forked from qwerty472123/wxappUnpacker
-
Notifications
You must be signed in to change notification settings - Fork 2
/
wuWxss.js
196 lines (196 loc) · 7.24 KB
/
wuWxss.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
const wu=require("./wuLib.js");
const path=require("path");
const fs=require("fs");
const {VM}=require('vm2');
const cssbeautify=require('cssbeautify');
const csstree=require('css-tree');
function doWxss(dir,cb){
function GwxCfg(){}
GwxCfg.prototype={$gwx(){}};
for(let i=0;i<300;i++)GwxCfg.prototype["$gwx"+i]=GwxCfg.prototype.$gwx;
let runList={},pureData={},result={},actualPure={},importCnt={},frameName="",onlyTest=true,blockCss=[];//custom block css file which won't be imported by others.(no extension name)
function cssRebuild(data){//need to bind this as {cssFile:__name__} before call
let cssFile;
function statistic(data){
function addStat(id){
if(!importCnt[id])importCnt[id]=1,statistic(pureData[id]);
else ++importCnt[id];
}
if(typeof data==="number")return addStat(data);
for(let content of data)if(typeof content==="object"&&content[0]==2)addStat(content[1]);
}
function makeup(data){
var isPure=typeof data==="number";
if(onlyTest){
statistic(data);
if(!isPure){
if(data.length==1&&data[0][0]==2)data=data[0][1];
else return "";
}
if(!actualPure[data]&&!blockCss.includes(wu.changeExt(wu.toDir(cssFile,frameName),""))){
console.log("Regard "+cssFile+" as pure import file.");
actualPure[data]=cssFile;
}
return "";
}
let res=[],attach="";
if(isPure&&actualPure[data]!=cssFile){
if(actualPure[data])return '@import "'+wu.changeExt(wu.toDir(actualPure[data],cssFile),".wxss")+'";\n';
else{
res.push("/*! Import by _C["+data+"], whose real path we cannot found. */");
attach="/*! Import end */";
}
}
let exactData=isPure?pureData[data]:data;
for(let content of exactData)
if(typeof content==="object"){
switch(content[0]){
case 0://rpx
res.push(content[1]+"rpx");
break;
case 1://add suffix, ignore it for restoring correct!
break;
case 2://import
res.push(makeup(content[1]));
break;
}
}else res.push(content);
return res.join("")+attach;
}
return ()=>{
cssFile=this.cssFile;
if(!result[cssFile])result[cssFile]="";
result[cssFile]+=makeup(data);
};
}
function runVM(name,code){
let wxAppCode={},handle={cssFile:name};
let vm=new VM({sandbox:Object.assign(new GwxCfg(),{__wxAppCode__:wxAppCode,setCssToHead:cssRebuild.bind(handle)})});
vm.run(code);
for(let name in wxAppCode)if(name.endsWith(".wxss")){
handle.cssFile=path.resolve(frameName,"..",name);
wxAppCode[name]();
}
}
function preRun(dir,frameFile,mainCode,files,cb){
wu.addIO(cb);
runList[path.resolve(dir,"./app.wxss")]=mainCode;
for(let name of files)if(name!=frameFile){
wu.get(name,code=>{
code=code.slice(0,code.indexOf("\n"));
if(code.indexOf("setCssToHead")>-1)runList[name]=code.slice(code.indexOf("setCssToHead"));
});
}
}
function runOnce(){
for(let name in runList)runVM(name,runList[name]);
}
function transformCss(style){
let ast=csstree.parse(style);
csstree.walk(ast,function(node){
if(node.type=="Comment"){//Change the comment because the limit of css-tree
node.type="Raw";
node.value="\n/*"+node.value+"*/\n";
}
if(node.type=="TypeSelector"){
if(node.name.startsWith("wx-"))node.name=node.name.slice(3);
else if(node.name=="body")node.name="page";
}
if(node.children){
const removeType=["webkit","moz","ms","o"];
let list={};
