diff options
Diffstat (limited to 'tex/context/base/back-ini.lua')
| -rw-r--r-- | tex/context/base/back-ini.lua | 212 |
1 files changed, 106 insertions, 106 deletions
diff --git a/tex/context/base/back-ini.lua b/tex/context/base/back-ini.lua index bdd931abd..1568e3564 100644 --- a/tex/context/base/back-ini.lua +++ b/tex/context/base/back-ini.lua @@ -1,106 +1,106 @@ -if not modules then modules = { } end modules ['back-ini'] = { - version = 1.001, - comment = "companion to back-ini.mkiv", - author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", - copyright = "PRAGMA ADE / ConTeXt Development Team", - license = "see context related readme files" -} - -local next, type = next, type -local format = string.format -local sind, cosd = math.sind, math.cosd - -backends = backends or { } -local backends = backends - -local trace_backend = false trackers.register("backend.initializers", function(v) trace_finalizers = v end) - -local report_backend = logs.reporter("backend","initializing") - -local allocate = utilities.storage.allocate -local setmetatableindex = table.setmetatableindex - -local function nothing() return nil end - -backends.nothing = nothing - -local nodeinjections = { } -local codeinjections = { } -local registrations = { } -local tables = allocate() - -local function donothing(t,k) - t[k] = nothing - return nothing -end - -setmetatableindex(nodeinjections, donothing) -setmetatableindex(codeinjections, donothing) -setmetatableindex(registrations, donothing) - -local defaults = { - nodeinjections = nodeinjections, - codeinjections = codeinjections, - registrations = registrations, - tables = tables, -} - -backends.defaults = defaults - -backends.nodeinjections = { } setmetatableindex(backends.nodeinjections, nodeinjections) -backends.codeinjections = { } setmetatableindex(backends.codeinjections, codeinjections) -backends.registrations = { } setmetatableindex(backends.registrations, registrations) -backends.tables = { } setmetatableindex(backends.tables, tables) - -backends.current = "unknown" - -function backends.install(what) - if type(what) == "string" then - local backend = backends[what] - if backend then - if trace_backend then - if backend.comment then - report_backend("initializing backend %a, %a",what,backend.comment) - else - report_backend("initializing backend %a",what) - end - end - backends.current = what - for category, default in next, defaults do - local target, plugin = backends[category], backend[category] - setmetatableindex(plugin, default) - setmetatableindex(target, plugin) - end - elseif trace_backend then - report_backend("no backend named %a",what) - end - end -end - -statistics.register("used backend", function() - local bc = backends.current - if bc ~= "unknown" then - return format("%s (%s)",bc,backends[bc].comment or "no comment") - else - return nil - end -end) - -local comment = { "comment", "" } - -tables.vfspecials = allocate { - red = comment, - green = comment, - blue = comment, - black = comment, - startslant = comment, - stopslant = comment, -} - --- experimental code -- - -function commands.pdfrotation(a) -- somewhat weird here - local s, c = sind(a), cosd(a) - context("%0.6f %0.6f %0.6f %0.6f",c,s,-s,c) -end - +if not modules then modules = { } end modules ['back-ini'] = {
+ version = 1.001,
+ comment = "companion to back-ini.mkiv",
+ author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+ copyright = "PRAGMA ADE / ConTeXt Development Team",
+ license = "see context related readme files"
+}
+
+local next, type = next, type
+local format = string.format
+local sind, cosd = math.sind, math.cosd
+
+backends = backends or { }
+local backends = backends
+
+local trace_backend = false trackers.register("backend.initializers", function(v) trace_finalizers = v end)
+
+local report_backend = logs.reporter("backend","initializing")
+
+local allocate = utilities.storage.allocate
+local setmetatableindex = table.setmetatableindex
+
+local function nothing() return nil end
+
+backends.nothing = nothing
+
+local nodeinjections = { }
+local codeinjections = { }
+local registrations = { }
+local tables = allocate()
+
+local function donothing(t,k)
+ t[k] = nothing
+ return nothing
+end
+
+setmetatableindex(nodeinjections, donothing)
+setmetatableindex(codeinjections, donothing)
+setmetatableindex(registrations, donothing)
+
+local defaults = {
+ nodeinjections = nodeinjections,
+ codeinjections = codeinjections,
+ registrations = registrations,
+ tables = tables,
+}
+
+backends.defaults = defaults
+
+backends.nodeinjections = { } setmetatableindex(backends.nodeinjections, nodeinjections)
+backends.codeinjections = { } setmetatableindex(backends.codeinjections, codeinjections)
+backends.registrations = { } setmetatableindex(backends.registrations, registrations)
+backends.tables = { } setmetatableindex(backends.tables, tables)
+
+backends.current = "unknown"
+
+function backends.install(what)
+ if type(what) == "string" then
+ local backend = backends[what]
+ if backend then
+ if trace_backend then
+ if backend.comment then
+ report_backend("initializing backend %a, %a",what,backend.comment)
+ else
+ report_backend("initializing backend %a",what)
+ end
+ end
+ backends.current = what
+ for category, default in next, defaults do
+ local target, plugin = backends[category], backend[category]
+ setmetatableindex(plugin, default)
+ setmetatableindex(target, plugin)
+ end
+ elseif trace_backend then
+ report_backend("no backend named %a",what)
+ end
+ end
+end
+
+statistics.register("used backend", function()
+ local bc = backends.current
+ if bc ~= "unknown" then
+ return format("%s (%s)",bc,backends[bc].comment or "no comment")
+ else
+ return nil
+ end
+end)
+
+local comment = { "comment", "" }
+
+tables.vfspecials = allocate {
+ red = comment,
+ green = comment,
+ blue = comment,
+ black = comment,
+ startslant = comment,
+ stopslant = comment,
+}
+
+-- experimental code --
+
+function commands.pdfrotation(a) -- somewhat weird here
+ local s, c = sind(a), cosd(a)
+ context("%0.6f %0.6f %0.6f %0.6f",c,s,-s,c)
+end
+
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