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--!A cross-platform build utility based on Lua
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
-- Copyright (C) 2015-present, Xmake Open Source Community.
--
-- @author ruki
-- @file hash.lua
--
-- define module: hash
local hash = hash or {}
-- load modules
local io = require("base/io")
local utils = require("base/utils")
local bytes = require("base/bytes")
local libc = require("base/libc")
-- save metatable and builtin functions
hash._md5 = hash._md5 or hash.md5
hash._sha = hash._sha or hash.sha
hash._xxhash = hash._xxhash or hash.xxhash
hash._rand32 = hash._rand32 or hash.rand32
hash._rand64 = hash._rand64 or hash.rand64
hash._rand128 = hash._rand128 or hash.rand128
-- generate md5 hash from the given file or data
--
-- @param file_or_data the file path, data string, or bytes object
-- @return the hash hex string, or nil and error info
--
function hash.md5(file_or_data)
local hashstr, errors
if bytes.instance_of(file_or_data) then
local datasize = file_or_data:size()
local dataaddr = file_or_data:caddr()
hashstr, errors = hash._md5(dataaddr, datasize)
else
hashstr, errors = hash._md5(file_or_data)
end
return hashstr, errors
end
-- generate sha1 hash from the given file or data
--
-- @param file_or_data the file path, data string, or bytes object
-- @return the hash hex string, or nil and error info
--
function hash.sha1(file_or_data)
local hashstr, errors
if bytes.instance_of(file_or_data) then
local datasize = file_or_data:size()
local dataaddr = file_or_data:caddr()
hashstr, errors = hash._sha(160, dataaddr, datasize)
else
hashstr, errors = hash._sha(160, file_or_data)
end
return hashstr, errors
end
-- generate sha256 hash from the given file or data
--
-- @param file_or_data the file path, data string, or bytes object
-- @return the hash hex string, or nil and error info
--
function hash.sha256(file_or_data)
local hashstr, errors
if bytes.instance_of(file_or_data) then
local datasize = file_or_data:size()
local dataaddr = file_or_data:caddr()
hashstr, errors = hash._sha(256, dataaddr, datasize)
else
hashstr, errors = hash._sha(256, file_or_data)
end
return hashstr, errors
end
-- generate uuid, e.g "91E8ECF1-417F-4EDF-A574-E22D7D8D204A"
--
-- @param str the seed string (optional, random if nil)
-- @return the uuid string
--
function hash.uuid(str)
return hash.uuid4(str)
end
-- generate xxhash32 from the given file or data
--
-- @param file_or_data the file path, data string, or bytes object
-- @return the hash hex string, or nil and error info
--
function hash.xxhash32(file_or_data)
local hashstr, errors
if bytes.instance_of(file_or_data) then
local datasize = file_or_data:size()
local dataaddr = file_or_data:caddr()
hashstr, errors = hash._xxhash(32, dataaddr, datasize)
else
hashstr, errors = hash._xxhash(32, file_or_data)
end
return hashstr, errors
end
-- generate xxhash64 from the given file or data
--
-- @param file_or_data the file path, data string, or bytes object
-- @return the hash hex string, or nil and error info
--
function hash.xxhash64(file_or_data)
local hashstr, errors
if bytes.instance_of(file_or_data) then
local datasize = file_or_data:size()
local dataaddr = file_or_data:caddr()
hashstr, errors = hash._xxhash(64, dataaddr, datasize)
else
hashstr, errors = hash._xxhash(64, file_or_data)
end
return hashstr, errors
end
-- generate xxhash128 from the given file or data
--
-- @param file_or_data the file path, data string, or bytes object
-- @return the hash hex string, or nil and error info
--
function hash.xxhash128(file_or_data)
local hashstr, errors
if bytes.instance_of(file_or_data) then
local datasize = file_or_data:size()
local dataaddr = file_or_data:caddr()
hashstr, errors = hash._xxhash(128, dataaddr, datasize)
else
hashstr, errors = hash._xxhash(128, file_or_data)
end
return hashstr, errors
end
-- generate hash32 from string, e.g. "91e8ecf1"
--
-- @param str the input string
-- @return the 32-bit hash hex string
--
function hash.strhash32(str)
if hash._rand32 then
local data = libc.ptraddr(libc.dataptr(str))
local size = #str
return hash._xxhash(32, data, size)
else
-- we need to be compatible with the old binary core (<= v3.0.3)
return hash.uuid4(str):split("-", {plain = true})[1]:lower()
end
end
-- generate hash64 from string, e.g. "91e8ecf191e8ecf1"
--
-- @param str the input string
-- @return the 64-bit hash hex string
--
function hash.strhash64(str)
local data = libc.ptraddr(libc.dataptr(str))
local size = #str
return hash._xxhash(64, data, size)
end
-- generate hash128 from string, e.g. "91e8ecf1417f4edfa574e22d7d8d204a"
--
-- @param str the input string
-- @return the 128-bit hash hex string
--
function hash.strhash128(str)
local data = libc.ptraddr(libc.dataptr(str))
local size = #str
return hash._xxhash(128, data, size)
end
-- generate random 32-bit hash
--
-- @return the random hash hex string
-- @note it is easy to trigger hash conflicts
--
function hash.rand32()
if hash._rand32 then
return hash._rand32()
else
return hash.strhash32(tostring(math.random()))
end
end
-- generate random64 hash
function hash.rand64()
if hash._rand64 then
return hash._rand64()
else
return hash.strhash64(tostring(math.random()))
end
end
-- generate random128 hash
function hash.rand128()
if hash._rand128 then
return hash._rand128()
else
return hash.strhash128(tostring(math.random()))
end
end
-- return module: hash
return hash
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