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- <?php
-
- /*
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- */
-
- /**
- * A single variable-width line on a receipt, with different formatting options
- */
- class ReceiptLine {
-
- const LINEFORMAT_PLAIN = 1;
- const LINEFORMAT_BOLD = 2;
- const LINEFORMAT_HR = 4;
- const LINEFORMAT_CENTER = 8;
- const LINEFORMAT_BLANK = 16;
-
- private $left = "";
- private $middle = "";
- private $right = "";
- private $format;
-
- function __construct($l = "", $m = "", $r = "", $f = ReceiptLine::LINEFORMAT_PLAIN) {
- $this->left = $l;
- $this->middle = $m;
- $this->right = $r;
- $this->format = $f;
- }
-
- function getLeft() {
- return $this->left;
- }
-
- function getMiddle() {
- return $this->middle;
- }
-
- function getRight() {
- return $this->right;
- }
-
- function hasFormat($format) {
- return ($this->format & $format);
- }
-
- function getHtml() {
- if ($this->hasFormat($this::LINEFORMAT_HR)) {
- return "<hr />";
- }
- if ($this->hasFormat($this::LINEFORMAT_BLANK)) {
- return "<br />";
- }
- $html = "";
- if (!empty($this->left) || $this->left === 0 || $this->left === "0") {
- $html .= '<span>' . htmlspecialchars($this->left) . ' </span>';
- }
- if (!empty($this->middle) || $this->middle === 0 || $this->middle === "0") {
- $html .= '<span>' . htmlspecialchars($this->middle) . ' </span>';
- }
- if (!empty($this->right) || $this->right === 0 || $this->right === "0") {
- $html .= '<span>' . htmlspecialchars($this->right) . '</span>';
- }
- $classes = ["flex"];
- if ($this->hasFormat($this::LINEFORMAT_BOLD)) {
- $classes[] = "bold";
- }
- if ($this->hasFormat($this::LINEFORMAT_CENTER)) {
- $classes[] = "centered";
- }
- $classstr = implode(" ", $classes);
- return "<div class=\"$classstr\">$html</div>";
- }
-
- function getPlainText($width) {
- if ($this->hasFormat($this::LINEFORMAT_HR)) {
- return str_repeat("-", $width);
- }
- if ($this->hasFormat($this::LINEFORMAT_BLANK)) {
- return str_repeat(" ", $width);
- }
- $left = $this->left;
- $middle = $this->middle;
- $right = $this->right;
- $leftln = strlen($left);
- $middleln = strlen($middle);
- $rightln = strlen($right);
- if ($middleln > 0) {
- $middleln++;
- $middle = " " . $middle;
- }
- if ($rightln > 0) {
- $rightln++;
- $right = " " . $right;
- }
- $strln = $leftln + $middleln + $rightln;
- if ($strln < $width) {
- if ($this->hasFormat($this::LINEFORMAT_CENTER)) {
- return str_pad($left . $middle . $right, $width, " ", STR_PAD_BOTH);
- } else {
- $middle = str_pad($middle, $width - $leftln - $rightln, " ", STR_PAD_BOTH);
- }
- } else if ($strln > $width) {
- $loseln = $strln - $width;
- $left = substr($this->left, 0, $leftln - $loseln);
- }
- return $left . $middle . $right;
- }
-
- function getArray($width = 64) {
- $data = [
- "left" => $this->left,
- "middle" => $this->middle,
- "right" => $this->right,
- "text" => $this->getPlainText($width),
- "format" => []
- ];
- if ($this->hasFormat($this::LINEFORMAT_PLAIN)) {
- $data['format'][] = "plain";
- }
- if ($this->hasFormat($this::LINEFORMAT_BOLD)) {
- $data['format'][] = "bold";
- }
- if ($this->hasFormat($this::LINEFORMAT_HR)) {
- $data['format'][] = "hr";
- }
- if ($this->hasFormat($this::LINEFORMAT_CENTER)) {
- $data['format'][] = "center";
- }
- if ($this->hasFormat($this::LINEFORMAT_BLANK)) {
- $data['format'][] = "blank";
- }
- return $data;
- }
-
- }
-
- class Receipt {
-
- private $lines = [];
- private $header = [];
- private $footer = [];
-
- function __construct() {
-
- }
-
- function appendLine(ReceiptLine $line) {
- $this->lines[] = $line;
- }
-
- function appendLines($lines) {
- foreach ($lines as $l) {
- $this->lines[] = $l;
- }
- }
-
- function appendHeader(ReceiptLine $line) {
- $this->header[] = $line;
- }
-
- function appendFooter(ReceiptLine $line) {
- $this->footer[] = $line;
- }
-
- function appendBreak() {
- $this->lines[] = new ReceiptLine("", "", "", ReceiptLine::LINEFORMAT_HR);
- }
-
- function appendBlank() {
- $this->lines[] = new ReceiptLine("", "", "", ReceiptLine::LINEFORMAT_BLANK);
- }
-
- function getHtml($title = "") {
- global $SECURE_NONCE;
- $html = <<<END
- <!DOCTYPE html>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1">
- <title>$title</title>
- <style nonce="$SECURE_NONCE">
- .flex {
- display: flex;
- justify-content: space-between;
- margin: 0;
- }
- .bold {
- font-weight: bold;
- }
- .centered {
- justify-content: center;
- }
- </style>
- END;
- if (count($this->header) > 0) {
- foreach ($this->header as $line) {
- $html .= $line->getHtml() . "\n";
- }
- $html .= (new ReceiptLine("", "", "", ReceiptLine::LINEFORMAT_HR))->getHtml();
- }
- foreach ($this->lines as $line) {
- $html .= $line->getHtml() . "\n";
- }
- if (count($this->footer) > 0) {
- $html .= (new ReceiptLine("", "", "", ReceiptLine::LINEFORMAT_HR))->getHtml();
- foreach ($this->footer as $line) {
- $html .= $line->getHtml() . "\n";
- }
- }
- return $html;
- }
-
- function getPlainText($width) {
- $lines = [];
- if (count($this->header) > 0) {
- foreach ($this->header as $line) {
- $lines[] = $line->getPlainText($width);
- }
- $lines[] = (new ReceiptLine("", "", "", ReceiptLine::LINEFORMAT_HR))->getPlainText($width);
- }
- foreach ($this->lines as $line) {
- $lines[] = $line->getPlainText($width);
- }
- if (count($this->footer) > 0) {
- $lines[] = (new ReceiptLine("", "", "", ReceiptLine::LINEFORMAT_HR))->getPlainText($width);
- foreach ($this->footer as $line) {
- $lines[] = $line->getPlainText($width);
- }
- }
- return implode("\n", $lines);
- }
-
- function getArray($width = 64) {
- $header = [];
- $lines = [];
- $footer = [];
- foreach ($this->header as $line) {
- $header[] = $line->getArray($width);
- }
- foreach ($this->lines as $line) {
- $lines[] = $line->getArray($width);
- }
- foreach ($this->footer as $line) {
- $footer[] = $line->getArray($width);
- }
- return ["header" => $header, "lines" => $lines, "footer" => $footer];
- }
-
- function getJson($width = 64) {
- return json_encode($this->getArray($width));
- }
-
- }
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