PostgreSQL 二进制数据解析库

本库提供了解析PostgreSQL二进制格式的各种数据类型的功能，包括基本类型、一维数组和多维数组。
目的是避免在后端传输过程中不必要的 JSON 序列化/反序列化

此库供前端使用

// 后端需要配合libpg 的c++绑定
// 后端入参 resultFormat = 1 => binary
// length 后端可以直接从libpq返回中获取 1
//
// 后端传给前端 type@oid length@int32, Buffer字节
// 前端自己解析
//

多维数组支持

所有的 xxx_ary 函数已经内置支持多维数组解析。PostgreSQL在二进制表示中存储了数组的维度信息，我们的解析器会相应地重构出多维数组结构。

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``javascript
// 解析一个二维int4数组
const result = int4_ary(dataView, offset, length);

// 假设原始数据是一个2x3的数组[[1,2,3],[4,5,6]]
console.log(result); // 输出: [[1,2,3],[4,5,6]]

// 访问第二行第三列的元素
console.log(result[1][2]); // 输出: 6
``

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库支持所有PostgreSQL数据类型的多维数组，包括但不限于：

- 数值类型： int2_ary, int4_ary, int8_ary, float4_ary, float8_ary, numeric_ary
- 文本类型： char_n_ary, str_like_ary (包括text和varchar ,varchar(n),xml)
- 二进制类型： bytea_ary, bit_n_ary
- 日期时间类型：date_ary, time_ary, timestamp_ary
- JSON类型： json_ary, jsonb_ary
- 网络类型： inet_ary, cidr_ary, macaddr_ary
- 几何类型： point_ary, line_ary, polygon_ary ....等
- 范围类型： int4range_ary, daterange_ary ....等

无需额外的函数，这些函数已经能够正确处理任意维度的数组。

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{
_array: [Function (anonymous)] { reshapeArray: [Function: reshapeArray] },
_range: [Function (anonymous)],
bytea: [Function: bytea],
bytea_ary: [Function: bytea_ary],
bit_n: [Function: bit_n],
bit_n_ary: [Function: bit_n_ary],
char_n: [Function: char_n],
char_n_ary: [Function: char_n_ary],
str_like: [Function: str_like],
str_like_ary: [Function: str_like_ary],
jsonb: [Function: jsonb],
jsonb_ary: [Function: jsonb_ary],
json: [Function: json],
json_ary: [Function: json_ary],
xml: [Function: xml],
xml_ary: [Function: xml_ary],
bool: [Function: bool],
bool_ary: [Function: bool_ary],
int2: [Function: int2],
int2_ary: [Function: int2_ary],
int4: [Function: int4],
int4_ary: [Function: int4_ary],
int8: [Function: int8],
int8_ary: [Function: int8_ary],
float4: [Function: float4],
float4_ary: [Function: float4_ary],
float8: [Function: float8],
float8_ary: [Function: float8_ary],
numeric: [Function: numeric],
numeric_ary: [Function: numeric_ary],
date: [Function: date],
date_ary: [Function: date_ary],
time: [Function: time],
time_ary: [Function: time_ary],
timetz: [Function: timetz],
timetz_ary: [Function: timetz_ary],
timestamp: [Function: timestamp],
timestamp_ary: [Function: timestamp_ary],
interval: [Function: interval],
interval_ary: [Function: interval_ary],
uuid: [Function: uuid],
uuid_ary: [Function: uuid_ary],
inet: [Function: inet],
inet_ary: [Function: inet_ary],
cidr: [Function: cidr],
cidr_ary: [Function: cidr_ary],
macaddr: [Function: macaddr],
macaddr_ary: [Function: macaddr_ary],
money: [Function: money],
money_ary: [Function: money_ary],
enums: [Function: enums],
enums_ary: [Function: enums_ary],
point: [Function: point],
point_ary: [Function: point_ary],
line: [Function: line],
line_ary: [Function: line_ary],
lseg: [Function: lseg],
lseg_ary: [Function: lseg_ary],
path: [Function: path],
path_ary: [Function: path_ary],
polygon: [Function: polygon],
polygon_ary: [Function: polygon_ary],
circle: [Function: circle],
circle_ary: [Function: circle_ary],
int4range: [Function: int4range],
int4range_ary: [Function: int4range_ary],
int8range: [Function: int8range],
int8range_ary: [Function: int8range_ary],
numrange: [Function: numrange],
numrange_ary: [Function: numrange_ary],
tsrange: [Function: tsrange],
tsrange_ary: [Function: tsrange_ary],
daterange: [Function: daterange],
daterange_ary: [Function: daterange_ary],
tsvector: [Function: tsvector],
tsvector_ary: [Function: tsvector_ary],
tsquery: [Function: tsquery],
tsquery_ary: [Function: tsquery_ary]
}