<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/139028>139028</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang-c/Feature Request] add clang_getCString_length
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          illusory0x0
      </td>
    </tr>
</table>

<pre>
    If CXString::data point to [std::string_view](https://en.cppreference.com/w/cpp/string/basic_string_view), then we needn't use `strlen` to count length.

```c++
unsigned clang_getCString_length(CXString string) {
  if (string.private_flags == (unsigned) CXS_StringBuf) {
    return static_cast<const cxstring::CXStringBuf *>(string.data)->Data.size();
  }
  return strlen(static_cast<const char *>(string.data));
}
```
</pre>
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