/// <summary>
/// Initializes a new instance of the <see cref="WADFileBase" /> class.
/// </summary>
/// <param name="format">
/// The value for the <see cref="WADFileBase.Format" /> property.
/// </param>
/// <param name="stream">
/// The value for the <see cref="WADFileBase.Stream" /> property.
/// </param>
/// <param name="ownsStream">
/// The value for the <see cref="WADFileBase._OWNS_STREAM" /> field.
/// </param>
/// <param name="sync">
/// The custom value for the <see cref="WADObject._SYNC" /> field.
/// </param>
/// <exception cref="ArgumentException">
/// <paramref name="stream" /> is not readable / seekable.
/// </exception>
/// <exception cref="ArgumentNullException">
/// <paramref name="stream" /> is <see langword="null" />.
/// </exception>
protected WADFileBase(WADFormat format, Stream stream, bool ownsStream = true, object sync = null)
: base(sync: sync)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
if (stream.CanRead == false)
{
throw new ArgumentException("Not readable!", "stream");
}
if (stream.CanSeek == false)
{
throw new ArgumentException("Not seekable!", "stream");
}
this._FORMAT = format;
this._STREAM = stream;
this._OWNS_STREAM = ownsStream;
}
/// <summary>
/// Creates instances from a stream.
/// </summary>
/// <param name="format">The format.</param>
/// <param name="stream">The stream.</param>
/// <param name="bufferSize">The custom buffer size to use to read from <paramref name="stream" />.</param>
/// <returns>The list of lazy loaded instances.</returns>
/// <exception cref="ArgumentException">
/// <paramref name="stream" /> is not readable.
/// </exception>
/// <exception cref="ArgumentNullException">
/// <paramref name="stream" /> is <see langword="null" />.
/// </exception>
/// <exception cref="ArgumentOutOfRangeException">
/// <paramref name="bufferSize" /> is less than 1.
/// </exception>
public static IEnumerable <IWADFile> FromStream(Stream stream, WADFormat format = WADFormat.Default, int?bufferSize = null)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
if (stream.CanRead == false)
{
throw new ArgumentException("stream");
}
if (bufferSize < 1)
{
throw new ArgumentOutOfRangeException("bufferSize", bufferSize,
"Is less than 1!");
}
bool hasNext;
do
{
hasNext = false;
byte[] buffer;
buffer = new byte[4];
if (stream.Read(buffer, 0, buffer.Length) != buffer.Length)
{
continue;
}
var header = Encoding.ASCII.GetString(buffer).ToUpper().Trim();
IWADFile result = null;
var wadStream = new MemoryStream();
try
{
Action copyToWadStream = () =>
{
if (!bufferSize.HasValue)
{
stream.CopyTo(wadStream);
}
else
{
stream.CopyTo(wadStream, bufferSize.Value);
}
wadStream.Position = 0;
};
switch (header)
{
case "IWAD":
copyToWadStream();
result = new IWAD(format, wadStream, true);
break;
case "PWAD":
copyToWadStream();
result = new PWAD(format, wadStream, true);
break;
}
}
catch (Exception ex)
{
wadStream.Dispose();
throw ex;
}
if (result != null)
{
hasNext = true;
yield return(result);
}
}while (hasNext);
}
/// <summary>
/// Builds a file.
/// </summary>
/// <param name="initialLumpName">Name of the initial lump.</param>
/// <param name="format">The format to use.</param>
/// <returns>The created file.</returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="initialLumpName" /> is invalid.
/// </exception>
/// <exception cref="ArgumentNullException">
/// <paramref name="initialLumpName" /> is <see langword="null" />.
/// </exception>
/// <exception cref="ArgumentOutOfRangeException">
/// Length of <paramref name="initialLumpName" /> is greater than 8.
