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Steven Fisher
Steven Fisher
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What's the right way to tell if a file is contained within a given directory, or a subdirectory thereof?

I want something like:

if ([directoryPath contains: filePath]) { // file is in directory, or in a subdirectory of directory. }

Example:

ContainerPath: /Users/sfisher/Library/Application Support/iPhone Simulator/5.1/Applications/89A57CCB-250D-4D10-B913-EA456004B431/AppName.app

Not matching: /Users/sfisher/Library/Application Support/iPhone Simulator/5.1/Applications/89A57CCB-250D-4D10-B913-EA456004B431/Documents/db/Sample Data

Matching: /Users/sfisher/Library/Application Support/iPhone Simulator/5.1/Applications/89A57CCB-250D-4D10-B913-EA456004B431/AppName.app/Samples/1

I could convert everything to strings (including appending a "/" to the container directory) and check for a string match, but it seems there should be a built-in method for this.

What's the right way to tell if a file is contained within a given directory, or a subdirectory thereof?

Example:

ContainerPath: /Users/sfisher/Library/Application Support/iPhone Simulator/5.1/Applications/89A57CCB-250D-4D10-B913-EA456004B431/AppName.app

Not matching: /Users/sfisher/Library/Application Support/iPhone Simulator/5.1/Applications/89A57CCB-250D-4D10-B913-EA456004B431/Documents/db/Sample Data

Matching: /Users/sfisher/Library/Application Support/iPhone Simulator/5.1/Applications/89A57CCB-250D-4D10-B913-EA456004B431/AppName.app/Samples/1

I could convert everything to strings (including appending a "/" to the container directory) and check for a string match, but it seems there should be a built-in method for this.

What's the right way to tell if a file is contained within a given directory, or a subdirectory thereof?

I want something like:

if ([directoryPath contains: filePath]) { // file is in directory, or in a subdirectory of directory. }

Example:

ContainerPath: /Users/sfisher/Library/Application Support/iPhone Simulator/5.1/Applications/89A57CCB-250D-4D10-B913-EA456004B431/AppName.app

Not matching: /Users/sfisher/Library/Application Support/iPhone Simulator/5.1/Applications/89A57CCB-250D-4D10-B913-EA456004B431/Documents/db/Sample Data

Matching: /Users/sfisher/Library/Application Support/iPhone Simulator/5.1/Applications/89A57CCB-250D-4D10-B913-EA456004B431/AppName.app/Samples/1

I could convert everything to strings (including appending a "/" to the container directory) and check for a string match, but it seems there should be a built-in method for this.

Source Link
Steven Fisher
Steven Fisher
  • 44.9k
  • 21
  • 142
  • 194

How do I tell if a file is contained in a directory?

What's the right way to tell if a file is contained within a given directory, or a subdirectory thereof?

Example:

ContainerPath: /Users/sfisher/Library/Application Support/iPhone Simulator/5.1/Applications/89A57CCB-250D-4D10-B913-EA456004B431/AppName.app

Not matching: /Users/sfisher/Library/Application Support/iPhone Simulator/5.1/Applications/89A57CCB-250D-4D10-B913-EA456004B431/Documents/db/Sample Data

Matching: /Users/sfisher/Library/Application Support/iPhone Simulator/5.1/Applications/89A57CCB-250D-4D10-B913-EA456004B431/AppName.app/Samples/1

I could convert everything to strings (including appending a "/" to the container directory) and check for a string match, but it seems there should be a built-in method for this.