#import <Foundation/Foundation.h>
#define PATH [NSString stringWithFormat:@"%@/Documents/Caches",NSHomeDirectory()]
@interface CachesCenter : NSObject
@property (nonatomic, copy) NSData *cachedData;
@property (nonatomic, copy) NSString *cacheFileName;
-(NSString *)getHomePathByCacheFileName:(NSString *)cacheFileName;
-(void)saveData:(NSData *)data WithFileName:(NSString *)fileName;
-(NSData *)getDataByFileName:(NSString *)fileName;
-(BOOL)isExistFile:(NSString *)fileName;
-(NSMutableDictionary *)fechAllFileData;
-(NSString *)clearCaches;
-(NSInteger)getAllCachesSize;
@end
//
#import "CachesCenter.h"
@interface CachesCenter()
{
NSFileManager *_manager;
}
@end
@implementation CachesCenter
- (instancetype)init
{
self = [super init];
if (self) {
if(!_manager)
{
_manager = [[NSFileManager alloc] init];
NSString *path = [NSString stringWithFormat:@"%@",PATH];
BOOL ret = [_manager fileExistsAtPath:path];
if(!ret)
{
[_manager createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil];
}
}
}
return self;
}
//获取缓存"根路径+文件名"
-(NSString *)getHomePathByCacheFileName:(NSString *)cacheFileName
{
NSString *path = [NSString stringWithFormat:@"%@/%@",PATH,cacheFileName];
return path;
}
//保存文件
-(void)saveData:(NSData *)data WithFileName:(NSString *)fileName
{
NSString *homePath = [self getHomePathByCacheFileName:fileName];
BOOL ret = [data writeToFile:homePath atomically:YES];
if(ret)
{
NSLog(@"data save success!");
}
else
{
NSLog(@"data save fail!");
}
}
//读取文件
-(NSData *)getDataByFileName:(NSString *)fileName
{
NSString *homePath = [self getHomePathByCacheFileName:fileName];
BOOL ret = [self isExistFile:fileName];
if(ret)
{
NSData *data = [[NSData alloc] initWithContentsOfFile:homePath];
if(data.length>0)
{
return data;
}
else
{
NSLog(@"file is Empty!");
return nil;
}
}
else
{
NSLog(@"file isn`t exist!");
return nil;
}
}
//判断是否存在文件
-(BOOL)isExistFile:(NSString *)fileName
{
NSString *homePath = [self getHomePathByCacheFileName:fileName];
_manager = [[NSFileManager alloc] init];
BOOL ret = [_manager fileExistsAtPath:homePath isDirectory:nil];
return ret;
}
//获取所有文件数据
-(NSMutableDictionary *)fechAllFileData
{
NSMutableDictionary *dict = nil;
NSFileManager *manager = [[NSFileManager alloc] init];
NSMutableArray *fileNameArray = [[NSMutableArray alloc] init];
NSMutableArray *fileDataArray = [[NSMutableArray alloc] init];
NSArray *array = [manager contentsOfDirectoryAtPath:PATH error:nil];
for (NSString *fileName in array)
{
if(![[fileName substringToIndex:1] isEqualToString:@"."])
{
NSString *homPath = [self getHomePathByCacheFileName:fileName];
NSData *data = [[NSData alloc] initWithContentsOfFile:homPath];
[fileNameArray addObject:fileName];
[fileDataArray addObject:data];
NSLog(@"fileName:%@",fileName);
}
}
if(fileNameArray.count == fileDataArray.count)
{
dict = [[NSMutableDictionary alloc] initWithObjects:fileDataArray forKeys:fileNameArray];
}
return dict;
}
//清空缓存
-(NSString *)clearCaches
{
NSMutableDictionary *dic = [[NSMutableDictionary alloc] initWithDictionary:[self fechAllFileData]];
if ([dic allKeys].count>0)
{
for (NSString *filename in [dic allKeys])
{
NSString *homePath = [self getHomePathByCacheFileName:filename];
NSFileManager *manager = [[NSFileManager alloc] init];
[manager removeItemAtPath:homePath error:nil];
}
return @"清理完成!";
}
else
{
return @"暂无缓存文件!";
}
}
//获取缓存大小
-(NSInteger)getAllCachesSize
{
NSFileManager *manager = [[NSFileManager alloc] init];
//单位是bit
return (NSInteger)[[manager attributesOfItemAtPath:PATH error:nil] fileSize];
}
@end