;; jde-ant.el --- Use Apache Ant to build your JDE projects

;; $Revision: 1.4 $ $Date: 2003/01/18 05:48:43 $ 

;;
;; Author: Jason Stell | jason.stell@globalone.net
;; Author: Kevin A. Burton ( burton@openprivacy.org )
;; Created: 19 Oct 2000
;; Version 1.4.4
;;

;; This file is not part of Emacs

;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; published by the Free Software Foundation; either version 2, or (at
;; your option) any later version.

;; This program is distributed in the hope that it will be useful, but
;; WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;; General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with this program; see the file COPYING.  If not, write to
;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;; Commentary:
;; This file defines jde-ant-build and some helper functions.
;; jde-ant-build uses the specified ant program/shell script to 
;; execute a specified build file (in the project root). 
;; 
;;
;; TODO:
;;
;; Notes:
;; -- The JDE (Java Development Environment for Emacs) can be
;;    downloaded at http://sunsite.auc.dk/jde/
;;
;; -- Apache Ant is a Java & XML build system that can be downloaded 
;;    at http://jakarta.apache.org/ant/
;;
;;
;;; History:
;;
;; - Version 1.4.4 Thu Jan 17 2002 03:51 PM (burton@openprivacy.org):
;;
;;    - We now have `jde-ant-build-hook' that runs hooks after a build is
;;      started.
;;
;; - Version 1.4.3 Thu Jan 17 2002 03:37 PM (burton@openprivacy.org): 
;;
;;    - fixed a bug with target completion.  We were not using initial-input
;;      correctly.
;;
;;    - fixed a bug with jde-ant-build-classpath which wasn't using ant-home
;;      correctly.  (Thanks to Javier S. Lopez)
;; 
;; - Version 1.4.2 Wed Jan 16 2002 05:46 PM (burton@openprivacy.org): added
;; `jde-ant-use-global-classpath' (which is disabled by default) so that the
;; `jde-global-classpath' can be used.
;; 
;; -- Version 1.3 (19 June 2001)
;;    : Addition of jde-ant-projecthelp to display list of targets for
;;      the current buildfile.
;; -- Version 1.2 (4 June 2001) 
;;    : Addition of jde-ant-read-buildfile option to prompt for the buildfile 
;;      name -- contributed by Rob Shaw <shaw@servidium.com>
;;    : Various Bug fixes contributed by Rob Shaw <shaw@servidium.com> 
;;        - The setting of the system property in a format other
;;          than -Dname=value had the side effect of negating the -emacs 
;;          command line argument.
;;        - The setting of the current directory to the location of the 
;;          JDE project file is now taking place when
;;          jde-ant-enable-find is nil.
;;        - The ant target is now the last thing to be appended to
;;          ant command to avoid any possible confusion for ANT
;;          as to what is the desired target.
;; -- Version 1.2b2 (25 May 2001) 
;;    : Fix to properly use the -find <buildfile> Ant switch--contributed
;;      by Rob Shaw <shaw@servidium.com>.
;; -- Version 1.2b1 (23 May 2001) 
;;    : Added jde-ant-enable-find custom flag to use the -find switch
;;      available in Ant. This overrides the requirement for a JDE
;;      project file
;;    : Fixed minor bug missing whitespace before -buildfile switch
;;      when building the ant compile command
;; -- Version 1.1 (20 October 2000)
;;    : Added interactive prompts (optional, based on customizable
;;      toggles) for Ant target and additional args. Removed the 
;;      jde-ant-target custom variable, since this is really
;;      represented by the default target in the build file.
;;    : The -f switch seems to be causing problems. Removed it from
;;      the default jde-ant-args.
;;    : Basic changes to the way the ant command is assembled.
;;
;; -- Version 1.0 (19 October 2000)
;;    Initial Version
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(defgroup jde-ant nil
  "JDE Ant"
  :group 'jde
  :prefix "jde-ant-")

;;; start of Douglas WF Acheson mod
;;; The next three custom variables and defun added by Douglas WF Acheson to
;;; allow a user to select how ant is invoked, either by script or via Java

(defcustom jde-ant-invocation-method (list "Script")
  "*Specifies how to invoke ant. Ant can be invoked in one of three
ways. The first is via the ant script/program that comes with ant.
The second is via java and the third is via the Ant Server." 
  :group 'jde-ant
  :type '(list
           (radio-button-choice
	     (const "Script")
	     (const "Java")
             (const "Ant Server"))))

