lisp/org-docbook.el

   1 ;;; org-docbook.el --- DocBook exporter for org-mode
   2 ;;
   3 ;; Copyright (C) 2007-2011 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   :type 'string)
 154
 155 (defcustom org-export-docbook-emphasis-alist
 156   `(("*" "<emphasis role=\"bold\">" "</emphasis>")
 157     ("/" "<emphasis>" "</emphasis>")
 158     ("_" "<emphasis role=\"underline\">" "</emphasis>")
 159     ("=" "<code>" "</code>")
 160     ("~" "<literal>" "</literal>")
 161     ("+" "<emphasis role=\"strikethrough\">" "</emphasis>"))
 162   "A list of DocBook expressions to convert emphasis fontifiers.
 163 Each element of the list is a list of three elements.
 164 The first element is the character used as a marker for fontification.
 165 The second element is a formatting string to wrap fontified text with.
 166 The third element decides whether to protect converted text from other
 167 conversions."
 168   :group 'org-export-docbook
 169   :type 'alist)
 170
 171 (defcustom org-export-docbook-default-image-attributes
 172   `(("align" . "\"center\"")
 173     ("valign". "\"middle\""))
 174   "Alist of default DocBook image attributes.
 175 These attributes will be inserted into element <imagedata> by
 176 default, but users can override them using `#+ATTR_DocBook:'."
 177   :group 'org-export-docbook
 178   :type 'alist)
 179
 180 (defcustom org-export-docbook-inline-image-extensions
 181   '("jpeg" "jpg" "png" "gif" "svg")
 182   "Extensions of image files that can be inlined into DocBook."
 183   :group 'org-export-docbook
 184   :type '(repeat (string :tag "Extension")))
 185
 186 (defcustom org-export-docbook-coding-system nil
 187   "Coding system for DocBook XML files."
 188   :group 'org-export-docbook
 189   :type 'coding-system)
 190
 191 (defcustom org-export-docbook-xslt-stylesheet nil
 192   "File name of the XSLT stylesheet used by DocBook exporter.
 193 This XSLT stylesheet is used by
 194 `org-export-docbook-xslt-proc-command' to generate the Formatting
 195 Object (FO) files.  You can use either `fo/docbook.xsl' that
 196 comes with DocBook, or any customization layer you may have."
 197   :group 'org-export-docbook
 198   :type 'string)
 199
 200 (defcustom org-export-docbook-xslt-proc-command nil
 201   "Format of XSLT processor command used by DocBook exporter.
 202 This command is used to process a DocBook XML file to generate
 203 the Formatting Object (FO) file.
 204
 205 The value of this variable should be a format control string that
 206 includes three arguments: `%i', `%o', and `%s'.  During exporting
 207 time, `%i' is replaced by the input DocBook XML file name, `%o'
 208 is replaced by the output FO file name, and `%s' is replaced by
 209 `org-export-docbook-xslt-stylesheet' (or the #+XSLT option if it
 210 is specified in the Org file).
 211
 212 For example, if you use Saxon as the XSLT processor, you may want
 213 to set the variable to
 214
 215   \"java com.icl.saxon.StyleSheet -o %o %i %s\"
 216
 217 If you use Xalan, you can set it to
 218
 219   \"java org.apache.xalan.xslt.Process -out %o -in %i -xsl %s\"
 220
 221 For xsltproc, the following string should work:
 222
 223   \"xsltproc --output %o %s %i\"
 224
 225 You can include additional stylesheet parameters in this command.
 226 Just make sure that they meet the syntax requirement of each
 227 processor."
 228   :group 'org-export-docbook
 229   :type 'string)
 230
 231 (defcustom org-export-docbook-xsl-fo-proc-command nil
 232   "Format of XSL-FO processor command used by DocBook exporter.
 233 This command is used to process a Formatting Object (FO) file to
 234 generate the PDF file.
 235
 236 The value of this variable should be a format control string that
 237 includes two arguments: `%i' and `%o'.  During exporting time,
 238 `%i' is replaced by the input FO file name, and `%o' is replaced
 239 by the output PDF file name.
 240
 241 For example, if you use FOP as the XSL-FO processor, you can set
 242 the variable to
 243
 244   \"fop %i %o\""
 245   :group 'org-export-docbook
 246   :type 'string)
 247
 248 (defcustom org-export-docbook-keywords-markup "<literal>%s</literal>"
 249   "A printf format string to be applied to keywords by DocBook exporter."
 250   :group 'org-export-docbook
 251   :type 'string)
 252
 253 (defcustom org-export-docbook-timestamp-markup "<emphasis>%s</emphasis>"
 254   "A printf format string to be applied to time stamps by DocBook exporter."
 255   :group 'org-export-docbook
 256   :type 'string)
 257
 258 ;;; Hooks
 259
 260 (defvar org-export-docbook-final-hook nil
 261   "Hook run at the end of DocBook export, in the new buffer.")
 262
 263 ;;; Autoload functions:
 264
 265 ;;;###autoload
 266 (defun org-export-as-docbook-batch ()
 267   "Call `org-export-as-docbook' in batch style.
 268 This function can be used in batch processing.
 269
 270 For example:
 271
 272 $ emacs --batch
 273         --load=$HOME/lib/emacs/org.el
 274         --visit=MyOrgFile.org --funcall org-export-as-docbook-batch"
 275   (org-export-as-docbook 'hidden))
 276
 277 ;;;###autoload
 278 (defun org-export-as-docbook-to-buffer ()
 279   "Call `org-export-as-docbook' with output to a temporary buffer.
 280 No file is created."
 281   (interactive)
 282   (org-export-as-docbook nil nil "*Org DocBook Export*")
 283   (when org-export-show-temporary-export-buffer
 284     (switch-to-buffer-other-window "*Org DocBook Export*")))
 285
 286 ;;;###autoload
 287 (defun org-replace-region-by-docbook (beg end)
 288   "Replace the region from BEG to END with its DocBook export.
 289 It assumes the region has `org-mode' syntax, and then convert it to
 290 DocBook.  This can be used in any buffer.  For example, you could
 291 write an itemized list in `org-mode' syntax in an DocBook buffer and
 292 then use this command to convert it."
 293   (interactive "r")
 294   (let (reg docbook buf)
 295     (save-window-excursion
 296       (if (eq major-mode 'org-mode)
 297           (setq docbook (org-export-region-as-docbook
 298                          beg end t 'string))
 299         (setq reg (buffer-substring beg end)
 300               buf (get-buffer-create "*Org tmp*"))
 301         (with-current-buffer buf
 302           (erase-buffer)
 303           (insert reg)
 304           (org-mode)
 305           (setq docbook (org-export-region-as-docbook
 306                          (point-min) (point-max) t 'string)))
 307         (kill-buffer buf)))
 308     (delete-region beg end)
 309     (insert docbook)))
 310
 311 ;;;###autoload
 312 (defun org-export-region-as-docbook (beg end &optional body-only buffer)
 313   "Convert region from BEG to END in `org-mode' buffer to DocBook.
 314 If prefix arg BODY-ONLY is set, omit file header and footer and
 315 only produce the region of converted text, useful for
 316 cut-and-paste operations.  If BUFFER is a buffer or a string,
 317 use/create that buffer as a target of the converted DocBook.  If
 318 BUFFER is the symbol `string', return the produced DocBook as a
 319 string and leave not buffer behind.  For example, a Lisp program
 320 could call this function in the following way:
 321
 322   (setq docbook (org-export-region-as-docbook beg end t 'string))
 323
 324 When called interactively, the output buffer is selected, and shown
 325 in a window.  A non-interactive call will only return the buffer."
