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File System Exercise: Creating Directory Structure in HtDP Intermediate-Level

Create a file system exercise by defining file and directory structures in HtDP Intermediate-Level language. Learn to use constructors and accessors for files and directories. Implement functions to count files, calculate disk usage, and search for files in the directory tree.

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File System Exercise: Creating Directory Structure in HtDP Intermediate-Level

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  1. Directory-File System Exercise

  2. Figure 44 in HtDP

  3. Dr-Scheme Related Primitives • Data definition • (define-struct file (name size content)) • (define-struct dir (name dirs files)) • Corresponding constructors and accessorsthat are automatically generated • make-file, file-name, file-size, file-content • make-dir, dir-name, dir-dirs, dir-files • Note, define-struct is not available in standard Scheme (R5RS). So, choose the language level as HtPD Intermediate-level or Advanced.

  4. Additional Issues • You do not need to use teach packs (e.g., dir.ss) for this assignment because you are not required to navigate your Windows/UNIX directories. • Use secure shell ssh to log into unixapps1 and sftp to copy files into unixapps1 before executing turnin command.

  5. Function Definitions • Represent figure as EG44 • Define how-many : Number of files • Define du-dir : Disk usage (size) • Submit version in which directory requires 1 unit of storage • Define find? : Determines if a file occurs in the directory tree CS680 Only • Define find : Determines list of file paths if there are multiple occurrences of a file in the directory tree

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