tools/stat: break main into functions

cruft/util

@@ -1 +1 @@
-Subproject commit 174bd62a293d3e15dc4fdc3112dea21443fc1d90
+Subproject commit 1ca47626aa5c033d9a40d7040657ba4ecc045155

tools/stat.cpp

@@ -12,12 +12,7 @@
 #include <cstdlib>
 
 
-constexpr unsigned type_index (mode_t val)
+///////////////////////////////////////////////////////////////////////////////
-{
-    return (val & S_IFMT) >> cruft::ctz (unsigned {S_IFMT});
-}
-
-
 struct type_printer {
     type_printer (struct stat const &_data)
         : data (_data)
@@ -26,6 +21,8 @@ struct type_printer {
     struct stat const &data;
 };
 
+
+//-----------------------------------------------------------------------------
 std::ostream& operator<< (std::ostream &os, type_printer const &val)
 {
     os << "[ ";
@@ -50,6 +47,7 @@ std::ostream& operator<< (std::ostream &os, type_printer const &val)
 }
 
 
+///////////////////////////////////////////////////////////////////////////////
 struct mode_printer {
     mode_printer (struct stat const &_data)
         : data (_data)
@@ -59,6 +57,7 @@ struct mode_printer {
 };
 
 
+//-----------------------------------------------------------------------------
 std::ostream& operator<< (std::ostream &os, mode_printer const &val)
 {
     return S_ISREG  (val.data.st_mode) ? os << "REGULAR"
@@ -72,6 +71,7 @@ std::ostream& operator<< (std::ostream &os, mode_printer const &val)
 }
 
 
+//-----------------------------------------------------------------------------
 std::ostream& operator<< (std::ostream &os, struct stat const &val)
 {
     return os << "{ dev: "  << val.st_dev
@@ -86,6 +86,61 @@ std::ostream& operator<< (std::ostream &os, struct stat const &val)
 }
 
 
+///////////////////////////////////////////////////////////////////////////////
+static void do_stat (char const *path)
+{
+    struct stat buffer;
+    cruft::posix::error::try_call (stat, path, &buffer);
+    std::cout << buffer;
+}
+
+
+//-----------------------------------------------------------------------------
+void do_xattr (char const *path)
+{
+    std::cout << ", xattr: ";
+
+    {
+        std::cout << "{ ";
+
+        std::string attr_list (1024, '\0');
+        {
+            auto res = listxattr (path, attr_list.data (), attr_list.size ());
+            if (res < 0)
+                cruft::posix::error::throw_code ();
+            attr_list.resize (res);
+        }
+
+        std::string keybuffer (64, '\0');
+        std::string val (128, '\0');
+        cruft::view<char const*> attr_view { attr_list.data (), attr_list.size () };
+        for (auto const &key: cruft::tokeniser (attr_view, '\0')) {
+            keybuffer.resize (0);
+            std::copy (std::begin (key), std::end (key), std::back_inserter (keybuffer));
+
+            while (true) {
+                auto const res = getxattr (path, keybuffer.c_str (), val.data (), val.size ());
+                if (res == E2BIG) {
+                    val.resize (val.size () * 2);
+                    continue;
+                }
+
+                if (res < 0)
+                    cruft::posix::error::throw_code ();
+
+                val.resize (res);
+                break;
+            }
+
+            std::cout << keybuffer << ": " << val << ", ";
+        }
+
+        std::cout << "}";
+    }
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
 int main (int argc, char **argv)
 {
     if (argc < 2) {
@@ -97,52 +152,8 @@ int main (int argc, char **argv)
         std::cout << "{ stat: ";
 
         char const *path = argv[i];
-
+        do_stat (path);
-        {
+        do_xattr (path);
-            struct stat buffer;
-            cruft::posix::error::try_call (stat, path, &buffer);
-            std::cout << buffer;
-        }
-
-        std::cout << ", xattr: ";
-
-        {
-            std::cout << "{ ";
-
-            std::string attr_list (1024, '\0');
-            {
-                auto res = listxattr (path, attr_list.data (), attr_list.size ());
-                if (res < 0)
-                    cruft::posix::error::throw_code ();
-                attr_list.resize (res);
-            }
-
-            std::string keybuffer (64, '\0');
-            std::string val (128, '\0');
-            cruft::view<char const*> attr_view { attr_list.data (), attr_list.size () };
-            for (auto const &key: cruft::tokeniser (attr_view, '\0')) {
-                keybuffer.resize (0);
-                std::copy (std::begin (key), std::end (key), std::back_inserter (keybuffer));
-
-                while (true) {
-                    auto const res = getxattr (path, keybuffer.c_str (), val.data (), val.size ());
-                    if (res == E2BIG) {
-                        val.resize (val.size () * 2);
-                        continue;
-                    }
-
-                    if (res < 0)
-                        cruft::posix::error::throw_code ();
-
-                    val.resize (res);
-                    break;
-                }
-
-                std::cout << keybuffer << ": " << val << ", ";
-            }
-
-            std::cout << "}";
-        }
 
         std::cout << '\n';
     }