public virtual Stream Open(IServiceContainer services, string fileName)
{
if (string.IsNullOrEmpty(fileName))
{
throw new ArgumentNullException("fileName");
}
WriterDebugger debugger = ( WriterDebugger )services.GetService(typeof(WriterDebugger));
//if( debugger != null && debugger.Enabled )
//{
// debugger.WriteLine( string.Format(
// WriterStrings.Loading_FileName ,
// fileName ));
//}
UrlStream stream = UrlStream.Open(fileName);
//if (debugger != null)
//{
// if (stream == null)
// {
// debugger.WriteLine(WriterStrings.Fail);
// }
// else
// {
// debugger.WriteLine(string.Format(
// WriterStrings.LoadComplete_Size,
// WriterUtils.FormatByteSize( (int)stream.Length)));
// }
//}
return(stream);
}
/// <summary>
/// 打开文件流
/// </summary>
/// <param name="url">URL地址</param>
/// <returns>创建的流对象</returns>
public static UrlStream Open(string url)
{
if (string.IsNullOrEmpty(url))
{
throw new ArgumentNullException("url");
}
url = url.Trim();
if (url.Length == 0)
{
throw new ArgumentNullException("url");
}
if (url.IndexOf(":") > 0)
{
Uri uri = new Uri(url);
if (uri.Scheme == Uri.UriSchemeFile)
{
string fn = uri.LocalPath;
if (System.IO.File.Exists(fn) == false)
{
throw new System.IO.FileNotFoundException(fn);
}
UrlStream stream = new UrlStream();
stream._BaseStream = new System.IO.FileStream(
fn,
FileMode.Open,
FileAccess.Read);
return(stream);
}
else
{
using (System.Net.WebClient client = new System.Net.WebClient())
{
//Uri uri2 = new Uri(url);
byte[] bs = client.DownloadData(url);
UrlStream stream = new UrlStream();
stream._BaseStream = new System.IO.MemoryStream(bs);
return(stream);
}
}
}
else
{
// 可能是相对路径,读取本地文件路径
string fn = System.IO.Path.Combine(System.Environment.CurrentDirectory, url);
UrlStream stream = new UrlStream();
stream._BaseStream = new System.IO.FileStream(
fn,
FileMode.Open,
FileAccess.Read);
return(stream);
}
//return null;
}
public virtual Stream Save(IServiceContainer services, string fileName)
{
if (string.IsNullOrEmpty(fileName))
{
throw new ArgumentNullException("fileName");
}
UrlStream stream = UrlStream.Save(fileName);
//WriterDebugger debugger = (WriterDebugger)services.GetService(typeof(WriterDebugger));
//if (debugger != null && debugger.Enabled)
//{
// debugger.WriteLine(string.Format(
// WriterStrings.Saving_FileName ,
// fileName));
//}
return(stream);
}
/// <summary>
/// 打开保存数据的流
/// </summary>
/// <param name="url">URL字符串</param>
/// <returns>创建的流对象</returns>
public static UrlStream Save(string url)
{
if (string.IsNullOrEmpty(url))
{
throw new ArgumentNullException("url");
}
url = url.Trim();
if (url.Length == 0)
{
throw new ArgumentNullException("url");
}
if (url.IndexOf(":") > 0)
{
Uri uri = new Uri(url);
if (uri.Scheme == Uri.UriSchemeFile)
{
string fn = uri.LocalPath;
UrlStream stream = new UrlStream();
stream._BaseStream = new System.IO.FileStream(
fn,
FileMode.Create,
FileAccess.Write);
return(stream);
}
else
{
UrlStream stream = new UrlStream();
stream._BaseStream = new System.IO.MemoryStream();
stream._SaveUrl = url;
return(stream);
}
}
else
{
// 可能是相对路径,读取本地文件路径
string fn = System.IO.Path.Combine(System.Environment.CurrentDirectory, url);
UrlStream stream = new UrlStream();
stream._BaseStream = new System.IO.FileStream(
fn,
FileMode.Create,
FileAccess.Write);
return(stream);
}
}
