| """ |
| paper2technical workflow |
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 生成时间: 2025-12-07 23:36:51 |
| |
| 1. 在 **TOOLS** 区域定义需要暴露给 Prompt 的前置工具 |
| 2. 在 **NODES** 区域实现异步节点函数 (await-able) |
| 3. 在 **EDGES** 区域声明有向边 |
| 4. 最后返回 builder.compile() 或 GenericGraphBuilder |
| """ |
|
|
| from __future__ import annotations |
| import json |
| import time |
| from pathlib import Path |
| import re |
|
|
| from dataflow_agent.state import Paper2FigureState |
| from dataflow_agent.graphbuilder.graph_builder import GenericGraphBuilder |
| from dataflow_agent.workflow.registry import register |
| from dataflow_agent.agentroles import create_graph_agent, create_react_agent, create_simple_agent |
| from dataflow_agent.toolkits.tool_manager import get_tool_manager |
| from dataflow_agent.toolkits.imtool.bg_tool import ( |
| local_tool_for_svg_render, |
| local_tool_for_raster_to_svg, |
| ) |
| from dataflow_agent.toolkits.imtool.mineru_tool import svg_to_emf |
| from dataflow_agent.utils import get_project_root |
| from dataflow_agent.logger import get_logger |
| log = get_logger(__name__) |
|
|
|
|
| def _ensure_result_path(state: Paper2FigureState) -> str: |
| """ |
| 统一本次 workflow 的根输出目录: |
| - 如果 state.result_path 已存在(通常由调用方传入,形如 时间戳+编码),直接使用; |
| - 否则:使用 get_project_root() / "outputs" / "paper2tec" / <timestamp>, |
| 并回写到 state.result_path,确保后续节点共享同一目录,避免数据串台。 |
| """ |
| raw = getattr(state, "result_path", None) |
| if raw: |
| return raw |
|
|
| root = get_project_root() |
| ts = int(time.time()) |
| base_dir = (root / "outputs" / "paper2tec" / str(ts)).resolve() |
| base_dir.mkdir(parents=True, exist_ok=True) |
| state.result_path = str(base_dir) |
| return state.result_path |
|
|
|
|
| @register("paper2technical") |
| def create_paper2technical_graph() -> GenericGraphBuilder: |
| """ |
| Workflow factory: dfa run --wf paper2technical |
| """ |
| |
| |
| builder = GenericGraphBuilder( |
| state_model=Paper2FigureState, |
| entry_point="_start_", |
| ) |
|
|
| |
| |
| |
| |
| @builder.pre_tool("paper_content", "paper_idea_extractor") |
| def _get_paper_content(state: Paper2FigureState): |
| """ |
| 前置工具: 读取论文 PDF 的标题和前若干页内容,供 paper_idea_extractor 节点使用。 |
| |
| - 作用: 为大模型提供足够的上下文,让其抽取论文中的技术路线/实验流程关键信息。 |
| - 输出: 一个字符串,包含论文标题 + 前若干页文本。 |
| """ |
| import fitz |
| import PyPDF2 |
|
|
| pdf_path = state.paper_file |
| if not pdf_path: |
| log.warning("paper_file 为空,无法读取 PDF 内容") |
| return "" |
|
|
| try: |
| with open(pdf_path, "rb") as f: |
| reader = PyPDF2.PdfReader(f) |
| paper_title = reader.metadata.get("/Title", "Unknown Title") |
| except Exception: |
| paper_title = "Unknown Title" |
|
|
| try: |
| doc = fitz.open(pdf_path) |
| except Exception as e: |
| log.error(f"打开 PDF 失败: {e}") |
| return f"The title of the paper is {paper_title}" |
|
|
| text_parts: list[str] = [] |
| |
| for page_idx in range(min(10, len(doc))): |
| page = doc.load_page(page_idx) |
| text_parts.append(page.get_text("text") or "") |
|
|
| content = "\n".join(text_parts).strip() |
| final_text = ( |
| f"The title of the paper is {paper_title}\n\n" |
