add drop_slash(), relative_to and proximate_to don't normalize

Author: scivision

+stdlib/drop_slash.m

@@ -0,0 +1,21 @@
+%% DROP_SLASH drop repeated and trailing slash
+
+function d = drop_slash(p)
+arguments
+  p (1,1) string
+end
+
+d = stdlib.posix(p);
+
+% drop repeated slashes inside string
+d = regexprep(d, "/+", "/");
+
+if d == "/"
+  return;
+end
+
+if ~ispc || (strlength(d) ~= 3 || d ~= stdlib.root(p))
+  d = strip(d, "right", "/");
+end
+
+end

+stdlib/relative_to.m

@@ -7,22 +7,24 @@
 end
 
 % must remove trailing slashes
-base = stdlib.normalize(base, true);
-other = stdlib.normalize(other, true);
+base = stdlib.drop_slash(base);
+other = stdlib.drop_slash(other);
 
 if base == other
   r = ".";
-else
-  b = java.io.File(base).toPath();
-  o = java.io.File(other).toPath();
-  try
-    r = stdlib.posix(b.relativize(o));
-  catch e
-    if contains(e.message, 'java.lang.IllegalArgumentException')
-      r = "";
-    else
-      rethrow(e);
-    end
+  return
+end
+
+b = java.io.File(base).toPath();
+o = java.io.File(other).toPath();
+try
+  r = stdlib.posix(b.relativize(o));
+catch e
+  if contains(e.message, 'java.lang.IllegalArgumentException')
+    disp('ow')
+    r = "";
+  else
+    rethrow(e);
   end
 end
 

test/TestFilePure.m

@@ -61,7 +61,7 @@
 {'Hello', 'Hello', '.'}, ...
 {'Hello', 'Hello/', '.'}, ...
 {'./this/one', './this/two', '../two'}, ...
-{'/path/same', '/path/same/hi/..', '.'}, ...
+{'/path/same', '/path/same/hi/..', 'hi/..'}, ...
 {'', '/', ''}, ...
 {'/', '', ''}, ...
 {'/', '/', '.'}, ...
@@ -71,8 +71,7 @@
 {'/a/b', '/a/b', '.'}, ...
 {'/a/b', '/a', '..'}, ...
 {'/a/b/c/d', '/a/b', '../..'}, ...
-{'/this/one', '/this/two', '../two'}, ...
-{'/path/same', '/path/same/hi/..', '.'}};
+{'/this/one', '/this/two', '../two'}};
 
 p_proximate_to = p_relative_to;