Entry Customization and Processing

def author(record: dict) -> dict:
    """
    Split author field into a list of formatted names.
    
    Processes the 'author' field by splitting on ' and ' delimiter and
    formatting each name as "Last, First" format.
    
    Parameters:
    - record (dict): Entry dictionary to process
    
    Returns:
    dict: Modified record with author field as list of formatted names
    
    Note: Removes empty author fields. Handles newlines in author strings.
    """

def editor(record: dict) -> dict:
    """
    Process editor field into structured objects with names and IDs.
    
    Similar to author processing but creates objects with 'name' and 'ID'
    fields for each editor, where ID is a sanitized version of the name.
    
    Parameters:
    - record (dict): Entry dictionary to process
    
    Returns:
    dict: Modified record with editor field as list of editor objects
    """

def splitname(name: str, strict_mode: bool = True) -> dict:
    """
    Break a name into its constituent parts: First, von, Last, and Jr.
    
    Parses names according to BibTeX conventions supporting three formats:
    - First von Last
    - von Last, First  
    - von Last, Jr, First
    
    Parameters:
    - name (str): Single name string to parse
    - strict_mode (bool): If True, raise exceptions on invalid names
    
    Returns:
    dict: Dictionary with keys 'first', 'last', 'von', 'jr' (each a list of words)
    
    Raises:
    InvalidName: If name is invalid and strict_mode=True
    """

def getnames(names: list) -> list:
    """
    Convert list of name strings to "surname, firstnames" format.
    
    Parameters:
    - names (list): List of name strings
    
    Returns:
    list: List of formatted names in "Last, First" format
    
    Note: Simplified implementation, may not handle all complex cases
    """

def find_matching(
    text: str, 
    opening: str, 
    closing: str, 
    ignore_escaped: bool = True
) -> dict:
    """
    Find matching bracket pairs in text.
    
    Parameters:
    - text (str): Text to search
    - opening (str): Opening bracket character
    - closing (str): Closing bracket character  
    - ignore_escaped (bool): Ignore escaped brackets
    
    Returns:
    dict: Mapping of opening positions to closing positions
    
    Raises:
    IndexError: If brackets are unmatched
    """

def journal(record: dict) -> dict:
    """
    Convert journal field into structured object with name and ID.
    
    Parameters:
    - record (dict): Entry dictionary to process
    
    Returns:
    dict: Modified record with journal as object containing 'name' and 'ID'
    """

def keyword(record: dict, sep: str = ',|;') -> dict:
    """
    Split keyword field into a list using specified separators.
    
    Parameters:
    - record (dict): Entry dictionary to process
    - sep (str): Regular expression pattern for separators
    
    Returns:
    dict: Modified record with keyword field as list of keywords
    """

def link(record: dict) -> dict:
    """
    Process link field into structured objects.
    
    Parses link field lines into objects with 'url', 'anchor', and 'format' fields.
    
    Parameters:
    - record (dict): Entry dictionary to process
    
    Returns:
    dict: Modified record with link field as list of link objects
    """

def page_double_hyphen(record: dict) -> dict:
    """
    Normalize page ranges to use double hyphens.
    
    Converts various hyphen types in page ranges to standard double hyphen (--).
    
    Parameters:
    - record (dict): Entry dictionary to process
    
    Returns:
    dict: Modified record with normalized page field
    """

def type(record: dict) -> dict:
    """
    Convert type field to lowercase.
    
    Parameters:
    - record (dict): Entry dictionary to process
    
    Returns:
    dict: Modified record with lowercase type field
    """

def doi(record: dict) -> dict:
    """
    Process DOI field and add to links.
    
    Converts DOI to URL format and adds to link field if not already present.
    
    Parameters:
    - record (dict): Entry dictionary to process
    
    Returns:
    dict: Modified record with DOI added to links
    """

def convert_to_unicode(record: dict) -> dict:
    """
    Convert LaTeX accents and encoding to Unicode throughout record.
    
    Processes all string fields, lists, and dictionary values in the record
    to convert LaTeX-encoded special characters to Unicode equivalents.
    
    Parameters:
    - record (dict): Entry dictionary to process
    
    Returns:
    dict: Modified record with Unicode characters
    """

def homogenize_latex_encoding(record: dict) -> dict:
    """
    Homogenize LaTeX encoding style for BibTeX output.
    
    First converts to Unicode, then converts back to consistent LaTeX encoding.
    Protects uppercase letters in title field.
    