(defcustom jde-ant-home ""
  "*Directory where ant is installed."
  :group 'jde-ant
  :type  'file)

(defcustom jde-ant-user-jar-files nil
  "*Specifies jar files that hold user-defined tasks."
  :group 'jde-ant
  :type '(repeat (file :tag "Path")))

(defcustom jde-ant-program "ant"
  "*Specifies name of ant program/script."
 :group 'jde-ant
 :type 'string)

(defcustom jde-ant-args "-emacs"
  "*Specifies arguments to be passed to make program."
  :group 'jde-ant
  :type 'string)

(defcustom jde-ant-buildfile "build.xml"
  "*Specifies the default buildfile to use."
  :group 'jde-ant
  :type 'string)

(defcustom jde-ant-read-buildfile nil
"*Specify whether to prompt for a buildfile. If non-nil, the jde-ant-build
command prompts you for an ant buildfile.  Note that when `jde-ant-enable-find'
is enable the value entered for `jde-ant-read-buildfile' is used as a
default. If no value is entered, or the file is non-existent, or is a
directory, the code tries to find the buildfile."

  :group 'jde-ant
  :type 'boolean)

(defcustom jde-ant-read-target nil
"*Specify whether to prompt for a build target. If non-nil, the 
jde-ant-build command prompts you for an ant target."
  :group 'jde-ant
  :type 'boolean)

(defvar jde-ant-interactive-buildfile nil
  "Defauilt buildfile to use when prompting interactively.")

(defvar jde-ant-interactive-target-history nil
  "History of targets entered in the minibuffer.")

(defcustom jde-ant-read-args nil
"*Specify whether to prompt for additional arguments to pass to ant. If
non-nil, the jde-ant-build command prompts you for the additional arguments."
  :group 'jde-ant
  :type 'boolean)

;; (defvar jde-ant-interactive-args-history nil
;; "History of targets entered in the minibuffer.")

(defvar jde-ant-buildfile-history nil
 "History of targets entered in the minibuffer.")

(defvar jde-ant-passed-security-exception nil
  "This variable is used to indicate that we have passed the
java.lang.SecurityException in the output. The JDESecurityManager throws an
exception when ANT tries exiting the JVM using System.exit(0). This exception
causes an stack trace in the compilation buffer. This variable is used to
indicate the start of the exception, therefore no more output should be
inserted into the buffer")

(defvar jde-ant-build-status nil
  "Used to indicated the status of build, success or failure")

 
(defcustom jde-ant-enable-find nil
"*Specify whether jde-ant find the build.xml file based on your current
directory. If non-nil, we will search up the directory hierarchy from the
current directory for the build definition file. Also note that, if non-nil,
this will relax the requirement for an explicit jde project file.  If
`jde-ant-read-buildfile' is enable that value is used as a default if valid."
   :group 'jde-ant
   :type 'boolean)

(defcustom jde-ant-complete-target t
  "*Specify whether to enable completion of build target names in the
minibuffer.

If non-nil, the jde-ant-build command allows you to use tab completion
in the minibuffer to specify the build target name.  This list of
valid build targets is determined by parsing the Ant build file.  This
option has no effect if jde-ant-read-target is nil."
  :group 'jde-ant
  :type 'boolean)

(defcustom jde-ant-use-global-classpath nil
  "*Specify whether to enable use of `jde-global-classpath' when running jde-ant."
  :group 'jde-ant
  :type 'boolean)

(defcustom jde-ant-target-regexp "<\\s-*target\\s-[^...]*?name\\s-*=\\s-*\"\\s-*\\([^\"]+\\)"
  "*Regular expression used to match target names in Ant build files."
  :group 'jde-ant
  :type 'string)

(defcustom jde-ant-build-hook '(jde-compile-finish-kill-buffer
                                jde-compile-finish-refresh-speedbar
                                jde-compile-finish-flush-completion-cache)
  "*List of hook functions run by `jde-ant-build' (see `run-hooks'). Each
function should accept two arguments: the compilation buffer and a string
describing how the compilation finished"
  :group 'jde-ant
  :type 'hook)

(defcustom jde-ant-working-directory ""
  "*Path of the working directory to use in 'ant' build mode. This string must
end in a slash, for example, c:/foo/bar/ or ./ . If this string is empty, the
'ant' build mode uses the current file location as its working directory."
  :group 'jde-ant
  :type 'string)

(defun jde-build-ant-command (target more-args &optional buildfile)
  "Constructs the java ant command. The variable `jde-ant-home' is used
if it is set, otherwise it gets the ant home from the environment
variable ANT_HOME."

