| blob | f5a2bc269f67dfd17e0f5a2da54efe8045a11e45 |
1 ;;; ox.el --- Generic Export Engine for Org Mode
3 ;; Copyright (C) 2012, 2013 Free Software Foundation, Inc.
5 ;; Author: Nicolas Goaziou <n.goaziou at gmail dot com>
6 ;; Keywords: outlines, hypermedia, calendar, wp
8 ;; GNU Emacs is free software: you can redistribute it and/or modify
9 ;; it under the terms of the GNU General Public License as published by
10 ;; the Free Software Foundation, either version 3 of the License, or
11 ;; (at your option) any later version.
13 ;; GNU Emacs is distributed in the hope that it will be useful,
14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 ;; GNU General Public License for more details.
18 ;; You should have received a copy of the GNU General Public License
19 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
21 ;;; Commentary:
22 ;;
23 ;; This library implements a generic export engine for Org, built on
24 ;; its syntactical parser: Org Elements.
25 ;;
26 ;; Besides that parser, the generic exporter is made of three distinct
27 ;; parts:
28 ;;
29 ;; - The communication channel consists in a property list, which is
30 ;; created and updated during the process. Its use is to offer
31 ;; every piece of information, would it be about initial environment
32 ;; or contextual data, all in a single place. The exhaustive list
33 ;; of properties is given in "The Communication Channel" section of
34 ;; this file.
35 ;;
36 ;; - The transcoder walks the parse tree, ignores or treat as plain
37 ;; text elements and objects according to export options, and
38 ;; eventually calls back-end specific functions to do the real
39 ;; transcoding, concatenating their return value along the way.
40 ;;
41 ;; - The filter system is activated at the very beginning and the very
42 ;; end of the export process, and each time an element or an object
43 ;; has been converted. It is the entry point to fine-tune standard
44 ;; output from back-end transcoders. See "The Filter System"
45 ;; section for more information.
46 ;;
47 ;; The core function is `org-export-as'. It returns the transcoded
48 ;; buffer as a string.
49 ;;
50 ;; An export back-end is defined with `org-export-define-backend',
51 ;; which defines one mandatory information: his translation table.
52 ;; Its value is an alist whose keys are elements and objects types and
53 ;; values translator functions. See function's docstring for more
54 ;; information about translators.
55 ;;
56 ;; Optionally, `org-export-define-backend' can also support specific
57 ;; buffer keywords, OPTION keyword's items and filters. Also refer to
58 ;; function documentation for more information.
59 ;;
60 ;; If the new back-end shares most properties with another one,
61 ;; `org-export-define-derived-backend' can be used to simplify the
62 ;; process.
63 ;;
64 ;; Any back-end can define its own variables. Among them, those
65 ;; customizable should belong to the `org-export-BACKEND' group.
66 ;;
67 ;; Tools for common tasks across back-ends are implemented in the
68 ;; following part of then file.
69 ;;
70 ;; Then, a wrapper macro for asynchronous export,
71 ;; `org-export-async-start', along with tools to display results. are
72 ;; given in the penultimate part.
73 ;;
74 ;; Eventually, a dispatcher (`org-export-dispatch') for standard
75 ;; back-ends is provided in the last one.
77 ;;; Code:
96 \f
97 ;;; Internal Variables
98 ;;
99 ;; Among internal variables, the most important is
100 ;; `org-export-options-alist'. This variable define the global export
101 ;; options, shared between every exporter, and how they are acquired.
146 "Alist between export properties and ways to set them.
148 The CAR of the alist is the property name, and the CDR is a list
149 like (KEYWORD OPTION DEFAULT BEHAVIOUR) where:
151 KEYWORD is a string representing a buffer keyword, or nil. Each
152 property defined this way can also be set, during subtree
153 export, through a headline property named after the keyword
155 property).
156 OPTION is a string that could be found in an #+OPTIONS: line.
157 DEFAULT is the default value for the property.
158 BEHAVIOUR determines how Org should handle multiple keywords for
159 the same property. It is a symbol among:
160 nil Keep old value and discard the new one.
161 t Replace old value with the new one.
162 `space' Concatenate the values, separating them with a space.
163 `newline' Concatenate the values, separating them with
164 a newline.
165 `split' Split values at white spaces, and cons them to the
166 previous list.
168 Values set through KEYWORD and OPTION have precedence over
169 DEFAULT.
171 All these properties should be back-end agnostic. Back-end
172 specific properties are set through `org-export-define-backend'.
176 "List of in-buffer keywords that require special treatment.
177 These keywords are not directly associated to a property. The
178 way they are handled must be hard-coded into
239 "Alist between filters properties and initial values.
241 The key of each association is a property name accessible through
242 the communication channel. Its value is a configurable global
243 variable defining initial filters.
245 This list is meant to install user specified filters. Back-end
246 developers may install their own filters using
247 `org-export-define-backend'. Filters defined there will always
248 be prepended to the current list, so they always get applied
257 "Default rule for link matching an inline image.
258 This rule applies to links with no description. By default, it
259 will be considered as an inline image if it targets a local file
262 See `org-export-inline-image-p' for more information about
266 "Non-nil means asynchronous export process should leave data behind.
270 located in `temporary-file-directory'.
272 When non-nil, it will also set `debug-on-error' to a non-nil
276 "Record asynchronously generated export results and processes.
277 This is an alist: its CAR is the source of the
278 result (destination file or buffer for a finished process,
279 original buffer for a running one) and its CDR is a list
280 containing the back-end used, as a symbol, and either a process
281 or the time at which it finished. It is used to build the menu
285 "List of backends currently available in the exporter.
287 A backend is stored as a list where CAR is its name, as a symbol,
288 and CDR is a plist with the following properties:
289 `:filters-alist', `:menu-entry', `:options-alist' and
290 `:translate-alist'.
292 This variable is set with `org-export-define-backend' and
296 "Last command called from the dispatcher.
297 The value should be a list. Its CAR is the action, as a symbol,
301 \f
302 ;;; User-configurable Variables
303 ;;
304 ;; Configuration for the masses.
305 ;;
306 ;; They should never be accessed directly, as their value is to be
307 ;; stored in a property list (cf. `org-export-options-alist').
308 ;; Back-ends will read their value from there instead.
311 "Options for exporting Org mode files."
316 "General options for export engine."
321 "Whether sub-trees with the ARCHIVE tag should be exported.
323 This can have three different values:
324 nil Do not export, pretend this tree is not present.
325 t Do export the entire tree.
326 `headline' Only export the headline, but skip the tree below it.
328 This option can also be set with the #+OPTIONS line,
337 "Non-nil means insert author name into the exported file.
338 This option can also be set with the #+OPTIONS line,
344 "Non-nil means export CLOCK keywords.
345 This option can also be set with the #+OPTIONS line,
351 "Non-nil means the postamble should contain a creator sentence.
353 The sentence can be set in `org-export-creator-string' and
356 If the value is `comment' insert it as a comment."
364 "Non-nil means insert date in the exported document.
365 This options can also be set with the OPTIONS keyword,
371 emacs-version)
372 "String to insert at the end of the generated document."
377 "Non-nil means export contents of standard drawers.
379 When t, all drawers are exported. This may also be a list of
380 drawer names to export. If that list starts with `not', only
381 drawers with such names will be ignored.
383 This variable doesn't apply to properties drawers.
385 This option can also be set with the #+OPTIONS line,
396 :inline t
400 "Non-nil means insert author email into the exported file.
401 This option can also be set with the #+OPTIONS line,
407 "Non-nil means interpret *word*, /word/, _word_ and +word+.
409 If the export target supports emphasizing text, the word will be
410 typeset in bold, italic, with an underline or strike-through,
411 respectively.
418 "Tags that exclude a tree from export.
420 All trees carrying any of these tags will be excluded from
421 export. This is without condition, so even subtrees inside that
422 carry one of the `org-export-select-tags' will be removed.
424 This option can also be set with the #+EXCLUDE_TAGS: keyword."
431 This can be used to have pre-formatted text, fragments of code
432 etc. For example:
433 : ;; Some Lisp examples
434 : (while (defc cnt)
435 : (ding))
436 will be looking just like this in also HTML. See also the QUOTE
437 keyword. Not all export backends support this.
444 "Non-nil means Org footnotes should be exported.
445 This option can also be set with the #+OPTIONS line,
451 "Non-nil means process LaTeX environments and fragments.
453 This option can also be set with the +OPTIONS line,
456 nil Ignore math snippets.
457 `verbatim' Keep everything in verbatim.
458 t Allow export of math snippets."
466 "The last level which is still exported as a headline.
468 Inferior levels will produce itemize or enumerate lists when
469 exported.
476 "The default language for export and clocktable translations, as a string.
477 This may have an association in
478 `org-clock-clocktable-language-setup'."
483 "Non-nil means preserve all line breaks when exporting.
484 This option can also be set with the #+OPTIONS line,
490 "Non-nil means interpret entities when exporting.
493 Å.
495 For a list of supported names, see the constant `org-entities'
496 and the user option `org-entities-user'.
498 This option can also be set with the #+OPTIONS line,
504 "Non-nil means inlinetasks should be exported.
505 This option can also be set with the #+OPTIONS line,
511 "Non-nil means include planning info in export.
512 This option can also be set with the #+OPTIONS: line,
518 "Non-nil means include priority cookies in export.
519 This option can also be set with the #+OPTIONS line,
525 "Non-nil means add section numbers to headlines when exporting.
527 When set to an integer n, numbering will only happen for
528 headlines whose relative level is higher or equal to n.
530 This option can also be set with the #+OPTIONS line,
536 "Tags that select a tree for export.
538 If any such tag is found in a buffer, all trees that do not carry
539 one of these tags will be ignored during export. Inside trees
540 that are selected like this, you can still deselect a subtree by
541 tagging it with one of the `org-export-exclude-tags'.
543 This option can also be set with the #+SELECT_TAGS: keyword."
548 "Non-nil means activate smart quotes during export.
549 This option can also be set with the #+OPTIONS: line,
557 When this option is turned on, these strings will be exported as:
559 Org HTML LaTeX UTF-8
560 -----+----------+--------+-------
562 -- – -- –
563 --- — --- —
566 This option can also be set with the #+OPTIONS line,
572 "Non-nil means include statistics cookies in export.
573 This option can also be set with the #+OPTIONS: line,
581 When this option is turned on, you can use TeX-like syntax for
583 will be considered as a single item - so grouping with {} is
584 normally not needed. For example, the following things will be
585 parsed as single sub- or superscripts.
587 10^24 or 10^tau several digits will be considered 1 item.
588 10^-12 or 10^-tau a leading sign with digits or a word
589 x^2-y^3 will be read as x^2 - y^3, because items are
590 terminated by almost any nonword/nondigit char.
591 x_{i^2} or x^(2-i) braces or parenthesis do grouping.
593 Still, ambiguity is possible - so when in doubt use {} to enclose
594 the sub/superscript. If you set this variable to the symbol
595 `{}', the braces are *required* in order to trigger
596 interpretations as sub/superscript. This can be helpful in
599 This option can also be set with the #+OPTIONS line,
608 "Non-nil means create a table of contents in exported files.
610 The TOC contains headlines with levels up
611 to`org-export-headline-levels'. When an integer, include levels
612 up to N in the toc, this may then be different from
613 `org-export-headline-levels', but it will not be allowed to be
614 larger than the number of headline levels. When nil, no table of
615 contents is made.
617 This option can also be set with the #+OPTIONS line,
627 For example:
629 | Name | Address | Birthday |
630 |-------------+----------+-----------|
631 | Arthur Dent | England | 29.2.2100 |
638 "If nil, do not export tags, just remove them from headlines.
640 If this is the symbol `not-in-toc', tags will be removed from
641 table of contents entries, but still be shown in the headlines of
642 the document.
644 This option can also be set with the #+OPTIONS line,
653 "Non-nil means include TODO items for export.
655 This may have the following values:
656 t include tasks independent of state.
657 `todo' include only tasks that are not yet done.
658 `done' include only tasks that are already done.
659 nil ignore all tasks.
660 list of keywords include tasks with these keywords.
662 This option can also be set with the #+OPTIONS line,
674 "Non-nil means insert a time stamp into the exported file.
675 The time stamp shows when the file was created.
677 This option can also be set with the #+OPTIONS line,
683 "Non nil means allow timestamps in export.
685 It can be set to `active', `inactive', t or nil, in order to
686 export, respectively, only active timestamps, only inactive ones,
687 all of them or none.
689 This option can also be set with the #+OPTIONS line, e.g.
699 "Non-nil means include TODO keywords in export.
700 When nil, remove all these keywords from the export."
705 "Non-nil means BIND keywords can define local variable values.
706 This is a potential security risk, which is why the default value
707 is nil. You can also allow them through local buffer variables."
712 "Alist between export snippets back-ends and exporter back-ends.
714 This variable allows to provide shortcuts for export snippets.
718 HTML code while every other back-end will ignore it."
725 "Coding system for the exported file."
730 "Non-nil means exported stuff will also be pushed onto the kill ring."
735 "The initial scope when exporting with `org-export-dispatch'.
736 This variable can be either set to `buffer' or `subtree'."
743 "Non-nil means show buffer after exporting to temp buffer.
744 When Org exports to a file, the buffer visiting that file is ever
745 shown, but remains buried. However, when exporting to
746 a temporary buffer, that buffer is popped up in a second window.
747 When this variable is nil, the buffer remains buried also in
748 these cases."
753 "Non-nil means export and publishing commands will run in background.
754 Results from an asynchronous export are never displayed
760 "File used to initialize external export process.
761 Value must be an absolute file name. It defaults to user's
762 initialization file. Though, a specific configuration makes the
763 process faster and the export more portable."
768 "List of back-ends that shouldn't appear in the dispatcher.
770 Any back-end belonging to this list or derived from a back-end
771 belonging to it will not appear in the dispatcher menu.
773 Indeed, Org may require some export back-ends without notice. If
774 these modules are never to be used interactively, adding them
775 here will avoid cluttering the dispatcher menu."
780 "Non-nil means using a non-intrusive `org-export-dispatch'.
781 In that case, no help buffer is displayed. Though, an indicator
787 asynchronous). Also, \[?] allows to switch back to standard
788 mode."
793 \f
794 ;;; Defining Back-ends
795 ;;
796 ;; `org-export-define-backend' is the standard way to define an export
797 ;; back-end. It allows to specify translators, filters, buffer
798 ;; options and a menu entry. If the new back-end shares translators
799 ;; with another back-end, `org-export-define-derived-backend' may be
800 ;; used instead.
801 ;;
802 ;; Internally, a back-end is stored as a list, of which CAR is the
803 ;; name of the back-end, as a symbol, and CDR a plist. Accessors to
804 ;; properties of a given back-end are: `org-export-backend-filters',
805 ;; `org-export-backend-menu', `org-export-backend-options' and
806 ;; `org-export-backend-translate-table'.
807 ;;
808 ;; Eventually `org-export-barf-if-invalid-backend' returns an error
809 ;; when a given back-end hasn't been registered yet.
812 "Define a new back-end BACKEND.
814 TRANSLATORS is an alist between object or element types and
815 functions handling them.
817 These functions should return a string without any trailing
818 space, or nil. They must accept three arguments: the object or
819 element itself, its contents or nil when it isn't recursive and
820 the property list used as a communication channel.
822 Contents, when not nil, are stripped from any global indentation
823 \(although the relative one is preserved). They also always end
824 with a single newline character.
