| 1 |
<?php |
| 2 |
/** |
| 3 |
* Epson ePOS-Print XML Thermal Emitter Class. |
| 4 |
* |
| 5 |
* Maps a thermal AST (produced by Thermal_Markup_Parser) to Epson ePOS-Print |
| 6 |
* XML for use with Server Direct Print. The emitted document uses the same |
| 7 |
* namespace and escaping conventions as Epos_Xml_Output_Adapter. |
| 8 |
* |
| 9 |
* This is the template-driven counterpart to |
| 10 |
* `WCPOS\WooCommercePOS\Templates\Adapters\Epos_Xml_Output_Adapter`, which emits a |
| 11 |
* fixed, non-template layout from canonical receipt data. |
| 12 |
* |
| 13 |
* Deliberate deviations / limitations: |
| 14 |
* - ePOS `<text>` attributes are persistent printer state, so the emitter |
| 15 |
* tracks that state and emits only changes after a reset preamble. |
| 16 |
* - Double rules (`<line style="double"/>`) are emitted as ASCII `=` repeated |
| 17 |
* across the paper width (consistent with the ESC/POS emitter) rather than a |
| 18 |
* box-drawing glyph, so output is codepage-independent. |
| 19 |
* - Paper cuts (`<cut>`), both full and partial, map to `<cut type="feed"/>`. |
| 20 |
* - Images (`<image>`) are thresholded to 1-bit dots by Thermal_Bitmap and sent |
| 21 |
* as base64 in an `<image>` element. |
| 22 |
* - Text is emitted as plain UTF-8 (Epson handles UTF-8), but still passes |
| 23 |
* through Thermal_Text_Layout::normalize_text(): the typographic spaces and |
| 24 |
* dashes it folds are not in any printer character table, and a printer that |
| 25 |
* cannot map a codepoint substitutes `?` on the paper. |
| 26 |
* |
| 27 |
* @author Paul Kilmurray <[email protected]> |
| 28 |
* |
| 29 |
* @see http://wcpos.com |
| 30 |
* @package WCPOS\WooCommercePOS |
| 31 |
*/ |
| 32 |
|
| 33 |
namespace WCPOS\WooCommercePOS\Templates\Thermal; |
| 34 |
|
| 35 |
use WCPOS\WooCommercePOS\Templates\Barcode_Symbology; |
| 36 |
|
| 37 |
/** |
| 38 |
* Epos_Xml_Thermal_Emitter class. |
| 39 |
*/ |
| 40 |
class Epos_Xml_Thermal_Emitter { |
| 41 |
|
| 42 |
use Thermal_Emitter_Support; |
| 43 |
|
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/** |
| 45 |
* Render options. |
| 46 |
* |
| 47 |
* @var array |
| 48 |
*/ |
| 49 |
private $options = array(); |
| 50 |
|
| 51 |
/** |
| 52 |
* Accumulated output XML. |
| 53 |
* |
| 54 |
* @var string |
| 55 |
*/ |
| 56 |
private $buffer = ''; |
| 57 |
|
| 58 |
/** |
| 59 |
* The paper width in character columns. |
| 60 |
* |
| 61 |
* @var int |
| 62 |
*/ |
| 63 |
private $columns = 48; |
| 64 |
|
| 65 |
/** |
| 66 |
* The current alignment mode (left|center|right). |
| 67 |
* |
| 68 |
* @var string |
| 69 |
*/ |
| 70 |
private $align = 'left'; |
| 71 |
|
| 72 |
/** |
| 73 |
* Whether bold (emphasis) is currently active. |
| 74 |
* |
| 75 |
* @var bool |
| 76 |
*/ |
| 77 |
private $em = false; |
| 78 |
|
| 79 |
/** |
| 80 |
* Whether underline is currently active. |
| 81 |
* |
| 82 |
* @var bool |
| 83 |
*/ |
| 84 |
private $ul = false; |
| 85 |
|
| 86 |
/** |
| 87 |
* Whether reverse (invert) is currently active. |
| 88 |
* |
| 89 |
* @var bool |
| 90 |
*/ |
| 91 |
private $reverse = false; |
| 92 |
|
| 93 |
/** |
| 94 |
* Whether double-width is currently active. |
| 95 |
* |
| 96 |
* @var bool |
| 97 |
*/ |
| 98 |
private $dw = false; |
| 99 |
|
| 100 |
/** |
| 101 |
* Whether double-height is currently active. |
| 102 |
* |
| 103 |
* @var bool |
| 104 |
*/ |
| 105 |
private $dh = false; |
| 106 |
|
| 107 |
/** |
| 108 |
* The text style state currently held by the printer. |
| 109 |
* |
| 110 |
* A null value means the state is unknown and must be re-emitted. |
| 111 |
* |
| 112 |
* @var array |
| 113 |
*/ |
| 114 |
private $printer = array( |
| 115 |
'align' => null, |
| 116 |
'em' => null, |
| 117 |