/// </exception>
public IWADFile Build(string initialLumpName, WADFormat format = WADFormat.Default)
{
if (initialLumpName == null)
{
throw new ArgumentNullException("initialLumpName");
}
initialLumpName = initialLumpName.ToUpper().Trim();
if (initialLumpName == string.Empty)
{
throw new ArgumentException("initialLumpName");
}
var initialLumpNameLength = Encoding.ASCII.GetBytes(initialLumpName).Length;
if (initialLumpNameLength > 8)
{
throw new ArgumentOutOfRangeException("initialLumpName.Length", initialLumpNameLength,
"Cannot be larger than 8 chars!");
}
return(this.InvokeForDisposable(
func: (obj, state) =>
{
var builder = (WADFileBuilder)obj;
using (var temp = new MemoryStream())
{
// header
temp.Write(Encoding.ASCII.GetBytes("PWAD"), 0, 4);
// these are overwritten later
temp.Write(new byte[8], 0, 8);
var newLumpList = new List <Lump>();
var firstLump = new Lump();
firstLump.Name = state.FirstLumpName;
firstLump.Position = 12;
firstLump.Size = 0;
newLumpList.Add(firstLump);
// write lump data
foreach (var lump in builder._LUMPS)
{
using (var lumpStream = lump.GetStream())
{
var newLump = new Lump();
newLump.Name = lump.Name;
newLump.Position = (int)temp.Position;
newLump.Size = (int)lumpStream.Length;
lumpStream.CopyTo(temp);
newLumpList.Add(newLump);
}
}
var secondLump = newLumpList.Skip(1).FirstOrDefault();
if (secondLump != null)
{
firstLump.Position = secondLump.Position;
}
var numberOfLumps = newLumpList.Count;
var posOfEntries = (int)temp.Position;
// now write entries
foreach (var nl in newLumpList)
{
var lumpNameChars = new List <byte>(Encoding.ASCII.GetBytes(nl.Name ?? string.Empty));
while (lumpNameChars.Count < 8)
{
lumpNameChars.Add(0); // fill with zero chars
}
if (lumpNameChars.Count > 8)
{
throw new ArgumentOutOfRangeException("lumpNameChars.Count", lumpNameChars.Count,
"Cannot be larger than 8 chars!");
}
var lumpPos = GetBytes(nl.Position);
var lumpSize = GetBytes(nl.Size);
var lumpName = lumpNameChars.ToArray();
temp.Write(lumpPos, 0, lumpPos.Length);
temp.Write(lumpSize, 0, lumpSize.Length);
temp.Write(lumpName, 0, lumpName.Length);
}
// update header
temp.Position = 4;
temp.Write(GetBytes(numberOfLumps), 0, 4);
temp.Write(GetBytes(posOfEntries), 0, 4);
temp.Position = 0;
return WADFileFactory.FromStream(temp, state.Format).Single();
}
},
funcState: new
{
FirstLumpName = initialLumpName,
Format = format,
}));
}
internal IWAD(WADFormat format, Stream stream, bool ownsStream = true, object sync = null)
: base(format: format,
stream: stream, ownsStream: ownsStream,
sync: sync)
{
}
internal IWAD(WADFormat format, Stream stream, bool ownsStream = true, object sync = null)
: base(format: format,
stream: stream, ownsStream: ownsStream,
sync: sync)
{
}
/// <summary>
/// Creates instances from a stream.
/// </summary>
/// <param name="format">The format.</param>
/// <param name="stream">The stream.</param>
/// <param name="bufferSize">The custom buffer size to use to read from <paramref name="stream" />.</param>
/// <returns>The list of lazy loaded instances.</returns>
/// <exception cref="ArgumentException">
/// <paramref name="stream" /> is not readable.
/// </exception>
/// <exception cref="ArgumentNullException">
/// <paramref name="stream" /> is <see langword="null" />.
/// </exception>
/// <exception cref="ArgumentOutOfRangeException">
/// <paramref name="bufferSize" /> is less than 1.
