mirror of
https://github.com/ArchiveBox/ArchiveBox
synced 2024-11-10 14:44:18 +00:00
85 lines
2.3 KiB
Python
85 lines
2.3 KiB
Python
__package__ = 'archivebox.extractors'
|
|
|
|
import re
|
|
from typing import Optional
|
|
|
|
from ..index.schema import Link, ArchiveResult, ArchiveOutput, ArchiveError
|
|
from ..util import (
|
|
enforce_types,
|
|
is_static_file,
|
|
download_url,
|
|
htmldecode,
|
|
)
|
|
from ..config import (
|
|
TIMEOUT,
|
|
CHECK_SSL_VALIDITY,
|
|
SAVE_TITLE,
|
|
CURL_BINARY,
|
|
CURL_VERSION,
|
|
CURL_USER_AGENT,
|
|
setup_django,
|
|
)
|
|
from ..logging_util import TimedProgress
|
|
|
|
|
|
HTML_TITLE_REGEX = re.compile(
|
|
r'<title.*?>' # start matching text after <title> tag
|
|
r'(.[^<>]+)', # get everything up to these symbols
|
|
re.IGNORECASE | re.MULTILINE | re.DOTALL | re.UNICODE,
|
|
)
|
|
|
|
|
|
@enforce_types
|
|
def should_save_title(link: Link, out_dir: Optional[str]=None) -> bool:
|
|
# if link already has valid title, skip it
|
|
if link.title and not link.title.lower().startswith('http'):
|
|
return False
|
|
|
|
if is_static_file(link.url):
|
|
return False
|
|
|
|
return SAVE_TITLE
|
|
|
|
@enforce_types
|
|
def save_title(link: Link, out_dir: Optional[str]=None, timeout: int=TIMEOUT) -> ArchiveResult:
|
|
"""try to guess the page's title from its content"""
|
|
|
|
setup_django(out_dir=out_dir)
|
|
from core.models import Snapshot
|
|
|
|
output: ArchiveOutput = None
|
|
cmd = [
|
|
CURL_BINARY,
|
|
'--silent',
|
|
'--max-time', str(timeout),
|
|
'--location',
|
|
'--compressed',
|
|
*(['--user-agent', '{}'.format(CURL_USER_AGENT)] if CURL_USER_AGENT else []),
|
|
*([] if CHECK_SSL_VALIDITY else ['--insecure']),
|
|
link.url,
|
|
]
|
|
status = 'succeeded'
|
|
timer = TimedProgress(timeout, prefix=' ')
|
|
try:
|
|
html = download_url(link.url, timeout=timeout)
|
|
match = re.search(HTML_TITLE_REGEX, html)
|
|
output = htmldecode(match.group(1).strip()) if match else None
|
|
if output:
|
|
if not link.title or len(output) >= len(link.title):
|
|
Snapshot.objects.filter(url=link.url, timestamp=link.timestamp).update(title=output)
|
|
else:
|
|
raise ArchiveError('Unable to detect page title')
|
|
except Exception as err:
|
|
status = 'failed'
|
|
output = err
|
|
finally:
|
|
timer.end()
|
|
|
|
return ArchiveResult(
|
|
cmd=cmd,
|
|
pwd=out_dir,
|
|
cmd_version=CURL_VERSION,
|
|
output=output,
|
|
status=status,
|
|
**timer.stats,
|
|
)
|