init: fix DumpState() logging

Fix two formatting issues in Action::DumpState(),

Old:
on ro.crypto.state=encrypted ro.crypto.type=file zygote-start
New:
on ro.crypto.state=encrypted && ro.crypto.type=file && zygote-start

Old:
on boot
  %sifup lo
  %shostname localhost
  %sdomainname localdomain
  %swrite /proc/sys/vm/overcommit_memory 1
New:
on boot
  ifup lo
  hostname localhost
  domainname localdomain
  write /proc/sys/vm/overcommit_memory 1

Also, now that we're importing many small rc files, it no longer makes
sense to call Parser::DumpState() after each import.  Therefore, move
the conditional to call Parser::DumpState() to after /init.rc and its
imports are parsed and after the late imports are parsed.

Test: Boot bullhead with DumpState() enabled and check the output
Change-Id: I0b81305b8938aa1a7133d7dd2055f34f47609cf9

init/action.cpp

@@ -246,20 +246,16 @@ bool Action::TriggersEqual(const Action& other) const {
 }
 
 std::string Action::BuildTriggersString() const {
-    std::string result;
+    std::vector<std::string> triggers;
 
     for (const auto& [trigger_name, trigger_value] : property_triggers_) {
-        result += trigger_name;
-        result += '=';
-        result += trigger_value;
-        result += ' ';
+        triggers.emplace_back(trigger_name + '=' + trigger_value);
     }
     if (!event_trigger_.empty()) {
-        result += event_trigger_;
-        result += ' ';
+        triggers.emplace_back(event_trigger_);
     }
-    result.pop_back();
-    return result;
+
+    return Join(triggers, " && ");
 }
 
 void Action::DumpState() const {
@@ -268,7 +264,7 @@ void Action::DumpState() const {
 
     for (const auto& c : commands_) {
         std::string cmd_str = c.BuildCommandString();
-        LOG(INFO) << "  %s" << cmd_str;
+        LOG(INFO) << "  " << cmd_str;
     }
 }
 

init/builtins.cpp

@@ -494,6 +494,10 @@ static void import_late(const std::vector<std::string>& args, size_t start_index
             parser.ParseConfig(args[i]);
         }
     }
+
+    // Turning this on and letting the INFO logging be discarded adds 0.2s to
+    // Nexus 9 boot time, so it's disabled by default.
+    if (false) parser.DumpState();
 }
 
 /* mount_fstab

init/init.cpp

@@ -1254,6 +1254,10 @@ int main(int argc, char** argv) {
         parser.set_is_odm_etc_init_loaded(true);
     }
 
+    // Turning this on and letting the INFO logging be discarded adds 0.2s to
+    // Nexus 9 boot time, so it's disabled by default.
+    if (false) parser.DumpState();
+
     ActionManager& am = ActionManager::GetInstance();
 
     am.QueueEventTrigger("early-init");

init/init_parser.cpp

@@ -106,10 +106,6 @@ bool Parser::ParseConfigFile(const std::string& path) {
         sp.second->EndFile(path);
     }
 
-    // Turning this on and letting the INFO logging be discarded adds 0.2s to
-    // Nexus 9 boot time, so it's disabled by default.
-    if (false) DumpState();
-
     LOG(VERBOSE) << "(Parsing " << path << " took " << t << ".)";
     return true;
 }