lisp/org-docbook.el

   1 ;;; org-docbook.el --- DocBook exporter for org-mode
   2 ;;
   3 ;; Copyright (C) 2007-2012 Free Software Foundation, Inc.
   4 ;;
   5 ;; Emacs Lisp Archive Entry
   6 ;; Filename: org-docbook.el
   7 ;; Author: Baoqiu Cui <cbaoqiu AT yahoo DOT com>
   8 ;; Maintainer: Baoqiu Cui <cbaoqiu AT yahoo DOT com>
   9 ;; Keywords: org, wp, docbook
  10 ;; Description: Converts an org-mode buffer into DocBook
  11 ;; URL:
  12
  13 ;; This file is part of GNU Emacs.
  14
  15 ;; GNU Emacs is free software: you can redistribute it and/or modify
  16 ;; it under the terms of the GNU General Public License as published by
  17 ;; the Free Software Foundation, either version 3 of the License, or
  18 ;; (at your option) any later version.
  19
  20 ;; GNU Emacs is distributed in the hope that it will be useful,
  21 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23 ;; GNU General Public License for more details.
  24
  25 ;; You should have received a copy of the GNU General Public License
  26 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  27
  28 ;;; Commentary:
  29 ;;
  30 ;; This library implements a DocBook exporter for org-mode.  The basic
  31 ;; idea and design is very similar to what `org-export-as-html' has.
  32 ;; Code prototype was also started with `org-export-as-html'.
  33 ;;
  34 ;; Put this file into your load-path and the following line into your
  35 ;; ~/.emacs:
  36 ;;
  37 ;;   (require 'org-docbook)
  38 ;;
  39 ;; The interactive functions are similar to those of the HTML and LaTeX
  40 ;; exporters:
  41 ;;
  42 ;; M-x `org-export-as-docbook'
  43 ;; M-x `org-export-as-docbook-pdf'
  44 ;; M-x `org-export-as-docbook-pdf-and-open'
  45 ;; M-x `org-export-as-docbook-batch'
  46 ;; M-x `org-export-as-docbook-to-buffer'
  47 ;; M-x `org-export-region-as-docbook'
  48 ;; M-x `org-replace-region-by-docbook'
  49 ;;
  50 ;; Note that, in order to generate PDF files using the DocBook XML files
  51 ;; created by DocBook exporter, the following two variables have to be
  52 ;; set based on what DocBook tools you use for XSLT processor and XSL-FO
  53 ;; processor:
  54 ;;
  55 ;;   org-export-docbook-xslt-proc-command
  56 ;;   org-export-docbook-xsl-fo-proc-command
  57 ;;
  58 ;; Check the document of these two variables to see examples of how they
  59 ;; can be set.
  60 ;;
  61 ;; If the Org file to be exported contains special characters written in
  62 ;; TeX-like syntax, like \alpha and \beta, you need to include the right
  63 ;; entity file(s) in the DOCTYPE declaration for the DocBook XML file.
  64 ;; This is required to make the DocBook XML file valid.  The DOCTYPE
  65 ;; declaration string can be set using the following variable:
  66 ;;
  67 ;;   org-export-docbook-doctype
  68 ;;
  69 ;;; Code:
  70
  71 (eval-when-compile
  72   (require 'cl))
  73
  74 (require 'footnote)
  75 (require 'org)
  76 (require 'org-exp)
  77 (require 'org-html)
  78 (require 'format-spec)
  79
  80 ;;; Variables:
  81
  82 (defvar org-docbook-para-open nil)
  83 (defvar org-export-docbook-inline-images t)
  84 (defvar org-export-docbook-link-org-files-as-docbook nil)
  85
  86 (declare-function org-id-find-id-file "org-id" (id))
  87
  88 ;;; User variables:
  89
  90 (defgroup org-export-docbook nil
  91   "Options for exporting Org-mode files to DocBook."
  92   :tag "Org Export DocBook"
  93   :group 'org-export)
  94
  95 (defcustom org-export-docbook-extension ".xml"
  96   "Extension of DocBook XML files."
  97   :group 'org-export-docbook
  98   :type 'string)
  99
 100 (defcustom org-export-docbook-header "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
 101   "Header of DocBook XML files."
 102   :group 'org-export-docbook
 103   :type 'string)
 104
 105 (defcustom org-export-docbook-doctype nil
 106   "DOCTYPE declaration string for DocBook XML files.
 107 This can be used to include entities that are needed to handle
 108 special characters in Org files.
 109
 110 For example, if the Org file to be exported contains XHTML
 111 entities, you can set this variable to:
 112
 113 \"<!DOCTYPE article [
 114 <!ENTITY % xhtml1-symbol PUBLIC
 115 \"-//W3C//ENTITIES Symbol for HTML//EN//XML\"
 116 \"http://www.w3.org/2003/entities/2007/xhtml1-symbol.ent\"
 117 >
 118 %xhtml1-symbol;
 119 ]>
 120 \"
 121
 122 If you want to process DocBook documents without an Internet
 123 connection, it is suggested that you download the required entity
 124 file(s) and use system identifier(s) (external files) in the
 125 DOCTYPE declaration."
 126   :group 'org-export-docbook
 127   :type 'string)
 128
 129 (defcustom org-export-docbook-article-header "<article xmlns=\"http://docbook.org/ns/docbook\"
 130          xmlns:xlink=\"http://www.w3.org/1999/xlink\" version=\"5.0\" xml:lang=\"en\">"
 131   "Article header of DocBook XML files."
 132   :group 'org-export-docbook
 133   :type 'string)
 134
 135 (defcustom org-export-docbook-section-id-prefix "sec-"
 136   "Prefix of section IDs used during exporting.
 137 This can be set before exporting to avoid same set of section IDs
 138 being used again and again, which can be a problem when multiple
 139 people work on the same document."
 140   :group 'org-export-docbook
 141   :type 'string)
 142
 143 (defcustom org-export-docbook-footnote-id-prefix "fn-"
 144   "The prefix of footnote IDs used during exporting.
 145 Like `org-export-docbook-section-id-prefix', this variable can help
 146 avoid same set of footnote IDs being used multiple times."
 147   :group 'org-export-docbook
 148   :type 'string)
 149
 150 (defcustom org-export-docbook-footnote-separator "<superscript>, </superscript>"
 151   "Text used to separate footnotes."
 152   :group 'org-export-docbook
 153   :version "24.1"
 154   :type 'string)
 155
 156 (defcustom org-export-docbook-emphasis-alist
 157   `(("*" "<emphasis role=\"bold\">" "</emphasis>")
 158     ("/" "<emphasis>" "</emphasis>")
 159     ("_" "<emphasis role=\"underline\">" "</emphasis>")
 160     ("=" "<code>" "</code>")
 161     ("~" "<literal>" "</literal>")
 162     ("+" "<emphasis role=\"strikethrough\">" "</emphasis>"))
 163   "A list of DocBook expressions to convert emphasis fontifiers.
 164 Each element of the list is a list of three elements.
 165 The first element is the character used as a marker for fontification.
 166 The second element is a formatting string to wrap fontified text with.
 167 The third element decides whether to protect converted text from other
 168 conversions."
 169   :group 'org-export-docbook
 170   :type 'alist)
 171
 172 (defcustom org-export-docbook-default-image-attributes
 173   `(("align" . "\"center\"")
 174     ("valign". "\"middle\""))
 175   "Alist of default DocBook image attributes.
 176 These attributes will be inserted into element <imagedata> by
 177 default, but users can override them using `#+ATTR_DocBook:'."
 178   :group 'org-export-docbook
 179   :type 'alist)
 180
 181 (defcustom org-export-docbook-inline-image-extensions
 182   '("jpeg" "jpg" "png" "gif" "svg")
 183   "Extensions of image files that can be inlined into DocBook."
 184   :group 'org-export-docbook
 185   :type '(repeat (string :tag "Extension")))
 186
 187 (defcustom org-export-docbook-coding-system nil
 188   "Coding system for DocBook XML files."
 189   :group 'org-export-docbook
 190   :type 'coding-system)
 191
 192 (defcustom org-export-docbook-xslt-stylesheet nil
 193   "File name of the XSLT stylesheet used by DocBook exporter.
