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Diffstat (limited to 'src/util/optstr.h')
-rw-r--r-- | src/util/optstr.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/util/optstr.h b/src/util/optstr.h new file mode 100644 index 0000000..f8a0b4c --- /dev/null +++ b/src/util/optstr.h @@ -0,0 +1,41 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +#ifndef INKSCAPE_UTIL_OPTSTR_H +#define INKSCAPE_UTIL_OPTSTR_H +/* + * Author: PBS <pbs3141@gmail.com> + * Copyright (C) 2022 Authors + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#include <string> +#include <optional> + +namespace Inkscape { +namespace Util { + +inline bool equal(std::optional<std::string> const &a, char const *b) +{ + return a && b ? *a == b : !a && !b; +} + +inline auto to_opt(char const *s) +{ + return s ? std::make_optional<std::string>(s) : std::nullopt; +} + +inline auto to_cstr(std::optional<std::string> const &s) +{ + return s ? s->c_str() : nullptr; +} + +inline bool assign(std::optional<std::string> &a, char const *b) +{ + if (equal(a, b)) return false; + a = to_opt(b); + return true; +} + +} // namespace Util +} // namespace Inkscape + +#endif // INKSCAPE_UTIL_OPTSTR_H |