826 If, for a given type, no function is found, that element or
827 object type will simply be ignored, along with any blank line or
828 white space at its end. The same will happen if the function
829 returns the nil value. If that function returns the empty
830 string, the type will be ignored, but the blank lines or white
831 spaces will be kept.
833 In addition to element and object types, one function can be
834 associated to the `template' (or `inner-template') symbol and
835 another one to the `plain-text' symbol.
837 The former returns the final transcoded string, and can be used
838 to add a preamble and a postamble to document's body. It must
839 accept two arguments: the transcoded string and the property list
840 containing export options. A function associated to `template'
842 A function associated to `inner-template' is always applied.
844 The latter, when defined, is to be called on every text not
845 recognized as an element or an object. It must accept two
846 arguments: the text string and the information channel. It is an
847 appropriate place to protect special chars relative to the
848 back-end.
850 BODY can start with pre-defined keyword arguments. The following
851 keywords are understood:
853 :export-block
855 String, or list of strings, representing block names that
856 will not be parsed. This is used to specify blocks that will
857 contain raw code specific to the back-end. These blocks
858 still have to be handled by the relative `export-block' type
859 translator.
861 :filters-alist
863 Alist between filters and function, or list of functions,
864 specific to the back-end. See `org-export-filters-alist' for
865 a list of all allowed filters. Filters defined here
866 shouldn't make a back-end test, as it may prevent back-ends
867 derived from this one to behave properly.
869 :menu-entry
871 Menu entry for the export dispatcher. It should be a list
872 like:
874 \(KEY DESCRIPTION-OR-ORDINAL ACTION-OR-MENU)
876 where :
878 KEY is a free character selecting the back-end.
880 DESCRIPTION-OR-ORDINAL is either a string or a number.
882 If it is a string, is will be used to name the back-end in
883 its menu entry. If it is a number, the following menu will
884 be displayed as a sub-menu of the back-end with the same
885 KEY. Also, the number will be used to determine in which
886 order such sub-menus will appear (lowest first).
888 ACTION-OR-MENU is either a function or an alist.
890 If it is an action, it will be called with four
891 arguments (booleans): ASYNC, SUBTREEP, VISIBLE-ONLY and
892 BODY-ONLY. See `org-export-as' for further explanations on
893 some of them.
895 If it is an alist, associations should follow the
896 pattern:
898 \(KEY DESCRIPTION ACTION)
900 where KEY, DESCRIPTION and ACTION are described above.
902 Valid values include:
906 or
911 \(lambda (a s v b)
912 \(if a (org-latex-export-to-pdf t s v b)
913 \(org-open-file
914 \(org-latex-export-to-pdf nil s v b)))))))
916 or the following, which will be added to the previous
917 sub-menu,
919 \(?l 1
923 :options-alist
925 Alist between back-end specific properties introduced in
926 communication channel and how their value are acquired. See
927 `org-export-options-alist' for more information about
928 structure of the values."
947 ;; Register back-end.
951 ;; Tell parser to not parse EXPORT-BLOCK blocks.
958 ;; Splice in the body, if any.
962 "Create a new back-end as a variant of an existing one.
964 CHILD is the name of the derived back-end. PARENT is the name of
965 the parent back-end.
967 BODY can start with pre-defined keyword arguments. The following
968 keywords are understood:
970 :export-block
972 String, or list of strings, representing block names that
973 will not be parsed. This is used to specify blocks that will
974 contain raw code specific to the back-end. These blocks
975 still have to be handled by the relative `export-block' type
976 translator.
978 :filters-alist
980 Alist of filters that will overwrite or complete filters
981 defined in PARENT back-end. See `org-export-filters-alist'
982 for a list of allowed filters.
984 :menu-entry
986 Menu entry for the export dispatcher. See
987 `org-export-define-backend' for more information about the
988 expected value.
990 :options-alist
992 Alist of back-end specific properties that will overwrite or
993 complete those defined in PARENT back-end. Refer to
994 `org-export-options-alist' for more information about
995 structure of the values.
997 :translate-alist
999 Alist of element and object types and transcoders that will
1000 overwrite or complete transcode table from PARENT back-end.
1001 Refer to `org-export-define-backend' for detailed information
1002 about transcoders.
1005 as a variant of `latex' back-end with a custom template function:
1007 \(org-export-define-derived-backend my-latex latex
1008 :translate-alist ((template . my-latex-template-fun)))
1010 The back-end could then be called with, for example:
1038 ;; Register back-end.
1042 ;; Tell parser to not parse EXPORT-BLOCK blocks.
1049 ;; Splice in the body, if any.
1053 "Return back-end from which BACKEND is derived, or nil."
1057 "Return filters for BACKEND."
1062 "Return menu entry for BACKEND."
1067 "Return export options for BACKEND."
1072 "Return translate table for BACKEND."
1077 "Signal an error if BACKEND isn't defined."
1082 "Non-nil if BACKEND is derived from one of BACKENDS."
1086 parent))
1089 \f
1090 ;;; The Communication Channel
1091 ;;
1092 ;; During export process, every function has access to a number of
1093 ;; properties. They are of two types:
1094 ;;
1095 ;; 1. Environment options are collected once at the very beginning of
1096 ;; the process, out of the original buffer and configuration.
1097 ;; Collecting them is handled by `org-export-get-environment'
1098 ;; function.
1099 ;;
1100 ;; Most environment options are defined through the
1101 ;; `org-export-options-alist' variable.
1102 ;;
1103 ;; 2. Tree properties are extracted directly from the parsed tree,
1104 ;; just before export, by `org-export-collect-tree-properties'.
1105 ;;
1106 ;; Here is the full list of properties available during transcode
1107 ;; process, with their category and their value type.
1108 ;;
1109 ;; + `:author' :: Author's name.
1110 ;; - category :: option
1111 ;; - type :: string
1112 ;;
1113 ;; + `:back-end' :: Current back-end used for transcoding.
1114 ;; - category :: tree
1115 ;; - type :: symbol
1116 ;;
1117 ;; + `:creator' :: String to write as creation information.
1118 ;; - category :: option
1119 ;; - type :: string
1120 ;;
1121 ;; + `:date' :: String to use as date.
1122 ;; - category :: option
1123 ;; - type :: string
1124 ;;
1125 ;; + `:description' :: Description text for the current data.
1126 ;; - category :: option
1127 ;; - type :: string
1128 ;;
1129 ;; + `:email' :: Author's email.
1130 ;; - category :: option
1131 ;; - type :: string
1132 ;;
1133 ;; + `:exclude-tags' :: Tags for exclusion of subtrees from export
1134 ;; process.
1135 ;; - category :: option
1136 ;; - type :: list of strings
1137 ;;
1138 ;; + `:exported-data' :: Hash table used for memoizing
1139 ;; `org-export-data'.
1140 ;; - category :: tree
1141 ;; - type :: hash table
1142 ;;
1143 ;; + `:filetags' :: List of global tags for buffer. Used by
1144 ;; `org-export-get-tags' to get tags with inheritance.
1145 ;; - category :: option
1146 ;; - type :: list of strings
1147 ;;
1148 ;; + `:footnote-definition-alist' :: Alist between footnote labels and
1149 ;; their definition, as parsed data. Only non-inlined footnotes
1150 ;; are represented in this alist. Also, every definition isn't
1151 ;; guaranteed to be referenced in the parse tree. The purpose of
1152 ;; this property is to preserve definitions from oblivion
1153 ;; (i.e. when the parse tree comes from a part of the original
1154 ;; buffer), it isn't meant for direct use in a back-end. To
1155 ;; retrieve a definition relative to a reference, use
1156 ;; `org-export-get-footnote-definition' instead.
1157 ;; - category :: option
1158 ;; - type :: alist (STRING . LIST)
1159 ;;
1160 ;; + `:headline-levels' :: Maximum level being exported as an
1161 ;; headline. Comparison is done with the relative level of
1162 ;; headlines in the parse tree, not necessarily with their
1163 ;; actual level.
1164 ;; - category :: option
1165 ;; - type :: integer
1166 ;;
1167 ;; + `:headline-offset' :: Difference between relative and real level
1168 ;; of headlines in the parse tree. For example, a value of -1
1169 ;; means a level 2 headline should be considered as level
1170 ;; 1 (cf. `org-export-get-relative-level').
1171 ;; - category :: tree
1172 ;; - type :: integer
1173 ;;
1174 ;; + `:headline-numbering' :: Alist between headlines and their
1175 ;; numbering, as a list of numbers
1176 ;; (cf. `org-export-get-headline-number').
1177 ;; - category :: tree
1178 ;; - type :: alist (INTEGER . LIST)
1179 ;;
1180 ;; + `:id-alist' :: Alist between ID strings and destination file's
1181 ;; path, relative to current directory. It is used by
1182 ;; `org-export-resolve-id-link' to resolve ID links targeting an
1183 ;; external file.
1184 ;; - category :: option
1185 ;; - type :: alist (STRING . STRING)
1186 ;;
1187 ;; + `:ignore-list' :: List of elements and objects that should be
1188 ;; ignored during export.
1189 ;; - category :: tree
1190 ;; - type :: list of elements and objects
1191 ;;
1192 ;; + `:input-file' :: Full path to input file, if any.
1193 ;; - category :: option
1194 ;; - type :: string or nil
1195 ;;
1196 ;; + `:keywords' :: List of keywords attached to data.
1197 ;; - category :: option
1198 ;; - type :: string
1199 ;;
1200 ;; + `:language' :: Default language used for translations.
1201 ;; - category :: option
1202 ;; - type :: string
1203 ;;
1204 ;; + `:parse-tree' :: Whole parse tree, available at any time during
1205 ;; transcoding.
1206 ;; - category :: option
1207 ;; - type :: list (as returned by `org-element-parse-buffer')
1208 ;;
1209 ;; + `:preserve-breaks' :: Non-nil means transcoding should preserve
1210 ;; all line breaks.
1211 ;; - category :: option
1212 ;; - type :: symbol (nil, t)
1213 ;;
1214 ;; + `:section-numbers' :: Non-nil means transcoding should add
1215 ;; section numbers to headlines.
1216 ;; - category :: option
1217 ;; - type :: symbol (nil, t)
1218 ;;
1219 ;; + `:select-tags' :: List of tags enforcing inclusion of sub-trees
1220 ;; in transcoding. When such a tag is present, subtrees without
1221 ;; it are de facto excluded from the process. See
1222 ;; `use-select-tags'.
1223 ;; - category :: option
1224 ;; - type :: list of strings
1225 ;;
1226 ;; + `:time-stamp-file' :: Non-nil means transcoding should insert
1227 ;; a time stamp in the output.
1228 ;; - category :: option
1229 ;; - type :: symbol (nil, t)
1230 ;;
1231 ;; + `:translate-alist' :: Alist between element and object types and
1232 ;; transcoding functions relative to the current back-end.
1233 ;; Special keys `inner-template', `template' and `plain-text' are
1234 ;; also possible.
1235 ;; - category :: option
1236 ;; - type :: alist (SYMBOL . FUNCTION)
1237 ;;
1238 ;; + `:with-archived-trees' :: Non-nil when archived subtrees should
1239 ;; also be transcoded. If it is set to the `headline' symbol,
1240 ;; only the archived headline's name is retained.
1241 ;; - category :: option
1242 ;; - type :: symbol (nil, t, `headline')
1243 ;;
1244 ;; + `:with-author' :: Non-nil means author's name should be included
1245 ;; in the output.
1246 ;; - category :: option
1247 ;; - type :: symbol (nil, t)
1248 ;;
1249 ;; + `:with-clocks' :: Non-nil means clock keywords should be exported.
1250 ;; - category :: option
1251 ;; - type :: symbol (nil, t)
1252 ;;
1253 ;; + `:with-creator' :: Non-nil means a creation sentence should be
1254 ;; inserted at the end of the transcoded string. If the value
1255 ;; is `comment', it should be commented.
1256 ;; - category :: option
1257 ;; - type :: symbol (`comment', nil, t)
1258 ;;
1259 ;; + `:with-date' :: Non-nil means output should contain a date.
1260 ;; - category :: option
1261 ;; - type :. symbol (nil, t)
1262 ;;
1263 ;; + `:with-drawers' :: Non-nil means drawers should be exported. If
1264 ;; its value is a list of names, only drawers with such names
1265 ;; will be transcoded. If that list starts with `not', drawer
1266 ;; with these names will be skipped.
1267 ;; - category :: option
1268 ;; - type :: symbol (nil, t) or list of strings
1269 ;;
1270 ;; + `:with-email' :: Non-nil means output should contain author's
1271 ;; email.
1272 ;; - category :: option
1273 ;; - type :: symbol (nil, t)
1274 ;;
1275 ;; + `:with-emphasize' :: Non-nil means emphasized text should be
1276 ;; interpreted.
1277 ;; - category :: option
1278 ;; - type :: symbol (nil, t)
1279 ;;
1280 ;; + `:with-fixed-width' :: Non-nil if transcoder should interpret
1281 ;; strings starting with a colon as a fixed-with (verbatim) area.
1282 ;; - category :: option
1283 ;; - type :: symbol (nil, t)
1284 ;;
1285 ;; + `:with-footnotes' :: Non-nil if transcoder should interpret
1286 ;; footnotes.
1287 ;; - category :: option
1288 ;; - type :: symbol (nil, t)
1289 ;;
1290 ;; + `:with-latex' :: Non-nil means `latex-environment' elements and
1291 ;; `latex-fragment' objects should appear in export output. When
1292 ;; this property is set to `verbatim', they will be left as-is.
1293 ;; - category :: option
1294 ;; - type :: symbol (`verbatim', nil, t)
1295 ;;
1296 ;; + `:with-plannings' :: Non-nil means transcoding should include
1297 ;; planning info.
1298 ;; - category :: option
1299 ;; - type :: symbol (nil, t)
1300 ;;
1301 ;; + `:with-priority' :: Non-nil means transcoding should include
1302 ;; priority cookies.
1303 ;; - category :: option
1304 ;; - type :: symbol (nil, t)
1305 ;;
1306 ;; + `:with-smart-quotes' :: Non-nil means activate smart quotes in
1307 ;; plain text.
1308 ;; - category :: option
1309 ;; - type :: symbol (nil, t)
1310 ;;
1311 ;; + `:with-special-strings' :: Non-nil means transcoding should
1312 ;; interpret special strings in plain text.
1313 ;; - category :: option
1314 ;; - type :: symbol (nil, t)
1315 ;;
1316 ;; + `:with-sub-superscript' :: Non-nil means transcoding should
1317 ;; interpret subscript and superscript. With a value of "{}",
1318 ;; only interpret those using curly brackets.
1319 ;; - category :: option
1320 ;; - type :: symbol (nil, {}, t)
1321 ;;
1322 ;; + `:with-tables' :: Non-nil means transcoding should interpret
1323 ;; tables.
1324 ;; - category :: option
1325 ;; - type :: symbol (nil, t)
1326 ;;
1327 ;; + `:with-tags' :: Non-nil means transcoding should keep tags in
1328 ;; headlines. A `not-in-toc' value will remove them from the
1329 ;; table of contents, if any, nonetheless.
1330 ;; - category :: option
1331 ;; - type :: symbol (nil, t, `not-in-toc')
1332 ;;
1333 ;; + `:with-tasks' :: Non-nil means transcoding should include
1334 ;; headlines with a TODO keyword. A `todo' value will only
1335 ;; include headlines with a todo type keyword while a `done'
1336 ;; value will do the contrary. If a list of strings is provided,
1337 ;; only tasks with keywords belonging to that list will be kept.
