158 lines
5.3 KiB
Python
158 lines
5.3 KiB
Python
"""
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Calculator plugin for the launcher.
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Evaluates mathematical expressions and converts units.
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"""
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import math
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import re
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import subprocess
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import time
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from typing import List
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import utils.icons as icons
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from modules.launcher.plugin_base import PluginBase
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from modules.launcher.result import Result
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from utils.conversion import Conversion
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class CalculatorPlugin(PluginBase):
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"""
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Plugin for calculating mathematical expressions and converting units.
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"""
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def __init__(self):
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super().__init__()
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self.display_name = "Calculator"
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self.description = "Evaluate mathematical expressions and convert units"
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# Safe functions for evaluation
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self.safe_functions = {
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"abs": abs,
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"round": round,
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"min": min,
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"max": max,
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"sum": sum,
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"pow": pow,
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"sqrt": math.sqrt,
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"sin": math.sin,
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"cos": math.cos,
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"tan": math.tan,
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"asin": math.asin,
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"acos": math.acos,
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"atan": math.atan,
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"log": math.log,
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"log10": math.log10,
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"exp": math.exp,
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"pi": math.pi,
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"e": math.e,
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}
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# Initialize conversion utility
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self.converter = Conversion()
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# Pre-compiled regex patterns
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self.expression_pattern = re.compile(r"[\d+\-*/^()=]")
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self.number_pattern = re.compile(r"\d")
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self.conversion_pattern = re.compile(
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r"(\d+(?:\.\d+)?)\s*([a-zA-Z]+)\s*(?:to|in|=)\s*([a-zA-Z]+)"
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)
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# Cache for conversion results
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self._conversion_cache = {}
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self._last_cache_cleanup = time.time()
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self._cache_cleanup_interval = 300 # 5 minutes
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def initialize(self):
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"""Initialize the files plugin."""
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self.set_triggers(["=", "= "])
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def _cleanup_cache(self):
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"""Clean up old cache entries."""
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current_time = time.time()
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if current_time - self._last_cache_cleanup > self._cache_cleanup_interval:
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self._conversion_cache.clear()
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self._last_cache_cleanup = current_time
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def query(self, query: str) -> List[Result]:
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"""Process a query and return results."""
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if not query:
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return []
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# Clean up cache periodically
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self._cleanup_cache()
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# Check if it's a conversion query
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conversion_match = self.conversion_pattern.match(query)
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if conversion_match:
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try:
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value, from_unit, to_unit = conversion_match.groups()
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value = float(value)
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# Check cache first
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cache_key = f"{value}_{from_unit}_{to_unit}"
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if cache_key in self._conversion_cache:
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result = self._conversion_cache[cache_key]
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else:
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# Use the conversion utility
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result = self.converter.convert(value, from_unit, to_unit)
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# Cache the result
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self._conversion_cache[cache_key] = result
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return [
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Result(
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title=f"{result:.6g} {to_unit}",
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subtitle=f"{value} {from_unit} = {result:.6g} {to_unit}",
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icon_markup=icons.calculator,
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action=lambda r=f"{result:.6g}": self._copy_to_clipboard(r),
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relevance=1.0,
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plugin_name=self.display_name,
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data={"from": (value, from_unit), "to": (result, to_unit)},
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)
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]
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except ValueError as e:
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return [
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Result(
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title="Invalid conversion",
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subtitle=str(e),
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icon_markup=icons.calculator,
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relevance=0.0,
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plugin_name=self.display_name,
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)
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]
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# Check if it's a math expression
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if self.expression_pattern.search(query):
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try:
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# Evaluate the expression
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result = eval(query, {"__builtins__": {}}, self.safe_functions)
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if isinstance(result, (int, float)):
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return [
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Result(
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title=f"{result:.6g}",
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subtitle=f"{query} = {result:.6g}",
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icon_markup=icons.calculator,
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action=lambda r=f"{result:.6g}": self._copy_to_clipboard(r),
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relevance=1.0,
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plugin_name=self.display_name,
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)
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]
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except Exception:
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pass
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return []
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def _copy_to_clipboard(self, text: str):
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"""Copy text to clipboard using cliphist."""
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try:
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# First copy to clipboard
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subprocess.run(["wl-copy"], input=text.encode(), check=True)
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# Then store in cliphist
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subprocess.run(["cliphist", "store"], input=text.encode(), check=True)
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except subprocess.CalledProcessError:
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# If cliphist fails, at least we have the text in clipboard
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pass
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def cleanup(self):
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"""Clean up resources."""
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self._conversion_cache.clear()
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