NSString match a string beginning and replace the string if matched

Question

Here is my NSString:

<meta name=3D"viewport" content=3D"width=3Ddevice-width=2C initial=-scale=3D1.0">

I want if the string begins with <meta name=3D"viewport to replace everything between the < and > (including the < and >)

If for example I have a string this:

<meta test>
    <meta name=3D"viewport" content=3D"width=3Ddevice-width=2C initial=-scale=3D1.0">
<meta 2>

After I process it, it becomes:

  <meta test>
  <meta 2>

Answer 1

In short:

Search: <meta name=3D"viewport[^>]*>

Replace: ""

Untested code:

NSString *string = @"<meta name=3D\"viewport\" content=3D\"width=3Ddevice-width=2C initial=-scale=3D1.0\">";
NSError *error = nil;
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"<meta name=3D\"viewport[^>]*>" options:NSRegularExpressionCaseInsensitive error:&error];
NSString *modifiedString = [regex stringByReplacingMatchesInString:string options:0 range:NSMakeRange(0, [string length]) withTemplate:@""];
NSLog(@"%@", modifiedString);