Page rendering using ANSI support
This commit is contained in:
Deon George
parent
a24bba0481
commit
b35655a163
@ -38,22 +38,24 @@ class ANSI
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/* MAGIC METHODS */
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public function __construct(string $file)
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public function __construct(string $file='')
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{
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$this->width = collect();
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$this->ansi = collect();
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$f = fopen($file,'r');
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while (! feof($f)) {
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$line = stream_get_line($f,self::BUFREAD,"\r");
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if ($file) {
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$f = fopen($file,'r');
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while (! feof($f)) {
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$line = stream_get_line($f,self::BUFREAD,"\r");
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// If the last line is blank, we'll ignore it
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if ((! feof($f)) || $line) {
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$this->width->push(self::line_width($line,FALSE));
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$this->ansi->push(array_map(function($item) { return ord($item); },str_split($line,1)));
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// If the last line is blank, we'll ignore it
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if ((! feof($f)) || $line) {
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$this->width->push(self::line_width($line,FALSE));
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$this->ansi->push(array_map(function($item) { return ord($item); },str_split($line,1)));
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}
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}
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fclose($f);
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}
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fclose($f);
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return $this->ansi;
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}
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@ -85,6 +87,33 @@ class ANSI
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return static::bin_to_ansi((new self($file))->ansi->toArray());
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}
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/**
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* Convert an array of ANSI codes into a binary equivalent
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*
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* @param array $code
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* @return string
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*/
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public static function ansi_code(array $code): string
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{
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if (!$code)
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return '';
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return "\x1b".chr(self::code($code));
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}
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/**
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* Render an ANSI binary code into an ANSI string
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*
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* @param int $code
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* @return string
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*/
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public static function ansi_color(int $code): string
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{
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static $current = [];
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return "\x1b[".self::color($code,$current);
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}
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/**
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* Convert a binary ANS file to ANSI text
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*
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@ -230,7 +259,10 @@ class ANSI
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foreach ($code as $item) {
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switch ($item) {
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// Color Reset
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case 0: $result = 0; break;
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case 0:
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// Low Intensity
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case 2: $result = 0; break;
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// High Intensity
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case 1: $result |= self::COLOR_HIGH; break;
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@ -262,18 +294,8 @@ class ANSI
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return $result;
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}
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/**
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* Convert binary code to ANSI escape code
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*
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* @param int $code
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* @param array $current
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* @return string
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*/
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private static function color(int $code,array &$current): string
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public static function color_array(int $code): array
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{
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if (! $current)
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$current = static::reset();
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$h = ($code&0x01);
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switch ($x=(($code>>1)&0x07)) {
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@ -301,28 +323,45 @@ class ANSI
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default:
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dump(['unknown color'=>$x]);
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}
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$return = '';
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$highlight_changed = false;
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if ($h !== $current['h']) {
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$return .= $h;
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$current['h'] = $h;
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return ['h'=>$h,'f'=>$f,'b'=>$b];
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}
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/**
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* Convert binary code to ANSI escape code
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*
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* @param int $code
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* @param array $current
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* @return string
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*/
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private static function color(int $code,array &$current): string
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{
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if (! $current)
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$current = static::reset();
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$return = '';
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$color = self::color_array($code);
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$highlight_changed = FALSE;
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if ($color['h'] !== $current['h']) {
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$return .= $color['h'] ?: ($code != 0x0e ? 2 : 0);
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$current['h'] = $color['h'];
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$highlight_changed = TRUE;
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}
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if ($f !== $current['f']) {
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if (! $highlight_changed || $h || (($f != self::DEFAULT_FORE) || ($b != self::DEFAULT_BACK)))
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$return .= (strlen($return) ? ';' : '').$f;
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if ($color['f'] !== $current['f']) {
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if (! $highlight_changed || $color['h'] || (($color['f'] != self::DEFAULT_FORE) || ($color['b'] != self::DEFAULT_BACK)))
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$return .= (strlen($return) ? ';' : '').$color['f'];
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$x = $f;
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$current['f'] = $f;
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$x = $color['f'];
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$current['f'] = $color['f'];
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}