1338 ;; - category :: option
1339 ;; - type :: symbol (t, todo, done, nil) or list of strings
1340 ;;
1341 ;; + `:with-timestamps' :: Non-nil means transcoding should include
1342 ;; time stamps. Special value `active' (resp. `inactive') ask to
1343 ;; export only active (resp. inactive) timestamps. Otherwise,
1344 ;; completely remove them.
1345 ;; - category :: option
1346 ;; - type :: symbol: (`active', `inactive', t, nil)
1347 ;;
1348 ;; + `:with-toc' :: Non-nil means that a table of contents has to be
1349 ;; added to the output. An integer value limits its depth.
1350 ;; - category :: option
1351 ;; - type :: symbol (nil, t or integer)
1352 ;;
1353 ;; + `:with-todo-keywords' :: Non-nil means transcoding should
1354 ;; include TODO keywords.
1355 ;; - category :: option
1356 ;; - type :: symbol (nil, t)
1359 ;;;; Environment Options
1360 ;;
1361 ;; Environment options encompass all parameters defined outside the
1362 ;; scope of the parsed data. They come from five sources, in
1363 ;; increasing precedence order:
1364 ;;
1365 ;; - Global variables,
1366 ;; - Buffer's attributes,
1367 ;; - Options keyword symbols,
1368 ;; - Buffer keywords,
1369 ;; - Subtree properties.
1370 ;;
1371 ;; The central internal function with regards to environment options
1372 ;; is `org-export-get-environment'. It updates global variables with
1373 ;; "#+BIND:" keywords, then retrieve and prioritize properties from
1374 ;; the different sources.
1375 ;;
1376 ;; The internal functions doing the retrieval are:
1377 ;; `org-export--get-global-options',
1378 ;; `org-export--get-buffer-attributes',
1379 ;; `org-export--parse-option-keyword',
1380 ;; `org-export--get-subtree-options' and
1381 ;; `org-export--get-inbuffer-options'
1382 ;;
1383 ;; Also, `org-export--install-letbind-maybe' takes care of the part
1384 ;; relative to "#+BIND:" keywords.
1387 "Collect export options from the current buffer.
1389 Optional argument BACKEND is a symbol specifying which back-end
1390 specific options to read, if any.
1392 When optional argument SUBTREEP is non-nil, assume the export is
1393 done against the current sub-tree.
1395 Third optional argument EXT-PLIST is a property list with
1396 external parameters overriding Org default settings, but still
1397 inferior to file-local settings."
1398 ;; First install #+BIND variables.
1400 ;; Get and prioritize export options...
1402 ;; ... from global variables...
1404 ;; ... from an external property list...
1405 ext-plist
1406 ;; ... from in-buffer settings...
1408 backend
1410 ;; ... and from subtree, when appropriate.
1412 ;; Eventually add misc. properties.
1414 :back-end
1415 backend
1416 :translate-alist
1418 :footnote-definition-alist
1419 ;; Footnotes definitions must be collected in the original
1420 ;; buffer, as there's no insurance that they will still be in
1421 ;; the parse tree, due to possible narrowing.
1435 alist))))
1436 alist))
1437 :id-alist
1438 ;; Collect id references.
1449 alist))))
1452 "Parse an OPTIONS line and return values as a plist.
1453 Optional argument BACKEND is a symbol specifying which back-end
1454 specific items to read, if any."
1456 ;; Priority is given to back-end specific options.
1458 org-export-options-alist))
1459 plist)
1468 options))
1470 property
1473 plist))
1476 "Get export options in subtree at point.
1477 Optional argument BACKEND is a symbol specifying back-end used
1478 for export. Return options as a plist."
1479 ;; For each buffer keyword, create a headline property setting the
1480 ;; same property in communication channel. The name for the property
1481 ;; is the keyword with "EXPORT_" appended to it.
1484 ;; Make sure point is at an heading.
1486 ;; Take care of EXPORT_TITLE. If it isn't defined, use headline's
1487 ;; title as its fallback value.
1493 plist :title
1496 ;; EXPORT_OPTIONS are parsed in a non-standard way.
1500 ;; Handle other keywords. TITLE keyword is excluded as it has
1501 ;; been handled already.
1509 ;; Export properties are not case-sensitive.
1516 plist
1517 property
1519 ;; Parse VALUE if required.
1523 ;; If BEHAVIOUR is `split' expected value is
1524 ;; a list of strings, not a string.
1527 ;; Look for both general keywords and back-end specific
1528 ;; options, with priority given to the latter.
1530 org-export-options-alist)))
1531 ;; Return value.
1532 plist)))
1535 "Return current buffer export options, as a plist.
1537 Optional argument BACKEND, when non-nil, is a symbol specifying
1538 which back-end specific options should also be read in the
1539 process.
1541 Optional argument FILES is a list of setup files names read so
1542 far, used to avoid circular dependencies.
1544 Assume buffer is in Org mode. Narrowing, if any, is ignored."
1548 ;; 1. Special keywords, as in `org-export-special-keywords'.
1562 ;; Avoid circular dependencies.
1577 ;; 2. Standard options, as in `org-export-options-alist'.
1579 ;; Priority is given to back-end specific options.
1581 org-export-options-alist)))
1596 ;; Handle value depending on specified
1597 ;; BEHAVIOUR.
1602 " "
1614 ;; Parse keywords specified in
1615 ;; `org-element-document-properties'.
1618 ;; Find the property associated to the keyword.
1623 all)))
1628 plist prop
1631 org-element-document-properties))
1632 ;; 3. Return final value.
1633 plist)))
1636 "Return properties related to buffer attributes, as a plist."
1639 ;; Store full path of input file name, or nil. For internal use.
1640 :input-file visited-file
1647 "Return global export options as a plist.
1649 Optional argument BACKEND, if non-nil, is a symbol specifying
1650 which back-end specific export options should also be read in the
1651 process."
1653 ;; Priority is given to back-end specific options.
1655 org-export-options-alist))
1656 plist)
1663 plist
1664 prop
1665 ;; Eval default value provided. If keyword is a member
1666 ;; of `org-element-document-properties', parse it as
1667 ;; a secondary string before storing it.
1672 value
1675 all)
1676 ;; Return value.
1677 plist))
1680 "Install the values from #+BIND lines as local variables.
1681 Variables must be installed before in-buffer options are
1682 retrieved."
1697 ;;;; Tree Properties
1698 ;;
1699 ;; Tree properties are information extracted from parse tree. They
1700 ;; are initialized at the beginning of the transcoding process by
1701 ;; `org-export-collect-tree-properties'.
1702 ;;
1703 ;; Dedicated functions focus on computing the value of specific tree
1704 ;; properties during initialization. Thus,
1705 ;; `org-export--populate-ignore-list' lists elements and objects that
1706 ;; should be skipped during export, `org-export--get-min-level' gets
1707 ;; the minimal exportable level, used as a basis to compute relative
1708 ;; level for headlines. Eventually
1709 ;; `org-export--collect-headline-numbering' builds an alist between
1710 ;; headlines and their numbering.
1713 "Extract tree properties from parse tree.
1715 DATA is the parse tree from which information is retrieved. INFO
1716 is a list holding export options.
1718 Following tree properties are set or updated:
1720 `:exported-data' Hash table used to memoize results from
1721 `org-export-data'.
1723 `:footnote-definition-alist' List of footnotes definitions in
1724 original buffer and current parse tree.
1726 `:headline-offset' Offset between true level of headlines and
1727 local level. An offset of -1 means a headline
1728 of level 2 should be considered as a level
1729 1 headline in the context.
1731 `:headline-numbering' Alist of all headlines as key an the
1732 associated numbering as value.
1734 `:ignore-list' List of elements that should be ignored during
1735 export.
1737 Return updated plist."
1738 ;; Install the parse tree in the communication channel, in order to
1739 ;; use `org-export-get-genealogy' and al.
1741 ;; Get the list of elements and objects to ignore, and put it into
1742 ;; `:ignore-list'. Do not overwrite any user ignore that might have
1743 ;; been done during parse tree filtering.
1746 :ignore-list
1749 ;; Compute `:headline-offset' in order to be able to use
1750 ;; `org-export-get-relative-level'.
1753 :headline-offset
1755 ;; Update footnotes definitions list with definitions in parse tree.
1756 ;; This is required since buffer expansion might have modified
1757 ;; boundaries of footnote definitions contained in the parse tree.
1758 ;; This way, definitions in `footnote-definition-alist' are bound to
1759 ;; match those in the parse tree.
1765 defs)))
1767 ;; Properties order doesn't matter: get the rest of the tree
1768 ;; properties.
1772 info))
1775 "Return minimum exportable headline's level in DATA.
1776 DATA is parsed tree as returned by `org-element-parse-buffer'.
1777 OPTIONS is a plist holding export options."
1788 ;; If no headline was found, for the sake of consistency, set
1789 ;; minimum level to 1 nonetheless.
1793 "Return numbering of all exportable headlines in a parse tree.
1795 DATA is the parse tree. OPTIONS is the plist holding export
1796 options.
1798 Return an alist whose key is a headline and value is its
1799 associated numbering \(in the shape of a list of numbers\) or nil
1800 for a footnotes section."
1808 headline
1810 for idx from 0 to org-export-max-depth
1814 options)))
1817 "Return list of elements and objects to ignore during export.
1818 DATA is the parse tree to traverse. OPTIONS is the plist holding
1819 export options."
1821 walk-data
1822 ;; First find trees containing a select tag, if any.
1826 ;; Collect ignored elements or objects into IGNORE-LIST.
1832 ;; If headline is archived but tree below has
1833 ;; to be skipped, add it to ignore list.
1836 ;; Move into secondary string, if any.
1841 ;; Move into recursive objects/elements.
1843 ;; Main call.
1845 ;; Return value.
1846 ignore))
1849 "Return list of headlines containing a select tag in their tree.
1850 DATA is parsed data as returned by `org-element-parse-buffer'.
1851 INFO is a plist holding export options."
1853 walk-data ; for byte-compiler.
1864 ;; When a select tag is found, mark full
1865 ;; genealogy and every headline within the tree
1866 ;; as acceptable.
1869 genealogy
1871 selected-trees))
1872 ;; Else, continue searching in tree, recursively.
1879 "Non-nil when element or object BLOB should be skipped during export.
1880 OPTIONS is the plist holding export options. SELECTED, when
1881 non-nil, is a list of headlines belonging to a tree with a select
1882 tag."
1889 ;; If `:with-drawers' value starts with `not', ignore
1890 ;; every drawer whose name belong to that list.
1891 ;; Otherwise, ignore drawers whose name isn't in that
1892 ;; list.
1904 ;; Ignore subtrees with an exclude tag.
1907 ;; When a select tag is present in the buffer, ignore any tree
1908 ;; without it.
1910 ;; Ignore commented sub-trees.
1912 ;; Ignore archived subtrees if `:with-archived-trees' is nil.
1914 ;; Ignore tasks, if specified by `:with-tasks' property.
1931 ;; No timestamp allowed.
1933 ;; Only active timestamps allowed and the current one isn't
1934 ;; active.
1938 ;; Only inactive timestamps allowed and the current one isn't
1939 ;; inactive.
1945 \f
1946 ;;; The Transcoder
1947 ;;
1948 ;; `org-export-data' reads a parse tree (obtained with, i.e.
1949 ;; `org-element-parse-buffer') and transcodes it into a specified
1950 ;; back-end output. It takes care of filtering out elements or
1951 ;; objects according to export options and organizing the output blank
1952 ;; lines and white space are preserved. The function memoizes its
1953 ;; results, so it is cheap to call it within translators.
1954 ;;
1955 ;; It is possible to modify locally the back-end used by
1956 ;; `org-export-data' or even use a temporary back-end by using
1957 ;; `org-export-data-with-translations' and
1958 ;; `org-export-data-with-backend'.
1959 ;;
1960 ;; Internally, three functions handle the filtering of objects and
1961 ;; elements during the export. In particular,
1962 ;; `org-export-ignore-element' marks an element or object so future
1963 ;; parse tree traversals skip it, `org-export--interpret-p' tells which
1964 ;; elements or objects should be seen as real Org syntax and
1965 ;; `org-export-expand' transforms the others back into their original
1966 ;; shape
1967 ;;
1968 ;; `org-export-transcoder' is an accessor returning appropriate
1969 ;; translator function for a given element or object.
1972 "Return appropriate transcoder for BLOB.
1973 INFO is a plist containing export directives."
1975 ;; Return contents only for complete parse trees.
1981 "Convert DATA into current back-end format.
1983 DATA is a parse tree, an element or an object or a secondary
1984 string. INFO is a plist holding export options.
1986 Return transcoded string."
1992 ;; Ignored element/object.
1994 ;; Plain text.
2000 info))
2001 ;; Uninterpreted element/object: change it back to Org
2002 ;; syntax and export again resulting raw string.
2006 data
2010 info))
2011 ;; Secondary string.
2014 ;; Element/Object without contents or, as a special case,
2015 ;; headline with archive tag and archived trees restricted
2016 ;; to title only.
2024 ;; Element/Object with contents.
2037 ;; Elements directly containing objects
2038 ;; must have their indentation normalized
2039 ;; first.
2041 data
2042 ;; When normalizing contents of the first
2043 ;; paragraph in an item or a footnote
2044 ;; definition, ignore first line's
2045 ;; indentation: there is none and it
2046 ;; might be misleading.
2051 data)
2058 info))))))))
2059 ;; Final result will be memoized before being returned.
2061 data
2065 ;; Append the same white space between elements or objects as in
2066 ;; the original buffer, and call appropriate filters.
2077 info)))
2078 results)))
2082 "Convert DATA into another format using a given translation table.
2083 DATA is an element, an object, a secondary string or a string.
2084 TRANSLATIONS is an alist between element or object types and
2085 a functions handling them. See `org-export-define-backend' for
2086 more information. INFO is a plist used as a communication
2087 channel."
2089 data
2090 ;; Set-up a new communication channel with TRANSLATIONS as the
2091 ;; translate table and a new hash table for memoization.
2093 info
2095 ;; Size of the hash table is reduced since this function
2096 ;; will probably be used on short trees.
2100 "Convert DATA into BACKEND format.
2102 DATA is an element, an object, a secondary string or a string.
2103 BACKEND is a symbol. INFO is a plist used as a communication
2104 channel.
2106 Unlike to `org-export-with-backend', this function will
2107 recursively convert DATA using BACKEND translation table."
2113 "Non-nil if element or object BLOB should be interpreted during export.
2114 If nil, BLOB will appear as raw Org syntax. Check is done
2115 according to export options INFO, stored as a plist."
2117 ;; ... entities...
2119 ;; ... emphasis...
2122 ;; ... fixed-width areas.
2124 ;; ... footnotes...
2127 ;; ... LaTeX environments and fragments...
2131 ;; ... sub/superscripts...
2137 ;; ... tables...
2142 "Expand a parsed element or object to its original state.
2143 BLOB is either an element or an object. CONTENTS is its
2144 contents, as a string or nil."
2147 blob contents))
2150 "Add ELEMENT to `:ignore-list' in INFO.
2152 Any element in `:ignore-list' will be skipped when using
2153 `org-element-map'. INFO is modified by side effects."
2157 \f
2158 ;;; The Filter System
2159 ;;
2160 ;; Filters allow end-users to tweak easily the transcoded output.
2161 ;; They are the functional counterpart of hooks, as every filter in
2162 ;; a set is applied to the return value of the previous one.
