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if not modules then modules = { } end modules ['lxml-ini'] = {
version = 1.001,
comment = "companion to lxml-ini.tex",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
document = document or { }
document.xml = document.xml or { }
lxml = { }
lxml.loaded = { }
lxml.self = { }
do
local crlf = lpeg.P("\r\n")
local cr = lpeg.P("\r")
local lf = lpeg.P("\n")
local space = lpeg.S(" \t\f\v")
local newline = crlf + cr + lf
local spacing = space^0 * newline * space^0
local content = lpeg.C((1-spacing)^1)
local verbose = lpeg.C((1-(space+newline))^1)
local capture = (
newline^2 * lpeg.Cc("") / tex.print +
newline * lpeg.Cc(" ") / tex.sprint +
content / tex.sprint
)^0
xml.specialhandler = { }
local function sprint(root)
if not root then
-- quit
elseif type(root) == 'string' then
lpeg.match(capture,root)
elseif next(root) then
xml.serialize(root,sprint,nil,nil,xml.specialhandler)
end
end
xml.sprint = sprint
function xml.tprint(root)
if type(root) == "table" then
for i=1,#root do
sprint(root[i])
end
elseif type(root) == "string" then
sprint(root)
end
end
-- lines (untested)
local buffer = { }
local capture = (
newline^2 / function() buffer[#buffer+1] = "" end +
newline / function() buffer[#buffer] = buffer[#buffer] .. " " end +
content / function(s) buffer[#buffer] = buffer[#buffer] .. s end
)^0
function lines(root)
if not root then
-- quit
elseif type(root) == 'string' then
lpeg.match(capture,root)
elseif next(root) then
xml.serialize(root, lines)
end
end
function xml.lines(root)
buffer = { "" }
lines(root)
return result
end
-- cdata
local linecommand = "\\obeyedline"
local spacecommand = "\\obeyedspace" -- "\\strut\\obeyedspace"
local beforecommand = ""
local aftercommand = ""
local capture = (
newline / function( ) tex.sprint(tex.texcatcodes,linecommand .. "{}") end +
verbose / function(s) tex.sprint(tex.vrbcatcodes,s) end +
space / function( ) tex.sprint(tex.texcatcodes,spacecommand .. "{}") end
)^0
function toverbatim(str)
if beforecommand then tex.sprint(tex.texcatcodes,beforecommand .. "{}") end
lpeg.match(capture,str)
if aftercommand then tex.sprint(tex.texcatcodes,aftercommand .. "{}") end
end
function lxml.set_verbatim(before,after,obeyedline,obeyedspace)
beforecommand, aftercommand, linecommand, spacecommand = before, after, obeyedline, obeyedspace
end
function lxml.set_cdata()
xml.specialhandler['@cd@'] = toverbatim
end
function lxml.reset_cdata()
xml.specialhandler['@cd@'] = nil
end
function lxml.verbatim(id,before,after)
local root = lxml.id(id)
if before then tex.sprint(tex.ctxcatcodes,string.format("%s[%s]",before,root.tg)) end
xml.serialize(root.dt,toverbatim,nil,nil,nil,true) -- was root
if after then tex.sprint(tex.ctxcatcodes,after) end
end
function lxml.inlineverbatim(id)
lxml.verbatim(id,"\\startxmlinlineverbatim","\\stopxmlinlineverbatim")
end
function lxml.displayverbatim(id)
lxml.verbatim(id,"\\startxmldisplayverbatim","\\stopxmldisplayverbatim")
end
end
-- now comes the lxml one
function lxml.id(id)
return (type(id) == "table" and id) or lxml.loaded[id] or lxml.self[tonumber(id)]
end
function lxml.root(id)
return lxml.loaded[id]
end
-- redefine xml load
xml.originalload = xml.load
function xml.load(filename)
input.starttiming(lxml)
local x = xml.originalload(filename)
input.stoptiming(lxml)
return x
end
function lxml.filename(filename) -- some day we will do this in input, first figure out /
return input.find_file(texmf.instance,url.filename(filename)) or ""
end
function lxml.load(id,filename)
if texmf then
local fullname = lxml.filename(filename)
if fullname ~= "" then
filename = fullname
end
end
lxml.loaded[id] = xml.load(filename)
return lxml.loaded[id], filename
end
function lxml.include(id,pattern,attribute,recurse)
xml.include(lxml.id(id),pattern,attribute,recurse,lxml.filename)
