我有一个执行以下操作的应用程序：目录列表，下载文件，下载所有。

我有一个问题，从WebRequestMethods.Ftp.ListDirectoryDe​​tails获取文件名。它似乎是不可能这样做的每个场景。

WebRequestMethods.Ftp.ListDirectoryDe​​tails以下述方式返回LINEITEM：

- RW-R - R-- 1 FTP FTP 39979 8月1日16:02分贝到电脑2014年8月5日07-30-00.csv

我使用的第一个字符，以确定它是否是一个文件或目录。然后我分裂的空间文件和分裂中的固定指标量后得到的文件名。在我执行的问题是，如果一个文件有多个空格，则它会被错误引用更少的空间，并试图下载该文件时就不会被发现。

我不能够使用split.last（），因为文件名可以有空格，也不WebRequestMethods.Ftp.ListDirectory，因为它不允许我们到一个目录和文件之间区分不带扩展名。也不因为文件名的正则表达式可以具有在它的日期。找到一个解决方案，完全覆盖所有的情况下，将是巨大的任何帮助。

 布尔isDirectory = line.Substring（0,1）.Equals（D，System.StringComparison.OrdinalIgnoreCase）;

字符串[]与itemNames = line.Split（新[] {''，'\ T'}，StringSplitOptions.RemoveEmptyEntries）。选择（（价值指数）=＆gt;新建{值，指数}）。其中（I =＆GT ; i.index大于7）。选择（ⅰ=＆GT; i.value）.ToArray（）;
字符串VAL =的string.join（，如果itemNames）;
 

解决方案

最后的解决方案是使用正则表达式和使用组拆呢。这解决了所有的问题，让我得到的文件/目录名和它是否是一个目录或文件。

 字符串正则表达式=
@^+ //＃开始行
@（？＆LT;目录＆GT; [\  -  LD]）+ //＃文件大小
（？＆LT;许可＆GT; [\  -  RWX] {9}）@ + //＃空白\ñ
@\ S ++ //＃空白\ñ
@（小于？文件code取代; \ D +）+
@\ S ++ //＃空白\ñ
@（小于？所有者GT; \ W +）+
@\ S ++ //＃空白\ñ
@（小于？组＆gt; \ W +）+
@\ S ++ //＃空白\ñ
@（LT;大小＆GT; \ D +）+
@\ S ++ //＃空白\ñ
@（小于？一个月＆GT; \ w {3}）+ //＃月（3个字母）\ñ
@\ S ++ //＃空白\ñ
@（小于？日＆GT; \ D {1,2}）+ //＃日（1或2位数字）\ñ
@\ S ++ //＃空白\ñ
（？＆LT; timeyear＆GT; [\ D：] {4,5}）@ + //＃时间或年\ñ
@\ S ++ //＃空白\ñ
@（LT;文件名＆GT;（*））+ //＃文件名\ñ
@$; //＃行末


VAR分裂=新的正则表达式（正则表达式）.Match（线）;
字符串DIR = split.Groups [目录]的ToString（）。
。字符串文件名= split.Groups [文件名]的ToString（）;
布尔isDirectory = string.IsNullOrWhiteSpace（DIR）及！＆安培; dir.Equals（D，StringComparison.OrdinalIgnoreCase）;
 

由于：http://blogs.msdn.com/b/adarshk/archive/2004/09/15/sample-$c$c-for-parsing-ftpwebrequest-response-for-listdirectorydetails.aspx提供正则表达式。

I have an application that does the following: directory listing, download file, download all.

I have an issue with getting the file names from WebRequestMethods.Ftp.ListDirectoryDetails. It seems that it is not possible to do so for every scenario.

WebRequestMethods.Ftp.ListDirectoryDetails returns a lineItem in the following manner:

"-rw-r--r-- 1 ftp ftp 39979 Aug 01 16:02 db to pc 2014-08-05 07-30-00.csv"

I am using the first character to determine if it is a file or directory. Then I split the file on space and get the file name after a fixed index amount within the split. The issue in my implementation is that if a file has multiple spaces then it would be incorrectly referenced with less spaces and the file would not be found when attempting to download it.

I am not able use the split.last() since a file name can have spaces nor WebRequestMethods.Ftp.ListDirectory since it does not allow us to distinguish between a Directory and a file without an extension. Nor a regex since a file name can have a date in it. Any assistance in finding a solution that completely covers all cases would be great.

bool isDirectory = line.Substring(0,1).Equals("d", System.StringComparison.OrdinalIgnoreCase);

string[] itemNames = line.Split(new[] { ' ', '\t' }, StringSplitOptions.RemoveEmptyEntries).Select((value, index) => new { value, index }).Where(i => i.index > 7).Select(i => i.value).ToArray();
string val = string.Join(" ", itemNames);

The final solution was to use regex and split it using groups. This resolved all issues and allowed me to get the file / directory name and whether it was a directory or file.

string regex =
@"^" +                          //# Start of line
@"(?<dir>[\-ld])" +             //# File size          
@"(?<permission>[\-rwx]{9})" +  //# Whitespace          \n
@"\s+" +                        //# Whitespace          \n
@"(?<filecode>\d+)" +
@"\s+" +                        //# Whitespace          \n
@"(?<owner>\w+)" +
@"\s+" +                        //# Whitespace          \n
@"(?<group>\w+)" +
@"\s+" +                        //# Whitespace          \n
@"(?<size>\d+)" +
@"\s+" +                        //# Whitespace          \n
@"(?<month>\w{3})" +            //# Month (3 letters)   \n
@"\s+" +                        //# Whitespace          \n
@"(?<day>\d{1,2})" +            //# Day (1 or 2 digits) \n
@"\s+" +                        //# Whitespace          \n
@"(?<timeyear>[\d:]{4,5})" +    //# Time or year        \n
@"\s+" +                        //# Whitespace          \n
@"(?<filename>(.*))" +          //# Filename            \n
@"$";                           //# End of line


var split = new Regex(regex).Match(line);
string dir = split.Groups["dir"].ToString();
string filename = split.Groups["filename"].ToString();
bool isDirectory = !string.IsNullOrWhiteSpace(dir) && dir.Equals("d", StringComparison.OrdinalIgnoreCase);

Thanks to: http://blogs.msdn.com/b/adarshk/archive/2004/09/15/sample-code-for-parsing-ftpwebrequest-response-for-listdirectorydetails.aspx for providing the regex.