utf-8 to gbk is error

[jincdream]

fs.readFile(path,{encoding:'utf-8'},function(err,data){
buf = iconv.encode(data,'gbk');
fs.writeFile(outName,buf,function(){
callback();
});
});

input: var s = 1;
ouput : ?var s = 1;

A '?' is always there.

[jincdream]

now I use this way to solve:
fs.readFile(path,{encoding:'utf-8'},function(err,data){
buf = iconv.encode(data,'gb2312');
console.log();
fs.writeFile(outName,buf,function(){
iconv.extendNodeEncodings();
var str = fs.readFileSync(outName,'gb2312');
str = str.substring(1);
fs.writeFileSync(outName,str,'gb2312');
iconv.undoExtendNodeEncodings();
});
});

[ashtuchkin]

Could you post:

• the contents of the file you convert
• contents of 'data' variable in your first script?
• version of node and iconv-lite you use

[ashtuchkin]

Although I probably know what the problem is. The file you read has a BOM character in the beginning. Unfortunately, Node.js keeps it by default (see nodejs/node-v0.x-archive#1918). Then, GBK encoding has no code for the BOM character, so iconv-lite replaces it by '?'.

Solutions:

1. Add data = data.replace(/^\uFEFF/, ''); before encoding.
2. Use 'strip-bom' module for more readability.

Let me know if it helps.

[jincdream]

"version": "0.4.4","GBK encoding has no code for the BOM character";
It's helpful , thank u.