 194 This XSLT stylesheet is used by
 195 `org-export-docbook-xslt-proc-command' to generate the Formatting
 196 Object (FO) files.  You can use either `fo/docbook.xsl' that
 197 comes with DocBook, or any customization layer you may have."
 198   :group 'org-export-docbook
 199   :version "24.1"
 200   :type 'string)
 201
 202 (defcustom org-export-docbook-xslt-proc-command nil
 203   "Format of XSLT processor command used by DocBook exporter.
 204 This command is used to process a DocBook XML file to generate
 205 the Formatting Object (FO) file.
 206
 207 The value of this variable should be a format control string that
 208 includes three arguments: `%i', `%o', and `%s'.  During exporting
 209 time, `%i' is replaced by the input DocBook XML file name, `%o'
 210 is replaced by the output FO file name, and `%s' is replaced by
 211 `org-export-docbook-xslt-stylesheet' (or the #+XSLT option if it
 212 is specified in the Org file).
 213
 214 For example, if you use Saxon as the XSLT processor, you may want
 215 to set the variable to
 216
 217   \"java com.icl.saxon.StyleSheet -o %o %i %s\"
 218
 219 If you use Xalan, you can set it to
 220
 221   \"java org.apache.xalan.xslt.Process -out %o -in %i -xsl %s\"
 222
 223 For xsltproc, the following string should work:
 224
 225   \"xsltproc --output %o %s %i\"
 226
 227 You can include additional stylesheet parameters in this command.
 228 Just make sure that they meet the syntax requirement of each
 229 processor."
 230   :group 'org-export-docbook
 231   :type 'string)
 232
 233 (defcustom org-export-docbook-xsl-fo-proc-command nil
 234   "Format of XSL-FO processor command used by DocBook exporter.
 235 This command is used to process a Formatting Object (FO) file to
 236 generate the PDF file.
 237
 238 The value of this variable should be a format control string that
 239 includes two arguments: `%i' and `%o'.  During exporting time,
 240 `%i' is replaced by the input FO file name, and `%o' is replaced
 241 by the output PDF file name.
 242
 243 For example, if you use FOP as the XSL-FO processor, you can set
 244 the variable to
 245
 246   \"fop %i %o\""
 247   :group 'org-export-docbook
 248   :type 'string)
 249
 250 (defcustom org-export-docbook-keywords-markup "<literal>%s</literal>"
 251   "A printf format string to be applied to keywords by DocBook exporter."
 252   :group 'org-export-docbook
 253   :type 'string)
 254
 255 (defcustom org-export-docbook-timestamp-markup "<emphasis>%s</emphasis>"
 256   "A printf format string to be applied to time stamps by DocBook exporter."
 257   :group 'org-export-docbook
 258   :type 'string)
 259
 260 ;;; Hooks
 261
 262 (defvar org-export-docbook-final-hook nil
 263   "Hook run at the end of DocBook export, in the new buffer.")
 264
 265 ;;; Autoload functions:
 266
 267 ;;;###autoload
 268 (defun org-export-as-docbook-batch ()
 269   "Call `org-export-as-docbook' in batch style.
 270 This function can be used in batch processing.
 271
 272 For example:
 273
 274 $ emacs --batch
 275         --load=$HOME/lib/emacs/org.el
 276         --visit=MyOrgFile.org --funcall org-export-as-docbook-batch"
 277   (org-export-as-docbook 'hidden))
 278
 279 ;;;###autoload
 280 (defun org-export-as-docbook-to-buffer ()
 281   "Call `org-export-as-docbook' with output to a temporary buffer.
 282 No file is created."
 283   (interactive)
 284   (org-export-as-docbook nil nil "*Org DocBook Export*")
 285   (when org-export-show-temporary-export-buffer
 286     (switch-to-buffer-other-window "*Org DocBook Export*")))
 287
 288 ;;;###autoload
 289 (defun org-replace-region-by-docbook (beg end)
 290   "Replace the region from BEG to END with its DocBook export.
 291 It assumes the region has `org-mode' syntax, and then convert it to
 292 DocBook.  This can be used in any buffer.  For example, you could
 293 write an itemized list in `org-mode' syntax in an DocBook buffer and
 294 then use this command to convert it."
 295   (interactive "r")
 296   (let (reg docbook buf)
 297     (save-window-excursion
 298       (if (eq major-mode 'org-mode)
 299           (setq docbook (org-export-region-as-docbook
 300                          beg end t 'string))
 301         (setq reg (buffer-substring beg end)
 302               buf (get-buffer-create "*Org tmp*"))
 303         (with-current-buffer buf
 304           (erase-buffer)
 305           (insert reg)
 306           (org-mode)
 307           (setq docbook (org-export-region-as-docbook
 308                          (point-min) (point-max) t 'string)))
 309         (kill-buffer buf)))
 310     (delete-region beg end)
 311     (insert docbook)))
 312
 313 ;;;###autoload
 314 (defun org-export-region-as-docbook (beg end &optional body-only buffer)
 315   "Convert region from BEG to END in `org-mode' buffer to DocBook.
 316 If prefix arg BODY-ONLY is set, omit file header and footer and
 317 only produce the region of converted text, useful for
 318 cut-and-paste operations.  If BUFFER is a buffer or a string,
 319 use/create that buffer as a target of the converted DocBook.  If
 320 BUFFER is the symbol `string', return the produced DocBook as a
 321 string and leave not buffer behind.  For example, a Lisp program
 322 could call this function in the following way:
 323
 324   (setq docbook (org-export-region-as-docbook beg end t 'string))
 325
 326 When called interactively, the output buffer is selected, and shown
 327 in a window.  A non-interactive call will only return the buffer."
 328   (interactive "r\nP")
 329   (when (org-called-interactively-p 'any)
 330     (setq buffer "*Org DocBook Export*"))
 331   (let ((transient-mark-mode t)
 332         (zmacs-regions t)
 333         rtn)
 334     (goto-char end)
 335     (set-mark (point)) ;; To activate the region
 336     (goto-char beg)
 337     (setq rtn (org-export-as-docbook
 338                nil nil
 339                buffer body-only))
 340     (if (fboundp 'deactivate-mark) (deactivate-mark))
 341     (if (and (org-called-interactively-p 'any) (bufferp rtn))
 342         (switch-to-buffer-other-window rtn)
 343       rtn)))
 344
 345 ;;;###autoload
 346 (defun org-export-as-docbook-pdf (&optional hidden ext-plist
 347                                             to-buffer body-only pub-dir)
 348   "Export as DocBook XML file, and generate PDF file."
 349   (interactive "P")
 350   (if (or (not org-export-docbook-xslt-proc-command)
 351           (not (string-match "%[ios].+%[ios].+%[ios]" org-export-docbook-xslt-proc-command)))
 352       (error "XSLT processor command is not set correctly"))
 353   (if (or (not org-export-docbook-xsl-fo-proc-command)
 354           (not (string-match "%[io].+%[io]" org-export-docbook-xsl-fo-proc-command)))
 355       (error "XSL-FO processor command is not set correctly"))
 356   (message "Exporting to PDF...")
 357   (let* ((wconfig (current-window-configuration))
 358          (opt-plist
 359           (org-export-process-option-filters
 360            (org-combine-plists (org-default-export-plist)
 361                                ext-plist
 362                                (org-infile-export-plist))))
 363          (docbook-buf (org-export-as-docbook hidden ext-plist
 364                                              to-buffer body-only pub-dir))
 365          (filename (buffer-file-name docbook-buf))
 366          (base (file-name-sans-extension filename))
 367          (fofile (concat base ".fo"))
 368          (pdffile (concat base ".pdf")))
 369     (and (file-exists-p pdffile) (delete-file pdffile))
 370     (message "Processing DocBook XML file...")
