* nix-env: a tool to manage user environments.

* Replace all directory reading code by a generic readDirectory()
  function.

src/libstore/db.cc

@@ -166,7 +166,7 @@ void Database::open(const string & path)
         /* The following code provides automatic recovery of the
            database environment.  Recovery is necessary when a process
            dies while it has the database open.  To detect this,
-           processes atomically increment a counter when the open the
+           processes atomically increment a counter when they open the
            database, and decrement it when they close it.  If we see
            that counter is > 0 but no processes are accessing the
            database---determined by attempting to obtain a write lock
@@ -199,7 +199,7 @@ void Database::open(const string & path)
                other readers or writers. */
 
             int n = getAccessorCount(fdAccessors);
-                setAccessorCount(fdAccessors, 1);
+            setAccessorCount(fdAccessors, 1);
 
             if (n != 0) {
                 printMsg(lvlTalkative,

src/libstore/globals.cc

@@ -3,6 +3,7 @@
 string nixStore = "/UNINIT";
 string nixDataDir = "/UNINIT";
 string nixLogDir = "/UNINIT";
+string nixStateDir = "/UNINIT";
 string nixDBPath = "/UNINIT";
 
 bool keepFailed = false;

src/libstore/globals.hh

@@ -16,6 +16,9 @@ extern string nixDataDir; /* !!! fix */
 /* nixLogDir is the directory where we log various operations. */ 
 extern string nixLogDir;
 
+/* nixStateDir is the directory where state is stored. */
+extern string nixStateDir;
+
 /* nixDBPath is the path name of our Berkeley DB environment. */
 extern string nixDBPath;
 

src/libstore/references.cc

@@ -36,14 +36,10 @@ void checkPath(const string & path,
         throw SysError(format("getting attributes of path `%1%'") % path);
 
     if (S_ISDIR(st.st_mode)) {
-        AutoCloseDir dir = opendir(path.c_str());
-
-        struct dirent * dirent;
-        while (errno = 0, dirent = readdir(dir)) {
-            string name = dirent->d_name;
-            if (name == "." || name == "..") continue;
-            search(name, ids, seen);
-            checkPath(path + "/" + name, ids, seen);
+        Strings names = readDirectory(path);
+	for (Strings::iterator i = names.begin(); i != names.end(); i++) {
+            search(*i, ids, seen);
+            checkPath(path + "/" + *i, ids, seen);
         }
     }