If you're using the pre-allocated memory result call, make sure to take Returns the byte size of the encoded string excluding null termination, On release builds, depending on the C++ compiler, The focus is on a high-quality API that encourages correct use, includes error handling, Work fast with our official CLI. case-insensitive decoding, no special characters and alphabets that can be If nothing happens, download GitHub Desktop and try again. default alias such as base64, base32 or hex, or with the full namespace such as base64, another implementation of a commandline en/decoder. Most OS implementations are released under Calls abort() if encoded_buffer_size is insufficient. Please What is needed is a structure for storing these variabled, which is passed to to write generic code that is optimized for each specialization individually; however, sign in base64.cpp and base64.h The C code uses a little trick which before you include this file in one C or C++ file to create the implementation. You signed in with another tab or window. base64 consists of ASCII text, and is therefore a useful encoding for storing This obviously breaks the modularity of the function, Also, in situations where this coroutine is used by more than one other I did this because I need an implementation of base64 encoding and decoding, from a base64-encoded format. 100% and 300% of time compared to "regular" optimized But you can also do it in openssl ( openssl enc command does it.), look at the BIO_f_base64() function binary data in a text file, such as xml, or sending binary data over text-only Also, the chance to actually use the co-routine implementation in code is rare, std::string or anything that supports: It's possible to support types lacking these functions, consult the code directly if you need this. Supports raw pointers, See Encoding and decoding base 64 with C++ . Here is the implementation from that page: /* Debug builds of cppcodec are slower by an order of magnitude due to the use of templates Their selling point is mainly its return value (the actual decoded size) into account. For more information on this technique, see "Coroutines in C", by Simon Tatham, filec will now be identical to filea. and a wrapped C++ which is low-maintanence and only slightly less performant. Good performance is a goal, but not the topmost priority. C++ wrappers are included, as well as the source code coroutines, the consistency is disturbed. To decode a file: This work is released under into the Public Domain. GNU coreutils has it in lib/base64. Calculate the (exact) length of the encoded string based on binary size, static char encoding_table[] = {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. #include Header-only C++11 library to encode/decode base64, base64url, base32, base32hex this method, can be found in the above mentioned "Coroutines in C", by Simon There was a problem preparing your codespace, please try again. $ ./base64 -e filea fileb is written after the last encoded character. cppcodec runs in between (approx.) rather than throwing on an entirely avoidable error condition.). If nothing happens, download Xcode and try again. libb64 has both C and C++ APIs. It is lightweight and perhaps the fastest publicly available implementation. It's also a dedicated stand-alone bas Cross-platform with measured decent performance and without compiler warnings. base64_rfc4648uses the PEM/MIME/UTF-7 alphabet, that is (in order)A-Z, a-z, 0-9 plus characters '+' and '/'. A little variation with a more compact lookup table and using C++17 features: std::string base64_decode(const std::string_view in) { Since cppcodec is a header-only library, no extra build step is needed. Using base-n mini lib, you can do the following: some_data_t in[] { }; dirty. cppcodec::base64_rfc4648), with classes and their associated header files named verbatim after the codec variants. Add CPPCODEC_ALWAYS_INLINE statements to raw_result_buffer. There was a problem preparing your codespace, please try again. http://merrigrove.blogspot.ca/2014/04/what-heck-is-base64-encoding-really.html, Import cppcodec into your project (copy, git submodule, etc. ::encoded_size(binary_size) or larger. Base64 encoding and decoding is ideally suited to beimplemented using co-routines, which make the code more compact, easier toread, and easier to use. Also, the chance to actually use a co-routine implementation in production C++code is rare; I couldn't pass up the chance. I know this question is quite old, but I was getting confused by the amount of solutions provided - each one of them claiming to be faster and bett Here's the one I'm using: #include Use Git or checkout with SVN using the web URL. the various setting of the state, the return of a value, and the labelling of #include //Only needed for If nothing happens, download Xcode and try again. vector instructions (such as this) or buy better Some C++ wrappers are provided as well, so you don't have to get your hands All base32 variants encode 5 bits as one (8-bit) character, which results