well, a few bugs were in that one, concerning the terminal applications
mostly, should be fine now.

-- 
Matthew Love

;-*-sawfish-*-
;; sawfish-menu-generator

;; fdo-desktop-file-parsing

(defun desktop-file-p (directory-file)
  (let ((this-file (open-file directory-file 'read)))
    (string= (read-line this-file) "[Desktop Entry]\012")))

(defun desktop-group-p (instring)
  (string= (substring instring 0 1) "["))

(defun desktop-skip-line-p (instring)
  (or (not instring)
      (string= (substring instring 0 1) "#")
      (string= (substring instring 0 1) "\012")))

(defun get-desktop-key (instring)
  (if (> (length instring) 3)
      (let ((break-number (get-key-break instring "=")))
        (if (< break-number 20)
            (substring instring 0 break-number)))))

(defun get-desktop-value (instring)
  (if (> (length instring) 3)
      (let ((break-number (get-key-break instring "=")))
        (if (< break-number 20)
            (substring instring (+ 1 break-number))))))

(defun get-desktop-group (instring)
  (substring instring 1 (- (length instring) 2)))

(defun get-key-break (instring key)
  (if instring
      (do ((mcount 0 (1+ mcount))) 
          ((or (string= (substring instring mcount (+ mcount 1)) "\n")
               (string= (substring instring mcount (+ mcount 1)) key)
               (= mcount 398)) mcount))))

(defun parse-desktop-file-line (infile)
  (if (setq this-line (read-line infile))
      (if (not (desktop-skip-line-p this-line))
          (cons
           (if (desktop-group-p this-line)
               (get-desktop-group this-line)
             (if (not (desktop-group-p this-line))
                 (cons (get-desktop-key this-line) (get-desktop-value 
this-line))))
           (parse-desktop-file-line infile))
        (parse-desktop-file-line infile))))

(defun parse-desktop-file (infile)
  (unless (not (desktop-file-p infile))
    (let ((d-file (open-file infile 'read)))
      (parse-desktop-file-line d-file))))

;; generic functions

(defun map-desk-files (in-desk-files in-directory)
  (if in-desk-files
      (cons (expand-file-name (car in-desk-files) in-directory)
            (map-desk-files (cdr in-desk-files) in-directory))))
    
(defun map-dir-files (directories)
  (if directories
      (if (file-directory-p (car directories))
          (let ((desk0 (directory-files (car directories))))
            (cons (map-desk-files desk0 (car directories)) 
                  (map-dir-files (cdr directories))))
        (map-dir-files (cdr directories)))))

(defun flatten (input)
  (cond ((null input) nil)
        ((atom input) (list input))
        (t (append (flatten (car input))
                   (flatten (cdr input))))))

(defun trim-end (string)
  (cond
   ((string= (aref string (- (length string) 3)) 37)
    (substring string 0 (- (length string) 4)))
   (string
     (substring string 0 (- (length string) 1)))))

(defun find-lang-string ()
  (cond
   ((getenv "LC_ALL")
    (let ((mlang (getenv "LC_ALL")))
      (if (> (length mlang) 2)
          (substring mlang 0 5)
        (substring mlang 0 2))))
   ((getenv "LANG")
    (let ((mlang (getenv "LANG")))
      (if (> (length mlang) 2)
          (substring mlang 0 5)
        (substring mlang 0 2))))
   ((getenv "LANG_MESSAGES")
    (let ((mlang (getenv "LANG_MESSAGES")))
      (if (> (length mlang) 2)
          (substring mlang 0 5)
        (substring mlang 0 2))))
   ((getenv "LANG_MESSAGES")
    (let ((mlang (getenv "LANG_MESSAGES")))
      (if (> (length mlang) 2)
          (substring mlang 0 5)
        (substring mlang 0 2))))))

;; Variables that can be set in .sawfish[/]rc    

(if (not (boundp 'desktop-directory))
    (defvar desktop-directory '("/usr/share/applications")))

(if (not (boundp 'my-lang-string))
    (defvar my-lang-string (find-lang-string)))

(if my-lang-string
    (define name-string "Name["))

(if (not (boundp 'ignore-no-display))
    (defvar ignore-no-display '()))

(if (not (boundp 'want-alphabetize))
    (defvar want-alphabetize 't))

(if (not (boundp 'my-term-string))
    (defvar my-term-string "xterm -e "))

(if (not (boundp 'use-fdo-menu))
    (defvar use-fdo-menu 't))