  ;;provide a default buildfile.
  (when (null buildfile)
    (setq buildfile jde-ant-buildfile))
    
  (let* ((ant-home (jde-ant-get-ant-home))
         (delimiter (if (string= (car jde-ant-invocation-method) "Java")
                        "'"
                      "\""))
         (ant-command
          (concat 
           (if (string= (car jde-ant-invocation-method) "Script")
	       jde-ant-program)
           (if (string= (car jde-ant-invocation-method) "Java")
               (concat 
		(jde-get-jdk-prog 'java)
		" -classpath "
                (if (and (or (eq system-type 'windows-nt)
			      (eq system-type 'cygwin32))
                         (string-match "sh$" shell-file-name))
                    delimiter)
                (jde-ant-build-classpath)
	    (if (and (or (eq system-type 'windows-nt)
			 (eq system-type 'cygwin32))
		     (string-match "sh$" shell-file-name))
		delimiter)))
	   (if ant-home (concat " -Dant.home=" ant-home))
          (if (string= (car jde-ant-invocation-method) "Java")
              (concat
               " "
               "org.apache.tools.ant.Main")))))
          
    (if (not (string= buildfile ""))
        (setq ant-command 
              (concat ant-command 
                      " -buildfile " delimiter
                      (jde-normalize-path buildfile)
                      delimiter)))

    (if (not (string= jde-ant-args ""))
        (setq ant-command (concat ant-command " " jde-ant-args)))

    (if (and (not (null more-args))
             (not (string= more-args "")))
        (setq ant-command (concat ant-command " " more-args)))

    (if (not (string= target ""))
        (setq ant-command (concat ant-command " " target " ")))
    
    ant-command))

(defun jde-ant-build-classpath()
  "Build the classpath we should use when running ant.  This returns a
classpath normalized with `jde-build-classpath'."

  (let* ((ant-home (jde-ant-get-ant-home))
         classpath)

    (setq classpath (append (list (expand-file-name "lib" ant-home)
                                  (jde-get-tools-jar))
                            jde-ant-user-jar-files))

    (when jde-ant-use-global-classpath
      (setq classpath (append classpath jde-global-classpath)))

    (jde-build-classpath classpath)))

(defun jde-ant-get-ant-home ()
  "Calculate an appropriate ant home."
  (let ((ANT_HOME_ENV (getenv "ANT_HOME"))
	(if (string= "" jde-ant-home)
	    (if ANT_HOME_ENV (jde-normalize-path ANT_HOME_ENV))
	  (jde-normalize-path jde-ant-home)))))

(defun jde-ant-interactive-get-buildfile ()
  "Get a buildfile interactively.  This is used so that code that needs to read
  a buildfile from interactive can share the same type of behavior.  This will
  return a new filename which points to the build.xml file to use."

  (let (buildfile)

    (if jde-ant-read-buildfile
        ;;read the buildfile from the user.

        ;;figure out which directory to execute from.
        (let (prompt-directory prompt-filename)

          (if jde-ant-interactive-buildfile
              (progn
                (setq prompt-directory
                      (file-name-directory jde-ant-interactive-buildfile))
                (setq prompt-filename
                      (file-name-nondirectory jde-ant-interactive-buildfile)))

            (setq prompt-directory (jde-ant-get-default-directory))
            (setq prompt-filename ""))
          
          (setq buildfile
                (read-file-name "Buildfile: " prompt-directory nil t
                                prompt-filename))))
    (if (or (and jde-ant-enable-find (not jde-ant-read-buildfile)) ;enable only
            (and jde-ant-enable-find jde-ant-read-buildfile 
                 (or (null buildfile)   ;no buildfile
                     (string= "" buildfile)
                     (and (file-exists-p buildfile) ;buildfile is a directory
                          (file-directory-p buildfile)))))
        (progn 
          (setq buildfile (jde-ant-find-build-file
                           (jde-ant-get-default-directory)))
          
          (when (null buildfile)
            (error "Could not find Ant build file"))
          
          (when (not (file-exists-p buildfile))
            (error "File does not exist %s " buildfile))))
      
    (if (and (not jde-ant-enable-find)
             (not jde-ant-read-buildfile))
        ;;use the default buildfile.
        (setq buildfile (jde-normalize-path jde-ant-buildfile)))
    buildfile))

