1 files changed, 58 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/context/base/font-log.lua b/Master/texmf-dist/tex/context/base/font-log.lua
new file mode 100644
index 00000000000..af0b2552fb4
--- /dev/null
+++ b/Master/texmf-dist/tex/context/base/font-log.lua
@@ -0,0 +1,58 @@
+if not modules then modules = { } end modules ['font-log'] = {
+    version   = 1.001,
+    comment   = "companion to font-ini.tex",
+    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files"
+}
+
+local next, format, lower, concat = next, string.format, string.lower, table.concat
+
+local trace_defining = false  trackers.register("fonts.defining", function(v) trace_defining = v end)
+
+fonts.logger = fonts.logger or { }
+
+--[[ldx--
+<p>The following functions are used for reporting about the fonts
+used. The message itself is not that useful in regular runs but since
+we now have several readers it may be handy to know what reader is
+used for which font.</p>
+--ldx]]--
+
+function fonts.logger.save(tfmtable,source,specification) -- save file name in spec here ! ! ! ! ! !
+    if tfmtable and specification and specification.specification then
+        local name = lower(specification.name)
+        if trace_defining and not fonts.used[name] then
+            logs.report("define font","registering %s as %s (used: %s)",file.basename(specification.name),source,file.basename(specification.filename))
+        end
+        specification.source = source
+        fonts.loaded[lower(specification.specification)] = specification
+     -- fonts.used[name] = source
+        fonts.used[lower(specification.filename or specification.name)] = source
+    end
+end
+
+function fonts.logger.report(complete)
+    local t = { }
+    for name, used in table.sortedpairs(fonts.used) do
+        if complete then
+            t[#t+1] = used .. "->" .. file.basename(name)
+        else
+            t[#t+1] = file.basename(name)
+        end
+    end
+    return t
+end
+
+function fonts.logger.format(name)
+    return fonts.used[name] or "unknown"
+end
+
+statistics.register("loaded fonts", function()
+    if next(fonts.used) then
+        local t = fonts.logger.report()
+        return (#t > 0 and format("%s files: %s",#t,concat(t,separator or " "))) or "none"
+    else
+        return nil
+    end
+end)