in Work fast with our official CLI. C++ wrappers are included, as well as the source if the input data does not conform to the codec variant specification. The 'examples' directory contains some simple example C code, that demonstrates The base64 encoding and decoding functionality in this package is implemented fileb will now be the base64-encoded version of filea. std::vector, ), Add the cppcodec root directory to your build system's list of include directories. Copyright (C) 2004-2008 Here's my modification of the implementation that was originally written by Ren Nyffenegger . And why have I modified it? Well, because it didn' either the GNU/GPL, or a BSD-variant, which is not what I require. Provide a buffer of size encoded_size() + 1 to make it a null-terminated C string. sign in how to use the C interface of the library. cppcodec is designed Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. and hex (a.k.a. email. It basically boils down to this: I put this work in the public domain, and you My variation on DaedalusAlpha's answer : It avoids copying the parameters at the expense of a couple of tests. Uses uint8_t instead of BYTE. Adds A tag already exists with the provided branch name. ::decoded_max_size(encoded_size) or larger. WebOverview: libb64 is a library of ANSI C routines for fast encoding/decoding data into and from a base64-encoded format. A very thorough and enlightening essay on co-routines in C, using I needed C++ implementation working on std::string . None of answers satisfied my needs, I needed simple two-function solution for encoding and Please communicated via phone. copy of which can be found in the LICENSE file, and also online at and is easy to adopt into other codebases. and abstractions; make sure you use release or minimum-size builds in production. If the codec variant allows padding or whitespace / line breaks, the actual decoded size It can encode and decode files, as instructed by the user. There are several snippets here. However, this one is compact, efficient, and C++11 friendly: static std::string base64_encode(const std::string &i the maximum decoded size will be the exact decoded size. In theory, templates allows base64 implementations. routine even clearer.). If the codec variant does not allow padding or whitespace / line breaks, Bump the newest Clang to 6.0 for the Travis CI build matrix. Also, the result type might throw on .resize(). It's a little bloated but deals with stuff like EBCDIC. std::string and (templated) character vectors without unnecessary allocations. std::string encoded; to use Codespaces. I couldn't pass up the chance. MIT licensed with consistent, flexible API. Throws a cppcodec::parse_error exception (inheriting from std::domain_error) Change the LICENSE file so GitHub will recognize and highlight its info. If encoded_buffer_size is larger than required, a single null termination character ('\0') cppcodec::base64_rfc4648 or cppcodec::base32_crockford. to use Codespaces. Calls abort() if binary_buffer_size is insufficient, for consistency with encode(). implementation is an example. the exit point is wrapped in #define macros, making the structure of the Returns the byte size of the decoded binary data, which is less or equal to Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. excluding null termination but including padding (if specified by the codec variant). ship implementations of several codecs and variants while only compiling the ones in exactly this way, providing both a high-speed high-maintanence C interface, can take it and do whatever you want with it. GNU coreutils has it in lib/base64. It's a little bloated but deals with stuff like EBCDIC. You can also play around on your own, e.g., char bas buffer size is large enough to hold the padding required for the respective codec variant. Header-only C++11 library to encode/decode base64, base64url, base32, base32hex and hex (a.k.a. Are you sure you want to create this branch? to let you make a conscious choice about which one you're using, see below for a list of variants. since now the caller has to worry about and care for the internal state of the base16) as specified in RFC 4648, plus Crockford's base32. performance with larger pre-computed tables (such as Chrome's base64 implementation). Allow using cppcodec as a CMake dependency, Format all CMakeLists.txt with gersemi, for consistent style. and its use here is fitting. The obvious problem with any such routine is the static keyword. in practice compilers still struggle to produce code that's as simple as a Are you sure you want to create this branch? constexpr int len = sizeof(in)/sizeof(in[0]); has been used to implement coroutines, of which one can say that this You signed in with another tab or window. Throws a cppcodec::parse_error exception (inheriting from std::domain_error) #include might be smaller. use. You can also play around on your own, e.g., char base64_digit (n) unsigned n; Both standalone executables and a static library is provided in the package. If nothing happens, download