Templatise tokenizeString()

src/libstore/build.cc

@@ -1435,7 +1435,7 @@ HookReply DerivationGoal::tryBuildHook()
     /* Tell the hook about system features (beyond the system type)
        required from the build machine.  (The hook could parse the
        drv file itself, but this is easier.) */
-    Strings features = tokenizeString(drv.env["requiredSystemFeatures"]);
+    Strings features = tokenizeString<Strings>(drv.env["requiredSystemFeatures"]);
     foreach (Strings::iterator, i, features) checkStoreName(*i); /* !!! abuse */
 
     /* Send the request to the hook. */
@@ -1594,7 +1594,7 @@ void DerivationGoal::startBuilder()
        fixed-output derivations is by definition pure (since we
        already know the cryptographic hash of the output). */
     if (fixedOutput) {
-        Strings varNames = tokenizeString(drv.env["impureEnvVars"]);
+        Strings varNames = tokenizeString<Strings>(drv.env["impureEnvVars"]);
         foreach (Strings::iterator, i, varNames) env[*i] = getEnv(*i);
     }
 
@@ -1606,7 +1606,7 @@ void DerivationGoal::startBuilder()
        by `nix-store --register-validity'.  However, the deriver
        fields are left empty. */
     string s = drv.env["exportReferencesGraph"];
-    Strings ss = tokenizeString(s);
+    Strings ss = tokenizeString<Strings>(s);
     if (ss.size() % 2 != 0)
         throw BuildError(format("odd number of tokens in `exportReferencesGraph': `%1%'") % s);
     for (Strings::iterator i = ss.begin(); i != ss.end(); ) {
@@ -1911,14 +1911,11 @@ void DerivationGoal::initChild()
                outside of the namespace.  Making a subtree private is
                local to the namespace, though, so setting MS_PRIVATE
                does not affect the outside world. */
-            Strings mounts = tokenizeString(readFile("/proc/self/mountinfo", true), "\n");
+            Strings mounts = tokenizeString<Strings>(readFile("/proc/self/mountinfo", true), "\n");
             foreach (Strings::iterator, i, mounts) {
-                Strings fields = tokenizeString(*i, " ");
-                assert(fields.size() >= 5);
-                Strings::iterator j = fields.begin();
-                std::advance(j, 4);
-                if (mount(0, j->c_str(), 0, MS_PRIVATE, 0) == -1)
-                    throw SysError(format("unable to make filesystem `%1%' private") % *j);
+                vector<string> fields = tokenizeString<vector<string> >(*i, " ");
+                if (mount(0, fields.at(4).c_str(), 0, MS_PRIVATE, 0) == -1)
+                    throw SysError(format("unable to make filesystem `%1%' private") % fields.at(4));
             }
 
             /* Bind-mount all the directories from the "host"
@@ -2053,7 +2050,7 @@ void DerivationGoal::initChild()
 PathSet parseReferenceSpecifiers(const Derivation & drv, string attr)
 {
     PathSet result;
-    Paths paths = tokenizeString(attr);
+    Paths paths = tokenizeString<Paths>(attr);
     foreach (Strings::iterator, i, paths) {
         if (isStorePath(*i))
             result.insert(*i);

src/libstore/gc.cc

@@ -373,7 +373,7 @@ static void addAdditionalRoots(StoreAPI & store, PathSet & roots)
 
     string result = runProgram(rootFinder);
 
-    Strings paths = tokenizeString(result, "\n");
+    Strings paths = tokenizeString<Strings>(result, "\n");
 
     foreach (Strings::iterator, i, paths) {
         if (isInStore(*i)) {

src/libstore/globals.cc

@@ -65,15 +65,7 @@ void Settings::processEnvironment()
         substituters.push_back(nixLibexecDir + "/nix/substituters/download-using-manifests.pl");
         substituters.push_back(nixLibexecDir + "/nix/substituters/download-from-binary-cache.pl");
     } else
-        substituters = tokenizeString(subs, ":");
-}
-
-
-string & at(Strings & ss, unsigned int n)
-{
-    Strings::iterator i = ss.begin();
-    advance(i, n);
-    return *i;
+        substituters = tokenizeString<Strings>(subs, ":");
 }
 
 
@@ -95,15 +87,15 @@ void Settings::loadConfFile()
         if (hash != string::npos)
             line = string(line, 0, hash);
 
-        Strings tokens = tokenizeString(line);
+        vector<string> tokens = tokenizeString<vector<string> >(line);
         if (tokens.empty()) continue;
 
-        if (tokens.size() < 2 || at(tokens, 1) != "=")
+        if (tokens.size() < 2 || tokens[1] != "=")
             throw Error(format("illegal configuration line `%1%' in `%2%'") % line % settingsFile);
 
-        string name = at(tokens, 0);
+        string name = tokens[0];
 
-        Strings::iterator i = tokens.begin();
+        vector<string>::iterator i = tokens.begin();
         advance(i, 2);
         settings[name] = concatStringsSep(" ", Strings(i, tokens.end())); // FIXME: slow
     };
@@ -170,7 +162,7 @@ void Settings::get(PathSet & res, const string & name)
     SettingsMap::iterator i = settings.find(name);
     if (i == settings.end()) return;
     res.clear();
-    Strings ss = tokenizeString(i->second);
+    Strings ss = tokenizeString<Strings>(i->second);
     res.insert(ss.begin(), ss.end());
 }
 

src/libstore/local-store.cc

@@ -1435,7 +1435,7 @@ Path LocalStore::importPath(bool requireSignature, Source & source)
         /* Lock the output path.  But don't lock if we're being called
            from a build hook (whose parent process already acquired a
            lock on this path). */
-        Strings locksHeld = tokenizeString(getEnv("NIX_HELD_LOCKS"));
+        Strings locksHeld = tokenizeString<Strings>(getEnv("NIX_HELD_LOCKS"));
         if (find(locksHeld.begin(), locksHeld.end(), dstPath) == locksHeld.end())
             outputLock.lockPaths(singleton<PathSet, Path>(dstPath));
 
@@ -1645,7 +1645,7 @@ ValidPathInfo LocalStore::queryPathInfoOld(const Path & path)
     string info = readFile(infoFile);
 
     /* Parse it. */
-    Strings lines = tokenizeString(info, "\n");
+    Strings lines = tokenizeString<Strings>(info, "\n");
 
     foreach (Strings::iterator, i, lines) {
         string::size_type p = i->find(':');
@@ -1654,7 +1654,7 @@ ValidPathInfo LocalStore::queryPathInfoOld(const Path & path)
         string name(*i, 0, p);
         string value(*i, p + 2);
         if (name == "References") {
-            Strings refs = tokenizeString(value, " ");
+            Strings refs = tokenizeString<Strings>(value, " ");
             res.references = PathSet(refs.begin(), refs.end());
         } else if (name == "Deriver") {
             res.deriver = value;