 371     (shell-command (format-spec org-export-docbook-xslt-proc-command
 372                                 (format-spec-make
 373                                  ?i (shell-quote-argument filename)
 374                                  ?o (shell-quote-argument fofile)
 375                                  ?s (shell-quote-argument
 376                                      (or (plist-get opt-plist :xslt)
 377                                          org-export-docbook-xslt-stylesheet)))))
 378     (shell-command (format-spec org-export-docbook-xsl-fo-proc-command
 379                                 (format-spec-make
 380                                  ?i (shell-quote-argument fofile)
 381                                  ?o (shell-quote-argument pdffile))))
 382     (message "Processing DocBook file...done")
 383     (if (not (file-exists-p pdffile))
 384         (error "PDF file was not produced")
 385       (set-window-configuration wconfig)
 386       (message "Exporting to PDF...done")
 387       pdffile)))
 388
 389 ;;;###autoload
 390 (defun org-export-as-docbook-pdf-and-open ()
 391   "Export as DocBook XML file, generate PDF file, and open it."
 392   (interactive)
 393   (let ((pdffile (org-export-as-docbook-pdf)))
 394     (if pdffile
 395         (org-open-file pdffile)
 396       (error "PDF file was not produced"))))
 397
 398 (defvar org-heading-keyword-regexp-format) ; defined in org.el
 399
 400 ;;;###autoload
 401 (defun org-export-as-docbook (&optional hidden ext-plist
 402                                         to-buffer body-only pub-dir)
 403   "Export the current buffer as a DocBook file.
 404 If there is an active region, export only the region.  When
 405 HIDDEN is obsolete and does nothing.  EXT-PLIST is a
 406 property list with external parameters overriding org-mode's
 407 default settings, but still inferior to file-local settings.
 408 When TO-BUFFER is non-nil, create a buffer with that name and
 409 export to that buffer.  If TO-BUFFER is the symbol `string',
 410 don't leave any buffer behind but just return the resulting HTML
 411 as a string.  When BODY-ONLY is set, don't produce the file
 412 header and footer, simply return the content of the document (all
 413 top-level sections).  When PUB-DIR is set, use this as the
 414 publishing directory."
 415   (interactive "P")
 416   (run-hooks 'org-export-first-hook)
 417
 418   ;; Make sure we have a file name when we need it.
 419   (when (and (not (or to-buffer body-only))
 420              (not buffer-file-name))
 421     (if (buffer-base-buffer)
 422         (org-set-local 'buffer-file-name
 423                        (with-current-buffer (buffer-base-buffer)
 424                          buffer-file-name))
 425       (error "Need a file name to be able to export")))
 426
 427   (message "Exporting...")
 428   (setq-default org-todo-line-regexp org-todo-line-regexp)
 429   (setq-default org-deadline-line-regexp org-deadline-line-regexp)
 430   (setq-default org-done-keywords org-done-keywords)
 431   (setq-default org-maybe-keyword-time-regexp org-maybe-keyword-time-regexp)
 432   (let* ((opt-plist
 433           (org-export-process-option-filters
 434            (org-combine-plists (org-default-export-plist)
 435                                ext-plist
 436                                (org-infile-export-plist))))
 437          (link-validate (plist-get opt-plist :link-validation-function))
 438          valid
 439          (odd org-odd-levels-only)
 440          (region-p (org-region-active-p))
 441          (rbeg (and region-p (region-beginning)))
 442          (rend (and region-p (region-end)))
 443          (subtree-p
 444           (if (plist-get opt-plist :ignore-subtree-p)
 445               nil
 446             (when region-p
 447               (save-excursion
 448                 (goto-char rbeg)
 449                 (and (org-at-heading-p)
 450                      (>= (org-end-of-subtree t t) rend))))))
 451          (level-offset (if subtree-p
 452                            (save-excursion
 453                              (goto-char rbeg)
 454                              (+ (funcall outline-level)
 455                                 (if org-odd-levels-only 1 0)))
 456                          0))
 457          (opt-plist (setq org-export-opt-plist
 458                           (if subtree-p
 459                               (org-export-add-subtree-options opt-plist rbeg)
 460                             opt-plist)))
 461          ;; The following two are dynamically scoped into other
 462          ;; routines below.
 463          (org-current-export-dir
 464           (or pub-dir (org-export-directory :docbook opt-plist)))
 465          (org-current-export-file buffer-file-name)
 466          (level 0) (line "") (origline "") txt todo
 467          (filename (if to-buffer nil
 468                      (expand-file-name
 469                       (concat
 470                        (file-name-sans-extension
 471                         (or (and subtree-p
 472                                  (org-entry-get (region-beginning)
 473                                                 "EXPORT_FILE_NAME" t))
 474                             (file-name-nondirectory buffer-file-name)))
 475                        org-export-docbook-extension)
 476                       (file-name-as-directory
 477                        (or pub-dir (org-export-directory :docbook opt-plist))))))
 478          (current-dir (if buffer-file-name
 479                           (file-name-directory buffer-file-name)
 480                         default-directory))
 481          (auto-insert nil); Avoid any auto-insert stuff for the new file
 482          (buffer (if to-buffer
 483                      (cond
 484                       ((eq to-buffer 'string)
 485                        (get-buffer-create "*Org DocBook Export*"))
 486                       (t (get-buffer-create to-buffer)))
 487                    (find-file-noselect filename)))
 488          ;; org-levels-open is a global variable
 489          (org-levels-open (make-vector org-level-max nil))
 490          (date (plist-get opt-plist :date))
 491          (author (or (plist-get opt-plist :author)
 492                      user-full-name))
 493          (email (plist-get opt-plist :email))
 494          firstname othername surname
 495          (title (or (and subtree-p (org-export-get-title-from-subtree))
 496                     (plist-get opt-plist :title)
 497                     (and (not
 498                           (plist-get opt-plist :skip-before-1st-heading))
 499                          (org-export-grab-title-from-buffer))
 500                     (and buffer-file-name
 501                          (file-name-sans-extension
 502                           (file-name-nondirectory buffer-file-name)))
 503                     "UNTITLED"))
 504          ;; We will use HTML table formatter to export tables to DocBook
 505          ;; format, so need to set html-table-tag here.
 506          (html-table-tag (plist-get opt-plist :html-table-tag))
 507          (quote-re0   (concat "^ *" org-quote-string "\\( +\\|[ \t]*$\\)"))
 508          (quote-re    (format org-heading-keyword-regexp-format
 509                               org-quote-string))
 510          (inquote     nil)
 511          (infixed     nil)
 512          (inverse     nil)
 513          (llt org-plain-list-ordered-item-terminator)
 514          (email (plist-get opt-plist :email))
 515          (language (plist-get opt-plist :language))
 516          (lang-words  nil)
 517          cnt
 518          (start 0)
 519          (coding-system (and (boundp 'buffer-file-coding-system)
 520                              buffer-file-coding-system))
 521          (coding-system-for-write (or org-export-docbook-coding-system
 522                                       coding-system))
 523          (save-buffer-coding-system (or org-export-docbook-coding-system
 524                                         coding-system))
 525          (charset (and coding-system-for-write
 526                        (fboundp 'coding-system-get)
 527                        (coding-system-get coding-system-for-write
 528                                           'mime-charset)))
 529          (region
 530           (buffer-substring
 531            (if region-p (region-beginning) (point-min))
 532            (if region-p (region-end) (point-max))))
 533          (org-export-footnotes-seen nil)
 534          (org-export-footnotes-data (org-footnote-all-labels 'with-defs))
 535          (lines
 536           (org-split-string
 537            (org-export-preprocess-string
 538             region
 539             :emph-multiline t
 540             :for-backend 'docbook
 541             :skip-before-1st-heading
 542             (plist-get opt-plist :skip-before-1st-heading)
 543             :drawers (plist-get opt-plist :drawers)
 544             :todo-keywords (plist-get opt-plist :todo-keywords)
 545             :tasks (plist-get opt-plist :tasks)
 546             :tags (plist-get opt-plist :tags)
 547             :priority (plist-get opt-plist :priority)
 548             :footnotes (plist-get opt-plist :footnotes)
 549             :timestamps (plist-get opt-plist :timestamps)
 550             :archived-trees
 551             (plist-get opt-plist :archived-trees)
 552             :select-tags (plist-get opt-plist :select-tags)
 553             :exclude-tags (plist-get opt-plist :exclude-tags)
 554             :add-text
 555             (plist-get opt-plist :text)
 556             :LaTeX-fragments
 557             (plist-get opt-plist :LaTeX-fragments))
 558            "[\r\n]"))
 559          ;; Use literal output to show check boxes.
