mirror of
https://gitlab.com/scemama/QCaml.git
synced 2024-11-14 10:03:39 +01:00
1883 lines
74 KiB
EmacsLisp
1883 lines
74 KiB
EmacsLisp
|
;;; htmlize.el --- Convert buffer text and decorations to HTML. -*- lexical-binding: t -*-
|
|||
|
|
|
|||
|
|
;; Copyright (C) 1997-2003,2005,2006,2009,2011,2012,2014,2017,2018 Hrvoje Niksic
|
|||
|
|
|
|||
|
|
;; Author: Hrvoje Niksic <hniksic@gmail.com>
|
|||
|
|
;; Homepage: https://github.com/hniksic/emacs-htmlize
|
|||
|
|
;; Keywords: hypermedia, extensions
|
|||
|
|
;; Version: 1.56
|
|||
|
|
|
|||
|
|
;; This program is free software; you can redistribute it and/or modify
|
|||
|
|
;; it under the terms of the GNU General Public License as published by
|
|||
|
|
;; the Free Software Foundation; either version 2, or (at your option)
|
|||
|
|
;; any later version.
|
|||
|
|
|
|||
|
|
;; This program is distributed in the hope that it will be useful,
|
|||
|
|
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|||
|
|
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|||
|
|
;; GNU General Public License for more details.
|
|||
|
|
|
|||
|
|
;; You should have received a copy of the GNU General Public License
|
|||
|
|
;; along with this program; see the file COPYING. If not, write to the
|
|||
|
|
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|||
|
|
;; Boston, MA 02111-1307, USA.
|
|||
|
|
|
|||
|
|
;;; Commentary:
|
|||
|
|
|
|||
|
|
;; This package converts the buffer text and the associated
|
|||
|
|
;; decorations to HTML. Mail to <hniksic@gmail.com> to discuss
|
|||
|
|
;; features and additions. All suggestions are more than welcome.
|
|||
|
|
|
|||
|
|
;; To use it, just switch to the buffer you want HTML-ized and type
|
|||
|
|
;; `M-x htmlize-buffer'. You will be switched to a new buffer that
|
|||
|
|
;; contains the resulting HTML code. You can edit and inspect this
|
|||
|
|
;; buffer, or you can just save it with C-x C-w. `M-x htmlize-file'
|
|||
|
|
;; will find a file, fontify it, and save the HTML version in
|
|||
|
|
;; FILE.html, without any additional intervention. `M-x
|
|||
|
|
;; htmlize-many-files' allows you to htmlize any number of files in
|
|||
|
|
;; the same manner. `M-x htmlize-many-files-dired' does the same for
|
|||
|
|
;; files marked in a dired buffer.
|
|||
|
|
|
|||
|
|
;; htmlize supports three types of HTML output, selected by setting
|
|||
|
|
;; `htmlize-output-type': `css', `inline-css', and `font'. In `css'
|
|||
|
|
;; mode, htmlize uses cascading style sheets to specify colors; it
|
|||
|
|
;; generates classes that correspond to Emacs faces and uses <span
|
|||
|
|
;; class=FACE>...</span> to color parts of text. In this mode, the
|
|||
|
|
;; produced HTML is valid under the 4.01 strict DTD, as confirmed by
|
|||
|
|
;; the W3C validator. `inline-css' is like `css', except the CSS is
|
|||
|
|
;; put directly in the STYLE attribute of the SPAN element, making it
|
|||
|
|
;; possible to paste the generated HTML into existing HTML documents.
|
|||
|
|
;; In `font' mode, htmlize uses <font color="...">...</font> to
|
|||
|
|
;; colorize HTML, which is not standard-compliant, but works better in
|
|||
|
|
;; older browsers. `css' mode is the default.
|
|||
|
|
|
|||
|
|
;; You can also use htmlize from your Emacs Lisp code. When called
|
|||
|
|
;; non-interactively, `htmlize-buffer' and `htmlize-region' will
|
|||
|
|
;; return the resulting HTML buffer, but will not change current
|
|||
|
|
;; buffer or move the point. htmlize will do its best to work on
|
|||
|
|
;; non-windowing Emacs sessions but the result will be limited to
|
|||
|
|
;; colors supported by the terminal.
|
|||
|
|
|
|||
|
|
;; htmlize aims for compatibility with older Emacs versions. Please
|
|||
|
|
;; let me know if it doesn't work on the version of GNU Emacs that you
|
|||
|
|
;; are using. The package relies on the presence of CL extensions;
|
|||
|
|
;; please don't try to remove that dependency. I see no practical
|
|||
|
|
;; problems with using the full power of the CL extensions, except
|
|||
|
|
;; that one might learn to like them too much.
|
|||
|
|
|
|||
|
|
;; The latest version is available at:
|
|||
|
|
;;
|
|||
|
|
;; <https://github.com/hniksic/emacs-htmlize>
|
|||
|
|
;; <https://code.orgmode.org/mirrors/emacs-htmlize>
|
|||
|
|
;;
|
|||
|
|
|
|||
|
|
;; Thanks go to the many people who have sent reports and contributed
|
|||
|
|
;; comments, suggestions, and fixes. They include Ron Gut, Bob
|
|||
|
|
;; Weiner, Toni Drabik, Peter Breton, Ville Skytta, Thomas Vogels,
|
|||
|
|
;; Juri Linkov, Maciek Pasternacki, and many others.
|
|||
|
|
|
|||
|
|
;; User quotes: "You sir, are a sick, sick, _sick_ person. :)"
|
|||
|
|
;; -- Bill Perry, author of Emacs/W3
|
|||
|
|
|
|||
|
|
|
|||
|
|
;;; Code:
|
|||
|
|
|
|||
|
|
(require 'cl-lib)
|
|||
|
|
(eval-when-compile
|
|||
|
|
(defvar font-lock-auto-fontify)
|
|||
|
|
(defvar font-lock-support-mode)
|
|||
|
|
(defvar global-font-lock-mode))
|
|||
|
|
|
|||
|
|
(defconst htmlize-version "1.56")
|
|||
|
|
|
|||
|
|
(defgroup htmlize nil
|
|||
|
|
"Convert buffer text and faces to HTML."
|
|||
|
|
:group 'hypermedia)
|
|||
|
|
|
|||
|
|
(defcustom htmlize-head-tags ""
|
|||
|
|
"Additional tags to insert within HEAD of the generated document."
|
|||
|
|
:type 'string
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defcustom htmlize-output-type 'css
|
|||
|
|
"Output type of generated HTML, one of `css', `inline-css', or `font'.
|
|||
|
|
When set to `css' (the default), htmlize will generate a style sheet
|
|||
|
|
with description of faces, and use it in the HTML document, specifying
|
|||
|
|
the faces in the actual text with <span class=\"FACE\">.
|
|||
|
|
|
|||
|
|
When set to `inline-css', the style will be generated as above, but
|
|||
|
|
placed directly in the STYLE attribute of the span ELEMENT: <span
|
|||
|
|
style=\"STYLE\">. This makes it easier to paste the resulting HTML to
|
|||
|
|
other documents.
|
|||
|
|
|
|||
|
|
When set to `font', the properties will be set using layout tags
|
|||
|
|
<font>, <b>, <i>, <u>, and <strike>.
|
|||
|
|
|
|||
|
|
`css' output is normally preferred, but `font' is still useful for
|
|||
|
|
supporting old, pre-CSS browsers, and both `inline-css' and `font' for
|
|||
|
|
easier embedding of colorized text in foreign HTML documents (no style
|
|||
|
|
sheet to carry around)."
|
|||
|
|
:type '(choice (const css) (const inline-css) (const font))
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defcustom htmlize-use-images t
|
|||
|
|
"Whether htmlize generates `img' for images attached to buffer contents."
|
|||
|
|
:type 'boolean
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defcustom htmlize-force-inline-images nil
|
|||
|
|
"Non-nil means generate all images inline using data URLs.
|
|||
|
|
Normally htmlize converts image descriptors with :file properties to
|
|||
|
|
relative URIs, and those with :data properties to data URIs. With this
|
|||
|
|
flag set, the images specified as a file name are loaded into memory and
|
|||
|
|
embedded in the HTML as data URIs."
|
|||
|
|
:type 'boolean
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defcustom htmlize-max-alt-text 100
|
|||
|
|
"Maximum size of text to use as ALT text in images.
|
|||
|
|
|
|||
|
|
Normally when htmlize encounters text covered by the `display' property
|
|||
|
|
that specifies an image, it generates an `alt' attribute containing the
|
|||
|
|
original text. If the text is larger than `htmlize-max-alt-text' characters,
|
|||
|
|
this will not be done."
|
|||
|
|
:type 'integer
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defcustom htmlize-transform-image 'htmlize-default-transform-image
|
|||
|
|
"Function called to modify the image descriptor.
|
|||
|
|
|
|||
|
|
The function is called with the image descriptor found in the buffer and
|
|||
|
|
the text the image is supposed to replace. It should return a (possibly
|
|||
|
|
different) image descriptor property list or a replacement string to use
|
|||
|
|
instead of of the original buffer text.
|
|||
|
|
|
|||
|
|
Returning nil is the same as returning the original text."
|
|||
|
|
:type 'boolean
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defcustom htmlize-generate-hyperlinks t
|
|||
|
|
"Non-nil means auto-generate the links from URLs and mail addresses in buffer.
|
|||
|
|
|
|||
|
|
This is on by default; set it to nil if you don't want htmlize to
|
|||
|
|
autogenerate such links. Note that this option only turns off automatic
|
|||
|
|
search for contents that looks like URLs and converting them to links.
|
|||
|
|
It has no effect on whether htmlize respects the `htmlize-link' property."
|
|||
|
|
:type 'boolean
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defcustom htmlize-hyperlink-style "
|
|||
|
|
a {
|
|||
|
|
color: inherit;
|
|||
|
|
background-color: inherit;
|
|||
|
|
font: inherit;
|
|||
|
|
text-decoration: inherit;
|
|||
|
|
}
|
|||
|
|
a:hover {
|
|||
|
|
text-decoration: underline;
|
|||
|
|
}
|
|||
|
|
"
|
|||
|
|
"The CSS style used for hyperlinks when in CSS mode."
|
|||
|
|
:type 'string
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defcustom htmlize-replace-form-feeds t
|
|||
|
|
"Non-nil means replace form feeds in source code with HTML separators.
|
|||
|
|
Form feeds are the ^L characters at line beginnings that are sometimes
|
|||
|
|
used to separate sections of source code. If this variable is set to
|
|||
|
|
`t', form feed characters are replaced with the <hr> separator. If this
|
|||
|
|
is a string, it specifies the replacement to use. Note that <pre> is
|
|||
|
|
temporarily closed before the separator is inserted, so the default
|
|||
|
|
replacement is effectively \"</pre><hr /><pre>\". If you specify
|
|||
|
|
another replacement, don't forget to close and reopen the <pre> if you
|
|||
|
|
want the output to remain valid HTML.
|
|||
|
|
|
|||
|
|
If you need more elaborate processing, set this to nil and use
|
|||
|
|
htmlize-after-hook."
|
|||
|
|
:type 'boolean
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defcustom htmlize-html-charset nil
|
|||
|
|
"The charset declared by the resulting HTML documents.
|
|||
|
|
When non-nil, causes htmlize to insert the following in the HEAD section
|
|||
|
|
of the generated HTML:
|
|||
|
|
|
|||
|
|
<meta http-equiv=\"Content-Type\" content=\"text/html; charset=CHARSET\">
|
|||
|
|
|
|||
|
|
where CHARSET is the value you've set for htmlize-html-charset. Valid
|
|||
|
|
charsets are defined by MIME and include strings like \"iso-8859-1\",
|
|||
|
|
\"iso-8859-15\", \"utf-8\", etc.
|
|||
|
|
|
|||
|
|
If you are using non-Latin-1 charsets, you might need to set this for
|
|||
|
|
your documents to render correctly. Also, the W3C validator requires
|
|||
|
|
submitted HTML documents to declare a charset. So if you care about
|
|||
|
|
validation, you can use this to prevent the validator from bitching.
|
|||
|
|
|
|||
|
|
Needless to say, if you set this, you should actually make sure that
|
|||
|
|
the buffer is in the encoding you're claiming it is in. (This is
|
|||
|
|
normally achieved by using the correct file coding system for the
|
|||
|
|
buffer.) If you don't understand what that means, you should probably
|
|||
|
|
leave this option in its default setting."
|
|||
|
|
:type '(choice (const :tag "Unset" nil)
|
|||
|
|
string)
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defcustom htmlize-convert-nonascii-to-entities t
|
|||
|
|
"Whether non-ASCII characters should be converted to HTML entities.
|
|||
|
|
|
|||
|
|
When this is non-nil, characters with codes in the 128-255 range will be
|
|||
|
|
considered Latin 1 and rewritten as \"&#CODE;\". Characters with codes
|
|||
|
|
above 255 will be converted to \"&#UCS;\", where UCS denotes the Unicode
|
|||
|
|
code point of the character. If the code point cannot be determined,
|
|||
|
|
the character will be copied unchanged, as would be the case if the
|
|||
|
|
option were nil.
|
|||
|
|
|
|||
|
|
When the option is nil, the non-ASCII characters are copied to HTML
|
|||
|
|
without modification. In that case, the web server and/or the browser
|
|||
|
|
must be set to understand the encoding that was used when saving the
|
|||
|
|
buffer. (You might also want to specify it by setting
|
|||
|
|
`htmlize-html-charset'.)
|
|||
|
|
|
|||
|
|
Note that in an HTML entity \"&#CODE;\", CODE is always a UCS code point,
|
|||
|
|
which has nothing to do with the charset the page is in. For example,
|
|||
|
|
\"©\" *always* refers to the copyright symbol, regardless of charset
|
|||
|
|
specified by the META tag or the charset sent by the HTTP server. In
|
|||
|
|
other words, \"©\" is exactly equivalent to \"©\".
