删除目标c中的特殊字符

Question

我想从文件名中删除特殊字符.请找到以下代码.我有删除的问题.从文件名,我的代码也删除了.in扩展名.

Ex filename = atf.bac.xlsx
Expected result: atfbac.xlsx
Current Behavior:atfbacxlsx


NSCharacterSet *doNotWant = [NSCharacterSet characterSetWithCharactersInString:@".#%;:?,/|\[]{}@$%^*"];
fileName = [[fileName componentsSeparatedByCharactersInSet: doNotWant] componentsJoinedByString: @""];

Answer 1

您必须将字符串视为路径或URL中的文件名

• 暂时保存文件扩展名.
• 删除文件扩展名.
• 删除不需要的字符.

• 添加文件扩展名.

  NSString *fileName = @"atf.bac.xlsx";
  NSString *extension = fileName.pathExtension;
  NSString *baseName = [fileName stringByDeletingPathExtension];
  NSCharacterSet *doNotWant = [NSCharacterSet characterSetWithCharactersInString:@".#%;:?,/|\[]{}@$%^*"];
  fileName = [[[baseName componentsSeparatedByCharactersInSet: doNotWant] componentsJoinedByString: @""] stringByAppendingPathExtension:extension];
  NSLog(@"%@",fileName);