From 9c53bd28a8ba5e54e07e4e286904d168c1b04789 Mon Sep 17 00:00:00 2001

From: Anonymous anonymous@zokni.xyz

Date: Thu, 11 Apr 2024 16:07:24 -0400

Subject: [PATCH 1/1] Merge version 0.2

textart | 337 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 337 insertions(+)

create mode 100755 textart

diff --git a/textart b/textart

new file mode 100755

index 0000000..c7815a5

--- /dev/null

+++ b/textart

@@ -0,0 +1,337 @@

+#!/usr/bin/php -q

+<?php

+/**

- textart-cli

- Version 0.2

- This is free and unencumbered software released into the public domain.

- Anyone is free to copy, modify, publish, use, compile, sell, or distribute

- this software, in any form, for any purpose, commercial or non-commercial,

- and by any means.

- If you require more legalese in your software than this, it means you live

- in a retarded clown country and you should probably do something about that.

+$version = "textart-cli version 0.2";

+if(!isset($argv[3])) {

echo <<<EOL

+$version

+Usage: textart [<max columns]

5color : Five shades of gray rectangles

5colorsq : Five shades of gray squares

braille : 2x4 Braille matrix

1x2block : 1x2 Unicode blocks

2x2block : 2x2 Unicode blocks

2x3block : 2x3 Unicode blocks

+EOL;

die;

+// Default maximum columns

+$maxcol = 100;

+// Supported text art formats

+$formats = array("5color", "5colorsq", "braille", "1x2block", "2x2block", "2x3block");

+// 5color art palettes

+$rec = array("█", "▓", "▒", "░", " ");

+$squ = array("██", "▓▓", "▒▒", "░░", " ");

+// Block art elements

+$blk1x2 = array(" ", "▀", "▄", "█");

+$blk2x2 = array(" ", "▘", "▖", "▌", "▝", "▀", "▞", "▛", "▗", "▚", "▄", "▙", "▐", "▜", "▟", "█");

+$blk2x3 = array(" ", "🬀", "🬃", "🬄", "🬏", "🬐", "🬓", "▌", "🬁", "🬂", "🬅", "🬆", "🬑", "🬒", "🬔", "🬕",

           "🬇", "🬈", "🬋", "🬌", "🬖", "🬗", "🬚", "🬛", "🬉", "🬊", "🬍", "🬎", "🬘", "🬙", "🬜", "🬝",

           "🬞", "🬟", "🬢", "🬣", "🬭", "🬮", "🬱", "🬲", "🬠", "🬡", "🬤", "🬥", "🬯", "🬰", "🬳", "🬴",

           "🬦", "🬧", "🬩", "🬪", "🬵", "🬶", "🬹", "🬺", "▐", "🬨", "🬫", "🬬", "🬷", "🬸", "🬻", "█"

```
          );
```

+// Process input

+$format = $argv[1];

+$img = $argv[2];

+$out = $argv[3];

+if(isset($argv[4]) && is_numeric($argv[4]))

$maxcol = $argv[4];

+elseif(isset($argv[4]))

fatal_error("Max columns is not numeric");

+// Validate format

+if(!in_array($format, $formats))

fatal_error("Invalid format '$format"");

+// Create temp file and download file to it

+$tmp = tempnam("", "textart");

+if($tmp === false)

fatal_error("Failed to create temp file");

+copy($img, $tmp);

+// Preprocess image to the target colorspace

+list($w, $h) = getimagesize($tmp);

+switch($format) {

// 5colorsq : Five shades of gray squares

case "5colorsq":

// Preprocess image with ImageMagick

$t_2 = tempnam("", "textart2") . ".png";

$scale = "";

// Scale to fix max columns if greater

if($w > ($maxcol/2))

```
 $scale = "-scale ".($maxcol/2)."x";
```

// Reduce to 4-bit gray

exec("convert $scale -type Grayscale -depth 4 $tmp $t_2");

rename($t_2, $tmp);

unset($t_2);

// Pull image to GD

$im = import_grayscale($tmp);

// Step through image from top left to bottom right writing gray shades

$o = "";

for($y=0; $y<imagesy($im); $y++) {

```
 for($x=0; $x<imagesx($im); $x++) {
```

   $pix = imagecolorat($im, $x, $y) & 0xff;

