StdLib.cpp

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#include "StdLib.hpp"
 
namespace Phasor
{
 
char **StdLib::argv = nullptr;
int    StdLib::argc = 0;
char **StdLib::envp = nullptr;
 
void StdLib::registerFunctions(VM &vm)
{
    vm.registerNativeFunction("include_stdio", registerIOFunctions);
    vm.registerNativeFunction("include_stdsys", registerSysFunctions);
    vm.registerNativeFunction("include_stdmath", registerMathFunctions);
    vm.registerNativeFunction("include_stdstr", registerStringFunctions);
    vm.registerNativeFunction("include_stdtype", registerTypeConvFunctions);
    vm.registerNativeFunction("include_stdfile", registerFileFunctions);
    vm.registerNativeFunction("include_stdregex", registerRegexFunctions);
}
 
int StdLib::dupenv(std::string &out, const char *name, char *const argp[])
{
    if (!name || !argp)
    {
        return 1;
    }
 
    const size_t key_len = strlen(name);
 
    const char *val = NULL;
    for (size_t i = 0; argp[i]; i++)
    {
        const char *entry = argp[i];
        if (strncmp(entry, name, key_len) == 0 && entry[key_len] == '=')
        {
            val = entry + key_len + 1;
            break;
        }
    }
    if (!val)
    {
        out.clear();
        return 2;
    }
 
    out = std::string(val);
    return 0;
}
 
void StdLib::checkArgCount(const std::vector<Value> &args, size_t minimumArguments, const std::string &name,
                           bool allowMoreArguments)
{
    if (args.size() < minimumArguments)
    {
        throw std::runtime_error("Function '" + name + "' expects at least " + std::to_string(minimumArguments) +
                                 " arguments, but got " + std::to_string(args.size()));
    }
    if (!allowMoreArguments && args.size() > minimumArguments)
    {
        throw std::runtime_error("Function '" + name + "' expects exactly " + std::to_string(minimumArguments) +
                                 " arguments, but got " + std::to_string(args.size()));
    }
}
 
} // namespace Phasor