mirror of
https://github.com/Next-Flip/Momentum-Firmware.git
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Merge commit '85e5642b2ab537ae9e1c0bccac8add975b8a9ed1' into mntm-dev
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Willy-JL
312
applications/system/js_app/packages/fz-sdk/storage/index.d.ts
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312
applications/system/js_app/packages/fz-sdk/storage/index.d.ts
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/**
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* Module for accessing the filesystem
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* @version Added in JS SDK 0.1
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* @module
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*/
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/**
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* File readability mode:
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* - `"r"`: read-only
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* - `"w"`: write-only
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* - `"rw"`: read-write
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* @version Added in JS SDK 0.1
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*/
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export type AccessMode = "r" | "w" | "rw";
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/**
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* File creation mode:
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* - `"open_existing"`: open file or fail if it doesn't exist
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* - `"open_always"`: open file or create a new empty one if it doesn't exist
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* - `"open_append"`: open file and set r/w pointer to EOF, or create a new one if it doesn't exist
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* - `"create_new"`: create new file or fail if it exists
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* - `"create_always"`: truncate and open file, or create a new empty one if it doesn't exist
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* @version Added in JS SDK 0.1
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*/
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export type OpenMode = "open_existing" | "open_always" | "open_append" | "create_new" | "create_always";
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/**
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* Standard UNIX timestamp
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* @version Added in JS SDK 0.1
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*/
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export type Timestamp = number;
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/**
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* File information structure
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* @version Added in JS SDK 0.1
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*/
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export declare class FileInfo {
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/**
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* Full path (e.g. "/ext/test", returned by `stat`) or file name
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* (e.g. "test", returned by `readDirectory`)
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* @version Added in JS SDK 0.1
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*/
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path: string;
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/**
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* Is the file a directory?
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* @version Added in JS SDK 0.1
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*/
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isDirectory: boolean;
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/**
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* File size in bytes, or 0 in the case of directories
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* @version Added in JS SDK 0.1
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*/
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size: number;
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/**
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* Time of last access as a UNIX timestamp
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* @version Added in JS SDK 0.1
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*/
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accessTime: Timestamp;
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}
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/**
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* Filesystem information structure
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* @version Added in JS SDK 0.1
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*/
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export declare class FsInfo {
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/**
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* Total size of the filesystem, in bytes
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* @version Added in JS SDK 0.1
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*/
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totalSpace: number;
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/**
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* Free space in the filesystem, in bytes
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* @version Added in JS SDK 0.1
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*/
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freeSpace: number;
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}
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// file operations
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/**
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* File class
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* @version Added in JS SDK 0.1
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*/
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export declare class File {
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/**
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* Closes the file. After this method is called, all other operations
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* related to this file become unavailable.
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* @returns `true` on success, `false` on failure
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* @version Added in JS SDK 0.1
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*/
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close(): boolean;
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/**
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* Is the file currently open?
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* @version Added in JS SDK 0.1
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*/
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isOpen(): boolean;
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/**
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* Reads bytes from a file opened in read-only or read-write mode
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* @param mode The data type to interpret the bytes as: a `string` decoded
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* from ASCII data (`"ascii"`), or an `ArrayBuf` (`"binary"`)
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* @param bytes How many bytes to read from the file
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* @returns an `ArrayBuf` if the mode is `"binary"`, a `string` if the mode
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* is `ascii`. The number of bytes that was actually read may be
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* fewer than requested.
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* @version Added in JS SDK 0.1
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*/
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read<T extends ArrayBuffer | string>(mode: T extends ArrayBuffer ? "binary" : "ascii", bytes: number): T;
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/**
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* Writes bytes to a file opened in write-only or read-write mode
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* @param data The data to write: a string that will be ASCII-encoded, or an
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* ArrayBuf
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* @returns the amount of bytes that was actually written
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* @version Added in JS SDK 0.1
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*/
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write(data: ArrayBuffer | string): number;
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/**
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* Moves the R/W pointer forward
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* @param bytes How many bytes to move the pointer forward by
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* @returns `true` on success, `false` on failure
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* @version Added in JS SDK 0.1
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*/
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seekRelative(bytes: number): boolean;
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/**
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* Moves the R/W pointer to an absolute position inside the file
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* @param bytes The position inside the file
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* @returns `true` on success, `false` on failure
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* @version Added in JS SDK 0.1
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*/
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seekAbsolute(bytes: number): boolean;
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/**
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* Gets the absolute position of the R/W pointer in bytes
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* @version Added in JS SDK 0.1
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*/
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tell(): number;
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/**
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* Discards the data after the current position of the R/W pointer in a file
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* opened in either write-only or read-write mode.