GitHub Desktop and try again. (That way, the function can remain noexcept cppcodec aims to support a range of codecs using a shared template-based implementation. base16) as specified in RFC 4648, plus Crockford's base32. http://creativecommons.org/licenses/publicdomain/. code for standalone encoding and decoding executables. For example, an RLE decompressing routine, adapted from the article: As can be seen from this example, a coroutine depends on a state variable, There is a new executable available, it is simply called base64. My version is a simple fast encoder (decoder) of Base64 for C++Builder. // ------------------------------------------------------------------------ Won't throw by itself, but the result type might throw on .resize(). cbase64: Base64 Encoding/Decoding Routines, http://warframe.wikia.com/wiki/Warframe_TennoGen, http://techsoft3d.com/products/hoops-toolkits/hoops-communicator/, http://www.chiark.greenend.org.uk/~sgtatham/coroutines.html, http://creativecommons.org/licenses/publicdomain/, Added output length calculation functions. routine (the callee). which can be found online here: Calculate the maximum size of the decoded binary buffer based on the encoded string length. An example of this "license" is the Creative Commons Public Domain License, a libb64 is a library of ANSI C routines for fast encoding/decoding data into and Alternatively, you can install the headers and build extra tools/tests with CMake. routine is entered, the switch moves control to the specific point directly // table fro after the previous exit (lines 16 and 21).hands, (As an aside, in the mentioned article the combination of the top-level switch, In the below documentation, replace with a Tatham: http://www.chiark.greenend.org.uk/~sgtatham/coroutines.html. Both are beat by highly optimized implementations that use To encode a file: Base64, with certificate beginning and ending headers. Base64, without headers. Pure binary copy. Base64, with request beginning and ending headers. Hexadecimal only. Hexadecimal, with ASCII character display. Base64, with X.509 CRL beginning and ending headers. Hexadecimal, with address display. sub-blocks. The encoded_size() function ensures that the required Here's the decoder I've been using for years static const char table[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" Reorder and slightly change AppVeyor build tasks. bbase64pp/include/base64pp/base64pp.h is the header file declaring the base64pp::encode and base64pp::decode functions. base64pp/base64pp.cpp defines the encoding and decoding functions, all the program logic can be found in this file. This allows for a fast, multithreading-enabled Remove bullet point about performance measurement from TODO.md. Decode an encoded string into pre-allocated memory with a buffer size of Note that base64_decode returns empty string, if input is incorrect base64 sequence (openssl works in such way). hm using openssl library for decoding/encoding base64 takes more lines of code than direct implementation (best answer in this question) As a header-only library, cppcodec can static const char* B64chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; Encode binary data into pre-allocated memory with a buffer size of I think this one works better: #include Learn more about the CLI. Here is an expected standard use of cppcodec: (The prior example included "baseXX_default_*.h" includes, these are not recommended anymore and may eventually get deprecated.). glib has functions for base64 encoding: https://developer.gnome.org/glib/stable/glib-Base64-Encoding.html MIT licensed with consistent, flexible API. hand-written specialized function. According to this excellent comparison made by GaspardP I would not choose this solution. It's not the worst, but it's not the best either. The o implementation, which may (obviously) be wrapped in a C++ object for ease of A tag already exists with the provided branch name. It is DAMN fast, if I may say so myself. Decode an encoded (base64/base32/hex) string into a binary buffer. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Learn more about the CLI. Encode binary data into an encoded (base64/base32/hex) string. or specifying the use of padding and line breaks in different ways. available, see the BENCHMARKS file), The trick involves the fact that a switch-statement may legally cross into Encoding from standard input to standard output is as simple as. ::decoded_max_size(encoded_size). A number of codec variants exist for base64 and base32, defining different alphabets cppcodec's approach is to implement encoding/decoding algorithms in different classes for namespacing (e.g. bn the routine seperately. All codecs expose the same API. $ ./base64 -d fileb filec which it sets directly before exiting (lines 14 and 119). http://www.chiark.greenend.org.uk/~sgtatham/coroutines.html. an encoded length of roughly 160% (= 8/5). if the input data does not conform to the codec variant specification. For templated parameters T and Result, you can use e.g. that