From c09cd7512491cee1e82c1ad8128ce9fd4bc3f79b Mon Sep 17 00:00:00 2001 From: Boris Kolpackov Date: Fri, 22 Sep 2017 23:32:28 +0200 Subject: Initial modularization with both Clang and VC hacks Note: gave up on VC about half way though. --- libbutl/path-map.hxx | 148 --------------------------------------------------- 1 file changed, 148 deletions(-) delete mode 100644 libbutl/path-map.hxx (limited to 'libbutl/path-map.hxx') diff --git a/libbutl/path-map.hxx b/libbutl/path-map.hxx deleted file mode 100644 index fa06bd5..0000000 --- a/libbutl/path-map.hxx +++ /dev/null @@ -1,148 +0,0 @@ -// file : libbutl/path-map.hxx -*- C++ -*- -// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd -// license : MIT; see accompanying LICENSE file - -#ifndef LIBBUTL_PATH_MAP_HXX -#define LIBBUTL_PATH_MAP_HXX - -#include // min() - -#include -#include - -namespace butl -{ - // prefix_map for filesystem paths - // - // Important: the paths should be normalized but can use different directory - // separators and different case on case-insensitive platforms. - // - // Note that the path's representation of POSIX root ('/') is inconsistent - // in that we have a trailing delimiter at the end of the path (its "proper" - // representation would have been an empty string but that would have - // clashed with empty paths). To work around this snag, this implementation, - // during key comparison, detects '/' and treats it as empty. Note that the - // map will still store the key as you have first inserted it. So if you - // want a particular representation (i.e., empty or '/'), pre- populate the - // map with it. - // - template - struct compare_prefix> - { - typedef basic_path key_type; - - typedef C delimiter_type; - typedef typename key_type::string_type string_type; - typedef typename key_type::size_type size_type; - typedef typename key_type::traits traits_type; - - explicit - compare_prefix (delimiter_type) {} - - bool - operator() (const key_type& x, const key_type& y) const - { - const string_type& xs (x.string ()); - const string_type& ys (y.string ()); - - return compare (xs.c_str (), - root (xs) ? 0 : xs.size (), - ys.c_str (), - root (ys) ? 0 : ys.size ()) < 0; - } - - bool - prefix (const key_type& p, const key_type& k) const - { - const string_type& ps (p.string ()); - const string_type& ks (k.string ()); - - return prefix (root (ps) ? string_type () : ps, - root (ks) ? string_type () : ks); - } - - protected: - bool - prefix (const string_type& p, const string_type& k) const - { - // The same code as in prefix_map but using our compare(). - // - size_type pn (p.size ()), kn (k.size ()); - return pn == 0 || // Empty key is always a prefix. - (pn <= kn && - compare (p.c_str (), pn, k.c_str (), pn == kn ? pn : pn + 1) == 0); - } - - int - compare (const C* x, size_type xn, - const C* y, size_type yn) const - { - size_type n (std::min (xn, yn)); - int r (traits_type::compare (x, n, y, n)); - - if (r == 0) - { - // Pretend there is a delimiter characters at the end of the - // shorter string. - // - char xc (xn > n ? x[n] : (xn++, traits_type::directory_separator)); - char yc (yn > n ? y[n] : (yn++, traits_type::directory_separator)); - r = traits_type::compare (&xc, 1, &yc, 1); - - // If we are still equal, then compare the lengths. - // - if (r == 0) - r = (xn == yn ? 0 : (xn < yn ? -1 : 1)); - } - - return r; - } - - static bool - root (const string_type& p) - { - return p.size () == 1 && key_type::traits::is_separator (p[0]); - } - }; - - // Note that the delimiter character is not used (is_delimiter() from - // path_traits is used instead). - // - template - struct path_map_impl: prefix_map - { - using base = prefix_map; - using base::base; - - using iterator = typename base::iterator; - using const_iterator = typename base::const_iterator; - - // Find the most qualified entry that is a superpath of this path. - // - iterator - find_sup (const P& p) - { - // Get the greatest less than, if any. We might still not be a sub. Note - // also that we still have to check the last element if upper_bound() - // returned end(). - // - auto i (this->upper_bound (p)); - return i == this->begin () || !p.sub ((--i)->first) ? this->end () : i; - } - - const_iterator - find_sup (const P& p) const - { - auto i (this->upper_bound (p)); - return i == this->begin () || !p.sub ((--i)->first) ? this->end () : i; - } - }; - - template - using path_map = path_map_impl; - - template - using dir_path_map = path_map_impl; -} - -#endif // LIBBUTL_PATH_MAP_HXX -- cgit v1.1