public string Label(string[] lines)
{
int i = 0;
WapitiNative.gets_cb gets_cb = () => i >= lines.Length ? null : lines[i++];
var sb = new StringBuilder();
WapitiNative.write_cb write_cb = (ptr, length) =>
{
byte[] strbuf = new byte[length];
Marshal.Copy(ptr, strbuf, 0, length);
var data = Encoding.UTF8.GetString(strbuf);
WapitiNative.xfree(ptr);
sb.Append(data);
};
var iol = WapitiNative.iol_new_interop(gets_cb, write_cb);
WapitiNative.tag_label(this.Model, iol);
WapitiNative.iol_free_interop(iol);
return(sb.ToString());
}
public static WapitiModel Load(string[] lines)
{
int i = 0;
WapitiNative.gets_cb gets_cb = () => i >= lines.Length ? null : lines[i++];
var iol = WapitiNative.iol_new_interop(gets_cb, null);
var rdr = WapitiNative.rdr_new(iol, true);
var mdl = WapitiNative.mdl_new(rdr);
WapitiNative.mdl_load(mdl);
return(new WapitiModel(mdl));
}
public string Train(Opt trainOpt, string[] modelLines, string[] patternLines)
{
int model_idx = 0;
WapitiNative.gets_cb model_gets_cb = () => model_idx >= modelLines.Length ? null : modelLines[model_idx++];
int pattern_idx = 0;
WapitiNative.gets_cb pattern_gets_cb = () => pattern_idx >= patternLines.Length ? null : patternLines[pattern_idx++];
var sb = new StringBuilder();
WapitiNative.write_cb write_cb = (ptr, length) =>
{
byte[] strbuf = new byte[length];
Marshal.Copy(ptr, strbuf, 0, length);
var data = Encoding.UTF8.GetString(strbuf);
WapitiNative.xfree(ptr);
sb.Append(data);
};
var iol_model = WapitiNative.iol_new_interop(model_gets_cb, write_cb);
var iol_pattern = WapitiNative.iol_new_interop(pattern_gets_cb, null);
var optPtr = Marshal.AllocHGlobal(Marshal.SizeOf <Opt>());
Marshal.StructureToPtr(trainOpt, optPtr, false);
int result = WapitiNative.train(optPtr, iol_model, iol_pattern);
if (result != 0)
{
throw new Exception($"training failed :: {result}");
}
Marshal.FreeHGlobal(optPtr);
WapitiNative.iol_free_interop(iol_model);
WapitiNative.iol_free_interop(iol_pattern);
return(sb.ToString());
}