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Replace with up to date postgres-pure driver.
This is the one extracted from node-persistence and made to run on heroku's system.
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/* | ||
Copyright (c) 2010 Tim Caswell <tim@creationix.com> | ||
Permission is hereby granted, free of charge, to any person obtaining a copy | ||
of this software and associated documentation files (the "Software"), to deal | ||
in the Software without restriction, including without limitation the rights | ||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
copies of the Software, and to permit persons to whom the Software is | ||
furnished to do so, subject to the following conditions: | ||
The above copyright notice and this permission notice shall be included in all | ||
copies or substantial portions of the Software. | ||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
SOFTWARE. | ||
*/ | ||
|
||
var Buffer = module.exports = require('buffer').Buffer; | ||
var proto = Buffer.prototype; | ||
|
||
// Cleans the buffer to be all zeroes | ||
proto.zeroOut = function zeroOut() { | ||
for (var i = 0, l = this.length; i < l; i++) { | ||
this[i] = 0; | ||
} | ||
}; | ||
|
||
// Writes a 32 bit integer at offset | ||
proto.int32Write = function int32Write(number, offset) { | ||
offset = offset || 0; | ||
var unsigned = (number < 0) ? (number + 0x100000000) : number; | ||
this[offset] = Math.floor(unsigned / 0xffffff); | ||
unsigned &= 0xffffff; | ||
this[offset + 1] = Math.floor(unsigned / 0xffff); | ||
unsigned &= 0xffff; | ||
this[offset + 2] = Math.floor(unsigned / 0xff); | ||
unsigned &= 0xff; | ||
this[offset + 3] = Math.floor(unsigned); | ||
}; | ||
|
||
// Writes a 16 bit integer at offset | ||
proto.int16Write = function int16Write(number, offset) { | ||
offset = offset || 0; | ||
var unsigned = (number < 0) ? (number + 0x10000) : number; | ||
this[offset] = Math.floor(unsigned / 0xff); | ||
unsigned &= 0xff; | ||
this[offset + 1] = Math.floor(unsigned); | ||
} | ||
|
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// Reads a 32 bit integer from offset | ||
proto.int32Read = function int32Read(offset) { | ||
offset = offset || 0; | ||
var unsigned = this[offset] * 0x1000000 + | ||
this[offset + 1] * 0x10000 + | ||
this[offset + 2] * 0x100 + | ||
this[offset + 3]; | ||
return (unsigned & 0x80000000) ? (unsigned - 0x100000000) : unsigned | ||
}; | ||
|
||
// Reads a 32 bit integer from offset | ||
proto.int16Read = function int16Read(offset) { | ||
offset = offset || 0; | ||
var unsigned = this[offset] * 0x100 + | ||
this[offset + 1]; | ||
return (unsigned & 0x8000) ? (unsigned - 0x10000) : unsigned | ||
}; | ||
|
||
Buffer.fromString = function fromString(string) { | ||
var b = new Buffer(Buffer.byteLength(string)); | ||
b.write(string, 'utf8'); | ||
return b; | ||
} | ||
|
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Buffer.makeWriter = function makeWriter() { | ||
var data = []; | ||
var writer; | ||
var push = { | ||
int32: function pushInt32(number) { | ||
var b = new Buffer(4); | ||
b.int32Write(number); | ||
data.push(b); | ||
return writer; | ||
}, | ||
int16: function pushInt16(number) { | ||
var b = new Buffer(2); | ||
b.int16Write(number); | ||
data.push(b); | ||
return writer; | ||
}, | ||
string: function pushString(string) { | ||
data.push(Buffer.fromString(string)); | ||
return writer; | ||
}, | ||
cstring: function pushCstring(string) { | ||
data.push(Buffer.fromString(string + "\0")); | ||
return writer; | ||
}, | ||
multicstring: function pushMulticstring(fields) { | ||
data.push(Buffer.fromString(fields.join("\0") + "\0\0")); | ||
return writer; | ||
}, | ||
hash: function pushHash(hash) { | ||
var keys = Object.keys(hash); | ||
var pairs = []; | ||
for (var i = 0, l = keys.length; i < l; i++) { | ||
var key = keys[i]; | ||
pairs.push(key + "\0" + hash[key] + "\0"); | ||
} | ||
data.push(Buffer.fromString(pairs.join("") + "\0")); | ||
return writer; | ||
} | ||
}; | ||
writer = { | ||
data: data, | ||
push: push, | ||
|
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// Convert an array of buffers into a single buffer using memcopy | ||
toBuffer: function toBuffer() { | ||
var total = 0; | ||
var i, l = data.length; | ||
for (i = 0; i < l; i++) { | ||
total += data[i].length; | ||
} | ||
var b = new Buffer(total); | ||
var offset = 0; | ||
for (i = 0; i < l; i++) { | ||
data[i].copy(b, offset); | ||
offset += data[i].length; | ||
} | ||
return b; | ||
} | ||
}; | ||
return writer; | ||
} | ||
|
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proto.toReader = function toReader() { | ||
var offset = 0, length = this.length, buffer = this; | ||
return { | ||
empty: function empty() { | ||
return offset >= length; | ||
}, | ||
int32: function shiftInt32() { | ||
var number = buffer.int32Read(offset); | ||
offset += 4; | ||
return number; | ||
}, | ||
int16: function shiftInt16() { | ||
var number = buffer.int16Read(offset); | ||
offset += 2; | ||
return number; | ||
}, | ||
buffer: function shiftBuffer(length) { | ||
var b = buffer.slice(offset, offset + length); | ||
offset += length; | ||
return b; | ||
}, | ||
string: function shiftString(length) { | ||
var string = buffer.toString('utf8', offset, offset + length); | ||
offset += length; | ||
return string; | ||
}, | ||
cstring: function shiftCstring() { | ||
var end = offset; | ||
while (buffer[end] > 0 && end < length) { end++; } | ||
var string = buffer.toString('utf8', offset, end); | ||
offset = end + 1; | ||
return string; | ||
}, | ||
multicstring: function shiftMulticstring() { | ||
var fields = []; | ||
while (buffer[offset] > 0) { | ||
fields.push(this.cstring()); | ||
} | ||
offset++; | ||
return fields; | ||
}, | ||
hash: function shiftHash() { | ||
var hash = {}; | ||
while (buffer[offset] > 0) { | ||
hash[this.cstring()] = this.cstring(); | ||
} | ||
offset++; | ||
return hash; | ||
} | ||
} | ||
}; | ||
|
||
// Test It | ||
// var sys = require('sys'); | ||
// | ||
// var w = Buffer.makeWriter(); | ||
// w.push.int32(305419896); | ||
// w.push.int16(4660); | ||
// w.push.string("12345"); | ||
// w.push.cstring("Héllø Wø®l∂"); | ||
// w.push.multicstring(["Hello", "World"]); | ||
// w.push.hash({name: "Tim", age: "28"}); | ||
// w.push.int32(0x12345678); | ||
// w.push.int16(0x1234); | ||
// var b = w.toBuffer(); | ||
// // sys.p(b); | ||
// var r = b.toReader(); | ||
// sys.p([ | ||
// r.int32(), | ||
// r.int16(), | ||
// r.string(5), | ||
// r.cstring(), | ||
// r.multicstring(), | ||
// r.hash(), | ||
// r.int32(), | ||
// r.int16() | ||
// ]); | ||
// |
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