recipe-473828.py 文件源码

def main():

    # if parameters are wrong, exit with error
    if len(sys.argv) < 5:

        print '\nUsage:'
        print 'python regexplace.py dirname files-regexp search-regexp replace-string'

        sys.exit(1)

    # ask user for simulated execution or real substitution
    print '\nyou are replacing %s with %s in %s' %(sys.argv[3], sys.argv[4], sys.argv[2])
    question1 = raw_input('continue with real substitution (y/N) ? ')
    question1 = string.lower(question1)

    # if user selected real substitution, ask user if execution must be step by step
    if question1=='y':
        question2 = raw_input('\nsubstitute step by step (Y/n) ? ')
        question2 = string.lower(question2)

    # make the file list
    fileslist = make_files_list(sys.argv[1], sys.argv[2])

    # if real substitution
    if question1=='y':

        # if step by step
        if question2!='n':
            replace_in_files(fileslist, sys.argv[3], sys.argv[4], 0, 1)

        # if not step by step
        else:
            replace_in_files(fileslist, sys.argv[3], sys.argv[4], 0, 0)        

    # if simulated execution
    else:
        replace_in_files(fileslist, sys.argv[3], sys.argv[4], 1, 0)