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unit convertlogfileunit;
//Tool: .dat to Moon Sun .csv
{$mode objfpc}
interface
uses
appsettings, //Required to read application settings (like locations).
dateutils, //Required to convert logged UTC string to TDateTime
strutils, //Required for checking lines in conversion file.
moon, //required for Moon calculations
Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
StdCtrls, ExtCtrls, ComCtrls;
type
{ Tconvertdialog }
Tconvertdialog = class(TForm)
CloseButton: TButton;
OutputFilenameDisplay: TLabeledEdit;
LatitudeDisplay: TLabeledEdit;
LongitudeDisplay: TLabeledEdit;
Memo1: TMemo;
OpenFileDialog: TOpenDialog;
SelectButton: TButton;
StatusBar1: TStatusBar;
procedure CloseButtonClick(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure SelectButtonClick(Sender: TObject);
private
{ private declarations }
public
{ public declarations }
end;
var
convertdialog: Tconvertdialog;
implementation
uses
Unit1
, header_utils;
{ Tconvertdialog }
procedure Tconvertdialog.SelectButtonClick(Sender: TObject);
var
File1,OutFile: TextFile;
Str: String;
pieces: TStringList;
MoonElevation: extended = 0.0;
MoonAzimuth: extended = 0.0;
SunElevation: extended = 0.0;
SunAzimuth: extended = 0.0;
UTCRecord :TDateTime;
ComposeString: String;
OutFileString: String;
WriteAllowable: Boolean = True; //Allow output file to be written or not.
LineNumber: Integer =0;
EndTrimString: String =', Zenith, Azimuth, MoonPhaseDeg, MoonElevDeg, MoonIllum';
ErrorString: String;
begin
pieces := TStringList.Create;
{ Clear status bar }
StatusBar1.Panels.Items[0].Text:='';
OpenFileDialog.Filter:='data log files|*.dat|All files|*.*';
OpenFileDialog.InitialDir := appsettings.LogsDirectory;
if OpenFileDialog.Execute then begin
//Start reading file.
StatusBar1.Panels.Items[0].Text:='Reading Input file';
AssignFile(File1, OpenFileDialog.Filename);
OutFileString:=ChangeFileExt(OpenFileDialog.Filename,'.csv');
AssignFile(OutFile, OutFileString);
OutputFilenameDisplay.Text:=OutFileString;
//StatusBar1.Panels.te;
if FileExists(OutFileString) then begin
if (MessageDlg('Overwrite existing file?','Do you want to overwrite the existing file?',mtConfirmation,[mbOK,mbCancel],0) = mrOK) then
WriteAllowable:=True
else
WriteAllowable:=False;
end;
if WriteAllowable then begin
{$I+}
try
Reset(File1);
Rewrite(OutFile); //Open file for writing
StatusBar1.Panels.Items[0].Text:='Processing Input file, please wait ...'; Application.ProcessMessages;
repeat
// Read one line at a time from the file.
Readln(File1, Str);
inc(LineNumber);
// Get location data from header.
if AnsiStartsStr('# Position',Str) then begin
//Prepare for parsing.
pieces.Delimiter := ',';
pieces.StrictDelimiter := True; //Do not parse spaces.
//Remove comment from beginning of line.