end
function lxml.utfize(id)
xml.utfize(lxml.id(id))
end
function lxml.filter(id,pattern)
xml.sprint(xml.filter(lxml.id(id),pattern))
end
function lxml.first(id,pattern)
xml.sprint(xml.first(lxml.id(id),pattern))
end
function lxml.last(id,pattern)
xml.sprint(xml.last(lxml.id(id),pattern))
end
function lxml.all(id,pattern)
xml.tprint(xml.collect(lxml.id(id),pattern))
end
function lxml.nonspace(id,pattern)
xml.tprint(xml.collect(lxml.id(id),pattern,true))
end
function lxml.strip(id,pattern)
xml.strip(lxml.id(id),pattern)
end
function lxml.text(id,pattern)
xml.tprint(xml.collect_texts(lxml.id(id),pattern) or {})
end
function lxml.content(id,pattern)
xml.sprint(xml.content(lxml.id(id),pattern) or "")
end
function lxml.stripped(id,pattern)
local str = xml.content(lxml.id(id),pattern) or ""
xml.sprint((str:gsub("^%s*(.-)%s*$","%1")))
end
function lxml.flush(id)
xml.sprint(lxml.id(id).dt)
end
function lxml.index(id,pattern,i)
xml.sprint((xml.filters.index(lxml.id(id),pattern,i)))
end
function lxml.attribute(id,pattern,a,default) --todo: snelle xmlatt
local str = xml.filters.attribute(lxml.id(id),pattern,a) or ""
tex.sprint((str == "" and default) or str)
end
function lxml.count(id,pattern)
tex.sprint(xml.count(lxml.id(id),pattern) or 0)
end
function lxml.name(id) -- or remapped name?
local r = lxml.id(id)
if r.ns then
tex.sprint(r.ns .. ":" .. r.tg)
else
tex.sprint(r.tg)
end
end
function lxml.tag(id)
tex.sprint(lxml.id(id).tg or "")
end
function lxml.namespace(id) -- or remapped name?
local root = lxml.id(id)
tex.sprint(root.rn or root.ns or "")
end
--~ function lxml.concat(id,what,separator,lastseparator)
--~ tex.sprint(table.concat(xml.collect_texts(lxml.id(id),what,true),separator or ""))
--~ end
function lxml.concat(id,what,separator,lastseparator)
local t = xml.collect_texts(lxml.id(id),what,true)
local separator = separator or ""
local lastseparator = lastseparator or separator or ""
for i=1,#t do
tex.sprint(t[i])
if i == #t then
-- nothing
elseif i == #t-1 and lastseparator ~= "" then
tex.sprint(tex.ctxcatcodes,lastseparator)
elseif separator ~= "" then
tex.sprint(tex.ctxcatcodes,separator)
end
end
end
function xml.command(root) -- todo: free self after usage, so maybe hash after all
-- no longer needed: xml.sflush()
if type(root.command) == "string" then
local n = #lxml.self + 1
lxml.self[n] = root
if xml.trace_print then
texio.write_nl(string.format("tex.sprint: (((%s:%s)))",n,root.command))
end
-- problems with empty elements
tex.sprint(tex.ctxcatcodes,string.format("\\xmlsetup{%s}{%s}",n,root.command)) -- no sprint, else spaces go wrong
else
root.command(root)
end
end
function lxml.setaction(id,pattern,action)
for rt, dt, dk in xml.elements(lxml.id(id),pattern) do
dt[dk].command = action
end
end
lxml.trace_setups = false
function lxml.setsetup(id,pattern,setup)
local trace = lxml.trace_setups
if not setup or setup == "" or setup == "*" then
for rt, dt, dk in xml.elements(lxml.id(id),pattern) do
local dtdk = dt and dt[dk] or rt
local ns, tg = dtdk.rn or dtdk.ns, dtdk.tg
if ns == "" then
dtdk.command = tg
else
dtdk.command = ns .. ":" .. tg
end
if trace then
texio.write_nl(string.format("lpath matched -> %s -> %s", dtdk.command, dtdk.command))
end
end
else
if trace then
texio.write_nl(string.format("lpath pattern -> %s -> %s", pattern, setup))
end
for rt, dt, dk in xml.elements(lxml.id(id),pattern) do
local dtdk = (dt and dt[dk]) or rt
dtdk.command = setup
if trace then
local ns, tg = dtdk.rn or dtdk.ns, dtdk.tg
if ns == "" then
texio.write_nl(string.format("lpath matched -> %s -> %s", tg, setup))
else
texio.write_nl(string.format("lpath matched -> %s:%s -> %s", ns, tg, setup))
end
end
end
end
end
function lxml.idx(id,pattern,i)
local r = lxml.id(id)
if r then
local rp = r.patterns
if not rp then
rp = { }
