1 files changed, 57 insertions, 0 deletions
diff --git a/scripts/luacov_to_info.lua b/scripts/luacov_to_info.lua
new file mode 100755
index 0000000..b27ba99
--- /dev/null
+++ b/scripts/luacov_to_info.lua
@@ -0,0 +1,57 @@
+#!/usr/bin/env luajit
+-- SPDX-License-Identifier: GPL-3.0-or-later
+
+local luacov = require('luacov')
+local ReporterBase = require('luacov.reporter').ReporterBase
+local LcovReporter = setmetatable({}, ReporterBase)
+LcovReporter.__index = LcovReporter
+
+function LcovReporter:on_new_file(filename)
+	self.finfo = self.current_files[filename] or {name=filename, coverage={}}
+end
+
+function LcovReporter:on_mis_line(_, lineno, _)
+	self.finfo.coverage[lineno] = self.finfo.coverage[lineno] or 0
+end
+
+function LcovReporter:on_hit_line(_, lineno, _, hits)
+	self.finfo.coverage[lineno] = (self.finfo.coverage[lineno] or 0) + hits
+end
+
+function LcovReporter:on_end_file()
+	self.current_files[self.finfo.name] = self.finfo
+	self.finfo = nil
+end
+
+-- Write out results in lcov format
+local function write_lcov_info(files)
+	for fname, finfo in pairs(files) do
+		local instrumented, nonzero = 0, 0
+		print('TN:')
+		print(string.format('SF:%s', fname))
+		for i, hits in pairs(finfo.coverage) do
+			print(string.format('DA:%d,%d', i, hits))
+			instrumented = instrumented + 1
+			if hits > 0 then
+				nonzero = nonzero + 1
+			end
+		end
+		print(string.format('LH:%d', nonzero))
+		print(string.format('LF:%d', instrumented))
+		print('end_of_record')
+	end
+end
+
+-- Accumulate total coverage
+local all_files = {}
+for _, fname in ipairs(arg) do
+	local conf = luacov.load_config()
+	conf.statsfile = fname
+	local reporter = assert(LcovReporter:new(conf))
+	reporter.current_files = all_files
+	reporter:run()
+	reporter:close()
+end
+
+-- Write results
+write_lcov_info(all_files)