iconv - iconv Operation

Adapted Air780E/Air700E Air780EP Air601 Air101/Air103 Air105 ESP32C3 ESP32S3

Tip

This library has its own demo,click this link to view the demo example of iconv

iconv.open(tocode, fromcode)

Open the corresponding character encoding conversion function

Parameters

Incoming Value Type	Explanation
string	Interpretation: target encoding format value：gb2312/ucs2/ucs2be/utf8
string	Interpretation: source encoding format value：gb2312/ucs2/ucs2be/utf8

Return Value

return value type	explanation
userdata	The conversion handle of the encoding conversion function, which returns if it does not exist.nil

Examples

--unicode Big Endian Code Converts to utf8 Code
local iconv = iconv.open("utf8", "ucs2be")

---

iconv:iconv(inbuf)

Character encoding conversion

Parameters

Incoming Value Type	Explanation
string	Interpretation: String to be converted

Return Value

return value type	explanation
number	Interpretation: return the result after code conversion value: 0 success,-1 failure

Examples

--unicode Big Endian Code Converts to utf8 Code
function ucs2beToUtf8(ucs2s)
    local iconv = iconv.open("utf8", "ucs2be")
    return iconv:iconv(ucs2s)
end

---

iconv.open(tocode, fromcode)

Open the corresponding character encoding conversion function

Parameters

Incoming Value Type	Explanation
string	tocode$Target Encoding Format$gb2312/ucs2/ucs2be/utf8
string	fromcode$Source encoding format$gb2312/ucs2/ucs2be/utf8
return	table$cd$The conversion handle of the encoding conversion function.$

Return Value

None

Examples

--unicode Big Endian Code Converts to utf8 Code
local cd = iconv.open("utf8", "ucs2be")

---

cd:iconv(inbuf)

Character encoding conversion

Parameters

Incoming Value Type	Explanation
string	inbuf$Enter the string $for example:ucs2s
return	number$result$Returns the result after code conversion $0 succeeded,-1 failed

Return Value

None

Examples

--unicode Big Endian Code Converts to utf8 Code
function ucs2beToUtf8(ucs2s)
    local cd = iconv.open("utf8", "ucs2be")
    return cd:iconv(ucs2s)
end

---

iconv.close(cd)

Turn off character encoding conversion

Parameters

Incoming Value Type	Explanation
string	cd$iconv.open Handle returned$
return

Return Value

None

Examples

--Turn off character encoding conversion
local cd = iconv.open("utf8", "ucs2be")
iconv.close(cd)

---