;;;###autoload
(defun jde-ant-build (buildfile target &optional interactive-args)
  "Build the current project using Ant.  If interactive, we try to prompt the
  user for certain variables.."
  (interactive
   (let (buildfile build-history target interactive-args)
     
     ;;build up the list of args we should use

     ;;get the buildfile.
     (setq buildfile (jde-ant-interactive-get-buildfile))

     ;; Getting the history for the proper buildfile
     (setq build-history (jde-ant-get-from-history buildfile))
     
     ;;get the target using completion.
     (if jde-ant-read-target
         (if jde-ant-complete-target
             (setq target (completing-read
                           "Target to build: "
                           (jde-ant-get-target-alist buildfile)
                           nil
                           t
                           (car build-history)
                           'build-history))

           ;;without using completion... read the target as a string.
           (setq target (read-from-minibuffer
                         "Target to build: "
                         (car build-history)
                         nil
                         nil
                         'build-history))))

     ;; Setting the history for future use
     (jde-ant-add-to-history buildfile build-history)
     
     (setq target (jde-ant-escape target))
     (if jde-ant-read-args
         (setq interactive-args (read-from-minibuffer
                                 "Additional build args: "
                                 (nth 0 jde-ant-interactive-args-history)
                                 nil nil
                                 '(jde-ant-interactive-args-history . 1))))

     ;;some of these global variables are defaults.  We should restore then for
     ;;every request.  IE jde-ant-interactive-target and
     ;;jde-ant-interactive-args

     (setq jde-ant-interactive-buildfile buildfile)

     ;;return our new arguments.  
     ;;This should be a list of buildfile, target and optional-args.
     (list buildfile target interactive-args)))
  
  (let ((compile-command (jde-build-ant-command target
                                                interactive-args buildfile)))

    (when compile-command
      ;; Force save-some-buffers to use the minibuffer
      ;; to query user about whether to save modified buffers.
      ;; Otherwise, when user invokes the command from
      ;; menu, save-some-buffers tries to popup a menu
      ;; which seems not to be supported--at least on
      ;; the PC.
      (if (and (eq system-type 'windows-nt)
	       (not jde-xemacsp))
          (let ((temp last-nonmenu-event))
            ;; The next line makes emacs think that the command
            ;; was invoked from the minibuffer, even when it
            ;; is actually invoked from the menu-bar.
            (setq last-nonmenu-event t)
            (save-some-buffers (not compilation-ask-about-save) nil)
            (setq last-nonmenu-event temp))
        (save-some-buffers (not compilation-ask-about-save) nil))
      
      (setq compilation-finish-function
            (lambda (buf msg)
              (run-hook-with-args 'jde-ant-build-hook buf msg)
              (setq compilation-finish-function nil)))

      (if (string= (car jde-ant-invocation-method) "Ant Server")
          (progn
            (while (string-match "\"" compile-command)
              (setq compile-command (replace-match "" nil nil
                                                   compile-command)))
            (jde-ant-compile-internal compile-command 
                                      "No more errors"))
        (compile-internal compile-command "No more errors")))))

(defvar jde-ant-comint-filter nil)

(defun jde-ant-escape (target)
  "Looks for \ characters and escape them, i.e. \\"
  (if (not (null target))
      (let (temp c)
        (while (not (string= target ""))
          (setq c (substring target 0 1)) 
          (if (string= c "\\") 
              (setq temp (concat temp c)))
          (setq temp (concat temp c))
          (setq target (substring target 1)))
        temp)))
     
(defun jde-ant-compile-internal (command error-message) 
  "This method displays ant output in a compilation buffer.
error-message is a string to print if the user asks to see another error
and there are no more errors. "
  (let* (error-regexp-alist
         enter-regexp-alist
         leave-regexp-alist
         file-regexp-alist
         nomessage-regexp-alist
         (parser compilation-parse-errors-function)
          outbuf)
    
    (save-excursion				       ;;getting or creating
      (setq outbuf (get-buffer-create "*compilation*"));;the compilation buffer
      (set-buffer outbuf) ;;setting the compilation buffer
      
      ;; In case the compilation buffer is current, make sure we get the global
      ;; values of compilation-error-regexp-alist, etc.
      (kill-all-local-variables))
	(setq error-regexp-alist compilation-error-regexp-alist)
	(setq enter-regexp-alist
              (if (not jde-xemacsp) compilation-enter-directory-regexp-alist))
	(setq leave-regexp-alist
              (if (not jde-xemacsp) compilation-leave-directory-regexp-alist))
	(setq file-regexp-alist
              (if (not jde-xemacsp) compilation-file-regexp-alist))
	(setq nomessage-regexp-alist
              (if (not jde-xemacsp) compilation-nomessage-regexp-alist))
  
