#!/usr/bin/env python3 """ Version Comparison Tool Compare different versions of system prompts """ import os import sys import difflib from pathlib import Path import json from datetime import datetime class VersionComparer: def __init__(self, repo_path): self.repo_path = Path(repo_path) def find_versions(self, tool_name): """Find all versions of prompts for a tool""" tool_dir = self.repo_path / tool_name if not tool_dir.exists(): return [] versions = [] for file in tool_dir.glob('*.txt'): if 'prompt' in file.stem.lower(): versions.append({ 'name': file.stem, 'path': file, 'size': file.stat().st_size, 'modified': datetime.fromtimestamp(file.stat().st_mtime) }) return sorted(versions, key=lambda x: x['modified']) def compare_files(self, file1, file2, context_lines=3): """Compare two files and return diff""" with open(file1, 'r', encoding='utf-8', errors='ignore') as f1: lines1 = f1.readlines() with open(file2, 'r', encoding='utf-8', errors='ignore') as f2: lines2 = f2.readlines() diff = difflib.unified_diff( lines1, lines2, fromfile=str(file1), tofile=str(file2), lineterm='', n=context_lines ) return list(diff) def calculate_similarity(self, file1, file2): """Calculate similarity ratio between two files""" with open(file1, 'r', encoding='utf-8', errors='ignore') as f1: text1 = f1.read() with open(file2, 'r', encoding='utf-8', errors='ignore') as f2: text2 = f2.read() return difflib.SequenceMatcher(None, text1, text2).ratio() def count_changes(self, diff): """Count additions, deletions, and modifications""" added = 0 removed = 0 for line in diff: if line.startswith('+') and not line.startswith('+++'): added += 1 elif line.startswith('-') and not line.startswith('---'): removed += 1 return { 'added': added, 'removed': removed, 'total': added + removed } def generate_html_diff(self, file1, file2, tool_name): """Generate HTML diff view""" diff = self.compare_files(file1, file2, context_lines=5) similarity = self.calculate_similarity(file1, file2) changes = self.count_changes(diff) html = f''' Version Comparison - {tool_name}

Version Comparison: {tool_name}

Comparing {Path(file1).name} vs {Path(file2).name}

{changes['added']} Lines Added
{changes['removed']} Lines Removed
{changes['total']} Total Changes
{similarity:.1%} Similarity
Unified Diff 
'''
        
        for line in diff:
            line_class = ''
            if line.startswith('+') and not line.startswith('+++'):
                line_class = 'added'
            elif line.startswith('-') and not line.startswith('---'):
                line_class = 'removed'
            elif line.startswith('@@'):
                line_class = 'info'
            
            escaped_line = line.replace('&', '&').replace('<', '<').replace('>', '>')
            html += f'
{escaped_line}
'
        
        html += '''
''' return html def compare_tool_versions(self, tool_name, output_format='text'): """Compare all versions of a tool""" versions = self.find_versions(tool_name) if len(versions) < 2: print(f"Found {len(versions)} version(s) for {tool_name}") print("Need at least 2 versions to compare") return print(f"\nšŸ“Š Comparing {len(versions)} versions of {tool_name}\n") for i in range(len(versions) - 1): v1 = versions[i] v2 = versions[i + 1] print(f"Comparing: {v1['name']} ā†’ {v2['name']}") similarity = self.calculate_similarity(v1['path'], v2['path']) diff = self.compare_files(v1['path'], v2['path']) changes = self.count_changes(diff) print(f" Similarity: {similarity:.1%}") print(f" Lines added: {changes['added']}") print(f" Lines removed: {changes['removed']}") print(f" Total changes: {changes['total']}") if output_format == 'html': output_file = self.repo_path / f"comparison_{v1['name']}_vs_{v2['name']}.html" html = self.generate_html_diff(v1['path'], v2['path'], tool_name) with open(output_file, 'w', encoding='utf-8') as f: f.write(html) print(f" HTML diff saved to: {output_file}") print() def main(): import argparse parser = argparse.ArgumentParser(description='Compare versions of system prompts') parser.add_argument('--tool', required=True, help='Tool name (e.g., "Cursor Prompts")') parser.add_argument('--repo', default='.', help='Repository path') parser.add_argument('--format', choices=['text', 'html', 'json'], default='text', help='Output format') parser.add_argument('--v1', help='First version file name') parser.add_argument('--v2', help='Second version file name') parser.add_argument('--all', action='store_true', help='Compare all versions') args = parser.parse_args() comparer = VersionComparer(args.repo) if args.all: comparer.compare_tool_versions(args.tool, output_format=args.format) elif args.v1 and args.v2: tool_dir = Path(args.repo) / args.tool file1 = tool_dir / args.v1 file2 = tool_dir / args.v2 if not file1.exists() or not file2.exists(): print(f"Error: Files not found") return if args.format == 'html': html = comparer.generate_html_diff(file1, file2, args.tool) print(html) else: diff = comparer.compare_files(file1, file2) for line in diff: print(line) else: versions = comparer.find_versions(args.tool) print(f"\nFound {len(versions)} version(s) for {args.tool}:") for v in versions: print(f" - {v['name']} ({v['size']} bytes, modified {v['modified']})") print("\nUse --all to compare all versions, or --v1 and --v2 to compare specific versions") if __name__ == '__main__': main()