2163 ;;
2164 ;; Every set is back-end agnostic. Although, a filter is always
2165 ;; called, in addition to the string it applies to, with the back-end
2166 ;; used as argument, so it's easy for the end-user to add back-end
2167 ;; specific filters in the set. The communication channel, as
2168 ;; a plist, is required as the third argument.
2169 ;;
2170 ;; From the developer side, filters sets can be installed in the
2171 ;; process with the help of `org-export-define-backend', which
2172 ;; internally stores filters as an alist. Each association has a key
2173 ;; among the following symbols and a function or a list of functions
2174 ;; as value.
2175 ;;
2176 ;; - `:filter-options' applies to the property list containing export
2177 ;; options. Unlike to other filters, functions in this list accept
2178 ;; two arguments instead of three: the property list containing
2179 ;; export options and the back-end. Users can set its value through
2180 ;; `org-export-filter-options-functions' variable.
2181 ;;
2182 ;; - `:filter-parse-tree' applies directly to the complete parsed
2183 ;; tree. Users can set it through
2184 ;; `org-export-filter-parse-tree-functions' variable.
2185 ;;
2186 ;; - `:filter-final-output' applies to the final transcoded string.
2187 ;; Users can set it with `org-export-filter-final-output-functions'
2188 ;; variable
2189 ;;
2190 ;; - `:filter-plain-text' applies to any string not recognized as Org
2191 ;; syntax. `org-export-filter-plain-text-functions' allows users to
2192 ;; configure it.
2193 ;;
2194 ;; - `:filter-TYPE' applies on the string returned after an element or
2195 ;; object of type TYPE has been transcoded. An user can modify
2196 ;; `org-export-filter-TYPE-functions'
2197 ;;
2198 ;; All filters sets are applied with
2199 ;; `org-export-filter-apply-functions' function. Filters in a set are
2200 ;; applied in a LIFO fashion. It allows developers to be sure that
2201 ;; their filters will be applied first.
2202 ;;
2203 ;; Filters properties are installed in communication channel with
2204 ;; `org-export-install-filters' function.
2205 ;;
2206 ;; Eventually, two hooks (`org-export-before-processing-hook' and
2207 ;; `org-export-before-parsing-hook') are run at the beginning of the
2208 ;; export process and just before parsing to allow for heavy structure
2209 ;; modifications.
2212 ;;;; Hooks
2215 "Hook run at the beginning of the export process.
2217 This is run before include keywords and macros are expanded and
2218 Babel code blocks executed, on a copy of the original buffer
2219 being exported. Visibility and narrowing are preserved. Point
2220 is at the beginning of the buffer.
2222 Every function in this hook will be called with one argument: the
2226 "Hook run before parsing an export buffer.
2228 This is run after include keywords and macros have been expanded
2229 and Babel code blocks executed, on a copy of the original buffer
2230 being exported. Visibility and narrowing are preserved. Point
2231 is at the beginning of the buffer.
2233 Every function in this hook will be called with one argument: the
2237 ;;;; Special Filters
2240 "List of functions applied to the export options.
2241 Each filter is called with two arguments: the export options, as
2242 a plist, and the back-end, as a symbol. It must return
2246 "List of functions applied to the parsed tree.
2247 Each filter is called with three arguments: the parse tree, as
2248 returned by `org-element-parse-buffer', the back-end, as
2249 a symbol, and the communication channel, as a plist. It must
2253 "List of functions applied to plain text.
2254 Each filter is called with three arguments: a string which
2255 contains no Org syntax, the back-end, as a symbol, and the
2256 communication channel, as a plist. It must return a string or
2260 "List of functions applied to the transcoded string.
2261 Each filter is called with three arguments: the full transcoded
2262 string, the back-end, as a symbol, and the communication channel,
2263 as a plist. It must return a string that will be used as the
2267 ;;;; Elements Filters
2270 "List of functions applied to a transcoded babel-call.
2271 Each filter is called with three arguments: the transcoded data,
2272 as a string, the back-end, as a symbol, and the communication
2276 "List of functions applied to a transcoded center block.
2277 Each filter is called with three arguments: the transcoded data,
2278 as a string, the back-end, as a symbol, and the communication
2282 "List of functions applied to a transcoded clock.
2283 Each filter is called with three arguments: the transcoded data,
2284 as a string, the back-end, as a symbol, and the communication
2288 "List of functions applied to a transcoded comment.
2289 Each filter is called with three arguments: the transcoded data,
2290 as a string, the back-end, as a symbol, and the communication
2294 "List of functions applied to a transcoded comment-block.
2295 Each filter is called with three arguments: the transcoded data,
2296 as a string, the back-end, as a symbol, and the communication
2300 "List of functions applied to a transcoded diary-sexp.
2301 Each filter is called with three arguments: the transcoded data,
2302 as a string, the back-end, as a symbol, and the communication
2306 "List of functions applied to a transcoded drawer.
2307 Each filter is called with three arguments: the transcoded data,
2308 as a string, the back-end, as a symbol, and the communication
2312 "List of functions applied to a transcoded dynamic-block.
2313 Each filter is called with three arguments: the transcoded data,
2314 as a string, the back-end, as a symbol, and the communication
2318 "List of functions applied to a transcoded example-block.
2319 Each filter is called with three arguments: the transcoded data,
2320 as a string, the back-end, as a symbol, and the communication
2324 "List of functions applied to a transcoded export-block.
2325 Each filter is called with three arguments: the transcoded data,
2326 as a string, the back-end, as a symbol, and the communication
2330 "List of functions applied to a transcoded fixed-width.
2331 Each filter is called with three arguments: the transcoded data,
2332 as a string, the back-end, as a symbol, and the communication
2336 "List of functions applied to a transcoded footnote-definition.
2337 Each filter is called with three arguments: the transcoded data,
2338 as a string, the back-end, as a symbol, and the communication
2342 "List of functions applied to a transcoded headline.
2343 Each filter is called with three arguments: the transcoded data,
2344 as a string, the back-end, as a symbol, and the communication
2348 "List of functions applied to a transcoded horizontal-rule.
2349 Each filter is called with three arguments: the transcoded data,
2350 as a string, the back-end, as a symbol, and the communication
2354 "List of functions applied to a transcoded inlinetask.
2355 Each filter is called with three arguments: the transcoded data,
2356 as a string, the back-end, as a symbol, and the communication
2360 "List of functions applied to a transcoded item.
2361 Each filter is called with three arguments: the transcoded data,
2362 as a string, the back-end, as a symbol, and the communication
2366 "List of functions applied to a transcoded keyword.
2367 Each filter is called with three arguments: the transcoded data,
2368 as a string, the back-end, as a symbol, and the communication
2372 "List of functions applied to a transcoded latex-environment.
2373 Each filter is called with three arguments: the transcoded data,
2374 as a string, the back-end, as a symbol, and the communication
2378 "List of functions applied to a transcoded node-property.
2379 Each filter is called with three arguments: the transcoded data,
2380 as a string, the back-end, as a symbol, and the communication
2384 "List of functions applied to a transcoded paragraph.
2385 Each filter is called with three arguments: the transcoded data,
2386 as a string, the back-end, as a symbol, and the communication
2390 "List of functions applied to a transcoded plain-list.
2391 Each filter is called with three arguments: the transcoded data,
2392 as a string, the back-end, as a symbol, and the communication
2396 "List of functions applied to a transcoded planning.
2397 Each filter is called with three arguments: the transcoded data,
2398 as a string, the back-end, as a symbol, and the communication
2402 "List of functions applied to a transcoded property-drawer.
2403 Each filter is called with three arguments: the transcoded data,
2404 as a string, the back-end, as a symbol, and the communication
2408 "List of functions applied to a transcoded quote block.
2409 Each filter is called with three arguments: the transcoded quote
2410 data, as a string, the back-end, as a symbol, and the
2411 communication channel, as a plist. It must return a string or
2415 "List of functions applied to a transcoded quote-section.
2416 Each filter is called with three arguments: the transcoded data,
2417 as a string, the back-end, as a symbol, and the communication
2421 "List of functions applied to a transcoded section.
2422 Each filter is called with three arguments: the transcoded data,
2423 as a string, the back-end, as a symbol, and the communication
2427 "List of functions applied to a transcoded special block.
2428 Each filter is called with three arguments: the transcoded data,
2429 as a string, the back-end, as a symbol, and the communication
2433 "List of functions applied to a transcoded src-block.
2434 Each filter is called with three arguments: the transcoded data,
2435 as a string, the back-end, as a symbol, and the communication
2439 "List of functions applied to a transcoded table.
2440 Each filter is called with three arguments: the transcoded data,
2441 as a string, the back-end, as a symbol, and the communication
2445 "List of functions applied to a transcoded table-cell.
2446 Each filter is called with three arguments: the transcoded data,
2447 as a string, the back-end, as a symbol, and the communication
2451 "List of functions applied to a transcoded table-row.
2452 Each filter is called with three arguments: the transcoded data,
2453 as a string, the back-end, as a symbol, and the communication
2457 "List of functions applied to a transcoded verse block.
2458 Each filter is called with three arguments: the transcoded data,
2459 as a string, the back-end, as a symbol, and the communication
2463 ;;;; Objects Filters
2466 "List of functions applied to transcoded bold text.
2467 Each filter is called with three arguments: the transcoded data,
2468 as a string, the back-end, as a symbol, and the communication
2472 "List of functions applied to transcoded code text.
2473 Each filter is called with three arguments: the transcoded data,
2474 as a string, the back-end, as a symbol, and the communication
2478 "List of functions applied to a transcoded entity.
2479 Each filter is called with three arguments: the transcoded data,
2480 as a string, the back-end, as a symbol, and the communication
2484 "List of functions applied to a transcoded export-snippet.
2485 Each filter is called with three arguments: the transcoded data,
2486 as a string, the back-end, as a symbol, and the communication
2490 "List of functions applied to a transcoded footnote-reference.
2491 Each filter is called with three arguments: the transcoded data,
2492 as a string, the back-end, as a symbol, and the communication
2496 "List of functions applied to a transcoded inline-babel-call.
2497 Each filter is called with three arguments: the transcoded data,
2498 as a string, the back-end, as a symbol, and the communication
2502 "List of functions applied to a transcoded inline-src-block.
2503 Each filter is called with three arguments: the transcoded data,
2504 as a string, the back-end, as a symbol, and the communication
2508 "List of functions applied to transcoded italic text.
2509 Each filter is called with three arguments: the transcoded data,
2510 as a string, the back-end, as a symbol, and the communication
2514 "List of functions applied to a transcoded latex-fragment.
2515 Each filter is called with three arguments: the transcoded data,
2516 as a string, the back-end, as a symbol, and the communication
2520 "List of functions applied to a transcoded line-break.
2521 Each filter is called with three arguments: the transcoded data,
2522 as a string, the back-end, as a symbol, and the communication
2526 "List of functions applied to a transcoded link.
2527 Each filter is called with three arguments: the transcoded data,
2528 as a string, the back-end, as a symbol, and the communication
2532 "List of functions applied to a transcoded macro.
2533 Each filter is called with three arguments: the transcoded data,
2534 as a string, the back-end, as a symbol, and the communication
2538 "List of functions applied to a transcoded radio-target.
2539 Each filter is called with three arguments: the transcoded data,
2540 as a string, the back-end, as a symbol, and the communication
2544 "List of functions applied to a transcoded statistics-cookie.
2545 Each filter is called with three arguments: the transcoded data,
2546 as a string, the back-end, as a symbol, and the communication
2550 "List of functions applied to transcoded strike-through text.
2551 Each filter is called with three arguments: the transcoded data,
2552 as a string, the back-end, as a symbol, and the communication
2556 "List of functions applied to a transcoded subscript.
2557 Each filter is called with three arguments: the transcoded data,
2558 as a string, the back-end, as a symbol, and the communication
2562 "List of functions applied to a transcoded superscript.
2563 Each filter is called with three arguments: the transcoded data,
2564 as a string, the back-end, as a symbol, and the communication
2568 "List of functions applied to a transcoded target.
2569 Each filter is called with three arguments: the transcoded data,
2570 as a string, the back-end, as a symbol, and the communication
2574 "List of functions applied to a transcoded timestamp.
2575 Each filter is called with three arguments: the transcoded data,
2576 as a string, the back-end, as a symbol, and the communication
2580 "List of functions applied to transcoded underline text.
2581 Each filter is called with three arguments: the transcoded data,
2582 as a string, the back-end, as a symbol, and the communication
2586 "List of functions applied to transcoded verbatim text.
2587 Each filter is called with three arguments: the transcoded data,
2588 as a string, the back-end, as a symbol, and the communication
2592 ;;;; Filters Tools
2593 ;;
2594 ;; Internal function `org-export-install-filters' installs filters
2595 ;; hard-coded in back-ends (developer filters) and filters from global
2596 ;; variables (user filters) in the communication channel.
2597 ;;
2598 ;; Internal function `org-export-filter-apply-functions' takes care
2599 ;; about applying each filter in order to a given data. It ignores
2600 ;; filters returning a nil value but stops whenever a filter returns
2601 ;; an empty string.
2604 "Call every function in FILTERS.
2606 Functions are called with arguments VALUE, current export
2607 back-end and INFO. A function returning a nil value will be
2608 skipped. If it returns the empty string, the process ends and
2609 VALUE is ignored.
2611 Call is done in a LIFO fashion, to be sure that developer
2612 specified filters, if any, are called first."
2621 "Install filters properties in communication channel.
2622 INFO is a plist containing the current communication channel.
2623 Return the updated communication channel."
2625 ;; Install user-defined filters with `org-export-filters-alist'
2626 ;; and filters already in INFO (through ext-plist mechanism).
2633 ;; Filters in INFO will be called
2634 ;; before those user provided.
2637 default-value)))))
2638 org-export-filters-alist)
2639 ;; Prepend back-end specific filters to that list.
2641 ;; Single values get consed, lists are appended.
2646 plist key
2650 ;; Return new communication channel.
2654 \f
2655 ;;; Core functions
2656 ;;
2657 ;; This is the room for the main function, `org-export-as', along with
2658 ;; its derivatives, `org-export-to-buffer', `org-export-to-file' and
2659 ;; `org-export-string-as'. They differ either by the way they output
2660 ;; the resulting code (for the first two) or by the input type (for
2661 ;; the latter).
2662 ;;
2663 ;; `org-export-output-file-name' is an auxiliary function meant to be
2664 ;; used with `org-export-to-file'. With a given extension, it tries
2665 ;; to provide a canonical file name to write export output to.
2666 ;;
2667 ;; Note that `org-export-as' doesn't really parse the current buffer,
2668 ;; but a copy of it (with the same buffer-local variables and
2669 ;; visibility), where macros and include keywords are expanded and
2670 ;; Babel blocks are executed, if appropriate.
2671 ;; `org-export-with-buffer-copy' macro prepares that copy.
2672 ;;
2673 ;; File inclusion is taken care of by
2674 ;; `org-export-expand-include-keyword' and
2675 ;; `org-export--prepare-file-contents'. Structure wise, including
2676 ;; a whole Org file in a buffer often makes little sense. For
2677 ;; example, if the file contains a headline and the include keyword
2678 ;; was within an item, the item should contain the headline. That's
2679 ;; why file inclusion should be done before any structure can be
2680 ;; associated to the file, that is before parsing.
2683 "Return a copy of the current buffer.
2684 The copy preserves Org buffer-local variables, visibility and
2685 narrowing."
2691 new-buf))
2694 "Apply BODY in a copy of the current buffer.
2695 The copy preserves local variables, visibility and contents of
2696 the original buffer. Point is at the beginning of the buffer
2697 when BODY is applied."
