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235 lines
8.7 KiB
Python
235 lines
8.7 KiB
Python
# Copyright (c) Opendatalab. All rights reserved.
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import base64
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import os
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import re
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import time
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import uuid
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import zipfile
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from pathlib import Path
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import gradio as gr
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import pymupdf
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from gradio_pdf import PDF
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from loguru import logger
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from magic_pdf.data.data_reader_writer import FileBasedDataReader
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from magic_pdf.libs.hash_utils import compute_sha256
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from magic_pdf.tools.common import do_parse, prepare_env
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def read_fn(path):
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disk_rw = FileBasedDataReader(os.path.dirname(path))
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return disk_rw.read(os.path.basename(path))
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def parse_pdf(doc_path, output_dir, end_page_id, is_ocr, layout_mode, formula_enable, table_enable, language):
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os.makedirs(output_dir, exist_ok=True)
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try:
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file_name = f'{str(Path(doc_path).stem)}_{time.time()}'
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pdf_data = read_fn(doc_path)
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if is_ocr:
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parse_method = 'ocr'
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else:
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parse_method = 'auto'
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local_image_dir, local_md_dir = prepare_env(output_dir, file_name, parse_method)
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do_parse(
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output_dir,
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file_name,
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pdf_data,
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[],
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parse_method,
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False,
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end_page_id=end_page_id,
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layout_model=layout_mode,
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formula_enable=formula_enable,
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table_enable=table_enable,
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lang=language,
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)
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return local_md_dir, file_name
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except Exception as e:
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logger.exception(e)
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def compress_directory_to_zip(directory_path, output_zip_path):
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"""压缩指定目录到一个 ZIP 文件。
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:param directory_path: 要压缩的目录路径
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:param output_zip_path: 输出的 ZIP 文件路径
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"""
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try:
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with zipfile.ZipFile(output_zip_path, 'w', zipfile.ZIP_DEFLATED) as zipf:
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# 遍历目录中的所有文件和子目录
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for root, dirs, files in os.walk(directory_path):
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for file in files:
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# 构建完整的文件路径
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file_path = os.path.join(root, file)
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# 计算相对路径
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arcname = os.path.relpath(file_path, directory_path)
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# 添加文件到 ZIP 文件
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zipf.write(file_path, arcname)
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return 0
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except Exception as e:
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logger.exception(e)
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return -1
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def image_to_base64(image_path):
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with open(image_path, 'rb') as image_file:
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return base64.b64encode(image_file.read()).decode('utf-8')
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def replace_image_with_base64(markdown_text, image_dir_path):
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# 匹配Markdown中的图片标签
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pattern = r'\!\[(?:[^\]]*)\]\(([^)]+)\)'
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# 替换图片链接
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def replace(match):
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relative_path = match.group(1)
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full_path = os.path.join(image_dir_path, relative_path)
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base64_image = image_to_base64(full_path)
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return f''
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# 应用替换
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return re.sub(pattern, replace, markdown_text)
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def to_markdown(file_path, end_pages, is_ocr, layout_mode, formula_enable, table_enable, language):
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file_path = to_pdf(file_path)
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# 获取识别的md文件以及压缩包文件路径
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local_md_dir, file_name = parse_pdf(file_path, './output', end_pages - 1, is_ocr,
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layout_mode, formula_enable, table_enable, language)
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archive_zip_path = os.path.join('./output', compute_sha256(local_md_dir) + '.zip')
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zip_archive_success = compress_directory_to_zip(local_md_dir, archive_zip_path)
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if zip_archive_success == 0:
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logger.info('压缩成功')
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else:
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logger.error('压缩失败')
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md_path = os.path.join(local_md_dir, file_name + '.md')
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with open(md_path, 'r', encoding='utf-8') as f:
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txt_content = f.read()
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md_content = replace_image_with_base64(txt_content, local_md_dir)
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# 返回转换后的PDF路径
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new_pdf_path = os.path.join(local_md_dir, file_name + '_layout.pdf')
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return md_content, txt_content, archive_zip_path, new_pdf_path
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latex_delimiters = [
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{'left': '$$', 'right': '$$', 'display': True},
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{'left': '$', 'right': '$', 'display': False},
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{'left': '\\(', 'right': '\\)', 'display': False},