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if ($b !== $current['b']) {
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if (! $highlight_changed || $h || (($x != self::DEFAULT_FORE) || ($b != self::DEFAULT_BACK)))
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$return .= (strlen($return) ? ';' : '').$b;
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if ($color['b'] !== $current['b']) {
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if (! $highlight_changed || $color['h'] || (($x != self::DEFAULT_FORE) || ($color['b'] != self::DEFAULT_BACK)))
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$return .= (strlen($return) ? ';' : '').$color['b'];
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$current['b'] = $b;
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$current['b'] = $color['b'];
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}
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return ($return !== '') ? $return.'m' : '';
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@ -354,6 +393,19 @@ class ANSI
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];
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}
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/**
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* Show a line with embedded color codes in ANSI
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*
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* @param string $text
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* @return string
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*/
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public static function text_to_ansi(string $text): string
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{
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$ansi = preg_match('/\x1b./',$text);
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return self::bin_to_ansi([array_map(function($item) {return ord($item); },str_split($text))],FALSE).((strlen($text) && $ansi) ? "\x1b[0m" : '');
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}
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/* METHODS */
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/**
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@ -11,6 +11,127 @@ class Font
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protected const MSG_WIDTH = 79;
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private string $text = '';
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private int $width = 0;
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private int $height = 0;
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public function __get($key)
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{
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switch ($key) {
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case 'height':
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return $this->height;
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case 'width':
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return $this->width;
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default:
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throw new \Exception(sprintf('Unknown key %s',$key));
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}
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}
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/**
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* Message text, goes after header, and if a logo, to the right of it
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*
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* @param string $text
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*/
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public function addText(string $text)
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{
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$this->text = $text;
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$this->dimensions();
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}
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/**
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* Characters used in the font
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*
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* @return Collection
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*/
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private function chars(): Collection
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{
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static $chars = NULL;
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if (is_null($chars) && $this->text) {
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// Trim any leading/trailing spaces
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$text = trim(strtolower($this->text));
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$chars = collect();
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// Work out the characters we need
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foreach (array_unique(str_split($text)) as $c) {
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if (! $x=Arr::get(static::FONT,$c))
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continue;
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$chars->put($c,$x);
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}
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}
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return $chars ?: collect();
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}
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/**
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* Full width of the rendered text
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*
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* @return void
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*/
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private function dimensions(): void
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{
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$chars = $this->chars();
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$escape = FALSE;
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foreach (str_split(strtolower($this->text)) as $c) {
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if ($c == "\x1b") {
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$escape = TRUE;
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continue;
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} elseif ($escape) {
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$escape = FALSE;
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continue;
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}
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$this->width += ($x=Arr::get($chars->get($c),0)) ? count($x) : 1;
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if ($x)
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$this->height = (($y=count($chars->get($c))) > $this->height) ? $y : $this->height;
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}
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// If the last character is a space, we'll reduce the width
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$space = TRUE;
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foreach ($chars->get($c) as $line => $x)
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if (array_pop($x) != 32) {
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$space = FALSE;
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break;
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}
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if ($space)
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$this->width--;
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}
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public function render_line(int $line): string
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{
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$chars = $this->chars();
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$result = '';
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$escape = FALSE;
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$ansi = FALSE;
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foreach (str_split(strtolower($this->text)) as $c) {
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if (ord($c) == 0x1b) {
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$escape = TRUE;
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} elseif ($escape && $c) {
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$result .= ANSI::ansi_color(ord($c));
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$escape = FALSE;
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$ansi = TRUE;
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} elseif (($c == ' ') || (! $font_chars=$chars->get($c))) {
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$result .= $c;
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} else {
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foreach (Arr::get($font_chars,$line) as $char)
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$result .= chr($char);
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}
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}
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return $result.($ansi ? ANSI::ansi_color(0x0e) : '');
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}
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/**
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* This function will format text to static::MSG_WIDTH, as well as adding the logo.
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* It is up to the text to be spaced appropriately to wrap around the icon.
