;;; -*- Emacs-Lisp -*-
;;; YaTeX package manager
;;; yatexpkg.el
;;; (c)2003-2012 by HIROSE, Yuuji [yuuji@yatex.org]
;;; Last modified Mon Jan  9 20:13:53 2012 on firestorm
;;; $Id$

(defvar YaTeX-package-ams-envs
  (mapcar 'car YaTeX-ams-env-table))

(defvar YaTeX-package-alist-default
  '(("version"	(env "comment")		;by tsuchiya<at>pine.kuee.kyoto-u.ac.jp
     		(section "includeversion" "excludeversion"))

    ("plext"	(section "bou"))	;by yas.axis<at>ma.mni.ne.jp

    ("url"	(section "url"))	;by fujieda<at>jaist.ac.jp

    ("fancybox"	(section "shadowbox" "doublebox" "ovalbox" "Ovalbox"))
    ("slashbox"	(section "slashbox" "backslashbox"))
    ("pifont"	(section "ding"))
    ("longtable" (env "longtable"))
    ("ascmac"	(env "screen" "boxnote" "shadebox" "itembox")
		(maketitle "return" "Return" "yen")
     		(section "keytop") ("mask") ("maskbox"))
    ("bm"	(section "bm"))		;by aoyama<at>le.chiba-u.ac.jp

    ("alltt"	(env "alltt"))
    ("misc"	(section "verbfile" "listing"))
    ("eclbkbox"	(env "breakbox"))
    ("supertabular" (env "supertabular"))
    ("amsmath"	(env . YaTeX-package-ams-envs)
     		(section "tag" "tag*"))
    ("amssymb"	(maketitle "leqq" "geqq" "mathbb" "mathfrak"
			   "fallingdotseq"
			   "lll" "ggg")) ;very few.  Please tell us!
    ("graphicx" (section "includegraphics"
			 "rotatebox" "scalebox" "resizebox" "reflectbox")
     		(option . YaTeX-package-graphics-driver-alist))
    ("color"	(section "textcolor" "colorbox" "pagecolor" "color")
     		(option . YaTeX-package-graphics-driver-alist))
    ("ulem"	(section "uline" "uuline" "uwave")
		(option ("normalem")))
    ("multicol"	(env "multicols")))
  "Default package vs. macro list.
Alists contains '(PACKAGENAME . MACROLIST)
PACKAGENAME     Basename of package(String).
MACROLIST	List of '(TYPE . MACROS)
TYPE	One of 'env, 'section or 'maketitle according to completion-type
MACROS	List of macros

If TYPE is 'option, its cdr is alist of completion candidates for that
package.  Its cdr can be a symbol whose value is alist.

An good example is the value of YaTeX-package-alist-default.")

(defvar YaTeX-package-graphics-driver-alist
  '(("dvips") ("xdvi") ("dvipdf") ("pdftex") ("dvipsone") ("dviwindo")
    ("emtex") ("dviwin") ("oztex") ("textures") ("pctexps") ("pctexwin")
    ("pctexhp") ("pctex32") ("truetex") ("tcidvi") ("vtex"))
  "Drivers alist of graphics/color stylefile's supporting deveces.
This list is taken from
%% graphics.dtx Copyright (C) 1994      David Carlisle Sebastian Rahtz
%%              Copyright (C) 1995 1996 1997 1998 David Carlisle
as of 2004/1/19.  Thanks.")

(defvar YaTeX-package-alist-private nil
  "*User defined package vs. macro list. See also YaTeX-package-alist-default")

(defun YaTeX-package-lookup (macro &optional type)
  "Look up a package which contains a definition of MACRO.
Optional second argument TYPE limits the macro type.
TYPE is a symbol, one of 'env, 'section, 'maketitle."
  (let ((list (append YaTeX-package-alist-private YaTeX-package-alist-default))
	element x val pkg pkglist r)
    (while list
      (setq element (car list)
	    pkg (car element)
	    element (cdr element))
      (if (setq r (catch 'found
		    (while element
		      (setq x (car element)
			    val (cdr x))
		      (if (symbolp val) (setq val (symbol-value val)))
		      (and (or (null type)
			       (eq type (car x)))
			   (YaTeX-member macro val)
			   (throw 'found (car x)))	;car x is type
		      (setq element (cdr element)))))
	  (setq pkglist (cons (cons pkg r) pkglist)))
      (setq list (cdr list)))
    pkglist))

(defun YaTeX-package-option-lookup (pkg)
  "Look up options for specified pkg and returne them in alist form.
Just only accocing against the alist of YaTeX-package-alist-*"
  (let ((l (cdr (assq 'option
		      (assoc pkg (append YaTeX-package-alist-private
					 YaTeX-package-alist-default))))))
    (if (symbolp l) (symbol-value l) l)))

(defvar YaTeX-package-resolved-list nil
  "List of macros whose package is confirmed to be loaded.")