'ul' => null, |
| 118 |
'reverse' => null, |
| 119 |
'dw' => null, |
| 120 |
'dh' => null, |
| 121 |
); |
| 122 |
|
| 123 |
/** |
| 124 |
* Constructor. |
| 125 |
* |
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* @param array $options Render options. |
| 127 |
*/ |
| 128 |
public function __construct( array $options = array() ) { |
| 129 |
$this->options = $options; |
| 130 |
} |
| 131 |
|
| 132 |
/** |
| 133 |
* Emit ePOS-Print XML from a thermal AST. |
| 134 |
* |
| 135 |
* @param array $ast The thermal AST root (a receipt node). |
| 136 |
* |
| 137 |
* @return string The ePOS-Print XML document. |
| 138 |
*/ |
| 139 |
public function emit( array $ast ): string { |
| 140 |
$this->buffer = ''; |
| 141 |
$this->align = 'left'; |
| 142 |
$this->em = false; |
| 143 |
$this->ul = false; |
| 144 |
$this->reverse = false; |
| 145 |
$this->dw = false; |
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$this->dh = false; |
| 147 |
|
| 148 |
$this->columns = isset( $ast['paper_width'] ) ? (int) $ast['paper_width'] : 48; |
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|
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$this->buffer .= '<epos-print xmlns="http://www.epson-pos.com/schemas/2011/03/epos-print">'; |
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|
| 152 |
// The printer still holds whatever the previous job left, so treat every |
| 153 |
// attribute as unknown and let the transition write the full reset preamble. |
| 154 |
$this->printer = array_fill_keys( array( 'align', 'em', 'ul', 'reverse', 'dw', 'dh' ), null ); |
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$this->buffer .= '<text' . $this->style_transition() . '/>'; |
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|
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$children = isset( $ast['children'] ) && \is_array( $ast['children'] ) ? $ast['children'] : array(); |
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$this->walk_nodes( $this->nodes_with_auto_drawer( $children ) ); |
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|
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$this->buffer .= '</epos-print>'; |
| 161 |
|
| 162 |
return $this->buffer; |
| 163 |
} |
| 164 |
|
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/** |
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* Emit an Epson ePOS-Print drawer pulse. |
| 167 |
* |
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* @param string $connector Drawer connector. |
| 169 |
*/ |
| 170 |
private function emit_pulse( string $connector ): void { |
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$connector = \WCPOS\WooCommercePOS\Services\Print_Job_Service::normalize_drawer_connector( $connector ); |
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$drawer = 'pin5' === $connector ? 'drawer_2' : 'drawer_1'; |
| 173 |
$this->buffer .= '<pulse drawer="' . $drawer . '" time="pulse_100"/>'; |
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} |
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|
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/** |
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* Walk a single AST node. |
| 178 |
* |
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* @param array $node The AST node. |
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* |
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* @return void |
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*/ |
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private function walk_node( array $node ): void { |
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$type = isset( $node['type'] ) ? $node['type'] : ''; |
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|