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@ -146,9 +267,9 @@ class Font
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for ($line=0;$line<$font_height;$line++) {
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if ($line == 0) {
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$line_icon_width = $icon_width
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->skip(intdiv($result_height,$step)*$step)
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->take($step)
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->max();
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->skip(intdiv($result_height,$step)*$step)
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->take($step)
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->max();
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if ($line_icon_width)
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$line_icon_width += ANSI::LOGO_OFFSET_WIDTH+ANSI::LOGO_BUFFER_WIDTH;
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@ -4,9 +4,8 @@ namespace App\Classes\Fonts;
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use App\Classes\Font;
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class Thick extends Font
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final class Thick extends Font
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{
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protected const FONT = [
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'a' => [
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[0xdc,0xdc,0xdc,0x20],
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@ -2,8 +2,6 @@
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namespace App\Classes\Fonts;
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use Illuminate\Support\Collection;
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use App\Classes\Font;
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final class Thin extends Font
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@ -104,11 +102,18 @@ final class Thin extends Font
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[0xc0,0xc4,0xbf],
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[0xc0,0xc4,0xd9],
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],
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/*
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't' => [
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[0xc2,0x20,0x20],
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[0xc5,0xc4,0x20],
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[0xc1,0xc4,0xd9],
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],
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*/
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't' => [
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[0xda,0xc2,0xbf],
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[0x20,0xb3,0x20],
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[0x20,0xc1,0x20],
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],
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'u' => [
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[0xda,0x20,0xbf],
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[0xb3,0x20,0xb3],
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292
app/Classes/Page.php
Normal file
292
app/Classes/Page.php
Normal file
@ -0,0 +1,292 @@
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<?php
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namespace App\Classes;
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use Illuminate\Support\Arr;
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/**
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* Page layout is as follows
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*
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* |----------|--------------|
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* | LOGO | HEADER |
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* | LEFT BOX | TEXT |
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* |----------|--------------|
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*/
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class Page
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{
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protected const MSG_WIDTH = 78;
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private const LOGO_OFFSET_WIDTH = 1;
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private Font $header;
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private string $header_foot = '';
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private bool $header_right;
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private int $header_underline = 0;
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private Font $left_box;
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private ANSI $logo;
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private int $step = 0;
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private string $text = '';
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private bool $text_right = FALSE;
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public function __construct(bool $crlf=FALSE)
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{
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$this->header = new Font;
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$this->logo = new ANSI;
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$this->left_box = new Font;
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$this->crlf = $crlf;
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}
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public function __get($key)
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{
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switch ($key) {
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// Height of the header
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case 'header_height':
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return $this->header->height+($this->header_foot ? 1 : 0)+($this->header_underline ? 1 : 0);
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// The width of the left column
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case 'left_width':
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return $this->logo->width->max() ?: $this->left_box->width;
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// The height of the left column
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case 'left_height':
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return $this->logo->height+$this->left_box->height+self::LOGO_OFFSET_WIDTH;
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// The right width
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case 'right_width':
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return self::MSG_WIDTH-$this->left_width;
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default:
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throw new \Exception(sprintf('Unknown key %s',$key));
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}
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}
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/**
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* Message header - goes at top, right of logo
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*
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* @param Font $text
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* @param string $foot
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* @param bool $right
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* @param int $underline
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* @throws \Exception
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*/
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public function addHeader(Font $text,string $foot='',bool $right=FALSE,int $underline=0): void
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{
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if (($text->width > $this->right_width) || (strlen($foot) > $this->right_width))
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throw new \Exception(sprintf('Header or Header Footer greater than available width'));
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$this->header = $text;
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$this->header_foot = $foot;
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$this->header_right = $right;
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$this->header_underline = $underline;
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}
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/**
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* Content that can go below logo, to the left of the text, if text $logo_left_border is TRUE
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*
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* @param Font $text
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* @throws \Exception
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*/
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public function addLeftBoxContent(Font $text): void
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{
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if ($this->left_width && ($text->width > $this->left_width))
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throw new \Exception(sprintf('Leftbox content greater than icon width'));
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$this->left_box = $text;
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}
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/**
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* Message logo - goes at top left
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*
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* @param ANSI $ansi
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*/
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public function addLogo(ANSI $ansi): void
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{
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$this->logo = $ansi;
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}
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/**
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* Message text, goes after header, and if a logo, to the right of it
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*
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* @param string $text Main Body Text
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* @param bool $right Right Aligned
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*/
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public function addText(string $text,bool $right=FALSE)
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{
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$this->text = $text;
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$this->text_right = $right;
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}
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/**
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* Render the page.