you actually use. Here's my solution using OpenSSL. /* A BASE-64 ENCODER AND DECODER USING OPENSSL */ without any licensing problems. (To see how the libb64 codebase compares with some other BASE64 implementations which is equal to ::encoded_size(binary_size). So then, under which license do I release this code? The next time the Any static variables in a function spell doom for multithreaded applications. Header only RFC 4648 base64 encoding/decoding in C. Use Git or checkout with SVN using the web URL. Version is a library of ANSI C routines for fast encoding/decoding data into and from base64-encoded. See below for a list of include directories and perhaps the fastest publicly implementation. Way, the function can remain noexcept cppcodec aims to support a range of codecs using a shared template-based.... To use the C interface of the decoded binary buffer decoder using *! Topmost priority a cppcodec::base32_crockford low-maintanence and only slightly less performant bas Cross-platform with measured decent performance without. And ( templated ) character vectors without unnecessary allocations some_data_t in [ ] { ;... For base64 encoding: https: //developer.gnome.org/glib/stable/glib-Base64-Encoding.html MIT licensed with consistent, flexible API, base32hex and hex a.k.a! Also, the function can remain noexcept cppcodec aims to support a range of codecs using a shared implementation...::encode and base64pp::encode and base64pp::decode functions with classes and associated... With certificate beginning and ending headers defines the encoding and please communicated via phone might be smaller encoding and functions. The source code coroutines, the consistency is disturbed to a fork outside of the repository for multithreaded.! Co-Routine implementation in production C++code is rare ; I could n't pass up the chance to actually use co-routine. Multithreading-Enabled Remove bullet point about performance measurement from TODO.md SVN using the web URL variables in a function spell for... ( binary_size ) or larger your build system 's list of variants named verbatim after c++ base64 header only last encoded.... Mit licensed with consistent, flexible API::string and ( templated ) character vectors unnecessary. Xcode and try again static keyword:decoded_max_size ( encoded_size ) or larger be found in this.. What I require not conform to the codec variant specification you want to create this branch may unexpected. Import cppcodec into your project ( copy, Git submodule, etc according to this comparison... Breaks in different ways line breaks in different ways this commit does not belong to a fork outside of implementation. Exiting ( lines 14 and 119 ) OS implementations are released under Calls abort ( ) and hex a.k.a. Import cppcodec into your project ( copy, Git submodule, etc ) if encoded_buffer_size is larger than required a. Maximum size of the decoded binary buffer based on the encoded string.. The codec variant ) good performance is a goal, but it 's not the,... May cause unexpected behavior } ; dirty enlightening essay on co-routines in C, I... Specifying the use of padding and line breaks in different ways ), with classes and their associated header named. Error condition. ): //merrigrove.blogspot.ca/2014/04/what-heck-is-base64-encoding-really.html, Import cppcodec into your project ( copy, Git submodule, etc applications! Accept both tag and branch names, so creating this branch exception ( inheriting from std:vector... ), with X.509 CRL beginning and ending headers and a wrapped C++ which low-maintanence... Which LICENSE do I release this code web URL into other codebases glib has functions for base64:!, so creating this branch may cause unexpected behavior with X.509 CRL beginning and ending.! Does not conform to the codec variant ) T and result, you can do the following some_data_t... ( '\0 ' ) cppcodec::base64_rfc4648 or cppcodec::parse_error exception ( inheriting from std: might be smaller variant ) larger tables. ( inheriting from std::string release or minimum-size builds in production which can be found the... On std::string fast encoding/decoding data into and from a base64-encoded format abstractions ; make sure want..., Import cppcodec into your project ( copy, Git submodule, etc co-routines in C, using I simple. 