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switch ( $type ) { |
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case 'raw-text': |
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$this->emit_text_element( isset( $node['value'] ) ? (string) $node['value'] : '' ); |
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break; |
| 190 |
case 'text': |
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$this->emit_text_node( $node ); |
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break; |
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case 'bold': |
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$this->emit_bold( $node ); |
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break; |
| 196 |
case 'underline': |
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$this->emit_underline( $node ); |
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break; |
| 199 |
case 'invert': |
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$this->emit_invert( $node ); |
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break; |
| 202 |
case 'size': |
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$this->emit_size( $node ); |
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break; |
| 205 |
case 'align': |
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$this->emit_align( $node ); |
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break; |
| 208 |
case 'row': |
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$this->emit_row( $node ); |
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break; |
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case 'line': |
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$this->emit_line( $node ); |
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break; |
| 214 |
case 'barcode': |
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$this->emit_barcode( $node ); |
| 216 |
break; |
| 217 |
case 'qrcode': |
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$this->emit_qrcode( $node ); |
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break; |
| 220 |
case 'image': |
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$this->emit_image( $node ); |
| 222 |
break; |
| 223 |
case 'cut': |
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$this->buffer .= '<cut type="feed"/>'; |
| 225 |
break; |
| 226 |
case 'feed': |
| 227 |
$this->emit_feed( $node ); |
| 228 |
break; |
| 229 |
case 'drawer': |
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$this->emit_pulse( isset( $node['connector'] ) ? (string) $node['connector'] : 'pin2' ); |
| 231 |
break; |
| 232 |
case 'receipt': |
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$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
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break; |
| 235 |
} |
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} |
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|
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/** |
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* Emit a single <text> element from a text node, unioning the current style |
| 240 |
* state with any style wrappers found within the node's own subtree. |
| 241 |
* |
| 242 |
* @param array $node The text AST node. |
| 243 |
* |
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* @return void |
| 245 |
*/ |
| 246 |
private function emit_text_node( array $node ): void { |
| 247 |
$children = isset( $node['children'] ) && \is_array( $node['children'] ) ? $node['children'] : array(); |
| 248 |
|
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$previous_em = $this->em; |
| 250 |
$previous_ul = $this->ul; |
| 251 |
$previous_reverse = $this->reverse; |
