/// <summary>
/// Transform a windows file name according to the Zip file naming conventions.
/// </summary>
/// <param name="name">The file name to transform.</param>
/// <returns>The transformed name.</returns>
public string TransformFile(string name)
{
if (name != null)
{
string lowerName = name.ToLower();
if ((trimPrefix_ != null) && (lowerName.IndexOf(trimPrefix_) == 0))
{
name = name.Substring(trimPrefix_.Length);
}
name = name.Replace(@"\", "/");
name = WindowsPathUtils.DropPathRoot(name);
// Drop any leading slashes.
while ((name.Length > 0) && (name[0] == '/'))
{
name = name.Remove(0, 1);
}
// Drop any trailing slashes.
while ((name.Length > 0) && (name[name.Length - 1] == '/'))
{
name = name.Remove(name.Length - 1, 1);
}
// Convert consecutive // characters to /
int index = name.IndexOf("//");
while (index >= 0)
{
name = name.Remove(index, 1);
index = name.IndexOf("//");
}
name = MakeValidName(name, '_');
}
else
{
name = string.Empty;
}
return(name);
}
/// <summary>
/// Force a name to be valid by replacing invalid characters with a fixed value
/// </summary>
/// <param name="name">The name to make valid</param>
/// <param name="replacement">The replacement character to use for any invalid characters.</param>
/// <returns>Returns a valid name</returns>
public static string MakeValidName(string name, char replacement)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
name = WindowsPathUtils.DropPathRoot(name.Replace("/", @"\"));
// Drop any leading slashes.
while ((name.Length > 0) && (name[0] == '\\'))
{
name = name.Remove(0, 1);
}
// Drop any trailing slashes.
while ((name.Length > 0) && (name[name.Length - 1] == '\\'))
{
name = name.Remove(name.Length - 1, 1);
}
// Convert consecutive \\ characters to \
int index = name.IndexOf(@"\\");
while (index >= 0)
{
name = name.Remove(index, 1);
index = name.IndexOf(@"\\");
}
// Convert any invalid characters using the replacement one.
index = name.IndexOfAny(InvalidEntryChars);
if (index >= 0)
{
StringBuilder builder = new StringBuilder(name);
while (index >= 0)
{
builder[index] = replacement;
if (index >= name.Length)
{
index = -1;
}
else
{
index = name.IndexOfAny(InvalidEntryChars, index + 1);
}
}
name = builder.ToString();
}
// Check for names greater than MaxPath characters.
// TODO: Were is CLR version of MaxPath defined? Can't find it in Environment.
if (name.Length > MaxPath)
{
throw new PathTooLongException();
}
return(name);
}