 326   (interactive "r\nP")
 327   (when (org-called-interactively-p 'any)
 328     (setq buffer "*Org DocBook Export*"))
 329   (let ((transient-mark-mode t)
 330         (zmacs-regions t)
 331         rtn)
 332     (goto-char end)
 333     (set-mark (point)) ;; To activate the region
 334     (goto-char beg)
 335     (setq rtn (org-export-as-docbook
 336                nil nil
 337                buffer body-only))
 338     (if (fboundp 'deactivate-mark) (deactivate-mark))
 339     (if (and (org-called-interactively-p 'any) (bufferp rtn))
 340         (switch-to-buffer-other-window rtn)
 341       rtn)))
 342
 343 ;;;###autoload
 344 (defun org-export-as-docbook-pdf (&optional hidden ext-plist
 345                                             to-buffer body-only pub-dir)
 346   "Export as DocBook XML file, and generate PDF file."
 347   (interactive "P")
 348   (if (or (not org-export-docbook-xslt-proc-command)
 349           (not (string-match "%[ios].+%[ios].+%[ios]" org-export-docbook-xslt-proc-command)))
 350       (error "XSLT processor command is not set correctly"))
 351   (if (or (not org-export-docbook-xsl-fo-proc-command)
 352           (not (string-match "%[io].+%[io]" org-export-docbook-xsl-fo-proc-command)))
 353       (error "XSL-FO processor command is not set correctly"))
 354   (message "Exporting to PDF...")
 355   (let* ((wconfig (current-window-configuration))
 356          (opt-plist
 357           (org-export-process-option-filters
 358            (org-combine-plists (org-default-export-plist)
 359                                ext-plist
 360                                (org-infile-export-plist))))
 361          (docbook-buf (org-export-as-docbook hidden ext-plist
 362                                              to-buffer body-only pub-dir))
 363          (filename (buffer-file-name docbook-buf))
 364          (base (file-name-sans-extension filename))
 365          (fofile (concat base ".fo"))
 366          (pdffile (concat base ".pdf")))
 367     (and (file-exists-p pdffile) (delete-file pdffile))
 368     (message "Processing DocBook XML file...")
 369     (shell-command (format-spec org-export-docbook-xslt-proc-command
 370                                 (format-spec-make
 371                                  ?i (shell-quote-argument filename)
 372                                  ?o (shell-quote-argument fofile)
 373                                  ?s (shell-quote-argument
 374                                      (or (plist-get opt-plist :xslt)
 375                                          org-export-docbook-xslt-stylesheet)))))
 376     (shell-command (format-spec org-export-docbook-xsl-fo-proc-command
 377                                 (format-spec-make
 378                                  ?i (shell-quote-argument fofile)
 379                                  ?o (shell-quote-argument pdffile))))
 380     (message "Processing DocBook file...done")
 381     (if (not (file-exists-p pdffile))
 382         (error "PDF file was not produced")
 383       (set-window-configuration wconfig)
 384       (message "Exporting to PDF...done")
 385       pdffile)))
 386
 387 ;;;###autoload
 388 (defun org-export-as-docbook-pdf-and-open ()
 389   "Export as DocBook XML file, generate PDF file, and open it."
 390   (interactive)
 391   (let ((pdffile (org-export-as-docbook-pdf)))
 392     (if pdffile
 393         (org-open-file pdffile)
 394       (error "PDF file was not produced"))))
 395
 396 (defvar org-heading-keyword-regexp-format) ; defined in org.el
 397
 398 ;;;###autoload
 399 (defun org-export-as-docbook (&optional hidden ext-plist
 400                                         to-buffer body-only pub-dir)
 401   "Export the current buffer as a DocBook file.
 402 If there is an active region, export only the region.  When
 403 HIDDEN is obsolete and does nothing.  EXT-PLIST is a
 404 property list with external parameters overriding org-mode's
 405 default settings, but still inferior to file-local settings.
 406 When TO-BUFFER is non-nil, create a buffer with that name and
 407 export to that buffer.  If TO-BUFFER is the symbol `string',
 408 don't leave any buffer behind but just return the resulting HTML
 409 as a string.  When BODY-ONLY is set, don't produce the file
 410 header and footer, simply return the content of the document (all
 411 top-level sections).  When PUB-DIR is set, use this as the
 412 publishing directory."
 413   (interactive "P")
 414   (run-hooks 'org-export-first-hook)
 415
 416   ;; Make sure we have a file name when we need it.
 417   (when (and (not (or to-buffer body-only))
 418              (not buffer-file-name))
 419     (if (buffer-base-buffer)
 420         (org-set-local 'buffer-file-name
 421                        (with-current-buffer (buffer-base-buffer)
 422                          buffer-file-name))
 423       (error "Need a file name to be able to export")))
 424
 425   (message "Exporting...")
 426   (setq-default org-todo-line-regexp org-todo-line-regexp)
 427   (setq-default org-deadline-line-regexp org-deadline-line-regexp)
 428   (setq-default org-done-keywords org-done-keywords)
 429   (setq-default org-maybe-keyword-time-regexp org-maybe-keyword-time-regexp)
 430   (let* ((opt-plist
 431           (org-export-process-option-filters
 432            (org-combine-plists (org-default-export-plist)
 433                                ext-plist
 434                                (org-infile-export-plist))))
 435          (link-validate (plist-get opt-plist :link-validation-function))
 436          valid
 437          (odd org-odd-levels-only)
 438          (region-p (org-region-active-p))
 439          (rbeg (and region-p (region-beginning)))
 440          (rend (and region-p (region-end)))
 441          (subtree-p
 442           (if (plist-get opt-plist :ignore-subtree-p)
 443               nil
 444             (when region-p
 445               (save-excursion
 446                 (goto-char rbeg)
 447                 (and (org-at-heading-p)
 448                      (>= (org-end-of-subtree t t) rend))))))
 449          (level-offset (if subtree-p
 450                            (save-excursion
 451                              (goto-char rbeg)
 452                              (+ (funcall outline-level)
 453                                 (if org-odd-levels-only 1 0)))
 454                          0))
 455          (opt-plist (setq org-export-opt-plist
 456                           (if subtree-p
 457                               (org-export-add-subtree-options opt-plist rbeg)
 458                             opt-plist)))
 459          ;; The following two are dynamically scoped into other
 460          ;; routines below.
