bits | A java library for handling bit level data | Serialization library

 by   tomgibara Java Version: bits-2.1.0 License: Apache-2.0

kandi X-RAY | bits Summary

kandi X-RAY | bits Summary

bits is a Java library typically used in Utilities, Serialization applications. bits has no vulnerabilities, it has build file available, it has a Permissive License and it has high support. However bits has 26 bugs. You can download it from GitHub.

Full documentation is available via the [javadocs][0] packaged with the release, but this is an overview of some the of the key abstractions. All the classes named below are found in the com.tomgibara.bits package:. Significantly, all BitStore implementations provide openReader() and openWriter() methods allowing them to serve as general-purpose bit streaming buffers. Additionally, several general purpose reader/writer implementations are available via the package entry point, the com.tomgibara.bits.Bits class including implementations that wrap byte array, int array, ByteBuffer InputStream and ReadStream and CharSequence among others. Additionally, a large number of dedicated BitStore implementations are also provided for convenient interoperability with established Java types including byte array, boolean array, BigInteger, BitSet, CharSequence and primitive long packed bits.

            kandi-support Support

              bits has a highly active ecosystem.
              It has 24 star(s) with 4 fork(s). There are 4 watchers for this library.
              It had no major release in the last 12 months.
              There are 1 open issues and 0 have been closed. On average issues are closed in 839 days. There are 2 open pull requests and 0 closed requests.
              It has a negative sentiment in the developer community.
              The latest version of bits is bits-2.1.0

            kandi-Quality Quality

              bits has 26 bugs (4 blocker, 3 critical, 6 major, 13 minor) and 321 code smells.

            kandi-Security Security

              bits has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              bits code analysis shows 0 unresolved vulnerabilities.
              There are 27 security hotspots that need review.

            kandi-License License

              bits is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              bits releases are available to install and integrate.
              Build file is available. You can build the component from source.
              Installation instructions are not available. Examples and code snippets are available.
              bits saves you 6468 person hours of effort in developing the same functionality from scratch.
              It has 13448 lines of code, 1830 functions and 107 files.
              It has high code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed bits and discovered the below as its top functions. This is intended to give you an instant insight into bits implemented functionality, and help decide if they suit your requirements.
            • Write boolean
            • Writes a single value to the sequence
            • Get the buffer corresponding to a byte
            • Writes number of bits
            • Read data from an input stream
            • Read from start and end address
            • Reads bits from the given reader
            • Rotate an adjacency value
            • Compute the gcd of int b
            • Write count bits
            • Returns the address bits as a byte array
            • Writes a subset to this set
            • Dumps the contents of this field
            • Gets bits
            • Set bits
            • Reads a number of bytes
            • Partial permutations
            • Gets bits as integer
            • Read bits until one bit is found
            • Returns the address as long array
            • Writes boolean
            • Rotate value
            • Convert this address to an integer array
            • Returns an immutable view of the specified store
            • Creates and returns a new copy of the given BitStore
            • Shuffles the array
            Get all kandi verified functions for this library.

            bits Key Features

            No Key Features are available at this moment for bits.

            bits Examples and Code Snippets

            No Code Snippets are available at this moment for bits.

            Community Discussions


            Elixir: How to get bit_size of an Integer variable?
            Asked 2021-Jun-15 at 16:38

            I need to get the size of bits used in one Integer variable.

            like this:



            Answered 2021-May-18 at 21:30


            Why does 0b1111_1111 cause a compiler error "int cannot be converted to byte" but not 0b111_1111?
            Asked 2021-Jun-15 at 10:56
            byte b = 0b1111_1111;
            byte c = 0b111_1111;
            byte d = 0b0111_1111;


            Answered 2021-Jun-15 at 10:44

            All basic integer types in Java are signed. To be exact, byte, short, int and long are signed big endian two complement integers. That means that they run from - 2n-1 to 2n-1 - 1 where n is the number of bits - 8 for a byte (Byte.SIZE in Java), and therefore the range is from -128 to 127.

            The number you are using is always an integer; number literals always are. However, the integer is actually the value 0x000000FF in hexadecimals. That cannot be stored as it is higher than 127. You can however do an explicit conversion; your value does consist of 8 bits after all.



            postfix and openJDK 11: "No appropriate protocol (protocol is disabled or cipher suites are inappropriate)"
            Asked 2021-Jun-15 at 08:30

            I know there are some other questions (with answers) to this topic. But no of these was helpful for me.

            I have a postfix server (postfix 3.4.14 on debian 10) with following configuration (only the interesting section):



            Answered 2021-Jun-15 at 08:30

            Here I'm wondering about the line [in s_client]
            New, TLSv1/SSLv3, Cipher is ECDHE-RSA-AES256-GCM-SHA384

            You're apparently using OpenSSL 1.0.2, where that's a basically useless relic. Back in the days when OpenSSL supported SSLv2 (mostly until 2010, although almost no one used it much after 2000), the ciphersuite values used for SSLv3 and up (including all TLS, but before 2014 OpenSSL didn't implement higher than TLS1.0) were structured differently than those used for SSLv2, so it was important to qualify the ciphersuite by the 'universe' it existed in. It has almost nothing to do with the protocol version actually used, which appears later in the session-param decode:



            My program is exiting with return value 3221225620
            Asked 2021-Jun-15 at 04:50

            I have written a cpp code for array rotation and the file handling part is a bit tricky for me. The code itself is correct but even though the files are in the same directory as the code it is not working for some reason



            Answered 2021-Jun-15 at 04:36

            here shows a possible error:

            3221225620 (0xC0000094): Zero Division Error

            means that a divisor in your code could sometime be zero.

            as for your code(line 20: d = d % n;), when your n is 0, the output will show return value 3221225620

            so please check your data in "input.txt"



            CRC-16 output message check
            Asked 2021-Jun-14 at 21:38

            I have a program that computes the CRC of characters using the CRC-16. The program is given below.



