405 lines
13 KiB
Python
405 lines
13 KiB
Python
#!/usr/bin/env python3
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from __future__ import annotations
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import argparse
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import zipfile
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from pathlib import Path
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from typing import Any, Optional
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from _pptx_common import (
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OOXML_PRESENTATION_SUFFIXES,
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SkillArgumentParser,
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input_file,
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inspect_archive,
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parse_xml_bytes,
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run_cli,
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)
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EMU_PER_INCH = 914400
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def build_parser() -> argparse.ArgumentParser:
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parser = SkillArgumentParser(description="分段检查演示文稿的结构、文本和媒体。")
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parser.add_argument("--input", required=True)
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parser.add_argument("--start-slide", type=int, default=1)
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parser.add_argument("--max-slides", type=int, default=30)
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parser.add_argument("--max-shapes", type=int, default=200)
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parser.add_argument("--max-table-cells", type=int, default=500)
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parser.add_argument("--max-chars", type=int, default=100000)
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parser.add_argument("--include-runs", action="store_true")
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return parser
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def _inches(value: Any) -> Optional[float]:
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try:
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return round(int(value) / EMU_PER_INCH, 4)
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except (TypeError, ValueError):
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return None
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def _iter_shapes(shapes: Any):
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from pptx.enum.shapes import MSO_SHAPE_TYPE
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for shape in shapes:
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yield shape
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if shape.shape_type == MSO_SHAPE_TYPE.GROUP:
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yield from _iter_shapes(shape.shapes)
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def _shape_text_char_count(shape: Any) -> int:
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texts: list[str] = []
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if getattr(shape, "has_text_frame", False):
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texts.append(shape.text_frame.text)
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if getattr(shape, "has_table", False):
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for row in shape.table.rows:
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texts.extend(cell.text for cell in row.cells)
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return sum(
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1
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for text in texts
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for character in text
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if character.isalnum()
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)
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def _contains_picture(shape: Any) -> bool:
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from pptx.enum.shapes import MSO_SHAPE_TYPE
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if shape.shape_type == MSO_SHAPE_TYPE.PICTURE:
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return True
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if shape.shape_type == MSO_SHAPE_TYPE.GROUP:
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return any(_contains_picture(child) for child in shape.shapes)
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return False
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def _slide_media_profile(
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slide: Any,
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slide_width: int,
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slide_height: int,
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) -> dict[str, Any]:
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from pptx.enum.shapes import MSO_SHAPE_TYPE
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shapes = list(_iter_shapes(slide.shapes))
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image_count = sum(
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1 for shape in shapes
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if shape.shape_type == MSO_SHAPE_TYPE.PICTURE
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)
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chart_count = sum(
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1 for shape in shapes
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if getattr(shape, "has_chart", False)
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)
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native_text_char_count = sum(
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_shape_text_char_count(shape) for shape in shapes
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)
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image_area = 0.0
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slide_area = slide_width * slide_height
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if slide_area > 0:
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for shape in slide.shapes:
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if not _contains_picture(shape):
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continue
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try:
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raw_left = int(shape.left)
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raw_top = int(shape.top)
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left = max(0, raw_left)
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top = max(0, raw_top)
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right = min(slide_width, raw_left + int(shape.width))
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bottom = min(slide_height, raw_top + int(shape.height))
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except (AttributeError, TypeError, ValueError):
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continue
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if right > left and bottom > top:
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image_area += (right - left) * (bottom - top) / slide_area
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return {
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"image_count": image_count,
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"chart_count": chart_count,
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"image_area_ratio": round(min(1.0, image_area), 4),
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"native_text_char_count": native_text_char_count,
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"has_images": image_count > 0,
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}
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def _run_payload(run: Any) -> dict[str, Any]:
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font = run.font
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hyperlink = None
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try:
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hyperlink = run.hyperlink.address
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except (AttributeError, KeyError, ValueError):
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pass
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return {
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"text": run.text,
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"bold": font.bold,
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"italic": font.italic,
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"underline": font.underline,
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"font_name": font.name,
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"font_size_pt": round(font.size.pt, 2) if font.size is not None else None,
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"hyperlink": hyperlink,
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}
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def _paragraph_payload(paragraph: Any, *, include_runs: bool) -> dict[str, Any]:
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payload: dict[str, Any] = {
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"text": paragraph.text,
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"level": paragraph.level,
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"alignment": str(paragraph.alignment) if paragraph.alignment else None,