| f"Here are the first 10 pages of the paper:\n{content}" |
| ) |
| log.info("paper_content 提取完成") |
| return final_text |
|
|
| @builder.pre_tool("paper_idea", "technical_route_desc_generator") |
| def _get_paper_idea(state: Paper2FigureState): |
| """ |
| 前置工具: 为 technical_route_desc_generator 节点暴露论文的核心想法摘要。 |
| |
| - 在 PDF 模式下,该摘要由 paper_idea_extractor 节点写入 state.paper_idea。 |
| - 在 TEXT 模式下,可以直接由调用方事先把概要写入 state.paper_idea。 |
| """ |
| return state.paper_idea or "" |
|
|
| @builder.pre_tool("style", "technical_route_desc_generator") |
| def _get_paper_idea(state: Paper2FigureState): |
|
|
| return state.request.style or "" |
|
|
| |
|
|
| |
| |
| |
| async def paper_idea_extractor_node(state: Paper2FigureState) -> Paper2FigureState: |
| """ |
| 节点 1: 从 PDF 中抽取论文的核心思想 / 技术路线相关信息 |
| |
| - 只在 input_type == "PDF" 时作为入口节点被调用。 |
| - 基于 pre_tool("paper_content") 提供的标题 + 前若干页内容, |
| 调用专门的 agent(例如 paper_idea_extractor)生成摘要。 |
| - 该摘要用于后续技术路线图描述生成。 |
| |
| 输入: |
| state.paper_file : 论文 PDF 路径 |
| 输出: |
| state.paper_idea : 论文核心思想 / 技术路线要点摘要 |
| state.agent_results["paper_idea_extractor"] : agent 原始输出 |
| """ |
| agent = create_simple_agent("paper_idea_extractor") |
| state = await agent.execute(state=state) |
| return state |
|
|
| def _svg_has_cjk(text: str) -> bool: |
| """简单判断 SVG 中是否包含中文字符,用于日志和调试。""" |
| return bool(re.search(r"[\u4e00-\u9fff]", text)) |
|
|
|
|
| def _inject_chinese_font(svg_code: str) -> str: |
| """ |
| 如果 SVG 中没有设定中文友好的 font-family,则注入一段全局样式, |
| 指定一组 CJK 字体作为优先字体。 |
| |
| 注意:字体名请根据实际安装的字体调整。 |
| """ |
| if "font-family" in svg_code: |
| return svg_code |
|
|
| idx = svg_code.find(">") |
| if idx == -1: |
| return svg_code |
|
|
| style_block = """ |
| <style type="text/css"> |
| text, tspan { |
| font-family: "Noto Sans CJK SC", "Microsoft YaHei", "SimHei", "SimSun", "WenQuanYi Zen Hei", sans-serif; |
| } |
| </style> |
| """ |
| return svg_code[: idx + 1] + style_block + svg_code[idx + 1 :] |
|
|
|
|
| async def technical_route_desc_generator_node(state: Paper2FigureState) -> Paper2FigureState: |
| """ |
| 节点 2: 技术路线图描述生成器 |
| |
| - 根据论文摘要(PDF 模式)或用户直接提供的文本描述(TEXT 模式), |
| 生成“技术路线/实验流程”的结构化自然语言描述或 JSON。 |
| - 典型内容包括: 各阶段实验步骤、模块之间的依赖关系、输入输出数据流等。 |
| |
| 输入: |
| - PDF 模式: state.paper_idea 由 paper_idea_extractor 填充 |
| - TEXT 模式: 可以事先把文本写入 state.paper_idea 或其他字段 |
| 输出: |
| - 建议: 在 agent 内把结果存到 state.fig_desc 或 state.agent_results["technical_route_desc_generator"] |
| """ |
| agent = create_react_agent( |
| name="technical_route_desc_generator", |
| max_retries=4, |
| model_name="claude-haiku-4-5-20251001", |
| ) |
| state = await agent.execute(state=state) |
|
|
| |
| |
| |
| svg_code = getattr(state, "figure_tec_svg_content", None) |
| if svg_code: |
| |
| if _svg_has_cjk(svg_code): |
| log.info("technical_route_desc_generator_node: 检测到 SVG 中包含中文字符") |
|
|
| |
| svg_code = _inject_chinese_font(svg_code) |
|
|
| |
| base_dir = Path(_ensure_result_path(state)) |
| base_dir.mkdir(parents=True, exist_ok=True) |
|
|
| timestamp = int(time.time()) |
| |
