import sys
import re

# Example Python script to convert single-line comments to block comments
def convert_slashes_to_block(code_str: bytes) -> bytes:
    """
    Converts consecutive C-style single-line '//' comments into a single
    multi-line '/* ... */' block comment.

    Args:
        code_str: A string containing C-style code.

    Returns:
        The modified string with block comments.
    """
    lines = code_str.split(b'\n')
    lines_with_double_slash = []
    slash_pos = -1
    lines_final = []
    for line in lines:
        need_append = False
        if line.strip().startswith(b'//') and not line.strip().startswith(b'///'):
            slash_pos_new = line.find(b'//')
            if (slash_pos == -1):
                slash_pos = slash_pos_new
                need_append = True
            elif slash_pos_new == slash_pos:
                need_append = True
        if need_append:
            lines_with_double_slash.append(line)
        else:
            if (len(lines_with_double_slash) > 0):
                if (len(lines_with_double_slash) == 1):
                    first_line = lines_with_double_slash[0]
                    comment_line = first_line[:slash_pos] + b'/* ' + first_line[slash_pos + 2:].strip() + b' */'
                    lines_final.append(comment_line)
                else:
                    first_line = lines_with_double_slash[0]
                    spaces = first_line[:slash_pos]
                    comment_line = spaces + b'/*'
                    lines_final.append(comment_line)
                    for slash_line in lines_with_double_slash:
                        comment_line = spaces + b' *' + slash_line[slash_pos + 2:]
                        lines_final.append(comment_line)
                    lines_final.append(spaces + b' */')
                lines_with_double_slash = []
                slash_pos = -1
            current_slash_pos = line.rfind(b' // ')
            if current_slash_pos != -1 and line[current_slash_pos:].find(b'"') == -1:
                lines_final.append(line[:current_slash_pos] + b' /* ' + line[current_slash_pos + 4:] + b' */')
            else:
                lines_final.append(line)
    return b'\n'.join(lines_final)

def convert_comments(filename):
    with open(filename, 'rb') as f:
        content = convert_slashes_to_block(f.read())
    with open(filename, 'wb') as f:
        f.write(content)
if len(sys.argv) > 1:
    print("First argument:", sys.argv[1])
    convert_comments(sys.argv[1])