feat: add simple baidu query api support

lua/Trans/query/baidu.lua

@@ -0,0 +1,49 @@
+local baidu     = require('Trans').conf.engine.baidu
+local appid     = baidu.appid
+local appPasswd = baidu.appPasswd
+local salt      = tostring(math.random(bit.rshift(1, 5)))
+local uri       = 'https://fanyi-api.baidu.com/api/trans/vip/translate'
+
+if appid == '' or appPasswd == '' then
+    error('请查看README, 实现在线翻译或者设置将在线翻译设置为false')
+end
+
+local ok, curl = pcall(require, 'plenary.curl')
+if not ok then
+    error('plenary not found')
+end
+
+local function get_field(word)
+    local to   = 'zh'
+    local tmp  = appid .. word .. salt .. appPasswd
+    local sign = require('Trans.util.md5').sumhexa(tmp)
+
+    return {
+        q     = word,
+        from  = 'auto',
+        to    = to,
+        appid = appid,
+        salt  = salt,
+        sign  = sign,
+    }
+end
+
+return function(word)
+    local query = get_field(word)
+    local output = curl.post(uri, {
+        data = query,
+        headers = {
+            content_type = "application/x-www-form-urlencoded",
+        }
+    })
+
+    if output.exit == 0 and output.status == 200 then
+        local res = vim.fn.json_decode(output.body)
+        if res and res.trans_result then
+            return {
+                word = word,
+                translation = res.trans_result[1].dst,
+            }
+        end
+    end
+end

lua/Trans/query/youdao.lua

@@ -0,0 +1,48 @@
+local youdao    = require("Trans").conf.engine.youdao
+local appKey    = youdao.appKey
+local appPasswd = youdao.appPasswd
+local uri       = 'https://openapi.youdao.com/api'
+local salt      = tostring(math.random(bit.rshift(1, 5)))
+
+
+local ok, curl = pcall(require, 'plenary.curl')
+if not ok then
+    error('plenary not found')
+end
+
+
+local function get_field(word)
+    local len     = #word
+    local curtime = tostring(os.time())
+    local input   = len > 20 and
+        word:sub(1, 10) .. len .. word:sub(-10) or word
+
+    -- sign=sha256(应用ID+input+salt+curtime+应用密钥)；
+    local hash = appKey .. input .. salt .. curtime .. appPasswd
+    local sign = vim.fn.sha256(hash)
+
+    return {
+        q        = word,
+        from     = 'auto',
+        to       = 'zh-CHS',
+        signType = 'v3',
+        appKey   = appKey,
+        salt     = salt,
+        curtime  = curtime,
+        sign     = sign,
+    }
+end
+
+return function(word)
+    -- return result
+    local field  = get_field(word)
+    local output = curl.post(uri, {
+        body = field,
+    })
+    if output.exit == 0 and output.status == 200 then
+        local result = vim.fn.json_decode(output.body)
+        if result and result.errorCode == 0 then
+            --- TODO :
+        end
+    end
+end