| svg_output_path = str((base_dir / f"technical_route_{timestamp}.svg").resolve()) |
| png_output_path = str((base_dir / f"technical_route_{timestamp}.png").resolve()) |
|
|
| try: |
| |
| Path(svg_output_path).write_text(svg_code, encoding="utf-8") |
| state.svg_file_path = svg_output_path |
|
|
| |
| png_path = local_tool_for_svg_render( |
| { |
| "svg_code": svg_code, |
| "output_path": png_output_path, |
| } |
| ) |
| |
| state.svg_img_path = png_path |
| log.critical(f"[state.svg_img_path]: {state.svg_img_path}") |
| log.critical(f"[state.svg_file_path]: {state.svg_file_path}") |
| except Exception as e: |
| |
| log.error(f"technical_route_desc_generator_node: SVG 落盘/渲染失败: {e}") |
|
|
| return state |
|
|
| async def technical_ppt_generator_node(state: Paper2FigureState) -> Paper2FigureState: |
| """ |
| 节点 4: 基于技术路线图 PNG 生成 PPT |
| |
| - 根据前面步骤生成的 PNG 整图(state.svg_img_path), |
| 生成用于展示技术路线图的 PPT。 |
| - 优先进行 SVG -> EMF 转换插入矢量图,失败时回退 PNG。 |
| """ |
| from pptx import Presentation |
| from PIL import Image |
|
|
| |
| original_max_pixels = Image.MAX_IMAGE_PIXELS |
| Image.MAX_IMAGE_PIXELS = None |
|
|
| try: |
| |
| run_root = Path(_ensure_result_path(state)) |
| output_dir = run_root |
| output_dir.mkdir(parents=True, exist_ok=True) |
|
|
| timestamp = int(time.time()) |
| ppt_path = output_dir / f"technical_route_{timestamp}.pptx" |
|
|
| prs = Presentation() |
| blank_slide_layout = prs.slide_layouts[6] |
|
|
| slide_width = prs.slide_width |
| slide_height = prs.slide_height |
|
|
| |
| |
| |
| slide = prs.slides.add_slide(blank_slide_layout) |
|
|
| svg_path = getattr(state, "svg_file_path", None) |
| png_path = getattr(state, "svg_img_path", None) |
|
|
| def _insert_picture(pic_path: str) -> bool: |
| """通用插图函数:按 80% 宽度缩放并居中。""" |
| try: |
| pic = slide.shapes.add_picture(pic_path, 0, 0) |
| except Exception as e: |
| log.error(f"technical_ppt_generator_node: 插入图片失败: {e}") |
| return False |
|
|
| if pic.width and pic.width > 0: |
| scale = (slide_width * 0.8) / pic.width |
| else: |
| scale = 1.0 |
|
|
| pic.width = int(pic.width * scale) |
| pic.height = int(pic.height * scale) |
|
|
| pic.left = int((slide_width - pic.width) / 2) |
| pic.top = int((slide_height - pic.height) / 2) |
| return True |
|
|
| def _insert_emf(emf_path: str) -> bool: |
| """EMF 插图函数:按 80% 宽度缩放并居中。""" |
| try: |
| pic = slide.shapes.add_picture(emf_path, 0, 0) |
| except Exception as e: |
| log.error(f"technical_ppt_generator_node: 插入 EMF 失败: {e}") |
| return False |
|
|
| if pic.width and pic.width > 0: |
| scale = (slide_width * 0.8) / pic.width |
| else: |
| scale = 1.0 |
|
|
| pic.width = int(pic.width * scale) |
| pic.height = int(pic.height * scale) |
|
|
| pic.left = int((slide_width - pic.width) / 2) |
| pic.top = int((slide_height - pic.height) / 2) |
| return True |
|
|
| inserted = False |
| emf_path = output_dir / f"technical_route_{timestamp}.emf" |
|
|
| |
| if svg_path: |
| try: |
| emf_abs = svg_to_emf(svg_path, str(emf_path)) |
| log.info( |
| "technical_ppt_generator_node: SVG 转 EMF 成功: %s -> %s", |
| svg_path, |
| emf_abs, |
| ) |
