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--[[--
This module helps with retrieving version information.
]]
local Version = {}
--- Returns current KOReader git-rev.
-- @treturn string full KOReader git-rev such as `v2015.11-982-g704d4238`
function Version:getCurrentRevision()
if not self.rev then
local rev_file = io.open("git-rev", "r")
if rev_file then
self.rev = rev_file:read("*line")
rev_file:close()
end
-- sanity check in case `git describe` failed
if self.rev == "fatal: No names found, cannot describe anything." then
self.rev = nil
end
end
return self.rev
end
--- Returns normalized version of KOReader git-rev input string.
-- @string rev full KOReader git-rev such as `v2015.11-982-g704d4238`
-- @treturn int version in the form of a 10 digit number such as `2015110982`
-- @treturn string short git commit version hash such as `704d4238`
function Version:getNormalizedVersion(rev)
if not rev then return end
local year, month, point, revision = rev:match("v(%d%d%d%d)%.(%d%d)%.?(%d?%d?)-?(%d*)")
year = tonumber(year)
month = tonumber(month)
point = tonumber(point)
revision = tonumber(revision)
local commit = rev:match("-%d*-g(%x*)[%d_%-]*")
-- NOTE: * 10000 to handle at most 9999 commits since last tag ;).
return ((year or 0) * 100 + (month or 0)) * 1000000 + (point or 0) * 10000 + (revision or 0), commit
end
--- Returns current version of KOReader.
-- @treturn int version in the form of a 10 digit number such as `2015110982`
-- @treturn string short git commit version hash such as `704d4238`
-- @see getNormalizedVersion
function Version:getNormalizedCurrentVersion()
if not self.version or not self.commit then
self.version, self.commit = self:getNormalizedVersion(self:getCurrentRevision())
end
return self.version, self.commit
end
--- Returns current version of KOReader, in short form.
-- @treturn string version, without the git details (i.e., at most YYYY.MM.P-R)
function Version:getShortVersion()
if not self.short then
local rev = self:getCurrentRevision()
local year, month, point, revision = rev:match("v(%d%d%d%d)%.(%d%d)%.?(%d?%d?)-?(%d*)")
self.short = year .. "." .. month
if point and point ~= "" then
self.short = self.short .. "." .. point
end
if revision and revision ~= "" then
self.short = self.short .. "-" .. revision
end
end
return self.short
end
--- Returns the release date of the current version of KOReader, YYYYmmdd, in UTC.
--- Technically closer to the build date, but close enough where official builds are concerned ;).
-- @treturn int date
function Version:getBuildDate()
if not self.date then
local lfs = require("libs/libkoreader-lfs")
local mtime = lfs.attributes("git-rev", "modification")
if mtime then
local ts = os.date("!%Y%m%d", mtime)
self.date = tonumber(ts) or 0
else
-- No git-rev file?
self.date = 0
end
end
return self.date
end
return Version