commit 1c3a53f03ca3c2c647f83cd8b8ae7e18c5c7bc69
author Tom Cherry <tomcherry@google.com> Thu Jun 22 16:50:31 2017 -0700
committer Tom Cherry <tomcherry@google.com> Thu Jun 22 17:24:22 2017 -0700
tree 9fc09a4a34648a35479a68a717c18edb28e51e26
parent 07a57f0f283938c5e558d79c62d4c2d4c24d3d03

init: cleanup some string usage

1) property_set() takes const std::string& for both of its arguments,
   so stop using .c_str() with its parameters
2) Simplify a few places where StringPrintf() is used to concatenate strings
3) Use std::to_string() instead of StringPrintf() where it's better suited

Test: Boot bullhead
Test: init unit tests
Change-Id: I68ebda0e469f6230c8f9ad3c8d5f9444e0c4fdfd

init/init.cpp

diff --git a/init/init.cpp b/init/init.cpp
index 999fada..d6e9130 100644
--- a/init/init.cpp
+++ b/init/init.cpp
@@ -42,7 +42,6 @@
 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/properties.h>
-#include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include <android-base/unique_fd.h>
 #include <keyutils.h>
@@ -71,9 +70,10 @@
 #include "util.h"
 #include "watchdogd.h"
 
+using namespace std::string_literals;
+
 using android::base::boot_clock;
 using android::base::GetProperty;
-using android::base::StringPrintf;
 
 struct selabel_handle *sehandle;
 struct selabel_handle *sehandle_prop;
@@ -219,7 +219,7 @@
         panic();
     }
 
-    property_set("ro.boottime.init.cold_boot_wait", std::to_string(t.duration_ms()).c_str());
+    property_set("ro.boottime.init.cold_boot_wait", std::to_string(t.duration_ms()));
     return 0;
 }
 
@@ -449,14 +449,14 @@
 
     if (for_emulator) {
         // In the emulator, export any kernel option with the "ro.kernel." prefix.
-        property_set(StringPrintf("ro.kernel.%s", key.c_str()).c_str(), value.c_str());
+        property_set("ro.kernel." + key, value);
         return;
     }
 
     if (key == "qemu") {
         strlcpy(qemu, value.c_str(), sizeof(qemu));
     } else if (android::base::StartsWith(key, "androidboot.")) {
-        property_set(StringPrintf("ro.boot.%s", key.c_str() + 12).c_str(), value.c_str());
+        property_set("ro.boot." + key.substr(12), value);
     }
 }
 
@@ -487,7 +487,7 @@
     };
     for (size_t i = 0; i < arraysize(prop_map); i++) {
         std::string value = GetProperty(prop_map[i].src_prop, "");
-        property_set(prop_map[i].dst_prop, (!value.empty()) ? value.c_str() : prop_map[i].default_value);
+        property_set(prop_map[i].dst_prop, (!value.empty()) ? value : prop_map[i].default_value);
     }
 }
 
@@ -511,8 +511,7 @@
         android::base::ReadFileToString(file_name, &dt_file);
         std::replace(dt_file.begin(), dt_file.end(), ',', '.');
 
-        std::string property_name = StringPrintf("ro.boot.%s", dp->d_name);
-        property_set(property_name.c_str(), dt_file.c_str());
+        property_set("ro.boot."s + dp->d_name, dt_file);
     }
 }
 
@@ -1002,7 +1001,7 @@
 
         static constexpr uint32_t kNanosecondsPerMillisecond = 1e6;
         uint64_t start_ms = start_time.time_since_epoch().count() / kNanosecondsPerMillisecond;
-        setenv("INIT_STARTED_AT", StringPrintf("%" PRIu64, start_ms).c_str(), 1);
+        setenv("INIT_STARTED_AT", std::to_string(start_ms).c_str(), 1);
 
         char* path = argv[0];
         char* args[] = { path, nullptr };