 461          (org-current-export-dir
 462           (or pub-dir (org-export-directory :docbook opt-plist)))
 463          (org-current-export-file buffer-file-name)
 464          (level 0) (line "") (origline "") txt todo
 465          (filename (if to-buffer nil
 466                      (expand-file-name
 467                       (concat
 468                        (file-name-sans-extension
 469                         (or (and subtree-p
 470                                  (org-entry-get (region-beginning)
 471                                                 "EXPORT_FILE_NAME" t))
 472                             (file-name-nondirectory buffer-file-name)))
 473                        org-export-docbook-extension)
 474                       (file-name-as-directory
 475                        (or pub-dir (org-export-directory :docbook opt-plist))))))
 476          (current-dir (if buffer-file-name
 477                           (file-name-directory buffer-file-name)
 478                         default-directory))
 479          (auto-insert nil); Avoid any auto-insert stuff for the new file
 480          (buffer (if to-buffer
 481                      (cond
 482                       ((eq to-buffer 'string)
 483                        (get-buffer-create "*Org DocBook Export*"))
 484                       (t (get-buffer-create to-buffer)))
 485                    (find-file-noselect filename)))
 486          ;; org-levels-open is a global variable
 487          (org-levels-open (make-vector org-level-max nil))
 488          (date (plist-get opt-plist :date))
 489          (author (or (plist-get opt-plist :author)
 490                      user-full-name))
 491          (email (plist-get opt-plist :email))
 492          firstname othername surname
 493          (title (or (and subtree-p (org-export-get-title-from-subtree))
 494                     (plist-get opt-plist :title)
 495                     (and (not
 496                           (plist-get opt-plist :skip-before-1st-heading))
 497                          (org-export-grab-title-from-buffer))
 498                     (and buffer-file-name
 499                          (file-name-sans-extension
 500                           (file-name-nondirectory buffer-file-name)))
 501                     "UNTITLED"))
 502          ;; We will use HTML table formatter to export tables to DocBook
 503          ;; format, so need to set html-table-tag here.
 504          (html-table-tag (plist-get opt-plist :html-table-tag))
 505          (quote-re0   (concat "^ *" org-quote-string "\\( +\\|[ \t]*$\\)"))
 506          (quote-re    (format org-heading-keyword-regexp-format
 507                               org-quote-string))
 508          (inquote     nil)
 509          (infixed     nil)
 510          (inverse     nil)
 511          (llt org-plain-list-ordered-item-terminator)
 512          (email (plist-get opt-plist :email))
 513          (language (plist-get opt-plist :language))
 514          (lang-words  nil)
 515          cnt
 516          (start 0)
 517          (coding-system (and (boundp 'buffer-file-coding-system)
 518                              buffer-file-coding-system))
 519          (coding-system-for-write (or org-export-docbook-coding-system
 520                                       coding-system))
 521          (save-buffer-coding-system (or org-export-docbook-coding-system
 522                                         coding-system))
 523          (charset (and coding-system-for-write
 524                        (fboundp 'coding-system-get)
 525                        (coding-system-get coding-system-for-write
 526                                           'mime-charset)))
 527          (region
 528           (buffer-substring
 529            (if region-p (region-beginning) (point-min))
 530            (if region-p (region-end) (point-max))))
 531          (org-export-footnotes-seen nil)
 532          (org-export-footnotes-data (org-footnote-all-labels 'with-defs))
 533          (lines
 534           (org-split-string
 535            (org-export-preprocess-string
 536             region
 537             :emph-multiline t
 538             :for-backend 'docbook
 539             :skip-before-1st-heading
 540             (plist-get opt-plist :skip-before-1st-heading)
 541             :drawers (plist-get opt-plist :drawers)
 542             :todo-keywords (plist-get opt-plist :todo-keywords)
 543             :tasks (plist-get opt-plist :tasks)
 544             :tags (plist-get opt-plist :tags)
 545             :priority (plist-get opt-plist :priority)
 546             :footnotes (plist-get opt-plist :footnotes)
 547             :timestamps (plist-get opt-plist :timestamps)
 548             :archived-trees
 549             (plist-get opt-plist :archived-trees)
 550             :select-tags (plist-get opt-plist :select-tags)
 551             :exclude-tags (plist-get opt-plist :exclude-tags)
 552             :add-text
 553             (plist-get opt-plist :text)
 554             :LaTeX-fragments
 555             (plist-get opt-plist :LaTeX-fragments))
 556            "[\r\n]"))
 557          ;; Use literal output to show check boxes.
 558          (checkbox-start
 559           (nth 1 (assoc "=" org-export-docbook-emphasis-alist)))
 560          (checkbox-end
 561           (nth 2 (assoc "=" org-export-docbook-emphasis-alist)))
 562          table-open type
 563          table-buffer table-orig-buffer
 564          ind item-type starter
 565          rpl path attr caption label desc descp desc1 desc2 link
 566          fnc item-tag item-number
 567          footref-seen footnote-list
 568          id-file
 569          )
 570
 571     ;; Fine detailed info about author name.
 572     (if (string-match "\\([^ ]+\\) \\(.+ \\)?\\([^ ]+\\)" author)
 573         (progn
 574           (setq firstname (match-string 1 author)
 575                 othername (or (match-string 2 author) "")
 576                 surname (match-string 3 author))))
 577
 578     ;; Get all footnote text.
 579     (setq footnote-list
 580           (org-export-docbook-get-footnotes lines))
 581
 582     (let ((inhibit-read-only t))
 583       (org-unmodified
 584        (remove-text-properties (point-min) (point-max)
 585                                '(:org-license-to-kill t))))
 586
 587     (setq org-min-level (org-get-min-level lines level-offset))
 588     (setq org-last-level org-min-level)
 589     (org-init-section-numbers)
 590
 591     ;; Get and save the date.
 592     (cond
 593      ((and date (string-match "%" date))
 594       (setq date (format-time-string date)))
 595      (date)
 596      (t (setq date (format-time-string "%Y-%m-%d %T %Z"))))
 597
 598     ;; Get the language-dependent settings
 599     (setq lang-words (or (assoc language org-export-language-setup)
 600                          (assoc "en" org-export-language-setup)))
 601
 602     ;; Switch to the output buffer.  Use fundamental-mode for now.  We
 603     ;; could turn on nXML mode later and do some indentation.
 604     (set-buffer buffer)
 605     (let ((inhibit-read-only t)) (erase-buffer))
 606     (fundamental-mode)
 607     (org-install-letbind)
 608
 609     (and (fboundp 'set-buffer-file-coding-system)
 610          (set-buffer-file-coding-system coding-system-for-write))
 611
 612     ;; The main body...
 613     (let ((case-fold-search nil)
 614           (org-odd-levels-only odd))
 615
 616       ;; Create local variables for all options, to make sure all called
 617       ;; functions get the correct information
 618       (mapc (lambda (x)
 619               (set (make-local-variable (nth 2 x))
 620                    (plist-get opt-plist (car x))))
 621             org-export-plist-vars)
 622
 623       ;; Insert DocBook file header, title, and author info.
 624       (unless body-only
 625         (insert org-export-docbook-header)
 626         (if org-export-docbook-doctype
 627             (insert org-export-docbook-doctype))
 628         (insert "<!-- Date: " date " -->\n")
 629         (insert (format "<!-- DocBook XML file generated by Org-mode %s Emacs %s -->\n"
 630                         org-version emacs-major-version))
 631         (insert org-export-docbook-article-header)
 632         (insert (format
 633                  "\n  <title>%s</title>
 634   <info>
 635     <author>
 636       <personname>
 637         <firstname>%s</firstname> <othername>%s</othername> <surname>%s</surname>
 638       </personname>
 639       %s
 640     </author>
 641   </info>\n"
 642                  (org-docbook-expand title)
 643                  firstname othername surname
 644                  (if (and org-export-email-info
 645                           email (string-match "\\S-" email))
 646                      (concat "<email>" email "</email>") "")
 647                  )))
 648
 649       (org-init-section-numbers)
 650
 651       (org-export-docbook-open-para)
 652
 653       ;; Loop over all the lines...
