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Wikipedia EPUBs: re-add ToC in content

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The ToC is no longer in the HTML we get from the
Wikipedia API. So, add it ourselves.
Also, as we can't get anywhere the Wikipedia localized
string for "Contents" (ie. "Sommaire" in French), use
thick <HR> to mark the start and end of this ToC.
This commit is contained in:
poire-z
2023-08-01 10:09:23 +02:00
parent 583ae40e46
commit 08e9c27a32
1 changed files with 70 additions and 0 deletions
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70
frontend/ui/wikipedia.lua
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@@ -945,6 +945,24 @@ hr.koreaderwikifrontpage {
margin-right: 20%;
margin-bottom: 1.2em;
}
/* Have these HR get the same margins and position as our H2 */
hr.koreaderwikitocstart {
page-break-before: always;
font-size: 140%;
margin: 0.7em 30% 1.5em;
height: 0.22em;
border: none;
background-color: black;
}
hr.koreaderwikitocend {
page-break-before: avoid;
page-break-after: always;
font-size: 140%;
margin: 1.2em 30% 0;
height: 0.22em;
border: none;
background-color: black;
}
/* So many links, make them look like normal text except for underline */
a {
@@ -1246,6 +1264,58 @@ table {
]])
epub:add("OEBPS/toc.ncx", table.concat(toc_ncx_parts))
-- ----------------------------------------------------------------
-- HTML table of content
-- We used to have it in the HTML we got from Wikipedia, but we no longer do.
-- So, build it from the 'sections' we got from the API.
local toc_html_parts = {}
-- Unfortunately, we don't and can't get any localized "Contents" or "Sommaire" to use
-- as a heading. So, use some <hr> at start and at end to make this HTML ToC stand out.
table.insert(toc_html_parts, '<hr class="koreaderwikitocstart"/>\n')
cur_level = 0
for isec, s in ipairs(sections) do
-- Some chars in headings are converted to html entities in the
-- wikipedia-generated HTML. We need to do the same in TOC links
-- for the links to be valid.
local s_anchor = s.anchor:gsub("&", "&amp;"):gsub('"', "&quot;"):gsub(">", "&gt;"):gsub("<", "&lt;")
local s_title = string.format("%s %s", s.number, s.line)
local s_level = s.toclevel
if s_level == cur_level then
table.insert(toc_html_parts, "</li>")
elseif s_level < cur_level then
table.insert(toc_html_parts, "</li>")
while cur_level > s_level do
cur_level = cur_level - 1
table.insert(toc_html_parts, "\n"..(" "):rep(cur_level))
table.insert(toc_html_parts, "</ul>")
table.insert(toc_html_parts, "\n"..(" "):rep(cur_level))
table.insert(toc_html_parts, "</li>")
end
else -- s_level > cur_level
while cur_level < s_level do
table.insert(toc_html_parts, "\n"..(" "):rep(cur_level))
table.insert(toc_html_parts, "<ul>")
cur_level = cur_level + 1
end
end
cur_level = s_level
table.insert(toc_html_parts, "\n"..(" "):rep(cur_level))
table.insert(toc_html_parts, string.format([[<li><div><a href="#%s">%s</a></div>]], s_anchor, s_title))
end
-- close nested <ul>
table.insert(toc_html_parts, "</li>")
while cur_level > 0 do
cur_level = cur_level - 1
table.insert(toc_html_parts, "\n"..(" "):rep(cur_level))
table.insert(toc_html_parts, "</ul>")
if cur_level > 0 then
table.insert(toc_html_parts, "\n"..(" "):rep(cur_level))
table.insert(toc_html_parts, "</li>")
end
end
table.insert(toc_html_parts, '<hr class="koreaderwikitocend"/>\n')
html = html:gsub([[<meta property="mw:PageProp/toc" />]], table.concat(toc_html_parts))
-- ----------------------------------------------------------------
-- OEBPS/content.html
-- Some small fixes to Wikipedia HTML to make crengine and the user happier