#!/usr/bin/env python3"""Make backend documentation""" import osimport subprocess marker = "<!--- autogenerated options"start = marker + " start"stop = marker + " stop" def find_backends():    """Return a list of all backends"""    return [ x for x in os.listdir("backend") if x not in ("all",) ] def output_docs(backend, out):    """Output documentation for backend options to out"""    out.flush()    subprocess.check_call(["rclone", "help", "backend", backend], stdout=out) def alter_doc(backend):    """Alter the documentation for backend"""    doc_file = "docs/content/"+backend+".md"    if not os.path.exists(doc_file):        raise ValueError("Didn't find doc file %s" % (doc_file,))    new_file = doc_file+"~new~"    altered = False    with open(doc_file, "r") as in_file, open(new_file, "w") as out_file:        in_docs = False        for line in in_file:            if not in_docs:                if start in line:                    in_docs = True                    start_full = start + " - DO NOT EDIT, instead edit fs.RegInfo in backend/%s/%s.go then run make backenddocs -->\n" % (backend, backend)                    out_file.write(start_full)                    output_docs(backend, out_file)                    out_file.write(stop+" -->\n")                    altered = True            if not in_docs:                out_file.write(line)            if in_docs:                if stop in line:                    in_docs = False    os.rename(doc_file, doc_file+"~")    os.rename(new_file, doc_file)    if not altered:        raise ValueError("Didn't find '%s' markers for in %s" % (start, doc_file)) if __name__ == "__main__":    failed, success = 0, 0    for backend in find_backends():        try:            alter_doc(backend)        except Exception as e:            print("Failed adding docs for %s backend: %s" % (backend, e))            failed += 1        else:            success += 1    print("Added docs for %d backends with %d failures" % (success, failed))