 654       (while (setq line (pop lines) origline line)
 655         (catch 'nextline
 656
 657           ;; End of quote section?
 658           (when (and inquote (string-match org-outline-regexp-bol line))
 659             (insert "]]></programlisting>\n")
 660             (org-export-docbook-open-para)
 661             (setq inquote nil))
 662           ;; Inside a quote section?
 663           (when inquote
 664             (insert (org-docbook-protect line) "\n")
 665             (throw 'nextline nil))
 666
 667           ;; Fixed-width, verbatim lines (examples)
 668           (when (and org-export-with-fixed-width
 669                      (string-match "^[ \t]*:\\(\\([ \t]\\|$\\)\\(.*\\)\\)" line))
 670             (when (not infixed)
 671               (setq infixed t)
 672               (org-export-docbook-close-para-maybe)
 673               (insert "<programlisting><![CDATA["))
 674             (insert (match-string 3 line) "\n")
 675             (when (or (not lines)
 676                       (not (string-match "^[ \t]*\\(:.*\\)"
 677                                          (car lines))))
 678               (setq infixed nil)
 679               (insert "]]></programlisting>\n")
 680               (org-export-docbook-open-para))
 681             (throw 'nextline nil))
 682
 683           ;; Protected HTML
 684           (when (get-text-property 0 'org-protected line)
 685             (let (par (ind (get-text-property 0 'original-indentation line)))
 686               (when (re-search-backward
 687                      "\\(<para>\\)\\([ \t\r\n]*\\)\\=" (- (point) 100) t)
 688                 (setq par (match-string 1))
 689                 (replace-match "\\2\n"))
 690               (insert line "\n")
 691               (while (and lines
 692                           (or (= (length (car lines)) 0)
 693                               (not ind)
 694                               (equal ind (get-text-property 0 'original-indentation (car lines))))
 695                           (or (= (length (car lines)) 0)
 696                               (get-text-property 0 'org-protected (car lines))))
 697                 (insert (pop lines) "\n"))
 698               (and par (insert "<para>\n")))
 699             (throw 'nextline nil))
 700
 701           ;; Start of block quotes and verses
 702           (when (or (equal "ORG-BLOCKQUOTE-START" line)
 703                     (and (equal "ORG-VERSE-START" line)
 704                          (setq inverse t)))
 705             (org-export-docbook-close-para-maybe)
 706             (insert "<blockquote>")
 707             ;; Check whether attribution for this blockquote exists.
 708             (let (tmp1
 709                   attribution
 710                   (end (if inverse "ORG-VERSE-END" "ORG-BLOCKQUOTE-END"))
 711                   (quote-lines nil))
 712               (while (and (setq tmp1 (pop lines))
 713                           (not (equal end tmp1)))
 714                 (push tmp1 quote-lines))
 715               (push tmp1 lines)         ; Put back quote end mark
 716               ;; Check the last line in the quote to see if it contains
 717               ;; the attribution.
 718               (setq tmp1 (pop quote-lines))
 719               (if (string-match "\\(^.*\\)\\(--[ \t]+\\)\\(.+\\)$" tmp1)
 720                   (progn
 721                     (setq attribution (match-string 3 tmp1))
 722                     (when (save-match-data
 723                             (string-match "[^ \t]" (match-string 1 tmp1)))
 724                       (push (match-string 1 tmp1) lines)))
 725                 (push tmp1 lines))
 726               (while (setq tmp1 (pop quote-lines))
 727                 (push tmp1 lines))
 728               (when attribution
 729                 (insert "<attribution>" attribution "</attribution>")))
 730             ;; Insert <literallayout> for verse.
 731             (if inverse
 732                 (insert "\n<literallayout>")
 733               (org-export-docbook-open-para))
 734             (throw 'nextline nil))
 735
 736           ;; End of block quotes
 737           (when (equal "ORG-BLOCKQUOTE-END" line)
 738             (org-export-docbook-close-para-maybe)
 739             (insert "</blockquote>\n")
 740             (org-export-docbook-open-para)
 741             (throw 'nextline nil))
 742
 743           ;; End of verses
 744           (when (equal "ORG-VERSE-END" line)
 745             (insert "</literallayout>\n</blockquote>\n")
 746             (org-export-docbook-open-para)
 747             (setq inverse nil)
 748             (throw 'nextline nil))
 749
 750           ;; Text centering.  Element <para role="centered"> does not
 751           ;; seem to work with FOP, so for now we use <informaltable> to
 752           ;; center the text, which can contain multiple paragraphs.
 753           (when (equal "ORG-CENTER-START" line)
 754             (org-export-docbook-close-para-maybe)
 755             (insert "<informaltable frame=\"none\" colsep=\"0\" rowsep=\"0\">\n"
 756                     "<tgroup align=\"center\" cols=\"1\">\n"
 757                     "<tbody><row><entry>\n")
 758             (org-export-docbook-open-para)
 759             (throw 'nextline nil))
 760
 761           (when (equal "ORG-CENTER-END" line)
 762             (org-export-docbook-close-para-maybe)
 763             (insert "</entry></row></tbody>\n"
 764                     "</tgroup>\n</informaltable>\n")
 765             (org-export-docbook-open-para)
 766             (throw 'nextline nil))
 767
 768           ;; Make targets to anchors.  Note that currently FOP does not
 769           ;; seem to support <anchor> tags when generating PDF output,
 770           ;; but this can be used in DocBook --> HTML conversion.
 771           (setq start 0)
 772           (while (string-match
 773                   "<<<?\\([^<>]*\\)>>>?\\((INVISIBLE)\\)?[ \t]*\n?" line start)
 774             (cond
 775              ((get-text-property (match-beginning 1) 'org-protected line)
 776               (setq start (match-end 1)))
 777              ((match-end 2)
 778               (setq line (replace-match
 779                           (format "@<anchor xml:id=\"%s\"/>"
 780                                   (org-solidify-link-text (match-string 1 line)))
 781                           t t line)))
 782              (t
 783               (setq line (replace-match
 784                           (format "@<anchor xml:id=\"%s\"/>"
 785                                   (org-solidify-link-text (match-string 1 line)))
 786                           t t line)))))
 787
 788           ;; Put time stamps and related keywords into special mark-up
 789           ;; elements.
 790           (setq line (org-export-docbook-handle-time-stamps line))
 791
 792           ;; Replace "&", "<" and ">" by "&amp;", "&lt;" and "&gt;".
 793           ;; Handle @<..> HTML tags (replace "@&gt;..&lt;" by "<..>").
 794           ;; Also handle sub_superscripts and check boxes.
 795           (or (string-match org-table-hline-regexp line)
 796               (setq line (org-docbook-expand line)))
 797
 798           ;; Format the links
 799           (setq start 0)
 800           (while (string-match org-bracket-link-analytic-regexp++ line start)
 801             (setq start (match-beginning 0))
 802             (setq path (save-match-data (org-link-unescape
 803                                          (match-string 3 line))))
 804             (setq type (cond
 805                         ((match-end 2) (match-string 2 line))
 806                         ((save-match-data
 807                            (or (file-name-absolute-p path)
 808                                (string-match "^\\.\\.?/" path)))
 809                          "file")
 810                         (t "internal")))
 811             (setq path (org-extract-attributes (org-link-unescape path)))
 812             (setq attr (get-text-property 0 'org-attributes path)
 813                   caption (get-text-property 0 'org-caption path)
 814                   label (get-text-property 0 'org-label path))
 815             (setq desc1 (if (match-end 5) (match-string 5 line))
 816                   desc2 (if (match-end 2) (concat type ":" path) path)
 817                   descp (and desc1 (not (equal desc1 desc2)))
 818                   desc (or desc1 desc2))
 819             ;; Make an image out of the description if that is so wanted
 820             (when (and descp (org-file-image-p
 821                               desc org-export-docbook-inline-image-extensions))
 822               (save-match-data
 823                 (if (string-match "^file:" desc)
 824                     (setq desc (substring desc (match-end 0))))))
 825             ;; FIXME: do we need to unescape here somewhere?
