/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012-2017 gnosygnu@gmail.com

XOWA is licensed under the terms of the General Public License (GPL) Version 3,
or alternatively under the terms of the Apache License Version 2.0.

You may use XOWA according to either of these licenses as is most appropriate
for your project on a case-by-case basis.

The terms of each license can be found in the source code repository:

GPLv3 License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-GPLv3.txt
Apache License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-APACHE2.txt
*/
package gplx.gfml; import gplx.*;
import gplx.core.lists.*; /*StackAdp*/ import gplx.core.gfo_ndes.*; import gplx.core.stores.*;
public class GfmlDataWtr extends DataWtr_base implements DataWtr {
	public void InitWtr(String key, Object val) {
		if (!String_.Eq(key, GfmlDataWtrOpts.Key_const)) return;
		GfmlDataWtrOpts layout = GfmlDataWtrOpts.cast(val);
		keyedSpr = layout.KeyedSpr();
		indentNodes = layout.IndentNodes();
		ignoreNullNames = layout.IgnoreNullNames();
	}
	@Override public void WriteData(String name, Object val) {
		if (nde.SubKeys().Count() != 0) AddTkn_nullVal(keyedSpr);	// add keyedSprTkn if not first
		GfmlTkn keyTkn = AddTkn_raw(name);
		AddTkn_raw("=");
		GfmlTkn valTkn = AddTkn_raw(To_str(val));
		GfmlAtr atr = GfmlAtr.new_(keyTkn, valTkn, GfmlType_.String);
		nde.SubObjs_Add(atr);
	}
	public void WriteLeafBgn(String leafName) {this.WriteNodeBgn(leafName);}
	@Override public void WriteNodeBgn(String nodeName) {
		stack.Push(nde);
		if (stack.Count() != 1					// not root
			&& nde.SubHnds().Count() == 0) {	// first subNde
			AddTkn_nullVal("{");
			if (indentNodes) AddTkn_nullVal(String_.CrLf);
		}
		if (indentNodes) AddTkn_nullVal(String_.Repeat("\t", stack.Count() - 1));
		GfmlTkn nameTkn = null;
		if (ignoreNullNames && String_.Eq(nodeName, ""))
			nameTkn = GfmlTkn_.Null;
		else {
			nameTkn = AddTkn_raw(String_.Eq(nodeName, "") ? "%" : nodeName);
			AddTkn_nullVal(":");
		}
		nde = GfmlNde.named_(nameTkn, GfmlType_.new_any_());
	}
	public void WriteLeafEnd() {this.WriteNodeEnd();}
	@Override public void WriteNodeEnd() {
		if (nde.SubHnds().Count() == 0)
			AddTkn_nullVal(";");
		else {
			if (indentNodes) AddTkn_nullVal(String_.Repeat("\t", stack.Count() - 1));
			AddTkn_nullVal("}");
		}
		if (indentNodes) AddTkn_nullVal(String_.CrLf);
		GfmlNde finishedNde = nde;
		nde = GfmlNde.as_(stack.Pop());
		nde.SubObjs_Add(finishedNde);
	}
	public void WriteComment(String comment) {
		AddTkn_nullVal("/*");
		AddTkn_raw(comment);
		AddTkn_nullVal("*/");
	}
	public void Clear() {nde.SubObjs_Clear();}
	public void WriteTableBgn(String name, GfoFldList fields) {}
	public void CloseBranchHdr(boolean isInline) {}
	public String To_str() {
		while (stack.Count() > 0) {	// auto-close all nodes
			WriteNodeEnd();
		}
		return GfmlDocWtr_.xtoStr_(gdoc.RootNde());
	}
	String To_str(Object obj) {
		if (obj == null) return "''";
		String s = Object_.Xto_str_strict_or_empty(obj);
		return String_.Concat("'", String_.Replace(s, "'", "''"), "'");
	}
	GfmlTkn AddTkn_raw(String raw) {return AddTkn(raw, raw);}
	GfmlTkn AddTkn_nullVal(String raw) {return AddTkn(raw, GfmlTkn_.NullVal);}
	GfmlTkn AddTkn(String raw, String val) {
		GfmlTkn tkn = GfmlTkn_.new_(raw, val);
		nde.SubObjs_Add(tkn);
		return tkn;
	}
	@Override public SrlMgr SrlMgr_new(Object o) {return new GfmlDataWtr();}
	StackAdp stack = StackAdp_.new_();
	GfmlDoc gdoc = GfmlDoc.new_(); GfmlNde nde;
	String keyedSpr = GfmlDataWtrOpts.Instance.KeyedSpr(); boolean indentNodes, ignoreNullNames;
        public static GfmlDataWtr new_() {return new GfmlDataWtr();}
	GfmlDataWtr() {this.nde = this.gdoc.RootNde();}
}