app.py

# Copyright (c) Opendatalab. All rights reserved.

import base64
import json
import os
import time
import zipfile
from pathlib import Path
import re
import uuid
import pymupdf

# os.system('pip install -U magic-pdf==0.10.5')
os.system('pip uninstall -y magic-pdf')
os.system('pip install git+https://github.com/opendatalab/MinerU.git@dev')

os.system('wget https://github.com/opendatalab/MinerU/raw/dev/scripts/download_models_hf.py -O download_models_hf.py')
os.system('python download_models_hf.py')

with open('/home/user/magic-pdf.json', 'r') as file:
    data = json.load(file)

# 修改处1：允许cpu和gpu自动选择，cuda不可用自动回落到cpu
data['device-mode'] = "cuda" if os.system("command -v nvidia-smi > /dev/null") == 0 else "cpu"

if os.getenv('apikey'):
    data['llm-aided-config']['title_aided']['api_key'] = os.getenv('apikey')
    data['llm-aided-config']['title_aided']['enable'] = True

with open('/home/user/magic-pdf.json', 'w') as file:
    json.dump(data, file, indent=4)

from gradio_pdf import PDF

import gradio as gr
from loguru import logger

from magic_pdf.data.data_reader_writer import FileBasedDataReader
from magic_pdf.libs.hash_utils import compute_sha256
from magic_pdf.tools.common import do_parse, prepare_env


def read_fn(path):
    disk_rw = FileBasedDataReader(os.path.dirname(path))
    return disk_rw.read(os.path.basename(path))


def parse_pdf(doc_path, output_dir, end_page_id, is_ocr, layout_mode, formula_enable, table_enable, language):
    os.makedirs(output_dir, exist_ok=True)

    try:
        file_name = f"{str(Path(doc_path).stem)}_{time.time()}"
        pdf_data = read_fn(doc_path)
        parse_method = "ocr" if is_ocr else "auto"
        local_image_dir, local_md_dir = prepare_env(output_dir, file_name, parse_method)
        do_parse(
            output_dir,
            file_name,
            pdf_data,
            [],
            parse_method,
            False,
            end_page_id=end_page_id,
            layout_model=layout_mode,
            formula_enable=formula_enable,
            table_enable=table_enable,
            lang=language,
            f_dump_orig_pdf=False,
        )
        return local_md_dir, file_name
    except Exception as e:
        logger.exception(e)


def compress_directory_to_zip(directory_path, output_zip_path):
    try:
        with zipfile.ZipFile(output_zip_path, 'w', zipfile.ZIP_DEFLATED) as zipf:
            for root, dirs, files in os.walk(directory_path):
                for file in files:
                    file_path = os.path.join(root, file)
                    arcname = os.path.relpath(file_path, directory_path)
                    zipf.write(file_path, arcname)
        return 0
    except Exception as e:
        logger.exception(e)
        return -1


def image_to_base64(image_path):
    with open(image_path, "rb") as image_file:
        return base64.b64encode(image_file.read()).decode('utf-8')


def replace_image_with_base64(markdown_text, image_dir_path):
    pattern = r'\!\[(?:[^\]]*)\]\(([^)]+)\)'

    # 使用lambda简化函数
    return re.sub(pattern,
                  lambda match: f"![{match.group(1)}](data:image/jpeg;base64,{image_to_base64(os.path.join(image_dir_path, match.group(1)))})",
                  markdown_text)


def to_markdown(file_path, end_pages, is_ocr, layout_mode, formula_enable, table_enable, language):
    file_path = to_pdf(file_path)
    # 修改处2：不再限制最大20页
    local_md_dir, file_name = parse_pdf(file_path, './output', end_pages - 1, is_ocr,
                                        layout_mode, formula_enable, table_enable, language)
    archive_zip_path = os.path.join("./output", compute_sha256(local_md_dir) + ".zip")
    zip_archive_success = compress_directory_to_zip(local_md_dir, archive_zip_path)
    if zip_archive_success == 0:
        logger.info("压缩成功")
    else:
        logger.error("压缩失败")
    md_path = os.path.join(local_md_dir, file_name + ".md")
    with open(md_path, 'r', encoding='utf-8') as f:
        txt_content = f.read()
    md_content = replace_image_with_base64(txt_content, local_md_dir)
    new_pdf_path = os.path.join(local_md_dir, file_name + "_layout.pdf")

