Added .ascii img <url> command to image to IRC art conversion

README.md

@@ -9,6 +9,7 @@ There is no API key needed, no local art files needed, & no reason to not setup
 ## Dependencies
 * [python](https://www.python.org/)
 * [chardet](https://pypi.org/project/chardet/) *(`pip install chardet`)*
+* [pillow](https://pypi.org/project/pillow/) *(`pip install pillow`)*
 
 ## Commands
 | Command                              | Description                                                |
@@ -16,6 +17,7 @@ There is no API key needed, no local art files needed, & no reason to not setup
 | `@scroll`                            | information about scroll                                   |
 | `.ascii <name>`                      | play the \<name> art file                                  |
 | `.ascii dirs`                        | list of art directories                                    |
+| `.ascii img <ur>`                    | convert image \<ur> to art                                 |
 | `.ascii list`                        | list of art filenames                                      |
 | `.ascii play <url>`                  | play the contents of \<url> *(must be a raw pastebin url)* |
 | `.ascii random [dir]`                | play random art, optionally from the [dir] directory only  |
@@ -29,14 +31,16 @@ There is no API key needed, no local art files needed, & no reason to not setup
 **NOTE**: The sync & settings commands are admin only! `admin` is a *nick!user@host* mask defined in [scroll.py](https://github.com/ircart/scroll/blob/master/scroll.py)
 
 ## Settings
-| Setting   | Description                                                                  |
+| Setting     | Description                                                                  |
-| --------- | ---------------------------------------------------------------------------- |
+| ----------- | ---------------------------------------------------------------------------- |
-| `flood`   | delay between each command                                                   |
+| `flood`     | delay between each command                                                   |
-| `ignore`  | directories to ignore in `.ascii random` *(comma seperated list, no spaces)* |
+| `ignore`    | directories to ignore in `.ascii random` *(comma seperated list, no spaces)* |
-| `lines`   | max lines outside of #scroll                                                 |
+| `lines`     | max lines outside of #scroll                                                 |
-| `msg`     | delay between each message sent                                              |
+| `msg`       | delay between each message sent                                              |
-| `results` | max results to return in `.ascii search`                                     |
+| `paste`     | enable or disable `.ascii play`                                              |
-| `paste`   | enable or disable `.ascii play`                                              |
+| `png_width` | maximum width for `.ascii img` output                                        |
+| `results`   | max results to return in `.ascii search`                                     |
+
 
 ## Preview
 
@@ -44,8 +48,7 @@ There is no API key needed, no local art files needed, & no reason to not setup
 
 Come pump with us in **#scroll** on [irc.supernets.org](ircs://irc.supernets.org)
 
-## Mirrors
+___
-- [acid.vegas](https://git.acid.vegas/scroll)
+
-- [GitHub](https://github.com/ircart/scroll)
+###### Mirrors
-- [GitLab](https://gitlab.com/ircart/scroll)
+[acid.vegas](https://git.acid.vegas/asciiblaster) • [GitHub](https://github.com/ircart/asciiblaster) • [GitLab](https://gitlab.com/ircart/asciiblaster) • [SourceHut](https://git.sr.ht/~acidvegas/asciiblaster) • [SuperNETs](https://git.supernets.org/ircart/asciiblaster)
-- [SuperNETs](https://git.supernets.org/ircart/scroll)

