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if not modules then modules = { } end modules ['syst-lua'] = {
version = 1.001,
comment = "companion to syst-lua.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local find, match = string.find, string.match
local tonumber = tonumber
local S, C, P, lpegmatch, lpegtsplitat = lpeg.S, lpeg.C, lpeg.P, lpeg.match, lpeg.tsplitat
commands = commands or { }
local commands = commands
local implement = interfaces.implement
local two_strings = interfaces.strings[2]
local context = context
local csprint = context.sprint
local prtcatcodes = tex.prtcatcodes
implement { -- will b eoverloaded later
name = "writestatus",
arguments = two_strings,
actions = logs.status,
}
local ctx_firstoftwoarguments = context.firstoftwoarguments -- context.constructcsonly("firstoftwoarguments" )
local ctx_secondoftwoarguments = context.secondoftwoarguments -- context.constructcsonly("secondoftwoarguments")
local ctx_firstofoneargument = context.firstofoneargument -- context.constructcsonly("firstofoneargument" )
local ctx_gobbleoneargument = context.gobbleoneargument -- context.constructcsonly("gobbleoneargument" )
-- contextsprint(prtcatcodes,[[\ui_fo]]) -- ctx_firstofonearguments
-- contextsprint(prtcatcodes,[[\ui_go]]) -- ctx_gobbleonearguments
-- contextsprint(prtcatcodes,[[\ui_ft]]) -- ctx_firstoftwoarguments
-- contextsprint(prtcatcodes,[[\ui_st]]) -- ctx_secondoftwoarguments
function commands.doifelse(b)
if b then
ctx_firstoftwoarguments()
-- csprint(prtcatcodes,[[\ui_ft]]) -- ctx_firstoftwoarguments
else
ctx_secondoftwoarguments()
-- csprint(prtcatcodes,[[\ui_st]]) -- ctx_secondoftwoarguments
end
end
function commands.doifelsesomething(b)
if b and b ~= "" then
ctx_firstoftwoarguments()
-- csprint(prtcatcodes,[[\ui_ft]]) -- ctx_firstoftwoarguments
else
ctx_secondoftwoarguments()
-- csprint(prtcatcodes,[[\ui_st]]) -- ctx_secondoftwoarguments
end
end
function commands.doif(b)
if b then
ctx_firstofoneargument()
-- context.__flushdirect(prtcatcodes,[[\ui_fo]]) -- ctx_firstofonearguments
else
ctx_gobbleoneargument()
-- context.__flushdirect(prtcatcodes,[[\ui_go]]) -- ctx_gobbleonearguments
end
end
function commands.doifsomething(b)
if b and b ~= "" then
ctx_firstofoneargument()
-- context.__flushdirect(prtcatcodes,[[\ui_fo]]) -- ctx_firstofonearguments
else
ctx_gobbleoneargument()
-- context.__flushdirect(prtcatcodes,[[\ui_go]]) -- ctx_gobbleonearguments
end
end
function commands.doifnot(b)
if b then
ctx_gobbleoneargument()
-- csprint(prtcatcodes,[[\ui_go]]) -- ctx_gobbleonearguments
else
ctx_firstofoneargument()
-- csprint(prtcatcodes,[[\ui_fo]]) -- ctx_firstofonearguments
end
end
function commands.doifnotthing(b)
if b and b ~= "" then
ctx_gobbleoneargument()
-- csprint(prtcatcodes,[[\ui_go]]) -- ctx_gobbleonearguments
else
ctx_firstofoneargument()
-- csprint(prtcatcodes,[[\ui_fo]]) -- ctx_firstofonearguments
end
end
commands.testcase = commands.doifelse -- obsolete
function commands.boolcase(b)
context(b and 1 or 0)
end
function commands.doifelsespaces(str)
if find(str,"^ +$") then
ctx_firstoftwoarguments()
else
ctx_secondoftwoarguments()
end
end
local pattern = lpeg.patterns.validdimen
function commands.doifelsedimenstring(str)
if lpegmatch(pattern,str) then
ctx_firstoftwoarguments()
else
ctx_secondoftwoarguments()
end
end
local p_first = C((1-P(",")-P(-1))^0)
implement {
name = "firstinset",
arguments = "string",
actions = function(str) context(lpegmatch(p_first,str or "")) end
}
implement {
name = "ntimes",
arguments = { "string", "integer" },
actions = { string.rep, context }
}
implement {
name = "execute",
arguments = "string",
actions = os.execute -- wrapped in sandbox
}
implement {
name = "doifelsesame",
arguments = two_strings,
actions = function(a,b)
if a == b then
ctx_firstoftwoarguments()
else
ctx_secondoftwoarguments()
end
end
}
implement {
name = "doifsame",
arguments = two_strings,
actions = function(a,b)
if a == b then
ctx_firstofoneargument()
else
ctx_gobbleoneargument()
end
end
}
implement {
name = "doifnotsame",
arguments = two_strings,
actions = function(a,b)
if a == b then
ctx_gobbleoneargument()
else
ctx_firstofoneargument()
end
end
}
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