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}
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if include_runs:
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payload["runs"] = [_run_payload(run) for run in paragraph.runs]
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return payload
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def _text_frame_payload(text_frame: Any, *, include_runs: bool) -> dict[str, Any]:
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return {
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"text": text_frame.text,
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"paragraphs": [
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_paragraph_payload(paragraph, include_runs=include_runs)
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for paragraph in text_frame.paragraphs
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],
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}
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def _chart_payload(shape: Any, *, max_points: int = 100) -> dict[str, Any]:
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chart = shape.chart
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series_payload: list[dict[str, Any]] = []
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for series in list(chart.series)[:50]:
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values: list[Any] = []
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try:
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values = list(series.values)[:max_points]
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except (AttributeError, TypeError, ValueError):
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pass
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series_payload.append(
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{
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"name": getattr(series, "name", None),
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"point_count": len(values),
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"values": values,
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}
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)
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categories: list[str] = []
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try:
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categories = [str(item.label) for item in chart.plots[0].categories][:max_points]
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except (AttributeError, IndexError, TypeError, ValueError):
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pass
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return {
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"chart_type": str(chart.chart_type),
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"has_title": chart.has_title,
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"series": series_payload,
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"categories": categories,
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}
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def _shape_payload(
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shape: Any,
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*,
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include_runs: bool,
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max_table_cells: int,
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) -> dict[str, Any]:
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payload: dict[str, Any] = {
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"name": shape.name,
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"shape_type": str(shape.shape_type),
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"x": _inches(shape.left),
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"y": _inches(shape.top),
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"w": _inches(shape.width),
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"h": _inches(shape.height),
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}
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if getattr(shape, "has_text_frame", False):
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payload["text_frame"] = _text_frame_payload(
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shape.text_frame,
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include_runs=include_runs,
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)
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if getattr(shape, "has_table", False):
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rows: list[list[str]] = []
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cell_count = 0
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truncated = False
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for row in shape.table.rows:
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values: list[str] = []
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for cell in row.cells:
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if cell_count >= max_table_cells:
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truncated = True
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break
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values.append(cell.text)
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cell_count += 1
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if values:
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rows.append(values)
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if truncated:
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break
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payload["table"] = {
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"row_count": len(shape.table.rows),
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"column_count": len(shape.table.columns),
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"rows": rows,
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"truncated": truncated,
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}
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if getattr(shape, "has_chart", False):
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payload["chart"] = _chart_payload(shape)
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if shape.shape_type == 13:
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try:
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payload["image"] = {
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"content_type": shape.image.content_type,
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"filename": shape.image.filename,
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"size_bytes": len(shape.image.blob),
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}
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except (AttributeError, KeyError, ValueError):
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payload["image"] = {"readable": False}
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return payload
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def _slide_notes(slide: Any) -> str:
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try:
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text_frame = slide.notes_slide.notes_text_frame
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return text_frame.text if text_frame is not None else ""
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except (AttributeError, KeyError, ValueError):
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return ""
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def _comment_summary(path: Path) -> dict[str, Any]:
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comment_parts: list[str] = []
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authors: set[str] = set()
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with zipfile.ZipFile(path) as archive:
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for name in archive.namelist():
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if name.startswith("ppt/comments/comment") and name.endswith(".xml"):
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comment_parts.append(name)
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if name in {
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"ppt/commentAuthors.xml",
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"ppt/authors.xml",
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}:
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root = parse_xml_bytes(archive.read(name), label=name)
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for node in root.iter():
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author = node.attrib.get("name")
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if author:
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authors.add(author)
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return {
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"part_count": len(comment_parts),
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"authors": sorted(authors),
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}
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def _external_relationships(path: Path) -> list[dict[str, str]]:
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relationships: list[dict[str, str]] = []
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with zipfile.ZipFile(path) as archive:
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for name in archive.namelist():
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if not name.endswith(".rels"):
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continue