| 252 |
$previous_dw = $this->dw; |
| 253 |
$previous_dh = $this->dh; |
| 254 |
|
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$this->collect_subtree_styles( $children ); |
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|
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$content = Thermal_Text_Layout::extract_text( $children ); |
| 258 |
$this->emit_text_element( $content ); |
| 259 |
|
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$this->em = $previous_em; |
| 261 |
$this->ul = $previous_ul; |
| 262 |
$this->reverse = $previous_reverse; |
| 263 |
$this->dw = $previous_dw; |
| 264 |
$this->dh = $previous_dh; |
| 265 |
} |
| 266 |
|
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/** |
| 268 |
* Union the style flags implied by wrappers within a node subtree. |
| 269 |
* |
| 270 |
* @param array $nodes The AST nodes to scan. |
| 271 |
* |
| 272 |
* @return void |
| 273 |
*/ |
| 274 |
private function collect_subtree_styles( array $nodes ): void { |
| 275 |
foreach ( $nodes as $node ) { |
| 276 |
if ( ! \is_array( $node ) ) { |
| 277 |
continue; |
| 278 |
} |
| 279 |
$type = isset( $node['type'] ) ? $node['type'] : ''; |
| 280 |
if ( 'bold' === $type ) { |
| 281 |
$this->em = true; |
| 282 |
} elseif ( 'underline' === $type ) { |
| 283 |
$this->ul = true; |
| 284 |
} elseif ( 'invert' === $type ) { |
| 285 |
$this->reverse = true; |
| 286 |
} elseif ( 'size' === $type ) { |
| 287 |
$width = isset( $node['width'] ) ? (int) $node['width'] : 1; |
| 288 |
$height = isset( $node['height'] ) ? (int) $node['height'] : 1; |
| 289 |
if ( $width > 1 ) { |
| 290 |
$this->dw = true; |
| 291 |
} |
| 292 |
if ( $height > 1 ) { |
| 293 |
$this->dh = true; |
| 294 |
} |
| 295 |
} |
| 296 |
if ( isset( $node['children'] ) && \is_array( $node['children'] ) ) { |
| 297 |
$this->collect_subtree_styles( $node['children'] ); |
| 298 |
} |
| 299 |
} |
| 300 |
} |
| 301 |
|
| 302 |
/** |
| 303 |
* Emit a single <text> line in the current style state. |
| 304 |
* |
| 305 |
* @param string $content The plain text content (will be XML-escaped). |
| 306 |
* @param string|null $align Alignment override for this line (rows are |
| 307 |
* pre-padded and always print left-aligned). |
| 308 |
* |
| 309 |
* @return void |
| 310 |
*/ |
| 311 |
private function emit_text_element( string $content, ?string $align = null ): void { |
| 312 |
// normalize_text() is a 1:1 character substitution, so it cannot change a |
| 313 |
// display width the row/rule callers have already padded against. |
| 314 |
$content = Thermal_Text_Layout::normalize_text( $content ); |
| 315 |
$this->buffer .= '<text' . $this->style_transition( $align ) . '>' . $this->escape( $content ) . "\n" . '</text>'; |
| 316 |
} |
| 317 |
|
| 318 |
/** |
| 319 |
* Emit a template `<image>` (in practice, the store logo). |
| 320 |
* |
| 321 |
* The dots go out as base64 raw raster — 1 bit per dot, MSB first, rows whole |
| 322 |
* bytes — not as an encoded PNG (ePOS-Print XML User's Manual, "Encoding |
| 323 |
* Graphic Data"). Thermal_Bitmap produces exactly that layout, and |
| 324 |
* resolves the src without an outbound request, which matters because this |
| 325 |
* runs inside the printer's job fetch. |
| 326 |
* |
| 327 |
* The image is centred unconditionally, ignoring any enclosing `<align>`. |
| 328 |
* That is the contract the other three renderers already keep — the preview |
| 329 |
* (thermal-renderer.ts), the PDF (Html_Thermal_Emitter::render_image()) and |
| 330 |
* the raster lane (Raster_Thermal_Emitter::draw_image()) all hard-centre an |
| 331 |
* `<image>` — and following the wrapper here instead would left-align the |
| 332 |
* bare `<image>` that the template editor inserts, which every one of those |