|
|||
|
|
|
|||
|
|
For most people htmlize will work fine with this option left at the
|
|||
|
|
default setting; don't change it unless you know what you're doing."
|
|||
|
|
:type 'sexp
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defcustom htmlize-ignore-face-size 'absolute
|
|||
|
|
"Whether face size should be ignored when generating HTML.
|
|||
|
|
If this is nil, face sizes are used. If set to t, sizes are ignored
|
|||
|
|
If set to `absolute', only absolute size specifications are ignored.
|
|||
|
|
Please note that font sizes only work with CSS-based output types."
|
|||
|
|
:type '(choice (const :tag "Don't ignore" nil)
|
|||
|
|
(const :tag "Ignore all" t)
|
|||
|
|
(const :tag "Ignore absolute" absolute))
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defcustom htmlize-css-name-prefix ""
|
|||
|
|
"The prefix used for CSS names.
|
|||
|
|
The CSS names that htmlize generates from face names are often too
|
|||
|
|
generic for CSS files; for example, `font-lock-type-face' is transformed
|
|||
|
|
to `type'. Use this variable to add a prefix to the generated names.
|
|||
|
|
The string \"htmlize-\" is an example of a reasonable prefix."
|
|||
|
|
:type 'string
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defcustom htmlize-use-rgb-txt t
|
|||
|
|
"Whether `rgb.txt' should be used to convert color names to RGB.
|
|||
|
|
|
|||
|
|
This conversion means determining, for instance, that the color
|
|||
|
|
\"IndianRed\" corresponds to the (205, 92, 92) RGB triple. `rgb.txt'
|
|||
|
|
is the X color database that maps hundreds of color names to such RGB
|
|||
|
|
triples. When this variable is non-nil, `htmlize' uses `rgb.txt' to
|
|||
|
|
look up color names.
|
|||
|
|
|
|||
|
|
If this variable is nil, htmlize queries Emacs for RGB components of
|
|||
|
|
colors using `color-instance-rgb-components' and `color-values'.
|
|||
|
|
This can yield incorrect results on non-true-color displays.
|
|||
|
|
|
|||
|
|
If the `rgb.txt' file is not found (which will be the case if you're
|
|||
|
|
running Emacs on non-X11 systems), this option is ignored."
|
|||
|
|
:type 'boolean
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defvar htmlize-face-overrides nil
|
|||
|
|
"Overrides for face definitions.
|
|||
|
|
|
|||
|
|
Normally face definitions are taken from Emacs settings for fonts
|
|||
|
|
in the current frame. For faces present in this plist, the
|
|||
|
|
definitions will be used instead. Keys in the plist are symbols
|
|||
|
|
naming the face and values are the overriding definitions. For
|
|||
|
|
example:
|
|||
|
|
|
|||
|
|
(setq htmlize-face-overrides
|
|||
|
|
'(font-lock-warning-face \"black\"
|
|||
|
|
font-lock-function-name-face \"red\"
|
|||
|
|
font-lock-comment-face \"blue\"
|
|||
|
|
default (:foreground \"dark-green\" :background \"yellow\")))
|
|||
|
|
|
|||
|
|
This variable can be also be `let' bound when running `htmlize-buffer'.")
|
|||
|
|
|
|||
|
|
(defcustom htmlize-untabify t
|
|||
|
|
"Non-nil means untabify buffer contents during htmlization."
|
|||
|
|
:type 'boolean
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defcustom htmlize-html-major-mode nil
|
|||
|
|
"The mode the newly created HTML buffer will be put in.
|
|||
|
|
Set this to nil if you prefer the default (fundamental) mode."
|
|||
|
|
:type '(radio (const :tag "No mode (fundamental)" nil)
|
|||
|
|
(function-item html-mode)
|
|||
|
|
(function :tag "User-defined major mode"))
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defcustom htmlize-pre-style nil
|
|||
|
|
"When non-nil, `<pre>' tags will be decorated with style
|
|||
|
|
information in `font' and `inline-css' modes. This allows a
|
|||
|
|
consistent background for captures of regions."
|
|||
|
|
:type 'boolean
|
|||
|
|
:group 'htmlize)
|
|||
|
|
|
|||
|
|
(defvar htmlize-before-hook nil
|
|||
|
|
"Hook run before htmlizing a buffer.
|
|||
|
|
The hook functions are run in the source buffer (not the resulting HTML
|
|||
|
|
buffer).")
|
|||
|
|
|
|||
|
|
(defvar htmlize-after-hook nil
|
|||
|
|
"Hook run after htmlizing a buffer.
|
|||
|
|
Unlike `htmlize-before-hook', these functions are run in the generated
|
|||
|
|
HTML buffer. You may use them to modify the outlook of the final HTML
|
|||
|
|
output.")
|
|||
|
|
|
|||
|
|
(defvar htmlize-file-hook nil
|
|||
|
|
"Hook run by `htmlize-file' after htmlizing a file, but before saving it.")
|
|||
|
|
|
|||
|
|
(defvar htmlize-buffer-places)
|
|||
|
|
|
|||
|
|
;;; Some cross-Emacs compatibility.
|
|||
|
|
|
|||
|
|
;; We need a function that efficiently finds the next change of a
|
|||
|
|
;; property regardless of whether the change occurred because of a
|
|||
|
|
;; text property or an extent/overlay.
|
|||
|
|
(defun htmlize-next-change (pos prop &optional limit)
|
|||
|
|
(if prop
|
|||
|
|
(next-single-char-property-change pos prop nil limit)
|
|||
|
|
(next-char-property-change pos limit)))
|
|||
|
|
|
|||
|
|
(defun htmlize-overlay-faces-at (pos)
|
|||
|
|
(delq nil (mapcar (lambda (o) (overlay-get o 'face)) (overlays-at pos))))
|
|||
|
|
|
|||
|
|
(defun htmlize-next-face-change (pos &optional limit)
|
|||
|
|
;; (htmlize-next-change pos 'face limit) would skip over entire
|
|||
|
|
;; overlays that specify the `face' property, even when they
|
|||
|
|
;; contain smaller text properties that also specify `face'.
|
|||
|
|
;; Emacs display engine merges those faces, and so must we.
|
|||
|
|
(or limit
|
|||
|
|
(setq limit (point-max)))
|
|||
|
|
(let ((next-prop (next-single-property-change pos 'face nil limit))
|
|||
|
|
(overlay-faces (htmlize-overlay-faces-at pos)))
|
|||
|
|
(while (progn
|
|||
|
|
(setq pos (next-overlay-change pos))
|
|||
|
|
(and (< pos next-prop)
|
|||
|
|
(equal overlay-faces (htmlize-overlay-faces-at pos)))))
|
|||
|
|
(setq pos (min pos next-prop))
|
|||
|
|
;; Additionally, we include the entire region that specifies the
|
|||
|
|
;; `display' property.
|
|||
|
|
(when (get-char-property pos 'display)
|
|||
|
|
(setq pos (next-single-char-property-change pos 'display nil limit)))
|
|||
|
|
pos))
|
|||
|
|
|
|||
|
|
(defmacro htmlize-lexlet (&rest letforms)
|
|||
|
|
(declare (indent 1) (debug let))
|
|||
|
|
(if (and (boundp 'lexical-binding)
|
|||
|
|
lexical-binding)
|
|||
|
|
`(let ,@letforms)
|
|||
|
|
;; cl extensions have a macro implementing lexical let
|
|||
|
|
`(lexical-let ,@letforms)))
|
|||
|
|
|
|||
|
|
|
|||
|
|
;;; Transformation of buffer text: HTML escapes, untabification, etc.
|
|||
|
|
|
|||
|
|
(defvar htmlize-basic-character-table
|
|||
|
|
;; Map characters in the 0-127 range to either one-character strings
|
|||
|
|
;; or to numeric entities.
|
|||
|
|
(let ((table (make-vector 128 ?\0)))
|
|||
|
|
;; Map characters in the 32-126 range to themselves, others to
|
|||
|
|
;; &#CODE entities;
|
|||
|
|
(dotimes (i 128)
|
|||
|
|
(setf (aref table i) (if (and (>= i 32) (<= i 126))
|
|||
|
|
(char-to-string i)
|
|||
|
|
(format "&#%d;" i))))
|
|||
|
|
;; Set exceptions manually.
|
|||
|
|
(setf
|
|||
|
|
;; Don't escape newline, carriage return, and TAB.
|
|||
|
|
(aref table ?\n) "\n"
|
|||
|
|
(aref table ?\r) "\r"
|
|||
|
|
(aref table ?\t) "\t"
|
|||
|
|
;; Escape &, <, and >.
|
|||
|
|
(aref table ?&) "&"
|
|||
|
|
(aref table ?<) "<"
|
|||
|
|
(aref table ?>) ">"
|
|||
|
|
;; Not escaping '"' buys us a measurable speedup. It's only
|
|||
|
|
;; necessary to quote it for strings used in attribute values,
|
|||
|
|
;; which htmlize doesn't typically do.
|
|||
|
|
;(aref table ?\") """
|
|||
|
|
)
|
|||
|
|
table))
|
|||
|
|
|
|||
|
|
;; A cache of HTML representation of non-ASCII characters. Depending
|
|||
|
|
;; on the setting of `htmlize-convert-nonascii-to-entities', this maps
|
|||
|
|
;; non-ASCII characters to either "&#<code>;" or "<char>" (mapconcat's
|
|||
|
|
;; mapper must always return strings). It's only filled as characters
|
|||
|
|
;; are encountered, so that in a buffer with e.g. French text, it will
|
|||
|
|
;; only ever contain French accented characters as keys. It's cleared
|
|||
|
|
;; on each entry to htmlize-buffer-1 to allow modifications of
|
|||
|
|
;; `htmlize-convert-nonascii-to-entities' to take effect.
|
|||
|
|
(defvar htmlize-extended-character-cache (make-hash-table :test 'eq))
|
|||
|
|
|
|||
|
|
(defun htmlize-protect-string (string)
|
|||
|
|
"HTML-protect string, escaping HTML metacharacters and I18N chars."
|
|||
|
|
;; Only protecting strings that actually contain unsafe or non-ASCII
|
|||
|
|
;; chars removes a lot of unnecessary funcalls and consing.
|
|||
|
|
(if (not (string-match "[^\r\n\t -%'-;=?-~]" string))
|
|||
|
|
string
|
|||
|
|
(mapconcat (lambda (char)
|
|||
|
|
(cond
|
|||
|
|
((< char 128)
|
|||
|
|
;; ASCII: use htmlize-basic-character-table.
|
|||
|
|
(aref htmlize-basic-character-table char))
|
|||
|
|
((gethash char htmlize-extended-character-cache)
|
|||
|
|
;; We've already seen this char; return the cached
|
|||
|
|
;; string.
|
|||
|
|
)
|
|||
|
|
((not htmlize-convert-nonascii-to-entities)
|
|||
|
|
;; If conversion to entities is not desired, always
|
|||
|
|
;; copy the char literally.
|
|||
|
|
(setf (gethash char htmlize-extended-character-cache)
|
|||
|
|
(char-to-string char)))
|
|||
|
|
((< char 256)
|
|||
|
|
;; Latin 1: no need to call encode-char.
|
|||
|
|
(setf (gethash char htmlize-extended-character-cache)
|
|||
|
|
(format "&#%d;" char)))
|
|||
|
|
((encode-char char 'ucs)
|
|||
|
|
;; Must check if encode-char works for CHAR;
|
|||
|
|
;; it fails for Arabic and possibly elsewhere.
|
|||
|
|
(setf (gethash char htmlize-extended-character-cache)
|
|||
|
|
(format "&#%d;" (encode-char char 'ucs))))
|
|||
|
|
(t
|
|||
|
|
;; encode-char doesn't work for this char. Copy it
|
|||
|
|
;; unchanged and hope for the best.
|
|||
|
|
(setf (gethash char htmlize-extended-character-cache)
|
|||
|
|
(char-to-string char)))))
|
|||
|
|
string "")))
|
|||
|
|
|
|||
|
|
(defun htmlize-attr-escape (string)
|
|||
|
|
;; Like htmlize-protect-string, but also escapes double-quoted
|
|||
|
|
;; strings to make it usable in attribute values.
|
|||
|
|
(setq string (htmlize-protect-string string))
|
|||
|
|
(if (not (string-match "\"" string))
|
|||
|
|
string
|
|||
|
|
(mapconcat (lambda (char)
|
|||
|
|
(if (eql char ?\")
|
|||
|
|
"""
|
|||
|
|
(char-to-string char)))
|
|||
|
|
string "")))
|
|||
|
|
|
|||
|
|
(defsubst htmlize-concat (list)
|
|||
|
|
(if (and (consp list) (null (cdr list)))
|
|||
|
|
;; Don't create a new string in the common case where the list only
|
|||
|
|
;; consists of one element.
|
|||
|
|
(car list)
|
|||
|
|
(apply #'concat list)))
|
|||
|
|
|
|||
|
|
(defun htmlize-format-link (linkprops text)
|
|||
|
|
(let ((uri (if (stringp linkprops)
|
|||
|
|
linkprops
|
|||
|
|
(plist-get linkprops :uri)))
|
|||
|
|
(escaped-text (htmlize-protect-string text)))
|
|||
|
|
(if uri
|
|||
|
|
(format "<a href=\"%s\">%s</a>" (htmlize-attr-escape uri) escaped-text)
|
|||
|
|
escaped-text)))
|
|||
|
|
|
|||
|
|
(defun htmlize-escape-or-link (string)
|
|||
|
|
;; Escape STRING and/or add hyperlinks. STRING comes from a
|
|||
|
|
;; `display' property.
