dab246
64 lines
2.6 KiB
Dart
64 lines
2.6 KiB
Dart
|
|
import 'package:core/utils/app_logger.dart';
|
|
|
|
class LinkifyHtml {
|
|
|
|
String generateLinkify(String inputText) {
|
|
var replacedText = _linkifyUrlAddress(inputText);
|
|
replacedText = _linkifyMailToAddress(replacedText);
|
|
return replacedText;
|
|
}
|
|
|
|
RegExp _generateRegExp(String pattern) {
|
|
return RegExp(pattern, multiLine: true, caseSensitive: false);
|
|
}
|
|
|
|
/// URLs starting with http://, https://, ftp://, or "www." without //.
|
|
String _linkifyUrlAddress(String inputText) {
|
|
var replacedText = inputText;
|
|
|
|
// URLs starting with http://, https://, ftp://
|
|
final regexLinkWithHttp = _generateRegExp(r'(\b(https?|ftp):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])');
|
|
final newReplacedTextWithHttp = replacedText.replaceAllMapped(regexLinkWithHttp, (regexMatch) {
|
|
final link = regexMatch.group(1);
|
|
final newLinkWithHttp = link?.isNotEmpty == true
|
|
? '<a href="$link" target="_blank">$link</a>'
|
|
: '';
|
|
log('ConvertUrlStringToHtmlLinksTransformers::_linkifyUrlAddress(): newLinkWithHttp: $newLinkWithHttp');
|
|
return newLinkWithHttp;
|
|
});
|
|
replacedText = newReplacedTextWithHttp;
|
|
|
|
// URLs starting with "www." without // before it or it'd re-link the ones done above.
|
|
final regexLinkWithWWW = _generateRegExp(r'(^|[^\/])(www\.[\S]+(\b|\$))');
|
|
final newReplacedTextWithWWW = replacedText.replaceAllMapped(regexLinkWithWWW, (regexMatch) {
|
|
final previousChar = regexMatch.group(1);
|
|
log('LinkifyHtml::_linkifyUrlAddress(): previousChar: $previousChar');
|
|
final link = regexMatch.group(2);
|
|
final newLinkWithWWW = link?.isNotEmpty == true
|
|
? '$previousChar<a href="https://$link" target="_blank">$link</a>'
|
|
: '';
|
|
log('ConvertUrlStringToHtmlLinksTransformers::_linkifyUrlAddress(): newLinkWithWWW: $newLinkWithWWW');
|
|
return newLinkWithWWW;
|
|
});
|
|
replacedText = newReplacedTextWithWWW;
|
|
|
|
return replacedText;
|
|
}
|
|
|
|
/// Change email addresses to mailto:: links.
|
|
String _linkifyMailToAddress(String inputText) {
|
|
final regexMailTo = _generateRegExp(r'(([a-zA-Z0-9\-\_\.])+@[a-zA-Z\_]+?(\.[a-zA-Z]{2,6})+)');
|
|
|
|
final newReplacedTextWitMailTo = inputText.replaceAllMapped(regexMailTo, (regexMatch) {
|
|
final emailAddress = regexMatch.group(1);
|
|
final newMailToLink = emailAddress?.isNotEmpty == true
|
|
? '<a href="mailto:$emailAddress">$emailAddress</a>'
|
|
: '';
|
|
log('ConvertUrlStringToHtmlLinksTransformers::_linkifyUrlAddress(): newMailToLink: $newMailToLink');
|
|
return newMailToLink;
|
|
});
|
|
|
|
return newReplacedTextWitMailTo;
|
|
}
|
|
} |