        (let* (proc (thisdir (jde-ant-get-default-directory)) outwin)
          (save-excursion
            ;; Clear out the compilation buffer and make it writable.
            (if (not (bsh-running-p))
                (bsh-eval (jde-create-prj-values-str)))
            (setq proc (bsh-get-process))
            (set-buffer outbuf)
            (compilation-mode)
            (setq buffer-read-only nil)
            (buffer-disable-undo (current-buffer))
            (erase-buffer)
            (buffer-enable-undo (current-buffer))
            (display-buffer outbuf)
            (insert "AntServer output:\n")
            (insert command "\n")
            (set-buffer-modified-p nil)
            (setq jde-ant-comint-filter (process-filter proc))
            (set-process-filter proc 'jde-ant-filter)
            ;;resets the jde-ant-passed-security-exception flag
            (setq jde-ant-passed-security-exception nil)
            (process-send-string proc (concat "jde.util.AntServer.start(\"" 
                                              command "\");" "\n")))
          (setq outwin (display-buffer outbuf))
          (save-excursion
            ;; (setq buffer-read-only t)  ;;; Non-ergonomic.
            (set (make-local-variable 'compilation-parse-errors-function)
                 parser)
            (set (make-local-variable 'compilation-error-message)
                 error-message)
            (set (make-local-variable 'compilation-error-regexp-alist)
                 error-regexp-alist)
            (if (not jde-xemacsp)
                (progn
                  (set (make-local-variable
                        'compilation-enter-directory-regexp-alist)
                       enter-regexp-alist)
                  (set (make-local-variable
                        'compilation-leave-directory-regexp-alist)
                       leave-regexp-alist)
                  (set (make-local-variable 'compilation-file-regexp-alist)
                       file-regexp-alist)
                  (set (make-local-variable
                        'compilation-nomessage-regexp-alist)
                       nomessage-regexp-alist)))
            (setq default-directory thisdir
                  compilation-directory-stack (list default-directory))
            (compilation-set-window-height outwin)
            
            (if (not jde-xemacsp)
                (if compilation-process-setup-function
                    (funcall compilation-process-setup-function)))))
        ;; Make it so the next C-x ` will use this buffer.
        (setq compilation-last-buffer outbuf)))

(defun jde-ant-filter (proc string) 
  "This filter prints out the result of the process without buffering.
The result is inserted as it comes in the compilation buffer."
  (with-current-buffer (get-buffer "*compilation*")
    (let ((stack-trace (string-match "java.lang.SecurityException" string))
          (end-of-result (string-match ".*bsh % " string))
          (win (get-buffer-window "*compilation*"))
          )
      
      (save-excursion
        ;;Insert the text, advancing the process marker
        (goto-char (point-max))
        
        ;;if the security exception has been thrown set the
        ;;jde-ant-passed-security-exception flag and filter the stack trace out
        ;;of the ouput
        (if stack-trace 
            (progn
              (setq jde-ant-passed-security-exception t)
              (insert (substring string 0 stack-trace))
              (set-buffer-modified-p nil)
              (compilation-mode "Compilation")
              (jde-ant-set-build-status (buffer-string))
              (jde-ant-handle-exit)))
        
        (if end-of-result
            (progn
              (if (not jde-ant-passed-security-exception)
                  (progn 
                    (insert (substring string 0 end-of-result))
                    (set-buffer-modified-p nil)
                    (compilation-mode "Compilation")
                    (jde-ant-set-build-status (buffer-string))
                    (jde-ant-handle-exit)))
              (set-process-filter proc jde-ant-comint-filter)))
        (if (and (not end-of-result)
                 (not jde-ant-passed-security-exception))
            (insert string)))
    (if (not jde-xemacsp)
          (if compilation-scroll-output
              (save-selected-window
                (if win
                    (progn 
                      (select-window win)
                      (goto-char (point-max))))
                (sit-for 0)))))))

(defun jde-ant-handle-exit ()
  "Handles the compilation exit"
  (compilation-handle-exit 
   'exit jde-ant-build-status
   (if (string= "0" jde-ant-build-status)
       "finished\n"
     "exited abnormally with code 1\n")))

