11import 'helpers.dart' ;
22
33RegExp _email = RegExp (
4- r"^((([a-z]|\d|[!#\$%&'*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))$" );
4+ r"^((([a-z]|\d|[!#\$%&'*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))$" ,
5+ );
56
67RegExp _ipv4Maybe = RegExp (r'^(\d?\d?\d)\.(\d?\d?\d)\.(\d?\d?\d)\.(\d?\d?\d)$' );
78RegExp _ipv6 =
89 RegExp (r'^::|^::1|^([a-fA-F0-9]{1,4}::?){1,7}([a-fA-F0-9]{1,4})$' );
910
1011RegExp _creditCard = RegExp (
11- r'^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|6(?:011|5[0-9][0-9])[0-9]{12}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|(?:2131|1800|35\d{3})\d{11})$' );
12+ r'^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|6(?:011|5[0-9][0-9])[0-9]{12}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|(?:2131|1800|35\d{3})\d{11})$' ,
13+ );
1214
1315int _maxUrlLength = 2083 ;
1416
@@ -25,22 +27,31 @@ bool isEmail(String str) {
2527/// * [allowUnderscore] sets if underscores are allowed
2628/// * [hostWhitelist] sets the list of allowed hosts
2729/// * [hostBlacklist] sets the list of disallowed hosts
28- bool isURL (String ? str,
29- {List <String ?> protocols = const ['http' , 'https' , 'ftp' ],
30- bool requireTld = true ,
31- bool requireProtocol = false ,
32- bool allowUnderscore = false ,
33- List <String > hostWhitelist = const [],
34- List <String > hostBlacklist = const []}) {
30+ bool isURL (
31+ String ? str, {
32+ List <String ?> protocols = const ['http' , 'https' , 'ftp' ],
33+ bool requireTld = true ,
34+ bool requireProtocol = false ,
35+ bool allowUnderscore = false ,
36+ List <String > hostWhitelist = const [],
37+ List <String > hostBlacklist = const [],
38+ }) {
3539 if (str == null ||
3640 str.isEmpty ||
3741 str.length > _maxUrlLength ||
3842 str.startsWith ('mailto:' )) {
3943 return false ;
4044 }
4145 int port;
42- String ? protocol, auth, user;
43- String host, hostname, portStr, path, query, hash;
46+ String ? protocol;
47+ String ? auth;
48+ String ? user;
49+ String host;
50+ String hostname;
51+ String portStr;
52+ String path;
53+ String query;
54+ String hash;
4455
4556 // check protocol
4657 var split = str.split ('://' );
@@ -83,7 +94,7 @@ bool isURL(String? str,
8394 if (split.length > 1 ) {
8495 auth = shift (split);
8596 if (auth? .contains (':' ) ?? false ) {
86- user = shift (auth! .split (':' ))! ;
97+ user = shift (auth! .split (':' ));
8798 if (! RegExp (r'^\S+$' ).hasMatch (user)) {
8899 return false ;
89100 }
@@ -110,8 +121,11 @@ bool isURL(String? str,
110121 }
111122
112123 if (! isIP (host, null ) &&
113- ! isFQDN (host,
114- requireTld: requireTld, allowUnderscores: allowUnderscore) &&
124+ ! isFQDN (
125+ host,
126+ requireTld: requireTld,
127+ allowUnderscores: allowUnderscore,
128+ ) &&
115129 host != 'localhost' ) {
116130 return false ;
117131 }
@@ -137,7 +151,7 @@ bool isIP(String? str, int? version) {
137151 if (! _ipv4Maybe.hasMatch (str! )) {
138152 return false ;
139153 }
140- var parts = str.split ('.' );
154+ final parts = str.split ('.' );
141155 parts.sort ((a, b) => int .parse (a) - int .parse (b));
142156 return int .parse (parts[3 ]) <= 255 ;
143157 }
@@ -148,17 +162,20 @@ bool isIP(String? str, int? version) {
148162///
149163/// * [requireTld] sets if TLD is required
150164/// * [allowUnderscore] sets if underscores are allowed
151- bool isFQDN (String str,
152- {bool requireTld = true , bool allowUnderscores = false }) {
153- var parts = str.split ('.' );
165+ bool isFQDN (
166+ String str, {
167+ bool requireTld = true ,
168+ bool allowUnderscores = false ,
169+ }) {
170+ final parts = str.split ('.' );
154171 if (requireTld) {
155- var tld = parts.removeLast ();
172+ final tld = parts.removeLast ();
156173 if (parts.isEmpty || ! RegExp (r'^[a-z]{2,}$' ).hasMatch (tld)) {
157174 return false ;
158175 }
159176 }
160177
161- for (var part in parts) {
178+ for (final part in parts) {
162179 if (allowUnderscores) {
163180 if (part.contains ('__' )) {
164181 return false ;
@@ -178,7 +195,7 @@ bool isFQDN(String str,
178195
179196/// check if the string is a credit card
180197bool isCreditCard (String str) {
181- var sanitized = str.replaceAll (RegExp (r '[^0-9]+''' );
198+ final sanitized = str.replaceAll (RegExp ('[^0-9]+' ), '' );
182199 if (! _creditCard.hasMatch (sanitized)) {
183200 return false ;
184201 }
@@ -189,13 +206,13 @@ bool isCreditCard(String str) {
189206 var shouldDouble = false ;
190207
191208 for (var i = sanitized.length - 1 ; i >= 0 ; i-- ) {
192- digit = sanitized.substring (i, ( i + 1 ) );
209+ digit = sanitized.substring (i, i + 1 );
193210 var tmpNum = int .parse (digit);
194211
195212 if (shouldDouble == true ) {
196213 tmpNum *= 2 ;
197214 if (tmpNum >= 10 ) {
198- sum += (( tmpNum % 10 ) + 1 ) ;
215+ sum += (tmpNum % 10 ) + 1 ;
199216 } else {
200217 sum += tmpNum;
201218 }
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