img2irc.py

@@ -0,0 +1,112 @@
+#!/usr/bin/env python
+# Scroll IRC Art Bot - Developed by acidvegas in Python (https://git.acid.vegas/scroll)
+
+'''big props to wrk (wr34k) for this one, did most of the work, just cleaned it up a little'''
+
+import io
+
+try:
+	from PIL import Image
+except ImportError:
+	raise SystemExit('missing required \'pillow\' library (https://pypi.org/project/pillow/)')
+
+async def convert(data, img_width=80):
+	image = Image.open(io.BytesIO(data))
+	del data
+	(width, height) = image.size
+	img_height = img_width / width * height
+	del height, width
+	image.thumbnail((img_width, img_height), Image.Resampling.LANCZOS)
+	del img_height, img_width
+	ansi_image = AnsiImage(image)
+	del image
+	CHAR = '\u2580'
+	buf = ''
+	for (y, row) in enumerate(ansi_image.halfblocks):
+		last_fg = -1
+		last_bg = -1
+		for (x, pixel_pair) in enumerate(row):
+			fg = pixel_pair.top.irc
+			bg = pixel_pair.bottom.irc
+			if x != 0:
+				if fg == last_fg and bg == last_bg:
+					buf += CHAR
+				elif bg == last_bg:
+					buf += f'\x03{fg}{CHAR}'
+				else:
+					buf += f'\x03{fg},{bg}{CHAR}'
+			else:
+				buf += f'\x03{fg},{bg}{CHAR}'
+			last_fg = fg
+			last_bg = bg
+		if y != len(ansi_image.halfblocks) - 1:
+			buf += '\n'
+		else:
+			buf += '\x0f'
+	return buf.splitlines()
+
+def hex_to_rgb(color):
+	r = color >> 16
+	g = (color >> 8) % 256
+	b = color % 256
+	return (r,g,b)
+
+def rgb_to_hex(rgb):
+	(r,g,b) = rgb
+	return (r << 16) + (g << 8) + b
+
+def color_distance_squared(c1, c2):
+	dr = c1[0] - c2[0]
+	dg = c1[1] - c2[1]
+	db = c1[2] - c2[2]
+	return dr * dr + dg * dg + db * db
+
+class AnsiPixel:
+	def __init__(self, pixel_u32):
+		self.RGB99 = [
+			0xffffff, 0x000000, 0x00007f, 0x009300, 0xff0000, 0x7f0000, 0x9c009c, 0xfc7f00,
+			0xffff00, 0x00fc00, 0x009393, 0x00ffff, 0x0000fc, 0xff00ff, 0x7f7f7f, 0xd2d2d2,
+			0x470000, 0x472100, 0x474700, 0x324700, 0x004700, 0x00472c, 0x004747, 0x002747,
+			0x000047, 0x2e0047, 0x470047, 0x47002a, 0x740000, 0x743a00, 0x747400, 0x517400,
+			0x007400, 0x007449, 0x007474, 0x004074, 0x000074, 0x4b0074, 0x740074, 0x740045,
+			0xb50000, 0xb56300, 0xb5b500, 0x7db500, 0x00b500, 0x00b571, 0x00b5b5, 0x0063b5,
+			0x0000b5, 0x7500b5, 0xb500b5, 0xb5006b, 0xff0000, 0xff8c00, 0xffff00, 0xb2ff00,
+			0x00ff00, 0x00ffa0, 0x00ffff, 0x008cff, 0x0000ff, 0xa500ff, 0xff00ff, 0xff0098,
+			0xff5959, 0xffb459, 0xffff71, 0xcfff60, 0x6fff6f, 0x65ffc9, 0x6dffff, 0x59b4ff,
+			0x5959ff, 0xc459ff, 0xff66ff, 0xff59bc, 0xff9c9c, 0xffd39c, 0xffff9c, 0xe2ff9c,
+			0x9cff9c, 0x9cffdb, 0x9cffff, 0x9cd3ff, 0x9c9cff, 0xdc9cff, 0xff9cff, 0xff94d3,
+			0x000000, 0x131313, 0x282828, 0x363636, 0x4d4d4d, 0x656565, 0x818181, 0x9f9f9f,
+			0xbcbcbc, 0xe2e2e2, 0xffffff
+		]
+		self.irc  = self.nearest_hex_color(pixel_u32, self.RGB99)
+
+	def nearest_hex_color(self, pixel_u32, hex_colors):
+		rgb_colors = [hex_to_rgb(color) for color in hex_colors]
+		rgb_colors.sort(key=lambda rgb: color_distance_squared(hex_to_rgb(pixel_u32), rgb))
+		hex_color = rgb_to_hex(rgb_colors[0])
+		return hex_colors.index(hex_color)
+
+class AnsiPixelPair:
+	def __init__(self, top, bottom):
+		self.top = top
+		self.bottom = bottom
+
+class AnsiImage:
+	def __init__(self, image):
+		self.bitmap = [[rgb_to_hex(image.getpixel((x, y))) for x in range(image.size[0])] for y in range(image.size[1])]
+		if len(self.bitmap) % 2 != 0:
+			self.bitmap.append([0 for x in range(image.size[0])])
+		ansi_bitmap = [[AnsiPixel(y) for y in x] for x in self.bitmap]
+		ansi_canvas = list()
+		for two_rows in range(0, len(ansi_bitmap), 2):
+			top_row = ansi_bitmap[two_rows]
+			bottom_row = ansi_bitmap[two_rows+1]
+			ansi_row = list()
+			for i in range(len(self.bitmap[0])):
+				top_pixel = top_row[i]
+				bottom_pixel = bottom_row[i]
+				pixel_pair = AnsiPixelPair(top_pixel, bottom_pixel)
+				ansi_row.append(pixel_pair)
+			ansi_canvas.append(ansi_row)
+		self.image = image
+		self.halfblocks = ansi_canvas

