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

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package gplx.ios; import gplx.*;
import org.junit.*;
public class Io_line_rdr_tst {
	Io_line_rdr_fxt fxt;
	@Before public void init() {
		fxt = new Io_line_rdr_fxt(Io_url_.new_fil_("mem/test.txt"));
		fxt.Clear();
	}
	@Test  public void Basic() {
		fxt.File_lines_(3).tst_Read_til_lines(3, "00", "01", "02");
		fxt.tst_Read_til_lines(1);	// make sure nothing more is read
	}
	@Test  public void Load_3x() {
		fxt.File_lines_(9).Load_len_lines_(3).tst_Read_til_lines(9, "00", "01", "02", "03", "04", "05", "06", "07", "08");
	}
	@Test  public void Load_irregular() {
		fxt.File_lines_(9).Load_len_(4).tst_Read_til_lines(9, "00", "01", "02", "03", "04", "05", "06", "07", "08");
	}
	@Test  public void Load_multiple_files() {
		fxt = new Io_line_rdr_fxt(Io_url_.new_fil_("mem/test0.txt"), Io_url_.new_fil_("mem/test1.txt"), Io_url_.new_fil_("mem/test2.txt"));
		fxt.File_lines_(0, 0, 3).File_lines_(1, 3, 5).File_lines_(2, 5, 9).Load_len_(4).tst_Read_til_lines(9, "00", "01", "02", "03", "04", "05", "06", "07", "08");
	}
	@Test  public void Match() {
		fxt.File_lines_pipe_(9).Load_len_(6);
		fxt.tst_Match("00", "00");
		fxt.tst_Match("01", "01");
		fxt.tst_Match("03", "03");
		fxt.tst_Match("08", "08");
		fxt.tst_Match("12", "");
	}
}
class Io_line_rdr_fxt {
	Io_line_rdr rdr;
	ListAdp lines = ListAdp_.new_(); Bry_bfr tmp = Bry_bfr.new_();
	public Io_line_rdr_fxt(Io_url... urls) {rdr = new Io_line_rdr(Gfo_usr_dlg_base.test_(), urls);}
	public Io_line_rdr_fxt Load_len_lines_(int v) {return Load_len_(v * 3);}	// 3: 2=##, 1=\n
	public Io_line_rdr_fxt Load_len_(int v) {rdr.Load_len_(v); return this;}
	public Io_line_rdr_fxt File_lines_(int count) {
		for (int i = 0; i < count; i++)
			tmp.Add_int_fixed(i, 2).Add_byte_nl();
		Io_mgr._.SaveFilBry(rdr.Urls()[0], tmp.Xto_bry_and_clear());
		return this;
	}
//	public Io_url[] Src_fils() {return src_fils;} public Io_line_rdr_fxt Src_fils_(Io_url[] v) {src_fils = v; return this;} Io_url[] src_fils;
	public Io_line_rdr_fxt tst_Match(String match, String expd) {
		rdr.Key_gen_(Io_line_rdr_key_gen_.first_pipe);
		boolean match_v = rdr.Match(Bry_.new_utf8_(match));
		String actl = match_v ? String_.new_utf8_(rdr.Bfr(), rdr.Key_pos_bgn(), rdr.Key_pos_end()) : "";
		Tfds.Eq(expd, actl);
		return this;
	}  
	public Io_line_rdr_fxt File_lines_pipe_(int count) {
		for (int i = 0; i < count; i++)
			tmp.Add_int_fixed(i, 2).Add_byte(Byte_ascii.Pipe).Add_byte_nl();
		Io_mgr._.SaveFilBry(rdr.Urls()[0], tmp.Xto_bry_and_clear());
		return this;
	}

	public Io_line_rdr_fxt File_lines_(int fil_idx, int bgn, int end) {
		for (int i = bgn; i < end; i++)
			tmp.Add_int_fixed(i, 2).Add_byte_nl();
		Io_mgr._.SaveFilBry(rdr.Urls()[fil_idx], tmp.Xto_bry_and_clear());
		return this;
	}
	public Io_line_rdr_fxt Clear() {rdr.Clear(); return this;}
	public Io_line_rdr_fxt tst_Read_til_lines(int count, String... expd) {		
		lines.Clear();
		for (int i = 0; i < expd.length; i++)
			expd[i] = expd[i] + Op_sys.Lnx.Nl_str();
		for (int i = 0; i < count; i++) {
			if (rdr.Read_next())
				lines.Add(String_.new_utf8_(rdr.Bfr(), rdr.Itm_pos_bgn(), rdr.Itm_pos_end()));
			else
				break;
		}
		Tfds.Eq_ary_str(expd, lines.XtoStrAry());
		return this;
	}		
}
