VCard1.fromPlainText constructor

VCard1.fromPlainText(String plainText)

Constructor from the plain text.

Exmaple:

BEGIN:VCARD
VERSION:1.0
N:Gump;Forrest;;Mr.
FN:Forrest Gump
ORG:Bubba Gump Shrimp Co.
TITLE:Shrimp Man
TEL;WORK;VOICE:[phone]
TEL;HOME;VOICE:[phone]
ADR;WORK;PREF:;;100 Waters Edge;Baytown;LA;30314;United States of America
ADR;HOME:;;42 Plantation St.;Baytown;LA;30314;United States of America
URL:http://www.johndoe.com
REV:20080424T195243Z
END:VCARD

Implementation

factory VCard1.fromPlainText(String plainText) {
  final texts = plainText.trim().split('\n');
  if (texts.first != 'BEGIN:VCARD') {
    throw VCardParsingError('vCard must starts with "BEGIN:VCARD"');
  } else {
    texts.removeAt(0);
  }
  if (texts.last != 'END:VCARD') {
    throw VCardParsingError('vCard must ends with "END:VCARD"');
  } else {
    texts.removeLast();
  }
  if (!texts.contains('VERSION:1.0')) {
    throw VCardParsingError('The vCard must have "VERSION:1.0" as the vCard specification');
  }
  final name = VCardName.fromPlainText(texts.firstWhere((e) => e.startsWith('N:')));
  final tel = <VCardTelephone>[];
  final adr = <VCardAddress>[];
  final emails = <String>[];
  VCardGeo? geo;
  VCardOrganization? org;
  String? title;
  String? role;
  String? url;
  DateTime? rev;
  for (String t in texts) {
    if (t.startsWith('TEL')) {
      tel.add(VCardTelephone.fromPlainText(t, VCardVersion.v1));
    } else if (t.startsWith('ADR')) {
      adr.add(VCardAddress.fromPlainText(t));
    } else if (t.startsWith('GEO')) {
      geo = VCardGeo.fromPlainText(t);
    } else if (t.startsWith('EMAIL')) {
      emails.add(t.substring(6));
    } else if (t.startsWith('ORG')) {
      org = VCardOrganization.fromPlainText(t);
    } else if (t.startsWith('TITLE')) {
      title = t.substring(6);
    } else if (t.startsWith('ROLE')) {
      role = t.substring(5);
    } else if (t.startsWith('URL')) {
      url = t.substring(4);
    } else if (t.startsWith('REV')) {
      rev = DateTime.tryParse(t.substring(4));
    }
  }
  return VCard1(
    name: name,
    telephone: tel.isNotEmpty ? tel : null,
    address: adr.isNotEmpty ? adr : null,
    geo: geo,
    emails: emails.isNotEmpty ? emails : null,
    organization: org,
    title: title,
    role: role,
    url: url,
    revision: rev,
  );
}