scroll.py

@@ -2,6 +2,7 @@
 # Scroll IRC Art Bot - Developed by acidvegas in Python (https://git.acid.vegas/scroll)
 
 import asyncio
+import io
 import json
 import random
 import re
@@ -10,7 +11,7 @@ import time
 import urllib.request
 
 class connection:
-	server  = 'irc.server.com'
+	server  = 'irc.network.com'
 	port    = 6697
 	ipv6    = False
 	ssl     = True
@@ -75,7 +76,7 @@ class Bot():
 		self.last            = time.time()
 		self.loops           = dict()
 		self.playing         = False
-		self.settings        = {'flood':1, 'ignore':'big,birds,doc,gorf,hang,nazi,pokemon', 'lines':300, 'msg':0.03, 'results':25, 'paste':True}
+		self.settings        = {'flood':1, 'ignore':'big,birds,doc,gorf,hang,nazi,pokemon', 'lines':500, 'msg':0.03, 'paste':True, 'png_width':80, 'results':25}
 		self.slow            = False
 		self.reader          = None
 		self.writer          = None
@@ -231,6 +232,15 @@ class Bot():
 									for dir in self.db:
 										await self.sendmsg(chan, '[{0}] {1}{2}'.format(color(str(list(self.db).index(dir)+1).zfill(2), pink), dir.ljust(10), color('('+str(len(self.db[dir]))+')', grey)))
 										await asyncio.sleep(self.settings['msg'])
+								elif args[1] == 'img' and len(args) == 3:
+									url = args[2]
+									if url.startswith('https://') or url.startswith('http://'):
+										content = urllib.request.urlopen(url).read()
+										ascii   = await img2irc.convert(content, int(self.settings['png_width']))
+										if ascii:
+											for line in ascii:
+												await self.sendmsg(chan, line)
+												await asyncio.sleep(self.settings['msg'])
 								elif msg == '.ascii list':
 									await self.sendmsg(chan, underline + color('https://raw.githubusercontent.com/ircart/ircart/master/ircart/.list', light_blue))
 								elif msg == '.ascii random':
@@ -275,7 +285,7 @@ class Bot():
 										setting = args[2]
 										option  = args[3]
 										if setting in self.settings:
-											if setting in ('flood','lines','msg','results'):
+											if setting in ('flood','lines','msg','png_width','results'):
 												try:
 													option = float(option)
 													self.settings[setting] = option
@@ -324,5 +334,8 @@ try:
 	import chardet
 except ImportError:
 	raise SystemExit('missing required \'chardet\' library (https://pypi.org/project/chardet/)')
-else:
+try:
-	asyncio.run(Bot().connect())
+	import img2irc
+except ImportError:
+	raise SystemExit('missing required \'img2irc\' file (https://github.com/ircart/scroll/blob/master/img2irc.py)')
+asyncio.run(Bot().connect())