 826             (cond
 827              ((equal type "internal")
 828               (setq rpl (format "<link linkend=\"%s\">%s</link>"
 829                                 (org-solidify-link-text
 830                                  (save-match-data (org-link-unescape path)) nil)
 831                                 (org-export-docbook-format-desc desc))))
 832              ((and (equal type "id")
 833                    (setq id-file (org-id-find-id-file path)))
 834               ;; This is an id: link to another file (if it was the same file,
 835               ;; it would have become an internal link...)
 836               (save-match-data
 837                 (setq id-file (file-relative-name
 838                                id-file (file-name-directory org-current-export-file)))
 839                 (setq id-file (concat (file-name-sans-extension id-file)
 840                                       org-export-docbook-extension))
 841                 (setq rpl (format "<link xlink:href=\"%s#%s\">%s</link>"
 842                                   id-file path (org-export-docbook-format-desc desc)))))
 843              ((member type '("http" "https"))
 844               ;; Standard URL, just check if we need to inline an image
 845               (if (and (or (eq t org-export-docbook-inline-images)
 846                            (and org-export-docbook-inline-images (not descp)))
 847                        (org-file-image-p
 848                         path org-export-docbook-inline-image-extensions))
 849                   (setq rpl (org-export-docbook-format-image
 850                              (concat type ":" path)))
 851                 (setq link (concat type ":" path))
 852                 (setq rpl (format "<link xlink:href=\"%s\">%s</link>"
 853                                   (org-export-html-format-href link)
 854                                   (org-export-docbook-format-desc desc)))
 855                 ))
 856              ((member type '("ftp" "mailto" "news"))
 857               ;; Standard URL
 858               (setq link (concat type ":" path))
 859               (setq rpl (format "<link xlink:href=\"%s\">%s</link>"
 860                                 (org-export-html-format-href link)
 861                                 (org-export-docbook-format-desc desc))))
 862              ((string= type "coderef")
 863               (setq rpl (format (org-export-get-coderef-format path (and descp desc))
 864                                 (cdr (assoc path org-export-code-refs)))))
 865              ((functionp (setq fnc (nth 2 (assoc type org-link-protocols))))
 866               ;; The link protocol has a function for format the link
 867               (setq rpl
 868                     (save-match-data
 869                       (funcall fnc (org-link-unescape path) desc1 'html))))
 870
 871              ((string= type "file")
 872               ;; FILE link
 873               (let* ((filename path)
 874                      (abs-p (file-name-absolute-p filename))
 875                      thefile file-is-image-p search)
 876                 (save-match-data
 877                   (if (string-match "::\\(.*\\)" filename)
 878                       (setq search (match-string 1 filename)
 879                             filename (replace-match "" t nil filename)))
 880                   (setq valid
 881                         (if (functionp link-validate)
 882                             (funcall link-validate filename current-dir)
 883                           t))
 884                   (setq file-is-image-p
 885                         (org-file-image-p
 886                          filename org-export-docbook-inline-image-extensions))
 887                   (setq thefile (if abs-p (expand-file-name filename) filename))
 888                   ;; Carry over the properties (expand-file-name will
 889                   ;; discard the properties of filename)
 890                   (add-text-properties 0 (1- (length thefile))
 891                                        (list 'org-caption caption
 892                                              'org-attributes attr
 893                                              'org-label label)
 894                                        thefile)
 895                   (when (and org-export-docbook-link-org-files-as-docbook
 896                              (string-match "\\.org$" thefile))
 897                     (setq thefile (concat (substring thefile 0
 898                                                      (match-beginning 0))
 899                                           org-export-docbook-extension))
 900                     (if (and search
 901                              ;; make sure this is can be used as target search
 902                              (not (string-match "^[0-9]*$" search))
 903                              (not (string-match "^\\*" search))
 904                              (not (string-match "^/.*/$" search)))
 905                         (setq thefile (concat thefile "#"
 906                                               (org-solidify-link-text
 907                                                (org-link-unescape search)))))
 908                     (when (string-match "^file:" desc)
 909                       (setq desc (replace-match "" t t desc))
 910                       (if (string-match "\\.org$" desc)
 911                           (setq desc (replace-match "" t t desc))))))
 912                 (setq rpl (if (and file-is-image-p
 913                                    (or (eq t org-export-docbook-inline-images)
 914                                        (and org-export-docbook-inline-images
 915                                             (not descp))))
 916                               (progn
 917                                 (message "image %s %s" thefile org-docbook-para-open)
 918                                 (org-export-docbook-format-image thefile))
 919                             (format "<link xlink:href=\"%s\">%s</link>"
 920                                     thefile (org-export-docbook-format-desc desc))))
 921                 (if (not valid) (setq rpl desc))))
 922
 923              (t
 924               ;; Just publish the path, as default
 925               (setq rpl (concat "&lt;" type ":"
 926                                 (save-match-data (org-link-unescape path))
 927                                 "&gt;"))))
 928             (setq line (replace-match rpl t t line)
 929                   start (+ start (length rpl))))
 930
 931           ;; TODO items: can we do something better?!
 932           (if (and (string-match org-todo-line-regexp line)
 933                    (match-beginning 2))
 934               (setq line
 935                     (concat (substring line 0 (match-beginning 2))
 936                             "[" (match-string 2 line) "]"
 937                             (substring line (match-end 2)))))
 938
 939           ;; Does this contain a reference to a footnote?
 940           (when org-export-with-footnotes
 941             (setq start 0)
 942             (while (string-match "\\([^* \t].*?\\)\\[\\([0-9]+\\)\\]" line start)
 943               ;; Discard protected matches not clearly identified as
 944               ;; footnote markers.
 945               (if (or (get-text-property (match-beginning 2) 'org-protected line)
 946                       (not (get-text-property (match-beginning 2) 'org-footnote line)))
 947                   (setq start (match-end 2))
 948                 (let* ((num (match-string 2 line))
 949                        (footnote-def (assoc num footnote-list)))
 950                   (if (assoc num footref-seen)
 951                       (setq line (replace-match
 952                                   (format "%s<footnoteref linkend=\"%s%s\"/>"
 953                                           (match-string 1 line)
 954                                           org-export-docbook-footnote-id-prefix num)
 955                                   t t line))
 956                     (setq line (replace-match
 957                                 (concat
 958                                  (format "%s<footnote xml:id=\"%s%s\"><para>%s</para></footnote>"
 959                                          (match-string 1 line)
 960                                          org-export-docbook-footnote-id-prefix
 961                                          num
 962                                          (if footnote-def
 963                                              (save-match-data
 964                                                (org-docbook-expand (cdr footnote-def)))
 965                                            (format "FOOTNOTE DEFINITION NOT FOUND: %s" num)))
 966                                  ;; If another footnote is following the
 967                                  ;; current one, add a separator.
