public GraphSerializationContext(BinaryReader reader, GraphNode[] id2NodeMapping, uint graphIndex, GraphMeta meta)
{
this.reader = reader;
this.id2NodeMapping = id2NodeMapping;
this.graphIndex = graphIndex;
this.meta = meta;
}
private GraphMeta DeserializeBinaryMeta(ZipEntry entry)
{
var meta = new GraphMeta();
var reader = GetBinaryReader(entry);
if (reader.ReadString() != "A*")
{
throw new System.Exception("Invalid magic number in saved data");
}
int major = reader.ReadInt32();
int minor = reader.ReadInt32();
int build = reader.ReadInt32();
int revision = reader.ReadInt32();
// Required because when saving a version with a field not set, it will save it as -1
// and then the Version constructor will throw an exception (which we do not want)
if (major < 0)
{
meta.version = new Version(0, 0);
}
else if (minor < 0)
{
meta.version = new Version(major, 0);
}
else if (build < 0)
{
meta.version = new Version(major, minor);
}
else if (revision < 0)
{
meta.version = new Version(major, minor, build);
}
else
{
meta.version = new Version(major, minor, build, revision);
}
meta.graphs = reader.ReadInt32();
meta.guids = new List <string>();
int count = reader.ReadInt32();
for (int i = 0; i < count; i++)
{
meta.guids.Add(reader.ReadString());
}
meta.typeNames = new List <string>();
count = reader.ReadInt32();
for (int i = 0; i < count; i++)
{
meta.typeNames.Add(reader.ReadString());
}
return(meta);
}
public void OpenSerialize()
{
// Create a new zip file, here we will store all the data
zipStream = new MemoryStream();
#if NETFX_CORE
zip = new ZipFile(zipStream, System.IO.Compression.ZipArchiveMode.Create);
#else
zip = new ZipFile();
zip.AlternateEncoding = System.Text.Encoding.UTF8;
zip.AlternateEncodingUsage = ZipOption.Always;
#endif
meta = new GraphMeta();
}
public bool OpenDeserialize(byte[] bytes)
{
// Copy the bytes to a stream
zipStream = new MemoryStream();
zipStream.Write(bytes, 0, bytes.Length);
zipStream.Position = 0;
try {
#if NETFX_CORE
zip = new ZipFile(zipStream);
#else
zip = ZipFile.Read(zipStream);
#endif
} catch (Exception e) {
// Catches exceptions when an invalid zip file is found
Debug.LogError("Caught exception when loading from zip\n" + e);
zipStream.Dispose();
return(false);
}
if (ContainsEntry("meta" + jsonExt))
{
meta = DeserializeMeta(GetEntry("meta" + jsonExt));
}
else if (ContainsEntry("meta" + binaryExt))
{
meta = DeserializeBinaryMeta(GetEntry("meta" + binaryExt));
}
else
{
throw new Exception("No metadata found in serialized data.");
}
if (FullyDefinedVersion(meta.version) > FullyDefinedVersion(AstarPath.Version))
{
Debug.LogWarning("Trying to load data from a newer version of the A* Pathfinding Project\nCurrent version: " + AstarPath.Version + " Data version: " + meta.version +
"\nThis is usually fine as the stored data is usually backwards and forwards compatible." +
"\nHowever node data (not settings) can get corrupted between versions (even though I try my best to keep compatibility), so it is recommended " +
"to recalculate any caches (those for faster startup) and resave any files. Even if it seems to load fine, it might cause subtle bugs.\n");
}
else if (FullyDefinedVersion(meta.version) < FullyDefinedVersion(AstarPath.Version))
{
Debug.LogWarning("Upgrading serialized pathfinding data from version " + meta.version + " to " + AstarPath.Version +
"\nThis is usually fine, it just means you have upgraded to a new version." +
"\nHowever node data (not settings) can get corrupted between versions (even though I try my best to keep compatibility), so it is recommended " +
"to recalculate any caches (those for faster startup) and resave any files. Even if it seems to load fine, it might cause subtle bugs.\n");
}
return(true);
}
