Node.js stringDecoder.write() Method
The stringDecoder.write() method is used to return a decoded string from the given Buffer, TypedArray or DataView. This method also ensures that any incomplete multibyte characters at the end of the buffer are omitted from the returned string. These characters are stored in an internal buffer for the next call to the stringDecoder.write() or stringDecoder.end() methods.
Syntax:
stringDecoder.write( buffer )
Parameters: This method accepts single parameter as mentioned above and described below:
- buffer: It is a Buffer, TypedArray or DataView that contains the bytes that have to be decoded.
Return Value: It returns a string which is decoded from the given buffer.
Below programs illustrate the stringDecoder.write() method in Node.js:
Example 1:
// Node.js program to demonstrate the // stringDecoder.write() Method // Import the string_decoder module// and get the StringDecoder class // using object destructuringconst { StringDecoder } = require("string_decoder"); // Create a new instance of the decoderconst decoder = new StringDecoder("utf-8"); const text_one = Buffer.from("GeeksforGeeks", "utf-8");let decoded_text = decoder.write(text_one);console.log("Decoded Text:", decoded_text); |
Output:
Decoded Text: GeeksforGeeks
Example 2:
// Node.js program to demonstrate the // stringDecoder.write() Method // Import the string_decoder module// and get the StringDecoder class // using object destructuringconst { StringDecoder } = require("string_decoder"); // Create a new instance of the decoderconst decoder = new StringDecoder("utf-8"); // Decoding text using hex from bufferconst hex_text = new Buffer.from( "4765656B73666F724765656B73", "hex");let decoded_hex_text = decoder.write(hex_text);console.log("Decoded Text Hex:", decoded_hex_text); // Decoding text using base64 from bufferconst base64_text = new Buffer.from( "R2Vla3Nmb3JHZWVrcw==", "base64");let decoded_base64_text = decoder.write(base64_text);console.log("Decoded Text Base64:", decoded_base64_text); // Decoding the cent symbol from bufferconst cent_symbol = Buffer.from([0xc2, 0xa2]);let cent_symbol_out = decoder.write(cent_symbol);console.log("Cent Symbol:", cent_symbol_out); |
Output:
Decoded Text Hex: GeeksforGeeks Decoded Text Base64: GeeksforGeeks Cent Symbol: ¢
Reference: https://nodejs.org/api/string_decoder.html#string_decoder_stringdecoder_write_buffer
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