 560          (checkbox-start
 561           (nth 1 (assoc "=" org-export-docbook-emphasis-alist)))
 562          (checkbox-end
 563           (nth 2 (assoc "=" org-export-docbook-emphasis-alist)))
 564          table-open type
 565          table-buffer table-orig-buffer
 566          ind item-type starter
 567          rpl path attr caption label desc descp desc1 desc2 link
 568          fnc item-tag item-number
 569          footref-seen footnote-list
 570          id-file
 571          )
 572
 573     ;; Fine detailed info about author name.
 574     (if (string-match "\\([^ ]+\\) \\(.+ \\)?\\([^ ]+\\)" author)
 575         (progn
 576           (setq firstname (match-string 1 author)
 577                 othername (or (match-string 2 author) "")
 578                 surname (match-string 3 author))))
 579
 580     ;; Get all footnote text.
 581     (setq footnote-list
 582           (org-export-docbook-get-footnotes lines))
 583
 584     (let ((inhibit-read-only t))
 585       (org-unmodified
 586        (remove-text-properties (point-min) (point-max)
 587                                '(:org-license-to-kill t))))
 588
 589     (setq org-min-level (org-get-min-level lines level-offset))
 590     (setq org-last-level org-min-level)
 591     (org-init-section-numbers)
 592
 593     ;; Get and save the date.
 594     (cond
 595      ((and date (string-match "%" date))
 596       (setq date (format-time-string date)))
 597      (date)
 598      (t (setq date (format-time-string "%Y-%m-%d %T %Z"))))
 599
 600     ;; Get the language-dependent settings
 601     (setq lang-words (or (assoc language org-export-language-setup)
 602                          (assoc "en" org-export-language-setup)))
 603
 604     ;; Switch to the output buffer.  Use fundamental-mode for now.  We
 605     ;; could turn on nXML mode later and do some indentation.
 606     (set-buffer buffer)
 607     (let ((inhibit-read-only t)) (erase-buffer))
 608     (fundamental-mode)
 609     (org-install-letbind)
 610
 611     (and (fboundp 'set-buffer-file-coding-system)
 612          (set-buffer-file-coding-system coding-system-for-write))
 613
 614     ;; The main body...
 615     (let ((case-fold-search nil)
 616           (org-odd-levels-only odd))
 617
 618       ;; Create local variables for all options, to make sure all called
 619       ;; functions get the correct information
 620       (mapc (lambda (x)
 621               (set (make-local-variable (nth 2 x))
 622                    (plist-get opt-plist (car x))))
 623             org-export-plist-vars)
 624
 625       ;; Insert DocBook file header, title, and author info.
 626       (unless body-only
 627         (insert org-export-docbook-header)
 628         (if org-export-docbook-doctype
 629             (insert org-export-docbook-doctype))
 630         (insert "<!-- Date: " date " -->\n")
 631         (insert (format "<!-- DocBook XML file generated by Org-mode %s Emacs %s -->\n"
 632                         org-version emacs-major-version))
 633         (insert org-export-docbook-article-header)
 634         (insert (format
 635                  "\n  <title>%s</title>
 636   <info>
 637     <author>
 638       <personname>
 639         <firstname>%s</firstname> <othername>%s</othername> <surname>%s</surname>
 640       </personname>
 641       %s
 642     </author>
 643   </info>\n"
 644                  (org-docbook-expand title)
 645                  firstname othername surname
 646                  (if (and org-export-email-info
 647                           email (string-match "\\S-" email))
 648                      (concat "<email>" email "</email>") "")
 649                  )))
 650
 651       (org-init-section-numbers)
 652
 653       (org-export-docbook-open-para)
 654
 655       ;; Loop over all the lines...
 656       (while (setq line (pop lines) origline line)
 657         (catch 'nextline
 658
 659           ;; End of quote section?
 660           (when (and inquote (string-match org-outline-regexp-bol line))
 661             (insert "]]></programlisting>\n")
 662             (org-export-docbook-open-para)
 663             (setq inquote nil))
 664           ;; Inside a quote section?
 665           (when inquote
 666             (insert (org-docbook-protect line) "\n")
 667             (throw 'nextline nil))
 668
 669           ;; Fixed-width, verbatim lines (examples)
 670           (when (and org-export-with-fixed-width
 671                      (string-match "^[ \t]*:\\(\\([ \t]\\|$\\)\\(.*\\)\\)" line))
 672             (when (not infixed)
 673               (setq infixed t)
 674               (org-export-docbook-close-para-maybe)
 675               (insert "<programlisting><![CDATA["))
 676             (insert (match-string 3 line) "\n")
 677             (when (or (not lines)
 678                       (not (string-match "^[ \t]*\\(:.*\\)"
 679                                          (car lines))))
 680               (setq infixed nil)
 681               (insert "]]></programlisting>\n")
 682               (org-export-docbook-open-para))
 683             (throw 'nextline nil))
 684
 685           ;; Protected HTML
 686           (when (get-text-property 0 'org-protected line)
 687             (let (par (ind (get-text-property 0 'original-indentation line)))
 688               (when (re-search-backward
 689                      "\\(<para>\\)\\([ \t\r\n]*\\)\\=" (- (point) 100) t)
 690                 (setq par (match-string 1))
 691                 (replace-match "\\2\n"))
 692               (insert line "\n")
 693               (while (and lines
 694                           (or (= (length (car lines)) 0)
 695                               (not ind)
 696                               (equal ind (get-text-property 0 'original-indentation (car lines))))
 697                           (or (= (length (car lines)) 0)
 698                               (get-text-property 0 'org-protected (car lines))))
 699                 (insert (pop lines) "\n"))
 700               (and par (insert "<para>\n")))
 701             (throw 'nextline nil))
 702
 703           ;; Start of block quotes and verses
 704           (when (or (equal "ORG-BLOCKQUOTE-START" line)
 705                     (and (equal "ORG-VERSE-START" line)
 706                          (setq inverse t)))
 707             (org-export-docbook-close-para-maybe)
 708             (insert "<blockquote>")
 709             ;; Check whether attribution for this blockquote exists.
 710             (let (tmp1
 711                   attribution
 712                   (end (if inverse "ORG-VERSE-END" "ORG-BLOCKQUOTE-END"))
 713                   (quote-lines nil))
 714               (while (and (setq tmp1 (pop lines))
 715                           (not (equal end tmp1)))
 716                 (push tmp1 quote-lines))
 717               (push tmp1 lines)         ; Put back quote end mark
 718               ;; Check the last line in the quote to see if it contains
 719               ;; the attribution.
 720               (setq tmp1 (pop quote-lines))
 721               (if (string-match "\\(^.*\\)\\(--[ \t]+\\)\\(.+\\)$" tmp1)
 722                   (progn
 723                     (setq attribution (match-string 3 tmp1))
 724                     (when (save-match-data
 725                             (string-match "[^ \t]" (match-string 1 tmp1)))
 726                       (push (match-string 1 tmp1) lines)))
 727                 (push tmp1 lines))
 728               (while (setq tmp1 (pop quote-lines))
 729                 (push tmp1 lines))
 730               (when attribution
 731                 (insert "<attribution>" attribution "</attribution>")))
 732             ;; Insert <literallayout> for verse.
 733             (if inverse
 734                 (insert "\n<literallayout>")
 735               (org-export-docbook-open-para))
 736             (throw 'nextline nil))
 737
 738           ;; End of block quotes
 739           (when (equal "ORG-BLOCKQUOTE-END" line)
 740             (org-export-docbook-close-para-maybe)
 741             (insert "</blockquote>\n")
 742             (org-export-docbook-open-para)
 743             (throw 'nextline nil))
 744
 745           ;; End of verses
 746           (when (equal "ORG-VERSE-END" line)
 747             (insert "</literallayout>\n</blockquote>\n")
 748             (org-export-docbook-open-para)
 749             (setq inverse nil)
 750             (throw 'nextline nil))
 751
 752           ;; Text centering.  Element <para role="centered"> does not
 753           ;; seem to work with FOP, so for now we use <informaltable> to
 754           ;; center the text, which can contain multiple paragraphs.