   // Reduce value from 255 to 5 shades

```
   if($pix == 0) $pix++;
```

   $o .= $squ[(ceil($pix / 0x33) - 1)];

```
 }
```

```
 $o .= "\n";
```

}

break;

// 5color : Five shades of gray rectangles

case "5color":

// Preprocess image with ImageMagick

// Scale to fix max columns if greater

if($w > $maxcol) {

 $t_2 = tempnam("", "textart2") . ".png";

 exec("convert -scale ".$maxcol."x $tmp $t_2");

```
 rename($t_2, $tmp);
```

```
 unset($t_2);
```

}

// Reduce vertical size 50% to suit rectangular pixels

$t_3 = tempnam("", "textart3") . ".png";

exec("convert -scale 100%x50% -type Grayscale -depth 4 $tmp $t_3");

rename($t_3, $tmp);

unset($t_3);

// Pull image to GD

$im = import_grayscale($tmp);

// Step through image from top left to bottom right writing gray shades

$o = "";

for($y=0; $y<imagesy($im); $y++) {

```
 for($x=0; $x<imagesx($im); $x++) {
```

   $pix = imagecolorat($im, $x, $y) & 0xff;

   // Reduce value from 255 to 5 shades

```
   if($pix == 0) $pix++;
```

   $o .= $rec[(ceil($pix / 0x33) - 1)];

```
 }
```

```
 $o .= "\n";
```

}

break;

case "braille":

// Preprocess image with ImageMagick

$t_2 = tempnam("", "textart2") . ".png";

$scale = "";

// Scale to fix max columns if greater

if($w > ($maxcol*2))

```
 $scale = "-scale ".($maxcol*2)."x";
```

exec("convert $scale -monochrome $tmp $t_2");

rename($t_2, $tmp);

unset($t_2);

// Pull image to GD, padding with blank space to nearest Braille tile

$im = pad_image(import_grayscale($tmp), 2, 4);

// Step through image from top left to bottom right writing Braille tiles

$o = "";

for($y=0; $y<imagesy($im); $y=$y+4) {

```
 for($x=0; $x<imagesx($im); $x=$x+2) {
```

  $o .= chr(0x28) . chr(get_braille_tile($im, $x, $y));

```
 }
```

```
 $o .= "\0\n";
```

}

// Convert UTF-16 to UTF-8

$o = iconv('UTF-16BE', 'UTF-8', $o);

break;

case "1x2block":

// Preprocess image with ImageMagick

$t_2 = tempnam("", "textart2") . ".png";

$scale = "";

// Scale to fix max columns if greater

if($w > ($maxcol))

```
 $scale = "-scale ".($maxcol)."x";
```

exec("convert $scale -monochrome $tmp $t_2");

rename($t_2, $tmp);

unset($t_2);

// Pull image to GD, padding with blank space to nearest Braille tile

$im = pad_image(import_grayscale($tmp), 1, 2);

// Step through image from top left to bottom right writing Braille tiles

$o = "";

for($y=0; $y<imagesy($im); $y=$y+2) {

```
 for($x=0; $x<imagesx($im); $x=$x+1) {
```

  $o .= $blk1x2[get_1x2_tile($im, $x, $y)];

```
 }
```

```
 $o .= "\n";
```

}

break;

case "2x2block":

// Preprocess image with ImageMagick

// Scale to fix max columns if greater

if($w > ($maxcol*2)) {

 $t_2 = tempnam("", "textart2") . ".png";

 exec("convert -scale ".($maxcol*2)."x $tmp $t_2");

```
 rename($t_2, $tmp);
```

```
 unset($t_2);
```

}

// Reduce vertical size 50% to suit rectangular pixels

$t_3 = tempnam("", "textart3") . ".png";

exec("convert -scale 100%x50% -monochrome $tmp $t_3");

rename($t_3, $tmp);

unset($t_3);

// Pull image to GD, padding with blank space to nearest Braille tile

$im = pad_image(import_grayscale($tmp), 2, 2);

// Step through image from top left to bottom right writing Braille tiles

$o = "";

for($y=0; $y<imagesy($im); $y=$y+2) {

```
 for($x=0; $x<imagesx($im); $x=$x+2) {
```