| 333 |
* three shows centred. |
| 334 |
* |
| 335 |
* A src that resolves to nothing (a remote URL, a missing file) emits |
| 336 |
* nothing: a receipt without its logo still prints, where a broken `<image>` |
| 337 |
* element risks the printer rejecting the whole job. |
| 338 |
* |
| 339 |
* @param array $node The image AST node. |
| 340 |
* |
| 341 |
* @return void |
| 342 |
*/ |
| 343 |
private function emit_image( array $node ): void { |
| 344 |
$bitmap = Thermal_Bitmap::from_node( $node, Thermal_Bounds::paper_dots( $this->columns ) ); |
| 345 |
if ( null === $bitmap ) { |
| 346 |
return; |
| 347 |
} |
| 348 |
|
| 349 |
// align is a documented <image> attribute, not borrowed from <text>: |
| 350 |
// ePOS-Print XML User's Manual, chapter 4, lists left/center/right on this |
| 351 |
// element and defaults it to "left". |
| 352 |
$this->buffer .= '<image width="' . $bitmap->width() . '" height="' . $bitmap->height() . '"' |
| 353 |
. ' align="center" color="color_1" mode="mono">' |
| 354 |
. base64_encode( $bitmap->raster() ) |
| 355 |
. '</image>'; |
| 356 |
|
| 357 |
// The manual's note on <text align> — "the align setting specified in this |
| 358 |
// element is also applied to <image>, <logo>, <barcode> and <symbol>" — |
| 359 |
// runs both ways: this <image> has moved the printer's persistent |
| 360 |
// alignment, so the tracked state can no longer be trusted. |
| 361 |
$this->printer['align'] = null; |
| 362 |
} |
| 363 |
|
| 364 |
/** |
| 365 |
* Build the <text> attributes that move the printer to the current style, |
| 366 |
* and record the printer as now holding that style. |
| 367 |
* |
| 368 |
* The attributes persist on the printer until changed, so only the values |
| 369 |
* that differ from what it holds are written; a null entry in $printer |
| 370 |
* (unknown) is always written. |
| 371 |
* |
| 372 |
* @param string|null $align Alignment override; null uses the wrapper state. |
| 373 |
* |
| 374 |
* @return string The attribute string (with a leading space when non-empty). |
| 375 |
*/ |
| 376 |
private function style_transition( ?string $align = null ): string { |
| 377 |
$desired = array( |
| 378 |
'align' => null === $align ? $this->align : $align, |
| 379 |
'em' => $this->em, |
| 380 |
'ul' => $this->ul, |
| 381 |
'reverse' => $this->reverse, |
| 382 |
'dw' => $this->dw, |
| 383 |
'dh' => $this->dh, |
| 384 |
); |
| 385 |
$attrs = ''; |
| 386 |
foreach ( $desired as $name => $value ) { |
| 387 |
if ( $this->printer[ $name ] !== $value ) { |
| 388 |
$attrs .= ' ' . $name . '="' . ( \is_bool( $value ) ? ( $value ? 'true' : 'false' ) : $value ) . '"'; |
| 389 |
} |
| 390 |
} |
| 391 |
$this->printer = $desired; |
| 392 |
|
| 393 |
return $attrs; |
| 394 |
} |
| 395 |
|
| 396 |
/** |
| 397 |
* Emit a bold-wrapped block. |
| 398 |
* |
| 399 |
* @param array $node The bold AST node. |
| 400 |
* |
| 401 |
* @return void |
| 402 |
*/ |
| 403 |
private function emit_bold( array $node ): void { |
| 404 |
$previous = $this->em; |
| 405 |
$this->em = true; |
| 406 |
$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
| 407 |
$this->em = $previous; |
| 408 |
} |
| 409 |
|
| 410 |
/** |
| 411 |
* Emit an underline-wrapped block. |
| 412 |
* |
| 413 |
* @param array $node The underline AST node. |
| 414 |
* |
| 415 |
* @return void |
| 416 |
*/ |
| 417 |
private function emit_underline( array $node ): void { |
| 418 |
$previous = $this->ul; |
| 419 |
$this->ul = true; |
| 420 |
$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
| 421 |
$this->ul = $previous; |
| 422 |
} |
| 423 |
|
| 424 |
/** |
| 425 |
* Emit an invert-wrapped block. |
| 426 |
* |
| 427 |
* @param array $node The invert AST node. |
| 428 |
