Re: [fpc-pascal] How to use StrToDateTime() to convert a string with no delimiters?
On Tue, 25 Apr 2023 08:25:01 +0200 (CEST), Michael Van Canneyt via fpc-pascal wrote: > > >On Mon, 24 Apr 2023, Thomas Kurz via fpc-pascal wrote: > >> I always use ScanDateTime for such purposes: >> >> https://www.freepascal.org/docs-html/rtl/dateutils/scandatetime.html >> >> You can explicitly define the pattern. > >Correct. This is the only correct way to do this. > >StrToDateTime is very limited in what it accepts. > >Michael. Thanks, I did not know about this before, but now it is inserted in my code and works fine. :-) So now I can just specify the pattern of data to be scanned using the y, m, h, n and s letters. But I am adding 20 on front of the telegram value because that uses only a 2-digit year and I had problems on my new RPiZero until I added the two yy in front of the pattern making it a 4-char year and the 20 in front of the telegram. Then all works fine. -- Bo Berglund Developer in Sweden ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] How to use StrToDateTime() to convert a string with no delimiters?
On Mon, 24 Apr 2023, Thomas Kurz via fpc-pascal wrote: I always use ScanDateTime for such purposes: https://www.freepascal.org/docs-html/rtl/dateutils/scandatetime.html You can explicitly define the pattern. Correct. This is the only correct way to do this. StrToDateTime is very limited in what it accepts. Michael. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] How to use StrToDateTime() to convert a string with no delimiters?
I always use ScanDateTime for such purposes: https://www.freepascal.org/docs-html/rtl/dateutils/scandatetime.html You can explicitly define the pattern. - Original Message - From: Bo Berglund via fpc-pascal To: fpc-pascal@lists.freepascal.org Sent: Monday, April 24, 2023, 20:08:01 Subject: [fpc-pascal] How to use StrToDateTime() to convert a string with no delimiters? I have a device that sends data over the serial port with a timestamp in this format: (230424194642W) This is coded as yymmddhhnnss and the last char designates daylight savings (S)ummer or normal (W)inter time. In the example above it is W for normal winter time. What I have done so far is: - Remove the () at start and end - Remove the W at the end - Add 20 (as the century) up front - Insert a space after the 6th char (so between date and time - Set the TFormatsettings like this (to say that there are no separators): FS.DateSeparator := #0; (Is this how it is done?) FS.TimeSeparator := #0; - Then the call: Value := StrToDateTime(sValue, FS); (Value is declared as TDateTime) This triggers an exception with the message: "194522" is not a valid time What is the proper way to decode a string as shown above? Since the date part could be decoded, why not also the time part, after all I separated the two with a space and set the same separators? -- Bo Berglund Developer in Sweden ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
[fpc-pascal] How to use StrToDateTime() to convert a string with no delimiters?
I have a device that sends data over the serial port with a timestamp in this format: (230424194642W) This is coded as yymmddhhnnss and the last char designates daylight savings (S)ummer or normal (W)inter time. In the example above it is W for normal winter time. What I have done so far is: - Remove the () at start and end - Remove the W at the end - Add 20 (as the century) up front - Insert a space after the 6th char (so between date and time - Set the TFormatsettings like this (to say that there are no separators): FS.DateSeparator := #0; (Is this how it is done?) FS.TimeSeparator := #0; - Then the call: Value := StrToDateTime(sValue, FS); (Value is declared as TDateTime) This triggers an exception with the message: "194522" is not a valid time What is the proper way to decode a string as shown above? Since the date part could be decoded, why not also the time part, after all I separated the two with a space and set the same separators? -- Bo Berglund Developer in Sweden ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
