stringbuilder.cc

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#include "assert/assert.h"
 
#include "base/stringbuilder.h"
 
 
 
namespace eu
{
 
namespace
{
    bool can_add_to(const std::vector<char>& data)
    {
        // empty strings are ok
        if(data.empty()) { return true; }
 
        // string is valid if it doesn't end with a null terminator
        return *data.rbegin() != '\0';
    }
}
 
 
bool StringBuilder::has_content() const
{
    return data.empty() == false;
}
 
 
void StringBuilder::clear()
{
    data.clear();
}
 
 
StringBuilder& StringBuilder::add_char(char c)
{
    ASSERT(can_add_to(data));
    data.emplace_back(c);
    return *this;
}
 
 
StringBuilder& StringBuilder::add_string(const std::string& str)
{
    ASSERT(can_add_to(data));
    for(char c: str)
    {
        data.emplace_back(c);
    }
 
    return *this;
}
 
 
StringBuilder& StringBuilder::add_view(const std::string_view& str)
{
    ASSERT(can_add_to(data));
    for(char c: str)
    {
        data.emplace_back(c);
    }
 
    return *this;
}
 
 
std::string StringBuilder::to_string()
{
    ASSERT(can_add_to(data));
    data.emplace_back('\0'); // now we no longer can add to it!
    return data.data();
}
 
}