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Add support for uuid data type #19

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Add support for uuid data type #19

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18 changes: 18 additions & 0 deletions lib/pg_types.js
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,22 @@ const int8recv = function (buf) {
return buf.readBigInt64BE(0)
}

const uuidsend = function (buf, uuid, offset) {
if (!uuid) {
return Buffer.alloc(16) // Return empty buffer
}
const hexStr = uuid.replace(/-/g, '')
if (uuid.length != 36 || hexStr.length != 32) throw new Error(`Invalid UUID string: ${uuid}`)
return buf.put(Buffer.from(hexStr, 'hex'))
}

const uuidrecv = function (buffer, offset) {
if (buffer.length != 16) throw new Error(`Invalid buffer length for uuid: ${buffer.length}`)
if (buffer.equals(Buffer.alloc(16))) return null // If buffer is all zeros, return null
const str = buffer.toString('hex')
return `${str.slice(0, 8)}-${str.slice(8, 12)}-${str.slice(12, 16)}-${str.slice(16, 20)}-${str.slice(20)}`
}

// text
const textsend = function (buf, value) {
const tbuf = Buffer.from(value, 'utf-8')
Expand Down Expand Up @@ -208,6 +224,7 @@ const types = {
int2: { oid: 21, send: int2send, recv: int2recv },
int4: { oid: 23, send: int4send, recv: int4recv },
int8: { oid: 20, send: int8send, recv: int8recv },
uuid: { oid: 2950, send: uuidsend, recv: uuidrecv },
text: { oid: 25, send: textsend, recv: textrecv },
varchar: { oid: 1043, send: varcharsend, recv: varcharrecv },
json: { oid: 114, send: json_send, recv: json_recv },
Expand All @@ -220,6 +237,7 @@ const types = {
_int2: { oid: 1005, send: array_send.bind(null, 'int2'), recv: array_recv },
_int4: { oid: 1007, send: array_send.bind(null, 'int4'), recv: array_recv },
_int8: { oid: 1016, send: array_send.bind(null, 'int8'), recv: array_recv },
_uuid: { oid: 2951, send: array_send.bind(null, 'uuid'), recv: array_recv },
_text: { oid: 1009, send: array_send.bind(null, 'text'), recv: array_recv },
_varchar: { oid: 1015, send: array_send.bind(null, 'varchar'), recv: array_recv },
_json: { oid: 199, send: array_send.bind(null, 'json'), recv: array_recv },
Expand Down
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