 968                                  (if (save-match-data
 969                                        (string-match "\\`\\[[0-9]+\\]"
 970                                                      (substring line (match-end 0))))
 971                                      org-export-docbook-footnote-separator
 972                                    ""))
 973                                 t t line))
 974                     (push (cons num 1) footref-seen))))))
 975
 976           (cond
 977            ((string-match "^\\(\\*+\\)\\(?: +\\(.*?\\)\\)?[ \t]*$" line)
 978             ;; This is a headline
 979             (setq level (org-tr-level (- (match-end 1) (match-beginning 1)
 980                                          level-offset))
 981                   txt (match-string 2 line))
 982             (if (string-match quote-re0 txt)
 983                 (setq txt (replace-match "" t t txt)))
 984             (org-export-docbook-level-start level txt)
 985             ;; QUOTES
 986             (when (string-match quote-re line)
 987               (org-export-docbook-close-para-maybe)
 988               (insert "<programlisting><![CDATA[")
 989               (setq inquote t)))
 990
 991            ;; Tables: since version 4.3 of DocBook DTD, HTML tables are
 992            ;; supported.  We can use existing HTML table exporter code
 993            ;; here.
 994            ((and org-export-with-tables
 995                  (string-match "^\\([ \t]*\\)\\(|\\|\\+-+\\+\\)" line))
 996             (if (not table-open)
 997                 ;; New table starts
 998                 (setq table-open t
 999                       table-buffer nil
1000                       table-orig-buffer nil))
1001             ;; Accumulate lines
1002             (setq table-buffer (cons line table-buffer)
1003                   table-orig-buffer (cons origline table-orig-buffer))
1004             (when (or (not lines)
1005                       (not (string-match "^\\([ \t]*\\)\\(|\\|\\+-+\\+\\)"
1006                                          (car lines))))
1007               (setq table-open nil
1008                     table-buffer (nreverse table-buffer)
1009                     table-orig-buffer (nreverse table-orig-buffer))
1010               (org-export-docbook-close-para-maybe)
1011               (insert (org-export-docbook-finalize-table
1012                        (org-format-table-html table-buffer table-orig-buffer
1013                                               'no-css)))))
1014
1015            ;; Normal lines
1016            (t
1017             ;; This line either is list item or end a list.
1018             (when (when (get-text-property 0 'list-item line)
1019                       (setq line (org-export-docbook-list-line
1020                           line
1021                           (get-text-property 0 'list-item line)
1022                           (get-text-property 0 'list-struct line)
1023                           (get-text-property 0 'list-prevs line)))))
1024
1025             ;; Empty lines start a new paragraph.  If hand-formatted lists
1026             ;; are not fully interpreted, lines starting with "-", "+", "*"
1027             ;; also start a new paragraph.
1028             (if (and (string-match "^ [-+*]-\\|^[ \t]*$" line)
1029                      (not inverse))
1030                 (org-export-docbook-open-para))
1031
1032             ;; Is this the start of a footnote?
1033             (when org-export-with-footnotes
1034               (when (and (boundp 'footnote-section-tag-regexp)
1035                          (string-match (concat "^" footnote-section-tag-regexp)
1036                                        line))
1037                 ;; ignore this line
1038                 (throw 'nextline nil))
1039               ;; These footnote lines have been read and saved before,
1040               ;; ignore them at this time.
1041               (when (string-match "^[ \t]*\\[\\([0-9]+\\)\\]" line)
1042                 (org-export-docbook-close-para-maybe)
1043                 (throw 'nextline nil)))
1044
1045             ;; FIXME: It might be a good idea to add an option to
1046             ;; support line break processing instruction <?linebreak?>.
1047             ;; Org-mode supports line break "\\" in HTML exporter, and
1048             ;; some DocBook users may also want to force line breaks
1049             ;; even though DocBook only supports that in
1050             ;; <literallayout>.
1051
1052             (insert line "\n")))))
1053
1054       ;; Properly close all local lists and other lists
1055       (when inquote
1056         (insert "]]></programlisting>\n")
1057         (org-export-docbook-open-para))
1058
1059       ;; Close all open sections.
1060       (org-export-docbook-level-start 1 nil)
1061
1062       (unless (plist-get opt-plist :buffer-will-be-killed)
1063         (normal-mode)
1064         (if (eq major-mode (default-value 'major-mode))
1065             (nxml-mode)))
1066
1067       ;; Remove empty paragraphs. Replace them with a newline.
1068       (goto-char (point-min))
1069       (while (re-search-forward
1070               "[ \r\n\t]*\\(<para>\\)[ \r\n\t]*</para>[ \r\n\t]*" nil t)
1071         (when (not (get-text-property (match-beginning 1) 'org-protected))
1072           (replace-match "\n")
1073           (backward-char 1)))
1074       ;; Fill empty sections with <para></para>.  This is to make sure
1075       ;; that the DocBook document generated is valid and well-formed.
1076       (goto-char (point-min))
1077       (while (re-search-forward
1078               "</title>\\([ \r\n\t]*\\)</section>" nil t)
1079         (when (not (get-text-property (match-beginning 0) 'org-protected))
1080           (replace-match "\n<para></para>\n" nil nil nil 1)))
1081       ;; Insert the last closing tag.
1082       (goto-char (point-max))
1083       (unless body-only
1084         (insert "</article>"))
1085       (run-hooks 'org-export-docbook-final-hook)
1086       (or to-buffer (save-buffer))
1087       (goto-char (point-min))
1088       (or (org-export-push-to-kill-ring "DocBook")
1089           (message "Exporting... done"))
1090       (if (eq to-buffer 'string)
1091           (prog1 (buffer-substring (point-min) (point-max))
1092             (kill-buffer (current-buffer)))
1093         (current-buffer)))))
1094
1095 (defun org-export-docbook-open-para ()
1096   "Insert <para>, but first close previous paragraph if any."
1097   (org-export-docbook-close-para-maybe)
1098   (insert "\n<para>")
1099   (setq org-docbook-para-open t))
1100
1101 (defun org-export-docbook-close-para-maybe ()
1102   "Close DocBook paragraph if there is one open."
1103   (when org-docbook-para-open
1104     (insert "</para>\n")
1105     (setq org-docbook-para-open nil)))
1106
1107 (defun org-export-docbook-close-li (&optional type)
1108   "Close list if necessary."
1109   (org-export-docbook-close-para-maybe)
1110   (if (equal type "d")
1111       (insert "</listitem></varlistentry>\n")
1112     (insert "</listitem>\n")))
1113
1114 (defun org-export-docbook-level-start (level title)
1115   "Insert a new level in DocBook export.
1116 When TITLE is nil, just close all open levels."
1117   (org-export-docbook-close-para-maybe)
1118   (let* ((target (and title (org-get-text-property-any 0 'target title)))
1119          (l org-level-max)
1120          section-number)
1121     (while (>= l level)
1122       (if (aref org-levels-open (1- l))
1123           (progn
1124             (insert "</section>\n")
1125             (aset org-levels-open (1- l) nil)))
1126       (setq l (1- l)))
1127     (when title
1128       ;; If title is nil, this means this function is called to close
1129       ;; all levels, so the rest is done only if title is given.
