public void Create(StorageFileInfo file, Stream content)
{
if (file == null)
{
throw new ArgumentNullException("file");
}
var storage = this.Storage;
if (storage == null)
{
throw new InvalidOperationException("The Storage is null.");
}
//如果文件路径为空则为它设置一个有效的文件路径
if (string.IsNullOrWhiteSpace(file.Path))
{
file.Path = this.GetFilePath(file);
}
storage.SetValue(GetFileKey(file.FileId), file.ToDictionary());
var collection = storage.GetValue(GetFileCollectionKey(file.BucketId)) as ICollection <string>;
if (collection != null)
{
collection.Add(file.FileId.ToString("n"));
}
else
{
storage.SetValue(GetFileCollectionKey(file.BucketId), new string[]
{
file.FileId.ToString("n")
});
}
if (content != null)
{
var path = JF.IO.Path.Parse(file.Path);
//确认文件的所在目录是存在的，如果不存在则创建相应的目录
FileSystem.Directory.Create(path.Scheme + ":" + path.DirectoryName);
//创建或打开指定路径的文件流
using (var stream = FileSystem.File.Open(file.Path, FileMode.Create, FileAccess.Write))
{
//将文件内容写入到创建或打开的文件流中
content.CopyTo(stream);
}
}
}
public static StorageFileInfo FromDictionary(IDictionary dictionary)
{
if (dictionary == null || dictionary.Count < 1)
{
return(null);
}
object bucketId, fileId, name, type, size, path, totalVisits, createdTime, modifiedTime, visitedTime;
if (!dictionary.TryGetValue("BucketId", out bucketId))
{
return(null);
}
if (!dictionary.TryGetValue("FileId", out fileId))
{
return(null);
}
dictionary.TryGetValue("Name", out name);
dictionary.TryGetValue("Type", out type);
dictionary.TryGetValue("Size", out size);
dictionary.TryGetValue("Path", out path);
dictionary.TryGetValue("TotalVisits", out totalVisits);
dictionary.TryGetValue("CreatedTime", out createdTime);
dictionary.TryGetValue("ModifiedTime", out modifiedTime);
dictionary.TryGetValue("VisitedTime", out visitedTime);
var result = new StorageFileInfo(JF.Common.Convert.ConvertValue <int>(bucketId), JF.Common.Convert.ConvertValue <Guid>(fileId))
{
Name = JF.Common.Convert.ConvertValue <string>(name), Type = JF.Common.Convert.ConvertValue <string>(type), Size = JF.Common.Convert.ConvertValue <long>(size), Path = JF.Common.Convert.ConvertValue <string>(path), TotalVisits = JF.Common.Convert.ConvertValue <int>(totalVisits), CreatedTime = JF.Common.Convert.ConvertValue <DateTime>(createdTime), ModifiedTime = JF.Common.Convert.ConvertValue <DateTime?>(modifiedTime), VisitedTime = JF.Common.Convert.ConvertValue <DateTime?>(visitedTime),
};
foreach (var key in dictionary.Keys)
{
if (key == null)
{
continue;
}
if (key.ToString().StartsWith(EXTENDEDPROPERTIESPREFIX))
{
result.ExtendedProperties[key.ToString().Substring(EXTENDEDPROPERTIESPREFIX.Length)] = dictionary[key];
}
}
return(result);
}
private string GetFilePath(StorageFileInfo fileInfo)
{
var timestamp = fileInfo.CreatedTime;
var parameters = JF.Collections.DictionaryExtension.ToDictionary <string, string>(Environment.GetEnvironmentVariables());
parameters.Add("date", timestamp.ToString("yyyyMMdd"));
parameters.Add("time", timestamp.ToString("HHmmss"));
parameters.Add("year", timestamp.Year.ToString("0000"));
parameters.Add("month", timestamp.Month.ToString("00"));
parameters.Add("day", timestamp.Day.ToString("00"));
var resolvedPath = this.ResolveTextWithParameters(this.GetBucketPath(fileInfo.BucketId), parameters);
//返回当前文件的完整虚拟路径
return(JF.IO.Path.Combine(resolvedPath, string.Format("[{0}]{1:n}{2}", fileInfo.BucketId, fileInfo.FileId, System.IO.Path.GetExtension(fileInfo.Name).ToLowerInvariant())));
}
public StorageFileInfo GetInfo(Guid fileId)
{
var storage = this.Storage;
if (storage == null)
{
throw new InvalidOperationException("The Storage is null.");
}
var dictionary = storage.GetValue(GetFileKey(fileId)) as IDictionary;
if (dictionary != null)
{
return(StorageFileInfo.FromDictionary(dictionary));
}
return(null);
}
public Stream Open(Guid fileId, out StorageFileInfo info)
{
var storage = this.Storage;
if (storage == null)
{
throw new InvalidOperationException("The Storage is null.");
}
info = null;
var dictionary = storage.GetValue(GetFileKey(fileId)) as IDictionary;
if (dictionary == null || dictionary.Count < 1)
{
return(null);
}
info = StorageFileInfo.FromDictionary(dictionary);
if (dictionary is JF.Common.IAccumulator)
{
((JF.Common.IAccumulator)dictionary).Increment("TotalVisits");
}
else
{
long totalVisits = 0;
dictionary.TryGetValue <long>("TotalVisits", out totalVisits);
dictionary["TotalVisits"] = totalVisits + 1;
}
dictionary["VisitedTime"] = DateTime.Now;
if (string.IsNullOrWhiteSpace(info.Path))
{
return(null);
}
return(FileSystem.File.Open(info.Path, FileMode.Open, FileAccess.ReadWrite, FileShare.Read));
}
public Guid?Copy(Guid fileId, int bucketId)
{
var storage = this.Storage;
if (storage == null)
{
throw new InvalidOperationException("The Storage is null.");
}
var info = this.GetInfo(fileId);
if (info == null)
{
return(null);
}
if (info.BucketId == bucketId)
{
return(fileId);
}
var newInfo = new StorageFileInfo(bucketId, Guid.NewGuid())
{
Name = info.Name, Type = info.Type, Size = info.Size, Path = info.Path,
};
if (info.HasExtendedProperties)
{
foreach (var entry in info.ExtendedProperties)
{
newInfo.ExtendedProperties.Add(entry.Key, entry.Value);
}
}
this.Create(newInfo, null);
return(newInfo.FileId);
}