Initial upload: Shell History Alias Generator with full test suite

shell_alias_gen/parsers/fish.py

@@ -0,0 +1,71 @@
+"""Fish history parser."""
+
+import os
+import json
+from datetime import datetime
+from pathlib import Path
+from typing import List, Optional
+
+from .base import HistoryParser, ParsedCommand
+
+
+class FishHistoryParser(HistoryParser):
+    """Parser for Fish shell history files."""
+    
+    SHELL_NAME = "fish"
+    DEFAULT_HISTORY_DIR = os.path.expanduser("~/.config/fish/history")
+    
+    def get_default_history_locations(self) -> List[str]:
+        """Return default locations for fish history files."""
+        history_dir = Path(self.DEFAULT_HISTORY_DIR)
+        if history_dir.exists() and history_dir.is_dir():
+            return list(history_dir.glob("*.json"))
+        return []
+    
+    def parse_file(self, filepath: str) -> List[ParsedCommand]:
+        """Parse a fish 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 fish history content from a string."""
+        commands = []
+        
+        try:
+            data = json.loads(content)
+            if isinstance(data, list):
+                for line_num, item in enumerate(data, start=1):
+                    if isinstance(item, dict) and 'text' in item:
+                        timestamp = None
+                        if 'timestamp' in item:
+                            try:
+                                timestamp = datetime.fromtimestamp(item['timestamp'])
+                            except (ValueError, TypeError):
+                                pass
+                        
+                        cmd = ParsedCommand(
+                            raw_command=item['text'],
+                            timestamp=timestamp,
+                            line_number=line_num
+                        )
+                        commands.append(cmd)
+        except json.JSONDecodeError:
+            pass
+        
+        return commands
+    
+    def parse_all_history_files(self) -> List[ParsedCommand]:
+        """Parse all fish history files in the default directory."""
+        all_commands = []
+        locations = self.get_default_history_locations()
+        
+        for filepath in locations:
+            all_commands.extend(self.parse_file(str(filepath)))
+        
+        return all_commands