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Article contents:== Outdated egg! This is an egg for CHICKEN 4, the unsupported old release. You're almost certainly looking for [[/eggref/5/blob-utils|the CHICKEN 5 version of this egg]], if it exists. If it does not exist, there may be equivalent functionality provided by another egg; have a look at the [[https://wiki.call-cc.org/chicken-projects/egg-index-5.html|egg index]]. Otherwise, please consider porting this egg to the current version of CHICKEN. [[tags: egg]] == blob-utils [[toc:]] == Documentation ==== Usage <enscript language=scheme> (require-extension blob-utils) </enscript> ==== bytes->hexstring <procedure>(bytes->hexstring BV [START [END]]) -> string</procedure> Returns a hexadecimal represenation of {{BV}}. ; {{BV}} : {{(or string blob srfi-4-vector)}} ; {{START}} : {{fixnum}} ; 0..<last> ; {{END}} : {{fixnum}} ; 0..<end> ==== bytes-set-u8 ==== bytes-set-s8 <procedure>(bytes-set-u8! BV IDX UINT)</procedure> <procedure>(bytes-set-s8! BV IDX INT)</procedure> ; {{BV}} : {{(or string blob srfi-4-vector)}} ; {{IDX}} : {{fixnum}} ; 0..<last> ; {{UINT}} : {{fixnum}} ; 0..(2^8)-1 ; {{INT}} : {{fixnum}} ; -(2^7)..(2^7)-1 ==== bytes-set-u16 ==== bytes-set-s16 <procedure>(bytes-set-u16! BV IDX UINT)</procedure> <procedure>(bytes-set-s16! BV IDX INT)</procedure> ; {{BV}} : {{(or string blob srfi-4-vector)}} ; {{IDX}} : {{fixnum}} ; 0..<last> ; {{UINT}} : {{fixnum}} ; 0..(2^16)-1 ; {{INT}} : {{fixnum}} ; -(2^15)..(2^15)-1 ==== bytes-set-u32 ==== bytes-set-s32 <procedure>(bytes-set-u32! BV IDX UINT)</procedure> <procedure>(bytes-set-s32! BV IDX INT)</procedure> ; {{BV}} : {{(or string blob srfi-4-vector)}} ; {{IDX}} : {{fixnum}} ; 0..<last> ; {{UINT}} : {{number}} ; 0..(2^32)-1 ; {{INT}} : {{number}} ; -(2^31)..(2^31)-1 ==== bytes-set-u64 ==== bytes-set-s64 <procedure>(bytes-set-u64! BV IDX UINT)</procedure> <procedure>(bytes-set-s64! BV IDX INT)</procedure> ; {{BV}} : {{(or string blob srfi-4-vector)}} ; {{IDX}} : {{fixnum}} ; 0..<last> ; {{UINT}} : {{number}} ; 0..(2^64)-1 ; {{INT}} : {{number}} ; -(2^63)..(2^63)-1 === Blob Hexadecimal Blob representation as a hexadecimal string. ==== Usage <enscript language=scheme> (require-extension blob-hexadecimal) </enscript> ==== blob->hex <procedure>(blob->hex BLOB [START [END]]) -> string</procedure> Returns a hexadecimal represenation of the {{BLOB}} bytes. ; {{BLOB}} : {{blob}} ; {{START}} : {{fixnum}} ; 0..<last> ; {{END}} : {{fixnum}} ; 0..<end> === Blob Set Int Stuff integers into a blob. ==== Usage <enscript language=scheme> (require-extension blob-set-int) </enscript> ==== blob-set-u8! <procedure>(blob-set-u8! BLOB N [(OFFSET 0)])</procedure> Sets the byte at {{OFFSET}} to {{N}} in {{BLOB}}. ==== blob-set-u16-le! <procedure>(blob-set-u16-le! BLOB N [(OFFSET 0)])</procedure> Sets the 2 bytes at {{OFFSET}} to {{N}} in {{BLOB}} using little-endian byte order. ==== blob-set-u16-be! <procedure>(blob-set-u16-be! BLOB N [(OFFSET 0)])</procedure> Sets the 2 bytes at {{OFFSET}} to {{N}} in {{BLOB}} using big-endian byte order. ==== blob-set-u32-le! <procedure>(blob-set-u32-le! BLOB N [(OFFSET 0)])</procedure> Sets the 4 bytes at {{OFFSET}} to {{N}} in {{BLOB}} using little-endian byte order. ==== blob-set-u32-be! <procedure>(blob-set-u32-be! BLOB N [(OFFSET 0)])</procedure> Sets the 4 bytes at {{OFFSET}} to {{N}} in {{BLOB}} using big-endian byte order. ==== blob-set-u64-le! <procedure>(blob-set-u64-le! BLOB N [(OFFSET 0)])</procedure> Sets the 8 bytes at {{OFFSET}} to {{N}} in {{BLOB}} using little-endian byte order. ==== blob-set-u64-be! <procedure>(blob-set-u64-be! BLOB N [(OFFSET 0)])</procedure> Sets the 8 bytes at {{OFFSET}} to {{N}} in {{BLOB}} using big-endian byte order. ==== *blob-set-u8! <procedure>(*blob-set-u8! BLOB N OFFSET)</procedure> Sets the