Wrong value for vCard property VERSION returned about ez-vcard HOT 4 CLOSED

Hi Peter,

ez-vcard logs the invalid version number as a parse warning, and then treats it as an extended (custom) property:

List<List<ParseWarning>> warnings = new ArrayList<>();
Path path = Paths.get("peter.vcf");
VCard vcard = Ezvcard.parse(path).warnings(warnings).first();

System.out.println(vcard.getExtendedProperty("VERSION").getValue());
System.out.println(warnings);

Outputs:

1.0
[[Line 2 (VERSION property): (27) Skipped.  Unknown version number found. Treating it as a regular property.  The entire line is: "VERSION:1.0"]]

Regards,
Mike

from ez-vcard.

From Peter via email:

Hi Mike,

thank you very much for your support. Your solution works fine for me, however, I’am still struggling with the version property…

When Property VERSION is absent, neither a parse warning nor a validation warning is issued.

Please see this example:

BEGIN:VCARD
N;LANGUAGE=en:Doe;John
FN:John Doe
ORG:Big Company
TITLE:Boss
TEL;WORK;VOICE:0123456789
X-MS-OL-DEFAULT-POSTAL-ADDRESS:0
EMAIL;PREF;INTERNET:[email protected]
REV:20231122T151319Z
END:VCARD

Using Ezvcard.parse(path).warnings(warnings).first() the list of warnings is empty.

Using ValidationWarnings = Ezvcard.parse(path).first().validate(vcardVersion) the ValidationWarnings object is empty too.

vcard.getExtendedProperty("VERSION") return a NULL value when property VERSION is absent but it also returns a NULL value, when property VERSION is set to a proper value, e.g. “2.1”. So this method is not useful too.

Would you please check again? Is there any possibility to check if property VERSION is provided at all?

Kind regards

Peter

from ez-vcard.

Hi Peter,

There is currently no direct way of detecting whether a VERSION property is missing from a vCard.

As a workaround, you could parse the vCard twice using different default versions and compare the versions of the parsed vCards.

Path path = Paths.get("peter.vcf");

VCardVersion v1;
try (VCardReader reader = new VCardReader(path, VCardVersion.V2_1)) {
  VCard vcard = reader.readNext();
  v1 = vcard.getVersion();
}

VCardVersion v2;
try (VCardReader reader = new VCardReader(path, VCardVersion.V3_0)) {
  VCard vcard = reader.readNext();
  v2 = vcard.getVersion();
}

boolean versionPropertyIsMissing = (v1 != v2);

Regards,
Mike

from ez-vcard.

From Peter via email:

Hi Mike,

thank you very much for your code example. The workaround is great! I have checked the functionality within my application. Now everything is fine.

Kind regards

Peter

from ez-vcard.