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* @returns `true` on success, `false` on failure
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* @version Added in JS SDK 0.1
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*/
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truncate(): boolean;
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/**
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* Reads the total size of the file in bytes
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* @version Added in JS SDK 0.1
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*/
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size(): number;
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/**
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* Detects whether the R/W pointer has reached the end of the file
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* @version Added in JS SDK 0.1
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*/
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eof(): boolean;
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/**
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* Copies bytes from the R/W pointer in the current file to the R/W pointer
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* in another file
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* @param dest The file to copy the bytes into
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* @param bytes The number of bytes to copy
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* @returns `true` on success, `false` on failure
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* @version Added in JS SDK 0.1
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*/
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copyTo(dest: File, bytes: number): boolean;
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}
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/**
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* Opens a file
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* @param path The path to the file
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* @param accessMode `"r"`, `"w"` or `"rw"`; see `AccessMode`
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* @param openMode `"open_existing"`, `"open_always"`, `"open_append"`,
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* `"create_new"` or `"create_always"`; see `OpenMode`
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* @returns a `File` on success, or `undefined` on failure
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* @version Added in JS SDK 0.1
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*/
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export declare function openFile(path: string, accessMode: AccessMode, openMode: OpenMode): File | undefined;
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/**
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* Detects whether a file exists
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* @param path The path to the file
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* @returns `true` on success, `false` on failure
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* @version Added in JS SDK 0.1
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*/
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export declare function fileExists(path: string): boolean;
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// directory operations
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/**
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* Reads the list of files in a directory
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* @param path The path to the directory
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* @returns Array of `FileInfo` structures with directory entries,
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* or `undefined` on failure
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* @version Added in JS SDK 0.1
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*/
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export declare function readDirectory(path: string): FileInfo[] | undefined;
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/**
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* Detects whether a directory exists
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* @param path The path to the directory
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* @version Added in JS SDK 0.1
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*/
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export declare function directoryExists(path: string): boolean;
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/**
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* Creates an empty directory
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* @param path The path to the new directory
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* @returns `true` on success, `false` on failure
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* @version Added in JS SDK 0.1
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*/
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export declare function makeDirectory(path: string): boolean;
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// common (file/dir) operations
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/**
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* Detects whether a file or a directory exists
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* @param path The path to the file or directory
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* @version Added in JS SDK 0.1
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*/
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export declare function fileOrDirExists(path: string): boolean;
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/**
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* Acquires metadata about a file or directory
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* @param path The path to the file or directory
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* @returns A `FileInfo` structure or `undefined` on failure
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* @version Added in JS SDK 0.1
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*/
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export declare function stat(path: string): FileInfo | undefined;
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/**
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* Removes a file or an empty directory
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* @param path The path to the file or directory
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* @returns `true` on success, `false` on failure
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* @version Added in JS SDK 0.1
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*/
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export declare function remove(path: string): boolean;
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/**
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* Removes a file or recursively removes a possibly non-empty directory
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* @param path The path to the file or directory
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* @returns `true` on success, `false` on failure
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* @version Added in JS SDK 0.1
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*/
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export declare function rmrf(path: string): boolean;
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/**
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* Renames or moves a file or directory
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* @param oldPath The old path to the file or directory
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* @param newPath The new path that the file or directory will become accessible
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* under
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* @returns `true` on success, `false` on failure
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* @version Added in JS SDK 0.1
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*/
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export declare function rename(oldPath: string, newPath: string): boolean;
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/**
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* Copies a file or recursively copies a possibly non-empty directory
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* @param oldPath The original path to the file or directory
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* @param newPath The new path that the copy of the file or directory will be
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* accessible under
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* @version Added in JS SDK 0.1
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*/
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export declare function copy(oldPath: string, newPath: string): boolean;
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/**
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* Fetches generic information about a filesystem
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* @param filesystem The path to the filesystem (e.g. `"/ext"` or `"/int"`)
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* @version Added in JS SDK 0.1
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*/
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export declare function fsInfo(filesystem: string): FsInfo | undefined;
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/**
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* Chooses the next available filename with a numeric suffix in a directory
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*
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* ```
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* "/ext/example_dir/example_file123.txt"
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* \______________/ \__________/\_/\__/
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* dirPath fileName | |
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* | +---- fileExt
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* +------- selected by this function
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* ```
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*
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* @param dirPath The directory to look in
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* @param fileName The base of the filename (the part before the numeric suffix)
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* @param fileExt The extension of the filename (the part after the numeric suffix)
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* @param maxLen The maximum length of the filename with the numeric suffix
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* @returns The base of the filename with the next available numeric suffix,
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* without the extension or the base directory.
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* @version Added in JS SDK 0.1
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*/
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export declare function nextAvailableFilename(dirPath: string, fileName: string, fileExt: string, maxLen: number): string;
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// path operations that do not access the filesystem
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/**
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* Determines whether the two paths are equivalent. Respects filesystem-defined
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* path equivalence rules.
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* @version Added in JS SDK 0.1
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*/
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export declare function arePathsEqual(path1: string, path2: string): boolean;
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/**
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* Determines whether a path is a subpath of another path. Respects
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* filesystem-defined path equivalence rules.
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* @param parentPath The parent path
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* @param childPath The child path
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* @version Added in JS SDK 0.1
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*/
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export declare function isSubpathOf(parentPath: string, childPath: string): boolean;
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// virtual mount api for mounting disk images formatted as FatFs (exFAT, FAT32, FAT16...)
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/**
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* Initialize virtual mount api with disk image at given path.
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* Errors on failure.
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* @param parentPath Path to disk image file
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*/
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export declare function virtualInit(path: string): void;
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/**
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* Mount selected disk image at /mnt path.
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* Errors on failure.
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*/
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export declare function virtualMount(): void;
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/**
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* Deinitialize virtual mount api.
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* Errors on failure.
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*/
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export declare function virtualQuit(): void;
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