Merge "Fix script-related parts of locale resource matching" into nyc-dev
diff --git a/include/androidfw/ResourceTypes.h b/include/androidfw/ResourceTypes.h
index 16bea79..f23fceb 100644
--- a/include/androidfw/ResourceTypes.h
+++ b/include/androidfw/ResourceTypes.h
@@ -1151,9 +1151,13 @@
         uint32_t screenConfig2;
     };
 
-    // If true, it means that the script of the locale was explicitly provided.
-    // If false, it means that the script was automatically computed.
-    bool localeScriptWasProvided;
+    // If false and localeScript is set, it means that the script of the locale
+    // was explicitly provided.
+    //
+    // If true, it means that localeScript was automatically computed.
+    // localeScript may still not be set in this case, which means that we
+    // tried but could not compute a script.
+    bool localeScriptWasComputed;
 
     void copyFromDeviceNoSwap(const ResTable_config& o);
     
@@ -1233,7 +1237,7 @@
 
     inline void clearLocale() {
         locale = 0;
-        localeScriptWasProvided = false;
+        localeScriptWasComputed = false;
         memset(localeScript, 0, sizeof(localeScript));
         memset(localeVariant, 0, sizeof(localeVariant));
     }
diff --git a/libs/androidfw/ResourceTypes.cpp b/libs/androidfw/ResourceTypes.cpp
index c73bb584..49b3a51 100644
--- a/libs/androidfw/ResourceTypes.cpp
+++ b/libs/androidfw/ResourceTypes.cpp
@@ -1870,8 +1870,8 @@
 
     // The language & region are equal, so compare the scripts and variants.
     const char emptyScript[sizeof(l.localeScript)] = {'\0', '\0', '\0', '\0'};
-    const char *lScript = l.localeScriptWasProvided ? l.localeScript : emptyScript;
-    const char *rScript = r.localeScriptWasProvided ? r.localeScript : emptyScript;
+    const char *lScript = l.localeScriptWasComputed ? emptyScript : l.localeScript;
+    const char *rScript = r.localeScriptWasComputed ? emptyScript : r.localeScript;
     int script = memcmp(lScript, rScript, sizeof(l.localeScript));
     if (script) {
         return script;
@@ -2016,11 +2016,11 @@
     // scripts since it seems more useful to do so. We will consider
     // "en-US-POSIX" to be more specific than "en-Latn-US".
 
-    const int score = (localeScriptWasProvided ? 1 : 0) +
-        ((localeVariant[0] != 0) ? 2 : 0);
+    const int score = ((localeScript[0] != '\0' && !localeScriptWasComputed) ? 1 : 0) +
+        ((localeVariant[0] != '\0') ? 2 : 0);
 
-    const int oScore = (o.localeScriptWasProvided ? 1 : 0) +
-        ((o.localeVariant[0] != 0) ? 2 : 0);
+    const int oScore = (o.localeScript[0] != '\0' && !o.localeScriptWasComputed ? 1 : 0) +
+        ((o.localeVariant[0] != '\0') ? 2 : 0);
 
     return score - oScore;
 
@@ -2535,7 +2535,8 @@
         if (settings.localeScript[0] == '\0') { // could not determine the request's script
             countriesMustMatch = true;
         } else {
-            if (localeScript[0] == '\0') { // script was not provided, so we try to compute it
+            if (localeScript[0] == '\0' && !localeScriptWasComputed) {
+                // script was not provided or computed, so we try to compute it
                 localeDataComputeScript(computed_script, language, country);
                 if (computed_script[0] == '\0') { // we could not compute the script
                     countriesMustMatch = true;
@@ -2684,8 +2685,8 @@
     if (!language[0]) {
         return;
     }
-
-    if (!localeScriptWasProvided && !localeVariant[0]) {
+    const bool scriptWasProvided = localeScript[0] != '\0' && !localeScriptWasComputed;
+    if (!scriptWasProvided && !localeVariant[0]) {
         // Legacy format.
         if (out.size() > 0) {
             out.append("-");
@@ -2715,7 +2716,7 @@
     size_t len = unpackLanguage(buf);
     out.append(buf, len);
 
-    if (localeScriptWasProvided) {
+    if (scriptWasProvided) {
         out.append("+");
         out.append(localeScript, sizeof(localeScript));
     }
@@ -2746,7 +2747,7 @@
         charsWritten += unpackLanguage(str);
     }
 
-    if (localeScriptWasProvided) {
+    if (localeScript[0] && !localeScriptWasComputed) {
         if (charsWritten) {
             str[charsWritten++] = '-';
         }
@@ -2787,7 +2788,6 @@
                for (size_t i = 1; i < 4; ++i) {
                    config->localeScript[i] = tolower(start[i]);
                }
-               config->localeScriptWasProvided = true;
                break;
            }
        case 5:
@@ -2807,7 +2807,6 @@
 
 void ResTable_config::setBcp47Locale(const char* in) {
     locale = 0;
-    localeScriptWasProvided = false;
     memset(localeScript, 0, sizeof(localeScript));
     memset(localeVariant, 0, sizeof(localeVariant));
 
@@ -2824,9 +2823,10 @@
 
     const size_t size = in + strlen(in) - start;
     assignLocaleComponent(this, start, size);
-    if (localeScript[0] == '\0') {
+    localeScriptWasComputed = (localeScript[0] == '\0');
+    if (localeScriptWasComputed) {
         computeScript();
-    };
+    }
 }
 