/// </exception>
public static IEnumerable<IWADFile> FromStream(Stream stream, WADFormat format = WADFormat.Default, int? bufferSize = null)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
if (stream.CanRead == false)
{
throw new ArgumentException("stream");
}
if (bufferSize < 1)
{
throw new ArgumentOutOfRangeException("bufferSize", bufferSize,
"Is less than 1!");
}
bool hasNext;
do
{
hasNext = false;
byte[] buffer;
buffer = new byte[4];
if (stream.Read(buffer, 0, buffer.Length) != buffer.Length)
{
continue;
}
var header = Encoding.ASCII.GetString(buffer).ToUpper().Trim();
IWADFile result = null;
var wadStream = new MemoryStream();
try
{
Action copyToWadStream = () =>
{
if (!bufferSize.HasValue)
{
stream.CopyTo(wadStream);
}
else
{
stream.CopyTo(wadStream, bufferSize.Value);
}
wadStream.Position = 0;
};
switch (header)
{
case "IWAD":
copyToWadStream();
result = new IWAD(format, wadStream, true);
break;
case "PWAD":
copyToWadStream();
result = new PWAD(format, wadStream, true);
break;
}
}
catch (Exception ex)
{
wadStream.Dispose();
throw ex;
}
if (result != null)
{
hasNext = true;
yield return result;
}
}
while (hasNext);
}
/// <summary>
/// Builds a file.
/// </summary>
/// <param name="initialLumpName">Name of the initial lump.</param>
/// <param name="format">The format to use.</param>
/// <returns>The created file.</returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="initialLumpName" /> is invalid.
/// </exception>
/// <exception cref="ArgumentNullException">
/// <paramref name="initialLumpName" /> is <see langword="null" />.
/// </exception>
/// <exception cref="ArgumentOutOfRangeException">
/// Length of <paramref name="initialLumpName" /> is greater than 8.
/// </exception>
public IWADFile Build(string initialLumpName, WADFormat format = WADFormat.Default)
{
if (initialLumpName == null)
{
throw new ArgumentNullException("initialLumpName");
}
initialLumpName = initialLumpName.ToUpper().Trim();
if (initialLumpName == string.Empty)
{
throw new ArgumentException("initialLumpName");
}
var initialLumpNameLength = Encoding.ASCII.GetBytes(initialLumpName).Length;
if (initialLumpNameLength > 8)
{
throw new ArgumentOutOfRangeException("initialLumpName.Length", initialLumpNameLength,
"Cannot be larger than 8 chars!");
}
return this.InvokeForDisposable(
func: (obj, state) =>
{
var builder = (WADFileBuilder)obj;
using (var temp = new MemoryStream())
{
// header
temp.Write(Encoding.ASCII.GetBytes("PWAD"), 0, 4);
// these are overwritten later
temp.Write(new byte[8], 0, 8);
var newLumpList = new List<Lump>();
var firstLump = new Lump();
firstLump.Name = state.FirstLumpName;
firstLump.Position = 12;
firstLump.Size = 0;
newLumpList.Add(firstLump);
// write lump data
foreach (var lump in builder._LUMPS)
{
using (var lumpStream = lump.GetStream())
{
var newLump = new Lump();
newLump.Name = lump.Name;
newLump.Position = (int)temp.Position;
newLump.Size = (int)lumpStream.Length;
lumpStream.CopyTo(temp);
newLumpList.Add(newLump);
}
}
var secondLump = newLumpList.Skip(1).FirstOrDefault();
if (secondLump != null)
{
firstLump.Position = secondLump.Position;
}
var numberOfLumps = newLumpList.Count;
var posOfEntries = (int)temp.Position;
// now write entries
foreach (var nl in newLumpList)
{
var lumpNameChars = new List<byte>(Encoding.ASCII.GetBytes(nl.Name ?? string.Empty));
while (lumpNameChars.Count < 8)
{
lumpNameChars.Add(0); // fill with zero chars
}
if (lumpNameChars.Count > 8)
{
throw new ArgumentOutOfRangeException("lumpNameChars.Count", lumpNameChars.Count,
"Cannot be larger than 8 chars!");
}
var lumpPos = GetBytes(nl.Position);
var lumpSize = GetBytes(nl.Size);
var lumpName = lumpNameChars.ToArray();
temp.Write(lumpPos, 0, lumpPos.Length);
temp.Write(lumpSize, 0, lumpSize.Length);
temp.Write(lumpName, 0, lumpName.Length);
}
// update header
temp.Position = 4;
temp.Write(GetBytes(numberOfLumps), 0, 4);
temp.Write(GetBytes(posOfEntries), 0, 4);
temp.Position = 0;
return WADFileFactory.FromStream(temp, state.Format).Single();
}
},
funcState: new
{
FirstLumpName = initialLumpName,
Format = format,
});
}
