(scheme bytevector)

This is based on R6RS bytevectors library

(endianness <endianess symbol>) syntax

(native-endianness)

Returns the endianness symbol associated implementation's preferred endianness (usually that of the underlying machine architecture). This may be any <endianness symbol>, including a symbol other than big and little.

(bytevector? obj)

Returns #t if obj is a bytevector, otherwise returns #f.

(make-bytevector k [fill])

Returns a newly allocated bytevector of K bytes.

If the FILL argument is missing, the initial contents of the returned bytevector are unspecified.

If the FILL argument is present, it must be an exact integer object in the interval {-128, ... 255} that specifies the initial value for the bytes of the bytevector: If FILL is positive, it is interpreted as an octet; if it is negative, it is interpreted as a byte.

(bytevector-length bytevector)

Returns, as an exact integer object, the number of bytes in bytevector.

(bytevector=? bytevector1 bytevector2)

Returns #t if bytevector1 and bytevector2 are equal-that is, if they have the same length and equal bytes at all valid indices. It returns

f otherwise.

(bytevector-fill! bytevector fill)

The fill argument is as in the description of the make-bytevector procedure. The bytevector-fill! procedure stores fill in every element of bytevector and returns unspecified values. Analogous to vector-fill!.

(bytevector-copy! source source-start‌‌ target target-start k)

(bytevector-copy bytevector)‌‌

Returns a newly allocated copy of bytevector.

(bytevector-u8-ref bytevector k)‌‌

The bytevector-u8-ref procedure returns the byte at index k of bytevector, as an octet.

(bytevector-s8-ref bytevector k)‌‌

The bytevector-s8-ref procedure returns the byte at index k of bytevector, as a (signed) byte.

(bytevector-u8-set! bytevector k octet)‌‌

The bytevector-u8-set! procedure stores octet in element k of bytevector.

(bytevector-s8-set! bytevector k byte)‌‌

The bytevector-s8-set! procedure stores the two's-complement representation of byte in element k of bytevector.

(bytevector->u8-list bytevector)‌‌

The bytevector->u8-list procedure returns a newly allocated list of the octets of bytevector in the same order.

(u8-list->bytevector list)‌‌

The u8-list->bytevector procedure returns a newly allocated bytevector whose elements are the elements of list list, in the same order. It is analogous to list->vector.

(bytevector-uint-ref bytevector k endianness size)‌‌

(bytevector-sint-ref bytevector k endianness size)‌‌

(bytevector-uint-set! bytevector k n endianness size)‌‌

(bytevector-sint-set! bytevector k n endianness size)‌‌

(bytevector->uint-list bytevector endianness size)‌‌

(bytevector->sint-list bytevector endianness sizee‌‌

(uint-list->bytevector list endianness size)‌‌

(sint-list->bytevector list endianness size)‌‌

(bytevector-u16-ref bytevector k endianness)‌‌

(bytevector-s16-ref bytevector k endianness)‌‌

(bytevector-u16-native-ref bytevector k)‌‌

(bytevector-s16-native-ref bytevector k)‌‌

(bytevector-u16-set! bytevector k n endianness)‌‌

(bytevector-s16-set! bytevector k n endianness)‌‌

(bytevector-u16-native-set! bytevector k n)‌‌

(bytevector-s16-native-set! bytevector k n)‌‌

(bytevector-u32-ref bytevector k endianness)‌‌

(bytevector-s32-ref bytevector k endianness)‌‌

(bytevector-u32-native-ref bytevector k)‌‌

(bytevector-s32-native-ref bytevector k)‌‌

(bytevector-u32-set! bytevector k n endianness)‌‌

(bytevector-s32-set! bytevector k n endianness)‌‌

(bytevector-u32-native-set! bytevector k n)‌‌

(bytevector-s32-native-set! bytevector k n)‌‌

(bytevector-u64-ref bytevector k endianness)‌‌

(bytevector-s64-ref bytevector k endianness)‌‌

(bytevector-u64-native-ref bytevector k)‌‌

(bytevector-s64-native-ref bytevector k)‌‌

(bytevector-u64-set! bytevector k n endianness)‌‌

(bytevector-s64-set! bytevector k n endianness)‌‌

(bytevector-u64-native-set! bytevector k n)‌‌

(bytevector-s64-native-set! bytevector k n)‌‌

(bytevector-ieee-single-native-ref bytevector k)‌‌

(bytevector-ieee-single-ref bytevector k endianness)‌‌

(bytevector-ieee-double-native-ref bytevector k)‌‌

(bytevector-ieee-double-ref bytevector k endianness)‌‌

(bytevector-ieee-single-native-set! bytevector k x)‌‌

(bytevector-ieee-single-set! bytevector ‌k x endianness)

(bytevector-ieee-double-native-set! bytevector k x)‌‌

(bytevector-ieee-double-set! bytevector k x endianness)‌

(string->utf8 string)‌‌

(string->utf16 string)‌‌

(string->utf16 string endianness)‌‌

(string->utf32 string)‌‌

(string->utf32 string endianness)‌‌

(utf8->string bytevector)‌‌

(utf16->string bytevector endianness)‌‌

(utf16->string bytevector‌ endianness endianness-mandatory)

(utf32->string bytevector endianness)‌‌

(utf32->string bytevector‌ endianness endianness-mandatory)