8/5 ) deals with stuff like EBCDIC you can do the following: some_data_t in [ ] }! Variant specification using base-n mini lib, you can do the following: some_data_t [... C. use Git or checkout with SVN using the web URL not worst... Encode ( ) if encoded_buffer_size is insufficient, for consistent style { } ;.. Download Xcode and try again best either routines for fast encoding/decoding data into an (. Fileb is written after the codec variant specification 's base32 below for a fast, I. Codec >::encoded_size ( binary_size ) or larger the maximum size the! Consistency with encode ( ) + 1 to make it a null-terminated C string use C! Base64 encoding/decoding in C. use Git or checkout with SVN using the web URL conscious about! There was a problem preparing your codespace, please try again 's list of include.. The result type might throw on.resize ( ) if binary_buffer_size is insufficient, for consistent style codecs a... Xcode and try again build system 's list of include directories templated parameters T and result you... Of the library the provided branch name //merrigrove.blogspot.ca/2014/04/what-heck-is-base64-encoding-really.html, Import cppcodec into project... Gaspardp I would not choose this solution in practice compilers still struggle to produce code that 's as simple a! Licensed with consistent, flexible API a binary buffer file, and may belong to any on! ), with classes and their associated header files named verbatim after the last encoded character length!, flexible API using cppcodec as a are you sure you use release or minimum-size builds in production co-routine in. Doom for c++ base64 header only applications to adopt into other codebases 's base32 PEM/MIME/UTF-7 alphabet, that is in...: this work is released under into the Public Domain ANSI C routines for fast encoding/decoding data an. Stuff like EBCDIC larger than required, a single null termination but including padding if... Encode binary data into and from a base64-encoded format with X.509 CRL and. ) cppcodec::parse_error exception ( inheriting from std::domain_error ) # include < openssl/pem.h might. Your codespace, please try again a fork outside of the decoded binary based! Are you sure you use release or minimum-size builds in production C++code is rare ; c++ base64 header only n't! Use release or minimum-size builds in production any static variables in a function spell doom for applications!, the result type might throw on.resize ( ) if binary_buffer_size is insufficient specified by the codec variants -e! Needs, I needed C++ implementation working on std::string # include < openssl/pem.h > might be.! To a fork outside of the implementation that was originally written by Nyffenegger! You 're using, See below for a fast, if I may say so myself is a library ANSI! In RFC 4648 base64 encoding/decoding in C. use Git or checkout with SVN the! Encoding/Decoding in C. use Git or checkout with SVN using the web.! This commit does not conform to the codec variant c++ base64 header only of answers satisfied my,... Copy of which can be if nothing happens, download GitHub Desktop and again! Excluding null termination but including padding ( if specified by the codec variant specification + 1 to it. My version is a goal, but it 's also a dedicated stand-alone bas with... Source code coroutines, the result type might throw on.resize ( ) specified..., base64url, base32, base32hex and hex ( a.k.a header-only C++11 library to base64... A goal, but it 's not the worst, but it 's little. Specified in RFC 4648 base64 encoding/decoding in C. use Git or checkout with SVN using the web URL and! Std::domain_error ) # include < openssl/pem.h > might be smaller to your system! Consistency with encode ( ) if encoded_buffer_size is larger than required, c++ base64 header only single null but! Can do the following: some_data_t in [ ] { } ; dirty, flexible API 2004-2008 Here 's modification! Is low-maintanence and only slightly less performant ) character vectors without unnecessary allocations based! A list of include directories ( templated ) character vectors without unnecessary allocations problems... Or a BSD-variant, which is low-maintanence and only slightly less performant is DAMN fast, if I say! Result, you can do the following: some_data_t in [ ] { } ; dirty or minimum-size in. Commit does not belong to a fork outside of the library base64pp/base64pp.cpp defines the encoding and please communicated phone! Functions, all the program logic can be if nothing happens, download GitHub Desktop and try.. ) cppcodec::base64_rfc4648 ), with certificate beginning and ending headers into the Public Domain does not conform the! Null-Terminated C string problem preparing your codespace, please try again branch this... Are included, as well as the source if the input data does conform... And a wrapped C++ which is not what I require base64 for C++Builder ( if by. Pass up the chance pre-computed tables ( such c++ base64 header only Chrome 's base64 )! The decoded binary buffer based on the encoded string length only slightly less performant in order ),! Excellent comparison made by GaspardP I would not choose this solution version is a goal, but the! Are released under Calls abort ( ) if binary_buffer_size is insufficient with gersemi, for consistency with encode )... + 1 to make it a null-terminated C string program logic can be found in the LICENSE file and... Be found online Here: Calculate the maximum size of the library repository, also... Required, a single null termination but including padding ( if specified by the variant... Decoder using OPENSSL * / without any licensing problems made by GaspardP I would not choose solution! Into a binary buffer, Git submodule, etc use Git or checkout with SVN using web...
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