2706 ;; Kill copy without confirmation.
2712 "Generate a function duplicating BUFFER.
2714 The copy will preserve local variables, visibility, contents and
2715 narrowing of the original buffer. If a region was active in
2716 BUFFER, contents will be narrowed to that region instead.
2718 The resulting function can be eval'ed at a later time, from
2719 another buffer, effectively cloning the original buffer there."
2723 ;; Buffer local variables.
2733 default-directory
2734 buffer-file-name
2735 buffer-file-coding-system
2736 outline-level
2737 outline-regexp
2738 buffer-invisibility-spec))
2741 ;; Skip unreadable values, as they cannot be
2742 ;; sent to external process.
2746 local-vars)))))
2748 local-vars)
2749 ;; Whole buffer contents.
2754 ;; Narrowing.
2758 ;; Current position of point.
2760 ;; Overlays with invisible property.
2770 ov-set))))
2772 ov-set)))))
2774 ;;;###autoload
2777 "Transcode current Org buffer into BACKEND code.
2779 If narrowing is active in the current buffer, only transcode its
2780 narrowed part.
2782 If a region is active, transcode that region.
2784 When optional argument SUBTREEP is non-nil, transcode the
2785 sub-tree at point, extracting information from the headline
2786 properties first.
2788 When optional argument VISIBLE-ONLY is non-nil, don't export
2789 contents of hidden elements.
2791 When optional argument BODY-ONLY is non-nil, only return body
2792 code, without surrounding template.
2794 Optional argument EXT-PLIST, when provided, is a property list
2795 with external parameters overriding Org default settings, but
2796 still inferior to file-local settings.
2798 Return code as a string."
2802 ;; Narrow buffer to an appropriate region or subtree for
2803 ;; parsing. If parsing subtree, be sure to remove main headline
2804 ;; too.
2812 ;; Initialize communication channel with original buffer
2813 ;; attributes, unavailable in its copy.
2815 ;; Update communication channel and get parse tree. Buffer
2816 ;; isn't parsed directly. Instead, a temporary copy is
2817 ;; created, where include keywords, macros are expanded and
2818 ;; code blocks are evaluated.
2820 ;; Run first hook with current back-end as argument.
2823 ;; Update macro templates since #+INCLUDE keywords might have
2824 ;; added some new ones.
2828 ;; Update radio targets since keyword inclusion might have
2829 ;; added some more.
2831 ;; Run last hook with current back-end as argument.
2834 ;; Update communication channel with environment. Also
2835 ;; install user's and developer's filters.
2840 ;; Expand export-specific set of macros: {{{author}}},
2841 ;; {{{date}}}, {{{email}}} and {{{title}}}. It must be done
2842 ;; once regular macros have been expanded, since document
2843 ;; keywords may contain one of them.
2849 ;; EMAIL is not a parsed keyword: store it as-is.
2853 ;; Call options filters and update export options. We do not
2854 ;; use `org-export-filter-apply-functions' here since the
2855 ;; arity of such filters is different.
2859 ;; Parse buffer and call parse-tree filter on it.
2864 ;; Now tree is complete, compute its properties and add them
2865 ;; to communication channel.
2869 ;; Eventually transcode TREE. Wrap the resulting string into
2870 ;; a template.
2879 ;; Remove all text properties since they cannot be
2880 ;; retrieved from an external process. Finally call
2881 ;; final-output filter and return result.
2887 info))))))))
2889 ;;;###autoload
2892 "Call `org-export-as' with output to a specified buffer.
2894 BACKEND is the back-end used for transcoding, as a symbol.
2896 BUFFER is the output buffer. If it already exists, it will be
2897 erased first, otherwise, it will be created.
2899 Optional arguments SUBTREEP, VISIBLE-ONLY, BODY-ONLY and
2900 EXT-PLIST are similar to those used in `org-export-as', which
2901 see.
2903 If `org-export-copy-to-kill-ring' is non-nil, add buffer contents
2904 to kill ring. Return buffer."
2911 ;; Maybe add buffer contents to kill ring.
2914 ;; Return buffer.
2915 buffer))
2917 ;;;###autoload
2920 "Call `org-export-as' with output to a specified file.
2922 BACKEND is the back-end used for transcoding, as a symbol. FILE
2923 is the name of the output file, as a string.
2925 Optional arguments SUBTREEP, VISIBLE-ONLY, BODY-ONLY and
2926 EXT-PLIST are similar to those used in `org-export-as', which
2927 see.
2929 If `org-export-copy-to-kill-ring' is non-nil, add file contents
2930 to kill ring. Return output file's name."
2931 ;; Checks for FILE permissions. `write-file' would do the same, but
2932 ;; we'd rather avoid needless transcoding of parse tree.
2934 ;; Insert contents to a temporary buffer and write it to FILE.
2940 ;; Maybe add file contents to kill ring.
2943 ;; Return full path.
2944 file)
2946 ;;;###autoload
2948 "Transcode STRING into BACKEND code.
2950 When optional argument BODY-ONLY is non-nil, only return body
2951 code, without preamble nor postamble.
2953 Optional argument EXT-PLIST, when provided, is a property list
2954 with external parameters overriding Org default settings, but
2955 still inferior to file-local settings.
2957 Return code as a string."
2964 "Return output file's name according to buffer specifications.
2966 EXTENSION is a string representing the output file extension,
2967 with the leading dot.
2969 With a non-nil optional argument SUBTREEP, try to determine
2971 of subtree at point.
2973 When optional argument PUB-DIR is set, use it as the publishing
2974 directory.
2976 When optional argument VISIBLE-ONLY is non-nil, don't export
2977 contents of hidden elements.
2979 Return file name as a string."
2982 ;; File name may come from EXPORT_FILE_NAME subtree
2983 ;; property, assuming point is at beginning of said
2984 ;; sub-tree.
2991 ;; File name may be extracted from buffer's associated
2992 ;; file, if any.
2994 ;; Can't determine file name on our own: Ask user.
2998 "Output file: " pub-dir nil nil nil
3002 ;; Build file name. Enforce EXTENSION over whatever user
3003 ;; may have come up with. PUB-DIR, if defined, always has
3004 ;; precedence over any provided path.
3009 extension))
3012 ;; If writing to OUTPUT-FILE would overwrite original file, append
3013 ;; EXTENSION another time to final name.
3016 output-file)))
3019 "Expand every include keyword in buffer.
3020 Optional argument INCLUDED is a list of included file names along
3021 with their line restriction, when appropriate. It is used to
3022 avoid infinite recursion. Optional argument DIR is the current
3023 working directory. It is used to properly resolve relative
3024 paths."
3031 ;; Extract arguments from keyword's value.
3045 ;; Minimal level of included file defaults to the child
3046 ;; level of the current headline, if any, or one. It
3047 ;; only applies is the file is meant to be included as
3048 ;; an Org one.
3056 ;; Remove keyword.
3061 ;; Check if files has already been parsed. Look after
3062 ;; inclusion lines too, as different parts of the same file
3063 ;; can be included too.
3075 ind-str contents ind-str))))
3083 ind-str env contents ind-str))))
3096 "Prepare the contents of FILE for inclusion and return them as a string.
3098 When optional argument LINES is a string specifying a range of
3099 lines, include only those lines.
3101 Optional argument IND, when non-nil, is an integer specifying the
3102 global indentation of returned contents. Since its purpose is to
3103 allow an included file to stay in the same environment it was
3104 created \(i.e. a list item), it doesn't apply past the first
3105 headline encountered.
3107 Optional argument MINLEVEL, when non-nil, is an integer
3108 specifying the level that any top-level headline in the included
3109 file should have."
3125 ;; Remove blank lines at beginning and end of contents. The logic
3126 ;; behind that removal is that blank lines around include keyword
3127 ;; override blank lines in included file.
3136 ;; If IND is set, preserve indentation of include keyword until
3137 ;; the first headline encountered.
3143 ;; Do not move footnote definitions out of column 0.
3149 ;; When MINLEVEL is specified, compute minimal level for headlines
3150 ;; in the file (CUR-MIN), and remove stars to each headline so
3151 ;; that headlines with minimal level have a level of MINLEVEL.
3161 ;; Only change stars, don't bother moving whole
3162 ;; sections.
3169 "Execute every Babel code in the visible part of current buffer."
3170 ;; Get a pristine copy of current buffer so Babel references can be
3171 ;; properly resolved.
3178 \f
3179 ;;; Tools For Back-Ends
3180 ;;
3181 ;; A whole set of tools is available to help build new exporters. Any
3182 ;; function general enough to have its use across many back-ends
3183 ;; should be added here.
3185 ;;;; For Affiliated Keywords
3186 ;;
3187 ;; `org-export-read-attribute' reads a property from a given element
3188 ;; as a plist. It can be used to normalize affiliated keywords'
3189 ;; syntax.
3190 ;;
3191 ;; Since captions can span over multiple lines and accept dual values,
3192 ;; their internal representation is a bit tricky. Therefore,
3193 ;; `org-export-get-caption' transparently returns a given element's
3194 ;; caption as a secondary string.
3197 "Turn ATTRIBUTE property from ELEMENT into a plist.
3199 When optional argument PROPERTY is non-nil, return the value of
3200 that property within attributes.
3204 properties."
3212 "Return caption from ELEMENT as a secondary string.
3214 When optional argument SHORTP is non-nil, return short caption,
3215 as a secondary string, instead.
3217 Caption lines are separated by a white space."
3225 ;;;; For Derived Back-ends
3226 ;;
3227 ;; `org-export-with-backend' is a function allowing to locally use
3228 ;; another back-end to transcode some object or element. In a derived
3229 ;; back-end, it may be used as a fall-back function once all specific
3230 ;; cases have been treated.
3233 "Call a transcoder from BACK-END on DATA.
3234 CONTENTS, when non-nil, is the transcoded contents of DATA
3235 element, as a string. INFO, when non-nil, is the communication
3236 channel used for export, as a plist.."
3246 ;;;; For Export Snippets
3247 ;;
3248 ;; Every export snippet is transmitted to the back-end. Though, the
3249 ;; latter will only retain one type of export-snippet, ignoring
3250 ;; others, based on the former's target back-end. The function
3251 ;; `org-export-snippet-backend' returns that back-end for a given
3252 ;; export-snippet.
3255 "Return EXPORT-SNIPPET targeted back-end as a symbol.
3256 Translation, with `org-export-snippet-translation-alist', is
3257 applied."
3261 back-end))))
3264 ;;;; For Footnotes
3265 ;;
3266 ;; `org-export-collect-footnote-definitions' is a tool to list
3267 ;; actually used footnotes definitions in the whole parse tree, or in
3268 ;; a headline, in order to add footnote listings throughout the
3269 ;; transcoded data.
3270 ;;
3271 ;; `org-export-footnote-first-reference-p' is a predicate used by some
3272 ;; back-ends, when they need to attach the footnote definition only to
3273 ;; the first occurrence of the corresponding label.
3274 ;;
3275 ;; `org-export-get-footnote-definition' and
3276 ;; `org-export-get-footnote-number' provide easier access to
3277 ;; additional information relative to a footnote reference.
3280 "Return an alist between footnote numbers, labels and definitions.
3282 DATA is the parse tree from which definitions are collected.
3283 INFO is the plist used as a communication channel.
3285 Definitions are sorted by order of references. They either
3286 appear as Org data or as a secondary string for inlined
3287 footnotes. Unreferenced definitions are ignored."
3289 collect-fn ; for byte-compiler.
3293 ;; Collect footnote number, label and definition in DATA.
3301 def)
3302 num-alist)
3303 ;; Also search in definition for nested footnotes.
3306 ;; Don't enter footnote definitions since it will happen
3307 ;; when their first reference is found.
3313 "Non-nil when a footnote reference is the first one for its label.
3315 FOOTNOTE-REFERENCE is the footnote reference being considered.
3316 INFO is the plist used as a communication channel."
3318 ;; Anonymous footnotes are always a first reference.
3320 ;; Otherwise, return the first footnote with the same LABEL and
3321 ;; test if it is equal to FOOTNOTE-REFERENCE.
3331 ;; If FN isn't inlined, be sure to traverse its
3332 ;; definition before resuming search. See
3333 ;; comments in `org-export-get-footnote-number'
3334 ;; for more information.
3338 ;; Don't enter footnote definitions since it will
3339 ;; happen when their first reference is found.
3342 footnote-reference)))))
3345 "Return definition of FOOTNOTE-REFERENCE as parsed data.
3346 INFO is the plist used as a communication channel. If no such
3348 string."
3355 "Return number associated to a footnote.
3357 FOOTNOTE is either a footnote reference or a footnote definition.
3358 INFO is the plist used as a communication channel."
3360 seen-refs
3361 search-ref ; For byte-compiler.
3365 ;; Search footnote references through DATA, filling
3366 ;; SEEN-REFS along the way.
3371 ;; Anonymous footnote match: return number.
3374 ;; Labels match: return number.
3377 ;; Anonymous footnote: it's always a new one.
3378 ;; Also, be sure to return nil from the `cond' so
3379 ;; `first-match' doesn't get us out of the loop.
3381 ;; Label not seen so far: add it so SEEN-REFS.
3382 ;;
3383 ;; Also search for subsequent references in
3384 ;; footnote definition so numbering follows
3385 ;; reading logic. Note that we don't have to care
3386 ;; about inline definitions, since
3387 ;; `org-element-map' already traverses them at the
3388 ;; right time.
3389 ;;
3390 ;; Once again, return nil to stay in the loop.
3395 nil))))
3396 ;; Don't enter footnote definitions since it will
3397 ;; happen when their first reference is found.
3402 ;;;; For Headlines
3403 ;;
3404 ;; `org-export-get-relative-level' is a shortcut to get headline
3405 ;; level, relatively to the lower headline level in the parsed tree.
3406 ;;
3407 ;; `org-export-get-headline-number' returns the section number of an
3408 ;; headline, while `org-export-number-to-roman' allows to convert it
3409 ;; to roman numbers.
3410 ;;
3411 ;; `org-export-low-level-p', `org-export-first-sibling-p' and
3412 ;; `org-export-last-sibling-p' are three useful predicates when it
3413 ;; comes to fulfill the `:headline-levels' property.
3414 ;;
3415 ;; `org-export-get-tags', `org-export-get-category' and
3416 ;; `org-export-get-node-property' extract useful information from an
3417 ;; headline or a parent headline. They all handle inheritance.
3420 "Return HEADLINE relative level within current parsed tree.
3421 INFO is a plist holding contextual information."
3426 "Non-nil when HEADLINE is considered as low level.
3428 INFO is a plist used as a communication channel.
3430 A low level headlines has a relative level greater than
3431 `:headline-levels' property value.
3433 Return value is the difference between HEADLINE relative level
3434 and the last level being considered as high enough, or nil."
3441 "Return HEADLINE numbering as a list of numbers.
3442 INFO is a plist holding contextual information."
3446 "Return a non-nil value if HEADLINE element should be numbered.
3447 INFO is a plist used as a communication channel."
3453 "Convert integer N into a roman numeral."
3466 res)))
3469 "Return list of tags associated to ELEMENT.
3471 ELEMENT has either an `headline' or an `inlinetask' type. INFO
3472 is a plist used as a communication channel.
3474 Select tags (see `org-export-select-tags') and exclude tags (see
3475 `org-export-exclude-tags') are removed from the list.
3477 When non-nil, optional argument TAGS should be a list of strings.
3478 Any tag belonging to this list will also be removed.
3480 When optional argument INHERITED is non-nil, tags can also be
3481 inherited from parent headlines and FILETAGS keywords."
