def meta_to_tag(context, event):
tagging_config = get_tagging_config()
meta = image_to_meta(context,
use_exif=tagging_config.use_exif,
use_iptc=tagging_config.use_iptc,
use_xmp=tagging_config.use_xmp)
allowed_exif = tagging_config.exif_fields
allowed_iptc = tagging_config.iptc_fields
allowed_xmp = tagging_config.xmp_fields
if hasattr(meta['iptc'], 'data'):
iptc = meta['iptc'].data
else:
iptc = meta['iptc']
exif = meta['exif']
xmp = meta['xmp']
tags = list(context.Subject())
if tagging_config.use_iptc:
tags = tags + get_tags(iptc, allowed_iptc)
if tagging_config.use_exif:
tags = tags + get_tags(exif, allowed_exif)
if tagging_config.use_xmp:
tags = tags + get_tags(xmp, allowed_xmp)
add_tags(context, tags_to_add=tags)
def title_to_tag(context, event):
"""
Find keywords from the title of a content object. According to the configuration keywords may be added only, if they
already exist, or new keywords may be generated from the title.
:param context: The content object
:return: Nothing
"""
# get the tagging configuration
tagging_config = get_tagging_config()
# Check if the title has to used at all. If not do nothing
if tagging_config.scan_title or tagging_config.new_tags_from_title:
# get the title
title = context.title
# check if the title should be scanned and if a regex for scanning is provided
if tagging_config.scan_title and tagging_config.scan_title_regex:
# do the scanning
title_tags = tagging_config.scan_title_regex_compiled.findall(title)
# get a list a already existing keyowrds. TODO Optimization (caching, lower case matching, use sets or dicts)
existing_keywords = get_all_keywords(context)
# match the keywords to the exiting ones
for tag in title_tags:
if tag in existing_keywords:
# add the matching keywords
add_tags(context, tags_to_add=[tag])
# check if the title should be scanned for new keywords and if a regex for the scanning is provided
if tagging_config.new_tags_from_title and tagging_config.new_tags_from_title_regex:
# do the scanning
new_title_tags = tagging_config.new_tags_from_title_regex_compiled.findall(title)
# TODO Optimization (caching, lower case matching, use sets or dicts)
# add the keywords
add_tags(context, tags_to_add=new_title_tags)
