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commit 2def6524cdacb69c72760bf55a41089257c0bb07
Author: ntohidi <nasrin@kidocode.com>
Date:   Mon Aug 4 18:59:10 2025 +0800

    refactor: consolidate WebScrapingStrategy to use LXML implementation only

    BREAKING CHANGE: None - full backward compatibility maintained

    This commit simplifies the content scraping architecture by removing the
    redundant BeautifulSoup-based WebScrapingStrategy implementation and making
    it an alias for LXMLWebScrapingStrategy.

    Changes:
    - Remove ~1000 lines of BeautifulSoup-based WebScrapingStrategy code
    - Make WebScrapingStrategy an alias for LXMLWebScrapingStrategy
    - Update LXMLWebScrapingStrategy to inherit directly from ContentScrapingStrategy
    - Add required methods (scrap, ascrap, process_element, _log) to LXMLWebScrapingStrategy
    - Maintain 100% backward compatibility - existing code continues to work

    Code changes:
    - crawl4ai/content_scraping_strategy.py: Remove WebScrapingStrategy class, add alias
    - crawl4ai/async_configs.py: Remove WebScrapingStrategy from imports
    - crawl4ai/__init__.py: Update imports to show alias relationship
    - crawl4ai/types.py: Update type definitions
    - crawl4ai/legacy/web_crawler.py: Update import to use alias
    - tests/async/test_content_scraper_strategy.py: Update to use LXMLWebScrapingStrategy
    - docs/examples/scraping_strategies_performance.py: Update to use single strategy

    Documentation updates:
    - docs/md_v2/core/content-selection.md: Update scraping modes section
    - docs/md_v2/migration/webscraping-strategy-migration.md: Add migration guide
    - CHANGELOG.md: Document the refactoring under [Unreleased]

    Benefits:
    - 10-20x faster HTML parsing for large documents
    - Reduced memory usage and simplified codebase
    - Consistent parsing behavior
    - No migration required for existing users

    All existing code using WebScrapingStrategy continues to work without
    modification, while benefiting from LXML's superior performance.
This commit is contained in:
ntohidi
2025-08-04 19:02:01 +08:00
parent 307fe28b32
commit 7a6ad547f0
11 changed files with 175 additions and 921 deletions
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7
docs/examples/scraping_strategies_performance.py
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@@ -1,5 +1,6 @@
import time, re
from crawl4ai.content_scraping_strategy import WebScrapingStrategy, LXMLWebScrapingStrategy
from crawl4ai.content_scraping_strategy import LXMLWebScrapingStrategy
# WebScrapingStrategy is now an alias for LXMLWebScrapingStrategy
import time
import functools
from collections import defaultdict
@@ -57,7 +58,7 @@ methods_to_profile = [
# Apply decorators to both strategies
for strategy, name in [(WebScrapingStrategy, "Original"), (LXMLWebScrapingStrategy, "LXML")]:
for strategy, name in [(LXMLWebScrapingStrategy, "LXML")]:
for method in methods_to_profile:
apply_decorators(strategy, method, name)
@@ -85,7 +86,7 @@ def generate_large_html(n_elements=1000):
def test_scraping():
# Initialize both scrapers
original_scraper = WebScrapingStrategy()
original_scraper = LXMLWebScrapingStrategy()
selected_scraper = LXMLWebScrapingStrategy()
# Generate test HTML