(defun jde-ant-set-build-status (buffer-contents)
  "Sets the build status based on the BUFFER-CONTENTS"
  (if (string-match ".*BUILD SUCCESSFUL.*" buffer-contents)
      (setq jde-ant-build-status "0"))
  (if (string-match ".*BUILD FAILED.*" buffer-contents)
      (setq jde-ant-build-status "1")))

;;;###autoload
(defun jde-ant-projecthelp(buildfile)
  "Display Ant project help for the current project.
This will execute the Ant program with the `-projecthelp' switch to output
available targets with their descriptions for the current buildfile. This
function uses the same rules as `jde-ant-build' for finding the buildfile."
  (interactive
   (list
    (jde-ant-interactive-get-buildfile)))

  (jde-ant-build buildfile nil "-projecthelp"))
  
(defun jde-ant-find-build-file (dir)
  "Find the next Ant build file upwards in the directory tree from DIR.
Returns nil if it cannot find a project file in DIR or an ascendant directory."
  (let ((file (find (cond ((string= jde-ant-buildfile "") "build.xml")
                          (t jde-ant-buildfile))
                    (directory-files dir) :test 'string=)))
    
    (if file
        (setq file (expand-file-name file dir))
      (if (not (jde-root-dir-p dir))
          (setq file (jde-ant-find-build-file (concat dir "../")))))

    file))

(defun jde-ant-get-target-alist (buildfile)
  "Returns asociation list of valid Ant project targets."

  (let ((targets nil )
        (temp-buf (get-buffer-create "*jde-ant-get-target-list-temp-buffer*")))
    (unwind-protect
        (save-excursion
          (set-buffer temp-buf)
          (erase-buffer)
          (insert-file-contents buildfile)
          (goto-char (point-min))
          (while (re-search-forward jde-ant-target-regexp (point-max) t)
            (setq targets (append targets (list (list (match-string 1)))))))
      (kill-buffer temp-buf))

    targets))

;;;###autoload
(defun jde-ant-show-options ()
  "Show the JDE Ant Options panel."
  (interactive)
  (customize-apropos "jde-ant" 'groups))

(defun jde-ant-get-default-directory ()
  "Gets the default-directory according to the value of
'jde-ant-working-directory."
  (if (string= jde-ant-working-directory "")
      default-directory
    jde-ant-working-directory))

(defun jde-ant-add-to-history (buildfile build-history)
  (let ((temp (nth 0 jde-ant-interactive-target-history))
        (index -1) (found nil))
    (while (and temp (not found))
      (setq index (1+ index))
      (setq temp (nth index jde-ant-interactive-target-history))
      (if (string= (car temp) buildfile)
	  (setq found t)))
    (if found
        (setcdr temp build-history)
      (setq jde-ant-interactive-target-history 
            (append 
             jde-ant-interactive-target-history 
             (list (list buildfile (car build-history))))))))

(defun jde-ant-get-from-history (buildfile)
  (let ((temp (nth 0 jde-ant-interactive-target-history))
        (index -1) (found nil))
    (while (and temp (not found))
      (setq index (1+ index))
      (setq temp (nth index jde-ant-interactive-target-history))
      (if (string= (car temp) buildfile)
	  (setq found t)))
    (if found
	(cdr temp)
      nil)))

;; Register and initialize the customization variables defined
;; by this package.
(jde-update-autoloaded-symbols)

(provide 'jde-ant)