  $o .= $blk2x2[get_2x2_tile($im, $x, $y)];

```
 }
```

```
 $o .= "\n";
```

}

break;

case "2x3block":

// Preprocess image with ImageMagick

// Scale to fix max columns if greater

if($w > ($maxcol*2)) {

 $t_2 = tempnam("", "textart2") . ".png";

 exec("convert -scale ".($maxcol*2)."x $tmp $t_2");

```
 rename($t_2, $tmp);
```

```
 unset($t_2);
```

}

// Reduce vertical size 50% to suit rectangular pixels

$t_3 = tempnam("", "textart3") . ".png";

exec("convert -scale 100%x80% -monochrome $tmp $t_3");

rename($t_3, $tmp);

unset($t_3);

// Pull image to GD, padding with blank space to nearest Braille tile

$im = pad_image(import_grayscale($tmp), 2, 3);

// Step through image from top left to bottom right writing Braille tiles

$o = "";

for($y=0; $y<imagesy($im); $y=$y+3) {

```
 for($x=0; $x<imagesx($im); $x=$x+2) {
```

  $o .= $blk2x3[get_2x3_tile($im, $x, $y)];

```
 }
```

```
 $o .= "\n";
```

}

break;

+file_put_contents($out, $o);

+unlink($tmp);

+print "$version\nMode: $format\n$o";

+// Do fatal error

+function fatal_error($msg) {

print "Fatal Error: $msg\n";

die;

+// Convert 2x4 pixel area to braille

+function get_braille_tile($im, $x, $y) {

return(bindec(

    pixel(imagecolorat($im, $x+1, $y+3)) .

    pixel(imagecolorat($im, $x, $y+3)) .

    pixel(imagecolorat($im, $x+1, $y+2)) .

    pixel(imagecolorat($im, $x+1, $y+1)) .

    pixel(imagecolorat($im, $x+1, $y)) .

    pixel(imagecolorat($im, $x, $y+2)) .

    pixel(imagecolorat($im, $x, $y+1)) .

```
    pixel(imagecolorat($im, $x, $y))
```

```
    ));
```

+// Convert 1x2 pixel area to block

+function get_1x2_tile($im, $x, $y) {

return(bindec(

    pixel(imagecolorat($im, $x, $y+1)) .

```
    pixel(imagecolorat($im, $x, $y))
```

```
    ));
```

+// Convert 2x2 pixel area to block

+function get_2x2_tile($im, $x, $y) {

return(bindec(

    pixel(imagecolorat($im, $x+1, $y+1)) .

    pixel(imagecolorat($im, $x+1, $y)) .

    pixel(imagecolorat($im, $x, $y+1)) .

```
    pixel(imagecolorat($im, $x, $y))
```

```
    ));
```

+// Convert 2x3 pixel area to block

+function get_2x3_tile($im, $x, $y) {

return(bindec(

    pixel(imagecolorat($im, $x+1, $y+2)) .

    pixel(imagecolorat($im, $x+1, $y+1)) .

    pixel(imagecolorat($im, $x+1, $y)) .

    pixel(imagecolorat($im, $x, $y+2)) .

    pixel(imagecolorat($im, $x, $y+1)) .

```
    pixel(imagecolorat($im, $x, $y))
```

```
    ));
```

+// Return ON/OFF state using 0x80 as midpoint

+function pixel($color) {

if(($color & 0xff) < 0x80)

return(1);

else

return(0);

+function import_grayscale($file) {

// Convert input to truecolor and then grayscale

$im = @imagecreatefrompng($file);

if(!imageistruecolor($im)) {

imagepalettetotruecolor($im);

}

imagefilter($im, IMG_FILTER_GRAYSCALE);

return($im);

+// Pad image to size needed for clean conversion

+function pad_image($im, $col, $row) {

$t_w = ceil(imagesx($im)/$col) * $col;

$t_h = ceil(imagesy($im)/$row) * $row;

$temp = imagecreatetruecolor($t_w, $t_h);

$white = imagecolorallocate($temp, 255, 255, 255);

imagefill($temp, 0, 0, $white);

imagecopy($temp, $im, 0, 0, 0, 0, imagesx($im), imagesy($im));

return($temp);

+?>

\ No newline at end of file

2.34.1

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