Module fingerprint 

Content fingerprinting and change detection for halldyll-parser

This module handles:

• Content hashing for change detection
• Structural fingerprinting
• AMP page detection
• Content comparison
• Cache control hints

Structs

AmpInfo

AMP (Accelerated Mobile Pages) information

CacheHints

Cache hints extracted from the page

ContentFingerprint

Content fingerprint for change detection

Functions

content_similarity

Get content similarity between two HTML strings (0.0 to 1.0)

extract_amp_info

Extract AMP information from document

extract_cache_hints

Extract cache hints from meta tags

fingerprint_document

Generate fingerprint from parsed document

generate_fingerprint

Generate content fingerprint from HTML

get_amp_url

Get AMP URL if available

has_content_changed

Check if content has changed between two HTML strings

is_amp_page

Check if page is an AMP page

quick_hash

Quick hash of HTML content