1 files changed, 73 insertions, 0 deletions
diff --git a/extras/luacov/src/luacov/stats.lua b/extras/luacov/src/luacov/stats.lua
new file mode 100644
index 0000000..5390c75
--- /dev/null
+++ b/extras/luacov/src/luacov/stats.lua
@@ -0,0 +1,73 @@
+
+local M = {}
+
+local statsfile = "luacov.stats.out"
+local stats
+
+function M.load()
+   local data, most_hits = {}, 0
+   stats = io.open(statsfile, "r")
+   if not stats then
+      return data
+   end
+   while true do
+      local nlines = stats:read("*n")
+      if not nlines then
+         break
+      end
+      local skip = stats:read(1)
+      if skip ~= ":" then
+         break
+      end
+      local filename = stats:read("*l")
+      if not filename then
+         break
+      end
+      data[filename] = {
+         max=nlines
+      }
+      for i = 1, nlines do
+         local hits = stats:read("*n")
+         if not hits then
+            break
+         end
+         local skip = stats:read(1)
+         if skip ~= " " then
+            break
+         end
+         if hits > 0 then
+            data[filename][i] = hits
+            most_hits = math.max(most_hits, hits)
+         end
+      end
+   end
+   stats:close()
+   return data, most_hits
+end
+
+function M.start()
+   return io.open(statsfile, "w")
+end
+
+function M.stop(stats)
+   stats:close()
+end
+
+function M.save(data, stats)
+   stats:seek("set")
+   for filename, filedata in pairs(data) do
+      local max = filedata.max
+      stats:write(max, ":", filename, "\n")
+      for i = 1, max do
+         local hits = filedata[i]
+         if not hits then
+            hits = 0
+         end
+         stats:write(hits, " ")
+      end
+      stats:write("\n")
+   end
+   stats:flush()
+end
+
+return M