 String8 ResTable_config::toString() const {
diff --git a/libs/androidfw/tests/ConfigLocale_test.cpp b/libs/androidfw/tests/ConfigLocale_test.cpp
index 4b8d65c..2bf9b12 100644
--- a/libs/androidfw/tests/ConfigLocale_test.cpp
+++ b/libs/androidfw/tests/ConfigLocale_test.cpp
@@ -125,10 +125,10 @@
 
      if (script != NULL) {
          memcpy(out->localeScript, script, 4);
-         out->localeScriptWasProvided = true;
+         out->localeScriptWasComputed = false;
      } else {
          out->computeScript();
-         out->localeScriptWasProvided = false;
+         out->localeScriptWasComputed = true;
      }
 
      if (variant != NULL) {
@@ -182,7 +182,7 @@
     EXPECT_EQ('n', test.language[1]);
     EXPECT_EQ('U', test.country[0]);
     EXPECT_EQ('S', test.country[1]);
-    EXPECT_FALSE(test.localeScriptWasProvided);
+    EXPECT_TRUE(test.localeScriptWasComputed);
     EXPECT_EQ(0, memcmp("Latn", test.localeScript, 4));
     EXPECT_EQ(0, test.localeVariant[0]);
 
@@ -203,7 +203,7 @@
     EXPECT_EQ('e', test.language[0]);
     EXPECT_EQ('n', test.language[1]);
     EXPECT_EQ(0, memcmp("Latn", test.localeScript, 4));
-    EXPECT_TRUE(test.localeScriptWasProvided);
+    EXPECT_FALSE(test.localeScriptWasComputed);
     memset(out, 1, 4);
     test.unpackRegion(out);
     EXPECT_EQ('4', out[0]);
@@ -216,7 +216,7 @@
     EXPECT_EQ('d', out[0]);
     EXPECT_EQ('e', out[1]);
     EXPECT_EQ('\0', out[2]);
-    EXPECT_FALSE(test.localeScriptWasProvided);
+    EXPECT_TRUE(test.localeScriptWasComputed);
     EXPECT_EQ(0, memcmp("Latn", test.localeScript, 4));
     memset(out, 1, 4);
     test.unpackRegion(out);
@@ -229,7 +229,7 @@
     EXPECT_EQ('d', out[0]);
     EXPECT_EQ('e', out[1]);
     EXPECT_EQ('\0', out[2]);
-    EXPECT_TRUE(test.localeScriptWasProvided);
+    EXPECT_FALSE(test.localeScriptWasComputed);
     EXPECT_EQ(0, memcmp("Latn", test.localeScript, 4));
     memset(out, 1, 4);
     test.unpackRegion(out);
@@ -270,11 +270,11 @@
     fillIn("en", NULL, "Latn", NULL, &config);
 
     char out[RESTABLE_MAX_LOCALE_LEN];
-    config.localeScriptWasProvided = true;
+    config.localeScriptWasComputed = false;
     config.getBcp47Locale(out);
     EXPECT_EQ(0, strcmp("en-Latn", out));
 
-    config.localeScriptWasProvided = false;
+    config.localeScriptWasComputed = true;
     config.getBcp47Locale(out);
     EXPECT_EQ(0, strcmp("en", out));
 }
@@ -379,7 +379,7 @@
 
     // emulate packages built with older AAPT
     memset(supported.localeScript, '\0', 4);
-    supported.localeScriptWasProvided = false;
+    supported.localeScriptWasComputed = false;
 
     EXPECT_TRUE(supported.match(requested));
 }
diff --git a/tools/aapt/AaptAssets.cpp b/tools/aapt/AaptAssets.cpp
index 3b01827..cbd8480 100644
--- a/tools/aapt/AaptAssets.cpp
+++ b/tools/aapt/AaptAssets.cpp
@@ -373,7 +373,7 @@
 void AaptLocaleValue::initFromResTable(const ResTable_config& config) {
     config.unpackLanguage(language);
     config.unpackRegion(region);
-    if (config.localeScriptWasProvided) {
+    if (config.localeScript[0] && !config.localeScriptWasComputed) {
         memcpy(script, config.localeScript, sizeof(config.localeScript));
     }
 
@@ -388,10 +388,10 @@
 
     if (script[0]) {
         memcpy(out->localeScript, script, sizeof(out->localeScript));
-        out->localeScriptWasProvided = true;
+        out->localeScriptWasComputed = false;
     } else {
         out->computeScript();
-        out->localeScriptWasProvided = false;
+        out->localeScriptWasComputed = true;
     }
 
     if (variant[0]) {
diff --git a/tools/aapt2/Locale.cpp b/tools/aapt2/Locale.cpp
index 6acf3b0..12f56fc 100644
--- a/tools/aapt2/Locale.cpp
+++ b/tools/aapt2/Locale.cpp
@@ -253,7 +253,7 @@
 void LocaleValue::initFromResTable(const ResTable_config& config) {
     config.unpackLanguage(language);
     config.unpackRegion(region);
-    if (config.localeScriptWasProvided) {
+    if (config.localeScript[0] && !config.localeScriptWasComputed) {
         memcpy(script, config.localeScript, sizeof(config.localeScript));
     }
 
@@ -268,10 +268,10 @@
 
     if (script[0]) {
         memcpy(out->localeScript, script, sizeof(out->localeScript));
-        out->localeScriptWasProvided = true;
+        out->localeScriptWasComputed = false;
     } else {
         out->computeScript();
-        out->localeScriptWasProvided = false;
+        out->localeScriptWasComputed = true;
     }
 
     if (variant[0]) {