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class LinkTextParase {
static List < String > stringParase ( String text , { Pattern ? pattern } ) {
List < String > _listString = [ ] ;
List < String > _urls = [ ] ; //匹配到的url存入这个数组
//使用正则表达式匹配url, 将字符串中url前后的部分分割存储为字符串列表
Pattern _pattern = pattern ? ?
RegExp (
r"(https?|ftp|file)://[-A-Za-z0-9+&@#/%?=~_|!:,.;]+[-A-Za-z0-9+&@#/%=~_|]" ) ; //url的正则表达式
_listString = text . split ( _pattern ) ;
var _matches = _pattern . allMatches ( text ) ;
for ( var item in _matches ) {
_urls . add ( item [ 0 ] ! ) ;
print ( item [ 0 ] ) ;
}
//将url插入字符串数组
for ( var i = 0 ; i < _urls . length ; i + + ) {
_listString . insert ( 2 * i + 1 , _urls [ i ] ) ;
}
return _listString ;
}
}