Add few filesystem function overloads for C-string paths

2 files changed, 21 insertions, 12 deletions

diff --git a/butl/filesystem b/butl/filesystem
index 41b9266..4b4af6a 100644
--- a/butl/filesystem
+++ b/butl/filesystem
@@ -36,13 +36,19 @@ namespace butl
   // this function resolves symlinks.
   //
   LIBBUTL_EXPORT bool
-  file_exists (const path&);
+  file_exists (const char*);
+
+  inline bool
+  file_exists (const path& p) {return file_exists (p.string ().c_str ());}
 
   // Return true if the path is to an existing directory. Note that
   // this function resolves symlinks.
   //
   LIBBUTL_EXPORT bool
-  dir_exists (const path&);
+  dir_exists (const char*);
+
+  inline bool
+  dir_exists (const path& p) {return dir_exists (p.string ().c_str ());}
 
   // Return true if the directory is empty. Note that the path must exist
   // and be a directory.
@@ -217,7 +223,10 @@ namespace butl
   // symlinks.
   //
   LIBBUTL_EXPORT timestamp
-  file_mtime (const path&);
+  file_mtime (const char*);
+
+  inline timestamp
+  file_mtime (const path& p) {return file_mtime (p.string ().c_str ());}
 
   // Path permissions.
   //
diff --git a/butl/filesystem.cxx b/butl/filesystem.cxx
index 9db8814..5584e00 100644
--- a/butl/filesystem.cxx
+++ b/butl/filesystem.cxx
@@ -35,14 +35,14 @@ using namespace std;
 namespace butl
 {
   bool
-  file_exists (const path& p)
+  file_exists (const char* p)
   {
 #ifndef _WIN32
     struct stat s;
-    if (stat (p.string ().c_str (), &s) != 0)
+    if (stat (p, &s) != 0)
 #else
     struct _stat s;
-    if (_stat (p.string ().c_str (), &s) != 0)
+    if (_stat (p, &s) != 0)
 #endif
     {
       if (errno == ENOENT || errno == ENOTDIR)
@@ -55,14 +55,14 @@ namespace butl
   }
 
   bool
-  dir_exists (const path& p)
+  dir_exists (const char* p)
   {
 #ifndef _WIN32
     struct stat s;
-    if (stat (p.string ().c_str (), &s) != 0)
+    if (stat (p, &s) != 0)
 #else
     struct _stat s;
-    if (_stat (p.string ().c_str (), &s) != 0)
+    if (_stat (p, &s) != 0)
 #endif
     {
       if (errno == ENOENT || errno == ENOTDIR)
@@ -294,14 +294,14 @@ namespace butl
   nsec (...) {return 0;}
 
   timestamp
-  file_mtime (const path& p)
+  file_mtime (const char* p)
   {
 #ifndef _WIN32
     struct stat s;
-    if (stat (p.string ().c_str (), &s) != 0)
+    if (stat (p, &s) != 0)
 #else
     struct _stat s;
-    if (_stat (p.string ().c_str (), &s) != 0)
+    if (_stat (p, &s) != 0)
 #endif
     {
       if (errno == ENOENT || errno == ENOTDIR)