diff options
Diffstat (limited to 'libbutl/default-options.mxx')
| -rw-r--r-- | libbutl/default-options.mxx | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/libbutl/default-options.mxx b/libbutl/default-options.mxx index 11f7bb2..2d44333 100644 --- a/libbutl/default-options.mxx +++ b/libbutl/default-options.mxx @@ -152,12 +152,25 @@ LIBBUTL_MODEXPORT namespace butl AS merge_default_arguments (const default_options<O>&, const AS&, F&&); - // Find a common start (parent) directory stopping at home or root - // (excluding). + // Find a common start (parent) directory for directories specified as an + // iterator range, stopping at home or root (excluding). Optionally pass a + // function resolving an iterator into a directory in a way other than just + // dereferencing it. The function signature is: // - LIBBUTL_SYMEXPORT optional<dir_path> - default_options_start (const optional<dir_path>& home_dir, - const std::vector<dir_path>&); + // const dir_path& (I) + // + template <typename I, typename F> + optional<dir_path> + default_options_start (const optional<dir_path>& home, I, I, F&&); + + template <typename I> + inline optional<dir_path> + default_options_start (const optional<dir_path>& home, I b, I e) + { + return default_options_start (home, + b, e, + [] (I i) -> const dir_path& {return *i;}); + } } #include <libbutl/default-options.ixx> |