EF (Export File)

Library Java for make easy export flat-file with one or more data layout.

How to use EF:

Step 01 - Initiate the file you want save

import br.com.utils.ef.ExportFile;
import br.com.utils.ef.LayoutFile;

...

ExportFile ef 		= 	new ExportFile();

Step 02 - Define the layout or layouts you want export inside of your file

ef.newLayout("HEADER");
ef.newLayout("BODY");
ef.newLayout("TRAILER");

LayoutFile layout = ef.getLayout("HEADER");

layout.define("idSection", LayoutFile.NUMERIC, LayoutFile.ALINHAMENTO_DIREITO, LayoutFile.ZERO, 2);
layout.define("fileName", LayoutFile.STRING, LayoutFile.ALINHAMENTO_ESQUERDO, LayoutFile.ESPACO, 10);
layout.define("filler", LayoutFile.STRING, LayoutFile.ALINHAMENTO_ESQUERDO, LayoutFile.ESPACO, 18);
    
layout = ef.getLayout("BODY");

layout.define("idSection", LayoutFile.NUMERIC, LayoutFile.ALINHAMENTO_DIREITO, LayoutFile.ZERO, 2, "1");
layout.define("name", LayoutFile.STRING, LayoutFile.ALINHAMENTO_ESQUERDO, LayoutFile.ESPACO, 3);
layout.define("id", LayoutFile.NUMERIC, LayoutFile.ALINHAMENTO_DIREITO, LayoutFile.ESPACO, 5);
layout.define("filler", LayoutFile.STRING, LayoutFile.ALINHAMENTO_ESQUERDO, LayoutFile.ESPACO, 20);

layout = ef.getLayout("TRAILER");

layout.define("idSection", LayoutFile.NUMERIC, LayoutFile.ALINHAMENTO_DIREITO, LayoutFile.ZERO, 2, "99");
layout.define("filler", LayoutFile.STRING, LayoutFile.ALINHAMENTO_DIREITO, LayoutFile.ESPACO, 28);

Step 03 - Define the order of layouts will be exported in the final file

ef.format("HEADER", "BODY", "TRAILER");

Step 04 - Populate each layout with respectives datas

layout = ef.getLayout("HEADER");
layout.newLine();
layout.set("fileName", "exemple01.txt");

layout = ef.getLayout("BODY");

for (int i = 0; i < 10; i++){
	layout.newLine();
	layout.set("id", i);
} 

layout = ef.getLayout("TRAILER");
layout.newLine();
layout.set("filler","EOF.");

Step 05 - Export final file

	try{
		ef.saveFile("test.txt");
	}
	catch(Exception e){
		System.out.println(e);
	}

Result - test.txt

"00test.txt                    "
"01       0                    "
"01       1                    "
"01       2                    "
"01       3                    "
"01       4                    "
"01       5                    "
"01       6                    "
"01       7                    "
"01       8                    "
"01       9                    "
"99                        EOF."