 755           (when (equal "ORG-CENTER-START" line)
 756             (org-export-docbook-close-para-maybe)
 757             (insert "<informaltable frame=\"none\" colsep=\"0\" rowsep=\"0\">\n"
 758                     "<tgroup align=\"center\" cols=\"1\">\n"
 759                     "<tbody><row><entry>\n")
 760             (org-export-docbook-open-para)
 761             (throw 'nextline nil))
 762
 763           (when (equal "ORG-CENTER-END" line)
 764             (org-export-docbook-close-para-maybe)
 765             (insert "</entry></row></tbody>\n"
 766                     "</tgroup>\n</informaltable>\n")
 767             (org-export-docbook-open-para)
 768             (throw 'nextline nil))
 769
 770           ;; Make targets to anchors.  Note that currently FOP does not
 771           ;; seem to support <anchor> tags when generating PDF output,
 772           ;; but this can be used in DocBook --> HTML conversion.
 773           (setq start 0)
 774           (while (string-match
 775                   "<<<?\\([^<>]*\\)>>>?\\((INVISIBLE)\\)?[ \t]*\n?" line start)
 776             (cond
 777              ((get-text-property (match-beginning 1) 'org-protected line)
 778               (setq start (match-end 1)))
 779              ((match-end 2)
 780               (setq line (replace-match
 781                           (format "@<anchor xml:id=\"%s\"/>"
 782                                   (org-solidify-link-text (match-string 1 line)))
 783                           t t line)))
 784              (t
 785               (setq line (replace-match
 786                           (format "@<anchor xml:id=\"%s\"/>"
 787                                   (org-solidify-link-text (match-string 1 line)))
 788                           t t line)))))
 789
 790           ;; Put time stamps and related keywords into special mark-up
 791           ;; elements.
 792           (setq line (org-export-docbook-handle-time-stamps line))
 793
 794           ;; Replace "&", "<" and ">" by "&amp;", "&lt;" and "&gt;".
 795           ;; Handle @<..> HTML tags (replace "@&gt;..&lt;" by "<..>").
 796           ;; Also handle sub_superscripts and check boxes.
 797           (or (string-match org-table-hline-regexp line)
 798               (setq line (org-docbook-expand line)))
 799
 800           ;; Format the links
 801           (setq start 0)
 802           (while (string-match org-bracket-link-analytic-regexp++ line start)
 803             (setq start (match-beginning 0))
 804             (setq path (save-match-data (org-link-unescape
 805                                          (match-string 3 line))))
 806             (setq type (cond
 807                         ((match-end 2) (match-string 2 line))
 808                         ((save-match-data
 809                            (or (file-name-absolute-p path)
 810                                (string-match "^\\.\\.?/" path)))
 811                          "file")
 812                         (t "internal")))
 813             (setq path (org-extract-attributes (org-link-unescape path)))
 814             (setq attr (get-text-property 0 'org-attributes path)
 815                   caption (get-text-property 0 'org-caption path)
 816                   label (get-text-property 0 'org-label path))
 817             (setq desc1 (if (match-end 5) (match-string 5 line))
 818                   desc2 (if (match-end 2) (concat type ":" path) path)
 819                   descp (and desc1 (not (equal desc1 desc2)))
 820                   desc (or desc1 desc2))
 821             ;; Make an image out of the description if that is so wanted
 822             (when (and descp (org-file-image-p
 823                               desc org-export-docbook-inline-image-extensions))
 824               (save-match-data
 825                 (if (string-match "^file:" desc)
 826                     (setq desc (substring desc (match-end 0))))))
 827             ;; FIXME: do we need to unescape here somewhere?
 828             (cond
 829              ((equal type "internal")
 830               (setq rpl (format "<link linkend=\"%s\">%s</link>"
 831                                 (org-solidify-link-text
 832                                  (save-match-data (org-link-unescape path)) nil)
 833                                 (org-export-docbook-format-desc desc))))
 834              ((and (equal type "id")
 835                    (setq id-file (org-id-find-id-file path)))
 836               ;; This is an id: link to another file (if it was the same file,
 837               ;; it would have become an internal link...)
 838               (save-match-data
 839                 (setq id-file (file-relative-name
 840                                id-file (file-name-directory org-current-export-file)))
 841                 (setq id-file (concat (file-name-sans-extension id-file)
 842                                       org-export-docbook-extension))
 843                 (setq rpl (format "<link xlink:href=\"%s#%s\">%s</link>"
 844                                   id-file path (org-export-docbook-format-desc desc)))))
 845              ((member type '("http" "https"))
 846               ;; Standard URL, just check if we need to inline an image
 847               (if (and (or (eq t org-export-docbook-inline-images)
 848                            (and org-export-docbook-inline-images (not descp)))
 849                        (org-file-image-p
 850                         path org-export-docbook-inline-image-extensions))
 851                   (setq rpl (org-export-docbook-format-image
 852                              (concat type ":" path)))
 853                 (setq link (concat type ":" path))
 854                 (setq rpl (format "<link xlink:href=\"%s\">%s</link>"
 855                                   (org-export-html-format-href link)
 856                                   (org-export-docbook-format-desc desc)))
 857                 ))
 858              ((member type '("ftp" "mailto" "news"))
 859               ;; Standard URL
 860               (setq link (concat type ":" path))
 861               (setq rpl (format "<link xlink:href=\"%s\">%s</link>"
 862                                 (org-export-html-format-href link)
 863                                 (org-export-docbook-format-desc desc))))
 864              ((string= type "coderef")
 865               (setq rpl (format (org-export-get-coderef-format path (and descp desc))
 866                                 (cdr (assoc path org-export-code-refs)))))
 867              ((functionp (setq fnc (nth 2 (assoc type org-link-protocols))))
 868               ;; The link protocol has a function for format the link
 869               (setq rpl
 870                     (save-match-data
 871                       (funcall fnc (org-link-unescape path) desc1 'html))))
 872
 873              ((string= type "file")
 874               ;; FILE link
 875               (let* ((filename path)
 876                      (abs-p (file-name-absolute-p filename))
 877                      thefile file-is-image-p search)
 878                 (save-match-data
 879                   (if (string-match "::\\(.*\\)" filename)
 880                       (setq search (match-string 1 filename)
 881                             filename (replace-match "" t nil filename)))
 882                   (setq valid
 883                         (if (functionp link-validate)
 884                             (funcall link-validate filename current-dir)
 885                           t))
 886                   (setq file-is-image-p
 887                         (org-file-image-p
 888                          filename org-export-docbook-inline-image-extensions))
 889                   (setq thefile (if abs-p (expand-file-name filename) filename))
 890                   ;; Carry over the properties (expand-file-name will
 891                   ;; discard the properties of filename)
 892                   (add-text-properties 0 (1- (length thefile))
 893                                        (list 'org-caption caption
 894                                              'org-attributes attr
 895                                              'org-label label)
 896                                        thefile)
 897                   (when (and org-export-docbook-link-org-files-as-docbook
 898                              (string-match "\\.org$" thefile))
 899                     (setq thefile (concat (substring thefile 0
 900                                                      (match-beginning 0))
 901                                           org-export-docbook-extension))
 902                     (if (and search
 903                              ;; make sure this is can be used as target search
 904                              (not (string-match "^[0-9]*$" search))
 905                              (not (string-match "^\\*" search))
 906                              (not (string-match "^/.*/$" search)))
 907                         (setq thefile (concat thefile "#"
 908                                               (org-solidify-link-text
 909                                                (org-link-unescape search)))))
 910                     (when (string-match "^file:" desc)
 911                       (setq desc (replace-match "" t t desc))
 912                       (if (string-match "\\.org$" desc)
 913                           (setq desc (replace-match "" t t desc))))))
 914                 (setq rpl (if (and file-is-image-p
 915                                    (or (eq t org-export-docbook-inline-images)
 916                                        (and org-export-docbook-inline-images
 917                                             (not descp))))
 918                               (progn
 919                                 (message "image %s %s" thefile org-docbook-para-open)
 920                                 (org-export-docbook-format-image thefile))
 921                             (format "<link xlink:href=\"%s\">%s</link>"
 922                                     thefile (org-export-docbook-format-desc desc))))
 923                 (if (not valid) (setq rpl desc))))
 924
 925              (t
 926               ;; Just publish the path, as default
 927               (setq rpl (concat "&lt;" type ":"
 928                                 (save-match-data (org-link-unescape path))
 929                                 "&gt;"))))
 930             (setq line (replace-match rpl t t line)
 931                   start (+ start (length rpl))))
 932
 933           ;; TODO items: can we do something better?!
