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Diffstat (limited to '')
-rw-r--r-- | plug-ins/script-fu/ftx/listhome.scm | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/plug-ins/script-fu/ftx/listhome.scm b/plug-ins/script-fu/ftx/listhome.scm new file mode 100644 index 0000000..1fa8d14 --- /dev/null +++ b/plug-ins/script-fu/ftx/listhome.scm @@ -0,0 +1,58 @@ +; listhome.scm +; Sample usage of TinyScheme Extension +; This simple program lists the directory entries on the +; user's home directory. + +; It uses the following TinyScheme Extension functions: +; getenv +; Used to get HOME environment variable. +; open-dir-stream +; Used to open directory stream. +; read-dir-entry +; Used to read directory entries. +; close-dir-entry +; Used at the end, to close directory stream when done. + +; check that extensions are enabled +(if (not (defined? 'load-extension)) + (begin + (display "TinyScheme has extensions disabled. Enable them!!") + (newline) + (quit))) + +; load TinyScheme extension +(load-extension "tsx-1.1/tsx") + +; check that the necessary functions are available (the user +; might have removed some functionality...) +(if (or + (not (defined? 'getenv)) + (not (defined? 'dir-open-stream)) + (not (defined? 'dir-read-entry)) + (not (defined? 'dir-close-stream))) + (begin + (display "Some necessary functions are not available. Exiting!") + (newline) + (quit))) + +; get user's home dir from HOME environment var +(define homedir (getenv "HOME")) +(display "Listing contents of ") (display homedir) (newline) + +; create directory stream to read dir entries +(define dirstream (dir-open-stream homedir)) +(if (not dirstream) + (begin + (display "Unable to open home directory!! Check value of HOME environment var.") + (quit))) + +(let listentry ((entry (dir-read-entry dirstream))) + (if (eof-object? entry) + #t + (begin + (display entry) + (newline) + (listentry (dir-read-entry dirstream))))) + +(dir-close-stream dirstream) + |