3487 ;; Build complete list of inherited tags.
3498 ;; Add FILETAGS keywords and return results.
3502 "Return node PROPERTY value for BLOB.
3504 PROPERTY is an upcase symbol (i.e. `:COOKIE_DATA'). BLOB is an
3505 element or object.
3507 If optional argument INHERITED is non-nil, the value can be
3508 inherited from a parent headline.
3510 Return value is a string or nil."
3522 "Return category for element or object BLOB.
3524 INFO is a plist used as a communication channel.
3526 CATEGORY is automatically inherited from a parent headline, from
3527 #+CATEGORY: keyword or created out of original file name. If all
3531 ;; Almost like `org-export-node-property', but we cannot trust
3532 ;; `plist-member' as every headline has a `:CATEGORY'
3533 ;; property, would it be nil or equal to "???" (which has the
3534 ;; same meaning).
3552 "Return optional title for HEADLINE, as a secondary string.
3553 INFO is a plist used as a communication channel. If no optional
3554 title is defined, fall-back to the regular title."
3559 "Non-nil when HEADLINE is the first sibling in its sub-tree.
3560 INFO is a plist used as a communication channel."
3565 "Non-nil when HEADLINE is the last sibling in its sub-tree.
3566 INFO is a plist used as a communication channel."
3570 ;;;; For Links
3571 ;;
3572 ;; `org-export-solidify-link-text' turns a string into a safer version
3573 ;; for links, replacing most non-standard characters with hyphens.
3574 ;;
3575 ;; `org-export-get-coderef-format' returns an appropriate format
3576 ;; string for coderefs.
3577 ;;
3578 ;; `org-export-inline-image-p' returns a non-nil value when the link
3579 ;; provided should be considered as an inline image.
3580 ;;
3581 ;; `org-export-resolve-fuzzy-link' searches destination of fuzzy links
3582 ;; (i.e. links with "fuzzy" as type) within the parsed tree, and
3583 ;; returns an appropriate unique identifier when found, or nil.
3584 ;;
3585 ;; `org-export-resolve-id-link' returns the first headline with
3586 ;; specified id or custom-id in parse tree, the path to the external
3587 ;; file with the id or nil when neither was found.
3588 ;;
3589 ;; `org-export-resolve-coderef' associates a reference to a line
3590 ;; number in the element it belongs, or returns the reference itself
3591 ;; when the element isn't numbered.
3594 "Take link text S and make a safe target out of it."
3599 "Return format string for code reference link.
3600 PATH is the link path. DESC is its description."
3608 "Non-nil if LINK object points to an inline image.
3610 Optional argument is a set of RULES defining inline images. It
3611 is an alist where associations have the following shape:
3613 \(TYPE . REGEXP)
3615 Applying a rule means apply REGEXP against LINK's path when its
3616 type is TYPE. The function will return a non-nil value if any of
3617 the provided rules is non-nil. The default rule is
3618 `org-export-default-inline-image-rule'.
3620 This only applies to links without a description."
3631 rules)
3632 ;; Return nil if no rule matched.
3633 nil))))
3636 "Resolve a code reference REF.
3638 INFO is a plist used as a communication channel.
3640 Return associated line number in source code, or REF itself,
3641 depending on src-block or example element's switches."
3648 org-coderef-label-format)))
3652 ;; Element containing REF is found. Resolve it to either
3653 ;; a label or a line number, as needed.
3663 "Return LINK destination.
3665 INFO is a plist holding contextual information.
3667 Return value can be an object, an element, or nil:
3669 - If LINK path matches a target object (i.e. <<path>>) or
3672 - If LINK path exactly matches the name affiliated keyword
3673 \(i.e. #+NAME: path) of an element, return that element.
3675 - If LINK path exactly matches any headline name, return that
3676 element. If more than one headline share that name, priority
3677 will be given to the one with the closest common ancestor, if
3678 any, or the first one in the parse tree otherwise.
3680 - Otherwise, return nil.
3683 significant."
3686 ;; Split PATH at white spaces so matches are space
3687 ;; insensitive.
3691 ;; First try to find a matching "<<path>>" unless user specified
3692 ;; he was looking for a headline (path starts with a *
3693 ;; character).
3700 path)
3701 blob))
3702 info t)))
3703 ;; Then try to find an element with a matching "#+NAME: path"
3704 ;; affiliated keyword.
3707 org-element-all-elements
3712 ;; Last case: link either points to a headline or to
3713 ;; nothingness. Try to find the source, with priority given to
3714 ;; headlines with the closest common ancestor. If such candidate
3715 ;; is found, return it, otherwise return nil.
3719 ;; Return first headline whose `:raw-value' property is
3720 ;; NAME in parse tree DATA, or nil. Statistics cookies
3721 ;; are ignored.
3729 name)
3730 headline))
3732 ;; Search among headlines sharing an ancestor with link, from
3733 ;; closest to farthest.
3741 ;; No match with a common ancestor: try full parse-tree.
3745 "Return headline referenced as LINK destination.
3747 INFO is a plist used as a communication channel.
3749 Return value can be the headline element matched in current parse
3753 ;; First check if id is within the current parse tree.
3758 headline))
3760 ;; Otherwise, look for external files.
3764 "Return radio-target object referenced as LINK destination.
3766 INFO is a plist used as a communication channel.
3768 Return value can be a radio-target object or nil. Assume LINK
3775 radio))
3779 ;;;; For References
3780 ;;
3781 ;; `org-export-get-ordinal' associates a sequence number to any object
3782 ;; or element.
3785 "Return ordinal number of an element or object.
3787 ELEMENT is the element or object considered. INFO is the plist
3788 used as a communication channel.
3790 Optional argument TYPES, when non-nil, is a list of element or
3791 object types, as symbols, that should also be counted in.
3792 Otherwise, only provided element's type is considered.
3794 Optional argument PREDICATE is a function returning a non-nil
3795 value if the current element or object should be counted in. It
3796 accepts two arguments: the element or object being considered and
3797 the plist used as a communication channel. This allows to count
3798 only a certain type of objects (i.e. inline images).
3800 Return value is a list of numbers if ELEMENT is a headline or an
3801 item. It is nil for keywords. It represents the footnote number
3802 for footnote definitions and footnote references. If ELEMENT is
3803 a target, return the same value as if ELEMENT was the closest
3804 table, item or headline containing the target. In any other
3805 case, return the sequence number of ELEMENT among elements or
3806 objects of the same type."
3807 ;; A target keyword, representing an invisible target, never has
3808 ;; a sequence number.
3810 ;; Ordinal of a target object refer to the ordinal of the closest
3811 ;; table, item, or headline containing the object.
3815 when
3819 table))
3820 return parent)))
3822 ;; Special case 1: A headline returns its number as a list.
3824 ;; Special case 2: An item returns its number as a list.
3828 struct
3835 ;; Increment counter until ELEMENT is found again.
3846 ;;;; For Src-Blocks
3847 ;;
3848 ;; `org-export-get-loc' counts number of code lines accumulated in
3849 ;; src-block or example-block elements with a "+n" switch until
3850 ;; a given element, excluded. Note: "-n" switches reset that count.
3851 ;;
3852 ;; `org-export-unravel-code' extracts source code (along with a code
3853 ;; references alist) from an `element-block' or `src-block' type
3854 ;; element.
3855 ;;
3856 ;; `org-export-format-code' applies a formatting function to each line
3857 ;; of code, providing relative line number and code reference when
3858 ;; appropriate. Since it doesn't access the original element from
3859 ;; which the source code is coming, it expects from the code calling
3860 ;; it to know if lines should be numbered and if code references
3861 ;; should appear.
3862 ;;
3863 ;; Eventually, `org-export-format-code-default' is a higher-level
3864 ;; function (it makes use of the two previous functions) which handles
3865 ;; line numbering and code references inclusion, and returns source
3866 ;; code in a format suitable for plain text or verbatim output.
3869 "Return accumulated lines of code up to ELEMENT.
3871 INFO is the plist used as a communication channel.
3873 ELEMENT is excluded from count."
3879 ;; ELEMENT is reached: Quit the loop.
3881 ;; Only count lines from src-block and example-block elements
3882 ;; with a "+n" or "-n" switch. A "-n" switch resets counter.
3886 ;; Accumulate locs or reset them.
3890 ;; Return nil to stay in the loop.
3891 nil)))
3893 ;; Return value.
3894 loc))
3897 "Clean source code and extract references out of it.
3899 ELEMENT has either a `src-block' an `example-block' type.
3901 Return a cons cell whose CAR is the source code, cleaned from any
3902 reference and protective comma and CDR is an alist between
3903 relative line number (integer) and name of code reference on that
3904 line (string)."
3906 ;; Get code and clean it. Remove blank lines at its
3907 ;; beginning and end.
3913 ;; If appropriate, remove global indentation.
3916 c
3918 ;; Get format used for references.
3921 org-coderef-label-format)))
3922 ;; Build a regexp matching a loc with a reference.
3927 ;; Return value.
3929 ;; Code with references removed.
3935 ;; Ref line: remove ref, and signal its position in REFS.
3939 ;; Reference alist.
3940 refs)))
3943 "Format CODE by applying FUN line-wise and return it.
3945 CODE is a string representing the code to format. FUN is
3946 a function. It must accept three arguments: a line of
3947 code (string), the current line number (integer) or nil and the
3948 reference associated to the current line (string) or nil.
3950 Optional argument NUM-LINES can be an integer representing the
3951 number of code lines accumulated until the current code. Line
3952 numbers passed to FUN will take it into account. If it is nil,
3953 FUN's second argument will always be nil. This number can be
3954 obtained with `org-export-get-loc' function.
3956 Optional argument REF-ALIST can be an alist between relative line
3957 number (i.e. ignoring NUM-LINES) and the name of the code
3958 reference on it. If it is nil, FUN's third argument will always
3959 be nil. It can be obtained through the use of
3960 `org-export-unravel-code' function."
3972 "Return source code from ELEMENT, formatted in a standard way.
3974 ELEMENT is either a `src-block' or `example-block' element. INFO
3975 is a plist used as a communication channel.
3977 This function takes care of line numbering and code references
3978 inclusion. Line numbers, when applicable, appear at the
3979 beginning of the line, separated from the code by two white
3980 spaces. Code references, on the other hand, appear flushed to
3981 the right, separated by six white spaces from the widest line of
3982 code."
3983 ;; Extract code and references.
3989 ;; Handle line numbering.
3998 ;; Prepare references display, if required. Any reference
3999 ;; should start six columns after the widest line of code,
4000 ;; wrapped with parenthesis.
4005 code
4009 number-str
4010 loc
4016 num-start refs)))
4019 ;;;; For Tables
4020 ;;
4021 ;; `org-export-table-has-special-column-p' and and
4022 ;; `org-export-table-row-is-special-p' are predicates used to look for
4023 ;; meta-information about the table structure.
4024 ;;
4025 ;; `org-table-has-header-p' tells when the rows before the first rule
4026 ;; should be considered as table's header.
4027 ;;
4028 ;; `org-export-table-cell-width', `org-export-table-cell-alignment'
4029 ;; and `org-export-table-cell-borders' extract information from
4030 ;; a table-cell element.
4031 ;;
4032 ;; `org-export-table-dimensions' gives the number on rows and columns
4033 ;; in the table, ignoring horizontal rules and special columns.
4034 ;; `org-export-table-cell-address', given a table-cell object, returns
4035 ;; the absolute address of a cell. On the other hand,
4036 ;; `org-export-get-table-cell-at' does the contrary.
4037 ;;
4038 ;; `org-export-table-cell-starts-colgroup-p',
4039 ;; `org-export-table-cell-ends-colgroup-p',
4040 ;; `org-export-table-row-starts-rowgroup-p',
4041 ;; `org-export-table-row-ends-rowgroup-p',
4042 ;; `org-export-table-row-starts-header-p' and
4043 ;; `org-export-table-row-ends-header-p' indicate position of current
4044 ;; row or cell within the table.
4047 "Non-nil when TABLE has a special column.
4048 All special columns will be ignored during export."
4049 ;; The table has a special column when every first cell of every row
4050 ;; has an empty value or contains a symbol among "/", "#", "!", "$",
4051 ;; "*" "_" and "^". Though, do not consider a first row containing
4052 ;; only empty cells as special.
4068 "Non-nil when TABLE has an header.
4070 INFO is a plist used as a communication channel.
4072 A table has an header when it contains at least two row groups."
4082 info)))
4085 "Non-nil if TABLE-ROW is considered special.
4087 INFO is a plist used as the communication channel.
4089 All special rows will be ignored during export."
4093 ;; A row is special either when...
4095 ;; ... it starts with a field only containing "/",
4097 ;; ... the table contains a special column and the row start
4098 ;; with a marking character among, "^", "_", "$" or "!",
4102 ;; ... it contains only alignment cookies and empty cells.
4108 ;; Since VALUE is a secondary string, the following
4109 ;; checks avoid expanding it with `org-export-data'.
4121 "Return TABLE-ROW's group.
4123 INFO is a plist used as the communication channel.
4125 Return value is the group number, as an integer, or nil special
4126 rows and table rules. Group 1 is also table's header."
4143 "Return TABLE-CELL contents width.
4145 INFO is a plist used as the communication channel.
4147 Return value is the width given by the last width cookie in the
4148 same column as TABLE-CELL, or nil."
4153 cookie-width)
4157 ;; In a special row, try to find a width cookie at COLUMN.
4161 ;; The following checks avoid expanding unnecessarily the
4162 ;; cell with `org-export-data'
4170 ;; Ignore table rules.
4173 ;; Return value.
4174 cookie-width))
4177 "Return TABLE-CELL contents alignment.
4179 INFO is a plist used as the communication channel.
4181 Return alignment as specified by the last alignment cookie in the
4182 same column as TABLE-CELL. If no such cookie is found, a default
4183 alignment value will be deduced from fraction of numbers in the
4184 column (see `org-table-number-fraction' for more information).
4185 Possible values are `left', `right' and `center'."
4192 cookie-align)
4196 ;; In a special row, try to find an alignment cookie at
4197 ;; COLUMN.
4201 ;; Since VALUE is a secondary string, the following checks
4202 ;; avoid useless expansion through `org-export-data'.
4210 ;; Ignore table rules.
4212 ;; In a standard row, check if cell's contents are expressing
4213 ;; some kind of number. Increase NUMBER-CELLS accordingly.
4214 ;; Though, don't bother if an alignment cookie has already
4215 ;; defined cell's alignment.
4220 info)))
4225 ;; Return value. Alignment specified by cookies has precedence
4226 ;; over alignment deduced from cells contents.
4235 "Return TABLE-CELL borders.
4237 INFO is a plist used as a communication channel.
4239 Return value is a list of symbols, or nil. Possible values are:
4240 `top', `bottom', `above', `below', `left' and `right'. Note:
4241 `top' (resp. `bottom') only happen for a cell in the first
4242 row (resp. last row) of the table, ignoring table rules, if any.
4244 Returned borders ignore special rows."
4247 borders)
4248 ;; Top/above border? TABLE-CELL has a border above when a rule
4249 ;; used to demarcate row groups can be found above. Hence,
4250 ;; finding a rule isn't sufficient to push `above' in BORDERS:
4251 ;; another regular row has to be found above that rule.
4260 ;; Look at every row before the current one.
4262 ;; No rule above, or rule found starts the table (ignoring any
4263 ;; special row): TABLE-CELL is at the top of the table.
4266 ;; Bottom/below border? TABLE-CELL has a border below when next
4267 ;; non-regular row below is a rule.
