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92fd11a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 | """
PDF text extraction for user-uploaded datasheets.
Uses PyMuPDF (fitz) for robust PDF parsing.
"""
from __future__ import annotations
import logging
from pathlib import Path
logger = logging.getLogger(__name__)
def extract_text_from_pdf(file_path: str | Path) -> str:
"""
Extract all text from a PDF file.
Returns concatenated text from all pages.
"""
try:
import fitz # PyMuPDF
except ImportError:
logger.error("PyMuPDF not installed. Run: pip install pymupdf")
return ""
try:
doc = fitz.open(str(file_path))
pages_text = []
for page_num, page in enumerate(doc):
text = page.get_text()
if text.strip():
pages_text.append(f"--- Page {page_num + 1} ---\n{text}")
doc.close()
full_text = "\n".join(pages_text)
logger.info(
"Extracted %d chars from %d pages of %s",
len(full_text), len(pages_text), file_path,
)
return full_text
except Exception as exc:
logger.error("PDF extraction failed for %s: %s", file_path, exc)
return ""
def extract_text_from_bytes(file_bytes: bytes, filename: str = "upload.pdf") -> str:
"""
Extract text from PDF bytes (for Gradio file upload handling).
"""
try:
import fitz
except ImportError:
logger.error("PyMuPDF not installed.")
return ""
try:
doc = fitz.open(stream=file_bytes, filetype="pdf")
pages_text = []
for page_num, page in enumerate(doc):
text = page.get_text()
if text.strip():
pages_text.append(f"--- Page {page_num + 1} ---\n{text}")
doc.close()
full_text = "\n".join(pages_text)
logger.info(
"Extracted %d chars from %d pages of %s",
len(full_text), len(pages_text), filename,
)
return full_text
except Exception as exc:
logger.error("PDF bytes extraction failed: %s", exc)
return ""
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