;; Change History 

;;
;; $Log: jde-ant.el,v $
;; Revision 1.4  2003/01/18 05:48:43  andyp
;; sync to jde 2.3.2
;;
;; Revision 1.54  2002/12/14 18:37:36  jslopez
;; Fixes regression bug.
;;
;; Revision 1.53  2002/12/14 18:24:03  jslopez
;; Removes incompatibility between jde-ant-enable-find and jde-ant-read-buildfile.
;;
;; Revision 1.52  2002/12/14 17:49:04  jslopez
;; Changes the target history to be specific to each buildfile.
;;
;; Revision 1.51  2002/12/14 03:35:07  jslopez
;; Fixes quoting the classpath for the Java invocation method.
;; Fixes the jde-ant-build-classpath command to grab the jar files
;; in the ANT_HOME/lib directory.
;;
;; Revision 1.50  2002/12/06 03:47:36  ahyatt
;; Changes to support Mac OS X, which does not use tools.jar
;;
;; Revision 1.49  2002/12/05 19:34:15  jslopez
;; Readds normalizing jde-ant-buildfile. The problem with normalizing occurs only
;; when using the Emacs that comes with the cygwin distribution.  In that emacs a
;; path that starts with a drive letter, i.e. C: is not properly interpreted by
;; emacs.
;;
;; Revision 1.48  2002/12/02 14:26:22  jslopez
;; Adds jde-ant-working-directory.
;; Rollbacks previous change of normalizing the jde-ant-buildfile.
;; In certain instances you endup with a wrong buildfile path.
;;
;; Revision 1.47  2002/12/01 13:52:24  jslopez
;; Normalizes jde-ant-buildfile before using it.
;; Thanks to Luis Miguel Hernanz <luish@germinus.com> for the patch.
;;
;; Revision 1.46  2002/11/21 04:18:41  paulk
;; These packages, when autoloaded, now register and initialize the customization variables
;; that they define to the values specified in the current project file.
;;
;; Revision 1.45  2002/11/05 07:51:18  paulk
;; Mac OS X (darwin) compatibility fix: find path of JDK java program on Macintosh. Thanks to Andrew Hyatt.
;;
;; Revision 1.44  2002/09/18 16:07:33  jslopez
;; Removes dependency on having ANT_HOME or jde-ant-home to use the
;; script method of jde-ant.
;;
;; Revision 1.43  2002/09/18 15:50:01  jslopez
;; Fixes bug retrieving build status.
;;
;; Revision 1.42  2002/09/18 15:34:01  jslopez
;; Modifies some regexps in the jde-ant-filter.
;;
;; Revision 1.41  2002/09/15 14:34:43  jslopez
;; Fixes bug in jde-ant-build that was trying to escape a nil target.
;;
;; Revision 1.40  2002/09/06 13:04:21  jslopez
;; Fixes use of the correct jvm.
;;
;; Revision 1.39  2002/08/30 22:41:30  jslopez
;; Fixes jde-ant-filter to avoid having a partial stack trace in the bsh buffer.
;;
;; Revision 1.38  2002/08/29 12:38:55  jslopez
;; Updates jde-ant-build-hook to take the buffer and a message as parameters.
;; Updates jde-ant-build-hook to run as the compilation-finish-function.
;; Adds to the jde-ant-build-hook the same hooks that jde-compile-finish-hook runs.
;;
;; Revision 1.37  2002/08/29 11:20:24  jslopez
;; Improves the jde-ant-filter to filter the java.lang.SecurityException
;; stack trace at the end of the compilation.
;;
;; Revision 1.36  2002/08/07 06:36:20  paulk
;; Removed code intended to eliminate spurious warnings when byte-compiling the JDEE. The
;; removed code now resides in a separate package, jde-compat.el. Thanks to Andy Piper
;; for suggesting this restructuring. Also fixed a number of compiler warnings caused
;; by genuine bugs.
;;
;; Revision 1.35  2002/06/25 16:10:59  jslopez
;; Enhance jde-ant-build to escape \ from targets.
;;
;; Revision 1.34  2002/05/12 06:19:34  paulk
;; Docstring spelling correction.
;;
;; Revision 1.33  2002/02/25 20:09:59  jslopez
;; The Ant Server now uses its own filter.
;;
;; Revision 1.32  2002/02/16 16:10:19  jslopez
;; Adds jde-ant-build-hook.
;;
;; Revision 1.31  2002/02/15 14:11:52  jslopez
;; Updates from CompileServer to AntServer.
;;
;; Revision 1.30  2002/02/15 02:50:57  jslopez
;; Updates the ant server to be interactive.
;;
;; Revision 1.29  2002/01/31 03:27:59  jslopez
;; Changes:
;;
;; - jde-build-ant-command now takes an optional argument buildfile which
;; - The jde-ant-buildfile variable is now deprecated as anything but providing
;;   a default
;; - jde-ant-projecthelp now uses an interactive prompt and also shares a
;;   function with jde-ant-build for reading the buildfile.
;; - jde-ant-find-build-file uses jde-ant-buildfile as a default reference and
;;   returns a string for the buildfile to use or nil.
;; - jde-ant-get-target-alist now accepts a buildfile instead of using find. We
