mirror of
https://github.com/github/awesome-copilot.git
synced 2026-03-21 00:25:13 +00:00
fix: handle large presentations with external assets mode (#1090)
This commit is contained in:
Andrea Liliana Griffiths
committed by
GitHub
GitHub
parent
e4fc57f204
commit
07e1e665d6
@@ -1,13 +1,13 @@
|
||||
#!/usr/bin/env python3
|
||||
"""Convert a PDF to a self-contained HTML presentation.
|
||||
"""Convert a PDF to an HTML presentation.
|
||||
|
||||
Each page is rendered as a PNG image (via pdftoppm) and base64-embedded
|
||||
into a single HTML file with slide navigation (arrows, swipe, click).
|
||||
Each page is rendered as a PNG image (via pdftoppm). Supports external assets
|
||||
mode for large files to avoid huge single-file HTML.
|
||||
|
||||
Requirements: poppler-utils (pdftoppm)
|
||||
Usage: python3 convert-pdf.py input.pdf [output.html]
|
||||
"""
|
||||
|
||||
import argparse
|
||||
import base64
|
||||
import glob
|
||||
import os
|
||||
@@ -17,19 +17,50 @@ import tempfile
|
||||
from pathlib import Path
|
||||
|
||||
|
||||
def convert(pdf_path: str, output_path: str | None = None, dpi: int = 150):
|
||||
def get_page_count(pdf_path):
|
||||
"""Get page count using pdfinfo if available."""
|
||||
try:
|
||||
result = subprocess.run(["pdfinfo", pdf_path], capture_output=True, text=True)
|
||||
for line in result.stdout.splitlines():
|
||||
if line.startswith("Pages:"):
|
||||
return int(line.split(":")[1].strip())
|
||||
except:
|
||||
pass
|
||||
return None
|
||||
|
||||
|
||||
def convert(pdf_path: str, output_path: str | None = None, dpi: int = 150, external_assets=None):
|
||||
pdf_path = str(Path(pdf_path).resolve())
|
||||
if not Path(pdf_path).exists():
|
||||
print(f"Error: {pdf_path} not found")
|
||||
sys.exit(1)
|
||||
|
||||
# Check for pdftoppm
|
||||
if subprocess.run(["which", "pdftoppm"], capture_output=True).returncode != 0:
|
||||
print("Error: pdftoppm not found. Install poppler-utils:")
|
||||
print(" apt install poppler-utils # Debian/Ubuntu")
|
||||
print(" brew install poppler # macOS")
|
||||
sys.exit(1)
|
||||
|
||||
file_size_mb = os.path.getsize(pdf_path) / (1024 * 1024)
|
||||
|
||||
if file_size_mb > 150:
|
||||
print(f"WARNING: PDF is {file_size_mb:.0f}MB — conversion may be slow and memory-intensive.")
|
||||
|
||||
page_count = get_page_count(pdf_path)
|
||||
|
||||
# Auto-detect external assets mode
|
||||
if external_assets is None:
|
||||
external_assets = file_size_mb > 20 or (page_count is not None and page_count > 50)
|
||||
if external_assets:
|
||||
print(f"Auto-enabling external assets mode (file: {file_size_mb:.1f}MB, pages: {page_count or 'unknown'})")
|
||||
|
||||
output = output_path or str(Path(pdf_path).with_suffix('.html'))
|
||||
output_dir = Path(output).parent
|
||||
|
||||
if external_assets:
|
||||
assets_dir = output_dir / "assets"
|
||||
assets_dir.mkdir(parents=True, exist_ok=True)
|
||||
|
||||
with tempfile.TemporaryDirectory() as tmpdir:
|
||||
prefix = os.path.join(tmpdir, "page")
|
||||
result = subprocess.run(
|
||||
@@ -48,15 +79,23 @@ def convert(pdf_path: str, output_path: str | None = None, dpi: int = 150):
|
||||
slides_html = []
|
||||
for i, page_path in enumerate(pages, 1):
|
||||
with open(page_path, "rb") as f:
|
||||
b64 = base64.b64encode(f.read()).decode()
|
||||
page_bytes = f.read()
|
||||
|
||||
if external_assets:
|
||||
img_name = f"img-{i:03d}.png"
|
||||
(assets_dir / img_name).write_bytes(page_bytes)
|
||||
src = f"assets/{img_name}"
|
||||
else:
|
||||
b64 = base64.b64encode(page_bytes).decode()
|
||||
src = f"data:image/png;base64,{b64}"
|
||||
|
||||
slides_html.append(
|
||||
f'<section class="slide">'
|
||||
f'<div class="slide-inner">'
|
||||
f'<img src="data:image/png;base64,{b64}" alt="Page {i}">'
|
||||
f'<img src="{src}" alt="Page {i}">'
|
||||
f'</div></section>'
|
||||
)
|
||||
|
||||
# Try to extract title from filename
|
||||
title = Path(pdf_path).stem.replace("-", " ").replace("_", " ")
|
||||
|
||||
html = f'''<!DOCTYPE html>
|
||||
@@ -108,14 +147,30 @@ show(0);
|
||||
</script>
|
||||
</body></html>'''
|
||||
|
||||
output = output_path or str(Path(pdf_path).with_suffix('.html'))
|
||||
Path(output).write_text(html, encoding='utf-8')
|
||||
output_size = os.path.getsize(output)
|
||||
|
||||
print(f"Converted to: {output}")
|
||||
print(f"Pages: {len(slides_html)}")
|
||||
print(f"Output size: {output_size / (1024*1024):.1f}MB")
|
||||
print(f"External assets: {'yes' if external_assets else 'no'}")
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
if len(sys.argv) < 2:
|
||||
print("Usage: convert-pdf.py <file.pdf> [output.html]")
|
||||
sys.exit(1)
|
||||
convert(sys.argv[1], sys.argv[2] if len(sys.argv) > 2 else None)
|
||||
parser = argparse.ArgumentParser(description="Convert PDF to HTML presentation")
|
||||
parser.add_argument("input", help="Path to .pdf file")
|
||||
parser.add_argument("output", nargs="?", help="Output HTML path (default: same name with .html)")
|
||||
parser.add_argument("--external-assets", action="store_true", default=None,
|
||||
help="Save page images as separate files in assets/ directory (auto-detected for large files)")
|
||||
parser.add_argument("--no-external-assets", action="store_true",
|
||||
help="Force inline base64 even for large files")
|
||||
parser.add_argument("--dpi", type=int, default=150, help="Render DPI (default: 150)")
|
||||
args = parser.parse_args()
|
||||
|
||||
ext_assets = None
|
||||
if args.external_assets:
|
||||
ext_assets = True
|
||||
elif args.no_external_assets:
|
||||
ext_assets = False
|
||||
|
||||
convert(args.input, args.output, dpi=args.dpi, external_assets=ext_assets)
|
||||
|
||||
Reference in New Issue
Block a user