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@ -2,6 +2,8 @@
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This module helps with retrieving version information.
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]]
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local VERSION_LOG_FILE = "version.log"
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local Version = {}
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--- Returns current KOReader git-rev.
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@ -86,4 +88,47 @@ function Version:getBuildDate()
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return self.date
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end
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--- Get last line in `VERSION_LOG_FILE`.
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-- @treturn last line in `VERSION_LOG_FILE` or an empty string
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function Version:getLastLogLine()
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local log_file = io.open(VERSION_LOG_FILE, "r")
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local last_log_line
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if log_file then
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for line in log_file:lines() do
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last_log_line = line
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end
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log_file:close()
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end
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return last_log_line or ""
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end
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--- Append text to a `VERSION_LOG_FILE`.
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-- @string text text to be appended
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function Version:appendToLogFile(text)
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local log_file = io.open(VERSION_LOG_FILE, "a")
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if not log_file then
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return
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end
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log_file:write(text, "\n")
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log_file:close()
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return true
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end
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--- Updates `VERSION_LOG_FILE` and keep the file small
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-- @string model device model (may contain spaces)
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function Version:updateVersionLog(current_model)
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local last_line = Version:getLastLogLine()
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local dummy, dummy, last_version, last_model = last_line:match("(.-), (.-), (.-), (.-)$")
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self.last_version = last_version or "last version not found"
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self.last_model = last_model or "last model not found"
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if self.rev ~= last_version or current_model ~= last_model then
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-- Appends KOReader git-rev, model and current date to the `VERSION_LOG_FILE`
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-- in the format 'YYYY-mm-dd, HH:MM:SS, git-rev, model'
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self:appendToLogFile(os.date("%Y-%m-%d, %X, ") .. self.rev .. ", " .. current_model)
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end
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end
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return Version
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