;; The Master Category List

(defvar menu-cat-alist
  '(("Desktop" .  ("X-Desktop" "X-DesktopApplets" "X-DesktopCountry" \
                   "DesktopSettings" "GNOME" "KDE" "X-GNOME-PersonalSettings" \
                   "X-Xfce-Toplevel"))
    ("Personal" . ("X-Personal" "X-PersonalUtility" "Calendar" 
"ContactManagement"))
    ("Office" . ("Office" "WordProcessor" "Presentation" "X-Document" \
                 "TextEditor" "SpreadSheet" "Calculator" "X-Calculate" \
                 "Chart" "FlowChart" "Finance"))
    ("Internet" . ("Telephony" "Network" "Dialup" "VideoConference" \
                   "RemoteAccess" "News" "HamRadio" "FileTransfer" \
                   "X-Internet" "P2P" "Email" "WebBrowser" "IRCClient" "Chat" \
                   "InstantMessaging" "Chat" "WebDevelopment"))
    ("Games" . ("Game" "ActionGame" "AdventureGame" "ArcadeGame" "BoardGame" 
"Emulator"\
                "BlocksGame" "CardGame" "KidsGame" "LogicGame" "RolePlaying" 
"Simulation"))
    ("Graphics" . ("RasterGraphics" "VectorGraphics" "X-GraphicUtility" \
                   "2DGraphics" "3dGraphics" "3DGraphics" "Scanning" "OCR" 
"Photography" \
                   "Viewer" "Publishing" "Art" "ImageProcessing"))
    ("Media" . ("AudioVideo" "Audio", "Video" "Midi" "Mixer" "Sequencer" 
"Tuner" \
                "TV" "AudioVideoEditing" "Player" "Recorder" "DiscBurning" 
"Music"))
    ("Science" . ("Science" "Astrology" "ArtificialIntelligence" "Astronomy" \
                  "Biology" "Chemistry" "ComputerScience" "DataVisualization" \
                  "Electricity" "Robotics" "Physics" "Math" "Education" 
"Geography"))
    ("Development" . ("GUIDesigner" "IDE" "Profiling" "RevisionControl" \
                      "ProjectManagement" "Translation" "GTK" "Development" \
                      "Qt" "Development" "Documentation"))
    ("Utility" . ("X-SystemMemory" "Security" "Utility" \
                  "X-SetupEntry" "X-SetupUtility" "X-SystemMemory" \
                  "TextTools" "TelephonyTools" "Accessibility" "Clock" \
                  "ConsoleOnly"))
    ("Filesystem" .  ("X-FileSystemFind" "X-FileSystemUtility" "Archiving" \
                      "FileManager" "X-FileSystemMount" "Compression"))
    ("System" . ("X-SystemSchedule" "System" "X-SystemMemory" \
                 "TerminalEmulator" "Dictionary" "Puppy" "Printing" "Monitor" 
"Security"))
    ("Settings" . ("Settings" "HardwareSettings" "PackageManager"))))

;; Get the correct Name value based on language settings
(defun find-lang-in-desktop-file (fdo-list)
  (if (assoc (concat name-string my-lang-string "]") fdo-list)
      (concat name-string my-lang-string "]")
    (if (assoc (concat name-string (substring my-lang-string 0 2) "]") fdo-list)
        (concat name-string (substring my-lang-string 0 2) "]")
      "Name")))

;; generate a saw-fish menu entry from a .desktop file
(defun generate-menu-entry (desk-file)
  (if (and (not (file-directory-p desk-file))
           (desktop-file-p desk-file))
      (let ((fdo-list (parse-desktop-file desk-file)))
        (if (not (string= (cdr (assoc "NoDisplay" fdo-list)) "true\n"))
            (cons (parse-cat-list (build-cat-list (trim-end (cdr (assoc 
"Categories" fdo-list)))))
                  (cons (trim-end (cdr (assoc (find-lang-in-desktop-file 
fdo-list) fdo-list)))
                        (if (string= (cdr (assoc "Terminal" fdo-list)) 
"true\012")
                            (cons (list 
                                   'system (concat my-term-string (trim-end 
(cdr (assoc "Exec" fdo-list))) " &")))
                          (cons (list 'system (concat (trim-end (cdr (assoc 
"Exec" fdo-list))) " &"))))))))))

;; Functions for categories
(defun fix-sub-cats (cat-list loc-list)
  (if cat-list
      (let ((cat-val (car cat-list)))
        (if (assoc cat-val loc-list)
            (cons (cdr (assoc cat-val loc-list))
                  (fix-sub-cats cat-list (remove (assoc cat-val loc-list) 
loc-list)))
          (fix-sub-cats (cdr cat-list) loc-list)))))

;; Associate values from the Master Category list with sub-categories from file
(defun fix-cats (cat-list)
  (if cat-list
      (let ((cat-val (car (car cat-list)))
            (c-list (fix-sub-cats (car cat-list) *loc-menu*)))
        (if (car c-list)
            (cons (cons cat-val c-list) (fix-cats (cdr cat-list)))
          (fix-cats (cdr cat-list))))))

;; Convert a Categories key value from ; delineated records to a list
(defun build-cat-list (line) 
  (if (> (length line) 1)
      (let ((this-cat (prin1-to-string (read-from-string line))))
        (cons this-cat 
              (if (< (length this-cat) (length line))
                  (build-cat-list (substring line (+ 1 (length this-cat)))))))))

;; Helper for (parse-desk-line)
;; Determine best category to use... :|
(defun parse-cat-list (cat-list)
  (if (cdr cat-list)
      (let ((this-cat (car cat-list)))
        (if (or
             (string= this-cat "GNOME")
             (string= this-cat "GTK")
             (string= this-cat "KDE")
             (string= this-cat "Qt")
             (string= this-cat "X-XFCE")
             (string= this-cat "Application"))
            (parse-cat-list (cdr cat-list))
          this-cat))
    (car cat-list)))

;; Alphabetize the entries in the category menus
(defun alphabetize-entries (saw-menu)
  (if saw-menu
      (cons (cons (car (car saw-menu)) 
                  (sort (cdr (car saw-menu)) string<)) 
            (alphabetize-entries (cdr saw-menu)))))

;; Update the menu
(define (update-sawfish-menu)
  (unless (not use-fdo-menu)
    (setq *loc-menu* nil)
    (defvar desk-files (flatten (map-dir-files desktop-directory)))
    (mapc (lambda (x)
            (setq *loc-menu* (append *loc-menu* (list (generate-menu-entry 
x))))) desk-files)
    (if want-alphabetize
        (setq apps-menu (alphabetize-entries (fix-cats menu-cat-alist)))
      (setq apps-menu (fix-cats menu-cat-alist)))))

;; END-FILE

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