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root = parse_xml_bytes(archive.read(name), label=name)
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for node in root:
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if node.attrib.get("TargetMode") != "External":
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continue
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relationships.append(
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{
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"part": name,
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"type": node.attrib.get("Type", ""),
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"target": node.attrib.get("Target", ""),
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}
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)
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return relationships[:200]
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def main() -> dict[str, Any]:
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from pptx import Presentation
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args = build_parser().parse_args()
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if args.start_slide < 1:
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raise ValueError("start-slide 必须大于 0")
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if args.max_slides < 1 or args.max_slides > 100:
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raise ValueError("max-slides 必须在 1 到 100 之间")
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if args.max_shapes < 1 or args.max_shapes > 1000:
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raise ValueError("max-shapes 必须在 1 到 1000 之间")
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if args.max_table_cells < 1 or args.max_table_cells > 10000:
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raise ValueError("max-table-cells 必须在 1 到 10000 之间")
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if args.max_chars < 1000 or args.max_chars > 1_000_000:
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raise ValueError("max-chars 必须在 1000 到 1000000 之间")
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source = input_file(args.input, OOXML_PRESENTATION_SUFFIXES)
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archive = inspect_archive(source)
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if archive["missing_required_parts"]:
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raise ValueError(
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"演示文稿缺少必要部件："
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+ "、".join(archive["missing_required_parts"])
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)
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presentation = Presentation(str(source))
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slide_count = len(presentation.slides)
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if args.start_slide > slide_count and slide_count > 0:
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raise ValueError(f"start-slide 超出页面总数 {slide_count}")
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end_slide = min(slide_count, args.start_slide + args.max_slides - 1)
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payload_slides: list[dict[str, Any]] = []
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char_count = 0
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truncated_by_chars = False
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for slide_number in range(args.start_slide, end_slide + 1):
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slide = presentation.slides[slide_number - 1]
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title = slide.shapes.title.text if slide.shapes.title is not None else ""
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media_profile = _slide_media_profile(
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slide,
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int(presentation.slide_width),
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int(presentation.slide_height),
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)
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shapes: list[dict[str, Any]] = []
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for shape in list(slide.shapes)[: args.max_shapes]:
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item = _shape_payload(
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shape,
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include_runs=args.include_runs,
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max_table_cells=args.max_table_cells,
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)
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item_chars = len(str(item))
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if char_count + item_chars > args.max_chars:
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truncated_by_chars = True
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break
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shapes.append(item)
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char_count += item_chars
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notes = _slide_notes(slide)
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if char_count + len(notes) > args.max_chars:
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notes = notes[: max(0, args.max_chars - char_count)]
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truncated_by_chars = True
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char_count += len(notes)
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payload_slides.append(
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{
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"number": slide_number,
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"title": title,
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"layout": getattr(slide.slide_layout, "name", None),
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"shape_count": len(slide.shapes),
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"shapes_truncated": len(slide.shapes) > args.max_shapes,
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"shapes": shapes,
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"speaker_notes": notes,
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"media": media_profile,
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}
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)
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if truncated_by_chars:
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break
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last_slide = payload_slides[-1]["number"] if payload_slides else args.start_slide - 1
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next_slide = last_slide + 1 if last_slide < slide_count else None
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properties = presentation.core_properties
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return {
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"source": str(source),
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"slide_count": slide_count,
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"slide_size": {
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"width_inches": _inches(presentation.slide_width),
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"height_inches": _inches(presentation.slide_height),
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},
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"properties": {
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"title": properties.title,
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"subject": properties.subject,
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"author": properties.author,
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"keywords": properties.keywords,
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"comments": properties.comments,
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"last_modified_by": properties.last_modified_by,
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},
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"selection": {
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"start_slide": args.start_slide,
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"end_slide": last_slide,
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"has_more": next_slide is not None,
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"next_slide": next_slide,
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"truncated_by_chars": truncated_by_chars,
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},
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"slides": payload_slides,
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"image_slides": [
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slide["number"]
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for slide in payload_slides
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if slide["media"]["has_images"]
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],
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"comments": _comment_summary(source),
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"external_relationships": _external_relationships(source),
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"archive": archive,
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}
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if __name__ == "__main__":
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raise SystemExit(run_cli(main))
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