            Answered 2021-Jun-14 at 21:38

            The code just needs to declare buf[11] so there's room to append the CRC, then append the CRC. Some other were changes made to work with Visual Studio (the indented blocks used for local variables). The CRC calculation could be simplified.



            Removing a specific element from a string in C++
            Asked 2021-Jun-14 at 19:02

            I was trying to remove X from a given string, the code compiles and runs but there is no output shown. I guess the problem is where I have to use the 'cout' operator.

            Here is my Code:



            Answered 2021-Jun-11 at 06:56

            You have a few issues in your code, the ones I can spot right away are:

            if(str[0]='\0') - this is an assignment, not a comparison. Your entire string will be replaced with \0-characters - no characters will be skipped because this:

            if(str[0]!='x'||str[0]!='X') is always true. Ask yourself if x is different from x (false) OR X (true). False or true = true.

            The check should be implemented something like (str[0] != 'x' && str[0] != 'X').

            Edit: One more issue.

            The overall logic will not work (-ish). The part where you run through the string and compress it is correct enough. But you try to run to the end and then print the string, however at that point you are only holding the end of the string (the null termination), so no matter what else you have done you will only print that (aka. print nothing).

            Instead, once you are done compressing the xs out of the string, you need to return to the beginning of the string and then print that. The easy way is to print in main, or you can split your function into an outer+inner function like:



            Calling shell script from system c++ function making the shell script running as different user
            Asked 2021-Jun-14 at 18:03

            I am using the system c++ call to execute the shell script the caller program is running as root but the shell sctipt which is called form the c++ code is running as different user.

            How can I make sure the shell script should also run as root user like the c++ binary. I don't want to rely on using sudo command as it can ask for password.



            Answered 2021-Jun-14 at 18:03

            A few bits of documentation to start:

            From man 3 system's caveats section:

            Do not use system() from a privileged program (a set-user-ID or set-group-ID program, or a program with capabilities) because strange values for some environment variables might be used to subvert system integrity. For example, PATH could be manipulated so that an arbitrary program is executed with privilege. Use the exec(3) family of functions instead, but not execlp(3) or execvp(3) (which also use the PATH environment variable to search for an executable).

            system() will not, in fact, work properly from programs with set-user-ID or set-group-ID privileges on systems on which /bin/sh is bash version 2: as a security measure, bash 2 drops privileges on startup. Debian uses a different shell, dash(1), which does not do this when invoked as sh.)

            And from the bash manual's description of the -p command line argument (Emphasis added):

            Turn on privileged mode. In this mode, the $BASH_ENV and $ENV files are not processed, shell functions are not inherited from the environment, and the SHELLOPTS, BASHOPTS, CDPATH and GLOBIGNORE variables, if they appear in the environment, are ignored. If the shell is started with the effective user (group) id not equal to the real user (group) id, and the -p option is not supplied, these actions are taken and the effective user id is set to the real user id. If the -p option is supplied at startup, the effective user id is not reset. Turning this option off causes the effective user and group ids to be set to the real user and group ids.

            So even if your /bin/sh doesn't drop privileges when run, bash will when it's run in turn without explicitly telling it not to.

            So one option is to scrap using system(), and do a lower-level fork()/exec() of bash -p your-script-name.

            Some other approaches to allowing scripts to run at elevated privileges are mentioned in Allow suid on shell scripts. In particular the answer using setuid() to change the real UID looks like it's worth investigating.

            Or configure sudo to not require a password for a particular script for a given user.

            Also see Why should I not #include ?



            glBitmap: bitmap size issue
            Asked 2021-Jun-14 at 10:38

            I have a doubt trying to understand and use glBitmap function. I started from this example and trying to draw a 40x40 "bitmap" and avoiding a situation like this I tried this:

            40 x 40 is 1600 bits -> so I need 200 bytes of info (1600/8)



            Answered 2021-Jun-14 at 10:38

            You missed to set the alignment. By default OpenGL assumes that the start of each row of the raster is aligned to 4 bytes. This is because the GL_UNPACK_ALIGNMENT parameter by default is 4. Each row in the raster has 5 bytes (40 / 8 = 5). Therefore you need to change the alignment to 1:



            xorshift and its variations give unrandom results in C
            Asked 2021-Jun-14 at 09:54

            I'm trying to create a pseudo-random generator API, but numbers generated by xorshift have unrandom nature. You can see the algorithm and tests here:



            Answered 2021-Jun-14 at 09:54

            You're looking at random numbers uniformly distributed between 0 and 18,446,744,073,709,551,615 (UINT64_MAX). All numbers between 10,000,000,000,000,000,000 and 18,446,744,073,709,551,615 start with a 1, so the skewed distribution is to be expected.



            c++, what happens when an lvalue is passed to T&&?
            Asked 2021-Jun-14 at 08:19
            void g(T&& val)
                std::vector v;
            int main()
                // g(2);
                int i;


            Answered 2021-Jun-14 at 08:19
            1. Your universal reference resolves to int for g(2) and int& for g(i)
            2. You can't have a std::vector of a reference type (see this explanation).


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install bits

            You can download it from GitHub.
            You can use bits like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the bits component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer For Gradle installation, please refer .


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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