clrghouz/app/Classes/Font.php

380 lines
11 KiB
PHP

<?php
namespace App\Classes;
use Illuminate\Support\Arr;
use Illuminate\Support\Collection;
class Font
{
private const DEBUG = FALSE;
protected const MSG_WIDTH = 79;
private string $text = '';
private int $width = 0;
private int $height = 0;
public function __get($key)
{
switch ($key) {
case 'height':
return $this->height;
case 'width':
return $this->width;
default:
throw new \Exception(sprintf('Unknown key %s',$key));
}
}
/**
* Message text, goes after header, and if a logo, to the right of it
*
* @param string $text
*/
public function addText(string $text)
{
$this->text = $text;
$this->dimensions();
}
/**
* Characters used in the font
*
* @return Collection
*/
private function chars(): Collection
{
static $chars = [];
if ($this->text && empty($chars[$this->text])) {
// Trim any leading/trailing spaces
$text = trim(strtolower($this->text));
$chars[$this->text] = collect();
// Work out the characters we need
foreach (array_unique(str_split($text)) as $c) {
if (! $x=Arr::get(static::FONT,$c))
continue;
$chars[$this->text]->put($c,$x);
}
}
return $chars[$this->text] ?: collect();
}
/**
* Full width of the rendered text
*
* @return void
*/
private function dimensions(): void
{
$chars = $this->chars();
$escape = FALSE;
foreach (str_split(strtolower($this->text)) as $c) {
if (ord($c) === 0x1b) {
$escape = TRUE;
continue;
} elseif ($escape) {
$escape = FALSE;
continue;
}
$this->width += ($x=Arr::get($chars->get($c),0)) ? count($x) : 1;
if ($x)
$this->height = (($y=count($chars->get($c))) > $this->height) ? $y : $this->height;
}
// If the last character is a space, we'll reduce the width
$space = TRUE;
foreach ($chars->get($c) as $x)
if (array_pop($x) != 32) {
$space = FALSE;
break;
}
if ($space)
$this->width--;
}
public function render_line(int $line): string
{
$chars = $this->chars();
$result = '';
$escape = FALSE;
$ansi = FALSE;
foreach (str_split(strtolower($this->text)) as $c) {
if (ord($c) === 0x1b) {
$escape = TRUE;
} elseif ($escape && $c) {
$result .= ANSI::ansi_color(ord($c));
$escape = FALSE;
$ansi = TRUE;
} elseif (($c === ' ') || (! $font_chars=$chars->get($c))) {
$result .= $c;
} else {
foreach (Arr::get($font_chars,$line) as $char)
$result .= chr($char);
}
}
return $result.($ansi ? ANSI::ansi_color(0x0e) : '');
}
/**
* This function will format text to static::MSG_WIDTH, as well as adding the logo.
* It is up to the text to be spaced appropriately to wrap around the icon.
*
* @param string $text
* @param ANSI|null $logo
* @param bool $right
* @param int $step
* @return string
*/
public static function format_msg(string $text,ANSI $logo=NULL,int $step=1,bool $right=FALSE): string
{
$result = '';
$result_height = 0;
$current_pos = 0;
while ($current_pos < strlen($text)) {
$result_line = ''; // Line being created
$lc = 0; // Line length count (without ANSI)
$buffer = $step ? $logo->width->skip(intdiv($result_height,$step)*$step)->take($step)->max() : 1;
// Add our logo
if ($result_height <= $logo->height-1) {
$line = ANSI::bin_to_ansi([$logo->line($result_height)],FALSE);
$lc = $logo->line_width($logo->line_raw($result_height),FALSE);
$result_line = str_repeat(' ',ANSI::LOGO_OFFSET_WIDTH)
.$line
.str_repeat(' ',ANSI::LOGO_BUFFER_WIDTH+($right ? 0 : $buffer-$lc));
}
// Look for a return
$return_pos = strpos($text,"\r",$current_pos);
// We have a return
if ($return_pos !== FALSE) {
$subtext = substr($text,$current_pos,$return_pos-$current_pos);
// If the reset of the string will fit on the current line
} elseif (strlen($text)-$current_pos < static::MSG_WIDTH-$lc) {
$subtext = substr($text,$current_pos);
// Get the next lines worth of chars
} else {
$subtext = substr($text,$current_pos,static::MSG_WIDTH-$buffer);
// Include the text up to the last space
if (substr($text,$current_pos+strlen($subtext),1) !== ' ')
$subtext = substr($text,$current_pos,strrpos($subtext,' '));
}
$result .= $result_line.
