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from pathlib import Path
import httpx
import pymupdf # type: ignore
# where to save / load data
DATA_DIR = Path.cwd() / "data"
# URLs of the raw PDFs to download
RAW_PDF_URLS = [
"https://www.ebooksgratuits.com/ebooksfrance/moliere-oeuvres_completes_1.pdf",
"https://www.ebooksgratuits.com/ebooksfrance/moliere-oeuvres_completes_2.pdf",
]
def download_pdf(url: str, output_path: str) -> None:
"""Download a PDF from the given URL and save it to the specified output path."""
with httpx.stream("GET", url, follow_redirects=True) as response:
response.raise_for_status() # ensure we got a 200 OK
with open(output_path, "wb") as f:
for chunk in response.iter_bytes():
f.write(chunk)
def detect_toc(doc: pymupdf.Document) -> tuple[int, int]:
"""Detect the table of contents in the first quarter of the document.
Args:
doc: A pymupdf Document object representing the PDF document.
Returns:
A tuple containing the start and end page indices of the TOC.
If no TOC is found, returns (-1, -1).
"""
start = -1
end = -1
i = 0
for page in doc[: len(doc) // 4]:
if page.get_links():
start = i
break
i += 1
if start == -1:
print("No table of contents found in the first quarter of the document.")
return -1, -1 # no TOC found
for page in doc[start : len(doc) // 4]:
if not page.get_links():
end = i
break
i += 1
if end == -1:
end = len(doc) // 4
print(f"Table of contents detected from page {start} to {end}.")
return start, end
def main():
# make sure data directory exists
DATA_DIR.mkdir(parents=True, exist_ok=True)
# download raw PDFs if they don't already exist
paths = []
for url in RAW_PDF_URLS:
filename = url.split("/")[-1]
output_path = DATA_DIR / filename
paths.append(output_path)
if not output_path.exists():
print(f"Downloading {filename}...")
download_pdf(url, output_path)
else:
print(f"{filename} already exists, skipping download.")
# overwrite tinymoliere.txt if it exists
if (DATA_DIR / "tinymoliere.txt").exists():
(DATA_DIR / "tinymoliere.txt").unlink()
# process each PDF and write into a .txt file
for path in paths:
with open(path, "rb") as f:
doc = pymupdf.open(f)
# detect toc in first quarter of the document
_, toc_end = detect_toc(doc)
# compute a clip to remove headers / footers on every pages
rect = doc[0].bound()
new_rect = pymupdf.Rect(
rect.x0, rect.y0 + 60, rect.x1, rect.y1 - 60
)
# we ignore the last page
for page in doc[toc_end:-1]:
page_text = page.get_text(clip=new_rect)
with open(DATA_DIR / "tinymoliere.txt", "a") as f:
f.write(page_text)
if __name__ == "__main__":
main()
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