 934           (if (and (string-match org-todo-line-regexp line)
 935                    (match-beginning 2))
 936               (setq line
 937                     (concat (substring line 0 (match-beginning 2))
 938                             "[" (match-string 2 line) "]"
 939                             (substring line (match-end 2)))))
 940
 941           ;; Does this contain a reference to a footnote?
 942           (when org-export-with-footnotes
 943             (setq start 0)
 944             (while (string-match "\\([^* \t].*?\\)\\[\\([0-9]+\\)\\]" line start)
 945               ;; Discard protected matches not clearly identified as
 946               ;; footnote markers.
 947               (if (or (get-text-property (match-beginning 2) 'org-protected line)
 948                       (not (get-text-property (match-beginning 2) 'org-footnote line)))
 949                   (setq start (match-end 2))
 950                 (let* ((num (match-string 2 line))
 951                        (footnote-def (assoc num footnote-list)))
 952                   (if (assoc num footref-seen)
 953                       (setq line (replace-match
 954                                   (format "%s<footnoteref linkend=\"%s%s\"/>"
 955                                           (match-string 1 line)
 956                                           org-export-docbook-footnote-id-prefix num)
 957                                   t t line))
 958                     (setq line (replace-match
 959                                 (concat
 960                                  (format "%s<footnote xml:id=\"%s%s\"><para>%s</para></footnote>"
 961                                          (match-string 1 line)
 962                                          org-export-docbook-footnote-id-prefix
 963                                          num
 964                                          (if footnote-def
 965                                              (save-match-data
 966                                                (org-docbook-expand (cdr footnote-def)))
 967                                            (format "FOOTNOTE DEFINITION NOT FOUND: %s" num)))
 968                                  ;; If another footnote is following the
 969                                  ;; current one, add a separator.
 970                                  (if (save-match-data
 971                                        (string-match "\\`\\[[0-9]+\\]"
 972                                                      (substring line (match-end 0))))
 973                                      org-export-docbook-footnote-separator
 974                                    ""))
 975                                 t t line))
 976                     (push (cons num 1) footref-seen))))))
 977
 978           (cond
 979            ((string-match "^\\(\\*+\\)\\(?: +\\(.*?\\)\\)?[ \t]*$" line)
 980             ;; This is a headline
 981             (setq level (org-tr-level (- (match-end 1) (match-beginning 1)
 982                                          level-offset))
 983                   txt (match-string 2 line))
 984             (if (string-match quote-re0 txt)
 985                 (setq txt (replace-match "" t t txt)))
 986             (org-export-docbook-level-start level txt)
 987             ;; QUOTES
 988             (when (string-match quote-re line)
 989               (org-export-docbook-close-para-maybe)
 990               (insert "<programlisting><![CDATA[")
 991               (setq inquote t)))
 992
 993            ;; Tables: since version 4.3 of DocBook DTD, HTML tables are
 994            ;; supported.  We can use existing HTML table exporter code
 995            ;; here.
 996            ((and org-export-with-tables
 997                  (string-match "^\\([ \t]*\\)\\(|\\|\\+-+\\+\\)" line))
 998             (if (not table-open)
 999                 ;; New table starts
1000                 (setq table-open t
1001                       table-buffer nil
1002                       table-orig-buffer nil))
1003             ;; Accumulate lines
1004             (setq table-buffer (cons line table-buffer)
1005                   table-orig-buffer (cons origline table-orig-buffer))
1006             (when (or (not lines)
1007                       (not (string-match "^\\([ \t]*\\)\\(|\\|\\+-+\\+\\)"
1008                                          (car lines))))
1009               (setq table-open nil
1010                     table-buffer (nreverse table-buffer)
1011                     table-orig-buffer (nreverse table-orig-buffer))
1012               (org-export-docbook-close-para-maybe)
1013               (insert (org-export-docbook-finalize-table
1014                        (org-format-table-html table-buffer table-orig-buffer
1015                                               'no-css)))))
1016
1017            ;; Normal lines
1018            (t
1019             ;; This line either is list item or end a list.
1020             (when (when (get-text-property 0 'list-item line)
1021                       (setq line (org-export-docbook-list-line
1022                           line
1023                           (get-text-property 0 'list-item line)
1024                           (get-text-property 0 'list-struct line)
1025                           (get-text-property 0 'list-prevs line)))))
1026
1027             ;; Empty lines start a new paragraph.  If hand-formatted lists
1028             ;; are not fully interpreted, lines starting with "-", "+", "*"
1029             ;; also start a new paragraph.
1030             (if (and (string-match "^ [-+*]-\\|^[ \t]*$" line)
1031                      (not inverse))
1032                 (org-export-docbook-open-para))
1033
1034             ;; Is this the start of a footnote?
1035             (when org-export-with-footnotes
1036               (when (and (boundp 'footnote-section-tag-regexp)
1037                          (string-match (concat "^" footnote-section-tag-regexp)
1038                                        line))
1039                 ;; ignore this line
1040                 (throw 'nextline nil))
1041               ;; These footnote lines have been read and saved before,
1042               ;; ignore them at this time.
1043               (when (string-match "^[ \t]*\\[\\([0-9]+\\)\\]" line)
1044                 (org-export-docbook-close-para-maybe)
1045                 (throw 'nextline nil)))
1046
1047             ;; FIXME: It might be a good idea to add an option to
1048             ;; support line break processing instruction <?linebreak?>.
1049             ;; Org-mode supports line break "\\" in HTML exporter, and
1050             ;; some DocBook users may also want to force line breaks
1051             ;; even though DocBook only supports that in
1052             ;; <literallayout>.
1053
1054             (insert line "\n")))))
1055
1056       ;; Properly close all local lists and other lists
1057       (when inquote
1058         (insert "]]></programlisting>\n")
1059         (org-export-docbook-open-para))
1060
1061       ;; Close all open sections.
1062       (org-export-docbook-level-start 1 nil)
1063
1064       (unless (plist-get opt-plist :buffer-will-be-killed)
1065         (normal-mode)
1066         (if (eq major-mode (default-value 'major-mode))
1067             (nxml-mode)))
1068
1069       ;; Remove empty paragraphs. Replace them with a newline.
1070       (goto-char (point-min))
1071       (while (re-search-forward
1072               "[ \r\n\t]*\\(<para>\\)[ \r\n\t]*</para>[ \r\n\t]*" nil t)
1073         (when (not (get-text-property (match-beginning 1) 'org-protected))
1074           (replace-match "\n")
1075           (backward-char 1)))
1076       ;; Fill empty sections with <para></para>.  This is to make sure
1077       ;; that the DocBook document generated is valid and well-formed.
1078       (goto-char (point-min))
1079       (while (re-search-forward
1080               "</title>\\([ \r\n\t]*\\)</section>" nil t)
1081         (when (not (get-text-property (match-beginning 0) 'org-protected))
1082           (replace-match "\n<para></para>\n" nil nil nil 1)))
1083       ;; Insert the last closing tag.
1084       (goto-char (point-max))
1085       (unless body-only
1086         (insert "</article>"))
1087       (run-hooks 'org-export-docbook-final-hook)
1088       (or to-buffer (save-buffer))
1089       (goto-char (point-min))
1090       (or (org-export-push-to-kill-ring "DocBook")
1091           (message "Exporting... done"))
1092       (if (eq to-buffer 'string)
1093           (prog1 (buffer-substring (point-min) (point-max))
1094             (kill-buffer (current-buffer)))
1095         (current-buffer)))))
1096
1097 (defun org-export-docbook-open-para ()
1098   "Insert <para>, but first close previous paragraph if any."
