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authorBoris Kolpackov <boris@codesynthesis.com>2017-09-22 23:32:28 +0200
committerBoris Kolpackov <boris@codesynthesis.com>2017-09-22 23:32:28 +0200
commitc09cd7512491cee1e82c1ad8128ce9fd4bc3f79b (patch)
treea659ed768d849130ab5780a11b7f791a463a1a91 /libbutl/path-map.hxx
parent2a00871f07067f8f9e2de08bb9c8f50e1bf6a650 (diff)
Initial modularization with both Clang and VC hacks
Note: gave up on VC about half way though.
Diffstat (limited to 'libbutl/path-map.hxx')
-rw-r--r--libbutl/path-map.hxx148
1 files changed, 0 insertions, 148 deletions
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 <algorithm> // min()
-
-#include <libbutl/path.hxx>
-#include <libbutl/prefix-map.hxx>
-
-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 <typename C, typename K>
- struct compare_prefix<basic_path<C, K>>
- {
- typedef basic_path<C, K> 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 <typename P, typename T>
- struct path_map_impl: prefix_map<P, T, P::traits::directory_separator>
- {
- using base = prefix_map<P, T, P::traits::directory_separator>;
- 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 <typename T>
- using path_map = path_map_impl<path, T>;
-
- template <typename T>
- using dir_path_map = path_map_impl<dir_path, T>;
-}
-
-#endif // LIBBUTL_PATH_MAP_HXX