|
|||
|
|
(let ((pos 0) (end (length string)) outlist)
|
|||
|
|
(while (< pos end)
|
|||
|
|
(let* ((link (get-char-property pos 'htmlize-link string))
|
|||
|
|
(next-link-change (next-single-property-change
|
|||
|
|
pos 'htmlize-link string end))
|
|||
|
|
(chunk (substring string pos next-link-change)))
|
|||
|
|
(push
|
|||
|
|
(cond (link
|
|||
|
|
(htmlize-format-link link chunk))
|
|||
|
|
((get-char-property 0 'htmlize-literal chunk)
|
|||
|
|
chunk)
|
|||
|
|
(t
|
|||
|
|
(htmlize-protect-string chunk)))
|
|||
|
|
outlist)
|
|||
|
|
(setq pos next-link-change)))
|
|||
|
|
(htmlize-concat (nreverse outlist))))
|
|||
|
|
|
|||
|
|
(defun htmlize-display-prop-to-html (display text)
|
|||
|
|
(let (desc)
|
|||
|
|
(cond ((stringp display)
|
|||
|
|
;; Emacs ignores recursive display properties.
|
|||
|
|
(htmlize-escape-or-link display))
|
|||
|
|
((not (eq (car-safe display) 'image))
|
|||
|
|
(htmlize-protect-string text))
|
|||
|
|
((null (setq desc (funcall htmlize-transform-image
|
|||
|
|
(cdr display) text)))
|
|||
|
|
(htmlize-escape-or-link text))
|
|||
|
|
((stringp desc)
|
|||
|
|
(htmlize-escape-or-link desc))
|
|||
|
|
(t
|
|||
|
|
(htmlize-generate-image desc text)))))
|
|||
|
|
|
|||
|
|
(defun htmlize-string-to-html (string)
|
|||
|
|
;; Convert the string to HTML, including images attached as
|
|||
|
|
;; `display' property and links as `htmlize-link' property. In a
|
|||
|
|
;; string without images or links, this is equivalent to
|
|||
|
|
;; `htmlize-protect-string'.
|
|||
|
|
(let ((pos 0) (end (length string)) outlist)
|
|||
|
|
(while (< pos end)
|
|||
|
|
(let* ((display (get-char-property pos 'display string))
|
|||
|
|
(next-display-change (next-single-property-change
|
|||
|
|
pos 'display string end))
|
|||
|
|
(chunk (substring string pos next-display-change)))
|
|||
|
|
(push
|
|||
|
|
(if display
|
|||
|
|
(htmlize-display-prop-to-html display chunk)
|
|||
|
|
(htmlize-escape-or-link chunk))
|
|||
|
|
outlist)
|
|||
|
|
(setq pos next-display-change)))
|
|||
|
|
(htmlize-concat (nreverse outlist))))
|
|||
|
|
|
|||
|
|
(defun htmlize-default-transform-image (imgprops _text)
|
|||
|
|
"Default transformation of image descriptor to something usable in HTML.
|
|||
|
|
|
|||
|
|
If `htmlize-use-images' is nil, the function always returns nil, meaning
|
|||
|
|
use original text. Otherwise, it tries to find the image for images that
|
|||
|
|
specify a file name. If `htmlize-force-inline-images' is non-nil, it also
|
|||
|
|
converts the :file attribute to :data and returns the modified property
|
|||
|
|
list."
|
|||
|
|
(when htmlize-use-images
|
|||
|
|
(when (plist-get imgprops :file)
|
|||
|
|
(let ((location (plist-get (cdr (find-image (list imgprops))) :file)))
|
|||
|
|
(when location
|
|||
|
|
(setq imgprops (plist-put (cl-copy-list imgprops) :file location)))))
|
|||
|
|
(if htmlize-force-inline-images
|
|||
|
|
(let ((location (plist-get imgprops :file))
|
|||
|
|
data)
|
|||
|
|
(when location
|
|||
|
|
(with-temp-buffer
|
|||
|
|
(condition-case nil
|
|||
|
|
(progn
|
|||
|
|
(insert-file-contents-literally location)
|
|||
|
|
(setq data (buffer-string)))
|
|||
|
|
(error nil))))
|
|||
|
|
;; if successful, return the new plist, otherwise return
|
|||
|
|
;; nil, which will use the original text
|
|||
|
|
(and data
|
|||
|
|
(plist-put (plist-put imgprops :file nil)
|
|||
|
|
:data data)))
|
|||
|
|
imgprops)))
|
|||
|
|
|
|||
|
|
(defun htmlize-alt-text (_imgprops origtext)
|
|||
|
|
(and (/= (length origtext) 0)
|
|||
|
|
(<= (length origtext) htmlize-max-alt-text)
|
|||
|
|
(not (string-match "[\0-\x1f]" origtext))
|
|||
|
|
origtext))
|
|||
|
|
|
|||
|
|
(defun htmlize-generate-image (imgprops origtext)
|
|||
|
|
(let* ((alt-text (htmlize-alt-text imgprops origtext))
|
|||
|
|
(alt-attr (if alt-text
|
|||
|
|
(format " alt=\"%s\"" (htmlize-attr-escape alt-text))
|
|||
|
|
"")))
|
|||
|
|
(cond ((plist-get imgprops :file)
|
|||
|
|
;; Try to find the image in image-load-path
|
|||
|
|
(let* ((found-props (cdr (find-image (list imgprops))))
|
|||
|
|
(file (or (plist-get found-props :file)
|
|||
|
|
(plist-get imgprops :file))))
|
|||
|
|
(format "<img src=\"%s\"%s />"
|
|||
|
|
(htmlize-attr-escape (file-relative-name file))
|
|||
|
|
alt-attr)))
|
|||
|
|
((plist-get imgprops :data)
|
|||
|
|
(format "<img src=\"data:image/%s;base64,%s\"%s />"
|
|||
|
|
(or (plist-get imgprops :type) "")
|
|||
|
|
(base64-encode-string (plist-get imgprops :data))
|
|||
|
|
alt-attr)))))
|
|||
|
|
|
|||
|
|
(defconst htmlize-ellipsis "...")
|
|||
|
|
(put-text-property 0 (length htmlize-ellipsis) 'htmlize-ellipsis t htmlize-ellipsis)
|
|||
|
|
|
|||
|
|
(defun htmlize-match-inv-spec (inv)
|
|||
|
|
(cl-member inv buffer-invisibility-spec
|
|||
|
|
:key (lambda (i)
|
|||
|
|
(if (symbolp i) i (car i)))))
|
|||
|
|
|
|||
|
|
(defun htmlize-decode-invisibility-spec (invisible)
|
|||
|
|
;; Return t, nil, or `ellipsis', depending on how invisible text should be inserted.
|
|||
|
|
|
|||
|
|
(if (not (listp buffer-invisibility-spec))
|
|||
|
|
;; If buffer-invisibility-spec is not a list, then all
|
|||
|
|
;; characters with non-nil `invisible' property are visible.
|
|||
|
|
(not invisible)
|
|||
|
|
|
|||
|
|
;; Otherwise, the value of a non-nil `invisible' property can be:
|
|||
|
|
;; 1. a symbol -- make the text invisible if it matches
|
|||
|
|
;; buffer-invisibility-spec.
|
|||
|
|
;; 2. a list of symbols -- make the text invisible if
|
|||
|
|
;; any symbol in the list matches
|
|||
|
|
;; buffer-invisibility-spec.
|
|||
|
|
;; If the match of buffer-invisibility-spec has a non-nil
|
|||
|
|
;; CDR, replace the invisible text with an ellipsis.
|
|||
|
|
(let ((match (if (symbolp invisible)
|
|||
|
|
(htmlize-match-inv-spec invisible)
|
|||
|
|
(cl-some #'htmlize-match-inv-spec invisible))))
|
|||
|
|
(cond ((null match) t)
|
|||
|
|
((cdr-safe (car match)) 'ellipsis)
|
|||
|
|
(t nil)))))
|
|||
|
|
|
|||
|
|
(defun htmlize-add-before-after-strings (beg end text)
|
|||
|
|
;; Find overlays specifying before-string and after-string in [beg,
|
|||
|
|
;; pos). If any are found, splice them into TEXT and return the new
|
|||
|
|
;; text.
|
|||
|
|
(let (additions)
|
|||
|
|
(dolist (overlay (overlays-in beg end))
|
|||
|
|
(let ((before (overlay-get overlay 'before-string))
|
|||
|
|
(after (overlay-get overlay 'after-string)))
|
|||
|
|
(when after
|
|||
|
|
(push (cons (- (overlay-end overlay) beg)
|
|||
|
|
after)
|
|||
|
|
additions))
|
|||
|
|
(when before
|
|||
|
|
(push (cons (- (overlay-start overlay) beg)
|
|||
|
|
before)
|
|||
|
|
additions))))
|
|||
|
|
(if additions
|
|||
|
|
(let ((textlist nil)
|
|||
|
|
(strpos 0))
|
|||
|
|
(dolist (add (cl-stable-sort additions #'< :key #'car))
|
|||
|
|
(let ((addpos (car add))
|
|||
|
|
(addtext (cdr add)))
|
|||
|
|
(push (substring text strpos addpos) textlist)
|
|||
|
|
(push addtext textlist)
|
|||
|
|
(setq strpos addpos)))
|
|||
|
|
(push (substring text strpos) textlist)
|
|||
|
|
(apply #'concat (nreverse textlist)))
|
|||
|
|
text)))
|
|||
|
|
|
|||
|
|
(defun htmlize-copy-prop (prop beg end string)
|
|||
|
|
;; Copy the specified property from the specified region of the
|
|||
|
|
;; buffer to the target string. We cannot rely on Emacs to copy the
|
|||
|
|
;; property because we want to handle properties coming from both
|
|||
|
|
;; text properties and overlays.
|
|||
|
|
(let ((pos beg))
|
|||
|
|
(while (< pos end)
|
|||
|
|
(let ((value (get-char-property pos prop))
|
|||
|
|
(next-change (htmlize-next-change pos prop end)))
|
|||
|
|
(when value
|
|||
|
|
(put-text-property (- pos beg) (- next-change beg)
|
|||
|
|
prop value string))
|
|||
|
|
(setq pos next-change)))))
|
|||
|
|
|
|||
|
|
(defun htmlize-get-text-with-display (beg end)
|
|||
|
|
;; Like buffer-substring-no-properties, except it copies the
|
|||
|
|
;; `display' property from the buffer, if found.
|
|||
|
|
(let ((text (buffer-substring-no-properties beg end)))
|
|||
|
|
(htmlize-copy-prop 'display beg end text)
|
|||
|
|
(htmlize-copy-prop 'htmlize-link beg end text)
|
|||
|
|
(setq text (htmlize-add-before-after-strings beg end text))
|
|||
|
|
text))
|
|||
|
|
|
|||
|
|
(defun htmlize-buffer-substring-no-invisible (beg end)
|
|||
|
|
;; Like buffer-substring-no-properties, but don't copy invisible
|
|||
|
|
;; parts of the region. Where buffer-substring-no-properties
|
|||
|
|
;; mandates an ellipsis to be shown, htmlize-ellipsis is inserted.
|
|||
|
|
(let ((pos beg)
|
|||
|
|
visible-list invisible show last-show next-change)
|
|||
|
|
;; Iterate over the changes in the `invisible' property and filter
|
|||
|
|
;; out the portions where it's non-nil, i.e. where the text is
|
|||
|
|
;; invisible.
|
|||
|
|
(while (< pos end)
|
|||
|
|
(setq invisible (get-char-property pos 'invisible)
|
|||
|
|
next-change (htmlize-next-change pos 'invisible end)
|
|||
|
|
show (htmlize-decode-invisibility-spec invisible))
|
|||
|
|
(cond ((eq show t)
|
|||
|
|
(push (htmlize-get-text-with-display pos next-change)
|
|||
|
|
visible-list))
|
|||
|
|
((and (eq show 'ellipsis)
|
|||
|
|
(not (eq last-show 'ellipsis))
|
|||
|
|
;; Conflate successive ellipses.
|
|||
|
|
(push htmlize-ellipsis visible-list))))
|
|||
|
|
(setq pos next-change last-show show))
|
|||
|
|
(htmlize-concat (nreverse visible-list))))
|
|||
|
|
|
|||
|
|
(defun htmlize-trim-ellipsis (text)
|
|||
|
|
;; Remove htmlize-ellipses ("...") from the beginning of TEXT if it
|
|||
|
|
;; starts with it. It checks for the special property of the
|
|||
|
|
;; ellipsis so it doesn't work on ordinary text that begins with
|
|||
|
|
;; "...".
|
|||
|
|
(if (get-text-property 0 'htmlize-ellipsis text)
|
|||
|
|
(substring text (length htmlize-ellipsis))
|
|||
|
|
text))
|
|||
|
|
|
|||
|
|
(defconst htmlize-tab-spaces
|
|||
|
|
;; A table of strings with spaces. (aref htmlize-tab-spaces 5) is
|
|||
|
|
;; like (make-string 5 ?\ ), except it doesn't cons.
|
|||
|
|
(let ((v (make-vector 32 nil)))
|
|||
|
|
(dotimes (i (length v))
|
|||
|
|
(setf (aref v i) (make-string i ?\ )))
|
|||
|
|
v))
|
|||
|
|
|
|||
|
|
(defun htmlize-untabify-string (text start-column)
|
|||
|
|
"Untabify TEXT, assuming it starts at START-COLUMN."
|
|||
|
|
(let ((column start-column)
|
|||
|
|
(last-match 0)
|
|||
|
|
(chunk-start 0)
|
|||
|
|
chunks match-pos tab-size)
|
|||
|
|
(while (string-match "[\t\n]" text last-match)
|
|||
|
|
(setq match-pos (match-beginning 0))
|
|||
|
|
(cond ((eq (aref text match-pos) ?\t)
|
|||
|
|
;; Encountered a tab: create a chunk of text followed by
|
|||
|
|
;; the expanded tab.
