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|
-----------------------------------------------------
-- Manages the file with statistics (being) collected.
-- In general the module requires that its property `stats.statsfile`
-- has been set to the filename of the statsfile to create, load, etc.
-- @class module
-- @name luacov.stats
local stats = {}
-----------------------------------------------------
-- Loads the stats file.
-- @return table with data. The table maps filenames to stats tables.
-- Per-file tables map line numbers to hits or nils when there are no hits.
-- Additionally, .max field contains maximum line number
-- and .max_hits contains maximum number of hits in the file.
function stats.load()
local data = {}
local fd = io.open(stats.statsfile, "r")
if not fd then
return nil
end
while true do
local max = fd:read("*n")
if not max then
break
end
local skip = fd:read(1)
if skip ~= ":" then
break
end
local filename = fd:read("*l")
if not filename then
break
end
data[filename] = {
max = max,
max_hits = 0
}
for i = 1, max do
local hits = fd:read("*n")
if not hits then
break
end
local skip = fd:read(1)
if skip ~= " " then
break
end
if hits > 0 then
data[filename][i] = hits
data[filename].max_hits = math.max(data[filename].max_hits, hits)
end
end
end
fd:close()
return data
end
--------------------------------
-- Opens the statfile
-- @return filehandle
function stats.start()
return io.open(stats.statsfile, "w")
end
--------------------------------
-- Closes the statfile
-- @param fd filehandle to the statsfile
function stats.stop(fd)
fd:close()
end
--------------------------------
-- Saves data to the statfile
-- @param data data to store
-- @param fd filehandle where to store
function stats.save(data, fd)
fd:seek("set")
for filename, filedata in pairs(data) do
local max = filedata.max
fd:write(max, ":", filename, "\n")
for i = 1, max do
local hits = filedata[i]
if not hits then
hits = 0
end
fd:write(hits, " ")
end
fd:write("\n")
end
fd:flush()
end
return stats
|
