objc-dotenv.m

@interface Environment: NSObject

@property (nonatomic, strong) NSString *domain;
@property (nonatomic, strong) NSString *name;
@property (nonatomic, strong) NSString *facebookKey;

-(id)initWithData:(NSDictionary *)data;

@end
  
@implementation Environment

-(id)initWithData:(NSDictionary *)data {
  self = [super init];
  self.domain = data[@"domain"];
  self.name = data[@"name"];
  self.facebookKey = data[@"facebook"];
  return self;
}

@end

-(NSArray*)loadEnvironmentsFromDotEnv {
  NSString *path = [[NSBundle mainBundle] pathForResource:@".env" ofType:nil];
  NSString *rawEnv = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
  NSArray *lines = [rawEnv componentsSeparatedByString:@"\n"];
  NSMutableDictionary *envData = [NSMutableDictionary new];
  for (NSString *line in lines) {
    NSString *lineTrimmed = [line stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
    if ([lineTrimmed length] == 0) {
      continue;
    }
    NSArray *lineComponents = [line componentsSeparatedByString:@"="];
    NSString *key = lineComponents[0];
    NSString *rawValue = lineComponents[1];
    NSArray *valueComponents = [rawValue componentsSeparatedByString:@","];
    if ([valueComponents count] > 1) {
      [envData setObject:valueComponents forKey:key];
    } else {
      [envData setObject:rawValue forKey:key];
    }
  }
  NSMutableArray *environments = [NSMutableArray new];
  for (NSString *envKey in envData[@"environments"]) {
    NSMutableDictionary *envDict = [NSMutableDictionary new];
    for (NSString *key in envData) {
      NSArray *keyComponents = [key componentsSeparatedByString:envKey];
      if ([keyComponents count] > 1) {
        [envDict setObject:envData[key] forKey:keyComponents[1]];
      }
    }
    [environments addObject:[[Environment alloc] initWithData: envDict]];
  }
  
  return environments;
}