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-- filename : luat-deb.lua
-- comment : companion to luat-deb.tex
-- author : Hans Hagen, PRAGMA-ADE, Hasselt NL
-- copyright: PRAGMA ADE / ConTeXt Development Team
-- license : see context related readme files
if not versions then versions = { } end versions['luat-deb'] = 1.001
if not lmx then lmx = { } end
if not lmx.variables then lmx.variables = { } end
lmx.variables['color-background-green'] = '#4F6F6F'
lmx.variables['color-background-blue'] = '#6F6F8F'
lmx.variables['color-background-yellow'] = '#8F8F6F'
lmx.variables['color-background-purple'] = '#8F6F8F'
lmx.variables['color-background-body'] = '#808080'
lmx.variables['color-background-main'] = '#3F3F3F'
lmx.variables['color-background-one'] = lmx.variables['color-background-green']
lmx.variables['color-background-two'] = lmx.variables['color-background-blue']
lmx.variables['title-default'] = 'ConTeXt Status Information'
lmx.variables['title'] = lmx.variables['title-default']
if not tracers then tracers = { } end
if not tracers.list then tracers.list = { } end
if not tracers.strings then tracers.strings = { } end
tracers.strings.undefined = "undefined"
function tracers.split(csname)
return csname:match("^(.+):(.+)$")
end
function tracers.type(csname)
tag, name = tracers.split(csname)
if tag then return tag else return nil end
end
function tracers.name(csname)
tag, name = tracers.split(csname)
if tag then return name else return csname end
end
function tracers.cs(csname)
tag, name = tracers.split(csname)
if tracers.types[tag] then
return tracers.types[tag](name)
else
return tracers.primitive(csname)
end
end
function tracers.dimen(name)
return (tex.dimen[name] and number.topoints(tex.dimen[name])) or tracers.strings.undefined
end
function tracers.count(name)
return tex.count[name] or tracers.strings.undefined
end
function tracers.toks(name)
return (tex.toks[name] and string.limit(tex.toks[name],40)) or tracers.strings.undefined
end
function tracers.primitive(name)
return tex[name] or tracers.strings.undefined
end
tracers.types = {
['d'] = tracers.dimen,
['c'] = tracers.count,
['t'] = tracers.toks,
['p'] = tracers.primitive
}
function tracers.knownlist(name)
return tracers.list[name] and #tracers.list[name] > 0
end
function tracers.showdebuginfo()
lmx.set('title', 'ConTeXt Debug Information')
lmx.set('color-background-one', lmx.get('color-background-green'))
lmx.set('color-background-two', lmx.get('color-background-blue'))
lmx.show('context-debug.lmx')
lmx.restore()
end
function tracers.showerror()
lmx.set('title', 'ConTeXt Error Information')
lmx.set('errormessage', status.lasterrorstring)
lmx.set('linenumber', status.linenumber)
lmx.set('color-background-one', lmx.get('color-background-yellow'))
lmx.set('color-background-two', lmx.get('color-background-purple'))
local filename = status.filename
local linenumber = tonumber(status.linenumber or "0")
if not filename then
lmx.set('filename', 'unknown')
lmx.set('errorcontext', 'error in filename')
elseif type(filename) == "number" then
lmx.set('filename', "<read " .. filename .. ">")
lmx.set('errorcontext', 'unknown error')
elseif io.exists(filename) then
-- todo: use an input opener so that we also catch utf16 an reencoding
lmx.set('filename', filename)
lines = io.lines(filename)
if lines then
local context = { }
n, m = 1, linenumber
b, e = m-10, m+10
s = string.len(tostring(e))
for line in lines do
if n > e then
break
elseif n > b then
if n == m then
context[#context+1] = string.format("%" .. s .. "d",n) .. " >> " .. line
else
context[#context+1] = string.format("%" .. s .. "d",n) .. " " .. line
end
end
n = n + 1
end
lmx.set('errorcontext', table.concat(context,"\n"))
else
lmx.set('errorcontext', "")
end
else
lmx.set('filename', filename)
lmx.set('errorcontext', 'file not found')
end
lmx.show('context-error.lmx')
lmx.restore()
end
function tracers.overloaderror()
--~ callback.register('show_error_hook', function(identifier, filename, linenumber)
--~ tracers.showerror(identifier, filename, linenumber)
--~ end )
callback.register('show_error_hook', tracers.showerror)
end
tracers.list['scratch'] = {
0, 2, 4, 6, 8
}
tracers.list['internals'] = {
'p:hsize', 'p:parindent', 'p:leftskip','p:rightskip',
'p:vsize', 'p:parskip', 'p:baselineskip', 'p:lineskip', 'p:topskip'
}
tracers.list['context'] = {
'd:lineheight',
'c:realpageno', 'c:pageno', 'c:subpageno'
}
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