Buffer class

Annotations

Constructors

Buffer()

Properties

buffer → dynamic
read-only
length → int
Returns the amount of memory allocated for this buffer in bytes. Note that this does not necessarily reflect the amount of "usable" data within buffer.
read-only
hashCode → int
The hash code for this object.
read-only, inherited
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited

Methods

copy(dynamic target, [int targetStart, int sourceStart, int sourceEnd]) → bool
Copies data from a region of buf to a region in target even if the target memory region overlaps with buf.
entries() → Iterable<List<int>>
Creates and returns an iterator of (index, byte) pairs from the contents of this buffer.
equals(dynamic other) → bool
Returns true if both this and other buffer have exactly the same bytes, false otherwise.
fill(dynamic value, [int offset, int end, String encoding]) → Buffer
Fills this buffer with the specified value. If the offset and end are not given, the entire buffer will be filled.
includes(dynamic value, [int byteOffset, String encoding]) → bool
Equivalent to indexOf() != -1.
indexOf(dynamic value, [int byteOffset, String encoding]) → int
keys() → Iterable<int>
Creates and returns an iterator of keys (indices) in this buffer.
lastIndexOf(dynamic value, [int byteOffset, String encoding]) → int
Identical to indexOf, except buffer is searched from back to front.
readDoubleBE(int offset, [bool noAssert]) → num
Reads a 64-bit double from this buffer at the specified offset with specified endian format.
readDoubleLE(int offset, [bool noAssert]) → num
Reads a 64-bit double from this buffer at the specified offset with specified endian format.
readFloatBE(int offset, [bool noAssert]) → num
Reads a 32-bit float from this buffer at the specified offset with specified endian format.
readFloatLE(int offset, [bool noAssert]) → num
Reads a 32-bit float from this buffer at the specified offset with specified endian format.
readInt8(int offset, [bool noAssert]) → num
Reads a signed 8-bit integer from this buffer at the specified offset.
readInt16BE(int offset, [bool noAssert]) → num
Reads a signed 16-bit integer from this buffer at the specified offset with specified endian format.
readInt16LE(int offset, [bool noAssert]) → num
Reads a signed 16-bit integer from this buffer at the specified offset with specified endian format.
readInt32BE(int offset, [bool noAssert]) → num
Reads a signed 32-bit integer from this buffer at the specified offset with specified endian format.
readInt32LE(int offset, [bool noAssert]) → num
Reads a signed 32-bit integer from this buffer at the specified offset with specified endian format.
readIntBE(int offset, int byteLength, [bool noAssert]) → int
Reads byteLength number of bytes from this buffer at the specified offset and interprets the result as a two's complement signed value. [...]
readIntLE(int offset, int byteLength, [bool noAssert]) → int
Reads byteLength number of bytes from this buffer at the specified offset and interprets the result as a two's complement signed value. [...]
readUInt8(int offset, [bool noAssert]) → num
Reads a unsigned 8-bit integer from this buffer at the specified offset.
readUInt16BE(int offset, [bool noAssert]) → num
Reads a unsigned 16-bit integer from this buffer at the specified offset with specified endian format.
readUInt16LE(int offset, [bool noAssert]) → num
Reads a unsigned 16-bit integer from this buffer at the specified offset with specified endian format.
readUInt32BE(int offset, [bool noAssert]) → num
Reads a unsigned 32-bit integer from this buffer at the specified offset with specified endian format.
readUInt32LE(int offset, [bool noAssert]) → num
Reads a unsigned 32-bit integer from this buffer at the specified offset with specified endian format.
readUIntBE(int offset, int byteLength, [bool noAssert]) → int
Reads byteLength number of bytes from this buffer at the specified offset and interprets the result as an unsigned integer. [...]
readUIntLE(int offset, int byteLength, [bool noAssert]) → int
Reads byteLength number of bytes from this buffer at the specified offset and interprets the result as an unsigned integer. [...]
slice([int start, int end]) → Buffer
Returns a new Buffer that references the same memory as the original, but offset and cropped by the start and end indices.
swap16() → Buffer
Interprets this buffer as an array of unsigned 16-bit integers and swaps the byte-order in-place.
swap32() → Buffer
Interprets this buffer as an array of unsigned 32-bit integers and swaps the byte-order in-place.
swap64() → Buffer
Interprets this buffer as an array of 64-bit numbers and swaps the byte-order in-place.
toJSON() → dynamic
Returns a JSON representation of this buffer.
