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Your IP : 3.17.141.193
// https://www.postgresql.org/docs/current/protocol-message-formats.html
import BufferList from './buffer-list'
const buffers = {
readyForQuery: function () {
return new BufferList().add(Buffer.from('I')).join(true, 'Z')
},
authenticationOk: function () {
return new BufferList().addInt32(0).join(true, 'R')
},
authenticationCleartextPassword: function () {
return new BufferList().addInt32(3).join(true, 'R')
},
authenticationMD5Password: function () {
return new BufferList()
.addInt32(5)
.add(Buffer.from([1, 2, 3, 4]))
.join(true, 'R')
},
authenticationSASL: function () {
return new BufferList().addInt32(10).addCString('SCRAM-SHA-256').addCString('').join(true, 'R')
},
authenticationSASLContinue: function () {
return new BufferList().addInt32(11).addString('data').join(true, 'R')
},
authenticationSASLFinal: function () {
return new BufferList().addInt32(12).addString('data').join(true, 'R')
},
parameterStatus: function (name: string, value: string) {
return new BufferList().addCString(name).addCString(value).join(true, 'S')
},
backendKeyData: function (processID: number, secretKey: number) {
return new BufferList().addInt32(processID).addInt32(secretKey).join(true, 'K')
},
commandComplete: function (string: string) {
return new BufferList().addCString(string).join(true, 'C')
},
rowDescription: function (fields: any[]) {
fields = fields || []
var buf = new BufferList()
buf.addInt16(fields.length)
fields.forEach(function (field) {
buf
.addCString(field.name)
.addInt32(field.tableID || 0)
.addInt16(field.attributeNumber || 0)
.addInt32(field.dataTypeID || 0)
.addInt16(field.dataTypeSize || 0)
.addInt32(field.typeModifier || 0)
.addInt16(field.formatCode || 0)
})
return buf.join(true, 'T')
},
parameterDescription: function (dataTypeIDs: number[]) {
dataTypeIDs = dataTypeIDs || []
var buf = new BufferList()
buf.addInt16(dataTypeIDs.length)
dataTypeIDs.forEach(function (dataTypeID) {
buf.addInt32(dataTypeID)
})
return buf.join(true, 't')
},
dataRow: function (columns: any[]) {
columns = columns || []
var buf = new BufferList()
buf.addInt16(columns.length)
columns.forEach(function (col) {
if (col == null) {
buf.addInt32(-1)
} else {
var strBuf = Buffer.from(col, 'utf8')
buf.addInt32(strBuf.length)
buf.add(strBuf)
}
})
return buf.join(true, 'D')
},
error: function (fields: any) {
return buffers.errorOrNotice(fields).join(true, 'E')
},
notice: function (fields: any) {
return buffers.errorOrNotice(fields).join(true, 'N')
},
errorOrNotice: function (fields: any) {
fields = fields || []
var buf = new BufferList()
fields.forEach(function (field: any) {
buf.addChar(field.type)
buf.addCString(field.value)
})
return buf.add(Buffer.from([0])) // terminator
},
parseComplete: function () {
return new BufferList().join(true, '1')
},
bindComplete: function () {
return new BufferList().join(true, '2')
},
notification: function (id: number, channel: string, payload: string) {
return new BufferList().addInt32(id).addCString(channel).addCString(payload).join(true, 'A')
},
emptyQuery: function () {
return new BufferList().join(true, 'I')
},
portalSuspended: function () {
return new BufferList().join(true, 's')
},
closeComplete: function () {
return new BufferList().join(true, '3')
},
copyIn: function (cols: number) {
const list = new BufferList()
// text mode
.addByte(0)
// column count
.addInt16(cols)
for (let i = 0; i < cols; i++) {
list.addInt16(i)
}
return list.join(true, 'G')
},
copyOut: function (cols: number) {
const list = new BufferList()
// text mode
.addByte(0)
// column count
.addInt16(cols)
for (let i = 0; i < cols; i++) {
list.addInt16(i)
}
return list.join(true, 'H')
},
copyData: function (bytes: Buffer) {
return new BufferList().add(bytes).join(true, 'd')
},
copyDone: function () {
return new BufferList().join(true, 'c')
},
}
export default buffers