    return md_content, txt_content, archive_zip_path, new_pdf_path


latex_delimiters = [{"left": "$$", "right": "$$", "display": True},
                    {"left": '$', "right": '$', "display": False}]


def init_model():
    from magic_pdf.model.doc_analyze_by_custom_model import ModelSingleton
    try:
        model_manager = ModelSingleton()
        model_manager.get_model(False, False)
        model_manager.get_model(True, False)
        return 0
    except Exception as e:
        logger.exception(e)
        return -1


model_init = init_model()
logger.info(f"model_init: {model_init}")

with open("header.html", "r") as file:
    header = file.read()

latin_lang = ['af', 'az', 'bs', 'cs', 'cy', 'da', 'de', 'es', 'et', 'fr', 'ga', 'hr',
              'hu', 'id', 'is', 'it', 'ku', 'la', 'lt', 'lv', 'mi', 'ms', 'mt', 'nl',
              'no', 'oc', 'pi', 'pl', 'pt', 'ro', 'rs_latin', 'sk', 'sl', 'sq', 'sv',
              'sw', 'tl', 'tr', 'uz', 'vi', 'french', 'german']
arabic_lang = ['ar', 'fa', 'ug', 'ur']
cyrillic_lang = ['ru', 'rs_cyrillic', 'be', 'bg', 'uk', 'mn', 'abq', 'ady', 'kbd', 'ava',
                 'dar', 'inh', 'che', 'lbe', 'lez', 'tab']
devanagari_lang = ['hi', 'mr', 'ne', 'bh', 'mai', 'ang', 'bho', 'mah', 'sck', 'new', 'gom',
                   'sa', 'bgc']
other_lang = ['ch', 'en', 'korean', 'japan', 'chinese_cht', 'ta', 'te', 'ka']
all_lang = ['', 'auto'] + other_lang + latin_lang + arabic_lang + cyrillic_lang + devanagari_lang


def to_pdf(file_path):
    with pymupdf.open(file_path) as f:
        if f.is_pdf:
            return file_path
        pdf_bytes = f.convert_to_pdf()
        tmp_file_path = os.path.join(os.path.dirname(file_path), f"{uuid.uuid4()}.pdf")
        with open(tmp_file_path, 'wb') as tmp_pdf_file:
            tmp_pdf_file.write(pdf_bytes)
        return tmp_file_path

if __name__ == "__main__":
    with gr.Blocks() as demo:
        gr.HTML(header)
        with gr.Row():
            with gr.Column(scale=5):
                file = gr.File(label="Please upload a PDF or image", file_types=[".pdf", ".png", ".jpeg", ".jpg"])
                # 修改处3：gradio界面页数最大改为99999
                max_pages = gr.Slider(1, 99999, 10, step=1, label='Max convert pages')
                with gr.Row():
                    layout_mode = gr.Dropdown(["doclayout_yolo"], label="Layout model", value="doclayout_yolo")
                    language = gr.Dropdown(all_lang, label="Language", value='auto')
                with gr.Row():
                    formula_enable = gr.Checkbox(label="Enable formula recognition", value=True)
                    is_ocr = gr.Checkbox(label="Force enable OCR", value=False)
                    table_enable = gr.Checkbox(label="Enable table recognition(test)", value=True)
                with gr.Row():
                    change_bu = gr.Button("Convert")
                    clear_bu = gr.ClearButton(value="Clear")
                pdf_show = PDF(label='PDF preview', interactive=False, visible=True, height=800)

            with gr.Column(scale=5):
                output_file = gr.File(label="convert result", interactive=False)
                md = gr.Markdown()
                md_text = gr.TextArea(lines=45)

        file.change(fn=to_pdf, inputs=file, outputs=pdf_show)
        change_bu.click(fn=to_markdown, inputs=[file, max_pages, is_ocr, layout_mode, formula_enable, table_enable, language],
                        outputs=[md, md_text, output_file, pdf_show])
        clear_bu.add([file, md, pdf_show, md_text, output_file, is_ocr])

    demo.launch(ssr_mode=True)