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*
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* @return string
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* @throws \Exception
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*/
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public function render(): string
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{
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$result = '';
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$result_height = 0;
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$current_pos = 0;
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$text_length = strlen($this->text);
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$this->step = 0; // @todo temp
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$text_current_color = NULL;
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while (TRUE) {
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$result_line = ''; // Line being created
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$lc = 0; // Line length count (without ANSI control codes)
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// The buffer represents how many spaces need to pad between the left_width and whatever is drawn on the left
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if (! $this->step) {
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if (($this->left_height > $this->header_height) || ($result_height < $this->header_height-1))
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$buffer = $this->left_width+($this->left_width ? self::LOGO_OFFSET_WIDTH*2 : 0);
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else
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$buffer = 0;
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} else {
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$buffer = 0;
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/*
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// @todo
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$buffer = $this->step
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? $this->logo->width->skip(intdiv($result_height,$this->step)*$this->step)->take($this->step)->max()
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: 1;
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*/
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}
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if ($this->left_width) {
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// Add our logo
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if ($result_height < $this->logo->height) {
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$line = ANSI::bin_to_ansi([$this->logo->line($result_height)],FALSE);
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$lc = $this->logo->line_width($this->logo->line_raw($result_height),FALSE);
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$result_line = str_repeat(' ',self::LOGO_OFFSET_WIDTH)
|
||||
.$line
|
||||
.str_repeat(' ',$buffer-$lc-($this->left_width ? self::LOGO_OFFSET_WIDTH : 0));
|
||||
|
||||
} elseif (self::LOGO_OFFSET_WIDTH && $this->logo->height && ($result_height == $this->logo->height) && $this->left_box->height) {
|
||||
$result_line = str_repeat(' ',$buffer);
|
||||
|
||||
} elseif ($result_height < $this->left_height-($this->logo->height ? 0 : self::LOGO_OFFSET_WIDTH)) {
|
||||
$line = $this->left_box->render_line($result_height-($this->logo->height ? self::LOGO_OFFSET_WIDTH : 0)-$this->logo->height);
|
||||
$lc = $this->left_box->width;
|
||||
|
||||
$result_line = str_repeat(' ',($this->left_box->width ? self::LOGO_OFFSET_WIDTH : 0))
|
||||
.$line
|
||||
.str_repeat(' ',($this->left_box->width ? $buffer-$lc-($this->left_width ? self::LOGO_OFFSET_WIDTH : 0) : (($current_pos < $text_length) ? $buffer : 0)));
|
||||
|
||||
} else {
|
||||
if ($current_pos < $text_length)
|
||||
$result_line = str_repeat(' ',$buffer);
|
||||
}
|
||||
}
|
||||
|
||||
// Add our header
|
||||
if ($result_height <= $this->header->height-1) {
|
||||
$result_line .= str_repeat(' ',$this->header_right ? self::MSG_WIDTH-($this->left_width ? self::LOGO_OFFSET_WIDTH*2 : 0)-$this->left_width-$this->header->width : 0)
|
||||
.$this->header->render_line($result_height);
|
||||
}
|
||||
|
||||
// Add our header footer
|
||||
if ($x=ANSI::line_width($this->header_foot,FALSE)) {
|
||||
if ($result_height == $this->header->height) {
|
||||
$result_line .= str_repeat(' ',($this->header_right ? self::MSG_WIDTH-($this->left_width ? self::LOGO_OFFSET_WIDTH*2 : 0)-$this->left_width-$x : 0))
|
||||
.ANSI::text_to_ansi($this->header_foot);
|
||||
}
|
||||
}
|
||||
|
||||
// Add our header underline
|
||||
if ($this->header_underline) {
|
||||
if ($result_height == $this->header->height+($this->header_foot ? 1 : 0)) {
|
||||
$result_line .= str_repeat(chr($this->header_underline),self::MSG_WIDTH-$buffer);
|
||||
}
|
||||
}
|
||||
|
||||
$subtext = '';
|
||||
$subtext_ansi = '';
|
||||
$subtext_length = 0;
|
||||
|
||||
if ($current_pos < $text_length) {
|
||||
if ($result_height >= $this->header_height) {
|
||||
// Look for a return
|
||||
$return_pos = strpos($this->text,"\r",$current_pos);
|
||||
|
||||
// We have a return
|
||||
if ($return_pos !== FALSE) {
|
||||
// If the remaining text is within our width, we'll use it all.
