ppms.file_utils

Die nachfolgenden Inhalte sind nur in englischer Sprache verfügbar.

The file_utils module is helpful when you want to write a function that needs to write files on the server. Check the user_interface package for functions for storing/reading files between server and client.

Functions

Function	Parameters	Return Value	Description
ask_if_name_okay`(name)`	name: The filename you want to use	`True` or `False`	Shows a dialog message that asks the user if the given `name` is okay. Should be called with the return value from `create_valid_filename`
create_valid_filename`(proposed_filename, convert_spaces=True, platform=None)`	proposed_filename: The filename you want to use convert_spaces: If `True`, spaces will be converted into underscores platform: The platform on which the file should later be created. Valid values are those described for sys.platform or None if the current server operating system is used.	Returns a sanitized version of the input for the given system or None if the filename isn't valid.	Sanitize a filename and make it valid for the operating system
reset_linux_file_permissions`(file_path)`	file_path: The path to a file the permissions for which you want to be reset	`True` or `False` depending on whether the operation succeeded	Sets the "read other" and "write other" flags for the given file path
reset_permissions`(file_path, os_name=None)`	file_path: The path to a file the permissions for which you want to be reset os_name: The name of the operating system to decide which code to run. Valid values are those described for os.name	`True` or `False` depending on whether the operation succeeded	This function calls either `reset_linux_file_permissions` or `reset_windows_file_permissions` depending on the operating system PLANTA is running on to reset the permissions of the file at the given path. This function is useful when PLANTA is running with a privileged user and you want to write files that can be read by non-privileged users.
reset_windows_file_permissions`(file_path)`	file_path: The path to a file the permissions for which you want to be reset	`True` or `False` depending on whether the operation succeeded	Resets the ACL for the given file path

Examples

Using file_utils to create a valid filename from user input

PY

from ppms.file_utils import create_valid_filename, ask_if_name_okay


def query_user_for_filename():
    ppms.ui_message_box('Please enter a filename', number_of_input=1)
    msg = ppms.msg_pop()
    user_input = msg.get_input()[0]
    
    return user_input

sanitized_filename = None
while sanitized_filename is None:
    user_input = query_user_for_filename()
    sanitized_filename = create_valid_filename(proposed_filename=user_input)

    if sanitized_filename is not None:
        if sanitized_filename == user_input:  # If the user already entered valid input we can stop asking
            break
        elif ask_if_name_okay(name=sanitized_filename):  # If the sanitized name is different from the user input we ask for permission
            break
        
        sanitized_filename = None  # We end up here when the user isn't okay with the sanitized input
        
with open(sanitized_filename, 'w') as f:
    f.write('...')