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%D \module
%D [ file=x-cals,
%D version=2007.09.05,
%D title=\CONTEXT\ XML Modules,
%D subtitle=\CONTEXT\ Structures,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA ADE}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
\writestatus{loading}{ConTeXt XML Macros / Basics}
\startluacode
do
lxml.context = { }
local halignments = {
left = 'l',
flushleft = 'l',
right = 'r',
flushright = 'r',
center = 'c',
middle = 'c',
centre = 'c',
justify = '',
}
local texsprint = tex.sprint
local xmlsprint = xml.sprint
local function roottemplate(root)
local rt = root.at.template
if rt then
if not rt:find("|") then
rt = rt:gsub(",","|")
end
if not rt:find("^|") then rt = "|" .. rt end
if not rt:find("|$") then rt = rt .. "|" end
end
return rt
end
local function specifiedtemplate(root,templatespec)
local template = { }
for r, d, k in xml.elements(root,templatespec) do
local at = d[k].at
local tm = halignments[at.align] or ""
if toboolean(at.paragraph) then
tm = tm .. "p"
end
template[#template+1] = tm
end
if #template > 0 then
return "|" .. table.join(template,"|") .. "|"
else
return nil
end
end
local function autotemplate(root,rowspec,cellspec)
local max = 0
for r, d, k in xml.elements(root,rowspec) do
local n = xml.count(d[k],cellspec)
if n > max then max = n end
end
if max == 2 then
return "|l|p|"
elseif max > 0 then
return "|" .. string.rep("p|",max)
else
return nil
end
end
local defaulttemplate = "|l|p|"
function lxml.context.tabulate(root,namespace)
if not root then
return
else
root = lxml.id(root)
end
local prefix = (namespace or "context") .. ":"
local templatespec = "/" .. prefix .. "template" .. "/" .. prefix .. "column"
local bodyrowspec = "/" .. prefix .. "body" .. "/" .. prefix .. "row"
local cellspec = "/" .. prefix .. "cell"
local template =
roottemplate (root) or
specifiedtemplate (root,templatespec) or
autotemplate (root,bodyrowspec,cellspec) or
defaulttemplate
lxml.directives.before(root,'cdx')
texsprint(tex.ctxcatcodes, "\\bgroup")
lxml.directives.setup(root,'cdx')
-- todo: head and foot
texsprint(tex.ctxcatcodes, string.format("\\starttabulate[%s]",template))
for r, d, k in xml.elements(root,bodyrowspec) do
texsprint(tex.ctxcatcodes, "\\NC ")
for r, d, k in xml.elements(d[k],cellspec) do
texsprint(xml.content(d[k]))
texsprint(tex.ctxcatcodes, "\\NC")
end
texsprint(tex.ctxcatcodes, "\\NR")
end
texsprint(tex.ctxcatcodes, "\\stoptabulate")
texsprint(tex.ctxcatcodes, "\\egroup")
lxml.directives.after(root,'cdx')
end
function lxml.context.combination(root,namespace)
if not root then
return
else
root = lxml.id(root)
end
local prefix = (namespace or "context") .. ":"
local pairspec = "/" .. prefix .. "pair"
local contentspec = "/" .. prefix .. "content" .. "/text()"
local captionspec = "/" .. prefix .. "caption" .. "/text()"
local nx, ny = root.at.nx, root.at.ny
if not (nx or ny) then
nx = xml.count(root,pairspec) or 2
end
local template = string.format("%s*%s", nx or 1, ny or 1)
lxml.directives.before(root,'cdx')
texsprint(tex.ctxcatcodes, "\\bgroup")
lxml.directives.setup(root,'cdx')
-- todo: alignments
texsprint(tex.ctxcatcodes, string.format("\\startcombination[%s]",template))
for r, d, k in xml.elements(root,pairspec) do
local dk = d[k]
texsprint(tex.ctxcatcodes,"{")
xmlsprint(xml.filter(dk,contentspec) or "")
texsprint(tex.ctxcatcodes,"}")
texsprint(tex.ctxcatcodes,"{")
xmlsprint(xml.filter(dk,captionspec) or "")
texsprint(tex.ctxcatcodes,"}")
end
texsprint(tex.ctxcatcodes, "\\stopcombination")
texsprint(tex.ctxcatcodes, "\\egroup")
lxml.directives.after(root,'cdx')
end
end
\stopluacode
\startxmlsetups xml:context:process
\xmlsetfunction {\xmldocument} {context:tabulate} {lxml.context.tabulate}
\xmlsetfunction {\xmldocument} {context:combination} {lxml.context.combination}
\stopxmlsetups
\xmlregistersetup{xml:context:process}
\xmlregisterns{context}{context}
\endinput
% this replaces:
% \startxmlsetups tabulate
% \starttabulate[||p|]
% \xmlall{#1}{/body/row}
% \stoptabulate
% \stopxmlsetups
% \startxmlsetups tabulate:row
% \NC \xmlall{#1}{/cell} \NR
% \stopxmlsetups
% \startxmlsetups tabulate:cell
% \xmlflush{#1} \NC
% \stopxmlsetups
% \startxmlsetups combination
% \startcollecting
% \startcollect
% \startcombination[\xmlatt{#1}{nx}*\xmlatt{#1}{ny}]
% \stopcollect
% \xmlloop {#1} {combiblock} {
% \startcollect
% {\xmli{/content}{##1}}
% {\xmli{/caption}{##1}}
% \stopcollect
% }
% \startcollect
% \stopcombination
% \stopcollect
% \stopcollecting
% \stopxmlsetups
|