1099   (org-export-docbook-close-para-maybe)
1100   (insert "\n<para>")
1101   (setq org-docbook-para-open t))
1102
1103 (defun org-export-docbook-close-para-maybe ()
1104   "Close DocBook paragraph if there is one open."
1105   (when org-docbook-para-open
1106     (insert "</para>\n")
1107     (setq org-docbook-para-open nil)))
1108
1109 (defun org-export-docbook-close-li (&optional type)
1110   "Close list if necessary."
1111   (org-export-docbook-close-para-maybe)
1112   (if (equal type "d")
1113       (insert "</listitem></varlistentry>\n")
1114     (insert "</listitem>\n")))
1115
1116 (defun org-export-docbook-level-start (level title)
1117   "Insert a new level in DocBook export.
1118 When TITLE is nil, just close all open levels."
1119   (org-export-docbook-close-para-maybe)
1120   (let* ((target (and title (org-get-text-property-any 0 'target title)))
1121          (l org-level-max)
1122          section-number)
1123     (while (>= l level)
1124       (if (aref org-levels-open (1- l))
1125           (progn
1126             (insert "</section>\n")
1127             (aset org-levels-open (1- l) nil)))
1128       (setq l (1- l)))
1129     (when title
1130       ;; If title is nil, this means this function is called to close
1131       ;; all levels, so the rest is done only if title is given.
1132       ;;
1133       ;; Format tags: put them into a superscript like format.
1134       (when (string-match (org-re "\\(:[[:alnum:]_@#%:]+:\\)[ \t]*$") title)
1135         (setq title
1136               (replace-match
1137                (if org-export-with-tags
1138                    (save-match-data
1139                      (concat
1140                       "<superscript>"
1141                       (match-string 1 title)
1142                       "</superscript>"))
1143                  "")
1144                t t title)))
1145       (aset org-levels-open (1- level) t)
1146       (setq section-number (org-section-number level))
1147       (insert (format "\n<section xml:id=\"%s%s\">\n<title>%s</title>"
1148                       org-export-docbook-section-id-prefix
1149                       (replace-regexp-in-string "\\." "_" section-number)
1150                       title))
1151       (org-export-docbook-open-para))))
1152
1153 (defun org-docbook-expand (string)
1154   "Prepare STRING for DocBook export.
1155 Applies all active conversions.  If there are links in the
1156 string, don't modify these."
1157   (let* ((re (concat org-bracket-link-regexp "\\|"
1158                      (org-re "[ \t]+\\(:[[:alnum:]_@#%:]+:\\)[ \t]*$")))
1159          m s l res)
1160     (while (setq m (string-match re string))
1161       (setq s (substring string 0 m)
1162             l (match-string 0 string)
1163             string (substring string (match-end 0)))
1164       (push (org-docbook-do-expand s) res)
1165       (push l res))
1166     (push (org-docbook-do-expand string) res)
1167     (apply 'concat (nreverse res))))
1168
1169 (defun org-docbook-do-expand (s)
1170   "Apply all active conversions to translate special ASCII to DocBook."
1171   (setq s (org-html-protect s))
1172   (while (string-match "@&lt;\\([^&]*\\)&gt;" s)
1173     (setq s (replace-match "<\\1>" t nil s)))
1174   (if org-export-with-emphasize
1175       (setq s (org-export-docbook-convert-emphasize s)))
1176   (if org-export-with-special-strings
1177       (setq s (org-export-docbook-convert-special-strings s)))
1178   (if org-export-with-sub-superscripts
1179       (setq s (org-export-docbook-convert-sub-super s)))
1180   (if org-export-with-TeX-macros
1181       (let ((start 0) wd rep)
1182         (while (setq start (string-match "\\\\\\([a-zA-Z]+\\)\\({}\\)?"
1183                                          s start))
1184           (if (get-text-property (match-beginning 0) 'org-protected s)
1185               (setq start (match-end 0))
1186             (setq wd (match-string 1 s))
1187             (if (setq rep (org-entity-get-representation wd 'html))
1188                 (setq s (replace-match rep t t s))
1189               (setq start (+ start (length wd))))))))
1190   s)
1191
1192 (defun org-export-docbook-format-desc (desc)
1193   "Make sure DESC is valid as a description in a link."
1194   (save-match-data
1195     (org-docbook-do-expand desc)))
1196
1197 (defun org-export-docbook-convert-emphasize (string)
1198   "Apply emphasis for DocBook exporting."
1199   (let ((s 0) rpl)
1200     (while (string-match org-emph-re string s)
1201       (if (not (equal
1202                 (substring string (match-beginning 3) (1+ (match-beginning 3)))
1203                 (substring string (match-beginning 4) (1+ (match-beginning 4)))))
1204           (setq s (match-beginning 0)
1205                 rpl
1206                 (concat
1207                  (match-string 1 string)
1208                  (nth 1 (assoc (match-string 3 string)
1209                                org-export-docbook-emphasis-alist))
1210                  (match-string 4 string)
1211                  (nth 2 (assoc (match-string 3 string)
1212                                org-export-docbook-emphasis-alist))
1213                  (match-string 5 string))
1214                 string (replace-match rpl t t string)
1215                 s (+ s (- (length rpl) 2)))
1216         (setq s (1+ s))))
1217     string))
1218
1219 (defun org-docbook-protect (string)
1220   (org-html-protect string))
1221
1222 ;; For now, simply return string as it is.
1223 (defun org-export-docbook-convert-special-strings (string)
1224   "Convert special characters in STRING to DocBook."
1225   string)
1226
1227 (defun org-export-docbook-get-footnotes (lines)
1228   "Given a list of LINES, return a list of alist footnotes."
1229   (let ((list nil) line)
1230     (while (setq line (pop lines))
1231       (if (string-match "^[ \t]*\\[\\([0-9]+\\)\\] \\(.+\\)" line)
1232           (push (cons (match-string 1 line) (match-string 2 line))
1233                 list)))
1234     list))
1235
1236 (defun org-export-docbook-format-image (src)
1237   "Create image element in DocBook."
1238   (save-match-data
1239     (let* ((caption (org-find-text-property-in-string 'org-caption src))
1240            (attr (or (org-find-text-property-in-string 'org-attributes src)
1241                      ""))
1242            (label (org-find-text-property-in-string 'org-label src))
1243            (default-attr org-export-docbook-default-image-attributes)
1244            tmp)
1245       (setq caption (and caption (org-html-do-expand caption)))
1246       (while (setq tmp (pop default-attr))
1247         (if (not (string-match (concat (car tmp) "=") attr))
1248             (setq attr (concat attr " " (car tmp) "=" (cdr tmp)))))
1249       (format "<mediaobject%s>
1250 <imageobject>\n<imagedata fileref=\"%s\" %s/>\n</imageobject>
1251 %s</mediaobject>"
1252               (if label (concat " xml:id=\"" label "\"") "")
1253               src attr
1254               (if caption
1255                   (concat "<caption>\n<para>"
1256                           caption
1257                           "</para>\n</caption>\n")
1258                 "")
1259               ))))
1260
1261 (defun org-export-docbook-preprocess (parameters)
1262   "Extra preprocessing work for DocBook export."
1263   ;; Merge lines starting with "\par" to one line.  Such lines are
1264   ;; regarded as the continuation of a long footnote.
1265   (goto-char (point-min))
1266   (while (re-search-forward "\n\\(\\\\par\\>\\)" nil t)
1267     (if (not (get-text-property (match-beginning 1) 'org-protected))
1268         (replace-match ""))))
1269
1270 (defun org-export-docbook-finalize-table (table)
1271   "Clean up TABLE and turn it into DocBook format.
1272 This function adds a label to the table if it is available, and
1273 also changes TABLE to informaltable if caption does not exist.
1274 TABLE is a string containing the HTML code generated by
1275 `org-format-table-html' for a table in Org-mode buffer."
