static int prefixLength()

in host/common/win32/extendedlengthpath.h [347:379]

• 27 lines of code
• 19 McCabe index (conditional complexity)

    static int prefixLength(wchar_t const * extName, ///< name to check
                            size_t len,              ///< length of name
                            bool& uncPrefix)         ///< set to true if unc prefix found, else set to false
        {
            uncPrefix = false;

            if (len > 6) {
                // all extended-legnth paths begin with "\\?\"
                if ((L'\\' == extName[0] || L'/' == extName[0])
                    && (L'\\' == extName[1] || L'/' == extName[1])
                    && L'?' == extName[2]
                    && (L'\\' == extName[3] || L'/' == extName[3])) {
                    // check if unc
                    if (len > 8
                        && L'U' == extName[4]
                        && L'N' == extName[5]
                        && L'C' == extName[6]
                        && (L'\\' == extName[7] || L'/' == extName[7])) {
                        uncPrefix = true;
                        return 8;
                    }

                    // check if full path
                    if (iswalpha(extName[4])
                        && L':' == extName[5]
                        && (L'\\' == extName[6] || L'/' == extName[6])) {
                        return 4;
                    }
                }
            }

            return 0;
        }