byte at {{OFFSET}} to {{N}} in {{BLOB}}. Performs no argument checking. ==== *blob-set-u16-le! <procedure>(*blob-set-u16-le! BLOB N OFFSET)</procedure> Sets the 2 bytes at {{OFFSET}} to {{N}} in {{BLOB}} using little-endian byte order. Performs no argument checking. ==== *blob-set-u16-be! <procedure>(*blob-set-u16-be! BLOB N OFFSET)</procedure> Sets the 2 bytes at {{OFFSET}} to {{N}} in {{BLOB}} using big-endian byte order. Performs no argument checking. ==== *blob-set-u32-le! <procedure>(*blob-set-u32-le! BLOB N OFFSET)</procedure> Sets the 4 bytes at {{OFFSET}} to {{N}} in {{BLOB}} using little-endian byte order. Performs no argument checking. ==== *blob-set-u32-be! <procedure>(*blob-set-u32-be! BLOB N OFFSET)</procedure> Sets the 4 bytes at {{OFFSET}} to {{N}} in {{BLOB}} using big-endian byte order. Performs no argument checking. ==== *blob-set-u64-le! <procedure>(*blob-set-u64-le! BLOB N OFFSET)</procedure> Sets the 8 bytes at {{OFFSET}} to {{N}} in {{BLOB}} using little-endian byte order. Performs no argument checking. ==== *blob-set-u64-be! <procedure>(*blob-set-u64-be! BLOB N OFFSET)</procedure> Sets the 8 bytes at {{OFFSET}} to {{N}} in {{BLOB}} using big-endian byte order. Performs no argument checking. === Pack Integer Set integer in blob. ==== Usage <enscript language=scheme> (require-extension pack-integer) </enscript> ==== pack-u8 <procedure>(pack-u8 N [kind: KIND] [start: START]) -> (or string blob u8vector)</procedure> Returns the number {{N}} packed into an object of {{KIND}}, at position {{START}}. ; {{KIND}} : {{(or symbol (or string blob u8vector))}} ; {{START}} : {{fixnum}} ; 0..<last> ==== pack-u16 <procedure>(pack-u16 N [kind: KIND] [start: START] [order: ORDER]) -> (or string blob u8vector)</procedure> Returns the number {{N}} packed into an object of {{KIND}}, at position {{START}}. ; {{KIND}} : {{(or symbol (or string blob u8vector))}} ; {{START}} : {{fixnum}} ; {{(<= 0 ...)}} ; {{ORDER}} : {{symbol}} ; {{big-endian be big little-endian le little}} ==== pack-u32 <procedure>(pack-u32 N [kind: KIND] [start: START] [order: ORDER]) -> (or string blob u8vector)</procedure> Returns the number {{N}} packed into an object of {{KIND}}, at position {{START}}. ; {{KIND}} : {{(or symbol (or string blob u8vector))}} ; {{START}} : {{fixnum}} ; {{(<= 0 ...)}} ; {{ORDER}} : {{symbol}} ; {{big-endian be big little-endian le little}} ==== pack-u64 <procedure>(pack-u64 N [kind: KIND] [start: START] [order: ORDER]) -> (or string blob u8vector)</procedure> Returns the number {{N}} packed into an object of {{KIND}}, at position {{START}}. ; {{KIND}} : {{(or symbol (or string blob u8vector))}} ; {{START}} : {{fixnum}} ; {{(<= 0 ...)}} ; {{ORDER}} : {{symbol}} ; {{big-endian be big little-endian le little}} ==== pack-integer <procedure>(pack-integer N [kind: KIND] [start: START] [order: ORDER]) -> (or string blob u8vector)</procedure> Returns the number {{N}} packed into an object of {{KIND}}, at position {{START}}. ; {{KIND}} : {{(or symbol (or string blob u8vector))}} ; {{START}} : {{fixnum}} ; {{(<= 0 ...)}} ; {{ORDER}} : {{symbol}} ; {{big-endian be big little-endian le little}} == Notes * The {{pack-int}} & {{blob-utils}} APIs overlap. * The {{pack-int}} API should be bit-indexed. == Requirements [[string-utils]] [[check-errors]] [[setup-helper]] [[test]] == Author [[/users/kon-lovett|Kon Lovett]] == Version history ; 1.2.0 : Added {{blob-utils}} module. ; 1.1.0 : Added {{pack-integer}} module. ; 1.0.4 : ; 1.0.3 : Reverted 64 bit support. ; 1.0.2 : Removed 64 bit support. ; 1.0.1 : ; 1.0.0 : Hello (Some from string-utils) == License Copyright (C) 2012-2018 Kon Lovett. All rights reserved. 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 ASIS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 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