Add search module, re-export it

minigrep_py/__init__.py

@@ -1,4 +1,5 @@
 # Local Library
 from .parser import ArgumentParser
+from .search import Search
 
-__all__ = ["ArgumentParser"]
+__all__ = ["ArgumentParser", "Search"]

minigrep_py/search.py

@@ -0,0 +1,36 @@
+# Standard Library
+import re
+from dataclasses import dataclass
+from io import TextIOBase
+from typing import Self
+
+
+@dataclass
+class SearchConfig:
+    patterns: list[re.Pattern]
+    input: str
+
+    @classmethod
+    def new(cls, patterns: list[str], input: TextIOBase) -> Self:
+        pats = [re.compile(pat) for pat in patterns]
+        return cls(pats, input.read())
+
+
+class Search:
+    __slots__ = ("__config",)
+
+    Config = SearchConfig
+
+    def __init__(self, config: SearchConfig) -> None:
+        self.__config = config
+
+    def run(self) -> list[str]:
+        return [
+            line
+            for line in self.__config.input.splitlines()
+            if any(pat.search(line) for pat in self.__config.patterns)
+        ]
+
+    @classmethod
+    def new(cls, patterns: list[str], input: TextIOBase) -> Self:
+        return cls(cls.Config.new(patterns, input))