|
|||
|
|
(push (substring text chunk-start match-pos) chunks)
|
|||
|
|
;; Increase COLUMN by the length of the text we've
|
|||
|
|
;; skipped since last tab or newline. (Encountering
|
|||
|
|
;; newline resets it.)
|
|||
|
|
(cl-incf column (- match-pos last-match))
|
|||
|
|
;; Calculate tab size based on tab-width and COLUMN.
|
|||
|
|
(setq tab-size (- tab-width (% column tab-width)))
|
|||
|
|
;; Expand the tab, carefully recreating the `display'
|
|||
|
|
;; property if one was on the TAB.
|
|||
|
|
(let ((display (get-text-property match-pos 'display text))
|
|||
|
|
(expanded-tab (aref htmlize-tab-spaces tab-size)))
|
|||
|
|
(when display
|
|||
|
|
(put-text-property 0 tab-size 'display display expanded-tab))
|
|||
|
|
(push expanded-tab chunks))
|
|||
|
|
(cl-incf column tab-size)
|
|||
|
|
(setq chunk-start (1+ match-pos)))
|
|||
|
|
(t
|
|||
|
|
;; Reset COLUMN at beginning of line.
|
|||
|
|
(setq column 0)))
|
|||
|
|
(setq last-match (1+ match-pos)))
|
|||
|
|
;; If no chunks have been allocated, it means there have been no
|
|||
|
|
;; tabs to expand. Return TEXT unmodified.
|
|||
|
|
(if (null chunks)
|
|||
|
|
text
|
|||
|
|
(when (< chunk-start (length text))
|
|||
|
|
;; Push the remaining chunk.
|
|||
|
|
(push (substring text chunk-start) chunks))
|
|||
|
|
;; Generate the output from the available chunks.
|
|||
|
|
(htmlize-concat (nreverse chunks)))))
|
|||
|
|
|
|||
|
|
(defun htmlize-extract-text (beg end trailing-ellipsis)
|
|||
|
|
;; Extract buffer text, sans the invisible parts. Then
|
|||
|
|
;; untabify it and escape the HTML metacharacters.
|
|||
|
|
(let ((text (htmlize-buffer-substring-no-invisible beg end)))
|
|||
|
|
(when trailing-ellipsis
|
|||
|
|
(setq text (htmlize-trim-ellipsis text)))
|
|||
|
|
;; If TEXT ends up empty, don't change trailing-ellipsis.
|
|||
|
|
(when (> (length text) 0)
|
|||
|
|
(setq trailing-ellipsis
|
|||
|
|
(get-text-property (1- (length text))
|
|||
|
|
'htmlize-ellipsis text)))
|
|||
|
|
(when htmlize-untabify
|
|||
|
|
(setq text (htmlize-untabify-string text (current-column))))
|
|||
|
|
(setq text (htmlize-string-to-html text))
|
|||
|
|
(cl-values text trailing-ellipsis)))
|
|||
|
|
|
|||
|
|
(defun htmlize-despam-address (string)
|
|||
|
|
"Replace every occurrence of '@' in STRING with %40.
|
|||
|
|
This is used to protect mailto links without modifying their meaning."
|
|||
|
|
;; Suggested by Ville Skytta.
|
|||
|
|
(while (string-match "@" string)
|
|||
|
|
(setq string (replace-match "%40" nil t string)))
|
|||
|
|
string)
|
|||
|
|
|
|||
|
|
(defun htmlize-make-tmp-overlay (beg end props)
|
|||
|
|
(let ((overlay (make-overlay beg end)))
|
|||
|
|
(overlay-put overlay 'htmlize-tmp-overlay t)
|
|||
|
|
(while props
|
|||
|
|
(overlay-put overlay (pop props) (pop props)))
|
|||
|
|
overlay))
|
|||
|
|
|
|||
|
|
(defun htmlize-delete-tmp-overlays ()
|
|||
|
|
(dolist (overlay (overlays-in (point-min) (point-max)))
|
|||
|
|
(when (overlay-get overlay 'htmlize-tmp-overlay)
|
|||
|
|
(delete-overlay overlay))))
|
|||
|
|
|
|||
|
|
(defun htmlize-make-link-overlay (beg end uri)
|
|||
|
|
(htmlize-make-tmp-overlay beg end `(htmlize-link (:uri ,uri))))
|
|||
|
|
|
|||
|
|
(defun htmlize-create-auto-links ()
|
|||
|
|
"Add `htmlize-link' property to all mailto links in the buffer."
|
|||
|
|
(save-excursion
|
|||
|
|
(goto-char (point-min))
|
|||
|
|
(while (re-search-forward
|
|||
|
|
"<\\(\\(mailto:\\)?\\([-=+_.a-zA-Z0-9]+@[-_.a-zA-Z0-9]+\\)\\)>"
|
|||
|
|
nil t)
|
|||
|
|
(let* ((address (match-string 3))
|
|||
|
|
(beg (match-beginning 0)) (end (match-end 0))
|
|||
|
|
(uri (concat "mailto:" (htmlize-despam-address address))))
|
|||
|
|
(htmlize-make-link-overlay beg end uri)))
|
|||
|
|
(goto-char (point-min))
|
|||
|
|
(while (re-search-forward "<\\(\\(URL:\\)?\\([a-zA-Z]+://[^;]+\\)\\)>"
|
|||
|
|
nil t)
|
|||
|
|
(htmlize-make-link-overlay
|
|||
|
|
(match-beginning 0) (match-end 0) (match-string 3)))))
|
|||
|
|
|
|||
|
|
;; Tests for htmlize-create-auto-links:
|
|||
|
|
|
|||
|
|
;; <mailto:hniksic@xemacs.org>
|
|||
|
|
;; <http://fly.srk.fer.hr>
|
|||
|
|
;; <URL:http://www.xemacs.org>
|
|||
|
|
;; <http://www.mail-archive.com/bbdb-info@xemacs.org/>
|
|||
|
|
;; <hniksic@xemacs.org>
|
|||
|
|
;; <xalan-dev-sc.10148567319.hacuhiucknfgmpfnjcpg-john=doe.com@xml.apache.org>
|
|||
|
|
|
|||
|
|
(defun htmlize-shadow-form-feeds ()
|
|||
|
|
(let ((s "\n<hr />"))
|
|||
|
|
(put-text-property 0 (length s) 'htmlize-literal t s)
|
|||
|
|
(let ((disp `(display ,s)))
|
|||
|
|
(while (re-search-forward "\n\^L" nil t)
|
|||
|
|
(let* ((beg (match-beginning 0))
|
|||
|
|
(end (match-end 0))
|
|||
|
|
(form-feed-pos (1+ beg))
|
|||
|
|
;; don't process ^L if invisible or covered by `display'
|
|||
|
|
(show (and (htmlize-decode-invisibility-spec
|
|||
|
|
(get-char-property form-feed-pos 'invisible))
|
|||
|
|
(not (get-char-property form-feed-pos 'display)))))
|
|||
|
|
(when show
|
|||
|
|
(htmlize-make-tmp-overlay beg end disp)))))))
|
|||
|
|
|
|||
|
|
(defun htmlize-defang-local-variables ()
|
|||
|
|
;; Juri Linkov reports that an HTML-ized "Local variables" can lead
|
|||
|
|
;; visiting the HTML to fail with "Local variables list is not
|
|||
|
|
;; properly terminated". He suggested changing the phrase to
|
|||
|
|
;; syntactically equivalent HTML that Emacs doesn't recognize.
|
|||
|
|
(goto-char (point-min))
|
|||
|
|
(while (search-forward "Local Variables:" nil t)
|
|||
|
|
(replace-match "Local Variables:" nil t)))
|
|||
|
|
|
|||
|
|
|
|||
|
|
;;; Color handling.
|
|||
|
|
|
|||
|
|
(defvar htmlize-x-library-search-path
|
|||
|
|
`(,data-directory
|
|||
|
|
"/etc/X11/rgb.txt"
|
|||
|
|
"/usr/share/X11/rgb.txt"
|
|||
|
|
;; the remainder of this list really belongs in a museum
|
|||
|
|
"/usr/X11R6/lib/X11/"
|
|||
|
|
"/usr/X11R5/lib/X11/"
|
|||
|
|
"/usr/lib/X11R6/X11/"
|
|||
|
|
"/usr/lib/X11R5/X11/"
|
|||
|
|
"/usr/local/X11R6/lib/X11/"
|
|||
|
|
"/usr/local/X11R5/lib/X11/"
|
|||
|
|
"/usr/local/lib/X11R6/X11/"
|
|||
|
|
"/usr/local/lib/X11R5/X11/"
|
|||
|
|
"/usr/X11/lib/X11/"
|
|||
|
|
"/usr/lib/X11/"
|
|||
|
|
"/usr/local/lib/X11/"
|
|||
|
|
"/usr/X386/lib/X11/"
|
|||
|
|
"/usr/x386/lib/X11/"
|
|||
|
|
"/usr/XFree86/lib/X11/"
|
|||
|
|
"/usr/unsupported/lib/X11/"
|
|||
|
|
"/usr/athena/lib/X11/"
|
|||
|
|
"/usr/local/x11r5/lib/X11/"
|
|||
|
|
"/usr/lpp/Xamples/lib/X11/"
|
|||
|
|
"/usr/openwin/lib/X11/"
|
|||
|
|
"/usr/openwin/share/lib/X11/"))
|
|||
|
|
|
|||
|
|
(defun htmlize-get-color-rgb-hash (&optional rgb-file)
|
|||
|
|
"Return a hash table mapping X color names to RGB values.
|
|||
|
|
The keys in the hash table are X11 color names, and the values are the
|
|||
|
|
#rrggbb RGB specifications, extracted from `rgb.txt'.
|
|||
|
|
|
|||
|
|
If RGB-FILE is nil, the function will try hard to find a suitable file
|
|||
|
|
in the system directories.
|
|||
|
|
|
|||
|
|
If no rgb.txt file is found, return nil."
|
|||
|
|
(let ((rgb-file (or rgb-file (locate-file
|
|||
|
|
"rgb.txt"
|
|||
|
|
htmlize-x-library-search-path)))
|
|||
|
|
(hash nil))
|
|||
|
|
(when rgb-file
|
|||
|
|
(with-temp-buffer
|
|||
|
|
(insert-file-contents rgb-file)
|
|||
|
|
(setq hash (make-hash-table :test 'equal))
|
|||
|
|
(while (not (eobp))
|
|||
|
|
(cond ((looking-at "^\\s-*\\([!#]\\|$\\)")
|
|||
|
|
;; Skip comments and empty lines.
|
|||
|
|
)
|
|||
|
|
((looking-at
|
|||
|
|
"[ \t]*\\([0-9]+\\)[ \t]+\\([0-9]+\\)[ \t]+\\([0-9]+\\)[ \t]+\\(.*\\)")
|
|||
|
|
(setf (gethash (downcase (match-string 4)) hash)
|
|||
|
|
(format "#%02x%02x%02x"
|
|||
|
|
(string-to-number (match-string 1))
|
|||
|
|
(string-to-number (match-string 2))
|
|||
|
|
(string-to-number (match-string 3)))))
|
|||
|
|
(t
|
|||
|
|
(error
|
|||
|
|
"Unrecognized line in %s: %s"
|
|||
|
|
rgb-file
|
|||
|
|
(buffer-substring (point) (progn (end-of-line) (point))))))
|
|||
|
|
(forward-line 1))))
|
|||
|
|
hash))
|
|||
|
|
|
|||
|
|
;; Compile the RGB map when loaded. On systems where rgb.txt is
|
|||
|
|
;; missing, the value of the variable will be nil, and rgb.txt will
|
|||
|
|
;; not be used.
|
|||
|
|
(defvar htmlize-color-rgb-hash (htmlize-get-color-rgb-hash))
|
|||
|
|
|
|||
|
|
;;; Face handling.
|
|||
|
|
|
|||
|
|
(defun htmlize-face-color-internal (face fg)
|
|||
|
|
;; Used only under GNU Emacs. Return the color of FACE, but don't
|
|||
|
|
;; return "unspecified-fg" or "unspecified-bg". If the face is
|
|||
|
|
;; `default' and the color is unspecified, look up the color in
|
|||
|
|
;; frame parameters.
|
|||
|
|
(let* ((function (if fg #'face-foreground #'face-background))
|
|||
|
|
(color (funcall function face nil t)))
|
|||
|
|
(when (and (eq face 'default) (null color))
|
|||
|
|
(setq color (cdr (assq (if fg 'foreground-color 'background-color)
|
|||
|
|
(frame-parameters)))))
|
|||
|
|
(when (or (eq color 'unspecified)
|
|||
|
|
(equal color "unspecified-fg")
|
|||
|
|
(equal color "unspecified-bg"))
|
|||
|
|
(setq color nil))
|
|||
|
|
(when (and (eq face 'default)
|
|||
|
|
(null color))
|
|||
|
|
;; Assuming black on white doesn't seem right, but I can't think
|
|||
|
|
;; of anything better to do.
|
|||
|
|
(setq color (if fg "black" "white")))
|
|||
|
|
color))
|
|||
|
|
|
|||
|
|
(defun htmlize-face-foreground (face)
|
|||
|
|
;; Return the name of the foreground color of FACE. If FACE does
|
|||
|
|
;; not specify a foreground color, return nil.
|
|||
|
|
(htmlize-face-color-internal face t))
|
|||
|
|
|
|||
|
|
(defun htmlize-face-background (face)
|
|||
|
|
;; Return the name of the background color of FACE. If FACE does
|
|||
|
|
;; not specify a background color, return nil.
|
|||
|
|
;; GNU Emacs.
|
|||
|
|
(htmlize-face-color-internal face nil))
|
|||
|
|
|
|||
|
|
;; Convert COLOR to the #RRGGBB string. If COLOR is already in that
|
|||
|
|
;; format, it's left unchanged.
