import os
import re
import shutil
import subprocess

otool_out = subprocess.check_output( [ 'otool', '-L', 'libmpv.1.dylib' ], encoding = 'utf-8' )

output_dir = 'mpv_dylibs'

print( 'Starting mpv dylib gather.' )

#   /usr/local/opt/ffmpeg@4/lib/libavcodec.58.dylib (compatibility version 58.0.0, current version 58.134.100)
for line in otool_out.splitlines():
    
    # don't want /System/Library stuff, do want /usr/lib stuff
    match = re.search( r'/usr/.*dylib(?=\s\()', line )
    
    if match is not None:
        
        source_path = line[ match.start() : match.end() ]
        
        destination_filename = os.path.basename( source_path )
        destination_path = os.path.join( output_dir, destination_filename )
        
        print( 'Gathering {} to {}.'.format( source_path, destination_path ) )
        
        shutil.copy2( source_path, destination_path )
        
    else:
        
        print( 'Not gathering {}.'.format( line ) )