Migrate from android::String isEmpty to empty

This empty method is different from the old one - it aligns with
std::string definition.

Bug: 295394788
Test: make checkbuild
Change-Id: Id74502de0e51182aa9629db8dc70739be4483d12

6 files changed, 14 insertions, 14 deletions

diff --git a/cmds/atrace/atrace.cpp b/cmds/atrace/atrace.cpp
index 81056262c3..ab7ef16d08 100644
--- a/cmds/atrace/atrace.cpp
+++ b/cmds/atrace/atrace.cpp
@@ -796,7 +796,7 @@ static bool setCategoriesEnableFromFile(const char* categories_file)
     bool ok = true;
     while (!tokenizer->isEol()) {
         String8 token = tokenizer->nextToken(" ");
-        if (token.isEmpty()) {
+        if (token.empty()) {
             tokenizer->skipDelimiters(" ");
             continue;
         }
diff --git a/libs/gui/tests/GLTest.cpp b/libs/gui/tests/GLTest.cpp
index 9024b70cd6..e5f4aaa999 100644
--- a/libs/gui/tests/GLTest.cpp
+++ b/libs/gui/tests/GLTest.cpp
@@ -191,24 +191,24 @@ EGLSurface GLTest::createWindowSurface(EGLDisplay display, EGLConfig config,
         msg += String8::format("r(%d isn't %d)", pixel[0], r);
     }
     if (g >= 0 && abs(g - int(pixel[1])) > tolerance) {
-        if (!msg.isEmpty()) {
+        if (!msg.empty()) {
             msg += " ";
         }
         msg += String8::format("g(%d isn't %d)", pixel[1], g);
     }
     if (b >= 0 && abs(b - int(pixel[2])) > tolerance) {
-        if (!msg.isEmpty()) {
+        if (!msg.empty()) {
             msg += " ";
         }
         msg += String8::format("b(%d isn't %d)", pixel[2], b);
     }
     if (a >= 0 && abs(a - int(pixel[3])) > tolerance) {
-        if (!msg.isEmpty()) {
+        if (!msg.empty()) {
             msg += " ";
         }
         msg += String8::format("a(%d isn't %d)", pixel[3], a);
     }
-    if (!msg.isEmpty()) {
+    if (!msg.empty()) {
         return ::testing::AssertionFailure(::testing::Message(msg.c_str()));
     } else {
         return ::testing::AssertionSuccess();
@@ -223,24 +223,24 @@ EGLSurface GLTest::createWindowSurface(EGLDisplay display, EGLConfig config,
         msg += String8::format("left(%d isn't %d)", r1.left, r2.left);
     }
     if (abs(r1.top - r2.top) > tolerance) {
-        if (!msg.isEmpty()) {
+        if (!msg.empty()) {
             msg += " ";
         }
         msg += String8::format("top(%d isn't %d)", r1.top, r2.top);
     }
     if (abs(r1.right - r2.right) > tolerance) {
-        if (!msg.isEmpty()) {
+        if (!msg.empty()) {
             msg += " ";
         }
         msg += String8::format("right(%d isn't %d)", r1.right, r2.right);
     }
     if (abs(r1.bottom - r2.bottom) > tolerance) {
-        if (!msg.isEmpty()) {
+        if (!msg.empty()) {
             msg += " ";
         }
         msg += String8::format("bottom(%d isn't %d)", r1.bottom, r2.bottom);
     }
-    if (!msg.isEmpty()) {
+    if (!msg.empty()) {
         msg += String8::format(" R1: [%d %d %d %d] R2: [%d %d %d %d]",
                                r1.left, r1.top, r1.right, r1.bottom,
                                r2.left, r2.top, r2.right, r2.bottom);
diff --git a/libs/input/KeyCharacterMap.cpp b/libs/input/KeyCharacterMap.cpp
index d571917ff9..a4cd239a92 100644
--- a/libs/input/KeyCharacterMap.cpp
+++ b/libs/input/KeyCharacterMap.cpp
@@ -1247,7 +1247,7 @@ status_t KeyCharacterMap::Parser::parseCharacterLiteral(char16_t* outCharacter)
     }
 
     // Ensure that we consumed the entire token.
-    if (mTokenizer->nextToken(WHITESPACE).isEmpty()) {
+    if (mTokenizer->nextToken(WHITESPACE).empty()) {
         return NO_ERROR;
     }
 
diff --git a/libs/input/PropertyMap.cpp b/libs/input/PropertyMap.cpp
index 315f5a6d4f..db0c98fc91 100644
--- a/libs/input/PropertyMap.cpp
+++ b/libs/input/PropertyMap.cpp
@@ -171,7 +171,7 @@ status_t PropertyMap::Parser::parse() {
 
         if (!mTokenizer->isEol() && mTokenizer->peekChar() != '#') {
             String8 keyToken = mTokenizer->nextToken(WHITESPACE_OR_PROPERTY_DELIMITER);
-            if (keyToken.isEmpty()) {
+            if (keyToken.empty()) {
                 ALOGE("%s: Expected non-empty property key.", mTokenizer->getLocation().c_str());
                 return BAD_VALUE;
             }
diff --git a/libs/input/VirtualKeyMap.cpp b/libs/input/VirtualKeyMap.cpp
index de62c870ff..8b8af4290f 100644
--- a/libs/input/VirtualKeyMap.cpp
+++ b/libs/input/VirtualKeyMap.cpp
@@ -146,7 +146,7 @@ bool VirtualKeyMap::Parser::parseNextIntField(int32_t* outValue) {
     String8 token = mTokenizer->nextToken(WHITESPACE_OR_FIELD_DELIMITER);
     char* end;
     *outValue = strtol(token.c_str(), &end, 0);
-    if (token.isEmpty() || *end != '\0') {
+    if (token.empty() || *end != '\0') {
         ALOGE("Expected an integer, got '%s'.", token.c_str());
         return false;
     }
diff --git a/services/sensorservice/SensorService.cpp b/services/sensorservice/SensorService.cpp
index 1030cee588..c69b072525 100644
--- a/services/sensorservice/SensorService.cpp
+++ b/services/sensorservice/SensorService.cpp
@@ -609,7 +609,7 @@ status_t SensorService::dump(int fd, const Vector<String16>& args) {
             for (auto&& i : mRecentEvent) {
                 std::shared_ptr<SensorInterface> s = getSensorInterfaceFromHandle(i.first);
                 if (!i.second->isEmpty() && s != nullptr) {
-                    if (privileged || s->getSensor().getRequiredPermission().isEmpty()) {
+                    if (privileged || s->getSensor().getRequiredPermission().empty()) {
                         i.second->setFormat("normal");
                     } else {
                         i.second->setFormat("mask_data");
@@ -735,7 +735,7 @@ status_t SensorService::dumpProtoLocked(int fd, ConnectionSafeAutolock* connLock
     for (auto&& i : mRecentEvent) {
         std::shared_ptr<SensorInterface> s = getSensorInterfaceFromHandle(i.first);
         if (!i.second->isEmpty() && s != nullptr) {
-            i.second->setFormat(privileged || s->getSensor().getRequiredPermission().isEmpty() ?
+            i.second->setFormat(privileged || s->getSensor().getRequiredPermission().empty() ?
                     "normal" : "mask_data");
             const uint64_t mToken = proto.start(service::SensorEventsProto::RECENT_EVENTS_LOGS);
             proto.write(service::SensorEventsProto::RecentEventsLog::NAME,