增加换肤功能

Pods/AliyunOSSiOS/AliyunOSSSDK/NSDate+OSS.m

@@ -0,0 +1,68 @@
+//
+//  NSDate+OSS.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/7/31.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "NSDate+OSS.h"
+
+@implementation NSDate (OSS)
+
+NSString * const serverReturnDateFormat = @"EEE, dd MMM yyyy HH:mm:ss z";
+
+static NSTimeInterval _clockSkew = 0.0;
+
++ (void)oss_setClockSkew:(NSTimeInterval)clockSkew {
+    @synchronized(self) {
+        _clockSkew = clockSkew;
+    }
+}
+
++ (NSDate *)oss_clockSkewFixedDate {
+    NSTimeInterval skew = 0.0;
+    @synchronized(self) {
+        skew = _clockSkew;
+    }
+    return [[NSDate date] dateByAddingTimeInterval:(-1 * skew)];
+}
+
++ (NSDate *)oss_dateFromString:(NSString *)string {
+    NSDateFormatter *dateFormatter = [NSDateFormatter new];
+    dateFormatter.timeZone = [NSTimeZone timeZoneWithName:@"GMT"];
+    dateFormatter.locale = [NSLocale localeWithLocaleIdentifier:@"en_US"];
+    dateFormatter.dateFormat = serverReturnDateFormat;
+    
+    return [dateFormatter dateFromString:string];
+}
+
+- (NSString *)oss_asStringValue {
+    NSDateFormatter *dateFormatter = [NSDateFormatter new];
+    dateFormatter.timeZone = [NSTimeZone timeZoneWithName:@"GMT"];
+    dateFormatter.locale = [NSLocale localeWithLocaleIdentifier:@"en_US"];
+    dateFormatter.dateFormat = serverReturnDateFormat;
+    
+    return [dateFormatter stringFromDate:self];
+}
+
++ (NSDate *)oss_dateFromString:(NSString *)string
+                    dateFormat:(NSString *)dateFormat {
+    NSDateFormatter *dateFormatter = [NSDateFormatter new];
+    dateFormatter.timeZone = [NSTimeZone timeZoneWithName:@"GMT"];
+    dateFormatter.locale = [NSLocale localeWithLocaleIdentifier:@"en_US"];
+    dateFormatter.dateFormat = dateFormat;
+    
+    return [dateFormatter dateFromString:string];
+}
+
+- (NSString *)oss_asStringValueWithDateFormat:(NSString *)dateFormat {
+    NSDateFormatter *dateFormatter = [NSDateFormatter new];
+    dateFormatter.timeZone = [NSTimeZone timeZoneWithName:@"GMT"];
+    dateFormatter.locale = [NSLocale localeWithLocaleIdentifier:@"en_US"];
+    dateFormatter.dateFormat = dateFormat;
+    
+    return [dateFormatter stringFromDate:self];
+}
+
+@end