|
|||
|
|
|
|||
|
|
(defun htmlize-color-to-rgb (color)
|
|||
|
|
(let ((rgb-string nil))
|
|||
|
|
(cond ((null color)
|
|||
|
|
;; Ignore nil COLOR because it means that the face is not
|
|||
|
|
;; specifying any color. Hence (htmlize-color-to-rgb nil)
|
|||
|
|
;; returns nil.
|
|||
|
|
)
|
|||
|
|
((string-match "\\`#" color)
|
|||
|
|
;; The color is already in #rrggbb format.
|
|||
|
|
(setq rgb-string color))
|
|||
|
|
((and htmlize-use-rgb-txt
|
|||
|
|
htmlize-color-rgb-hash)
|
|||
|
|
;; Use of rgb.txt is requested, and it's available on the
|
|||
|
|
;; system. Use it.
|
|||
|
|
(setq rgb-string (gethash (downcase color) htmlize-color-rgb-hash)))
|
|||
|
|
(t
|
|||
|
|
;; We're getting the RGB components from Emacs.
|
|||
|
|
(let ((rgb (mapcar (lambda (arg)
|
|||
|
|
(/ arg 256))
|
|||
|
|
(color-values color))))
|
|||
|
|
(when rgb
|
|||
|
|
(setq rgb-string (apply #'format "#%02x%02x%02x" rgb))))))
|
|||
|
|
;; If RGB-STRING is still nil, it means the color cannot be found,
|
|||
|
|
;; for whatever reason. In that case just punt and return COLOR.
|
|||
|
|
;; Most browsers support a decent set of color names anyway.
|
|||
|
|
(or rgb-string color)))
|
|||
|
|
|
|||
|
|
;; We store the face properties we care about into an
|
|||
|
|
;; `htmlize-fstruct' type. That way we only have to analyze face
|
|||
|
|
;; properties, which can be time consuming, once per each face. The
|
|||
|
|
;; mapping between Emacs faces and htmlize-fstructs is established by
|
|||
|
|
;; htmlize-make-face-map. The name "fstruct" refers to variables of
|
|||
|
|
;; type `htmlize-fstruct', while the term "face" is reserved for Emacs
|
|||
|
|
;; faces.
|
|||
|
|
|
|||
|
|
(cl-defstruct htmlize-fstruct
|
|||
|
|
foreground ; foreground color, #rrggbb
|
|||
|
|
background ; background color, #rrggbb
|
|||
|
|
size ; size
|
|||
|
|
boldp ; whether face is bold
|
|||
|
|
italicp ; whether face is italic
|
|||
|
|
underlinep ; whether face is underlined
|
|||
|
|
overlinep ; whether face is overlined
|
|||
|
|
strikep ; whether face is struck through
|
|||
|
|
css-name ; CSS name of face
|
|||
|
|
)
|
|||
|
|
|
|||
|
|
(defun htmlize-face-set-from-keyword-attr (fstruct attr value)
|
|||
|
|
;; For ATTR and VALUE, set the equivalent value in FSTRUCT.
|
|||
|
|
(cl-case attr
|
|||
|
|
(:foreground
|
|||
|
|
(setf (htmlize-fstruct-foreground fstruct) (htmlize-color-to-rgb value)))
|
|||
|
|
(:background
|
|||
|
|
(setf (htmlize-fstruct-background fstruct) (htmlize-color-to-rgb value)))
|
|||
|
|
(:height
|
|||
|
|
(setf (htmlize-fstruct-size fstruct) value))
|
|||
|
|
(:weight
|
|||
|
|
(when (string-match (symbol-name value) "bold")
|
|||
|
|
(setf (htmlize-fstruct-boldp fstruct) t)))
|
|||
|
|
(:slant
|
|||
|
|
(setf (htmlize-fstruct-italicp fstruct) (or (eq value 'italic)
|
|||
|
|
(eq value 'oblique))))
|
|||
|
|
(:bold
|
|||
|
|
(setf (htmlize-fstruct-boldp fstruct) value))
|
|||
|
|
(:italic
|
|||
|
|
(setf (htmlize-fstruct-italicp fstruct) value))
|
|||
|
|
(:underline
|
|||
|
|
(setf (htmlize-fstruct-underlinep fstruct) value))
|
|||
|
|
(:overline
|
|||
|
|
(setf (htmlize-fstruct-overlinep fstruct) value))
|
|||
|
|
(:strike-through
|
|||
|
|
(setf (htmlize-fstruct-strikep fstruct) value))))
|
|||
|
|
|
|||
|
|
(defun htmlize-face-size (face)
|
|||
|
|
;; The size (height) of FACE, taking inheritance into account.
|
|||
|
|
;; Only works in Emacs 21 and later.
|
|||
|
|
(let* ((face-list (list face))
|
|||
|
|
(head face-list)
|
|||
|
|
(tail face-list))
|
|||
|
|
(while head
|
|||
|
|
(let ((inherit (face-attribute (car head) :inherit)))
|
|||
|
|
(cond ((listp inherit)
|
|||
|
|
(setcdr tail (cl-copy-list inherit))
|
|||
|
|
(setq tail (last tail)))
|
|||
|
|
((eq inherit 'unspecified))
|
|||
|
|
(t
|
|||
|
|
(setcdr tail (list inherit))
|
|||
|
|
(setq tail (cdr tail)))))
|
|||
|
|
(pop head))
|
|||
|
|
(let ((size-list
|
|||
|
|
(cl-loop
|
|||
|
|
for f in face-list
|
|||
|
|
for h = (face-attribute f :height)
|
|||
|
|
collect (if (eq h 'unspecified) nil h))))
|
|||
|
|
(cl-reduce 'htmlize-merge-size (cons nil size-list)))))
|
|||
|
|
|
|||
|
|
(defun htmlize-face-css-name (face)
|
|||
|
|
;; Generate the css-name property for the given face. Emacs places
|
|||
|
|
;; no restrictions on the names of symbols that represent faces --
|
|||
|
|
;; any characters may be in the name, even control chars. We try
|
|||
|
|
;; hard to beat the face name into shape, both esthetically and
|
|||
|
|
;; according to CSS1 specs.
|
|||
|
|
(let ((name (downcase (symbol-name face))))
|
|||
|
|
(when (string-match "\\`font-lock-" name)
|
|||
|
|
;; font-lock-FOO-face -> FOO.
|
|||
|
|
(setq name (replace-match "" t t name)))
|
|||
|
|
(when (string-match "-face\\'" name)
|
|||
|
|
;; Drop the redundant "-face" suffix.
|
|||
|
|
(setq name (replace-match "" t t name)))
|
|||
|
|
(while (string-match "[^-a-zA-Z0-9]" name)
|
|||
|
|
;; Drop the non-alphanumerics.
|
|||
|
|
(setq name (replace-match "X" t t name)))
|
|||
|
|
(when (string-match "\\`[-0-9]" name)
|
|||
|
|
;; CSS identifiers may not start with a digit.
|
|||
|
|
(setq name (concat "X" name)))
|
|||
|
|
;; After these transformations, the face could come out empty.
|
|||
|
|
(when (equal name "")
|
|||
|
|
(setq name "face"))
|
|||
|
|
;; Apply the prefix.
|
|||
|
|
(concat htmlize-css-name-prefix name)))
|
|||
|
|
|
|||
|
|
(defun htmlize-face-to-fstruct-1 (face)
|
|||
|
|
"Convert Emacs face FACE to fstruct, internal."
|
|||
|
|
(let ((fstruct (make-htmlize-fstruct
|
|||
|
|
:foreground (htmlize-color-to-rgb
|
|||
|
|
(htmlize-face-foreground face))
|
|||
|
|
:background (htmlize-color-to-rgb
|
|||
|
|
(htmlize-face-background face)))))
|
|||
|
|
;; GNU Emacs
|
|||
|
|
(dolist (attr '(:weight :slant :underline :overline :strike-through))
|
|||
|
|
(let ((value (face-attribute face attr nil t)))
|
|||
|
|
(when (and value (not (eq value 'unspecified)))
|
|||
|
|
(htmlize-face-set-from-keyword-attr fstruct attr value))))
|
|||
|
|
(let ((size (htmlize-face-size face)))
|
|||
|
|
(unless (eql size 1.0) ; ignore non-spec
|
|||
|
|
(setf (htmlize-fstruct-size fstruct) size)))
|
|||
|
|
(setf (htmlize-fstruct-css-name fstruct) (htmlize-face-css-name face))
|
|||
|
|
fstruct))
|
|||
|
|
|
|||
|
|
(defun htmlize-face-to-fstruct (face)
|
|||
|
|
(let* ((face-list (or (and (symbolp face)
|
|||
|
|
(cdr (assq face face-remapping-alist)))
|
|||
|
|
(list face)))
|
|||
|
|
(fstruct (htmlize-merge-faces
|
|||
|
|
(mapcar (lambda (face)
|
|||
|
|
(if (symbolp face)
|
|||
|
|
(or (htmlize-get-override-fstruct face)
|
|||
|
|
(htmlize-face-to-fstruct-1 face))
|
|||
|
|
(htmlize-attrlist-to-fstruct face)))
|
|||
|
|
(nreverse face-list)))))
|
|||
|
|
(when (symbolp face)
|
|||
|
|
(setf (htmlize-fstruct-css-name fstruct) (htmlize-face-css-name face)))
|
|||
|
|
fstruct))
|
|||
|
|
|
|||
|
|
(defmacro htmlize-copy-attr-if-set (attr-list dest source)
|
|||
|
|
;; Generate code with the following pattern:
|
|||
|
|
;; (progn
|
|||
|
|
;; (when (htmlize-fstruct-ATTR source)
|
|||
|
|
;; (setf (htmlize-fstruct-ATTR dest) (htmlize-fstruct-ATTR source)))
|
|||
|
|
;; ...)
|
|||
|
|
;; for the given list of boolean attributes.
|
|||
|
|
(cons 'progn
|
|||
|
|
(cl-loop for attr in attr-list
|
|||
|
|
for attr-sym = (intern (format "htmlize-fstruct-%s" attr))
|
|||
|
|
collect `(when (,attr-sym ,source)
|
|||
|
|
(setf (,attr-sym ,dest) (,attr-sym ,source))))))
|
|||
|
|
|
|||
|
|
(defun htmlize-merge-size (merged next)
|
|||
|
|
;; Calculate the size of the merge of MERGED and NEXT.
|
|||
|
|
(cond ((null merged) next)
|
|||
|
|
((integerp next) next)
|
|||
|
|
((null next) merged)
|
|||
|
|
((floatp merged) (* merged next))
|
|||
|
|
((integerp merged) (round (* merged next)))))
|
|||
|
|
|
|||
|
|
(defun htmlize-merge-two-faces (merged next)
|
|||
|
|
(htmlize-copy-attr-if-set
|
|||
|
|
(foreground background boldp italicp underlinep overlinep strikep)
|
|||
|
|
merged next)
|
|||
|
|
(setf (htmlize-fstruct-size merged)
|
|||
|
|
(htmlize-merge-size (htmlize-fstruct-size merged)
|
|||
|
|
(htmlize-fstruct-size next)))
|
|||
|
|
merged)
|
|||
|
|
|
|||
|
|
(defun htmlize-merge-faces (fstruct-list)
|
|||
|
|
(cond ((null fstruct-list)
|
|||
|
|
;; Nothing to do, return a dummy face.
|
|||
|
|
(make-htmlize-fstruct))
|
|||
|
|
((null (cdr fstruct-list))
|
|||
|
|
;; Optimize for the common case of a single face, simply
|
|||
|
|
;; return it.
|
|||
|
|
(car fstruct-list))
|
|||
|
|
(t
|
|||
|
|
(cl-reduce #'htmlize-merge-two-faces
|
|||
|
|
(cons (make-htmlize-fstruct) fstruct-list)))))
|
|||
|
|
|
|||
|
|
;; GNU Emacs 20+ supports attribute lists in `face' properties. For
|
|||
|
|
;; example, you can use `(:foreground "red" :weight bold)' as an
|
|||
|
|
;; overlay's "face", or you can even use a list of such lists, etc.
|
|||
|
|
;; We call those "attrlists".
|
|||
|
|
;;
|
|||
|
|
;; htmlize supports attrlist by converting them to fstructs, the same
|
|||
|
|
;; as with regular faces.
|
|||
|
|
|
|||
|
|
(defun htmlize-attrlist-to-fstruct (attrlist &optional name)
|
|||
|
|
;; Like htmlize-face-to-fstruct, but accepts an ATTRLIST as input.
|
|||
|
|
(let ((fstruct (make-htmlize-fstruct)))
|
|||
|
|
(cond ((eq (car attrlist) 'foreground-color)
|
|||
|
|
;; ATTRLIST is (foreground-color . COLOR)
|
|||
|
|
(setf (htmlize-fstruct-foreground fstruct)
|
|||
|
|
(htmlize-color-to-rgb (cdr attrlist))))
|
|||
|
|
((eq (car attrlist) 'background-color)
|
|||
|
|
;; ATTRLIST is (background-color . COLOR)
|
|||
|
|
(setf (htmlize-fstruct-background fstruct)
|
|||
|
|
(htmlize-color-to-rgb (cdr attrlist))))
|
|||
|
|
(t
|
|||
|
|
;; ATTRLIST is a plist.
|
|||
|
|
(while attrlist
|
|||
|
|
(let ((attr (pop attrlist))
|
|||
|
|
(value (pop attrlist)))
|
|||
|
|
(when (and value (not (eq value 'unspecified)))
|
|||
|
|
(htmlize-face-set-from-keyword-attr fstruct attr value))))))
|
|||
|
|
(setf (htmlize-fstruct-css-name fstruct) (or name "custom"))
|
|||
|
|
fstruct))
|
|||
|
|
|
|||
|
|
(defun htmlize-decode-face-prop (prop)
|
|||
|
|
"Turn face property PROP into a list of face-like objects."
