<?php
/**
 * This demo prints out supported code pages on your printer. This is intended
 * for debugging character-encoding issues: If your printer does not work with
 * a built-in capability profile, you need to check its documentation for
 * supported code pages.
 * 
 * These are then loaded into a capability profile, which maps code page
 * numbers to iconv encoding names on your particular printer. This script
 * will print all configured code pages, so that you can check that the chosen
 * iconv encoding name matches the actual code page contents.
 * 
 * If this is correctly set up for your printer, then the driver will try its
 * best to map UTF-8 text into these code pages for you, allowing you to accept
 * arbitrary input from a database, without worrying about encoding it for the printer.
 */
require_once(dirname(__FILE__) . "/../Escpos.php");

// Enter connector and capability profile (to match your printer)
$connector = new FilePrintConnector("php://stdout");
$profile = DefaultCapabilityProfile::getInstance();
$verbose = false; // Skip tables which iconv wont convert to (ie, only print characters available with UTF-8 input)

/* Print a series of receipts containing i18n example strings - Code below shouldn't need changing */
$printer = new Escpos($connector, $profile);
$codePages = $profile -> getSupportedCodePages();
$first = true; // Print larger table for first code-page.
foreach($codePages as $table => $name) {
	/* Change printer code page */
	$printer -> selectCharacterTable(255);
	$printer -> selectCharacterTable($table);
	/* Select & print a label for it */
	$label = $name;
	if($name === false) {
		$label= " (not matched to iconv table)";
	}
	$printer -> setEmphasis(true);
	$printer -> textRaw("Table $table: $label\n");
	$printer -> setEmphasis(false);
	if($name === false && !$verbose) {
		continue; // Skip non-recognised
	}
	/* Print a table of available characters (first table is larger than subsequent ones */
	if($first) {
		$first = false;
		compactCharTable($printer, 1, true);
	} else {
		compactCharTable($printer);
	}
}
$printer -> cut();
$printer -> close();

function compactCharTable($printer, $start = 4, $header = false) {
	/* Output a compact character table for the current encoding */
	$chars = str_repeat(' ', 256);
	for($i = 0; $i < 255; $i++) {
		$chars[$i] = ($i > 32 && $i != 127) ? chr($i) : ' ';
	}
	if($header) {
		$printer -> setEmphasis(true);
		$printer -> textRaw("  0123456789ABCDEF0123456789ABCDEF\n");
		$printer -> setEmphasis(false);
	}
 	for($y = $start; $y < 8; $y++) {
 		$printer -> setEmphasis(true);
 		$printer -> textRaw(strtoupper(dechex($y * 2)) . " ");
 		$printer -> setEmphasis(false);
 		$printer -> textRaw(substr($chars, $y * 32, 32) . "\n");
 	}
}