    Parameters:
    - record (dict): Entry dictionary to process
    
    Returns:
    dict: Modified record with homogenized LaTeX encoding
    
    Note: Experimental function, may have limitations
    """

def add_plaintext_fields(record: dict) -> dict:
    """
    Add plaintext versions of all fields with 'plain_' prefix.
    
    Creates additional fields with braces and special characters removed
    for easier text processing and searching.
    
    Parameters:
    - record (dict): Entry dictionary to process
    
    Returns:
    dict: Modified record with additional plain_* fields
    """

class InvalidName(ValueError):
    """
    Exception raised by splitname() when an invalid name is encountered.
    
    Used when strict_mode=True and name cannot be parsed according to
    BibTeX naming conventions.
    """
    pass

import bibtexparser
from bibtexparser import customization

def my_customization(record):
    """Custom function to process entries during parsing."""
    # Process author names
    record = customization.author(record)
    
    # Convert journal to structured format
    record = customization.journal(record)
    
    # Split keywords
    record = customization.keyword(record)
    
    # Convert LaTeX to Unicode
    record = customization.convert_to_unicode(record)
    
    return record

# Use with parser
parser = bibtexparser.bparser.BibTexParser(customization=my_customization)
with open('bibliography.bib') as f:
    db = parser.parse_file(f)

from bibtexparser import customization

# Load database normally
with open('bibliography.bib') as f:
    db = bibtexparser.load(f)

# Apply customizations to all entries
for entry in db.entries:
    entry = customization.author(entry)
    entry = customization.page_double_hyphen(entry)
    entry = customization.doi(entry)

from bibtexparser.customization import splitname, getnames

# Parse individual names
name_parts = splitname("Jean-Baptiste von Neumann, Jr.")
print(name_parts)
# {'first': ['Jean-Baptiste'], 'von': ['von'], 'last': ['Neumann'], 'jr': ['Jr.']}

# Format multiple names
authors = ["Einstein, Albert", "Newton, Isaac", "Curie, Marie"]
formatted = getnames(authors)
print(formatted)
# ['Einstein, Albert', 'Newton, Isaac', 'Curie, Marie']

from bibtexparser.customization import convert_to_unicode, homogenize_latex_encoding

# Sample entry with LaTeX encoding
entry = {
    'title': 'Schr{\\"o}dinger\\'s Cat',
    'author': 'Erwin Schr{\\"o}dinger'
}

# Convert to Unicode
unicode_entry = convert_to_unicode(entry.copy())
print(unicode_entry['title'])  # Schrödinger's Cat

# Homogenize LaTeX encoding
latex_entry = homogenize_latex_encoding(entry.copy())
print(latex_entry['title'])  # Consistent LaTeX format

from bibtexparser.customization import keyword, link, journal

# Process keywords
entry = {'keyword': 'physics; quantum mechanics, uncertainty'}
entry = keyword(entry, sep=';|,')
print(entry['keyword'])  # ['physics', 'quantum mechanics', 'uncertainty']

# Process journal
entry = {'journal': 'Nature Physics'}
entry = journal(entry)
print(entry['journal'])  # {'name': 'Nature Physics', 'ID': 'NaturePhysics'}

# Process links
entry = {'link': 'https://example.com PDF article\nhttps://doi.org/10.1000/123 DOI'}
entry = link(entry)
print(entry['link'])
# [{'url': 'https://example.com', 'anchor': 'PDF', 'format': 'article'},
#  {'url': 'https://doi.org/10.1000/123', 'anchor': 'DOI'}]

def custom_year_processor(record):
    """Custom function to process year field."""
    if 'year' in record:
        year = record['year']
        # Convert to integer if possible
        try:
            record['year_int'] = int(year)
        except ValueError:
            record['year_int'] = None
            
        # Add century field
        if record['year_int']:
            record['century'] = (record['year_int'] - 1) // 100 + 1
    
    return record

def comprehensive_customization(record):
    """Comprehensive processing pipeline."""
    # Apply built-in customizations
    record = customization.author(record)
    record = customization.editor(record)
    record = customization.journal(record)
    record = customization.keyword(record)
    record = customization.doi(record)
    record = customization.page_double_hyphen(record)
    record = customization.convert_to_unicode(record)
    
    # Apply custom processing
    record = custom_year_processor(record)
    
    # Add plaintext fields for searching
    record = customization.add_plaintext_fields(record)
    
    return record