|
|||
|
|
;; PROP can be a symbol naming a face, a string naming such a
|
|||
|
|
;; symbol, a cons (foreground-color . COLOR) or (background-color
|
|||
|
|
;; COLOR), a property list (:attr1 val1 :attr2 val2 ...), or a list
|
|||
|
|
;; of any of those.
|
|||
|
|
;;
|
|||
|
|
;; (htmlize-decode-face-prop 'face) -> (face)
|
|||
|
|
;; (htmlize-decode-face-prop '(face1 face2)) -> (face1 face2)
|
|||
|
|
;; (htmlize-decode-face-prop '(:attr "val")) -> ((:attr "val"))
|
|||
|
|
;; (htmlize-decode-face-prop '((:attr "val") face (foreground-color "red")))
|
|||
|
|
;; -> ((:attr "val") face (foreground-color "red"))
|
|||
|
|
;;
|
|||
|
|
;; Unrecognized atoms or non-face symbols/strings are silently
|
|||
|
|
;; stripped away.
|
|||
|
|
(cond ((null prop)
|
|||
|
|
nil)
|
|||
|
|
((symbolp prop)
|
|||
|
|
(and (facep prop)
|
|||
|
|
(list prop)))
|
|||
|
|
((stringp prop)
|
|||
|
|
(and (facep (intern-soft prop))
|
|||
|
|
(list prop)))
|
|||
|
|
((atom prop)
|
|||
|
|
nil)
|
|||
|
|
((and (symbolp (car prop))
|
|||
|
|
(eq ?: (aref (symbol-name (car prop)) 0)))
|
|||
|
|
(list prop))
|
|||
|
|
((or (eq (car prop) 'foreground-color)
|
|||
|
|
(eq (car prop) 'background-color))
|
|||
|
|
(list prop))
|
|||
|
|
(t
|
|||
|
|
(apply #'nconc (mapcar #'htmlize-decode-face-prop prop)))))
|
|||
|
|
|
|||
|
|
(defun htmlize-get-override-fstruct (face)
|
|||
|
|
(let* ((raw-def (plist-get htmlize-face-overrides face))
|
|||
|
|
(def (cond ((stringp raw-def) (list :foreground raw-def))
|
|||
|
|
((listp raw-def) raw-def)
|
|||
|
|
(t
|
|||
|
|
(error (format (concat "face override must be an "
|
|||
|
|
"attribute list or string, got %s")
|
|||
|
|
raw-def))))))
|
|||
|
|
(and def
|
|||
|
|
(htmlize-attrlist-to-fstruct def (symbol-name face)))))
|
|||
|
|
|
|||
|
|
(defun htmlize-make-face-map (faces)
|
|||
|
|
;; Return a hash table mapping Emacs faces to htmlize's fstructs.
|
|||
|
|
;; The keys are either face symbols or attrlists, so the test
|
|||
|
|
;; function must be `equal'.
|
|||
|
|
(let ((face-map (make-hash-table :test 'equal))
|
|||
|
|
css-names)
|
|||
|
|
(dolist (face faces)
|
|||
|
|
(unless (gethash face face-map)
|
|||
|
|
;; Haven't seen FACE yet; convert it to an fstruct and cache
|
|||
|
|
;; it.
|
|||
|
|
(let ((fstruct (htmlize-face-to-fstruct face)))
|
|||
|
|
(setf (gethash face face-map) fstruct)
|
|||
|
|
(let* ((css-name (htmlize-fstruct-css-name fstruct))
|
|||
|
|
(new-name css-name)
|
|||
|
|
(i 0))
|
|||
|
|
;; Uniquify the face's css-name by using NAME-1, NAME-2,
|
|||
|
|
;; etc.
|
|||
|
|
(while (member new-name css-names)
|
|||
|
|
(setq new-name (format "%s-%s" css-name (cl-incf i))))
|
|||
|
|
(unless (equal new-name css-name)
|
|||
|
|
(setf (htmlize-fstruct-css-name fstruct) new-name))
|
|||
|
|
(push new-name css-names)))))
|
|||
|
|
face-map))
|
|||
|
|
|
|||
|
|
(defun htmlize-unstringify-face (face)
|
|||
|
|
"If FACE is a string, return it interned, otherwise return it unchanged."
|
|||
|
|
(if (stringp face)
|
|||
|
|
(intern face)
|
|||
|
|
face))
|
|||
|
|
|
|||
|
|
(defun htmlize-faces-in-buffer ()
|
|||
|
|
"Return a list of faces used in the current buffer.
|
|||
|
|
This is the set of faces specified by the `face' text property and by buffer
|
|||
|
|
overlays that specify `face'."
|
|||
|
|
(let (faces)
|
|||
|
|
;; Faces used by text properties.
|
|||
|
|
(let ((pos (point-min)) face-prop next)
|
|||
|
|
(while (< pos (point-max))
|
|||
|
|
(setq face-prop (get-text-property pos 'face)
|
|||
|
|
next (or (next-single-property-change pos 'face) (point-max)))
|
|||
|
|
(setq faces (cl-nunion (htmlize-decode-face-prop face-prop)
|
|||
|
|
faces :test 'equal))
|
|||
|
|
(setq pos next)))
|
|||
|
|
;; Faces used by overlays.
|
|||
|
|
(dolist (overlay (overlays-in (point-min) (point-max)))
|
|||
|
|
(let ((face-prop (overlay-get overlay 'face)))
|
|||
|
|
(setq faces (cl-nunion (htmlize-decode-face-prop face-prop)
|
|||
|
|
faces :test 'equal))))
|
|||
|
|
faces))
|
|||
|
|
|
|||
|
|
(if (>= emacs-major-version 25)
|
|||
|
|
(defun htmlize-sorted-overlays-at (pos)
|
|||
|
|
(overlays-at pos t))
|
|||
|
|
|
|||
|
|
(defun htmlize-sorted-overlays-at (pos)
|
|||
|
|
;; Like OVERLAYS-AT with the SORTED argument, for older Emacsen.
|
|||
|
|
(let ((overlays (overlays-at pos)))
|
|||
|
|
(setq overlays (cl-sort overlays #'<
|
|||
|
|
:key (lambda (o)
|
|||
|
|
(- (overlay-end o) (overlay-start o)))))
|
|||
|
|
(setq overlays
|
|||
|
|
(cl-stable-sort overlays #'<
|
|||
|
|
:key (lambda (o)
|
|||
|
|
(let ((prio (overlay-get o 'priority)))
|
|||
|
|
(if (numberp prio) prio 0)))))
|
|||
|
|
(nreverse overlays))))
|
|||
|
|
|
|||
|
|
|
|||
|
|
;; htmlize-faces-at-point returns the faces in use at point. The
|
|||
|
|
;; faces are sorted by increasing priority, i.e. the last face takes
|
|||
|
|
;; precedence.
|
|||
|
|
;;
|
|||
|
|
;; This returns all the faces in the `face' property and all the faces
|
|||
|
|
;; in the overlays at point.
|
|||
|
|
|
|||
|
|
(defun htmlize-faces-at-point ()
|
|||
|
|
(let (all-faces)
|
|||
|
|
;; Faces from text properties.
|
|||
|
|
(let ((face-prop (get-text-property (point) 'face)))
|
|||
|
|
;; we need to reverse the `face' prop because we want
|
|||
|
|
;; more specific faces to come later
|
|||
|
|
(setq all-faces (nreverse (htmlize-decode-face-prop face-prop))))
|
|||
|
|
;; Faces from overlays.
|
|||
|
|
(let ((overlays
|
|||
|
|
;; Collect overlays at point that specify `face'.
|
|||
|
|
(cl-delete-if-not (lambda (o)
|
|||
|
|
(overlay-get o 'face))
|
|||
|
|
(nreverse (htmlize-sorted-overlays-at (point)))))
|
|||
|
|
list face-prop)
|
|||
|
|
(dolist (overlay overlays)
|
|||
|
|
(setq face-prop (overlay-get overlay 'face)
|
|||
|
|
list (nconc (htmlize-decode-face-prop face-prop) list)))
|
|||
|
|
;; Under "Merging Faces" the manual explicitly states
|
|||
|
|
;; that faces specified by overlays take precedence over
|
|||
|
|
;; faces specified by text properties.
|
|||
|
|
(setq all-faces (nconc all-faces list)))
|
|||
|
|
all-faces))
|
|||
|
|
|
|||
|
|
;; htmlize supports generating HTML in several flavors, some of which
|
|||
|
|
;; use CSS, and others the <font> element. We take an OO approach and
|
|||
|
|
;; define "methods" that indirect to the functions that depend on
|
|||
|
|
;; `htmlize-output-type'. The currently used methods are `doctype',
|
|||
|
|
;; `insert-head', `body-tag', `pre-tag', and `text-markup'. Not all
|
|||
|
|
;; output types define all methods.
|
|||
|
|
;;
|
|||
|
|
;; Methods are called either with (htmlize-method METHOD ARGS...)
|
|||
|
|
;; special form, or by accessing the function with
|
|||
|
|
;; (htmlize-method-function 'METHOD) and calling (funcall FUNCTION).
|
|||
|
|
;; The latter form is useful in tight loops because `htmlize-method'
|
|||
|
|
;; conses.
|
|||
|
|
|
|||
|
|
(defmacro htmlize-method (method &rest args)
|
|||
|
|
;; Expand to (htmlize-TYPE-METHOD ...ARGS...). TYPE is the value of
|
|||
|
|
;; `htmlize-output-type' at run time.
|
|||
|
|
`(funcall (htmlize-method-function ',method) ,@args))
|
|||
|
|
|
|||
|
|
(defun htmlize-method-function (method)
|
|||
|
|
;; Return METHOD's function definition for the current output type.
|
|||
|
|
;; The returned object can be safely funcalled.
|
|||
|
|
(let ((sym (intern (format "htmlize-%s-%s" htmlize-output-type method))))
|
|||
|
|
(indirect-function (if (fboundp sym)
|
|||
|
|
sym
|
|||
|
|
(let ((default (intern (concat "htmlize-default-"
|
|||
|
|
(symbol-name method)))))
|
|||
|
|
(if (fboundp default)
|
|||
|
|
default
|
|||
|
|
'ignore))))))
|
|||
|
|
|
|||
|
|
(defvar htmlize-memoization-table (make-hash-table :test 'equal))
|
|||
|
|
|
|||
|
|
(defmacro htmlize-memoize (key generator)
|
|||
|
|
"Return the value of GENERATOR, memoized as KEY.
|
|||
|
|
That means that GENERATOR will be evaluated and returned the first time
|
|||
|
|
it's called with the same value of KEY. All other times, the cached
|
|||
|
|
\(memoized) value will be returned."
|
|||
|
|
(let ((value (cl-gensym)))
|
|||
|
|
`(let ((,value (gethash ,key htmlize-memoization-table)))
|
|||
|
|
(unless ,value
|
|||
|
|
(setq ,value ,generator)
|
|||
|
|
(setf (gethash ,key htmlize-memoization-table) ,value))
|
|||
|
|
,value)))
|
|||
|
|
|
|||
|
|
;;; Default methods.
|
|||
|
|
|
|||
|
|
(defun htmlize-default-doctype ()
|
|||
|
|
nil ; no doc-string
|
|||
|
|
;; Note that the `font' output is technically invalid under this DTD
|
|||
|
|
;; because the DTD doesn't allow embedding <font> in <pre>.
|
|||
|
|
"<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.01//EN\">"
|
|||
|
|
)
|
|||
|
|
|
|||
|
|
(defun htmlize-default-body-tag (face-map)
|
|||
|
|
nil ; no doc-string
|
|||
|
|
face-map ; shut up the byte-compiler
|
|||
|
|
"<body>")
|
|||
|
|
|
|||
|
|
(defun htmlize-default-pre-tag (face-map)
|
|||
|
|
nil ; no doc-string
|
|||
|
|
face-map ; shut up the byte-compiler
|
|||
|
|
"<pre>")
|
|||
|
|
|
|||
|
|
|
|||
|
|
;;; CSS based output support.
|
|||
|
|
|
|||
|
|
;; Internal function; not a method.
|
|||
|
|
(defun htmlize-css-specs (fstruct)
|
|||
|
|
(let (result)
|
|||
|
|
(when (htmlize-fstruct-foreground fstruct)
|
|||
|
|
(push (format "color: %s;" (htmlize-fstruct-foreground fstruct))
|
|||
|
|
result))
|
|||
|
|
(when (htmlize-fstruct-background fstruct)
|
|||
|
|
(push (format "background-color: %s;"
|
|||
|
|
(htmlize-fstruct-background fstruct))
|
|||
|
|
result))
|
|||
|
|
(let ((size (htmlize-fstruct-size fstruct)))
|
|||
|
|
(when (and size (not (eq htmlize-ignore-face-size t)))
|
|||
|
|
(cond ((floatp size)
|
|||
|
|
(push (format "font-size: %d%%;" (* 100 size)) result))
|
|||
|
|
((not (eq htmlize-ignore-face-size 'absolute))
|
|||
|
|
(push (format "font-size: %spt;" (/ size 10.0)) result)))))
|
|||
|
|
(when (htmlize-fstruct-boldp fstruct)
|
|||
|
|
(push "font-weight: bold;" result))
|
|||
|
|
(when (htmlize-fstruct-italicp fstruct)
|
|||
|
|
(push "font-style: italic;" result))
|
|||
|
|
(when (htmlize-fstruct-underlinep fstruct)
|
|||
|
|
(push "text-decoration: underline;" result))
|
|||
|
|
(when (htmlize-fstruct-overlinep fstruct)
|
|||
|
|
(push "text-decoration: overline;" result))
|
|||
|
|
(when (htmlize-fstruct-strikep fstruct)
|
|||
|
|
(push "text-decoration: line-through;" result))
|
|||
|
|
(nreverse result)))
|
|||
|
|
|
|||
|
|
(defun htmlize-css-insert-head (buffer-faces face-map)
|
|||
|
|
(insert " <style type=\"text/css\">\n <!--\n")
|
|||
|
|
(insert " body {\n "
|
|||
|
|
(mapconcat #'identity
|
|||
|
|
(htmlize-css-specs (gethash 'default face-map))
|
|||
|
|
"\n ")
|
|||
|
|
"\n }\n")
|
|||
|
|
(dolist (face (cl-sort (cl-copy-list buffer-faces) #'string-lessp
|
|||
|
|
:key (lambda (f)
|
|||
|
|
(htmlize-fstruct-css-name (gethash f face-map)))))
|
|||
|
|
(let* ((fstruct (gethash face face-map))
|
|||
|
|
(cleaned-up-face-name
|
|||
|
|
(let ((s
|
|||
|
|
;; Use `prin1-to-string' rather than `symbol-name'
|
|||
|
|
;; to get the face name because the "face" can also
|
|||
|
|
;; be an attrlist, which is not a symbol.
