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| import requests | |
| import json | |
| import gradio as gr | |
| # from concurrent.futures import ThreadPoolExecutor | |
| import pdfplumber | |
| import pandas as pd | |
| import time | |
| from cnocr import CnOcr | |
| # from langchain.document_loaders import PyPDFLoader | |
| from sentence_transformers import SentenceTransformer, models, util | |
| word_embedding_model = models.Transformer('sentence-transformers/all-MiniLM-L6-v2', do_lower_case=True) | |
| pooling_model = models.Pooling(word_embedding_model.get_word_embedding_dimension(), pooling_mode='cls') | |
| embedder = SentenceTransformer(modules=[word_embedding_model, pooling_model]) | |
| ocr = CnOcr() | |
| # chat_url = 'https://souljoy-my-api.hf.space/sale' | |
| chat_url = 'https://souljoy-my-api.hf.space/chatpdf' | |
| headers = { | |
| 'Content-Type': 'application/json', | |
| } | |
| # thread_pool_executor = ThreadPoolExecutor(max_workers=4) | |
| history_max_len = 500 | |
| all_max_len = 3000 | |
| def get_emb(text): | |
| emb_url = 'https://souljoy-my-api.hf.space/embeddings' | |
| data = {"content": text} | |
| try: | |
| result = requests.post(url=emb_url, | |
| data=json.dumps(data), | |
| headers=headers | |
| ) | |
| return result.json()['data'][0]['embedding'] | |
| except Exception as e: | |
| print('data', data, 'result json', result.json()) | |
| def doc_emb(doc: str): | |
| texts = doc.split('\n') | |
| # futures = [] | |
| emb_list = embedder.encode(texts) | |
| # for text in texts: | |
| # futures.append(thread_pool_executor.submit(get_emb, text)) | |
| # for f in futures: | |
| # emb_list.append(f.result()) | |
| print('\n'.join(texts)) | |
| return texts, emb_list, gr.Textbox.update(visible=True), gr.Button.update(visible=True), gr.Markdown.update( | |
| value="""success ! Let's talk"""), gr.Chatbot.update(visible=True) | |
| def get_response(msg, bot, doc_text_list, doc_embeddings): | |
| # future = thread_pool_executor.submit(get_emb, msg) | |
| now_len = len(msg) | |
| req_json = {'question': msg} | |
| his_bg = -1 | |
| for i in range(len(bot) - 1, -1, -1): | |
| if now_len + len(bot[i][0]) + len(bot[i][1]) > history_max_len: | |
| break | |
| now_len += len(bot[i][0]) + len(bot[i][1]) | |
| his_bg = i | |
| req_json['history'] = [] if his_bg == -1 else bot[his_bg:] | |
| # query_embedding = future.result() | |
| query_embedding = embedder.encode([msg]) | |
| cos_scores = util.cos_sim(query_embedding, doc_embeddings)[0] | |
| score_index = [[score, index] for score, index in zip(cos_scores, [i for i in range(len(cos_scores))])] | |
| score_index.sort(key=lambda x: x[0], reverse=True) | |
| print('score_index:\n', score_index) | |
| index_set, sub_doc_list = set(), [] | |
| for s_i in score_index: | |
| doc = doc_text_list[s_i[1]] | |
| if now_len + len(doc) > all_max_len: | |
| break | |
| index_set.add(s_i[1]) | |
| now_len += len(doc) | |
| # Maybe the paragraph is truncated wrong, so add the upper and lower paragraphs | |
| if s_i[1] > 0 and s_i[1] -1 not in index_set: | |
| doc = doc_text_list[s_i[1]-1] | |
| if now_len + len(doc) > all_max_len: | |
| break | |
| index_set.add(s_i[1]-1) | |
| now_len += len(doc) | |
| if s_i[1] + 1 < len(doc_text_list) and s_i[1] + 1 not in index_set: | |
| doc = doc_text_list[s_i[1]+1] | |