str_repeat(' ',($right ? static::MSG_WIDTH-$lc-strlen($subtext)+((! $lc) ? (ANSI::LOGO_OFFSET_WIDTH+ANSI::LOGO_BUFFER_WIDTH) : 0) : 0))
.$subtext."\r\n";
$current_pos += strlen($subtext)+1;
$result_height++;
}
// In case our text is shorter than the logo
for (;$result_height<$logo->height;$result_height++) {
$result .= str_repeat(' ',ANSI::LOGO_OFFSET_WIDTH)
.ANSI::bin_to_ansi([$logo->line($result_height)],FALSE)
.str_repeat(' ',ANSI::LOGO_BUFFER_WIDTH)
."\r\n";
}
return $result;
}
/**
* The height of this font (based on the 1st char)
*
* @return int
*/
public static function height(): int
{
return count(Arr::get(static::FONT,'a'));
}
/**
* Convert text into a graphical font
*
* @param string $text
* @param Collection $width
* @param int $height
* @param int $step
* @return string
*/
public static function fontText(string $text,Collection $width,int $height,int $step): string
{
return self::text_to_font($text,$width,$height,$step);
}
/**
* Convert text to this font
* This function will pad the text to fit around the icon, so that the icon+font fils to self::MSG_WIDTH
*
* @param string $text
* @param Collection $icon_width Width to make the font
* @param int $icon_height Minimal width for this height, then full width (self::MSG_WIDTH)
* @param int $step The grouping of lines (normally font height) around the icon
* @return string
*/
protected static function text_to_font(string $text,Collection $icon_width,int $icon_height,int $step): string
{
$chars = collect(); // Characters needed for this $text
$font_height = 0; // Max height of text using font
// Trim any leading/trailing spaces
$text = trim(strtolower($text));
// Work out the characters we need
foreach (array_unique(str_split($text)) as $c) {
if (($c === ' ') || (! $x=Arr::get(static::FONT,$c))) {
continue;
}
$chars->put($c,$x);
$font_height = (($y=count($x)) > $font_height) ? $y : $font_height;
}
if (self::DEBUG) dump(['uniquechars'=>$chars->count(),'font_height'=>$font_height]);
if (self::DEBUG) dump(['drawing'=>$text,'textlen'=>strlen($text),'logo_width'=>$icon_width,'logo_height'=>$icon_height]);
$result = ''; // Our result
$current_pos = 0; // Our current position through $text
$result_height = 0; // Our current line height
$line_pos = 0; // Our current character position for this line of the font
while ($current_pos < strlen($text)) {
if (self::DEBUG) dump(sprintf('current position %d of %d',$current_pos,strlen($text)));
for ($line=0;$line<$font_height;$line++) {
if ($line === 0) {
$line_icon_width = $icon_width
->skip(intdiv($result_height,$step)*$step)
->take($step)
->max();
if ($line_icon_width)
$line_icon_width += ANSI::LOGO_OFFSET_WIDTH+ANSI::LOGO_BUFFER_WIDTH;
$line_width = self::MSG_WIDTH-$line_icon_width; // Width we are working towards, initially $icon_width until height then its self::MSG_WIDTH
}
$line_result = ''; // Our current line of font
if (self::DEBUG) dump(sprintf('- current line %d of %d',$line+1,$font_height));
// If we are mid way through rendering a font, and have already finished with the height offset, we'll need to fill with blanks
if (($line_width !== self::MSG_WIDTH) && ($result_height > $icon_height-1))
$line_result .= str_repeat(' ',$line_icon_width);
$line_pos = $current_pos;
$next_space_pos = $current_pos;
$next_next_space_width = 0; // What our width will be after the next next space
