Algorithm (Workflow)

This function, existvolume, is designed to check if a specified volume is mounted on a system running macOS. It returns the full path to the volume's directory if it exists.

Input Parameters

• vname: This is the name of the volume you want to check. It can be a single string or a cell array of strings. If a cell array is provided, the function will return the path of the first existing volume.

Output

• dname: This is the full path to the volume's directory. It always ends with a file separator (filesep). If the volume does not exist, it returns an empty array.

Algorithm Steps

1. The function starts by retrieving the volume name using getfuncparams. If no volume name is provided, it defaults to 'PLATTE LUETH ALL'.
2. If vname is a cell array, the function iterates over each volume name in the array:
• For each volume name, it recursively calls existvolume.
• If a valid directory path is found, it breaks out of the loop and returns the path.
3. If vname is not a cell array, the function checks if the operating system is macOS:
• If not, it throws an error indicating the function is only available on macOS.
4. It constructs the directory path by appending the volume name to '/Volumes/'.
5. It ensures the path ends with a file separator.
6. It checks if the directory exists using exist:
• If the directory does not exist, it sets dname to an empty array.

Example Usage

• existvolume('PLATTE LUETH ALL'): Checks if the volume 'PLATTE LUETH ALL' is mounted and returns its path if it exists.
• existvolume({'PLATTE LUETH ALL2','PLATTE LUETH ALL4','PLATTE LUETH ALL'}): Checks each volume in the list and returns the path of the first one that exists.