4276 ;; Look at every row after the current one.
4278 ;; No rule below, or rule found ends the table (modulo some
4279 ;; special row): TABLE-CELL is at the bottom of the table.
4282 ;; Right/left borders? They can only be specified by column
4283 ;; groups. Column groups are defined in a row starting with "/".
4284 ;; Also a column groups row only contains "<", "<>", ">" or blank
4285 ;; cells.
4302 ;; There's a left border when previous cell, if
4303 ;; any, ends a group, or current one starts one.
4309 ;; There's a right border when next cell, if any,
4310 ;; starts a group, or current one ends one.
4317 ;; Table rows are read in reverse order so last column groups
4318 ;; row has precedence over any previous one.
4320 ;; Return value.
4321 borders))
4324 "Non-nil when TABLE-CELL is at the beginning of a row group.
4325 INFO is a plist used as a communication channel."
4326 ;; A cell starts a column group either when it is at the beginning
4327 ;; of a row (or after the special column, if any) or when it has
4328 ;; a left border.
4331 table-cell)
4335 "Non-nil when TABLE-CELL is at the end of a row group.
4336 INFO is a plist used as a communication channel."
4337 ;; A cell ends a column group either when it is at the end of a row
4338 ;; or when it has a right border.
4341 table-cell)
4345 "Non-nil when TABLE-ROW is at the beginning of a column group.
4346 INFO is a plist used as a communication channel."
4354 "Non-nil when TABLE-ROW is at the end of a column group.
4355 INFO is a plist used as a communication channel."
4363 "Non-nil when TABLE-ROW is the first table header's row.
4364 INFO is a plist used as a communication channel."
4371 "Non-nil when TABLE-ROW is the last table header's row.
4372 INFO is a plist used as a communication channel."
4379 "Return TABLE dimensions.
4381 INFO is a plist used as a communication channel.
4383 Return value is a CONS like (ROWS . COLUMNS) where
4384 ROWS (resp. COLUMNS) is the number of exportable
4385 rows (resp. columns)."
4387 ;; Set number of rows, and extract first one.
4393 ;; Set number of columns.
4395 ;; Return value.
4399 "Return address of a regular TABLE-CELL object.
4401 TABLE-CELL is the cell considered. INFO is a plist used as
4402 a communication channel.
4404 Address is a CONS cell (ROW . COLUMN), where ROW and COLUMN are
4405 zero-based index. Only exportable cells are considered. The
4406 function returns nil for other cells."
4409 ;; Ignore cells in special rows or in special column.
4414 ;; Row number.
4422 ;; Column number.
4430 "Return regular table-cell object at ADDRESS in TABLE.
4432 Address is a CONS cell (ROW . COLUMN), where ROW and COLUMN are
4433 zero-based index. TABLE is a table type element. INFO is
4434 a plist used as a communication channel.
4436 If no table-cell, among exportable cells, is found at ADDRESS,
4437 return nil."
4440 ;; Row at (car address) or nil.
4448 'table-cell
4455 ;;;; For Tables Of Contents
4456 ;;
4457 ;; `org-export-collect-headlines' builds a list of all exportable
4458 ;; headline elements, maybe limited to a certain depth. One can then
4459 ;; easily parse it and transcode it.
4460 ;;
4461 ;; Building lists of tables, figures or listings is quite similar.
4462 ;; Once the generic function `org-export-collect-elements' is defined,
4463 ;; `org-export-collect-tables', `org-export-collect-figures' and
4464 ;; `org-export-collect-listings' can be derived from it.
4467 "Collect headlines in order to build a table of contents.
4469 INFO is a plist used as a communication channel.
4471 When optional argument N is an integer, it specifies the depth of
4472 the table of contents. Otherwise, it is set to the value of the
4473 last headline level. See `org-export-headline-levels' for more
4474 information.
4476 Return a list of all exportable headlines as parsed elements.
4477 Footnote sections, if any, will be ignored."
4482 ;; Strip contents from HEADLINE.
4485 info))
4488 "Collect referenceable elements of a determined type.
4490 TYPE can be a symbol or a list of symbols specifying element
4491 types to search. Only elements with a caption are collected.
4493 INFO is a plist used as a communication channel.
4495 When non-nil, optional argument PREDICATE is a function accepting
4496 one argument, an element of type TYPE. It returns a non-nil
4497 value when that element should be collected.
4499 Return a list of all elements found, in order of appearance."
4504 element))
4505 info))
4508 "Build a list of tables.
4509 INFO is a plist used as a communication channel.
4511 Return a list of table elements with a caption."
4515 "Build a list of figures.
4517 INFO is a plist used as a communication channel. PREDICATE is
4518 a function which accepts one argument: a paragraph element and
4519 whose return value is non-nil when that element should be
4520 collected.
4522 A figure is a paragraph type element, with a caption, verifying
4524 a vague concept that may depend on back-end.
4526 Return a list of elements recognized as figures."
4530 "Build a list of src blocks.
4532 INFO is a plist used as a communication channel.
4534 Return a list of src-block elements with a caption."
4538 ;;;; Smart Quotes
4539 ;;
4540 ;; The main function for the smart quotes sub-system is
4541 ;; `org-export-activate-smart-quotes', which replaces every quote in
4542 ;; a given string from the parse tree with its "smart" counterpart.
4543 ;;
4544 ;; Dictionary for smart quotes is stored in
4545 ;; `org-export-smart-quotes-alist'.
4546 ;;
4547 ;; Internally, regexps matching potential smart quotes (checks at
4548 ;; string boundaries are also necessary) are defined in
4549 ;; `org-export-smart-quotes-regexps'.
4586 "Smart quotes translations.
4588 Alist whose CAR is a language string and CDR is an alist with
4589 quote type as key and a plist associating various encodings to
4590 their translation as value.
4592 A quote type can be any symbol among `opening-double-quote',
4593 `closing-double-quote', `opening-single-quote',
4594 `closing-single-quote' and `apostrophe'.
4596 Valid encodings include `:utf-8', `:html', `:latex' and
4597 `:texinfo'.
4603 ;; Possible opening quote at beginning of string.
4605 ;; Possible closing quote at beginning of string.
4607 ;; Possible apostrophe at beginning of string.
4609 ;; Opening single and double quotes.
4611 ;; Closing single and double quotes.
4613 ;; Apostrophe.
4615 ;; Possible opening quote at end of string.
4617 ;; Possible closing quote at end of string.
4619 ;; Possible apostrophe at end of string.
4621 "List of regexps matching a quote or an apostrophe.
4627 ENCODING is a symbol among `:html', `:latex', `:texinfo' and
4628 `:utf-8'. INFO is a plist used as a communication channel.
4630 The function has to retrieve information about string
4631 surroundings in parse tree. It can only happen with an
4632 unmodified string. Thus, if S has already been through another
4633 process, a non-nil ORIGINAL optional argument will provide that
4634 original string.
4636 Return the new string."
4639 ;; Try to be flexible when computing number of blanks
4640 ;; before object. The previous object may be a string
4641 ;; introduced by the back-end and not completely parsed.
4644 ;; A string with missing `:post-blank'
4645 ;; property.
4649 ;; Fallback value.
4654 ;; Return smart quote associated to a give quote Q, as
4655 ;; a string. TYPE is a symbol among `open', `close' and
4656 ;; `apostrophe'.
4666 org-export-smart-quotes-alist))))
4667 encoding)
4668 q)))))
4670 ;; Only a quote: no regexp can match. We have to check both
4671 ;; sides and decide what to do.
4679 ;; 1. Replace quote character at the beginning of S.
4681 ;; Apostrophe?
4687 ;; Closing quote?
4693 ;; Opening quote?
4699 ;; 2. Replace quotes in the middle of the string.
4701 ;; Opening quotes.
4707 ;; Closing quotes.
4713 ;; Apostrophes.
4718 ;; 3. Replace quote character at the end of S.
4720 ;; Apostrophe?
4725 ;; Closing quote?
4731 ;; Opening quote?
4736 ;; Return string with smart quotes.
4737 s))))
4739 ;;;; Topology
4740 ;;
4741 ;; Here are various functions to retrieve information about the
4742 ;; neighbourhood of a given element or object. Neighbours of interest
4743 ;; are direct parent (`org-export-get-parent'), parent headline
4744 ;; (`org-export-get-parent-headline'), first element containing an
4745 ;; object, (`org-export-get-parent-element'), parent table
4746 ;; (`org-export-get-parent-table'), previous element or object
4747 ;; (`org-export-get-previous-element') and next element or object
4748 ;; (`org-export-get-next-element').
4749 ;;
4750 ;; `org-export-get-genealogy' returns the full genealogy of a given
4751 ;; element or object, from closest parent to full parse tree.
4754 "Return BLOB parent or nil.
4755 BLOB is the element or object considered."
4759 "Return full genealogy relative to a given element or object.
4761 BLOB is the element or object being considered.
4763 Ancestors are returned from closest to farthest, the last one
4764 being the full parse tree."
4771 "Return BLOB parent headline or nil.
4772 BLOB is the element or object being considered."
4776 parent))
4779 "Return first element containing OBJECT or nil.
4780 OBJECT is the object to consider."
4784 parent))
4787 "Return OBJECT parent table or nil.
4788 OBJECT is either a `table-cell' or `table-element' type object."
4792 parent))
4795 "Return previous element or object.
4797 BLOB is an element or object. INFO is a plist used as
4798 a communication channel. Return previous exportable element or
4799 object, a string, or nil.
4801 When optional argument N is a positive integer, return a list
4802 containing up to N siblings before BLOB, from farthest to
4803 closest. With any other non-nil value, return a list containing
4804 all of them."
4806 ;; An object can belong to the contents of its parent or
4807 ;; to a secondary string. We check the latter option
4808 ;; first.
4811 org-element-all-elements))
4815 org-element-secondary-value-alist))
4816 parent)))
4819 prev)
4828 prev)))
4831 "Return next element or object.
4833 BLOB is an element or object. INFO is a plist used as
4834 a communication channel. Return next exportable element or
4835 object, a string, or nil.
4837 When optional argument N is a positive integer, return a list
4838 containing up to N siblings after BLOB, from closest to farthest.
4839 With any other non-nil value, return a list containing all of
4840 them."
4842 ;; An object can belong to the contents of its parent or to
4843 ;; a secondary string. We check the latter option first.
4846 org-element-all-objects))
4850 org-element-secondary-value-alist))
4851 parent)))
4854 next)
4862 siblings)
4866 ;;;; Translation
4867 ;;
4868 ;; `org-export-translate' translates a string according to language
4869 ;; specified by LANGUAGE keyword or `org-export-language-setup'
4870 ;; variable and a specified charset. `org-export-dictionary' contains
4871 ;; the dictionary used for the translation.
4993 "Dictionary for export engine.
4995 Alist whose CAR is the string to translate and CDR is an alist
4996 whose CAR is the language string and CDR is a plist whose
4997 properties are possible charsets and values translated terms.
4999 It is used as a database for `org-export-translate'. Since this
5000 function returns the string as-is if no translation was found,
5001 the variable only needs to record values different from the
5005 "Translate string S according to language specification.
5007 ENCODING is a symbol among `:ascii', `:html', `:latex', `:latin1'
5008 and `:utf-8'. INFO is a plist used as a communication channel.
5010 Translation depends on `:language' property. Return the
5011 translated string. If no translation is found, try to fall back
5012 to `:default' encoding. If it fails, return S."
5018 s)))
5021 \f
5022 ;;; Asynchronous Export
5023 ;;
5024 ;; `org-export-async-start' is the entry point for asynchronous
5025 ;; export. It recreates current buffer (including visibility,
5026 ;; narrowing and visited file) in an external Emacs process, and
5027 ;; evaluates a command there. It then applies a function on the
5028 ;; returned results in the current process.
5029 ;;
5030 ;; Asynchronously generated results are never displayed directly.
5031 ;; Instead, they are stored in `org-export-stack-contents'. They can
5032 ;; then be retrieved by calling `org-export-stack'.
5033 ;;
5034 ;; Export Stack is viewed through a dedicated major mode
5035 ;;`org-export-stack-mode' and tools: `org-export-stack-refresh',
5036 ;;`org-export-stack-delete', `org-export-stack-view' and
5037 ;;`org-export-stack-clear'.
5038 ;;
5039 ;; For back-ends, `org-export-add-to-stack' add a new source to stack.
5040 ;; It should used whenever `org-export-async-start' is called.
5043 "Call function FUN on the results returned by BODY evaluation.
5045 BODY evaluation happens in an asynchronous process, from a buffer
5046 which is an exact copy of the current one.
5048 Use `org-export-add-to-stack' in FUN in order to register results
5049 in the stack. Examples for, respectively a temporary buffer and
5050 a file are:
5052 \(org-export-async-start
5053 \(lambda (output)
5055 \(erase-buffer)
5056 \(insert output)
5057 \(goto-char (point-min))
5058 \(org-export-add-to-stack (current-buffer) 'backend)))
5059 `(org-export-as 'backend ,subtreep ,visible-only ,body-only ',ext-plist))
5061 and
5063 \(org-export-async-start
5064 \(lambda (f) (org-export-add-to-stack f 'backend))
5065 `(expand-file-name
5066 \(org-export-to-file
5067 'backend ,outfile ,subtreep ,visible-only ,body-only ',ext-plist)))"
5070 ;; Write the full sexp evaluating BODY in a copy of the current
5071 ;; buffer to a temporary file, as it may be too long for program
5072 ;; args in `start-process'.
5079 "%S"
5082 ;; Initialize `org-mode' and export framework in the
5083 ;; external process.
5086 ;; Re-create current buffer there.
5089 ;; Sexp to evaluate in the buffer.
5091 ;; Start external process.
5094 (,process
5099 "-l" org-export-async-init-file
5101 ;; Register running process in stack.
5103 ;; Set-up sentinel in order to catch results.
5105 ,process
5129 "Add a new result to export stack if not present already.
5131 SOURCE is a buffer or a file name containing export results.
5132 BACKEND is a symbol representing export back-end used to generate
5133 it.
5135 Entries already pointing to SOURCE and unavailable entries are
5136 removed beforehand. Return the new stack."
5142 "Menu for asynchronous export results and running processes."
5152 "Return source from export results at point in stack."
5159 source
5160 ;; SOURCE is not consistent with current line. The stack
5161 ;; view is outdated.
5165 "Remove all entries from export stack."
5170 "Refresh the asynchronous export stack.
5171 DUMMY is ignored. Unavailable sources are removed from the list.
5172 Return the new stack."
5182 ;; Back-end.
5184 ;; Age.
5187 ;; Compute age of the results.
5189 "%4h:%.2m "
5191 ;; Source.
5196 ;; Clear stack from exited processes, dead buffers or
5197 ;; non-existent files.
5209 "Remove export results at point from stack.
5210 If optional argument SOURCE is non-nil, remove it instead."
5215 org-export-stack-contents))))
5218 "View export results at point in stack.
5219 With an optional prefix argument IN-EMACS, force viewing files
5220 within Emacs."
5234 (define-key km "p" 'previous-line)
5235 (define-key km "\C-p" 'previous-line)
5236 (define-key km "\C-?" 'previous-line)
5237 (define-key km [up] 'previous-line)
5238 (define-key km "C" 'org-export-stack-clear)
5239 (define-key km "v" 'org-export-stack-view)
5240 (define-key km (kbd "RET") 'org-export-stack-view)
5241 (define-key km "d" 'org-export-stack-remove)
5242 km)
5243 "Keymap for Org Export Stack.")
