Initial upload: Shell History Alias Generator with full test suite

shell_alias_gen/parsers/zsh.py

@@ -0,0 +1,52 @@
+"""Zsh history parser."""
+
+import os
+import re
+from datetime import datetime
+from typing import List, Optional
+
+from .base import HistoryParser, ParsedCommand
+
+
+class ZshHistoryParser(HistoryParser):
+    """Parser for Zsh history files."""
+    
+    SHELL_NAME = "zsh"
+    DEFAULT_HISTORY_FILE = os.path.expanduser("~/.zsh_history")
+    
+    ZSH_HISTORY_PATTERN = re.compile(
+        r'^: (\d+):(\d+);(.*)$',
+        re.MULTILINE
+    )
+    
+    def parse_file(self, filepath: str) -> List[ParsedCommand]:
+        """Parse a zsh history file."""
+        try:
+            with open(filepath, 'r', encoding='utf-8', errors='replace') as f:
+                content = f.read()
+            return self.parse_content(content)
+        except FileNotFoundError:
+            return []
+        except Exception:
+            return []
+    
+    def parse_content(self, content: str) -> List[ParsedCommand]:
+        """Parse zsh history content from a string."""
+        commands = []
+        matches = self.ZSH_HISTORY_PATTERN.findall(content)
+        
+        for line_num, match in enumerate(matches, start=1):
+            timestamp_str, _ , command = match
+            try:
+                timestamp = datetime.fromtimestamp(int(timestamp_str))
+            except (ValueError, OSError):
+                timestamp = None
+            
+            cmd = ParsedCommand(
+                raw_command=command,
+                timestamp=timestamp,
+                line_number=line_num
+            )
+            commands.append(cmd)
+        
+        return commands