Common regular Expression identity card information and the judgment of bank card information

Mailbox
+ (BOOL) Validateemail: (NSString *) email
{
NSString *emailregex = @ "[A-z0-9a-z._%+-][email protected][a-za-z0-9.-]+\\. [A-za-z] {2,4} ";
Nspredicate *emailtest = [Nspredicate predicatewithformat:@ "Self MATCHES%@", Emailregex];
return [Emailtest Evaluatewithobject:email];
}

Mobile phone number verification. Yes, the phone number.
+ (BOOL) Validatemobile: (NSString *) mobile
{
Phone number starts with 13, 14, 15,17,18, eight \d numeric characters
NSString *phoneregex = @ "(^1[3|4|5|7|8][0-9]{9}$)";
Nspredicate *phonetest = [Nspredicate predicatewithformat:@ "Self MATCHES%@", Phoneregex];
return [Phonetest Evaluatewithobject:mobile];
}

User name to determine whether to include Chinese characters
+ (BOOL) Validateusername: (NSString *) name{
for (int i=0; i< [name length];i++) {
int a = [name characteratindex:i];
if (A > 0x4e00 && a < 0X9FFF) {
return YES;
}
} return NO;

}

ID number
+ (BOOL) Validateidentitycard: (NSString *) identitycard{

BOOL Flag;
if (identitycard.length <= 0)
{
flag = NO;
return flag;
}

NSString *regex2 = @ "^ (^[1-9]\\d{7} ((0\\d) | ( 1[0-2]) (([0|1|2]\\d) |3[0-1]) \\d{3}$) | (^[1-9]\\d{5}[1-9]\\d{3} ((0\\d) | ( 1[0-2]) (([0|1|2]\\d) |3[0-1]) ((\\d{4}) |\\d{3}[xx]) $) $ ";
Nspredicate *identitycardpredicate = [Nspredicate predicatewithformat:@ "Self MATCHES%@", Regex2];
Flag = [Identitycardpredicate Evaluatewithobject:identitycard];


If you pass this verification, the ID card is in the correct format, but the accuracy needs to be calculated
if (flag)
{
if (identitycard.length==18)
{
Save the first 17-bit weighting factor in an array
Nsarray * Idcardwiarray = @[@ "7", @ "9", @ "10", @ "5", @ "8", @ "4", @ "2", @ "1", @ "6", @ "3", @ "7", @ "9", @ "10", @ "5", @ "8", @ " 4 "@" 2 "];

This is the 11-bit remainder, the verification code, which is divided by 11, which can also be saved as an array
Nsarray * Idcardyarray = @[@ "1", @ "0", @ "10", @ "9", @ "8", @ "7", @ "6", @ "5", @ "4", @ "3", @ "2"];

Used to hold the sum of the first 17 digits after the weighted factor.

Nsinteger idcardwisum = 0;
for (int i = 0;i < 17;i++)
{
Nsinteger Substrindex = [[Identitycard substringwithrange:nsmakerange (I, 1)] integervalue];
Nsinteger Idcardwiindex = [[Idcardwiarray objectatindex:i] integervalue];

idcardwisum+= Substrindex * IDCARDWIINDEX;

}

Calculates the position of the array where the checksum is located
Nsinteger idcardmod=idcardwisum%11;

Get the last ID number.
NSString * idcardlast= [Identitycard substringwithrange:nsmakerange (17, 1)];

If it equals 2, then the check code is 10, the last digit of the ID number should be X
if (idcardmod==2)
{
if ([Idcardlast isequaltostring:@ "X"]| | [Idcardlast isequaltostring:@ "X"])
{
return flag;
}else
{
flag = NO;
return flag;
}
}else
{
Use the calculated verification code to match the last identity card number, if the same, the explanation passed, otherwise it is invalid ID number
if ([Idcardlast isequaltostring: [Idcardyarray Objectatindex:idcardmod]])
{
return flag;
}
Else
{
flag = NO;
return flag;
}
}
}
Else
{
flag = NO;
return flag;
}
}
Else
{
return flag;
}
}

Bank card number
+ (BOOL) Validatebankcard: (NSString *) Bankcard
{
if (Bankcard.length = = 0) {
return NO;
}
NSString *digitsonly = @ "";
char c;
for (int i = 0; i < bankcard.length; i++)
{
c = [Bankcard characteratindex:i];
if (IsDigit (c))
{
Digitsonly =[digitsonly stringbyappendingformat:@ "%c", c];
}
}
int sum = 0;
int digit = 0;
int addend = 0;
BOOL timestwo = false;
for (Nsinteger i = digitsonly.length-1; I >= 0; i--)
{
digit = [digitsonly characteratindex:i]-' 0 ';
if (timestwo)
{
Addend = digit * 2;
if (Addend > 9) {
Addend-= 9;
}
}
else {
Addend = digit;
}
sum + = Addend;
Timestwo =!timestwo;
}
int modulus = sum% 10;
return modulus = = 0;
}
Get Phone IP
+ (NSString *) Getphoneip {
NSString *address = @ "error";
struct Ifaddrs *interfaces = NULL;
struct Ifaddrs *temp_addr = NULL;
int success = 0;
Retrieve the current Interfaces-returns 0 on success
Success = Getifaddrs (&interfaces);
if (success = = 0) {
Loop through linked list of interfaces
TEMP_ADDR = interfaces;
while (temp_addr! = NULL) {
if (temp_addr->ifa_addr->sa_family = = af_inet) {
Check if interface is En0 which are the WiFi connection on the IPhone
if ([[[NSString Stringwithutf8string:temp_addr->ifa_name] isequaltostring:@ "En0"]) {
Get NSString from C String
address = [NSString stringwithutf8string:inet_ntoa ((struct sockaddr_in *) temp_addr->ifa_addr->sin_addr)];
}
}
TEMP_ADDR = temp_addr->ifa_next;
}
}
Free memory
Freeifaddrs (interfaces);
if ([Address isequaltostring:@ "error"])
{
Address = @ "192.168.1.1";
}
return address;

}

First time in App
+ (BOOL) Isfirsttimeenterapp
{
static NSString *fristtimeenterappkey = @ "Fristtimeenterappkey";
Nsuserdefaults *userdefaults = [Nsuserdefaults standarduserdefaults];
if ([Userdefaults Objectforkey:fristtimeenterappkey])
{
return (NO);
}
[Userdefaults setvalue:@ "" Forkey:fristtimeenterappkey];
return (YES);
}

/**
* MD5 Encrypted string
*/
+ (NSString *) md5nsstring: (NSString *) string{

if (string = = Nil | | [string length] = = 0) {
return nil;
}
unsigned char digest[cc_md5_digest_length], I;
CC_MD5 ([String utf8string], (int) [string lengthofbytesusingencoding:nsutf8stringencoding], digest);
nsmutablestring *ms = [nsmutablestring string];

for (i = 0; i < cc_md5_digest_length; i++) {
[Ms Appendformat:@ "%02X", (int) (digest[i])];
}

return [MS Copy];

}

Common regular Expression identity card information and the judgment of bank card information