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{'left': '\\[', 'right': '\\]', 'display': True},
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]
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def init_model():
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from magic_pdf.model.doc_analyze_by_custom_model import ModelSingleton
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try:
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model_manager = ModelSingleton()
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txt_model = model_manager.get_model(False, False) # noqa: F841
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logger.info('txt_model init final')
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ocr_model = model_manager.get_model(True, False) # noqa: F841
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logger.info('ocr_model init final')
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return 0
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except Exception as e:
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logger.exception(e)
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return -1
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model_init = init_model()
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logger.info(f'model_init: {model_init}')
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with open('header.html', 'r') as file:
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header = file.read()
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latin_lang = [
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'af', 'az', 'bs', 'cs', 'cy', 'da', 'de', 'es', 'et', 'fr', 'ga', 'hr', # noqa: E126
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'hu', 'id', 'is', 'it', 'ku', 'la', 'lt', 'lv', 'mi', 'ms', 'mt', 'nl',
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'no', 'oc', 'pi', 'pl', 'pt', 'ro', 'rs_latin', 'sk', 'sl', 'sq', 'sv',
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'sw', 'tl', 'tr', 'uz', 'vi', 'french', 'german'
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]
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arabic_lang = ['ar', 'fa', 'ug', 'ur']
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cyrillic_lang = [
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'ru', 'rs_cyrillic', 'be', 'bg', 'uk', 'mn', 'abq', 'ady', 'kbd', 'ava', # noqa: E126
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'dar', 'inh', 'che', 'lbe', 'lez', 'tab'
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]
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devanagari_lang = [
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'hi', 'mr', 'ne', 'bh', 'mai', 'ang', 'bho', 'mah', 'sck', 'new', 'gom', # noqa: E126
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'sa', 'bgc'
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]
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other_lang = ['ch', 'ch_lite', 'ch_server', 'en', 'korean', 'japan', 'chinese_cht', 'ta', 'te', 'ka']
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add_lang = ['latin', 'arabic', 'cyrillic', 'devanagari']
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# all_lang = ['', 'auto']
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all_lang = []
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# all_lang.extend([*other_lang, *latin_lang, *arabic_lang, *cyrillic_lang, *devanagari_lang])
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all_lang.extend([*other_lang, *add_lang])
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def to_pdf(file_path):
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with pymupdf.open(file_path) as f:
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if f.is_pdf:
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return file_path
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else:
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pdf_bytes = f.convert_to_pdf()
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# 将pdfbytes 写入到uuid.pdf中
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# 生成唯一的文件名
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unique_filename = f'{uuid.uuid4()}.pdf'
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# 构建完整的文件路径
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tmp_file_path = os.path.join(os.path.dirname(file_path), unique_filename)
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# 将字节数据写入文件
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with open(tmp_file_path, 'wb') as tmp_pdf_file:
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tmp_pdf_file.write(pdf_bytes)
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return tmp_file_path
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if __name__ == '__main__':
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with gr.Blocks() as demo:
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gr.HTML(header)
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with gr.Row():
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with gr.Column(variant='panel', scale=5):
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file = gr.File(label='Please upload a PDF or image', file_types=['.pdf', '.png', '.jpeg', '.jpg'])
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max_pages = gr.Slider(1, 20, 10, step=1, label='Max convert pages')
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with gr.Row():
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layout_mode = gr.Dropdown(['doclayout_yolo'], label='Layout model', value='doclayout_yolo')
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language = gr.Dropdown(all_lang, label='Language', value='ch')
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with gr.Row():
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formula_enable = gr.Checkbox(label='Enable formula recognition', value=True)
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is_ocr = gr.Checkbox(label='Force enable OCR', value=False)
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table_enable = gr.Checkbox(label='Enable table recognition(test)', value=True)
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with gr.Row():
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change_bu = gr.Button('Convert')
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clear_bu = gr.ClearButton(value='Clear')
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pdf_show = PDF(label='PDF preview', interactive=False, visible=True, height=800)
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with gr.Accordion('Examples:'):
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example_root = os.path.join(os.path.dirname(__file__), 'examples')
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gr.Examples(
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examples=[os.path.join(example_root, _) for _ in os.listdir(example_root) if
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_.endswith('pdf')],
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inputs=file
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)
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with gr.Column(variant='panel', scale=5):
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output_file = gr.File(label='convert result', interactive=False)
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with gr.Tabs():
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with gr.Tab('Markdown rendering'):
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md = gr.Markdown(label='Markdown rendering', height=1100, show_copy_button=True,
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latex_delimiters=latex_delimiters,
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line_breaks=True)
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with gr.Tab('Markdown text'):
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md_text = gr.TextArea(lines=45, show_copy_button=True)
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file.change(fn=to_pdf, inputs=file, outputs=pdf_show)
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change_bu.click(fn=to_markdown, inputs=[file, max_pages, is_ocr, layout_mode, formula_enable, table_enable, language],
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outputs=[md, md_text, output_file, pdf_show])
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clear_bu.add([file, md, pdf_show, md_text, output_file, is_ocr])
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demo.launch(server_name='0.0.0.0')
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