$next_next_space_pos = 0; // The position of the next space after the next one
$next_next_space_chars = 0; // The number of chars between the next space and the next next space
$current_line_width = 0; // Our current width of the line
while ($current_line_width < $line_width) {
if (self::DEBUG) dump(sprintf(' - current width %d of %d, and we are working on char %d',$current_line_width,$line_width,$line_pos));
$find_space_pos = $line_pos;
// Find our next char
if (self::DEBUG) dump(sprintf(' - find our next space from %d after %d',$find_space_pos,$next_space_pos));
$next_space_chars = 0;
if ($next_space_pos <= $line_pos) {
if (! $next_next_space_pos) {
while (($find_space_pos < strlen($text)) && (($c=substr($text,$find_space_pos++,1)) !== ' ')) {
$x = count(Arr::get($chars->get($c),$line));
if (self::DEBUG) dump(sprintf(' + char is [%s] (%x) and will take %d chars',$c,ord($c),$x));
$next_space_chars += $x;
}
$next_space_pos = $find_space_pos;
$next_next_space_pos = $find_space_pos;
$next_next_space_width = $current_line_width+$next_space_chars;
} else {
$next_space_pos = $next_next_space_pos;
$next_space_chars = $next_next_space_chars;
}
// Find our next next space, which we'll use to decide whether we need to include a space when we find one
$next_next_space_chars = 0;
while (($next_next_space_pos < strlen($text)) && (($c=substr($text,$next_next_space_pos++,1)) !== ' ')) {
$next_next_space_chars += count(Arr::get($chars->get($c),$line,[]));
if (self::DEBUG) dump(sprintf(' + char is [%s] (%x) and will take us to %d',$c,ord($c),$next_next_space_chars));
}
$next_next_space_width = $current_line_width+$next_space_chars+$next_next_space_chars;
}
if (self::DEBUG)
dump(sprintf(' - our next space is: [%s] (%x) at %d in %d chars, taking %d chars (taking our width to %d)',$c,ord($c),$find_space_pos,$find_space_pos-$line_pos,$next_space_chars,$current_line_width+$next_space_chars));
// We are only spaces, so we can return to the next line
if ($current_line_width+$next_space_chars > $line_width) {
if (self::DEBUG) dump(' = next char should go onto new line');
// Only go to a new line if we already have chars
if ($current_line_width)
break;
}
$c = substr($text,$line_pos,1);
if (($c === ' ') || (! $font_chars=$chars->get($c))) {
// Ignore this space if we are at the beginning of the line
if ($current_line_width && ($next_next_space_width < $line_width)) {
$line_result .= $c;
$current_line_width++;
}
} else {
if (self::DEBUG) dump(sprintf('adding char [%s] which is [%s]',$c,join('|',Arr::get($font_chars,$line))));
foreach ($x=Arr::get($font_chars,$line) as $char)
$line_result .= chr($char);
$current_line_width += count($x);
}
$line_pos++;
if (self::DEBUG) dump(sprintf(' = line width [%d of %d] and we are on char [%d] our space is [%d]',$current_line_width,$line_width,$line_pos,$find_space_pos));
if ($line_pos === strlen($text)) {
if (self::DEBUG) dump(sprintf(' = we are finished, as we are on char %d on line %d',$line_pos,$line));
break;
}
}
$result_height++;
$result .= $line_result."\r";
}
$current_pos = $line_pos;
if (self::DEBUG) dump(sprintf('= new line starting with char [%d] - our width is [%d] and we are on line [%d]',$current_pos,$line_width,$result_height));
}
if (self::DEBUG)
dd(['result'=>$result]);
return $result;
}
}