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# module : base/mp
# copyright : PRAGMA Advanced Document Engineering
# version : 2005-2006
# author : Hans Hagen
#
# project : ConTeXt / eXaMpLe
# concept : Hans Hagen
# info : j.hagen@xs4all.nl
# www : www.pragma-ade.com
module MPTools
@@definitions, @@start, @@stop, @@before, @@after = Hash.new, Hash.new, Hash.new, Hash.new, Hash.new
@@definitions['plain'] = <<EOT
\\gdef\\mpxshipout{\\shipout\\hbox\\bgroup
\\setbox0=\\hbox\\bgroup}
\\gdef\\stopmpxshipout{\\egroup \\dimen0=\\ht0 \\advance\\dimen0\\dp0
\\dimen1=\\ht0 \\dimen2=\\dp0
\\setbox0=\\hbox\\bgroup
\\box0
\\ifnum\\dimen0>0 \\vrule width1sp height\\dimen1 depth\\dimen2
\\else \\vrule width1sp height1sp depth0sp\\relax
\\fi\\egroup
\\ht0=0pt \\dp0=0pt \\box0 \\egroup}
EOT
@@start ['plain'] = ""
@@before['plain'] = "\\mpxshipout"
@@after ['plain'] = "\\stopmpxshipout"
@@stop ['plain'] = "\\end{document}"
@@definitions['context'] = <<EOT
\\ifx\\startMPXpage\\undefined
\\ifx\\loadallfontmapfiles\\undefined \\let\\loadallfontmapfiles\\relax \\fi
\\gdef\\startMPXpage
{\\shipout\\hbox
\\bgroup
\\setbox0=\\hbox
\\bgroup}
\\gdef\\stopMPXpage
{\\egroup
\\dimen0=\\ht0
\\advance\\dimen0\\dp0
\\dimen1=\\ht0
\\dimen2=\\dp0
\\setbox0=\\hbox\\bgroup
\\box0
\\ifnum\\dimen0>0
\\vrule width 1sp height \\dimen1 depth \\dimen2
\\else
\\vrule width 1sp height 1sp depth 0sp \\relax
\\fi
\\egroup
\\ht0=0pt
\\dp0=0pt
\\loadallfontmapfiles
\\box0
\\egroup}
\\fi
\\ifx\\starttext\\undefined
\\let\\starttext\\relax
\\def\\stoptext{\\end{document}}
\\fi
EOT
@@start ['context'] = "\\starttext"
@@before['context'] = "\\startMPXpage"
@@after ['context'] = "\\stopMPXpage"
@@stop ['context'] = "\\stoptext"
# todo: \usemodule[m-mpx ] and test fo defined
def MPTools::mptotex(from,to=nil,method='plain')
begin
if from && data = IO.read(from) then
f = if to then File.open(to,'w') else $stdout end
f.puts("% file: #{from}")
f.puts("")
f.puts(@@definitions[method])
unless @@start[method].empty? then
f.puts("")
f.puts(@@start[method])
end
data.gsub!(/([^\\])%.*?$/mo) do
$1
end
data.scan(/(verbatim|b)tex\s*(.*?)\s*etex/mo) do
tag, text = $1, $2
f.puts("")
if tag == 'b' then
f.puts(@@before[method])
f.puts("#{text}%")
f.puts(@@after [method])
else
f.puts("#{text}")
end
f.puts("")
end
f.puts("")
f.puts(@@stop[method])
f.close
else
return false
end
rescue
File.delete(to) rescue false
return false
else
return true
end
end
@@splitMPlines = false
def MPTools::splitmplines(str)
if @@splitMPlines then
btex, verbatimtex, strings, result = Array.new, Array.new, Array.new, str.dup
# protect texts
result.gsub!(/btex\s*(.*?)\s*etex/) do
btex << $1
"btex(#{btex.length-1})"
end
result.gsub!(/verbatimtex\s*(.*?)\s*etex/) do
verbatimtex << $1
"verbatimtex(#{verbatimtex.length-1})"
end
result.gsub!(/\"(.*?)\"/) do
strings << $1
"\"#{strings.length-1}\""
end
result.gsub!(/\;/) do
";\n"
end
result.gsub!(/(.{80,})(\-\-\-|\-\-|\.\.\.|\.\.)/) do
"#{$1}#{$2}\n"
end
result.gsub!(/\n[\s\n]+/moi) do
"\n"
end
result.gsub!(/btex\((\d+)\)/) do
"btex #{btex[$1.to_i]} etex"
end
result.gsub!(/verbatimtex\((\d+)\)/) do
"verbatimtex #{verbatimtex[$1.to_i]} etex"
end
result.gsub!(/\"(\d+)\"/) do
"\"#{strings[$1.to_i]}\""
end
# return result # let's catch xetex bug
return result.gsub(/\^\^(M|J)/o, "\n")
else
# return str # let's catch xetex bug
return str.gsub(/\^\^(M|J)/o, "\n")
end
end
end
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