Re: [O] why prepend "file://" to abs paths in html output?

[Nicolas Goaziou]

Hello,

Kaushal Modi <address@hidden> writes:

> Can you please attach the patch?

Oops. Here it is.


Regards,

-- 
Nicolas Goaziou

>From 6eed5dcd4e585dd32e52571189cf395b1a532310 Mon Sep 17 00:00:00 2001
From: Nicolas Goaziou <address@hidden>
Date: Sun, 9 Jul 2017 12:40:49 +0200
Subject: [PATCH] ox-html: Implement root directory for absolute links

* lisp/ox-html.el (org-html-link-root): New variable.
(org-html-link): Use new variable.
(org-html-publish-to-html): Set root to base directory.
---
 lisp/ox-html.el | 42 +++++++++++++++++++++++++++++++++---------
 1 file changed, 33 insertions(+), 9 deletions(-)

diff --git a/lisp/ox-html.el b/lisp/ox-html.el
index 2ceaf0722..edaec4df7 100644
--- a/lisp/ox-html.el
+++ b/lisp/ox-html.el
@@ -118,6 +118,7 @@
     (:keywords "KEYWORDS" nil nil space)
     (:html-html5-fancy nil "html5-fancy" org-html-html5-fancy)
     (:html-link-use-abs-url nil "html-link-use-abs-url" 
org-html-link-use-abs-url)
+    (:html-link-root "HTML_LINK_ROOT" nil org-html-link-root)
     (:html-link-home "HTML_LINK_HOME" nil org-html-link-home)
     (:html-link-up "HTML_LINK_UP" nil org-html-link-up)
     (:html-mathjax "HTML_MATHJAX" nil "" space)
@@ -1403,6 +1404,18 @@ example."
   :package-version '(Org . "8.1")
   :type 'boolean)
 
+(defcustom org-html-link-root nil
+  "Directory considered as web root.
+When non-nil, all links to absolute file names belonging to this
+directory become root-relative URL.  Otherwise, such links keep
+the \"file:\" scheme."
+  :group 'org-export-html
+  :version "26.1"
+  :package-version '(Org . "9.1")
+  :type '(choice (const :tag "No root directory" nil)
+                (directory :tag "Local web root"))
+  :safe #'string-or-null-p)
+
 (defcustom org-html-home/up-format
   "<div id=\"org-div-home-and-up\">
  <a accesskey=\"h\" href=\"%s\"> UP </a>
@@ -2993,12 +3006,19 @@ INFO is a plist holding contextual information.  See
            (setq raw-path
                  (funcall link-org-files-as-html-maybe raw-path info))
            ;; If file path is absolute, prepend it with protocol
-           ;; component - "file://".
+           ;; component - "file://" or make it a root-relative URL.
            (cond
             ((file-name-absolute-p raw-path)
-             (setq raw-path (org-export-file-uri raw-path)))
+             (let ((root (plist-get info :html-link-root)))
+               (setq raw-path
+                     (if (and root (file-in-directory-p raw-path root))
+                         (concat "/"
+                                 (file-relative-name
+                                  (expand-file-name raw-path)
+                                  root))
+                       (org-export-file-uri raw-path)))))
             ((and home use-abs-url)
-             (setq raw-path (concat (file-name-as-directory home) raw-path))))
+             (setq raw-path (expand-file-name raw-path home))))
            ;; Add search option, if any.  A search option can be
            ;; relative to a custom-id, a headline title, a name or
            ;; a target.
@@ -3762,18 +3782,22 @@ Return output file's name."
 
 ;;;###autoload
 (defun org-html-publish-to-html (plist filename pub-dir)
-  "Publish an org file to HTML.
+  "Publish an Org file to HTML.
 
 FILENAME is the filename of the Org file to be published.  PLIST
 is the property list for the given project.  PUB-DIR is the
 publishing directory.
 
 Return output file name."
-  (org-publish-org-to 'html filename
-                     (concat "." (or (plist-get plist :html-extension)
-                                     org-html-extension
-                                     "html"))
-                     plist pub-dir))
+  (org-publish-org-to
+   'html
+   filename
+   (concat "." (or (plist-get plist :html-extension)
+                  org-html-extension
+                  "html"))
+   (org-combine-plists `(:html-link-root ,(plist-get plist :base-directory))
+                      plist)
+   pub-dir))
 
 
 (provide 'ox-html)
-- 
2.13.2