1130       ;;
1131       ;; Format tags: put them into a superscript like format.
1132       (when (string-match (org-re "\\(:[[:alnum:]_@#%:]+:\\)[ \t]*$") title)
1133         (setq title
1134               (replace-match
1135                (if org-export-with-tags
1136                    (save-match-data
1137                      (concat
1138                       "<superscript>"
1139                       (match-string 1 title)
1140                       "</superscript>"))
1141                  "")
1142                t t title)))
1143       (aset org-levels-open (1- level) t)
1144       (setq section-number (org-section-number level))
1145       (insert (format "\n<section xml:id=\"%s%s\">\n<title>%s</title>"
1146                       org-export-docbook-section-id-prefix
1147                       (replace-regexp-in-string "\\." "_" section-number)
1148                       title))
1149       (org-export-docbook-open-para))))
1150
1151 (defun org-docbook-expand (string)
1152   "Prepare STRING for DocBook export.
1153 Applies all active conversions.  If there are links in the
1154 string, don't modify these."
1155   (let* ((re (concat org-bracket-link-regexp "\\|"
1156                      (org-re "[ \t]+\\(:[[:alnum:]_@#%:]+:\\)[ \t]*$")))
1157          m s l res)
1158     (while (setq m (string-match re string))
1159       (setq s (substring string 0 m)
1160             l (match-string 0 string)
1161             string (substring string (match-end 0)))
1162       (push (org-docbook-do-expand s) res)
1163       (push l res))
1164     (push (org-docbook-do-expand string) res)
1165     (apply 'concat (nreverse res))))
1166
1167 (defun org-docbook-do-expand (s)
1168   "Apply all active conversions to translate special ASCII to DocBook."
1169   (setq s (org-html-protect s))
1170   (while (string-match "@&lt;\\([^&]*\\)&gt;" s)
1171     (setq s (replace-match "<\\1>" t nil s)))
1172   (if org-export-with-emphasize
1173       (setq s (org-export-docbook-convert-emphasize s)))
1174   (if org-export-with-special-strings
1175       (setq s (org-export-docbook-convert-special-strings s)))
1176   (if org-export-with-sub-superscripts
1177       (setq s (org-export-docbook-convert-sub-super s)))
1178   (if org-export-with-TeX-macros
1179       (let ((start 0) wd rep)
1180         (while (setq start (string-match "\\\\\\([a-zA-Z]+\\)\\({}\\)?"
1181                                          s start))
1182           (if (get-text-property (match-beginning 0) 'org-protected s)
1183               (setq start (match-end 0))
1184             (setq wd (match-string 1 s))
1185             (if (setq rep (org-entity-get-representation wd 'html))
1186                 (setq s (replace-match rep t t s))
1187               (setq start (+ start (length wd))))))))
1188   s)
1189
1190 (defun org-export-docbook-format-desc (desc)
1191   "Make sure DESC is valid as a description in a link."
1192   (save-match-data
1193     (org-docbook-do-expand desc)))
1194
1195 (defun org-export-docbook-convert-emphasize (string)
1196   "Apply emphasis for DocBook exporting."
1197   (let ((s 0) rpl)
1198     (while (string-match org-emph-re string s)
1199       (if (not (equal
1200                 (substring string (match-beginning 3) (1+ (match-beginning 3)))
1201                 (substring string (match-beginning 4) (1+ (match-beginning 4)))))
1202           (setq s (match-beginning 0)
1203                 rpl
1204                 (concat
1205                  (match-string 1 string)
1206                  (nth 1 (assoc (match-string 3 string)
1207                                org-export-docbook-emphasis-alist))
1208                  (match-string 4 string)
1209                  (nth 2 (assoc (match-string 3 string)
1210                                org-export-docbook-emphasis-alist))
1211                  (match-string 5 string))
1212                 string (replace-match rpl t t string)
1213                 s (+ s (- (length rpl) 2)))
1214         (setq s (1+ s))))
1215     string))
1216
1217 (defun org-docbook-protect (string)
1218   (org-html-protect string))
1219
1220 ;; For now, simply return string as it is.
1221 (defun org-export-docbook-convert-special-strings (string)
1222   "Convert special characters in STRING to DocBook."
1223   string)
1224
1225 (defun org-export-docbook-get-footnotes (lines)
1226   "Given a list of LINES, return a list of alist footnotes."
1227   (let ((list nil) line)
1228     (while (setq line (pop lines))
1229       (if (string-match "^[ \t]*\\[\\([0-9]+\\)\\] \\(.+\\)" line)
1230           (push (cons (match-string 1 line) (match-string 2 line))
1231                 list)))
1232     list))
1233
1234 (defun org-export-docbook-format-image (src)
1235   "Create image element in DocBook."
1236   (save-match-data
1237     (let* ((caption (org-find-text-property-in-string 'org-caption src))
1238            (attr (or (org-find-text-property-in-string 'org-attributes src)
1239                      ""))
1240            (label (org-find-text-property-in-string 'org-label src))
1241            (default-attr org-export-docbook-default-image-attributes)
1242            tmp)
1243       (setq caption (and caption (org-html-do-expand caption)))
1244       (while (setq tmp (pop default-attr))
1245         (if (not (string-match (concat (car tmp) "=") attr))
1246             (setq attr (concat attr " " (car tmp) "=" (cdr tmp)))))
1247       (format "<mediaobject%s>
1248 <imageobject>\n<imagedata fileref=\"%s\" %s/>\n</imageobject>
1249 %s</mediaobject>"
1250               (if label (concat " xml:id=\"" label "\"") "")
1251               src attr
1252               (if caption
1253                   (concat "<caption>\n<para>"
1254                           caption
1255                           "</para>\n</caption>\n")
1256                 "")
1257               ))))
1258
1259 (defun org-export-docbook-preprocess (parameters)
1260   "Extra preprocessing work for DocBook export."
1261   ;; Merge lines starting with "\par" to one line.  Such lines are
1262   ;; regarded as the continuation of a long footnote.
1263   (goto-char (point-min))
1264   (while (re-search-forward "\n\\(\\\\par\\>\\)" nil t)
1265     (if (not (get-text-property (match-beginning 1) 'org-protected))
1266         (replace-match ""))))
1267
1268 (defun org-export-docbook-finalize-table (table)
1269   "Clean up TABLE and turn it into DocBook format.
1270 This function adds a label to the table if it is available, and
1271 also changes TABLE to informaltable if caption does not exist.
1272 TABLE is a string containing the HTML code generated by
1273 `org-format-table-html' for a table in Org-mode buffer."
1274   (let (table-with-label)
1275     ;; Get the label if it exists, and move it into the <table> element.
1276     (setq table-with-label
1277           (if (string-match
1278                "^<table \\(\\(.\\|\n\\)+\\)<a name=\"\\(.+\\)\" id=\".+\"></a>\n\\(\\(.\\|\n\\)+\\)</table>"
1279                table)
1280               (replace-match (concat "<table xml:id=\"" (match-string 3 table) "\" "
1281                                      (match-string 1 table)
1282                                      (match-string 4 table)
1283                                      "</table>")
1284                              nil t table)
1285             table))
1286     ;; Change <table> into <informaltable> if caption does not exist.
