'''
Created on 22 nov. 2016

@author: olivier.massot
'''
from ffile import flist
import sys




def compare_dirs(source_dir, reference_dir):
    print("** Compare {} to {} **".format(source_dir, reference_dir))
    err_code = 0
    list_source_dir = flist(source_dir, recursive=True, listdirs=False, listfiles=True, complete_paths=True)
    
    list_reference_dir = flist(reference_dir, recursive=True, listdirs=False, listfiles=True, complete_paths=True)
    
    if len(list_source_dir) != len(list_reference_dir):
        print(">> number of dirs / files does not match")
        print("Diff:")
        for name in list( set(list_source_dir) - set(list_reference_dir) ):
            print("+ "+name)
            err_code += 1
        for name in list( set(list_reference_dir) - set(list_source_dir) ):
            print("- "+name)
            err_code += 1        
        
    
    for source_path in list_source_dir:
        linecount = 0
        with open(source_path, "rb") as source_file:
            
            ref_path = source_path.replace(source_dir, reference_dir)
            with open(ref_path, "rb") as ref_file:
                
                for line in source_file:
                    linecount += 1
                    
                    if line != ref_file.readline():
                        print("> {} : source and ref differ at line {}".format(source_path, linecount))
                        err_code += 1
                        continue
                
    return err_code
    
if __name__ == "__main__":
    _, source_dir, reference_dir = sys.argv
    exit_result = compare_dirs(source_dir, reference_dir)
    sys.exit(exit_result)