node.children.each((son,item)=>{
if(son.type=="Declaration"){
if(list[son.property]){
let a=item,b=list[son.property],x=son,y=b.data,ans=null;
if(x.value.type=='Raw'&&x.value.value.startsWith("progid:DXImageTransform")){
node.children.remove(a);
ans=b;
}else if(y.value.type=='Raw'&&y.value.value.startsWith("progid:DXImageTransform")){
node.children.remove(b);
ans=a;
}else{
let xValue=x.value.children&&x.value.children.head&&x.value.children.head.data.name,yValue=y.value.children&&y.value.children.head&&y.value.children.head.data.name;
if(xValue&&yValue)for(let type of removeType)if(xValue==`-${type}-${yValue}`){
node.children.remove(a);
ans=b;
break;
}else if(yValue==`-${type}-${xValue}`){
node.children.remove(b);
ans=a;
break;
}else{
let mValue=`-${type}-`;
if(xValue.startsWith(mValue))xValue=xValue.slice(mValue.length);
if(yValue.startsWith(mValue))yValue=yValue.slice(mValue.length);
}
if(ans===null)ans=b;
}
list[son.property]=ans;
}else list[son.property]=item;
}
});
for(let name in list)if(!name.startsWith('-'))
for(let type of removeType){
let fullName=`-${type}-${name}`;
if(list[fullName]){
node.children.remove(list[fullName]);
delete list[fullName];
}
}
}
});
return cssbeautify(csstree.generate(ast),{indent:' ',autosemicolon:true});
}
wu.scanDirByExt(dir,".html",files=>{
let frameFile="";
if(fs.existsSync(path.resolve(dir,"page-frame.html")))
frameFile=path.resolve(dir,"page-frame.html");
else if(fs.existsSync(path.resolve(dir,"app-wxss.js")))
frameFile=path.resolve(dir,"app-wxss.js");
else if(fs.existsSync(path.resolve(dir,"page-frame.js")))
frameFile=path.resolve(dir,"page-frame.js");
else throw Error("page-frame-like file is not found in the package by auto.");
wu.get(frameFile,code=>{
code=code.slice(code.indexOf('var setCssToHead = function(file, _xcInvalid'));
code=code.slice(code.indexOf('\nvar _C= ')+1);
let oriCode=code;
code=code.slice(0,code.indexOf('\n'));
let vm=new VM({sandbox:{}});
pureData=vm.run(code+"\n_C");
let mainCode=oriCode.slice(oriCode.indexOf("setCssToHead"),oriCode.lastIndexOf(";var __pageFrameEndTime__"));
console.log("Guess wxss(first turn)...");
preRun(dir,frameFile,mainCode,files,()=>{
frameName=frameFile;
onlyTest=true;
runOnce();
onlyTest=false;
console.log("Import count info: %j",importCnt);
for(let id in pureData)if(!actualPure[id]){
if(!importCnt[id])importCnt[id]=0;
if(importCnt[id]<=1){
console.log("Cannot find pure import for _C["+id+"] which is only imported "+importCnt[id]+" times. Let importing become copying.");
}else{
let newFile=path.resolve(dir,"__wuBaseWxss__/"+id+".wxss");
console.log("Cannot find pure import for _C["+id+"], force to save it in ("+newFile+").");
id=Number.parseInt(id);
actualPure[id]=newFile;
cssRebuild.call({cssFile:newFile},id)();
}
}
console.log("Guess wxss(first turn) done.\nGenerate wxss(second turn)...");
runOnce()
console.log("Generate wxss(second turn) done.\nSave wxss...");
for(let name in result)wu.save(wu.changeExt(name,".wxss"),transformCss(result[name]));
let delFiles={};
for(let name of files)delFiles[name]=8;
delFiles[frameFile]=4;
cb(delFiles);
});
});
});
}
module.exports={doWxss:doWxss};
if(require.main===module){
wu.commandExecute(doWxss,"Restore wxss files.\n\n<dirs...>\n\n<dirs...> restore wxss file from a unpacked directory(Have page-frame.html (or app-wxss.js) and other html file).");
}