// xmlReadFile
func ReadFile(filename string, encoding string, options ParserOption) *Document {
ptrf := C.CString(filename)
defer C.free_string(ptrf)
ptre := C.CString(encoding)
defer C.free_string(ptre)
doc := C.xmlReadFile(ptrf, ptre, C.int(options))
return makeDoc(doc)
}
// ReadFile loads an XmlDocument from a filename. The encoding declared in the document will be
// used as the input encoding. If no encoding is declared, the library will use the alogrithm
// in the XML standard to determine if the document is encoded with UTF-8 or UTF-16.
func ReadFile(filename string, options ParseOption) (doc *XmlDocument, err error) {
// verify the file exists and can be read before we invoke C API
_, err = os.Stat(filename)
if err != nil {
return
}
dataBytes := GetCString([]byte(filename))
dataPtr := unsafe.Pointer(&dataBytes[0])
var docPtr *C.xmlDoc
docPtr = C.xmlReadFile((*C.char)(dataPtr), nil, C.int(options))
if docPtr == nil {
err = ERR_FAILED_TO_PARSE_XML
} else {
var encoding []byte
// capture the detected input encoding
p := docPtr.encoding
if p != nil {
encoding = []byte(C.GoString((*C.char)(unsafe.Pointer(p))))
}
doc = NewDocument(unsafe.Pointer(docPtr), 0, encoding, DefaultEncodingBytes)
}
return
}