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opreturn.py
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#! /usr/bin/env python3
from PIL import ImageColor
from vicariouspanel import NodeyezPanel
import re
import sys
import vicariousbitcoin
import vicarioustext
class OPReturnPanel(NodeyezPanel):
def __init__(self):
"""Instantiates a new OP_RETURN panel"""
# Define which additional attributes we have
self.configAttributes = {
# legacy key name mappings
"colorBackground": "backgroundColor",
"colorTextFG": "textColor",
"colorTextFG1": "dataRowEvenTextColor",
"colorTextFG2": "dataRowOddTextColor",
"sleepInterval": "interval",
# panel specific key names
"dataRowEvenTextColor": "dataRowEvenTextColor",
"dataRowOddTextColor": "dataRowOddTextColor",
"excludedPatterns": "excludedPatterns",
}
# Define our defaults (all panel specific key names should be listed)
self._defaultattr("dataRowEvenTextColor", "#ff7f00")
self._defaultattr("dataRowOddTextColor", "#dddd00")
self._defaultattr("excludedPatterns", [
"^[+=\-s]:(ATOM|AVAX|BCH|BNB|BTC|DOGE|ETH|GAIA|LTC|MAYA|RUNE|THOR|USDC).*",
"^[+=\-s]:[A-Z]{3,4}\..*",
"^[+=\-s]:[A-Za-z]{1,4}:.*",
"^.{1,5}$",
"^.*(BERNSTEIN 2.0|HEX.com|WanChain).*",
"^(Binance|Betnomi|Kinesis|RSK|ScytheX.io|btt|euklid|omni).*$",
"^(OUT|REFUND):[A-F0-9]{64}.*",
"^(DC-L5|SWAPTX|MIGRATE|inbit|ion):.*",
"^J_(NEW_CONTRACT|WITHDRAW|REFUND).*",
"^[A-Za-z0-9]{34}$",
"^[A-Za-z0-9]{39}$",
"^[A-Za-z0-9]{40}$",
"^[A-Za-z0-9]{48}$",
"^[A-Za-z0-9]{64}$",
"Casper",
"Bitzlato",
"Describe payment",
"Deposite",
"Exodus Wallet",
"Kucoin",
"btc transfer",
"charge",
"consolidate",
"donation",
"hash payment",
"https://trustless.computer",
])
self._defaultattr("footerEnabled", False)
self._defaultattr("interval", 540)
self._defaultattr("watermarkAnchor", "bottomright")
self._defaultattr("watermarkEnabled", True)
# Initialize
super().__init__(name="opreturn")
self.previousblock = 0
def fetchData(self):
"""Fetches all the data needed for this panel"""
self.blocknumber = vicariousbitcoin.getcurrentblock()
if self.previousblock == self.blocknumber: return
self.opreturns = vicariousbitcoin.getblockopreturns(self.blocknumber)
def run(self):
if self.previousblock == self.blocknumber:
self._markAsRan()
return
self.previousblock = self.blocknumber
self.headerText = f"OP_RETURN entries for {self.blocknumber}"
# Build up list of acceptable OP_RETURNs
oc = len(self.opreturns)
opreturns = []
for opreturn in self.opreturns:
excluded = False
for pattern in self.excludedPatterns:
if opreturn == pattern:
excluded = True
break
if re.compile(pattern).search(opreturn) is not None:
excluded = True
break
if not excluded and opreturn not in opreturns:
opreturns.append(opreturn)
if len(opreturns) == 0:
self.log(f"Block {self.blocknumber} has no suitable OP_RETURN values (excluded {oc})")
self._markAsRan()
return
self.log(f"Block {self.blocknumber} has {len(opreturns)} suitable OP_RETURN values (of {oc})")
super().startImage()
# Basic inits for tracking
rowIndex = 0
texty = self.getInsetTop()
textystop = self.height - self.getFooterHeight()
# Determine font size based on how many op returns to render
fontsize = int(self.height * (20/320))
fontsize = int(self.height * (18/320)) if len(opreturns) > 2 else fontsize
fontsize = int(self.height * (16/320)) if len(opreturns) > 4 else fontsize
fontsize = int(self.height * (14/320)) if len(opreturns) > 6 else fontsize
fontsize = int(self.height * (12/320)) if len(opreturns) > 7 else fontsize
# Render the op returns
for opreturn in opreturns:
rowIndex += 1
rowTextColor = self.dataRowEvenTextColor if rowIndex % 2 == 0 else self.dataRowOddTextColor
rwords = opreturn.split()
rpart, rwords = vicarioustext.getmaxtextforwidth(self.draw, rwords, self.width, fontsize)
while len(rpart) > 0:
_,sh,_ = vicarioustext.gettextdimensions(self.draw, rpart, fontsize)
texty += sh
if texty > textystop: break
vicarioustext.drawbottomlefttext(self.draw, rpart, fontsize, 0, texty, ImageColor.getrgb(rowTextColor), False)
rpart, rwords = vicarioustext.getmaxtextforwidth(self.draw, rwords, self.width, fontsize)
super().finishImage()
# --------------------------------------------------------------------------------------
# Entry point if running this script directly
# --------------------------------------------------------------------------------------
if __name__ == '__main__':
p = OPReturnPanel()
# If arguments were passed in, treat as a single run
if len(sys.argv) > 1:
arg1 = sys.argv[1]
if arg1 in ['-h','--help']:
arg0 = sys.argv[0]
print(f"Produces an image with OP_RETURN data")
print(f"Usage:")
print(f"1) Call without arguments to run continuously using the configuration or defaults")
print(f"2) Call with an argument other then -h or --help to run once and exit")
print(f" If a number is provided, it will be treated as a block number to look for OP_RETURNs")
print(f" {arg0} 722231")
else:
p.blocknumber = vicariousbitcoin.getcurrentblock()
if re.match(r'^-?\d+$', arg1) is not None:
if int(arg1) <= p.blocknumber:
p.blocknumber = int(arg1)
p.opreturns = vicariousbitcoin.getblockopreturns(p.blocknumber)
p.run()
exit(0)
# Continuous run
p.runContinuous()