calibre to EndNote

[Bill Overal]

For individual convertions of a book's .opf file to an .enw file, the following AI-generated Python program functions well. Place the Python script and the .opf files in the same folder, and the .emw files will be generated in the same folder, ready for entry into EndNote. This saves having to generate a BIBText file to be read by JebRef and out-putting as an EndNote text input file. The .opf file, with a little help, could probably be converted into an .RIS file. Unfortunely, there is no way of saving .opf files to disk, so you have to dig for them. The Python script is the following:

import xml.etree.ElementTree as ET
import os

def opf_to_enw(opf_path):
try:
tree = ET.parse(opf_path)
root = tree.getroot()
ns = {
'dc': 'http://purl.org/dc/elements/1.1/',
'opf': 'http://www.idpf.org/2007/opf'
}

title = root.find('.//dc:title', ns)
creators = root.findall('.//dc:creator', ns)
publisher = root.find('.//dcublisher', ns)
date = root.find('.//dc:date', ns)
identifiers = root.findall('.//dc:identifier', ns)

author_lines = [f"%A {c.text.strip()}" for c in creators if c.text]

isbn = None
for ident in identifiers:
text = ident.text.strip() if ident.text else ''
if len(text) in [10, 13] and text.isdigit():
isbn = text
if len(text) == 13:
break

enw_lines = ['%0 Book']
if title is not None and title.text:
enw_lines.append(f"%T {title.text.strip()}")
enw_lines.extend(author_lines)
if date is not None and date.text:
enw_lines.append(f"%D {date.text.strip()}")
if publisher is not None and publisher.text:
enw_lines.append(f"%I {publisher.text.strip()}")
if isbn:
enw_lines.append(f"%@ {isbn}")

# Save file with same base name
enw_path = opf_path.replace('.opf', '.enw')
with open(enw_path, 'w', encoding='utf-8') as f:
f.write('\n'.join(enw_lines) + '\n')
print(f"✔ Converted: {os.path.basename(opf_path)}")
except Exception as e:
print(f"✘ Error processing {opf_path}: {e}")

if __name__ == "__main__":
folder = os.path.dirname(os.path.abspath(__file__))
print(f"📂 Processing .opf files in folder: {folder}\n")

for file in os.listdir(folder):
if file.lower().endswith('.opf'):
opf_to_enw(os.path.join(folder, file))

print("\n✅ Done. .enw files saved in the same folder.")
input("\nPress Enter to close.")

[PeterT]

Just wrapping the script in a [code]....[/code] block for clarity

Originally Posted by Bill Overal

import xml.etree.ElementTree as ET
import os

def opf_to_enw(opf_path):
    try:
        tree = ET.parse(opf_path)
        root = tree.getroot()
        ns = {
            'dc': 'http://purl.org/dc/elements/1.1/',
            'opf': 'http://www.idpf.org/2007/opf'
        }

        title = root.find('.//dc:title', ns)
        creators = root.findall('.//dc:creator', ns)
        publisher = root.find('.//dc:publisher', ns)
        date = root.find('.//dc:date', ns)
        identifiers = root.findall('.//dc:identifier', ns)

        author_lines = [f"%A {c.text.strip()}" for c in creators if c.text]

        isbn = None
        for ident in identifiers:
            text = ident.text.strip() if ident.text else ''
            if len(text) in [10, 13] and text.isdigit():
                isbn = text
                if len(text) == 13:
                    break

        enw_lines = ['%0 Book']
        if title is not None and title.text:
            enw_lines.append(f"%T {title.text.strip()}")
        enw_lines.extend(author_lines)
        if date is not None and date.text:
            enw_lines.append(f"%D {date.text.strip()}")
        if publisher is not None and publisher.text:
            enw_lines.append(f"%I {publisher.text.strip()}")
        if isbn:
            enw_lines.append(f"%@ {isbn}")

        # Save file with same base name
        enw_path = opf_path.replace('.opf', '.enw')
        with open(enw_path, 'w', encoding='utf-8') as f:
            f.write('\n'.join(enw_lines) + '\n')
        print(f"✔ Converted: {os.path.basename(opf_path)}")
    except Exception as e:
        print(f"✘ Error processing {opf_path}: {e}")

if __name__ == "__main__":
    folder = os.path.dirname(os.path.abspath(__file__))
    print(f"�� Processing .opf files in folder: {folder}\n")

    for file in os.listdir(folder):
        if file.lower().endswith('.opf'):
            opf_to_enw(os.path.join(folder, file))

    print("\n✅ Done. .enw files saved in the same folder.")
    input("\nPress Enter to close.")