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Merge branch 'ENH_filename_date_parsing' of https://github.com/jat255/paperless into jat255-ENH_filename_date_parsing

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Daniel Quinn
2018-12-01 16:57:16 +00:00
parent 7dbb77e57b 730daa3d6d
commit 650db75c2b
9 changed files with 198 additions and 41 deletions
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60
src/documents/parsers.py
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@@ -14,14 +14,18 @@ from django.utils import timezone
# - XX.YY.ZZZZ with XX + YY being 1 or 2 and ZZZZ being 2 or 4 digits
# - XX/YY/ZZZZ with XX + YY being 1 or 2 and ZZZZ being 2 or 4 digits
# - XX-YY-ZZZZ with XX + YY being 1 or 2 and ZZZZ being 2 or 4 digits
# - ZZZZ.XX.YY with XX + YY being 1 or 2 and ZZZZ being 2 or 4 digits
# - ZZZZ/XX/YY with XX + YY being 1 or 2 and ZZZZ being 2 or 4 digits
# - ZZZZ-XX-YY with XX + YY being 1 or 2 and ZZZZ being 2 or 4 digits
# - XX. MONTH ZZZZ with XX being 1 or 2 and ZZZZ being 2 or 4 digits
# - MONTH ZZZZ, with ZZZZ being 4 digits
# - MONTH XX, ZZZZ with XX being 1 or 2 and ZZZZ being 4 digits
DATE_REGEX = re.compile(
r'\b([0-9]{1,2})[\.\/-]([0-9]{1,2})[\.\/-]([0-9]{4}|[0-9]{2})\b|' +
r'\b([0-9]{1,2}[\. ]+[^ ]{3,9} ([0-9]{4}|[0-9]{2}))\b|' +
r'\b([^\W\d_]{3,9} [0-9]{1,2}, ([0-9]{4}))\b|' +
r'\b([^\W\d_]{3,9} [0-9]{4})\b'
r'(\b|(?!=([_-])))([0-9]{1,2})[\.\/-]([0-9]{1,2})[\.\/-]([0-9]{4}|[0-9]{2})(\b|(?=([_-])))|' +
r'(\b|(?!=([_-])))([0-9]{4}|[0-9]{2})[\.\/-]([0-9]{1,2})[\.\/-]([0-9]{1,2})(\b|(?=([_-])))|' +
r'(\b|(?!=([_-])))([0-9]{1,2}[\. ]+[^ ]{3,9} ([0-9]{4}|[0-9]{2}))(\b|(?=([_-])))|' +
r'(\b|(?!=([_-])))([^\W\d_]{3,9} [0-9]{1,2}, ([0-9]{4}))(\b|(?=([_-])))|' +
r'(\b|(?!=([_-])))([^\W\d_]{3,9} [0-9]{4})(\b|(?=([_-])))'
)
@@ -37,6 +41,7 @@ class DocumentParser:
SCRATCH = settings.SCRATCH_DIR
DATE_ORDER = settings.DATE_ORDER
FILENAME_DATE_ORDER = settings.FILENAME_DATE_ORDER
OPTIPNG = settings.OPTIPNG_BINARY
def __init__(self, path):
@@ -75,30 +80,53 @@ class DocumentParser:
Returns the date of the document.
"""
def __parser__(ds, date_order):
"""
Call dateparser.parse with a particular date ordering
"""
return dateparser.parse(ds,
settings={"DATE_ORDER": date_order,
"PREFER_DAY_OF_MONTH": "first",
"RETURN_AS_TIMEZONE_AWARE":
True})
date = None
date_string = None
next_year = timezone.now().year + 5 # Arbitrary 5 year future limit
title = os.path.basename(self.document_path)
# if filename date parsing is enabled, search there first:
if self.FILENAME_DATE_ORDER:
self.log("info", "Checking document title for date")
for m in re.finditer(DATE_REGEX, title):
date_string = m.group(0)
try:
date = __parser__(date_string, self.FILENAME_DATE_ORDER)
except TypeError:
# Skip all matches that do not parse to a proper date
continue
if date is not None and next_year > date.year > 1900:
self.log("info",
"Detected document date {} based on string {} "
"from document title"
"".format(date.isoformat(), date_string))
return date
try:
# getting text after checking filename will save time if only
# looking at the filename instead of the whole text
text = self.get_text()
except ParseError:
return None
next_year = timezone.now().year + 5 # Arbitrary 5 year future limit
# Iterate through all regex matches and try to parse the date
# Iterate through all regex matches in text and try to parse the date
for m in re.finditer(DATE_REGEX, text):
date_string = m.group(0)
try:
date = dateparser.parse(
date_string,
settings={
"DATE_ORDER": self.DATE_ORDER,
"PREFER_DAY_OF_MONTH": "first",
"RETURN_AS_TIMEZONE_AWARE": True
}
)
date = __parser__(date_string, self.DATE_ORDER)
except TypeError:
# Skip all matches that do not parse to a proper date
continue