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Code Issues Releases Wiki Activity

Prevent overwriting of tube DB backup file

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This commit is contained in:
Jude Melton-Houghton 2022-08-12 21:06:59 -04:00
parent 23bf523c72
commit 659c9edac9
1 changed files with 7 additions and 1 deletions
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8
teleport_tube.lua
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@ -71,9 +71,15 @@ local function read_tube_db()
local file_content = file:read("*all") local file_content = file:read("*all")
io.close(file) io.close(file)
local backup_filename = filename .. ".bak"
pipeworks.logger("Moving teleport tube DB to mod storage from " .. filename) pipeworks.logger("Moving teleport tube DB to mod storage from " .. filename)
local backup_filename = filename .. ".bak"
pipeworks.logger("Backing up old file as " .. backup_filename) pipeworks.logger("Backing up old file as " .. backup_filename)
local backup_file = io.open(backup_filename, "r")
if backup_file then
io.close(backup_file)
error("Cannot back up teleport tube DB file " ..
"as a file already exists at " .. backup_filename)
end
assert(os.rename(filename, backup_filename)) assert(os.rename(filename, backup_filename))
if file_content and file_content ~= "" then if file_content and file_content ~= "" then