How Can I Read Non-UTF-8 Encoded (e.g., GBK) Files in Go?

Non-UTF-8 Text File Reading in Go

Problem:

While the standard Go library assumes UTF-8 encoding for all text files, a need arises to read files encoded in other formats, such as GBK. How can this be achieved?

Solution:

Instead of using third-party packages that require cgo and wrap external libraries, Go offers a native solution through its sub-repositories. The golang.org/x/text/encoding package provides an interface for generic character encodings.

Specifically, the golang.org/x/text/encoding/simplifiedchinese sub-package offers implementations for GB18030, GBK, and HZ-GB2312 encodings. By using these encodings, developers can read and write files encoded in GBK seamlessly.

An example showcasing this process involves creating an io.Reader and an io.Writer that perform the encoding and decoding on the fly while reading or writing data. This allows for efficient and transparent handling of non-UTF-8 files.

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