mtcontrib/colddb
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clarify

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This commit is contained in:
uleelx 2015-04-07 20:20:45 +08:00
parent 4a5bb816e4
commit 1394c595ac
1 changed files with 93 additions and 23 deletions
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116
cli.lua
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@ -24,17 +24,25 @@ end
local db = assert(flatdb("./db"))
local page = "0"
local function handle(input)
local c = split(input, " ", 2)
local cmd, key, value = string.upper(c[1]), c[2], c[3]
if cmd == "SAVE" then
local COMMANDS = {
SAVE = function(key)
print(db:save(key) and "OK" or "ERROR")
elseif cmd == "TOUCH" then
end,
TOUCH = function(key)
if not key then
print("USAGE: TOUCH page")
return
end
if not db[key] then
db[key] = {}
end
print("OK")
elseif cmd == "SELECT" then
end,
SELECT = function(key)
if not key then
print("USAGE: SELECT page")
return
end
if tonumber(key) and tonumber(key) < 16 then
if not db[key] then
db[key] = {}
@ -44,51 +52,103 @@ local function handle(input)
page = key
print("OK")
else
print("ERROR")
print("ERROR: database not found, try using 'TOUCH' command first")
end
end,
GET = function(key)
if not key then
print("USAGE: GET key")
return
end
elseif cmd == "GET" then
print(pp.format(db[page][key]))
elseif cmd == "SET" then
end,
SET = function(key, value)
if not key then
print("USAGE: SET key value")
return
end
local ok, tmp = pcall(load("return "..tostring(value), "=(load)", "t", db))
db[page][key] = ok and tmp or value
print("OK")
elseif cmd == "INCR" then
end,
INCR = function(key)
if not key then
print("USAGE: INCR key")
return
end
if not db[page][key] then
db[page][key] = 0
end
db[page][key] = db[page][key] + 1
print("OK")
elseif cmd == "DECR" then
end,
DECR = function(key)
if not key then
print("USAGE: DECR key")
return
end
if not db[page][key] then
db[page][key] = 0
end
db[page][key] = db[page][key] - 1
print("OK")
elseif cmd == "RPUSH" then
end,
RPUSH = function(key, value)
if not key then
print("USAGE: RPUSH list value")
return
end
if not db[page][key] then
db[page][key] = {}
end
table.insert(db[page][key], value)
print(#db[page][key])
elseif cmd == "LPUSH" then
end,
LPUSH = function(key, value)
if not key then
print("USAGE: LPUSH list value")
return
end
if not db[page][key] then
db[page][key] = {}
end
table.insert(db[page][key], 1, value)
print(#db[page][key])
elseif cmd == "RPOP" then
if not db[page][key] then
db[page][key] = {}
end,
RPOP = function(key)
if not key then
print("USAGE: RPOP list")
return
end
print(table.remove(db[page][key], value))
elseif cmd == "LPOP" then
if not db[page][key] then
db[page][key] = {}
if db[page][key] then
print(table.remove(db[page][key]))
else
print("nil")
end
end,
LPOP = function(key)
if not key then
print("USAGE: LPOP list")
return
end
if db[page][key] then
print(table.remove(db[page][key], 1))
else
print("nil")
end
end,
LLEN = function(key)
if not key then
print("USAGE: LLEN list")
return
end
print(table.remove(db[page][key], 1))
elseif cmd == "LLEN" then
print(db[page][key] and #db[page][key] or 0)
elseif cmd == "LINDEX" then
end,
LINDEX = function(key, value)
if not key and not value then
print("USAGE: LINDEX list index")
return
end
if db[page][key] then
local i = tonumber(value)
if i < 0 then i = i + #db[page][key] end
@ -98,6 +158,16 @@ local function handle(input)
print("nil")
end
end
}
local function handle(input)
local c = split(input, " ", 2)
local cmd, key, value = string.upper(c[1]), c[2], c[3]
if COMMANDS[cmd] then
COMMANDS[cmd](key, value)
else
print("ERROR: command not found")
end
end
local function main()