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if not modules then modules = { } end modules ['libs-imp-ghostscript'] = {
version = 1.001,
comment = "companion to luat-lib.mkxl",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files",
}
local libname = "ghostscript"
local libfile = "gsdll64" -- what on unix?
local gslib = resolvers.libraries.validoptional(libname)
if not gslib then return end
local function okay()
if resolvers.libraries.optionalloaded(libname,libfile) then
okay = function() return true end
else
okay = function() return false end
end
return okay()
end
local insert = table.insert
local formatters = string.formatters
local ghostscript = utilities.ghostscript or { }
utilities.ghostscript = ghostscript
local gs_execute = gslib.execute
local nofruns = 0
local report = logs.reporter(libname)
function ghostscript.convert(specification)
if okay() then
--
nofruns = nofruns + 1
statistics.starttiming(ghostscript)
--
local inputname = specification.inputname
if not inputname or inputname == "" then
report("invalid run %s, no inputname specified",nofruns)
statistics.stoptiming(ghostscript)
return false
end
local outputname = specification.outputname
if not outputname or outputname == "" then
outputname = file.replacesuffix(inputname,"pdf")
end
--
if not lfs.isfile(inputname) then
report("invalid run %s, input file %a is not found",nofruns,inputname)
statistics.stoptiming(ghostscript)
return false
end
--
local device = specification.device
if not device or device == "" then
device = "pdfwrite"
end
--
local code = specification.code
if not code or code == "" then
code = ".setpdfwrite"
end
--
local options = specification.options or { }
--
insert(options,"-dNOPAUSE")
insert(options,"-dBATCH")
insert(options,"-dSAFER")
insert(options,formatters["-sDEVICE=%s"](device))
insert(options,formatters["-sOutputFile=%s"](outputname))
insert(options,"-c")
insert(options,code)
insert(options,"-f")
insert(options,inputname)
--
report("run %s, input file %a, outputfile %a",nofruns,inputname,outputname)
report("")
local done = gslib_execute(options)
report("")
--
statistics.stoptiming(ghostscript)
if done then
return outputname
else
report("run %s quit with errors",nofruns)
return false
end
end
end
function ghostscript.statistics(report)
local runtime = statistics.elapsedtime(ghostscript)
if report then
report("nofruns %s, runtime %s",nofruns,runtime)
else
return {
runtime = runtime,
nofruns = nofruns,
}
end
end
-- for i=1,100 do
-- ghostscript.convert { inputname = "temp.eps" }
-- ghostscript.convert { inputname = "t:/escrito/tiger.eps" }
-- end
-- ghostscript.statistics(true)
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