Spaces:
Sleeping
Sleeping
File size: 4,029 Bytes
7687049 | 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 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 | """DOCX -> PDF conversion (no Aspose).
Obiettivo: ottenere un PDF *fedele* al template Word (grafica, tabelle, immagini, header/footer).
Scelta converter:
1) LibreOffice headless (consigliato su Linux / HF Spaces) ✅ alta fedeltà
2) docx2pdf (solo Windows/macOS con MS Word)
3) fallback PyMuPDF (bassa fedeltà: solo come ultima spiaggia)
Su HuggingFace Spaces puoi installare LibreOffice con `packages.txt`:
- libreoffice
- libreoffice-writer
- fonts-dejavu-core (o altri font richiesti dal template)
Questo non richiede Aspose.
"""
from __future__ import annotations
import shutil
import subprocess
from dataclasses import dataclass
from pathlib import Path
from typing import Optional
import fitz # PyMuPDF
@dataclass
class PdfConvertResult:
backend: str
removed_blank_pages: int = 0
def _loffice_available() -> Optional[str]:
return shutil.which("soffice") or shutil.which("libreoffice")
def _convert_with_libreoffice(docx_path: Path, pdf_path: Path) -> None:
"""Convert using LibreOffice headless."""
docx_path = Path(docx_path)
pdf_path = Path(pdf_path)
outdir = pdf_path.parent
outdir.mkdir(parents=True, exist_ok=True)
cmd = [
_loffice_available(),
"--headless",
"--nologo",
"--nofirststartwizard",
"--convert-to",
"pdf",
"--outdir",
str(outdir),
str(docx_path),
]
# Run
subprocess.run(cmd, check=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
produced = outdir / (docx_path.stem + ".pdf")
if not produced.exists():
# LibreOffice sometimes produces .PDF
produced = outdir / (docx_path.stem + ".PDF")
if not produced.exists():
raise RuntimeError("LibreOffice non ha prodotto il PDF atteso.")
if produced != pdf_path:
produced.replace(pdf_path)
def _convert_with_docx2pdf(docx_path: Path, pdf_path: Path) -> None:
from docx2pdf import convert # type: ignore
pdf_path.parent.mkdir(parents=True, exist_ok=True)
convert(str(docx_path), str(pdf_path))
def _convert_with_pymupdf(docx_path: Path, pdf_path: Path) -> None:
doc = fitz.open(str(docx_path))
pdf_bytes = doc.convert_to_pdf()
pdf = fitz.open("pdf", pdf_bytes)
pdf.save(str(pdf_path))
pdf.close()
doc.close()
def _drop_blank_pages(pdf_path: Path) -> int:
"""Remove visually blank pages (rare, but can happen with complex templates)."""
pdf = fitz.open(str(pdf_path))
blanks = []
for i in range(pdf.page_count):
page = pdf.load_page(i)
pix = page.get_pixmap(matrix=fitz.Matrix(0.5, 0.5), alpha=False)
samples = pix.samples
nonwhite = 0
total = len(samples) // 3
for j in range(0, len(samples), 3):
if samples[j] < 245 or samples[j + 1] < 245 or samples[j + 2] < 245:
nonwhite += 1
if total and (nonwhite / total) < 0.002:
blanks.append(i)
for i in reversed(blanks):
pdf.delete_page(i)
removed = len(blanks)
if removed:
tmp = pdf_path.with_suffix(".tmp.pdf")
pdf.save(str(tmp))
pdf.close()
tmp.replace(pdf_path)
else:
pdf.close()
return removed
def docx_to_pdf(docx_path: Path, pdf_path: Path, *, drop_blank_pages: bool = True) -> PdfConvertResult:
docx_path = Path(docx_path)
pdf_path = Path(pdf_path)
backend = ""
if _loffice_available():
backend = "libreoffice"
_convert_with_libreoffice(docx_path, pdf_path)
else:
# docx2pdf works only with MS Word
try:
backend = "docx2pdf"
_convert_with_docx2pdf(docx_path, pdf_path)
except Exception:
backend = "pymupdf_fallback"
_convert_with_pymupdf(docx_path, pdf_path)
removed = 0
if drop_blank_pages:
try:
removed = _drop_blank_pages(pdf_path)
except Exception:
removed = 0
return PdfConvertResult(backend=backend, removed_blank_pages=removed)
|