mirror of
https://github.com/Findus23/PaperLibrary-cli.git
synced 2024-09-20 17:03:46 +02:00
133 lines
4.2 KiB
Python
133 lines
4.2 KiB
Python
import hashlib
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import os
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import shutil
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from datetime import datetime
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from pathlib import Path
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from alive_progress import alive_bar
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from tzlocal import get_localzone
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from paperlibrary.api import PaperLibraryAPI
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from paperlibrary.api.models import Paper
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from paperlibrary.config import Config
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def format_filename(s: str) -> str:
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invalid_chars = {"/"}
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filename = ''.join(c for c in s if c not in invalid_chars)
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# filename = filename.replace(' ', '_') # I don't like spaces in filenames.
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if not filename:
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raise ValueError("empty filename")
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return filename
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def link_file(pdf_dir: Path, directory: Path, paper: Paper, filename: str = None) -> None:
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if not paper.main_pdf:
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return
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if filename is None:
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filename = paper.title
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sourcefile = pdf_dir / f"{paper.main_pdf.id}.pdf"
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targetfile = directory / "{}.pdf".format(format_filename(filename))
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targetfile.symlink_to(sourcefile)
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def write_symlinks(api: PaperLibraryAPI, config: Config):
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basedir = config.basedir_path
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pdf_dir = basedir / "pdfs"
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pdf_dir.mkdir(exist_ok=True)
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author_dir = basedir / "by_author"
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keyword_dir = basedir / "by_keyword"
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year_dir = basedir / "by_year"
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title_dir = basedir / "by_title"
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custom_title_dir = basedir / "by_custom_title"
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citation_key_dir = basedir / "by_citation_key"
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for directory in [author_dir, keyword_dir, year_dir, title_dir, custom_title_dir, citation_key_dir]:
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shutil.rmtree(directory, ignore_errors=True)
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directory.mkdir()
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for author in api.fetch_authors():
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if not author.papers:
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continue
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author_subdir = author_dir / format_filename(author.display_name)
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author_subdir.mkdir()
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for paper in author.papers:
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link_file(pdf_dir, author_subdir, paper)
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for keyword in api.fetch_keywords():
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if not keyword.papers:
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continue
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keyword_subdir = keyword_dir / format_filename(keyword.name)
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keyword_subdir.mkdir()
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for paper in keyword.papers:
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link_file(pdf_dir, keyword_subdir, paper)
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for paper in api.fetch_papers():
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link_file(pdf_dir, title_dir, paper, paper.title)
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if not paper.custom_title:
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continue
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link_file(pdf_dir, custom_title_dir, paper, paper.custom_title)
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if not paper.custom_title:
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continue
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link_file(pdf_dir, citation_key_dir, paper, paper.citation_key)
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for year, papers in api.fetch_papers_by_year().items():
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year_subdir = year_dir / str(year)
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year_subdir.mkdir()
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for paper in papers:
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link_file(pdf_dir, year_subdir, paper)
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def download_file(api: PaperLibraryAPI, url: str, target_file: Path):
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r = api.s.get(url)
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r.raise_for_status()
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with alive_bar(int(r.headers["Content-Length"])) as bar:
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with target_file.open("wb") as f:
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for chunk in r.iter_content(1024):
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for _ in range(1024):
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bar()
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f.write(chunk)
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def hash_file(file: Path, buffer_size=65536) -> str:
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sha256 = hashlib.sha256()
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with file.open("rb") as f:
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while True:
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data = f.read(buffer_size)
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if not data:
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break
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sha256.update(data)
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return sha256.hexdigest()
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def update_pdfs(api: PaperLibraryAPI, config: Config):
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pdf_dir = config.basedir_path / "pdfs"
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pdf_dir.mkdir(exist_ok=True)
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for pdf in api.fetch_pdfs():
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pdf_file = pdf_dir / f"{pdf.id}.pdf"
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if not pdf_file.exists():
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download_file(api, pdf.file, pdf_file)
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continue
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if hash_file(pdf_file) != pdf.sha256:
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modification_date = datetime.fromtimestamp(
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os.path.getmtime(pdf_file),
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get_localzone()
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)
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if modification_date > pdf.updated_at:
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print("local file is newer")
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api.upload_pdf(pdf, pdf_file)
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else:
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print("remote file is newer")
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download_file(api, pdf.file, pdf_file)
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def write_bibliography(api: PaperLibraryAPI, config: Config):
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bib = api.fetch_bibliography()
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target_file = config.basedir_path / "bibliography.bib"
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with target_file.open("w") as f:
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f.write(bib)
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