1287     (if (string-match
1288          "^<table \\(\\(.\\|\n\\)+\\)<caption></caption>\n\\(\\(.\\|\n\\)+\\)</table>"
1289          table-with-label)
1290         (replace-match (concat "<informaltable "
1291                                (match-string 1 table-with-label)
1292                                (match-string 3 table-with-label)
1293                                "</informaltable>")
1294                        nil t table-with-label)
1295       table-with-label)))
1296
1297 ;; Note: This function is very similar to
1298 ;; org-export-html-convert-sub-super.  They can be merged in the future.
1299 (defun org-export-docbook-convert-sub-super (string)
1300   "Convert sub- and superscripts in STRING for DocBook."
1301   (let (key c (s 0) (requireb (eq org-export-with-sub-superscripts '{})))
1302     (while (string-match org-match-substring-regexp string s)
1303       (cond
1304        ((and requireb (match-end 8)) (setq s (match-end 2)))
1305        ((get-text-property  (match-beginning 2) 'org-protected string)
1306         (setq s (match-end 2)))
1307        (t
1308         (setq s (match-end 1)
1309               key (if (string= (match-string 2 string) "_")
1310                       "subscript"
1311                     "superscript")
1312               c (or (match-string 8 string)
1313                     (match-string 6 string)
1314                     (match-string 5 string))
1315               string (replace-match
1316                       (concat (match-string 1 string)
1317                               "<" key ">" c "</" key ">")
1318                       t t string)))))
1319     (while (string-match "\\\\\\([_^]\\)" string)
1320       (setq string (replace-match (match-string 1 string) t t string)))
1321     string))
1322
1323 (defun org-export-docbook-protect-tags (string)
1324   "Change ``<...>'' in string STRING into ``@<...>''.
1325 This is normally needed when STRING contains DocBook elements
1326 that need to be preserved in later phase of DocBook exporting."
1327   (let ((start 0))
1328     (while (string-match "<\\([^>]*\\)>" string start)
1329       (setq string (replace-match
1330                     "@<\\1>" t nil string)
1331             start (match-end 0)))
1332     string))
1333
1334 (defun org-export-docbook-handle-time-stamps (line)
1335   "Format time stamps in string LINE."
1336   (let (replaced
1337         (kw-markup (org-export-docbook-protect-tags
1338                     org-export-docbook-keywords-markup))
1339         (ts-markup (org-export-docbook-protect-tags
1340                     org-export-docbook-timestamp-markup)))
1341     (while (string-match org-maybe-keyword-time-regexp line)
1342       (setq replaced
1343             (concat replaced
1344                     (substring line 0 (match-beginning 0))
1345                     (if (match-end 1)
1346                         (format kw-markup
1347                                 (match-string 1 line)))
1348                     " "
1349                     (format ts-markup
1350                             (substring (org-translate-time
1351                                         (match-string 3 line)) 1 -1)))
1352             line (substring line (match-end 0))))
1353     (concat replaced line)))
1354
1355 (defun org-export-docbook-list-line (line pos struct prevs)
1356   "Insert list syntax in export buffer. Return LINE, maybe modified.
1357
1358 POS is the item position or line position the line had before
1359 modifications to buffer. STRUCT is the list structure. PREVS is
1360 the alist of previous items."
1361   (let* ((get-type
1362           (function
1363            ;; Translate type of list containing POS to "ordered",
1364            ;; "variable" or "itemized".
1365            (lambda (pos struct prevs)
1366              (let ((type (org-list-get-list-type pos struct prevs)))
1367                (cond
1368                 ((eq 'ordered type) "ordered")
1369                 ((eq 'descriptive type) "variable")
1370                 (t "itemized"))))))
1371          (get-closings
1372           (function
1373            ;; Return list of all items and sublists ending at POS, in
1374            ;; reverse order.
1375            (lambda (pos)
1376              (let (out)
1377                (catch 'exit
1378                  (mapc (lambda (e)
1379                          (let ((end (nth 6 e))
1380                                (item (car e)))
1381                            (cond
1382                             ((= end pos) (push item out))
1383                             ((>= item pos) (throw 'exit nil)))))
1384                        struct))
1385                out)))))
1386     ;; First close any previous item, or list, ending at POS.
1387     (mapc (lambda (e)
1388             (let* ((lastp (= (org-list-get-last-item e struct prevs) e))
1389                    (first-item (org-list-get-list-begin e struct prevs))
1390                    (type (funcall get-type first-item struct prevs)))
1391               ;; Ending for every item
1392               (org-export-docbook-close-para-maybe)
1393               (insert (if (equal type "variable")
1394                           "</listitem></varlistentry>\n"
1395                         "</listitem>\n"))
1396               ;; We're ending last item of the list: end list.
1397               (when lastp
1398                 (insert (format "</%slist>\n" type))
1399                 (org-export-docbook-open-para))))
1400           (funcall get-closings pos))
1401     (cond
1402      ;; At an item: insert appropriate tags in export buffer.
1403      ((assq pos struct)
1404       (string-match (concat "[ \t]*\\(\\S-+[ \t]*\\)"
1405                             "\\(?:\\[@\\(?:start:\\)?\\([0-9]+\\|[a-zA-Z]\\)\\][ \t]*\\)?"
1406                             "\\(?:\\(\\[[ X-]\\]\\)[ \t]+\\)?"
1407                             "\\(?:\\(.*\\)[ \t]+::\\(?:[ \t]+\\|$\\)\\)?"
1408                             "\\(.*\\)")
1409                     line)
1410       (let* ((checkbox (match-string 3 line))
1411              (desc-tag (or (match-string 4 line) "???"))
1412              (body (match-string 5 line))
1413              (list-beg (org-list-get-list-begin pos struct prevs))
1414              (firstp (= list-beg pos))
1415              ;; Always refer to first item to determine list type, in
1416              ;; case list is ill-formed.
1417              (type (funcall get-type list-beg struct prevs))
1418              ;; Special variables for ordered lists.
1419              (counter (let ((count-tmp (org-list-get-counter pos struct)))
1420                         (cond
1421                          ((not count-tmp) nil)
1422                          ((string-match "[A-Za-z]" count-tmp)
1423                           (- (string-to-char (upcase count-tmp)) 64))
1424                          ((string-match "[0-9]+" count-tmp)
1425                           count-tmp)))))
1426         ;; When FIRSTP, a new list or sub-list is starting.
1427         (when firstp
1428           (org-export-docbook-close-para-maybe)
1429           (insert (format "<%slist>\n" type)))
1430         (insert (cond
1431                  ((equal type "variable")
1432                   (format "<varlistentry><term>%s</term><listitem>" desc-tag))
1433                  ((and (equal type "ordered") counter)
1434                   (format "<listitem override=\"%s\">" counter))
1435                  (t "<listitem>")))
1436         ;; For DocBook, we need to open a para right after tag
1437         ;; <listitem>.
1438         (org-export-docbook-open-para)
1439         ;; If line had a checkbox, some additional modification is required.
1440         (when checkbox (setq body (concat checkbox " " body)))
1441         ;; Return modified line
1442         body))
1443      ;; At a list ender:  normal text follows: need <para>.
1444      ((equal "ORG-LIST-END-MARKER" line)
1445       (org-export-docbook-open-para)
1446       (throw 'nextline nil))
1447      ;; Not at an item: return line unchanged (side-effects only).
1448      (t line))))
1449
1450 (provide 'org-docbook)
1451
1452 ;;; org-docbook.el ends here