2017-08-06 16:19:00

1 files changed, 51 insertions, 0 deletions

diff --git a/tex/context/base/mkiv/page-ini.lua b/tex/context/base/mkiv/page-ini.lua
new file mode 100644
index 000000000..1aeae8f09
--- /dev/null
+++ b/tex/context/base/mkiv/page-ini.lua
@@ -0,0 +1,51 @@
+if not modules then modules = { } end modules ['page-ini'] = {
+    version   = 1.001,
+    comment   = "companion to page-ini.mkiv",
+    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files"
+}
+
+local tonumber, rawget = tonumber, rawget
+local gmatch = string.gmatch
+
+local texgetcount  = tex.getcount
+
+local ctx_testcase = commands.testcase
+
+local data = table.setmetatableindex("table")
+local last = 0
+
+interfaces.implement {
+    name      = "markpage",
+    arguments = { "string", "string" },
+    actions   = function(name,list)
+        local realpage = texgetcount("realpageno")
+        if list and list ~= "" then
+            for sign, page in gmatch(list,"([%+%-])(%d+)") do
+                page = tonumber(page)
+                if page then
+                    if sign == "+" then
+                        page = realpage + page
+                    end
+                    data[page][name] = true
+                end
+            end
+        else
+            data[realpage][name] = true
+        end
+    end
+}
+
+interfaces.implement {
+    name      = "doifelsemarkedpage",
+    arguments = "string",
+    actions   = function(name)
+        local realpage = texgetcount("realpageno")
+        for i=last,realpage-1 do
+            data[i] = nil
+        end
+        local pagedata = rawget(data,realpage)
+        ctx_testcase(pagedata and pagedata[name])
+    end
+}