toString([String encoding, int start, int end]) → String
Decodes this buffer to a string according to the specified character encoding.
values() → Iterable<int>
Creates and returns an iterator for this buffer values (bytes).
write(String string, [int offset, int length, String encoding]) → int
Writes string to this buffer at offset according to the character encoding. Returns number of bytes written.
writeDoubleBE(num value, int offset, [bool noAssert]) → int
Writes value at the specified offset with specified endian format. Returns offset plus the number of bytes written.
writeDoubleLE(num value, int offset, [bool noAssert]) → int
Writes value at the specified offset with specified endian format. Returns offset plus the number of bytes written.
writeFloatBE(num value, int offset, [bool noAssert]) → int
Writes value at the specified offset with specified endian format. Returns offset plus the number of bytes written.
writeFloatLE(num value, int offset, [bool noAssert]) → int
Writes value at the specified offset with specified endian format. Returns offset plus the number of bytes written.
writeInt8(num value, int offset, [bool noAssert]) → int
Writes value at the specified offset with specified endian format. Returns offset plus the number of bytes written.
writeInt16BE(num value, int offset, [bool noAssert]) → int
Writes value at the specified offset with specified endian format. Returns offset plus the number of bytes written.
writeInt16LE(num value, int offset, [bool noAssert]) → int
Writes value at the specified offset with specified endian format. Returns offset plus the number of bytes written.
writeInt32BE(num value, int offset, [bool noAssert]) → int
Writes value at the specified offset with specified endian format. Returns offset plus the number of bytes written.
writeInt32LE(num value, int offset, [bool noAssert]) → int
Writes value at the specified offset with specified endian format. Returns offset plus the number of bytes written.
writeIntBE(num value, int offset, int byteLength, [bool noAssert]) → int
Writes byteLength bytes of value at the specified offset. Supports up to 48 bits of accuracy.
writeIntLE(num value, int offset, int byteLength, [bool noAssert]) → int
Writes byteLength bytes of value at the specified offset. Supports up to 48 bits of accuracy.
writeUInt8(int value, int offset, [bool noAssert]) → int
Writes value at the specified offset with specified endian format. Returns offset plus the number of bytes written.
writeUInt16BE(int value, int offset, [bool noAssert]) → int
Writes value at the specified offset with specified endian format. Returns offset plus the number of bytes written.
writeUInt16LE(int value, int offset, [bool noAssert]) → int
Writes value at the specified offset with specified endian format. Returns offset plus the number of bytes written.
writeUInt32BE(int value, int offset, [bool noAssert]) → int
Writes value at the specified offset with specified endian format. Returns offset plus the number of bytes written.
writeUInt32LE(int value, int offset, [bool noAssert]) → int
Writes value at the specified offset with specified endian format. Returns offset plus the number of bytes written.
writeUIntBE(num value, int offset, int byteLength, [bool noAssert]) → int
Writes byteLength bytes of value at the specified offset. Supports up to 48 bits of accuracy.
writeUIntLE(num value, int offset, int byteLength, [bool noAssert]) → int
Writes byteLength bytes of value at the specified offset. Supports up to 48 bits of accuracy.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited

Operators

operator ==(dynamic other) → bool
The equality operator.
inherited

Static Properties

poolSize ↔ int
This is the number of bytes used to determine the size of pre-allocated, internal Buffer instances used for pooling. [...]
read / write

Static Methods

alloc(int size, [dynamic fill, String encoding]) → Buffer
Allocates a new Buffer of size bytes. [...]
allocUnsafe(int size) → Buffer
Allocates a new Buffer of size bytes. [...]
allocUnsafeSlow(int size) → Buffer
Allocates a new Buffer of size bytes. [...]
byteLength(dynamic string, [dynamic encoding]) → Buffer
Returns the actual byte length of a string.
compare(dynamic buf1, dynamic buf2) → int
Compares buf1 to buf2 typically for the purpose of sorting arrays of Buffer instances.
concat(List list, [int totalLength]) → Buffer
Returns a new Buffer which is the result of concatenating all the Buffer instances in the list together.
from(dynamic data, [dynamic arg1, dynamic arg2]) → Buffer
Creates a new Buffer from data.
isBuffer(dynamic obj) → bool
Returns true if obj is a Buffer, false otherwise.
isEncoding(String encoding) → bool
Returns true if encoding contains a supported character encoding, or false otherwise.