HCL color to RGB and backward

I need an algorithm to convert the HCL color to RGB and backward RGB to HCL keeping in mind that these color spaces have different gamuts (I need to constrain the HCL colors to those that can be...

Share variables between makefiles

I have a directory structure where I want one main makefile in my main folder, and then another makefile in both my test and src folder. In my main makefile, I have directives for both test / all...

Debugging json_t object with GDB

I have a application in C programming which uses jansson library(json library written in C). I'm trying to view value of json_t object in gdb but it just prints (gdb) p jmsg $20 = (json_t *)...

Send Events in JSON format via websockets

I am trying to form a JSON Response using jansson lib on the server side and below is the code snippet to frame the JSON response to the request made by the client (written in...

trying to make a average list for a bowling club

I'm trying to make an average list for a bowling club. I have a database with the following tables: team_medlem (medlem_id, name, address, etc) team_samling (match_id, lag_id, borta (0 = home...

How to specify number of digits to output for real numbers in Jansson

How can I specify a fixed number of digits to output after the decimal point when using Jansson's json_dumps or json_dumpf() to output real numbers? I tried Jansson's new JSON_REAL_PRECISION flag,...

Adapting a perl script to convert bibitem to BibTeX

I wrote a journal article some time ago that, luckily, was accepted. The publisher kindly sent me the LaTeX file derived from the article. I now want to include the LaTeX code into my PhD thesis....

Locale-invariant string processing with strtod strtof atof printf?

Are there any plans for adding versions of C standard library string processing functions that are invariant under current locale? Currently there are lots of fragile workarounds, for example,...

C jansson encoding(?) issue with json_pack & json_dumps

I have this simple code snippet: char acks[20] = "1, 2, 3, 4, 5"; json_t *data; data = json_pack("{si}", "acks", acks); rdata = json_dumps(data, JSON_COMPACT); printf("data:%s", rdata); The...

Install multiple yum packages on Centos(node) via Ansible?

Here is the part of YAMLcode that i am trying to run on a node which has operating system, Centos-7...... file hierarchy is --> roles/install_tools/tasks/main.yml its not working fine, YAML syntax...

How to install mod_auth_openidc module in an Apache server running on Docker

I am trying to add the mod_auth_openidc module to an Apache server running on Docker. After adding LoadModule auth_openidc_module modules/mod_auth_openidc.so, I create the image and run it,...

CPUminer config file faulty

I'm trying to compile my CPUminer (linux/raspbian) and I'm getting the following error: ./configure: line 5688: syntax error near unexpected token `,' ./configure: line 5688:...

Git not in PATH for Homebrew on Mac

A couple days ago, I ran brew update, trying to update homebrew on my Mac (I use OSX 10.9.5). When I ran this, I got this back dyld: Library not loaded:...

Bitbake build for qpid-cpp-1.39.0 fails

I must preface this saying I have very little knowledge of Yocto/Bitbake, make, cmake, autoconf, etc. I have an application, written in C++, that I have been unable to get built. The issue I am...

Unable to distinguish between JSON Object/Array/String

I am trying to use the Jansson library to parse a JSON string. I am unable to parse it correctly. Here is my code in C++ std::string JSONString = "{\"Hostages\": [{\"Rescue\": \"help...

How do I create Docker container with asterisk 16

I want to create a Docker with asterisk 16, I can register my sip extension but I don't listen anything. I can go to 8088 port too, modifying http.conf Also I edited rtp.conf...

How to use the POSIX package of Guile 2.2?

Context: I am currently coding the generate-ninja-build.scm script in git commit cb7530e3ff10 of my GPLv3+ project bismon (funded by H2020 research projects). This is contractually some Linux free...

Laravel valet won't install

I had some problems with valet. I have used it for a while no. No i like to reinstall valet. But i don't get it installed. This is what i did before (whit help)...

How do I add a library dependency in an Azure Sphere Visual Studio Project?

I am building an Azure Sphere C application, starting from the HTTPS_Curl_Easy sample project. I need json parsing, so I downloaded the Jansson library code. The project that Jansson generates...

Installing janus-gateway error on CentOS7

I want to install janus-gateway on CentOS7. I read the following document and tried installation. https://github.com/meetecho/janus-gateway/blob/master/README.md git clone...

CMake can not find package

I am trying to compile avro-c 1.9.1 on Ubuntu 19.04. CMake fails with CMake Error at CMakeLists.txt:188 (message): libjansson >=2.3 not found The section of CMakeLists.txt is # Jansson JSON...

Mysql will not install due to mariadb install but mariadb is not installed

Been trying for hours to get mysql installed but it failed due to a conflict. This is a brand newly installed CentOS 8 x64 (latest) and it's fully updated. There are no custom packages installed...

How to convert librdkafka payload to json to get a parameter value?

I'm playing around with the consumer.c example file for librdkafka and I'm trying to figure out how to convert the rkm payload (that is printed out at line 244) to json so that I can grab a...

Why does my code stop crashing after adding aSan library?

I am currently debugging a C code. This is basically a client from a data collection platform and I was getting weird bugs reading from a linked list. The problem basically is that the "next"...

install sshuttle in a Google sdk docker image

I am struggling to build this baby Dockerfile: FROM google/cloud-sdk:286.0.0 RUN apt-get update && apt-get install -y sshuttle I am running on Ubuntu 18 with Docker version 19.03.8, build...

Shared library symbol conflicts - C

I have an application which is linked to json-c and a third party library. This third party library is linked to libjansson library. So when I execute my application, it crashes due to memory...

Compiling NSS module in Docker Alpine - fatal error: nss.h: No such file or directory

I built a SSH bastion image which allows customers to plug themselves over reverse SSH (both of them has an assigned port thanks to permitopen clause on authorized keys). I achieved this through a...

Brew Install Httpd: Welcome to Nginx?

I'm trying to install the brew package httpd (apache). I'm so confused. Every time I do and navigate to http://localhost:8080 I get a big welcome screen that says "Welcome to Nginx." I don't...

Trouble with installing cocoapods: Library not loaded: libssl.1.0.0.dylib

I'm installing cocoapods like this sudo gem install cocoapods which gives me this error: ERROR: Loading command: install (LoadError) ...

Can the Azure Storage REST API send the response in JSON format?

I am developing a library for working with various types of cloud based queue services. One of those services is the Azure Queue Storage REST API. For the Amazon SQS service I can send an Accept:...

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