1 files changed, 40 insertions, 0 deletions
diff --git a/tex/context/base/strc-lev.lua b/tex/context/base/strc-lev.lua
new file mode 100644
index 000000000..cacbc9788
--- /dev/null
+++ b/tex/context/base/strc-lev.lua
@@ -0,0 +1,40 @@
+if not modules then modules = { } end modules ['strc-lev'] = {
+    version   = 1.001,
+    comment   = "companion to strc-lev.mkiv",
+    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files"
+}
+
+local format = string.format
+local insert, remove = table.insert, table.remove
+
+local sections = structures.sections
+
+local level, levels, categories = 0, { }, { }
+
+function sections.defineautolevels(category,list)
+    levels[category] = utilities.parsers.settings_to_array(list)
+end
+
+function sections.startautolevel(category)
+    level = level + 1
+    local lc = levels[category]
+    if not lc or level > #lc then
+        context.nostartstructurehead { format("%s:%s",category,level) }
+    else
+        context.dostartstructurehead { lc[level] }
+    end
+    insert(categories,category)
+end
+
+function sections.stopautolevel()
+    local category = remove(categories)
+    local lc = levels[category]
+    if not lc or level > #lc then
+        context.nostopstructurehead { format("%s:%s",category,level) }
+    else
+        context.dostopstructurehead { lc[level] }
+    end
+    level = level - 1
+end