/// <summary>
/// Replaces a value of a CEF string to a new value.
/// </summary>
/// <param name="str">The pointer to a CEF string.</param>
/// <param name="value">The string to replace.</param>
/// <remarks>This method frees memory allocated for the old string.</remarks>
public static void Replace(cef_string_t *str, string value)
{
if (str == null)
{
throw new ArgumentNullException(nameof(str));
}
unchecked
{
cef_string_utf16_t *s = (cef_string_utf16_t *)str;
if (s->str != default && s->dtor != default)
{
s->Dtor(s->str);
}
if (value == null)
{
s->str = null;
s->length = default;
s->dtor = null;
}
else
{
s->str = (char *)Marshal.StringToHGlobalUni(value);
s->length = unchecked ((UIntPtr)value.Length);
s->dtor = CefString.DestructorAddress;
}
}
}
/// <summary>
/// Allocates a managed <see cref="string"/> and copies a CEF string into it.
/// </summary>
/// <param name="str">The pointer to the CEF string.</param>
/// <returns>A managed string that holds a copy of the CEF string.</returns>
public static string Read(cef_string_t *str)
{
unchecked
{
cef_string_utf16_t *s = (cef_string_utf16_t *)str;
if (s == default || s->str == default)
{
return(null);
}
return(Marshal.PtrToStringUni((IntPtr)s->str, (int)s->length));
}
}
/// <summary>
/// Frees memory allocated for the <see cref="cef_string_t"/>'s value.
/// </summary>
/// <param name="str">The pointer to the CEF string.</param>
public static void Free(cef_string_t *str)
{
cef_string_utf16_t *s = (cef_string_utf16_t *)str;
if (s->dtor != null)
{
s->Dtor(s->str);
s->dtor = default;
}
s->str = default;
s->length = UIntPtr.Zero;
}
/// <summary>
/// Allocates a managed <see cref="string"/>, copies <see cref="cef_string_userfree_t"/>'s
/// value into it and frees memory allocated for the <see cref="cef_string_userfree_t"/>'s
/// value.
/// </summary>
/// <param name="str">The pointer to the CEF string.</param>
/// <returns>A managed string that holds a copy of the CEF string.</returns>
public static string ReadAndFree(cef_string_userfree_t str)
{
cef_string_utf16_t *s = str.Base.Base;
if (s == null)
{
return(null);
}
string rv = Marshal.PtrToStringUni((IntPtr)s->str, (int)s->length);
CefNativeApi.cef_string_userfree_utf16_free(str.Base);
return(rv);
}
/// <summary>
/// Allocates a managed <see cref="string"/>, copies <see cref="cef_string_t"/>'s value
/// into it and frees memory allocated for the <see cref="cef_string_t"/>'s value.
/// </summary>
/// <param name="str">The pointer to the CEF string.</param>
/// <returns>A managed string that holds a copy of the CEF string.</returns>
public static string ReadAndFree(cef_string_t *str)
{
cef_string_utf16_t *s = (cef_string_utf16_t *)str;
if (s == null || s->str == null)
{
return(null);
}
string rv = Marshal.PtrToStringUni((IntPtr)s->str, (int)s->length);
if (s->dtor != default)
{
s->Dtor(s->str);
s->dtor = default;
}
s->str = default;
s->length = UIntPtr.Zero;
return(rv);
}
