kiwix-resources preprocesses all resources rather than only templates. At
this point this doesn't change anything since only (some) template resources
contain KIWIXCACHEID placeholders. But this enhancement opens the door
to the preprocessing of static/skin/index.js (after preprocessing is
able to handle relative links, which comes in the next commit).
The story of search_results.css
static/skin/search_results.css was extracted from
static/templates/no_search_result.html before the latter was dropped.
static/templates/no_search_result.html in turn seems to be a copied and
edited version of static/templates/search_result.html.
In the context of exploratory work on the internationalization of
kiwix-serve (PR #679) I noticed duplication of inline CSS across those
two templates and intended to eliminated it. That goal was not fully
accomplished (static/templates/search_result.html remained untouched)
because by that time PR #679 grew too big and the efforts were diverted
into splitting it into smaller ones. Thus search_results.css slipped
into one of those small PRs, without making much sense because nothing
really justifies preserving custom CSS in the "Fulltext search unavailable"
error page.
At the same time, it served as the only case where a link to a cacheable
resource is generated in C++ code (rather than found in a template).
This poses certain problems to the handling of cache-ids. A workaround
is to expel the URL into a template so that it is processed by
`kiwix-resources`. This commit merely demonstrates that solution. But
whether it should be preserved (or rather the "Fulltext search
unavailable" page should be deprived of CSS) is questionable.
In template resources (found under static/templates), strings of the
form "PATH/TO/STATIC/RESOURCE?KIWIXCACHEID" are expanded into
"PATH/TO/STATIC/RESOURCE?cacheid=CACHEIDVAL" where CACHEIDVAL is a
8-digit hexadecimal hash digest of the file at
static/PATH/TO/STATIC/RESOURCE.
Introduced a new unit-test which will ensure that static resources of
kiwix-serve have the cache ids applied to them in the links embedded into
the HTML code.
At this point there are no cache ids. The new unit-test will help to
visualize how they come into existence.
In the absence of the "userlang" query parameter in the URL, the value
of the "Accept-Language" header is used. However, it is assumed that
"Accept-Language" specifies a single language (rather than a comma
separated list of languages possibly weighted with quality values).
Example:
Accept-Language: fr
// should work
Accept-Language: fr-CH, fr;q=0.9, en;q=0.8, de;q=0.7, *;q=0.5
// The requested language will be considered to be
// "fr-CH, fr;q=0.9, en;q=0.8, de;q=0.7, *;q=0.5".
// The i18n code will fail to find resources for such a language
// and will use the default "en" instead.
At this point a potential issue has been revealed. Now we produce
the final HTML via 2-level template expansion
1. Render parameterized messages
2. Render the HTML template
In which templates we should use double mustache "{{}}" (HTML-escaping)
tags and where we may use triple mustache "{{{}}}" (non-escaping) tags?
Introduced a new resource compiler script kiwix-compile-i18n that
processes i18n string data stored in JSON files and generates sorted C++
tables of string keys and values for all languages.
The "Fulltext search unavailable" error page is now generated using the
static/templates/error.html template. Also added two test cases checking
that error page.
Currently an internal server error can be triggered by accessing an
entry belonging to a redirect loop. The ZIM file (test/data/poor.zim)
containing such a loop was copied from openzim/zim-tools repository
(test/data/zimfiles/poor.zim).
Veloman Yunkan
Matthieu Gautier
Kelson