|
|||
|
|
(prin1-to-string face)))
|
|||
|
|
;; If the name contains `--' or `*/', remove them.
|
|||
|
|
(while (string-match "--" s)
|
|||
|
|
(setq s (replace-match "-" t t s)))
|
|||
|
|
(while (string-match "\\*/" s)
|
|||
|
|
(setq s (replace-match "XX" t t s)))
|
|||
|
|
s))
|
|||
|
|
(specs (htmlize-css-specs fstruct)))
|
|||
|
|
(insert " ." (htmlize-fstruct-css-name fstruct))
|
|||
|
|
(if (null specs)
|
|||
|
|
(insert " {")
|
|||
|
|
(insert " {\n /* " cleaned-up-face-name " */\n "
|
|||
|
|
(mapconcat #'identity specs "\n ")))
|
|||
|
|
(insert "\n }\n")))
|
|||
|
|
(insert htmlize-hyperlink-style
|
|||
|
|
" -->\n </style>\n"))
|
|||
|
|
|
|||
|
|
(defun htmlize-css-text-markup (fstruct-list buffer)
|
|||
|
|
;; Open the markup needed to insert text colored with FACES into
|
|||
|
|
;; BUFFER. Return the function that closes the markup.
|
|||
|
|
|
|||
|
|
;; In CSS mode, this is easy: just nest the text in one <span
|
|||
|
|
;; class=...> tag for each face in FSTRUCT-LIST.
|
|||
|
|
(dolist (fstruct fstruct-list)
|
|||
|
|
(princ "<span class=\"" buffer)
|
|||
|
|
(princ (htmlize-fstruct-css-name fstruct) buffer)
|
|||
|
|
(princ "\">" buffer))
|
|||
|
|
(htmlize-lexlet ((fstruct-list fstruct-list) (buffer buffer))
|
|||
|
|
(lambda ()
|
|||
|
|
(dolist (fstruct fstruct-list)
|
|||
|
|
(ignore fstruct) ; shut up the byte-compiler
|
|||
|
|
(princ "</span>" buffer)))))
|
|||
|
|
|
|||
|
|
;; `inline-css' output support.
|
|||
|
|
|
|||
|
|
(defun htmlize-inline-css-body-tag (face-map)
|
|||
|
|
(format "<body style=\"%s\">"
|
|||
|
|
(mapconcat #'identity (htmlize-css-specs (gethash 'default face-map))
|
|||
|
|
" ")))
|
|||
|
|
|
|||
|
|
(defun htmlize-inline-css-pre-tag (face-map)
|
|||
|
|
(if htmlize-pre-style
|
|||
|
|
(format "<pre style=\"%s\">"
|
|||
|
|
(mapconcat #'identity (htmlize-css-specs (gethash 'default face-map))
|
|||
|
|
" "))
|
|||
|
|
(format "<pre>")))
|
|||
|
|
|
|||
|
|
(defun htmlize-inline-css-text-markup (fstruct-list buffer)
|
|||
|
|
(let* ((merged (htmlize-merge-faces fstruct-list))
|
|||
|
|
(style (htmlize-memoize
|
|||
|
|
merged
|
|||
|
|
(let ((specs (htmlize-css-specs merged)))
|
|||
|
|
(and specs
|
|||
|
|
(mapconcat #'identity (htmlize-css-specs merged) " "))))))
|
|||
|
|
(when style
|
|||
|
|
(princ "<span style=\"" buffer)
|
|||
|
|
(princ style buffer)
|
|||
|
|
(princ "\">" buffer))
|
|||
|
|
(htmlize-lexlet ((style style) (buffer buffer))
|
|||
|
|
(lambda ()
|
|||
|
|
(when style
|
|||
|
|
(princ "</span>" buffer))))))
|
|||
|
|
|
|||
|
|
;;; `font' tag based output support.
|
|||
|
|
|
|||
|
|
(defun htmlize-font-body-tag (face-map)
|
|||
|
|
(let ((fstruct (gethash 'default face-map)))
|
|||
|
|
(format "<body text=\"%s\" bgcolor=\"%s\">"
|
|||
|
|
(htmlize-fstruct-foreground fstruct)
|
|||
|
|
(htmlize-fstruct-background fstruct))))
|
|||
|
|
|
|||
|
|
(defun htmlize-font-pre-tag (face-map)
|
|||
|
|
(if htmlize-pre-style
|
|||
|
|
(let ((fstruct (gethash 'default face-map)))
|
|||
|
|
(format "<pre text=\"%s\" bgcolor=\"%s\">"
|
|||
|
|
(htmlize-fstruct-foreground fstruct)
|
|||
|
|
(htmlize-fstruct-background fstruct)))
|
|||
|
|
(format "<pre>")))
|
|||
|
|
|
|||
|
|
(defun htmlize-font-text-markup (fstruct-list buffer)
|
|||
|
|
;; In `font' mode, we use the traditional HTML means of altering
|
|||
|
|
;; presentation: <font> tag for colors, <b> for bold, <u> for
|
|||
|
|
;; underline, and <strike> for strike-through.
|
|||
|
|
(let* ((merged (htmlize-merge-faces fstruct-list))
|
|||
|
|
(markup (htmlize-memoize
|
|||
|
|
merged
|
|||
|
|
(cons (concat
|
|||
|
|
(and (htmlize-fstruct-foreground merged)
|
|||
|
|
(format "<font color=\"%s\">" (htmlize-fstruct-foreground merged)))
|
|||
|
|
(and (htmlize-fstruct-boldp merged) "<b>")
|
|||
|
|
(and (htmlize-fstruct-italicp merged) "<i>")
|
|||
|
|
(and (htmlize-fstruct-underlinep merged) "<u>")
|
|||
|
|
(and (htmlize-fstruct-strikep merged) "<strike>"))
|
|||
|
|
(concat
|
|||
|
|
(and (htmlize-fstruct-strikep merged) "</strike>")
|
|||
|
|
(and (htmlize-fstruct-underlinep merged) "</u>")
|
|||
|
|
(and (htmlize-fstruct-italicp merged) "</i>")
|
|||
|
|
(and (htmlize-fstruct-boldp merged) "</b>")
|
|||
|
|
(and (htmlize-fstruct-foreground merged) "</font>"))))))
|
|||
|
|
(princ (car markup) buffer)
|
|||
|
|
(htmlize-lexlet ((markup markup) (buffer buffer))
|
|||
|
|
(lambda ()
|
|||
|
|
(princ (cdr markup) buffer)))))
|
|||
|
|
|
|||
|
|
(defun htmlize-buffer-1 ()
|
|||
|
|
;; Internal function; don't call it from outside this file. Htmlize
|
|||
|
|
;; current buffer, writing the resulting HTML to a new buffer, and
|
|||
|
|
;; return it. Unlike htmlize-buffer, this doesn't change current
|
|||
|
|
;; buffer or use switch-to-buffer.
|
|||
|
|
(save-excursion
|
|||
|
|
;; Protect against the hook changing the current buffer.
|
|||
|
|
(save-excursion
|
|||
|
|
(run-hooks 'htmlize-before-hook))
|
|||
|
|
;; Convince font-lock support modes to fontify the entire buffer
|
|||
|
|
;; in advance.
|
|||
|
|
(htmlize-ensure-fontified)
|
|||
|
|
(clrhash htmlize-extended-character-cache)
|
|||
|
|
(clrhash htmlize-memoization-table)
|
|||
|
|
;; It's important that the new buffer inherits default-directory
|
|||
|
|
;; from the current buffer.
|
|||
|
|
(let ((htmlbuf (generate-new-buffer (if (buffer-file-name)
|
|||
|
|
(htmlize-make-file-name
|
|||
|
|
(file-name-nondirectory
|
|||
|
|
(buffer-file-name)))
|
|||
|
|
"*html*")))
|
|||
|
|
(completed nil))
|
|||
|
|
(unwind-protect
|
|||
|
|
(let* ((buffer-faces (htmlize-faces-in-buffer))
|
|||
|
|
(face-map (htmlize-make-face-map (cl-adjoin 'default buffer-faces)))
|
|||
|
|
(places (cl-gensym))
|
|||
|
|
(title (if (buffer-file-name)
|
|||
|
|
(file-name-nondirectory (buffer-file-name))
|
|||
|
|
(buffer-name))))
|
|||
|
|
(when htmlize-generate-hyperlinks
|
|||
|
|
(htmlize-create-auto-links))
|
|||
|
|
(when htmlize-replace-form-feeds
|
|||
|
|
(htmlize-shadow-form-feeds))
|
|||
|
|
|
|||
|
|
;; Initialize HTMLBUF and insert the HTML prolog.
|
|||
|
|
(with-current-buffer htmlbuf
|
|||
|
|
(buffer-disable-undo)
|
|||
|
|
(insert (htmlize-method doctype) ?\n
|
|||
|
|
(format "<!-- Created by htmlize-%s in %s mode. -->\n"
|
|||
|
|
htmlize-version htmlize-output-type)
|
|||
|
|
"<html>\n ")
|
|||
|
|
(put places 'head-start (point-marker))
|
|||
|
|
(insert "<head>\n"
|
|||
|
|
" <title>" (htmlize-protect-string title) "</title>\n"
|
|||
|
|
(if htmlize-html-charset
|
|||
|
|
(format (concat " <meta http-equiv=\"Content-Type\" "
|
|||
|
|
"content=\"text/html; charset=%s\">\n")
|
|||
|
|
htmlize-html-charset)
|
|||
|
|
"")
|
|||
|
|
htmlize-head-tags)
|
|||
|
|
(htmlize-method insert-head buffer-faces face-map)
|
|||
|
|
(insert " </head>")
|
|||
|
|
(put places 'head-end (point-marker))
|
|||
|
|
(insert "\n ")
|
|||
|
|
(put places 'body-start (point-marker))
|
|||
|
|
(insert (htmlize-method body-tag face-map)
|
|||
|
|
"\n ")
|
|||
|
|
(put places 'content-start (point-marker))
|
|||
|
|
(insert (htmlize-method pre-tag face-map) "\n"))
|
|||
|
|
(let ((text-markup
|
|||
|
|
;; Get the inserter method, so we can funcall it inside
|
|||
|
|
;; the loop. Not calling `htmlize-method' in the loop
|
|||
|
|
;; body yields a measurable speed increase.
|
|||
|
|
(htmlize-method-function 'text-markup))
|
|||
|
|
;; Declare variables used in loop body outside the loop
|
|||
|
|
;; because it's faster to establish `let' bindings only
|
|||
|
|
;; once.
|
|||
|
|
next-change text face-list trailing-ellipsis
|
|||
|
|
fstruct-list last-fstruct-list
|
|||
|
|
(close-markup (lambda ())))
|
|||
|
|
;; This loop traverses and reads the source buffer, appending
|
|||
|
|
;; the resulting HTML to HTMLBUF. This method is fast
|
|||
|
|
;; because: 1) it doesn't require examining the text
|
|||
|
|
;; properties char by char (htmlize-next-face-change is used
|
|||
|
|
;; to move between runs with the same face), and 2) it doesn't
|
|||
|
|
;; require frequent buffer switches, which are slow because
|
|||
|
|
;; they rebind all buffer-local vars.
|
|||
|
|
(goto-char (point-min))
|
|||
|
|
(while (not (eobp))
|
|||
|
|
(setq next-change (htmlize-next-face-change (point)))
|
|||
|
|
;; Get faces in use between (point) and NEXT-CHANGE, and
|
|||
|
|
;; convert them to fstructs.
|
|||
|
|
(setq face-list (htmlize-faces-at-point)
|
|||
|
|
fstruct-list (delq nil (mapcar (lambda (f)
|
|||
|
|
(gethash f face-map))
|
|||
|
|
face-list)))
|
|||
|
|
(cl-multiple-value-setq (text trailing-ellipsis)
|
|||
|
|
(htmlize-extract-text (point) next-change trailing-ellipsis))
|
|||
|
|
;; Don't bother writing anything if there's no text (this
|
|||
|
|
;; happens in invisible regions).
|
|||
|
|
(when (> (length text) 0)
|
|||
|
|
;; Open the new markup if necessary and insert the text.
|
|||
|
|
(when (not (cl-equalp fstruct-list last-fstruct-list))
|
|||
|
|
(funcall close-markup)
|
|||
|
|
(setq last-fstruct-list fstruct-list
|
|||
|
|
close-markup (funcall text-markup fstruct-list htmlbuf)))
|
|||
|
|
(princ text htmlbuf))
|
|||
|
|
(goto-char next-change))
|
|||
|
|
|
|||
|
|
;; We've gone through the buffer; close the markup from
|
|||
|
|
;; the last run, if any.
|
|||
|
|
(funcall close-markup))
|
|||
|
|
|
|||
|
|
;; Insert the epilog and post-process the buffer.