| inserted = _insert_emf(svg_path) |
| if inserted: |
| log.info( |
| "technical_ppt_generator_node: 使用 EMF 插入技术路线图成功: %s", |
| emf_abs, |
| ) |
| except Exception as e: |
| log.error( |
| "technical_ppt_generator_node: SVG->EMF 失败,准备回退到 PNG: %s", |
| e, |
| ) |
| inserted = False |
|
|
| |
| if (not inserted) and png_path: |
| try: |
| ok = _insert_picture(png_path) |
| if ok: |
| log.info( |
| "technical_ppt_generator_node: 使用 PNG 插入技术路线图成功: %s", |
| png_path, |
| ) |
| else: |
| log.error( |
| "technical_ppt_generator_node: PNG 插入失败,第一页可能为空白" |
| ) |
| except Exception as e: |
| log.error( |
| "technical_ppt_generator_node: PNG 插入失败,第一页将为空白: %s", |
| e, |
| ) |
|
|
| if (not inserted) and (not png_path): |
| log.warning( |
| "technical_ppt_generator_node: svg_file_path / svg_img_path 均为空," |
| "第一页将为空白" |
| ) |
|
|
| |
| |
| |
| slide2 = prs.slides.add_slide(blank_slide_layout) |
| left = int(slide_width * 0.1) |
| top = int(slide_height * 0.3) |
| width = int(slide_width * 0.8) |
| height = int(slide_height * 0.4) |
|
|
| textbox = slide2.shapes.add_textbox(left, top, width, height) |
| text_frame = textbox.text_frame |
| text_frame.text = "右键转换成形状" |
|
|
| prs.save(str(ppt_path)) |
| state.ppt_path = str(ppt_path) |
| log.info(f"technical_ppt_generator_node: PPT 已生成: {ppt_path}") |
| finally: |
| |
| Image.MAX_IMAGE_PIXELS = original_max_pixels |
|
|
| return state |
|
|
| |
| |
| |
|
|
| def set_entry_node(state: Paper2FigureState) -> str: |
| """ |
| 路由函数: 根据输入类型选择技术路线工作流的入口节点。 |
| |
| - input_type == "PDF" : 从 PDF 中抽取论文想法,先走 paper_idea_extractor |
| - input_type == "TEXT" : 直接使用调用方提供的文本描述,跳过 PDF 抽取, |
| 从 technical_route_desc_generator 开始 |
| 其他值: |
| - 认为是不合法输入,直接结束工作流。 |
| """ |
| input_type = getattr(state.request, "input_type", "PDF") |
| if input_type == "PDF": |
| log.critical("paper2technical: 进入 PDF 流程 (paper_idea_extractor)") |
| return "paper_idea_extractor" |
| elif input_type == "TEXT": |
| log.critical("paper2technical: 进入 TEXT 流程 (technical_route_desc_generator)") |
| return "technical_route_desc_generator" |
| else: |
| log.error(f"paper2technical: Invalid input type: {input_type}") |
| return "_end_" |
|
|
| def _init_result_path(state: Paper2FigureState) -> Paper2FigureState: |
| """ |
| _start_ 节点:确保本次 workflow 有一个统一的 result_path 根目录。 |
| - 若用户已在 state.result_path 传入自定义目录,则直接使用该目录; |
| - 若未传入,则初始化为 get_project_root()/outputs/paper2tec/<timestamp>。 |
| """ |
| _ensure_result_path(state) |
| return state |
|
|
| nodes = { |
| "_start_": _init_result_path, |
| "paper_idea_extractor": paper_idea_extractor_node, |
| "technical_route_desc_generator": technical_route_desc_generator_node, |
| "technical_ppt_generator": technical_ppt_generator_node, |
| "_end_": lambda state: state, |
| } |
|
|
| |
| |
| |
| edges = [ |
| |
| ("paper_idea_extractor", "technical_route_desc_generator"), |
| |
| ("technical_route_desc_generator", "technical_ppt_generator"), |
| ("technical_ppt_generator", "_end_"), |
| ] |
|
|
| builder.add_nodes(nodes).add_edges(edges).add_conditional_edge("_start_", set_entry_node) |
| return builder |
|
|