#include "config.h"
#include "CString.h"
using std::min;
namespace WebCore {
CString::CString(const char* str)
{
init(str, strlen(str));
}
CString::CString(const char* str, unsigned length)
{
init(str, length);
}
void CString::init(const char* str, unsigned length)
{
if (!str)
return;
m_buffer = CStringBuffer::create(length + 1);
memcpy(m_buffer->mutableData(), str, length);
m_buffer->mutableData()[length] = '\0';
}
const char* CString::data() const
{
return m_buffer ? m_buffer->data() : 0;
}
char* CString::mutableData()
{
copyBufferIfNeeded();
if (!m_buffer)
return 0;
return m_buffer->mutableData();
}
unsigned CString::length() const
{
return m_buffer ? m_buffer->length() - 1 : 0;
}
CString CString::newUninitialized(size_t length, char*& characterBuffer)
{
CString result;
result.m_buffer = CStringBuffer::create(length + 1);
char* bytes = result.m_buffer->mutableData();
bytes[length] = '\0';
characterBuffer = bytes;
return result;
}
void CString::copyBufferIfNeeded()
{
if (!m_buffer || m_buffer->hasOneRef())
return;
int len = m_buffer->length();
RefPtr<CStringBuffer> m_temp = m_buffer;
m_buffer = CStringBuffer::create(len);
memcpy(m_buffer->mutableData(), m_temp->data(), len);
}
bool operator==(const CString& a, const CString& b)
{
if (a.isNull() != b.isNull())
return false;
if (a.length() != b.length())
return false;
return !strncmp(a.data(), b.data(), min(a.length(), b.length()));
}
}