|
|||
|
|
(with-current-buffer htmlbuf
|
|||
|
|
(insert "</pre>")
|
|||
|
|
(put places 'content-end (point-marker))
|
|||
|
|
(insert "\n </body>")
|
|||
|
|
(put places 'body-end (point-marker))
|
|||
|
|
(insert "\n</html>\n")
|
|||
|
|
(htmlize-defang-local-variables)
|
|||
|
|
(goto-char (point-min))
|
|||
|
|
(when htmlize-html-major-mode
|
|||
|
|
;; What sucks about this is that the minor modes, most notably
|
|||
|
|
;; font-lock-mode, won't be initialized. Oh well.
|
|||
|
|
(funcall htmlize-html-major-mode))
|
|||
|
|
(set (make-local-variable 'htmlize-buffer-places)
|
|||
|
|
(symbol-plist places))
|
|||
|
|
(run-hooks 'htmlize-after-hook)
|
|||
|
|
(buffer-enable-undo))
|
|||
|
|
(setq completed t)
|
|||
|
|
htmlbuf)
|
|||
|
|
|
|||
|
|
(when (not completed)
|
|||
|
|
(kill-buffer htmlbuf))
|
|||
|
|
(htmlize-delete-tmp-overlays)))))
|
|||
|
|
|
|||
|
|
;; Utility functions.
|
|||
|
|
|
|||
|
|
(defmacro htmlize-with-fontify-message (&rest body)
|
|||
|
|
;; When forcing fontification of large buffers in
|
|||
|
|
;; htmlize-ensure-fontified, inform the user that he is waiting for
|
|||
|
|
;; font-lock, not for htmlize to finish.
|
|||
|
|
`(progn
|
|||
|
|
(if (> (buffer-size) 65536)
|
|||
|
|
(message "Forcing fontification of %s..."
|
|||
|
|
(buffer-name (current-buffer))))
|
|||
|
|
,@body
|
|||
|
|
(if (> (buffer-size) 65536)
|
|||
|
|
(message "Forcing fontification of %s...done"
|
|||
|
|
(buffer-name (current-buffer))))))
|
|||
|
|
|
|||
|
|
(defun htmlize-ensure-fontified ()
|
|||
|
|
;; If font-lock is being used, ensure that the "support" modes
|
|||
|
|
;; actually fontify the buffer. If font-lock is not in use, we
|
|||
|
|
;; don't care because, except in htmlize-file, we don't force
|
|||
|
|
;; font-lock on the user.
|
|||
|
|
(when font-lock-mode
|
|||
|
|
;; In part taken from ps-print-ensure-fontified in GNU Emacs 21.
|
|||
|
|
(when (and (boundp 'jit-lock-mode)
|
|||
|
|
(symbol-value 'jit-lock-mode))
|
|||
|
|
(htmlize-with-fontify-message
|
|||
|
|
(jit-lock-fontify-now (point-min) (point-max))))
|
|||
|
|
|
|||
|
|
(if (fboundp 'font-lock-ensure)
|
|||
|
|
(font-lock-ensure)
|
|||
|
|
;; Emacs prior to 25.1
|
|||
|
|
(with-no-warnings
|
|||
|
|
(font-lock-mode 1)
|
|||
|
|
(font-lock-fontify-buffer)))))
|
|||
|
|
|
|||
|
|
|
|||
|
|
;;;###autoload
|
|||
|
|
(defun htmlize-buffer (&optional buffer)
|
|||
|
|
"Convert BUFFER to HTML, preserving colors and decorations.
|
|||
|
|
|
|||
|
|
The generated HTML is available in a new buffer, which is returned.
|
|||
|
|
When invoked interactively, the new buffer is selected in the current
|
|||
|
|
window. The title of the generated document will be set to the buffer's
|
|||
|
|
file name or, if that's not available, to the buffer's name.
|
|||
|
|
|
|||
|
|
Note that htmlize doesn't fontify your buffers, it only uses the
|
|||
|
|
decorations that are already present. If you don't set up font-lock or
|
|||
|
|
something else to fontify your buffers, the resulting HTML will be
|
|||
|
|
plain. Likewise, if you don't like the choice of colors, fix the mode
|
|||
|
|
that created them, or simply alter the faces it uses."
|
|||
|
|
(interactive)
|
|||
|
|
(let ((htmlbuf (with-current-buffer (or buffer (current-buffer))
|
|||
|
|
(htmlize-buffer-1))))
|
|||
|
|
(when (interactive-p)
|
|||
|
|
(switch-to-buffer htmlbuf))
|
|||
|
|
htmlbuf))
|
|||
|
|
|
|||
|
|
;;;###autoload
|
|||
|
|
(defun htmlize-region (beg end)
|
|||
|
|
"Convert the region to HTML, preserving colors and decorations.
|
|||
|
|
See `htmlize-buffer' for details."
|
|||
|
|
(interactive "r")
|
|||
|
|
;; Don't let zmacs region highlighting end up in HTML.
|
|||
|
|
(when (fboundp 'zmacs-deactivate-region)
|
|||
|
|
(zmacs-deactivate-region))
|
|||
|
|
(let ((htmlbuf (save-restriction
|
|||
|
|
(narrow-to-region beg end)
|
|||
|
|
(htmlize-buffer-1))))
|
|||
|
|
(when (interactive-p)
|
|||
|
|
(switch-to-buffer htmlbuf))
|
|||
|
|
htmlbuf))
|
|||
|
|
|
|||
|
|
(defun htmlize-region-for-paste (beg end)
|
|||
|
|
"Htmlize the region and return just the HTML as a string.
|
|||
|
|
This forces the `inline-css' style and only returns the HTML body,
|
|||
|
|
but without the BODY tag. This should make it useful for inserting
|
|||
|
|
the text to another HTML buffer."
|
|||
|
|
(let* ((htmlize-output-type 'inline-css)
|
|||
|
|
(htmlbuf (htmlize-region beg end)))
|
|||
|
|
(unwind-protect
|
|||
|
|
(with-current-buffer htmlbuf
|
|||
|
|
(buffer-substring (plist-get htmlize-buffer-places 'content-start)
|
|||
|
|
(plist-get htmlize-buffer-places 'content-end)))
|
|||
|
|
(kill-buffer htmlbuf))))
|
|||
|
|
|
|||
|
|
(defun htmlize-region-save-screenshot (beg end)
|
|||
|
|
"Save the htmlized (see `htmlize-region-for-paste') region in
|
|||
|
|
the kill ring. Uses `inline-css', with style information in
|
|||
|
|
`<pre>' tags, so that the rendering of the marked up text
|
|||
|
|
approximates the buffer as closely as possible."
|
|||
|
|
(interactive "r")
|
|||
|
|
(let ((htmlize-pre-style t))
|
|||
|
|
(kill-new (htmlize-region-for-paste beg end)))
|
|||
|
|
(deactivate-mark))
|
|||
|
|
|
|||
|
|
(defun htmlize-make-file-name (file)
|
|||
|
|
"Make an HTML file name from FILE.
|
|||
|
|
|
|||
|
|
In its default implementation, this simply appends `.html' to FILE.
|
|||
|
|
This function is called by htmlize to create the buffer file name, and
|
|||
|
|
by `htmlize-file' to create the target file name.
|
|||
|
|
|
|||
|
|
More elaborate transformations are conceivable, such as changing FILE's
|
|||
|
|
extension to `.html' (\"file.c\" -> \"file.html\"). If you want them,
|
|||
|
|
overload this function to do it and htmlize will comply."
|
|||
|
|
(concat file ".html"))
|
|||
|
|
|
|||
|
|
;; Older implementation of htmlize-make-file-name that changes FILE's
|
|||
|
|
;; extension to ".html".
|
|||
|
|
;(defun htmlize-make-file-name (file)
|
|||
|
|
; (let ((extension (file-name-extension file))
|
|||
|
|
; (sans-extension (file-name-sans-extension file)))
|
|||
|
|
; (if (or (equal extension "html")
|
|||
|
|
; (equal extension "htm")
|
|||
|
|
; (equal sans-extension ""))
|
|||
|
|
; (concat file ".html")
|
|||
|
|
; (concat sans-extension ".html"))))
|
|||
|
|
|
|||
|
|
;;;###autoload
|
|||
|
|
(defun htmlize-file (file &optional target)
|
|||
|
|
"Load FILE, fontify it, convert it to HTML, and save the result.
|
|||
|
|
|
|||
|
|
Contents of FILE are inserted into a temporary buffer, whose major mode
|
|||
|
|
is set with `normal-mode' as appropriate for the file type. The buffer
|
|||
|
|
is subsequently fontified with `font-lock' and converted to HTML. Note
|
|||
|
|
that, unlike `htmlize-buffer', this function explicitly turns on
|
|||
|
|
font-lock. If a form of highlighting other than font-lock is desired,
|
|||
|
|
please use `htmlize-buffer' directly on buffers so highlighted.
|
|||
|
|
|
|||
|
|
Buffers currently visiting FILE are unaffected by this function. The
|
|||
|
|
function does not change current buffer or move the point.
|
|||
|
|
|
|||
|
|
If TARGET is specified and names a directory, the resulting file will be
|
|||
|
|
saved there instead of to FILE's directory. If TARGET is specified and
|
|||
|
|
does not name a directory, it will be used as output file name."
|
|||
|
|
(interactive (list (read-file-name
|
|||
|
|
"HTML-ize file: "
|
|||
|
|
nil nil nil (and (buffer-file-name)
|
|||
|
|
(file-name-nondirectory
|
|||
|
|
(buffer-file-name))))))
|
|||
|
|
(let ((output-file (if (and target (not (file-directory-p target)))
|
|||
|
|
target
|
|||
|
|
(expand-file-name
|
|||
|
|
(htmlize-make-file-name (file-name-nondirectory file))
|
|||
|
|
(or target (file-name-directory file)))))
|
|||
|
|
;; Try to prevent `find-file-noselect' from triggering
|
|||
|
|
;; font-lock because we'll fontify explicitly below.
|
|||
|
|
(font-lock-mode nil)
|
|||
|
|
(font-lock-auto-fontify nil)
|
|||
|
|
(global-font-lock-mode nil)
|
|||
|
|
;; Ignore the size limit for the purposes of htmlization.
|
|||
|
|
(font-lock-maximum-size nil))
|
|||
|
|
(with-temp-buffer
|
|||
|
|
;; Insert FILE into the temporary buffer.
|
|||
|
|
(insert-file-contents file)
|
|||
|
|
;; Set the file name so normal-mode and htmlize-buffer-1 pick it
|
|||
|
|
;; up. Restore it afterwards so with-temp-buffer's kill-buffer
|
|||
|
|
;; doesn't complain about killing a modified buffer.
|
|||
|
|
(let ((buffer-file-name file))
|
|||
|
|
;; Set the major mode for the sake of font-lock.
|
|||
|
|
(normal-mode)
|
|||
|
|
;; htmlize the buffer and save the HTML.
|
|||
|
|
(with-current-buffer (htmlize-buffer-1)
|
|||
|
|
(unwind-protect
|
|||
|
|
(progn
|
|||
|
|
(run-hooks 'htmlize-file-hook)
|
|||
|
|
(write-region (point-min) (point-max) output-file))
|
|||
|
|
(kill-buffer (current-buffer)))))))
|
|||
|
|
;; I haven't decided on a useful return value yet, so just return
|
|||
|
|
;; nil.
|
|||
|
|
nil)
|
|||
|
|
|
|||
|
|
;;;###autoload
|
|||
|
|
(defun htmlize-many-files (files &optional target-directory)
|
|||
|
|
"Convert FILES to HTML and save the corresponding HTML versions.
|
|||
|
|
|
|||
|
|
FILES should be a list of file names to convert. This function calls
|
|||
|
|
`htmlize-file' on each file; see that function for details. When
|
|||
|
|
invoked interactively, you are prompted for a list of files to convert,
|
|||
|
|
terminated with RET.
|
|||
|
|
|
|||
|
|
If TARGET-DIRECTORY is specified, the HTML files will be saved to that
|
|||
|
|
directory. Normally, each HTML file is saved to the directory of the
|
|||
|
|
corresponding source file."
|
|||
|
|
(interactive
|
|||
|
|
(list
|
|||
|
|
(let (list file)
|
|||
|
|
;; Use empty string as DEFAULT because setting DEFAULT to nil
|
|||
|
|
;; defaults to the directory name, which is not what we want.
|
|||
|
|
(while (not (equal (setq file (read-file-name
|
|||
|
|
"HTML-ize file (RET to finish): "
|
|||
|
|
(and list (file-name-directory
|
|||
|
|
(car list)))
|
|||
|
|
"" t))
|
|||
|
|
""))
|
|||
|
|
(push file list))
|
|||
|
|
(nreverse list))))
|
|||
|
|
;; Verify that TARGET-DIRECTORY is indeed a directory. If it's a
|
|||
|
|
;; file, htmlize-file will use it as target, and that doesn't make
|
|||
|
|
;; sense.
|
|||
|
|
(and target-directory
|
|||
|
|
(not (file-directory-p target-directory))
|
|||
|
|
(error "target-directory must name a directory: %s" target-directory))
|
|||
|
|
(dolist (file files)
|
|||
|
|
(htmlize-file file target-directory)))
|
|||
|
|
|
|||
|
|
;;;###autoload
|
|||
|
|
(defun htmlize-many-files-dired (arg &optional target-directory)
|
|||
|
|
"HTMLize dired-marked files."
|
|||
|
|
(interactive "P")
|
|||
|
|
(htmlize-many-files (dired-get-marked-files nil arg) target-directory))
|
|||
|
|
|
|||
|
|
(provide 'htmlize)
|
|||
|
|
|
|||
|
|
;; Local Variables:
|
|||
|
|
;; byte-compile-warnings: (not unresolved obsolete)
|
|||
|
|
;; End:
|
|||
|
|
|
|||
|
|
;;; htmlize.el ends here
|