;; now parameterize the filename.
;; - jde-ant-interactive-buildfile is saved for every use of jde-ant-build and
;; used as the default next time we enter.
;; - We no longer use the Ant version of -find.  We now have a lisp version of
;; this.  This was necessary in order to support jde-ant-read-target and since
;; we already have an implementation it doesn't make sense to have Ant find the
;; file a second time.
;; - documentation updates.
;; - history variables now just use -history instead arg-history
;; - jde-ant-interactive-target is now gone, this is no longer needed.
;; - jde-ant-interactive-args is now gone, this is no longer needed.
;; - Adds`jde-ant-use-global-classpath' (which is disabled by default) so that the
;;  `jde-global-classpath' can be used.
;; Thanks to Kevin Burton.
;;
;; Revision 1.28  2001/12/03 16:35:44  jslopez
;; Fixes bug when setting jde-ant-invocation-method to Script.
;;
;; Revision 1.27  2001/11/28 13:22:14  jslopez
;; JDE ant uses jde-normalize-path with
;; jde-ant-home and jde-ant-buildfile.
;;
;; Revision 1.26  2001/11/27 14:04:43  jslopez
;; XEmacs compatability fix.
;;
;; Revision 1.25  2001/11/27 02:23:08  jslopez
;; Adds jde-ant-buildfile-arg-history variable.
;; Fixes jde-ant-target-regexp to match the name attribute
;; when it is in a different ine than the target.
;; i.e. <target description="foo"
;;              name="compile">
;; Removes unnecessary messages.
;; XEmacs compatibility fix.
;;
;; Revision 1.24  2001/11/21 15:35:56  jslopez
;; Modifies the jde-ant-target-regexp to
;; match the targets name anywhere in the line.
;; It stills fails if the target name is in a different
;; line.
;;
;; Revision 1.23  2001/11/18 21:42:06  jslopez
;; Updating documentation.
;;
;; Revision 1.22  2001/11/18 21:39:07  jslopez
;; Modifies jde-build-ant-command to get the
;; ant home value from the
;; environment if jde-ant-home is not set.
;;
;; Revision 1.21  2001/11/11 23:27:41  jslopez
;; Fixed bug in jde-ant-build-command, causing jde-ant-args getting
;; appending without a space to the ant command if
;; jde-ant-buildfile is not specified.
;; Update the documentation for the methods jde-ant-invocation-method
;; and jde-ant-home.
;;
;; Revision 1.20  2001/11/09 02:05:36  jslopez
;; Fixing the output's display.
;;
;; Revision 1.19  2001/11/05 02:15:28  jslopez
;; Adds an option to use AntServer for builds.
;;
;; Revision 1.18  2001/11/04 19:22:33  jslopez
;; Fixes bug using Ant target completion
;; cause when jde-ant-enable-find is not enabled.
;;
;; Revision 1.17  2001/10/30 15:20:41  jslopez
;; Replaces the custom variable jde-ant-dir with jde-ant-home.
;; Enclose the classpath with double quotes for Windows machines
;; using cygwin as a shell.
;; Include the flag ant.home as an argument to ant.
;;
;; Revision 1.16  2001/10/29 12:50:29  jslopez
;; Removed the installation instructions from the top of the file
;; since it was obsolete. Jde-ant can be used out of the box with
;; JDE without having to any other installation.
;; Finished moving all the ant customization variables to the
;; customization group jde-ant.
;;
;; Revision 1.15  2001/10/29 06:27:40  paulk
;; Fixed minor bug in last submission.
;;
;; Revision 1.14  2001/10/29 06:21:28  paulk
;; Added support for invoking Ant directly from java or via the ant script.
;; Thanks to Douglas WF Acheson <dwfa@yahoo.com> for some help on this.
;;
;; Revision 1.13  2001/10/21 14:36:56  jslopez
;; Added jde-ant customization group and
;; moved all its customization variables under
;; that group.
;;
;; Revision 1.12  2001/10/21 05:52:24  paulk
;; Added support auto completion of Ant targets in mini-buffer.
;; Added the following defuns and variables:
;;     defun jde-ant-find-build-file
;;     defun jde-ant-get-target-alist
;;     defcustom jde-ant-complete-target
;;     defcustom jde-ant-target-regexp
;; Modified defun jde-ant-read-target to use auto-completion, if
;; jde-ant-complete-target is non-nil. Thanks to Stephen Molitor.
;;
;; Revision 1.11  2001/10/21 05:17:54  paulk
;; Restored changes from Revison 1.9.
;;
;; Revision 1.9  2001/10/05 15:04:32  jslopez
;; Removed calls that were setting the defaul-directory in
;; jde-ant-projecthelp and jde-ant-build. There are not needed.
;;
;; Revision 1.8  2001/10/04 04:33:54  paulk
;; Start change history.
;;
;;

;; End of jde-ant.el