* |
| 429 |
* @return void |
| 430 |
*/ |
| 431 |
private function emit_invert( array $node ): void { |
| 432 |
$previous = $this->reverse; |
| 433 |
$this->reverse = true; |
| 434 |
$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
| 435 |
$this->reverse = $previous; |
| 436 |
} |
| 437 |
|
| 438 |
/** |
| 439 |
* Emit a size-wrapped block. |
| 440 |
* |
| 441 |
* @param array $node The size AST node. |
| 442 |
* |
| 443 |
* @return void |
| 444 |
*/ |
| 445 |
private function emit_size( array $node ): void { |
| 446 |
$previous_dw = $this->dw; |
| 447 |
$previous_dh = $this->dh; |
| 448 |
$width = isset( $node['width'] ) ? (int) $node['width'] : 1; |
| 449 |
$height = isset( $node['height'] ) ? (int) $node['height'] : 1; |
| 450 |
|
| 451 |
if ( $width > 1 ) { |
| 452 |
$this->dw = true; |
| 453 |
} |
| 454 |
if ( $height > 1 ) { |
| 455 |
$this->dh = true; |
| 456 |
} |
| 457 |
|
| 458 |
$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
| 459 |
|
| 460 |
$this->dw = $previous_dw; |
| 461 |
$this->dh = $previous_dh; |
| 462 |
} |
| 463 |
|
| 464 |
/** |
| 465 |
* Emit an alignment-wrapped block. |
| 466 |
* |
| 467 |
* @param array $node The align AST node. |
| 468 |
* |
| 469 |
* @return void |
| 470 |
*/ |
| 471 |
private function emit_align( array $node ): void { |
| 472 |
$previous = $this->align; |
| 473 |
$this->align = isset( $node['mode'] ) ? (string) $node['mode'] : 'left'; |
| 474 |
$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
| 475 |
$this->align = $previous; |
| 476 |
} |
| 477 |
|
| 478 |
/** |
| 479 |
* Emit a row as one left-aligned <text> line. |
| 480 |
* |
| 481 |
* @param array $node The row AST node. |
| 482 |
* |
| 483 |
* @return void |
| 484 |
*/ |
| 485 |
private function emit_row( array $node ): void { |
| 486 |
$cols = isset( $node['children'] ) && \is_array( $node['children'] ) ? $node['children'] : array(); |
| 487 |
$widths = Thermal_Text_Layout::resolve_row_widths( $cols, $this->columns ); |
| 488 |
|
| 489 |
$line = ''; |
| 490 |
foreach ( $cols as $index => $col ) { |
| 491 |
$width = isset( $widths[ $index ] ) ? $widths[ $index ] : 1; |
| 492 |
$text = Thermal_Text_Layout::extract_text( isset( $col['children'] ) ? $col['children'] : array() ); |
| 493 |
$text = Thermal_Text_Layout::truncate_display( $text, $width ); |
| 494 |
$pad = max( 0, $width - Thermal_Text_Layout::display_width( $text ) ); |
| 495 |
$align = isset( $col['align'] ) ? $col['align'] : 'left'; |
| 496 |
if ( 'right' === $align ) { |
| 497 |
$line .= str_repeat( ' ', $pad ) . $text; |
| 498 |
} else { |
| 499 |
$line .= $text . str_repeat( ' ', $pad ); |
| 500 |
} |
| 501 |
} |
| 502 |
|
| 503 |
$this->emit_text_element( $line, 'left' ); |
| 504 |
} |
| 505 |
|
| 506 |
/** |
| 507 |
* Emit a horizontal rule as a <text> line. |
| 508 |
* |
| 509 |
* @param array $node The line AST node. |
| 510 |
* |
| 511 |
* @return void |
| 512 |
*/ |
| 513 |
private function emit_line( array $node ): void { |
| 514 |
$style = isset( $node['style'] ) ? $node['style'] : 'single'; |
| 515 |
|
| 516 |
if ( 'dotted' === $style ) { |
| 517 |
$pattern = '. '; |
| 518 |
$repeat = (int) ceil( $this->columns / \strlen( $pattern ) ); |
| 519 |
$text = substr( str_repeat( $pattern, $repeat ), 0, $this->columns ); |
| 520 |
} elseif ( 'double' === $style ) { |
| 521 |
$text = str_repeat( '=', $this->columns ); |
| 522 |
} else { |
| 523 |
// single and dashed both render as '-' across the width. |
| 524 |
$text = str_repeat( '-', $this->columns ); |
| 525 |
} |
| 526 |
|
| 527 |
$this->emit_text_element( $text ); |
| 528 |
} |
| 529 |
|
| 530 |
/** |
| 531 |
* Emit a native barcode element. |
| 532 |
* |
| 533 |
* The `type` attribute is an ePOS-Print enum, not the template's spelling — |