pieces.DelimitedText := AnsiRightStr(Str,length(Str) - RPos(':',Str));
if (pieces.Count<2) then begin
ErrorString:='No location data found in header.';
StatusBar1.Panels.Items[0].Text:=ErrorString;
MessageDlg('Error',ErrorString, mtError, [mbOK],0);
Writeln(OutFile,'Error: No location data found in header.');
LatitudeDisplay.Text:='nul';
LongitudeDisplay.Text:='nul';
break;
end
else
begin
MyLatitude:=StrToFloat(pieces.Strings[0]);
if ((MyLatitude<-90.0) or (MyLatitude>90.0)) then begin
ErrorString:='Error: Latitude ' + FloatToStr(MyLatitude) +' out of range';
StatusBar1.Panels.Items[0].Text:=ErrorString;
StatusMessage(ErrorString);
break;
end;
MyLongitude:=StrToFloat(pieces.Strings[1]);
if ((MyLongitude<-180.0) or (MyLongitude>180.0)) then begin
ErrorString:='Error: Longitude '+FloatToStr(MyLongitude)+' out of range';
StatusBar1.Panels.Items[0].Text:=ErrorString;
StatusMessage('Error: Longitude '+FloatToStr(MyLongitude)+' out of range');
break;
end;
LatitudeDisplay.Text:=Format('%.3f',[MyLatitude]);
LongitudeDisplay.Text:=Format('%.3f',[MyLongitude]);
end;
end;
Application.ProcessMessages;
//Get and modify record header string
//if AnsiStartsStr('# YYYY-MM-DDTHH:mm:ss.fff;',Str) then
// Writeln(OutFile,'UTC '+AnsiRightStr(Str,length(Str) - 2)+';MoonPhaseDeg;MoonElevDeg;MoonIllum%;SunElevDeg');
Str:=Trim(Str);
if AnsiStartsStr('# UTC Date & Time,',Str) then begin
if AnsiEndsStr(EndTrimString,Str) then begin
Str:=AnsiLeftStr(Str,Length(Str)-Length(EndTrimString));
end;
//Remove preceding comment marker
Writeln(OutFile,AnsiRightStr(Str,length(Str) - 2)+';MoonPhaseDeg;MoonElevDeg;MoonIllum%;SunElevDeg');
end;
Application.ProcessMessages;
//Ignore comment lines which have # as first character.
if not AnsiStartsStr('#',Str) then
begin
//Separate the fields of the record.
pieces.Delimiter := ';';
pieces.DelimitedText := Str;
begin
//parse the fields, and convert as necessary.
//Convert UTC string 'YYYY-MM-DDTHH:mm:ss.fff' into TDateTime
UTCRecord:=ScanDateTime('yyyy-mm-dd"T"hh:nn:ss.zzz',pieces.Strings[0]);
//Calculate Moon position
//Change sign for Moon calculations
Moon_Position_Horizontal(
StrToDateTime(DateTimeToStr(UTCRecord)),
-1.0*MyLongitude,
MyLatitude,
MoonElevation,
MoonAzimuth);
Sun_Position_Horizontal(
StrToDateTime(DateTimeToStr(UTCRecord)),
-1.0*MyLongitude,
MyLatitude,SunElevation,
SunAzimuth);
//Prepare string for output.
ComposeString:= Str + ';'
//Moon Phase angle (0 to 180 degrees).
+ Format('%.1f;',[moon_phase_angle(StrToDateTime(DateTimeToStr(UTCRecord)))])
//Moon elevation (positive = above horizon, negative = below horizon).
+ Format('%.3f;',[MoonElevation])
//Moon illumination pecent.
+ Format('%.1f;',[current_phase(StrToDateTime(DateTimeToStr(UTCRecord)))*100.0])
//Sun elevation (positive = above horizon, negative = below horizon).
+ Format('%.3f;',[SunElevation])
;
WriteLn(OutFile,ComposeString);
end;//End of checking number of fields in record.
end;
until(EOF(File1)); // EOF(End Of File) The the program will keep reading new lines until there is none.
CloseFile(File1);
StatusBar1.Panels.Items[0].Text:='Writing Output file';
except
//on E: EInOutError do begin
on E: Exception do begin
MessageDlg('Error', 'File handling error occurred. Details: ' + sLineBreak + 'On Line number: '+ IntToStr(LineNumber) + sLineBreak +E.ClassName+'/'+E.Message, mtError, [mbOK],0);
StatusBar1.Panels.Items[0].Text:='Error encountered.';
end;
end;
Flush(OutFile);
CloseFile(OutFile);
StatusBar1.Panels.Items[0].Text:='Processing complete';
end;//End of WriteAllowable check.
end;
end;
procedure Tconvertdialog.CloseButtonClick(Sender: TObject);
begin
Close;
end;
procedure Tconvertdialog.FormCreate(Sender: TObject);
begin
{ Clear status bar }
StatusBar1.Panels.Items[0].Text:='';
end;
initialization
{$I convertlogfileunit.lrs}
end.
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