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import sys
import csv
import datetime
from typing import Iterable, Optional, Dict, Any, List
from collections import Counter
from dataclasses import dataclass, field
import ftfy
from chocula.util import clean_str, clean_issn, merge_spans
from chocula.config import ChoculaConfig
from chocula.database import DirectoryInfo, IssnDatabase, HomepageUrl
# Portico files have weirdly large field sizes
csv.field_size_limit(1310720)
THIS_YEAR = datetime.date.today().year
class DirectoryLoader():
source_slug: str = "GENERIC"
def __init__(self, config: ChoculaConfig):
self.config = config
def open_file(self) -> Iterable:
raise NotImplementedError()
def parse_record(self, record) -> Optional[DirectoryInfo]:
raise NotImplementedError()
def index_file(self, db) -> Counter:
print(f"##### Loading {self.source_slug}...", file=sys.stderr)
counts: Counter = Counter()
cur = db.db.cursor()
for record in self.open_file():
counts['total'] += 1
info = self.parse_record(record)
if info:
status = db.insert_directory(info, cur=cur)
counts[status] += 1
cur.close()
db.db.commit()
return counts
@dataclass
class KbartRecord:
issnl: Optional[str]
issne: Optional[str]
issnp: Optional[str]
title: Optional[str]
publisher: Optional[str]
start_year: Optional[int]
end_year: Optional[int]
start_volume: Optional[str]
end_volume: Optional[str]
url: Optional[HomepageUrl]
embargo: Optional[str]
year_spans: List[Any]
class KbartLoader():
source_slug: str = "GENERIC"
def __init__(self, config: ChoculaConfig):
self.config = config
def file_path(self) -> str:
#return self.config.TEMPLATE.filepath)
raise NotImplementedError()
def open_file(self) -> Iterable:
raw_file = open(self.file_path(), 'rb').read().decode(errors='replace')
fixed_file = ftfy.fix_text(raw_file)
reader = csv.DictReader(fixed_file.split('\n'), delimiter='\t')
return reader
def parse_record(self, row: dict, issn_db: IssnDatabase) -> Optional[KbartRecord]:
issne: Optional[str] = clean_issn(row['online_identifier'] or "")
issnp: Optional[str] = clean_issn(row['print_identifier'] or "")
issnl: Optional[str] = None
if issne:
issnl = issn_db.issn2issnl(issne)
if issnp and not issnl:
issnl = issn_db.issn2issnl(issnp)
start_year: Optional[int] = None
end_year: Optional[int] = None
if row['date_first_issue_online']:
start_year = int(row['date_first_issue_online'][:4])
if row['date_last_issue_online']:
end_year = int(row['date_last_issue_online'][:4])
end_volume = row['num_last_vol_online']
# hack to handle open-ended preservation
if end_year is None and end_volume and '(present)' in end_volume:
end_year = THIS_YEAR
record = KbartRecord(
issnl=issnl,
issnp=issnp,
issne=issne,
title=clean_str(row['publication_title']),
publisher=clean_str(row['publisher_name']),
url=HomepageUrl.from_url(row['title_url']),
embargo=clean_str(row['embargo_info']),
start_year=start_year,
end_year=end_year,
start_volume=clean_str(row['num_first_vol_online']),
end_volume=clean_str(row['num_last_vol_online']),
year_spans=[],
)
if record.start_volume == 'null':
record.start_volume = None
if record.end_volume == 'null':
record.end_volume = None
return record
def index_file(self, db) -> Counter:
"""
Transforms a KBART file into a dict of dicts; but basically a list of
JSON objects, one per journal. KBART files can have multiple rows per
journal (eg, different year spans), which is why this pass is needed.
"""
print(f"##### Loading {self.source_slug} KBART...", file=sys.stderr)
counts: Counter = Counter()
kbart_dict: Dict[str, KbartRecord] = dict()
for row in self.open_file():
counts['total'] += 1
record = self.parse_record(row, db.issn_db)
if record is None:
counts['skip-parse'] += 1
continue
elif not record.issnl:
counts['skip-issnl'] += 1
continue
elif record.start_year is None or record.end_year is None:
counts['partial-missing-years'] += 1
counts['parsed'] += 1
existing = kbart_dict.get(record.issnl, record)
if record.start_year and record.end_year:
old_spans = existing.year_spans or []
if not record.start_year <= record.end_year:
new_spans = [[record.end_year, record.start_year]]
else:
new_spans = [[record.start_year, record.end_year]]
record.year_spans = merge_spans(old_spans, new_spans)
kbart_dict[record.issnl] = record
counts['unique-issnl'] = len(kbart_dict)
cur = db.db.cursor()
for issnl, record in kbart_dict.items():
info = DirectoryInfo(
directory_slug=self.source_slug,
issnl=record.issnl,
issne=record.issne,
issnp=record.issnp,
name=record.title,
publisher=record.publisher,
homepage_urls=[],
extra=dict(year_spans=record.year_spans),
)
if record.url:
info.homepage_urls.append(record.url)
status = db.insert_directory(info, cur=cur)
counts[status] += 1
cur.close()
db.db.commit()
return counts
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