| 534 |
* the UPC pair is underscored there (`upc_a` / `upc_e`) and the unseparated |
| 535 |
* form is rejected — so the name comes from Barcode_Symbology. |
| 536 |
* |
| 537 |
* @param array $node The barcode AST node. |
| 538 |
* |
| 539 |
* @return void |
| 540 |
*/ |
| 541 |
private function emit_barcode( array $node ): void { |
| 542 |
$value = isset( $node['value'] ) ? (string) $node['value'] : ''; |
| 543 |
if ( '' === trim( $value ) ) { |
| 544 |
return; |
| 545 |
} |
| 546 |
|
| 547 |
$type = isset( $node['barcode_type'] ) ? (string) $node['barcode_type'] : 'code128'; |
| 548 |
$height = isset( $node['height'] ) ? (int) $node['height'] : 40; |
| 549 |
$height = max( 1, min( 255, $height ) ); |
| 550 |
|
| 551 |
// Same rescue as the ESC/POS lane: a value the symbology cannot encode |
| 552 |
// would be dropped by the printer "with no error returned" (ePOS-Print |
| 553 |
// manual), so print it as a centered line instead of nothing. |
| 554 |
if ( ! Barcode_Symbology::is_valid_value( $type, $value, Barcode_Symbology::LANE_ESCPOS ) ) { |
| 555 |
$this->emit_text_element( (string) preg_replace( '/[\x00-\x1f\x7f]/', ' ', $value ), 'center' ); |
| 556 |
|
| 557 |
return; |
| 558 |
} |
| 559 |
|
| 560 |
$payload = Barcode_Symbology::epos_xml_payload( $type, $value ); |
| 561 |
|
| 562 |
// hri="below" prints the value under the bars, as the preview, the PDF and |
| 563 |
// the raster lane all do. Without it the merchant designs against a |
| 564 |
// receipt that carries the order number and the printer hands the customer |
| 565 |
// one that does not. |
| 566 |
$this->buffer .= '<barcode type="' . $this->escape( Barcode_Symbology::epos_xml_name( $type ) ) . '" hri="below" height="' . $height . '" align="' . $this->escape( $this->align ) . '">' . $this->escape( $payload ) . '</barcode>'; |
| 567 |
$this->printer['align'] = null; |
| 568 |
} |
| 569 |
|
| 570 |
/** |
| 571 |
* Emit a native QR code (symbol) element. |
| 572 |
* |
| 573 |
* @param array $node The qrcode AST node. |
| 574 |
* |
| 575 |
* @return void |
| 576 |
*/ |
| 577 |
private function emit_qrcode( array $node ): void { |
| 578 |
$value = isset( $node['value'] ) ? (string) $node['value'] : ''; |
| 579 |
if ( '' === trim( $value ) ) { |
| 580 |
return; |
| 581 |
} |
| 582 |
$size = isset( $node['size'] ) ? (int) $node['size'] : 4; |
| 583 |
|
| 584 |
// <symbol> data shares the barcode escape layer (`\xnn`, `\\`). |
| 585 |
$payload = Barcode_Symbology::epos_xml_escape_data( $value ); |
| 586 |
|
| 587 |
$this->buffer .= '<symbol type="qrcode_model_2" level="default" width="' . $size . '" align="' . $this->escape( $this->align ) . '">' . $this->escape( $payload ) . '</symbol>'; |
| 588 |
$this->printer['align'] = null; |
| 589 |
} |
| 590 |
|
| 591 |
/** |
| 592 |
* Emit a paper feed of N lines. |
| 593 |
* |
| 594 |
* @param array $node The feed AST node. |
| 595 |
* |
| 596 |
* @return void |
| 597 |
*/ |
| 598 |
private function emit_feed( array $node ): void { |
| 599 |
$lines = Thermal_Bounds::clamp_int( |
| 600 |
isset( $node['lines'] ) ? $node['lines'] : null, |
| 601 |
Thermal_Bounds::FEED_LINES_MIN, |
| 602 |
Thermal_Bounds::FEED_LINES_MIN, |
| 603 |
Thermal_Bounds::FEED_LINES_MAX |
| 604 |
); |
| 605 |
$this->buffer .= '<feed line="' . $lines . '"/>'; |
| 606 |
} |
| 607 |
|
| 608 |
/** |
| 609 |
* Escape XML text content and attribute values. |
| 610 |
* |
| 611 |
* @param string $value Raw text. |
| 612 |
* |
| 613 |
* @return string The escaped text. |
| 614 |
*/ |
| 615 |
private function escape( string $value ): string { |
| 616 |
return htmlspecialchars( $value, ENT_XML1 | ENT_COMPAT, 'UTF-8' ); |
| 617 |
} |
| 618 |
} |
| 619 |
|
