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script/extract-text.py

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+import os
+import json
+from bs4 import BeautifulSoup
+import ebooklib
+from ebooklib import epub
+import re
+import xml.etree.ElementTree as ET
+
+folder_path = './books'  # Replace with your folder path
+output_file_pattern = './output/output_part_{}.jsonl'  # Pattern for output files
+part_size = 1  # Number of files per part
+part_counter = 0
+file_counter = 0
+
+def correct_french_punctuation(text):
+    # Correct spaces before punctuation in French
+    text = re.sub(r'\s+([?!:;])', r'\1', text)  # Remove space before punctuation
+    text = re.sub(r'([?!:;])\s*', r'\1 ', text)  # Add space after punctuation if not already present
+    text = re.sub(r'\s*-\s*', '-', text)
+    text = re.sub(r'\s*–\s*', '-', text)
+    return text
+
+def find_navpoint_2_in_toc(book):
+    toc_item = book.get_item_with_id('ncx')
+    if toc_item is None:
+        return None
+    toc_content = toc_item.get_content()
+    namespaces = {'ncx': 'http://www.daisy.org/z3986/2005/ncx/'}
+    toc_root = ET.fromstring(toc_content)
+
+    nav_points = toc_root.findall('.//ncx:navPoint', namespaces)
+    for nav_point in nav_points:
+        if nav_point.attrib.get('id') == 'navpoint-2':
+            return nav_point.text if nav_point.text else None
+    return None
+
+def find_section_href_in_toc(book, section_title):
+    toc_item = book.get_item_with_id('ncx')
+    if toc_item is None:
+        return None
+    toc_content = toc_item.get_content()
+    namespaces = {'ncx': 'http://www.daisy.org/z3986/2005/ncx/'}
+    toc_root = ET.fromstring(toc_content)
+    nav_points = toc_root.findall('.//ncx:navPoint', namespaces)
+    for nav_point in nav_points:
+        text_elements = nav_point.findall('.//ncx:navLabel/ncx:text', namespaces)
+        for text_element in text_elements:
+            if text_element.text == section_title:
+                content_element = nav_point.find('.//ncx:content', namespaces)
+                if content_element is not None:
+                    return content_element.attrib['src']
+    return None
+
+def extract_content_from_epub(book):
+    text = ''
+    start_section = find_section_href_in_toc(book, "Avant propos") or find_section_href_in_toc(book, "Premier Chapitre")
+    end_section_1 = find_section_href_in_toc(book, "À propos de cette édition électronique")
+    end_section_2 = find_section_href_in_toc(book, "Bibliographie – Œuvres complètes")
+
+    # Determine the final end section
+    if end_section_1 is not None and end_section_2 is not None:
+        end_section = end_section_1 if end_section_1 < end_section_2 else end_section_2
+    elif end_section_1 is not None:
+        end_section = end_section_1
+    else:
+        end_section = end_section_2
+
+    extracting = start_section is None  # Start extracting if no specific start section
+
+    for item in book.get_items():
+        if item.get_type() == ebooklib.ITEM_DOCUMENT:
+            item_id = item.get_name()
+            if start_section and start_section in item_id:
+                extracting = True
+            if end_section and end_section in item_id:
+                break
+            if extracting or not start_section:
+                try:
+                    soup = BeautifulSoup(item.get_content(), 'html.parser')
+                    for p in soup.find_all('p'):  # Process paragraph by paragraph
+                        paragraph = p.get_text(separator='\n')
+                        paragraph = paragraph.replace(u'\xa0', ' ')
+                        paragraph = correct_french_punctuation(paragraph)
+                        text += paragraph + '\n'
+                        # Check for end phrases after each paragraph
+                        if "FIN" in paragraph:
+                            text = text.split("FIN", 1)[0]
+                            print("End of book reached")
+                            return text
+                        elif "la Bibliothèque électronique du Québec" in paragraph:
+                            text = text.split("la Bibliothèque électronique du Québec", 1)[0]
+                            print("End of book reached")
+                            return text
+                        elif "ouvrage est le" in paragraph:
+                            text = text.split("ouvrage est le", 1)[0]
+                            print("End of book reached")
+                            return text
+                except Exception as e:
+                    print(f"Error processing content: {e}")
+
+    if not text:
+        print("Fallback: Adding all text as no specific sections were found.")
+        for item in book.get_items():
+            if item.get_type() == ebooklib.ITEM_DOCUMENT:
+                try:
+                    soup = BeautifulSoup(item.get_content(), 'html.parser')
+                    text += soup.get_text(separator='\n').replace(u'\xa0', ' ') + '\n'
+                except Exception as e:
+                    print(f"Error in fallback processing: {e}")
+
+    return text
+
+
+
+
+def extract_metadata_from_epub(book):
+    metadata = {}
+    try:
+        metadata['title'] = book.get_metadata('DC', 'title')
+        metadata['author'] = book.get_metadata('DC', 'creator')
+        metadata['publisher'] = book.get_metadata('DC', 'publisher')
+        # Add more metadata fields if needed
+    except Exception as e:
+        print(f"Error extracting metadata: {e}")
+    return metadata
+
+for file in os.listdir(folder_path):
+    if file.endswith('.epub'):
+        if file_counter % part_size == 0:
+            if 'jsonl_file' in locals():
+                jsonl_file.close()
+            part_counter += 1
+            jsonl_file = open(output_file_pattern.format(part_counter), 'w', encoding='utf-8')
+
+        full_path = os.path.join(folder_path, file)
+        try:
+            book = epub.read_epub(full_path)
+            text = extract_content_from_epub(book)
+            meta = extract_metadata_from_epub(book)
+            jsonl_file.write(json.dumps({"text": text, "meta": meta}, ensure_ascii=False) + '\n')
+            file_counter += 1
+            print(f"reading file {file}")
+        except Exception as e:
+            print(f"Error reading file {file}: {e}")
+
+if 'jsonl_file' in locals():
+    jsonl_file.close()