Xbase++

Convert a File's Character Encoding from UTF-8 to UFT-8-BOM

See more HTML-to-XML/Text Examples

To add a utf-8 BOM to a file is just a matter of prepending these 3 bytes to the file: 0xEF 0xBB 0xBF.

This may be difficult in some programming languages, or it may be trivial in either. Therefore, the Chilkat solution you see here might be helpful, or in a language such as C++, the Chilkat solution isn't really necessary because it's easy to do yourself.

Xbase++

LOCAL nSuccess
LOCAL oCharset

nSuccess := 0

//  This example assumes the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

oCharset := CreateObject("Chilkat.Charset")

oCharset:FromCharset := "utf-8"
oCharset:ToCharset := "bom-utf-8"

nSuccess := oCharset:ConvertFile("qa_data/txt/helloWorld.txt", "qa_output/helloWorldBom.txt")
IF (nSuccess == 0)
    ? oCharset:LastErrorText
    oCharset:destroy()
    RETURN
ENDIF

? "Success."

oCharset:destroy()