zzz',pieces.Strings[0]);
{ Perform the conversion to Julian date.
Output UT datetime as decimal with enough precision to indicate seconds.}
ComposeString:=ComposeString+format(';%.1f;%.8f',[DateTimeToJulianDate(UTCRecord), UTCRecord]);
{ Compose remainder of string untouched. }
for i:=2 to pieces.count-1 do begin
ComposeString:=ComposeString+';'+pieces.Strings[i];
end;
end;
{ Write corrected line to output file. }
WriteLn(OutFile,ComposeString);
end;
Flush(OutFile);
CloseFile(OutFile);
StatusBar1.Panels.Items[0].Text:='Finished file'+SourceFileName;
except
on E: EInOutError do
begin
MessageDlg('Error', 'File handling error occurred. Details: '+E.ClassName+'/'+E.Message, mtError, [mbOK],0);
end;
end;
StatusBar1.Panels.Items[0].Text:='Finished converting file. Result stored in :'+OutputPath;
finally
end;
end;
end;
initialization
{$I date2dec.lrs}
end.
|