1276   (let (table-with-label)
1277     ;; Get the label if it exists, and move it into the <table> element.
1278     (setq table-with-label
1279           (if (string-match
1280                "^<table \\(\\(.\\|\n\\)+\\)<a name=\"\\(.+\\)\" id=\".+\"></a>\n\\(\\(.\\|\n\\)+\\)</table>"
1281                table)
1282               (replace-match (concat "<table xml:id=\"" (match-string 3 table) "\" "
1283                                      (match-string 1 table)
1284                                      (match-string 4 table)
1285                                      "</table>")
1286                              nil t table)
1287             table))
1288     ;; Change <table> into <informaltable> if caption does not exist.
1289     (if (string-match
1290          "^<table \\(\\(.\\|\n\\)+\\)<caption></caption>\n\\(\\(.\\|\n\\)+\\)</table>"
1291          table-with-label)
1292         (replace-match (concat "<informaltable "
1293                                (match-string 1 table-with-label)
1294                                (match-string 3 table-with-label)
1295                                "</informaltable>")
1296                        nil t table-with-label)
1297       table-with-label)))
1298
1299 ;; Note: This function is very similar to
1300 ;; org-export-html-convert-sub-super.  They can be merged in the future.
1301 (defun org-export-docbook-convert-sub-super (string)
1302   "Convert sub- and superscripts in STRING for DocBook."
1303   (let (key c (s 0) (requireb (eq org-export-with-sub-superscripts '{})))
1304     (while (string-match org-match-substring-regexp string s)
1305       (cond
1306        ((and requireb (match-end 8)) (setq s (match-end 2)))
1307        ((get-text-property  (match-beginning 2) 'org-protected string)
1308         (setq s (match-end 2)))
1309        (t
1310         (setq s (match-end 1)
1311               key (if (string= (match-string 2 string) "_")
1312                       "subscript"
1313                     "superscript")
1314               c (or (match-string 8 string)
1315                     (match-string 6 string)
1316                     (match-string 5 string))
1317               string (replace-match
1318                       (concat (match-string 1 string)
1319                               "<" key ">" c "</" key ">")
1320                       t t string)))))
1321     (while (string-match "\\\\\\([_^]\\)" string)
1322       (setq string (replace-match (match-string 1 string) t t string)))
1323     string))
1324
1325 (defun org-export-docbook-protect-tags (string)
1326   "Change ``<...>'' in string STRING into ``@<...>''.
1327 This is normally needed when STRING contains DocBook elements
1328 that need to be preserved in later phase of DocBook exporting."
1329   (let ((start 0))
1330     (while (string-match "<\\([^>]*\\)>" string start)
1331       (setq string (replace-match
1332                     "@<\\1>" t nil string)
1333             start (match-end 0)))
1334     string))
1335
1336 (defun org-export-docbook-handle-time-stamps (line)
1337   "Format time stamps in string LINE."
1338   (let (replaced
1339         (kw-markup (org-export-docbook-protect-tags
1340                     org-export-docbook-keywords-markup))
1341         (ts-markup (org-export-docbook-protect-tags
1342                     org-export-docbook-timestamp-markup)))
1343     (while (string-match org-maybe-keyword-time-regexp line)
1344       (setq replaced
1345             (concat replaced
1346                     (substring line 0 (match-beginning 0))
1347                     (if (match-end 1)
1348                         (format kw-markup
1349                                 (match-string 1 line)))
1350                     " "
1351                     (format ts-markup
1352                             (substring (org-translate-time
1353                                         (match-string 3 line)) 1 -1)))
1354             line (substring line (match-end 0))))
1355     (concat replaced line)))
1356
1357 (defun org-export-docbook-list-line (line pos struct prevs)
1358   "Insert list syntax in export buffer. Return LINE, maybe modified.
1359
1360 POS is the item position or line position the line had before
1361 modifications to buffer. STRUCT is the list structure. PREVS is
1362 the alist of previous items."
1363   (let* ((get-type
1364           (function
1365            ;; Translate type of list containing POS to "ordered",
1366            ;; "variable" or "itemized".
1367            (lambda (pos struct prevs)
1368              (let ((type (org-list-get-list-type pos struct prevs)))
1369                (cond
1370                 ((eq 'ordered type) "ordered")
1371                 ((eq 'descriptive type) "variable")
1372                 (t "itemized"))))))
1373          (get-closings
1374           (function
1375            ;; Return list of all items and sublists ending at POS, in
1376            ;; reverse order.
1377            (lambda (pos)
1378              (let (out)
1379                (catch 'exit
1380                  (mapc (lambda (e)
1381                          (let ((end (nth 6 e))
1382                                (item (car e)))
1383                            (cond
1384                             ((= end pos) (push item out))
1385                             ((>= item pos) (throw 'exit nil)))))
1386                        struct))
1387                out)))))
1388     ;; First close any previous item, or list, ending at POS.
1389     (mapc (lambda (e)
1390             (let* ((lastp (= (org-list-get-last-item e struct prevs) e))
1391                    (first-item (org-list-get-list-begin e struct prevs))
1392                    (type (funcall get-type first-item struct prevs)))
1393               ;; Ending for every item
1394               (org-export-docbook-close-para-maybe)
1395               (insert (if (equal type "variable")
1396                           "</listitem></varlistentry>\n"
1397                         "</listitem>\n"))
1398               ;; We're ending last item of the list: end list.
1399               (when lastp
1400                 (insert (format "</%slist>\n" type))
1401                 (org-export-docbook-open-para))))
1402           (funcall get-closings pos))
1403     (cond
1404      ;; At an item: insert appropriate tags in export buffer.
1405      ((assq pos struct)
1406       (string-match (concat "[ \t]*\\(\\S-+[ \t]*\\)"
1407                             "\\(?:\\[@\\(?:start:\\)?\\([0-9]+\\|[a-zA-Z]\\)\\][ \t]*\\)?"
1408                             "\\(?:\\(\\[[ X-]\\]\\)[ \t]+\\)?"
1409                             "\\(?:\\(.*\\)[ \t]+::\\(?:[ \t]+\\|$\\)\\)?"
1410                             "\\(.*\\)")
1411                     line)
1412       (let* ((checkbox (match-string 3 line))
1413              (desc-tag (or (match-string 4 line) "???"))
1414              (body (match-string 5 line))
1415              (list-beg (org-list-get-list-begin pos struct prevs))
1416              (firstp (= list-beg pos))
1417              ;; Always refer to first item to determine list type, in
1418              ;; case list is ill-formed.
1419              (type (funcall get-type list-beg struct prevs))
1420              ;; Special variables for ordered lists.
1421              (counter (let ((count-tmp (org-list-get-counter pos struct)))
1422                         (cond
1423                          ((not count-tmp) nil)
1424                          ((string-match "[A-Za-z]" count-tmp)
1425                           (- (string-to-char (upcase count-tmp)) 64))
1426                          ((string-match "[0-9]+" count-tmp)
1427                           count-tmp)))))
1428         ;; When FIRSTP, a new list or sub-list is starting.
1429         (when firstp
1430           (org-export-docbook-close-para-maybe)
1431           (insert (format "<%slist>\n" type)))
1432         (insert (cond
1433                  ((equal type "variable")
1434                   (format "<varlistentry><term>%s</term><listitem>" desc-tag))
1435                  ((and (equal type "ordered") counter)
1436                   (format "<listitem override=\"%s\">" counter))
1437                  (t "<listitem>")))
1438         ;; For DocBook, we need to open a para right after tag
1439         ;; <listitem>.
1440         (org-export-docbook-open-para)
1441         ;; If line had a checkbox, some additional modification is required.
1442         (when checkbox (setq body (concat checkbox " " body)))
1443         ;; Return modified line
1444         body))
1445      ;; At a list ender:  normal text follows: need <para>.
1446      ((equal "ORG-LIST-END-MARKER" line)
1447       (org-export-docbook-open-para)
1448       (throw 'nextline nil))
1449      ;; Not at an item: return line unchanged (side-effects only).
1450      (t line))))
1451
1452 (provide 'org-docbook)
1453
1454 ;;; org-docbook.el ends here