mask flexibility

[HamiltonSantos]

I could't figure out how to implement a mask for phones with 8 OR 9 digits as it needs the mask (##) ####-#### in one case and (##) #####-#### in other, is it possible using your framework?

[gabrieltva]

Hi, you solved this? Can you help me?

[HamiltonSantos]

Yeah, I made a new version of his class:
`#import "SNMaskTextField.h"
#define MaskPhone @"MaskPhone"

NSString *kSNMaskTextFieldDefaultChar = @"#";

@implementation SNMaskTextField

• (instancetype)initWithCoder:(NSCoder *)coder
  {
  self = [super initWithCoder:coder];
  if (self) {
  self.mask = kSNMaskTextFieldDefaultChar;
  }
  return self;
  }

• (instancetype)initWithFrame:(CGRect)frame
  {
  self = [super initWithFrame:frame];
  if (self) {
  self.mask = kSNMaskTextFieldDefaultChar;
  }
  return self;
  }

• (BOOL)shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{
  NSString * currentTextDigited = [self.text stringByReplacingCharactersInRange:range withString:string];

  //Guarda a mascara original, para alterar quando for telefone:
  NSString *maskTemp = _mask;
  if ([_mask isEqualToString:MaskPhone]){
  //Verifica se o proximo telefone esta sendo digitado novo digito.
  if (currentTextDigited.length >= 15){
  _mask = @"(##) #####-####";
  }else{
  _mask = @"(##) ####-####";
  }
  }

  NSUInteger onOriginal = 0, onFilter = 0, onOutput = 0;
  char outputString[([_mask length])];
  BOOL done = NO;

  while(onFilter < [_mask length] && !done)
  {
  char filterChar = [_mask characterAtIndex:onFilter];
  char originalChar = onOriginal >= currentTextDigited.length ? '\0' : [currentTextDigited characterAtIndex:onOriginal];
  switch (filterChar) {
  case '#':
  if(originalChar=='\0')
  {
  // We have no more input numbers for the filter. We're done.
  done = YES;
  break;
  }
  if(isdigit(originalChar))
  {
  outputString[onOutput] = originalChar;
  onOriginal++;
  onFilter++;
  onOutput++;
  }
  else
  {
  onOriginal++;
  }
  break;
  default:
  if (onOutput != currentTextDigited.length){
  // Any other character will automatically be inserted for the user as they type (spaces, - etc..) or deleted as they delete if there are more numbers to come.
  outputString[onOutput] = filterChar;
  onOutput++;
  if(originalChar == filterChar)
  onOriginal++;
  }
  onFilter++;
  break;
  }
  }
  outputString[onOutput] = '\0'; // Cap the output string
  NSString *value = [NSString stringWithUTF8String:outputString];
  self.text = value;

  _mask = maskTemp;

  return NO;
  }
  @end`