object

os

Portable operating-system access predicates.

Author: Paulo Moura

Version: 1:93:3

Date: 2022-05-29

Compilation flags:

static, context_switching_calls

Implements:

public osp

Uses:

list

Aliases:

osp absolute_file_name/2 as expand_path/2

Remarks:

• File path expansion: To ensure portability, all file paths are expanded before being handed to the backend Prolog system.

• Exception terms: Currently, there is no standardization of the exception terms thrown by the different backend Prolog systems.

• B-Prolog portability: The wall_time/1 predicate is not supported.

• JIProlog portability: The file_permission/2 and command_line_arguments/1 predicates are not supported.

• Qu-Prolog portability: The directory_files/2 predicate is not supported.

• Quintus Prolog: The pid/1 and shell/2 predicates are not supported.

• Scryer Prolog: The file_permission/2, cpu_time/1, and wall_time/1 predicates are not supported.

• XSB portability: The command_line_arguments/1 predicate is not supported.

Inherited public predicates:

 absolute_file_name/2  change_directory/1  command_line_arguments/1  copy_file/2  cpu_time/1  date_time/7  decompose_file_name/3  decompose_file_name/4  delete_directory/1  delete_file/1  directory_exists/1  directory_files/2  directory_files/3  ensure_directory/1  ensure_file/1  environment_variable/2  file_exists/1  file_modification_time/2  file_permission/2  file_size/2  internal_os_path/2  is_absolute_file_name/1  make_directory/1  make_directory_path/1  null_device_path/1  operating_system_type/1  path_concat/3  pid/1  rename_file/2  shell/1  shell/2  sleep/1  temporary_directory/1  time_stamp/1  wall_time/1  working_directory/1

Public predicates

(no local declarations; see entity ancestors if any)

Protected predicates

(no local declarations; see entity ancestors if any)

Private predicates

(no local declarations; see entity ancestors if any)

Operators

(none)

See also

os_types