| if now_len + len(doc) > all_max_len: | |
| break | |
| index_set.add(s_i[1]+1) | |
| now_len += len(doc) | |
| index_list = list(index_set) | |
| index_list.sort() | |
| for i in index_list: | |
| sub_doc_list.append(doc_text_list[i]) | |
| req_json['doc'] = '' if len(sub_doc_list) == 0 else '\n'.join(sub_doc_list) | |
| data = {"content": json.dumps(req_json)} | |
| print('data:\n', req_json) | |
| result = requests.post(url=chat_url, | |
| data=json.dumps(data), | |
| headers=headers | |
| ) | |
| res = result.json()['content'] | |
| bot.append([msg, res]) | |
| return bot[max(0, len(bot) - 3):] | |
| def up_file(files): | |
| doc_text_list = [] | |
| for idx, file in enumerate(files): | |
| print(file.name) | |
| with pdfplumber.open(file.name) as pdf: | |
| for i in range(len(pdf.pages)): | |
| # Read page i+1 of a PDF document | |
| page = pdf.pages[i] | |
| res_list = page.extract_text().split('\n')[:-1] | |
| for j in range(len(page.images)): | |
| # Get the binary stream of the image | |
| img = page.images[j] | |
| file_name = '{}-{}-{}.png'.format(str(time.time()), str(i), str(j)) | |
| with open(file_name, mode='wb') as f: | |
| f.write(img['stream'].get_data()) | |
| try: | |
| res = ocr.ocr(file_name) | |
| # res = PyPDFLoader(file_name) | |
| except Exception as e: | |
| res = [] | |
| if len(res) > 0: | |
| res_list.append(' '.join([re['text'] for re in res])) | |
| tables = page.extract_tables() | |
| for table in tables: | |
| # The first column is used as the header | |
| df = pd.DataFrame(table[1:], columns=table[0]) | |
| try: | |
| records = json.loads(df.to_json(orient="records", force_ascii=False)) | |
| for rec in records: | |
| res_list.append(json.dumps(rec, ensure_ascii=False)) | |
| except Exception as e: | |
| res_list.append(str(df)) | |
| doc_text_list += res_list | |
| doc_text_list = [str(text).strip() for text in doc_text_list if len(str(text).strip()) > 0] | |
| # print(doc_text_list) | |
| return gr.Textbox.update(value='\n'.join(doc_text_list), visible=True), gr.Button.update( | |
| visible=True), gr.Markdown.update( | |
| value="Processing") | |
| with gr.Blocks(css=".gradio-container {background-color: Tomato}, footer {visibility: hidden}") as demo: | |
| with gr.Row(): | |
| with gr.Column(): | |
| file = gr.File(file_types=['.pdf'], label='Click to upload Document', file_count='multiple') | |
| doc_bu = gr.Button(value='Submit', visible=False) | |
| txt = gr.Textbox(label='result', visible=False) | |
| doc_text_state = gr.State([]) | |
| doc_emb_state = gr.State([]) | |
| with gr.Column(): | |
| md = gr.Markdown("Please Upload the PDF") | |
| chat_bot = gr.Chatbot(visible=False) | |
| msg_txt = gr.Textbox(visible = False) | |
| chat_bu = gr.Button(value='Clear', visible=False) | |
| file.change(up_file, [file], [txt, doc_bu, md]) #hiding the text | |
| doc_bu.click(doc_emb, [txt], [doc_text_state, doc_emb_state, msg_txt, chat_bu, md, chat_bot]) | |
| # msg_txt.submit(get_response, [msg_txt, chat_bot,doc_text_state, doc_emb_state], [msg_txt, chat_bot]) | |
| chat_bu.click(get_response, [msg_txt, chat_bot,doc_text_state, doc_emb_state], [msg_txt, chat_bot]) | |
| if __name__ == "__main__": | |
| demo.queue().launch() | |
| # demo.queue().launch(share=False, server_name='172.22.2.54', server_port=9191) |