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Source - CharCodes
- PDF character code constants.
- is_delimiter
- Check if a byte is a PDF delimiter character.
- is_digit
- Check if a byte is a digit (0-9).
- is_irregular
- Check if a byte is an “irregular” character (whitespace, delimiter, or hash).
- is_numeric
- Check if a byte is numeric (digit or numeric prefix).
- is_numeric_prefix
- Check if a byte is a numeric prefix (+, -, .).
- is_regular_char
- Check if a character code is a “regular” character for PDF names.
Regular characters are ! through ~ excluding irregular characters.
- is_whitespace
- Check if a byte is a PDF whitespace character.