r.patterns = rp
end
if not rp[pattern] then
rp[pattern] = xml.collect_elements(r,pattern) -- dd, rr
end
local rpi = rp[pattern] and rp[pattern][i]
if rpi then
xml.sprint(rpi)
end
end
end
do
local traverse = xml.traverse
local lpath = xml.lpath
function xml.filters.command(root,pattern,command) -- met zonder ''
command = command:gsub("^([\'\"])(.-)%1$", "%2")
traverse(root, lpath(pattern), function(r,d,k)
-- this can become pretty large
local n = #lxml.self + 1
lxml.self[n] = (d and d[k]) or r
tex.sprint(tex.ctxcatcodes,string.format("\\xmlsetup{%s}{%s}",n,command))
end)
end
function lxml.command(id,pattern,command)
xml.filters.command(lxml.id(id),pattern,command)
end
end
do
--~ <?xml version="1.0" standalone="yes"?>
--~ <!-- demo.cdx -->
--~ <directives>
--~ <!--
--~ <directive attribute='id' value="100" setup="cdx:100"/>
--~ <directive attribute='id' value="101" setup="cdx:101"/>
--~ -->
--~ <!--
--~ <directive attribute='cdx' value="colors" element="cals:table" setup="cdx:cals:table:colors"/>
--~ <directive attribute='cdx' value="vertical" element="cals:table" setup="cdx:cals:table:vertical"/>
--~ <directive attribute='cdx' value="noframe" element="cals:table" setup="cdx:cals:table:noframe"/>
--~ -->
--~ <directive attribute='cdx' value="*" element="cals:table" setup="cdx:cals:table:*"/>
--~ </directives>
lxml.directives = { }
local data = {
setup = { },
before = { },
after = { }
}
function lxml.directives.load(filename)
if texmf then
local fullname = input.find_file(texmf.instance,filename) or ""
if fullname ~= "" then
filename = fullname
end
end
local root = xml.load(filename)
local format = string.format
for r, d, k in xml.elements(root,"directive") do
local dk = d[k]
local at = dk.at
local attribute, value, element = at.attribute or "", at.value or "", at.element or '*'
local setup, before, after = at.setup or "", at.before or "", at.after or ""
if attribute ~= "" and value ~= "" then
local key = format("%s::%s::%s",element,attribute,value)
local t = data[key] or { }
if setup ~= "" then t.setup = setup end
if before ~= "" then t.before = before end
if after ~= "" then t.after = after end
data[key] = t
end
end
end
function lxml.directives.setup(root,attribute,element)
lxml.directives.handle_setup('setup',root,attribute,element)
end
function lxml.directives.before(root,attribute,element)
lxml.directives.handle_setup('before',root,attribute,element)
end
function lxml.directives.after(root,attribute,element)
lxml.directives.handle_setup('after',root,attribute,element)
end
function lxml.directives.handle_setup(category,root,attribute,element)
root = lxml.id(root)
attribute = attribute
if attribute then
local value = root.at[attribute]
if value then
if not element then
local ns, tg = root.rn or root.ns, root.tg
if ns == "" then
element = tg
else
element = ns .. ':' .. tg
end
end
local format = string.format
local setup = data[format("%s::%s::%s",element,attribute,value)]
if setup then
setup = setup[category]
end
if setup then
tex.sprint(tex.ctxcatcodes,format("\\directsetup{%s}",setup))
else
setup = data[format("%s::%s::*",element,attribute)]
if setup then
setup = setup[category]
end
if setup then
tex.sprint(tex.ctxcatcodes,format("\\directsetup{%s}",setup:gsub('%*',value)))
end
end
end
end
end
end
function xml.getbuffer(name) -- we need to make sure that commands are processed
xml.tostring(xml.convert(table.join(buffers.data[name] or {},"")))
end
function lxml.loadbuffer(id,name)
input.starttiming(lxml)
lxml.loaded[id] = xml.convert(table.join(buffers.data[name or id] or {},""))
input.stoptiming(lxml)
return lxml.loaded[id], name or id
end
-- for the moment here:
lxml.set_verbatim("\\xmlcdatabefore", "\\xmlcdataafter", "\\xmlcdataobeyedline", "\\xmlcdataobeyedspace")
lxml.set_cdata()
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