(defun YaTeX-package-auto-usepackage (macro type)
  "(Semi)Automatically add the \\usepackage line to main-file.
Search the usepackage for MACRO of the TYPE."
  (let ((cb (current-buffer))
	(wc (current-window-configuration))
	(usepackage (concat YaTeX-ec "usepackage"))
	(pkglist (YaTeX-package-lookup macro type))
	(usepkgrx (concat
		   YaTeX-ec-regexp
		   "\\(usepackage\\|include\\)\\b"))
	(register '(lambda () (set-buffer cb)
		     (set (make-local-variable 'YaTeX-package-resolved-list)
			  (cons macro YaTeX-package-resolved-list))))
	(begdoc (concat YaTeX-ec "begin{document}"))
	pb pkg optlist (option "") mb0 uspkgargs)
    (if (or (YaTeX-member macro YaTeX-package-resolved-list)
	    (null pkglist))
	nil				;nothing to do
      ;; Search `usepackage' into main-file
      (YaTeX-visit-main t)		;set buffer to parent file
      (setq pb (current-buffer))
      (save-excursion
	(save-restriction
	  (if (catch 'found
		(goto-char (point-min))
		(YaTeX-search-active-forward	;if search fails, goto eob
		 begdoc YaTeX-comment-prefix nil 1)
		(while ;(YaTeX-re-search-active-backward
			;usepkgrx YaTeX-comment-prefix nil t)
		    ;;allow commented out \usepackages 2004/3/16
		    (re-search-backward usepkgrx nil t)
		  (setq mb0 (match-beginning 0))
		  (skip-chars-forward "^{")
		  (setq uspkgargs (YaTeX-buffer-substring
				   (point)
				   (progn
				     ;;(forward-list 1) is more precise,
				     ;; but higher risk.
				     (skip-chars-forward "^}\n")(point))))
		  (let ((pl pkglist))
		    (while pl		;(car pl)'s car is package, cdr is type
		      (if (string-match
			   (concat "[{,]\\s *"
				   (regexp-quote (car (car pl)))
				   "\\>")
			   uspkgargs)
			  (throw 'found t))
		      (setq pl (cdr pl)))
		    (goto-char mb0))))
	      ;;corresponding \usepackage found
	      (funcall register)
	    ;; not found, insert it.
	    (if (y-or-n-p
		 (format "`%s' requires package. Put \\usepackage now?" macro))
		(progn
		  (require 'yatexadd)
		  (setq pkg
			(completing-read
			 "Load which package?(TAB for list): "
			 pkglist nil nil
			 ;;initial input
			 (if (= (length pkglist) 1)
			     (let ((w (car (car pkglist))))
			       (if YaTeX-emacs-19 (cons w 0) w))))
			optlist
			(YaTeX-package-option-lookup pkg))
		  (if optlist
		      (let ((minibuffer-completion-table optlist)
			    (delim ",") (w (car (car optlist))))
			(setq option
			      (read-from-minibuffer
			       (format "Any option for {%s}?: " pkg)
			       (if (= (length optlist) 1)
				   (if YaTeX-emacs-19 (cons w 0) w))
			       YaTeX-minibuffer-completion-map)
			      option (if (string< "" option)
					 (concat "[" option "]")
				       ""))))
		  (set-buffer pb)
		  (goto-char (point-min))
		  (if (YaTeX-re-search-active-forward
		       (concat YaTeX-ec-regexp
			       "document\\(style\\|class\\){")
		       YaTeX-comment-prefix nil t)
		      (forward-line 1))
		  (if (YaTeX-search-active-forward
		       begdoc YaTeX-comment-prefix nil t)
		      (goto-char (match-beginning 0)))
		  (insert
		   usepackage
		   (format "%s{%s}\t%% required for `\\%s' (yatex added)\n"
			   option pkg macro))
		  (funcall register))
	      (funcall register)
	      (message "Don't forget to put \\usepackage{%s} yourself later"
		       (car (car pkglist)))) ;doing car car is negligence...
    ))))))