5245 (define-derived-mode org-export-stack-mode special-mode "Org-Stack"
5246 "Mode for displaying asynchronous export stack.
5249 stack.
5251 In an Org Export Stack buffer, use \\<org-export-stack-mode-map>\\[org-export-stack-view] to view export output
5252 on current line, \\[org-export-stack-remove] to remove it from the stack and \\[org-export-stack-clear] to clear
5253 stack completely.
5255 Removing entries in an Org Export Stack buffer doesn't affect
5256 files or buffers, only the display.
5259 (abbrev-mode 0)
5260 (auto-fill-mode 0)
5261 (setq buffer-read-only t
5262 buffer-undo-list t
5263 truncate-lines t
5264 header-line-format
5265 '(:eval
5266 (format " %-12s | %6s | %s" "Back-End" "Age" "Source")))
5267 (add-hook 'post-command-hook 'org-export-stack-refresh nil t)
5268 (set (make-local-variable 'revert-buffer-function)
5269 'org-export-stack-refresh))
5272 \f
5273 ;;; The Dispatcher
5274 ;;
5275 ;; `org-export-dispatch' is the standard interactive way to start an
5276 ;; export process. It uses `org-export--dispatch-ui' as a subroutine
5277 ;; for its interface, which, in turn, delegates response to key
5278 ;; pressed to `org-export--dispatch-action'.
5280 ;;;###autoload
5281 (defun org-export-dispatch (&optional arg)
5282 "Export dispatcher for Org mode.
5284 It provides an access to common export related tasks in a buffer.
5285 Its interface comes in two flavours: standard and expert.
5287 While both share the same set of bindings, only the former
5288 displays the valid keys associations in a dedicated buffer.
5289 Scrolling (resp. line-wise motion) in this buffer is done with
5290 SPC and DEL (resp. C-n and C-p) keys.
5292 Set variable `org-export-dispatch-use-expert-ui' to switch to one
5293 flavour or the other.
5296 of options used back then, on the current buffer.
5298 When ARG is \\[universal-argument] \\[universal-argument], display the asynchronous export stack."
5299 (interactive "P")
5300 (let* ((input
5301 (cond ((equal arg '(16)) '(stack))
5302 ((and arg org-export-dispatch-last-action))
5303 (t (save-window-excursion
5304 (unwind-protect
5305 ;; Store this export command.
5306 (setq org-export-dispatch-last-action
5307 (org-export--dispatch-ui
5308 (list org-export-initial-scope
5309 (and org-export-in-background 'async))
5310 nil
5311 org-export-dispatch-use-expert-ui))
5312 (and (get-buffer "*Org Export Dispatcher*")
5313 (kill-buffer "*Org Export Dispatcher*")))))))
5314 (action (car input))
5315 (optns (cdr input)))
5316 (case action
5317 ;; First handle special hard-coded actions.
5318 (stack (org-export-stack))
5319 (publish-current-file
5320 (org-publish-current-file (memq 'force optns) (memq 'async optns)))
5321 (publish-current-project
5322 (org-publish-current-project (memq 'force optns) (memq 'async optns)))
5323 (publish-choose-project
5324 (org-publish (assoc (org-icompleting-read
5325 "Publish project: "
5326 org-publish-project-alist nil t)
5327 org-publish-project-alist)
5328 (memq 'force optns)
5329 (memq 'async optns)))
5330 (publish-all (org-publish-all (memq 'force optns) (memq 'async optns)))
5331 (otherwise (funcall action
5332 ;; Return a symbol instead of a list to ease
5333 ;; asynchronous export macro use.
5334 (and (memq 'async optns) t)
5335 (and (memq 'subtree optns) t)
5336 (and (memq 'visible optns) t)
5337 (and (memq 'body optns) t))))))
5339 (defun org-export--dispatch-ui (options first-key expertp)
5340 "Handle interface for `org-export-dispatch'.
5342 OPTIONS is a list containing current interactive options set for
5343 export. It can contain any of the following symbols:
5344 `body' toggles a body-only export
5345 `subtree' restricts export to current subtree
5346 `visible' restricts export to visible part of buffer.
5347 `force' force publishing files.
5348 `async' use asynchronous export process
5350 FIRST-KEY is the key pressed to select the first level menu. It
5351 is nil when this menu hasn't been selected yet.
5353 EXPERTP, when non-nil, triggers expert UI. In that case, no help
5354 buffer is provided, but indications about currently active
5355 options are given in the prompt. Moreover, \[?] allows to switch
5356 back to standard interface."
5357 (let* ((fontify-key
5358 (lambda (key &optional access-key)
5359 ;; Fontify KEY string. Optional argument ACCESS-KEY, when
5360 ;; non-nil is the required first-level key to activate
5361 ;; KEY. When its value is t, activate KEY independently
5362 ;; on the first key, if any. A nil value means KEY will
5363 ;; only be activated at first level.
5364 (if (or (eq access-key t) (eq access-key first-key))
5365 (org-propertize key 'face 'org-warning)
5366 key)))
5367 (fontify-value
5368 (lambda (value)
5369 ;; Fontify VALUE string.
5370 (org-propertize value 'face 'font-lock-variable-name-face)))
5371 ;; Prepare menu entries by extracting them from
5372 ;; `org-export-registered-backends', and sorting them by
5373 ;; access key and by ordinal, if any.
5374 (backends
5375 (sort
5376 (sort
5377 (delq nil
5378 (mapcar
5379 (lambda (b)
5380 (let ((name (car b)))
5381 (catch 'ignored
5382 ;; Ignore any back-end belonging to
5383 ;; `org-export-invisible-backends' or derived
5384 ;; from one of them.
5385 (dolist (ignored org-export-invisible-backends)
5386 (when (org-export-derived-backend-p name ignored)
5387 (throw 'ignored nil)))
5388 (org-export-backend-menu name))))
5389 org-export-registered-backends))
5390 (lambda (a b)
5391 (let ((key-a (nth 1 a))
5392 (key-b (nth 1 b)))
5393 (cond ((and (numberp key-a) (numberp key-b))
5394 (< key-a key-b))
5395 ((numberp key-b) t)))))
5396 (lambda (a b) (< (car a) (car b)))))
5397 ;; Compute a list of allowed keys based on the first key
5398 ;; pressed, if any. Some keys (?^B, ?^V, ?^S, ?^F, ?^A
5399 ;; and ?q) are always available.
5400 (allowed-keys
5401 (nconc (list 2 22 19 6 1)
5402 (if (not first-key) (org-uniquify (mapcar 'car backends))
5403 (let (sub-menu)
5404 (dolist (backend backends (sort (mapcar 'car sub-menu) '<))
5405 (when (eq (car backend) first-key)
5406 (setq sub-menu (append (nth 2 backend) sub-menu))))))
5407 (cond ((eq first-key ?P) (list ?f ?p ?x ?a))
5408 ((not first-key) (list ?P)))
5409 (list ?&)
5410 (when expertp (list ??))
5411 (list ?q)))
5412 ;; Build the help menu for standard UI.
5413 (help
5414 (unless expertp
5415 (concat
5416 ;; Options are hard-coded.
5417 (format "Options
5418 [%s] Body only: %s [%s] Visible only: %s
5419 [%s] Export scope: %s [%s] Force publishing: %s
5421 (funcall fontify-key "C-b" t)
5422 (funcall fontify-value
5423 (if (memq 'body options) "On " "Off"))
5424 (funcall fontify-key "C-v" t)
5425 (funcall fontify-value
5426 (if (memq 'visible options) "On " "Off"))
5427 (funcall fontify-key "C-s" t)
5428 (funcall fontify-value
5429 (if (memq 'subtree options) "Subtree" "Buffer "))
5430 (funcall fontify-key "C-f" t)
5431 (funcall fontify-value
5432 (if (memq 'force options) "On " "Off"))
5433 (funcall fontify-key "C-a" t)
5434 (funcall fontify-value
5435 (if (memq 'async options) "On " "Off")))
5436 ;; Display registered back-end entries. When a key
5437 ;; appears for the second time, do not create another
5438 ;; entry, but append its sub-menu to existing menu.
5439 (let (last-key)
5440 (mapconcat
5441 (lambda (entry)
5442 (let ((top-key (car entry)))
5443 (concat
5444 (unless (eq top-key last-key)
5445 (setq last-key top-key)
5447 (funcall fontify-key (char-to-string top-key))
5448 (nth 1 entry)))
5449 (let ((sub-menu (nth 2 entry)))
5450 (unless (functionp sub-menu)
5451 ;; Split sub-menu into two columns.
5452 (let ((index -1))
5453 (concat
5454 (mapconcat
5455 (lambda (sub-entry)
5456 (incf index)
5457 (format
5458 (if (zerop (mod index 2)) " [%s] %-26s"
5460 (funcall fontify-key
5461 (char-to-string (car sub-entry))
5462 top-key)
5463 (nth 1 sub-entry)))
5464 sub-menu "")
5466 backends ""))
5467 ;; Publishing menu is hard-coded.
5469 [%s] Current file [%s] Current project
5471 (funcall fontify-key "P")
5472 (funcall fontify-key "f" ?P)
5473 (funcall fontify-key "p" ?P)
5474 (funcall fontify-key "x" ?P)
5475 (funcall fontify-key "a" ?P))
5477 (format "\[%s] %s"
5478 (funcall fontify-key "q" t)
5479 (if first-key "Main menu" "Exit")))))
5480 ;; Build prompts for both standard and expert UI.
5481 (standard-prompt (unless expertp "Export command: "))
5482 (expert-prompt
5483 (when expertp
5484 (format
5485 "Export command (C-%s%s%s%s%s) [%s]: "
5486 (if (memq 'body options) (funcall fontify-key "b" t) "b")
5487 (if (memq 'visible options) (funcall fontify-key "v" t) "v")
5488 (if (memq 'subtree options) (funcall fontify-key "s" t) "s")
5489 (if (memq 'force options) (funcall fontify-key "f" t) "f")
5490 (if (memq 'async options) (funcall fontify-key "a" t) "a")
5491 (mapconcat (lambda (k)
5492 ;; Strip control characters.
5493 (unless (< k 27) (char-to-string k)))
5494 allowed-keys "")))))
5495 ;; With expert UI, just read key with a fancy prompt. In standard
5496 ;; UI, display an intrusive help buffer.
5497 (if expertp
5498 (org-export--dispatch-action
5499 expert-prompt allowed-keys backends options first-key expertp)
5500 ;; At first call, create frame layout in order to display menu.
5501 (unless (get-buffer "*Org Export Dispatcher*")
5502 (delete-other-windows)
5503 (org-switch-to-buffer-other-window
5504 (get-buffer-create "*Org Export Dispatcher*"))
5505 (setq cursor-type nil
5506 header-line-format "Use SPC, DEL, C-n or C-p to navigate.")
5507 ;; Make sure that invisible cursor will not highlight square
5508 ;; brackets.
5509 (set-syntax-table (copy-syntax-table))
5510 (modify-syntax-entry ?\[ "w"))
5511 ;; At this point, the buffer containing the menu exists and is
5512 ;; visible in the current window. So, refresh it.
5513 (with-current-buffer "*Org Export Dispatcher*"
5514 ;; Refresh help. Maintain display continuity by re-visiting
5515 ;; previous window position.
5516 (let ((pos (window-start)))
5517 (erase-buffer)
5518 (insert help)
5519 (set-window-start nil pos)))
5520 (org-fit-window-to-buffer)
5521 (org-export--dispatch-action
5522 standard-prompt allowed-keys backends options first-key expertp))))
5524 (defun org-export--dispatch-action
5525 (prompt allowed-keys backends options first-key expertp)
5526 "Read a character from command input and act accordingly.
5528 PROMPT is the displayed prompt, as a string. ALLOWED-KEYS is
5529 a list of characters available at a given step in the process.
5530 BACKENDS is a list of menu entries. OPTIONS, FIRST-KEY and
5531 EXPERTP are the same as defined in `org-export--dispatch-ui',
5532 which see.
5534 Toggle export options when required. Otherwise, return value is
5535 a list with action as CAR and a list of interactive export
5536 options as CDR."
5537 (let (key)
5538 ;; Scrolling: when in non-expert mode, act on motion keys (C-n,
5539 ;; C-p, SPC, DEL).
5540 (while (and (setq key (read-char-exclusive prompt))
5541 (not expertp)
5542 (memq key '(14 16 ?\s ?\d)))
5543 (case key
5544 (14 (if (not (pos-visible-in-window-p (point-max)))
5545 (ignore-errors (scroll-up-line))
5546 (message "End of buffer")
5547 (sit-for 1)))
5548 (16 (if (not (pos-visible-in-window-p (point-min)))
5549 (ignore-errors (scroll-down-line))
5550 (message "Beginning of buffer")
5551 (sit-for 1)))
5552 (?\s (if (not (pos-visible-in-window-p (point-max)))
5553 (scroll-up nil)
5554 (message "End of buffer")
5555 (sit-for 1)))
5556 (?\d (if (not (pos-visible-in-window-p (point-min)))
5557 (scroll-down nil)
5558 (message "Beginning of buffer")
5559 (sit-for 1)))))
5560 (cond
5561 ;; Ignore undefined associations.
5562 ((not (memq key allowed-keys))
5563 (ding)
5564 (unless expertp (message "Invalid key") (sit-for 1))
5565 (org-export--dispatch-ui options first-key expertp))
5566 ;; q key at first level aborts export. At second
5567 ;; level, cancel first key instead.
5568 ((eq key ?q) (if (not first-key) (error "Export aborted")
5569 (org-export--dispatch-ui options nil expertp)))
5570 ;; Help key: Switch back to standard interface if
5571 ;; expert UI was active.
5572 ((eq key ??) (org-export--dispatch-ui options first-key nil))
5573 ;; Switch to asynchronous export stack.
5574 ((eq key ?&) '(stack))
5575 ;; Toggle export options
5576 ;; C-b (2) C-v (22) C-s (19) C-f (6) C-a (1)
5577 ((memq key '(2 22 19 6 1))
5578 (org-export--dispatch-ui
5579 (let ((option (case key (2 'body) (22 'visible) (19 'subtree)
5580 (6 'force) (1 'async))))
5581 (if (memq option options) (remq option options)
5582 (cons option options)))
5583 first-key expertp))
5584 ;; Action selected: Send key and options back to
5585 ;; `org-export-dispatch'.
5586 ((or first-key (functionp (nth 2 (assq key backends))))
5587 (cons (cond
5588 ((not first-key) (nth 2 (assq key backends)))
5589 ;; Publishing actions are hard-coded. Send a special
5590 ;; signal to `org-export-dispatch'.
5591 ((eq first-key ?P)
5592 (case key
5593 (?f 'publish-current-file)
5594 (?p 'publish-current-project)
5595 (?x 'publish-choose-project)
5596 (?a 'publish-all)))
5597 ;; Return first action associated to FIRST-KEY + KEY
5598 ;; path. Indeed, derived backends can share the same
5599 ;; FIRST-KEY.
5600 (t (catch 'found
5601 (mapc (lambda (backend)
5602 (let ((match (assq key (nth 2 backend))))
5603 (when match (throw 'found (nth 2 match)))))
5604 (member (assq first-key backends) backends)))))
5605 options))
5606 ;; Otherwise, enter sub-menu.
5607 (t (org-export--dispatch-ui options key expertp)))))
5611 (provide 'ox)
5613 ;; Local variables:
5614 ;; generated-autoload-file: "org-loaddefs.el"
5615 ;; End:
5617 ;;; ox.el ends here