|
||||
if ($return_pos-$current_pos < self::MSG_WIDTH-$buffer) {
|
||||
$subtext = substr($this->text,$current_pos,$return_pos-$current_pos);
|
||||
|
||||
// Look for the space.
|
||||
} else {
|
||||
$space_pos = strrpos(substr($this->text,$current_pos,($return_pos-$current_pos > static::MSG_WIDTH-$this->left_width ? static::MSG_WIDTH-$this->left_width : $return_pos-$current_pos)),' ');
|
||||
$subtext = substr($this->text,$current_pos,$space_pos);
|
||||
}
|
||||
|
||||
// If the reset of the string will fit on the current line
|
||||
} elseif ($text_length-$current_pos < static::MSG_WIDTH-$buffer) {
|
||||
$subtext = substr($this->text,$current_pos);
|
||||
|
||||
// Get the next lines worth of chars
|
||||
} else {
|
||||
$subtext = $this->text_substr(substr($this->text,$current_pos),static::MSG_WIDTH-$buffer);
|
||||
|
||||
// Include the text up to the last space
|
||||
if (substr($this->text,$current_pos+strlen($subtext),1) !== ' ')
|
||||
$subtext = substr($subtext,0,strrpos($subtext,' '));
|
||||
}
|
||||
|
||||
$current_pos += strlen($subtext)+1;
|
||||
}
|
||||
|
||||
if ($subtext) {
|
||||
$subtext_length = ANSI::line_width($subtext,FALSE);
|
||||
$subtext_ansi = ANSI::text_to_ansi(($text_current_color ? "\x1b".$text_current_color : '').$subtext);
|
||||
|
||||
// Get our last color used, for the next line.
|
||||
$m = [];
|
||||
preg_match('/^.*(\x1b(.))+(.*?)$/s',$subtext,$m);
|
||||
if (Arr::get($m,2))
|
||||
$text_current_color = $m[2];
|
||||
}
|
||||
}
|
||||
|
||||
if ($result_line || $subtext) {
|
||||
$result .= $result_line.
|
||||
($subtext_ansi
|
||||
? str_repeat(' ',
|
||||
($this->text_right && ($result_height > $this->header_height-1) ? static::MSG_WIDTH-$subtext_length-$buffer : 0)).$subtext_ansi
|
||||
: '');
|
||||
|
||||
$result .= $this->crlf ? "\n\r" : "\r";
|
||||
}
|
||||
|
||||
$result_height++;
|
||||
|
||||
if (($result_height > $this->logo->height) &&
|
||||
($result_height > $this->left_height) &&
|
||||
($current_pos >= $text_length))
|
||||
{
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return $result;
|
||||
}
|
||||
|
||||
private function text_substr(string $text,int $goal): string
|
||||
{
|
||||
$chars = $goal;
|
||||
|
||||
while (($x=ANSI::line_width($subtext=substr($text,0,$chars),FALSE)) < $goal) {
|
||||
$chars += ($chars-$x);
|
||||
}
|
||||
|
||||
// If the last char is an escape, we need to more chars until the last char is no longer an escape.
|
||||
while (preg_match('/\x1b$/',$subtext) && (strlen($subtext) < strlen($text))) {
|
||||
$subtext .= substr($text,strlen($subtext),2);
|
||||
}
|
||||
|
||||
return $subtext;
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user