From 6cb960121c4195dd9d12c92d4f3ff2819fad143e Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 1 Dec 2016 14:59:32 +0200
Subject: Add path.canonicalize() function

---
 build2/functions-path.cxx      | 24 ++++++++++++++++++++++++
 tests/function/path/testscript | 13 ++++++++++++-
 2 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/build2/functions-path.cxx b/build2/functions-path.cxx
index e21609c..243f0d7 100644
--- a/build2/functions-path.cxx
+++ b/build2/functions-path.cxx
@@ -93,6 +93,30 @@ namespace build2
       return r;
     };
 
+    // canonicalize
+    //
+    f["canonicalize"] = [](path p) {p.canonicalize (); return p;};
+    f["canonicalize"] = [](dir_path p) {p.canonicalize (); return p;};
+
+    f["canonicalize"] = [](paths v) {for (auto& p: v) p.canonicalize (); return v;};
+    f["canonicalize"] = [](dir_paths v) {for (auto& p: v) p.canonicalize (); return v;};
+
+    f[".canonicalize"] = [](names ns)
+    {
+      // For each path decide based on the presence of a trailing slash
+      // whether it is a directory. Return as untyped list of (potentially
+      // mixed) paths.
+      //
+      for (name& n: ns)
+      {
+        if (n.directory ())
+          n.dir.canonicalize ();
+        else
+          n.value = convert<path> (move (n)).canonicalize ().string ();
+      }
+      return ns;
+    };
+
     // normalize
     //
     f["normalize"] = [](path p) {p.normalize (); return p;};
diff --git a/tests/function/path/testscript b/tests/function/path/testscript
index 8b527e3..e1f0a36 100644
--- a/tests/function/path/testscript
+++ b/tests/function/path/testscript
@@ -10,6 +10,17 @@ else
   s = '\'
 end
 
+: canonicalize
+:
+{
+  $* <'print $canonicalize([path] a/b)'           >"a$(s)b"            : path
+  $* <'print $canonicalize([paths] a/b a/c)'      >"a$(s)b a$(s)c"     : paths
+  $* <'print $canonicalize([dir_path] a/b)'       >"a$(s)b$s"          : dir-path
+  $* <'print $canonicalize([dir_paths] a/b a/c/)' >"a$(s)b$s a$(s)c$s" : dir-paths
+  $* <'print $path.canonicalize(a/b)'             >"a$(s)b"            : untyped
+  $* <'print $path.canonicalize(a/b/ a/c)'        >"a$(s)b$s a$(s)c"   : mixed
+}
+
 : normalize
 :
 {
@@ -18,7 +29,7 @@ end
   $* <'print $normalize([dir_path] a/../b)'          >"b$s"      : dir-path
   $* <'print $normalize([dir_paths] a/../b a/../c/)' >"b$s c$s"  : dir-paths
   $* <'print $path.normalize(a/../b)'                >"b"        : untyped
-  $* <'print $path.normalize(a/../b/ a/../b)'        >"b$s b"    : mixed
+  $* <'print $path.normalize(a/../b/ a/../c)'        >"b$s c"    : mixed
 }
 
 : invalid-path
-- 
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