[core][android] Remove unaccent from platform interfaces

The unaccent is used only within collator, thus, there is no
need to have separate platform interface for it.

6 files changed, 45 insertions, 77 deletions

diff --git a/platform/android/core-files.json b/platform/android/core-files.json
index 362098dd9b..9d502bf33e 100644
--- a/platform/android/core-files.json
+++ b/platform/android/core-files.json
@@ -86,7 +86,6 @@
         "platform/android/src/gl_functions.cpp",
         "platform/android/src/thread.cpp",
         "platform/android/src/timer.cpp",
-        "platform/android/src/unaccent.cpp",
         "platform/default/src/mbgl/gfx/headless_backend.cpp",
         "platform/default/src/mbgl/gfx/headless_frontend.cpp",
         "platform/default/src/mbgl/gl/headless_backend.cpp",
@@ -103,8 +102,7 @@
         "mbgl/gfx/headless_backend.hpp": "platform/default/include/mbgl/gfx/headless_backend.hpp",
         "mbgl/gfx/headless_frontend.hpp": "platform/default/include/mbgl/gfx/headless_frontend.hpp",
         "mbgl/gl/headless_backend.hpp": "platform/default/include/mbgl/gl/headless_backend.hpp",
-        "mbgl/map/map_snapshotter.hpp": "platform/default/include/mbgl/map/map_snapshotter.hpp",
-        "mbgl/text/unaccent.hpp": "platform/default/include/mbgl/text/unaccent.hpp"
+        "mbgl/map/map_snapshotter.hpp": "platform/default/include/mbgl/map/map_snapshotter.hpp"
     },
     "private_headers": {
         "android_renderer_backend.hpp": "platform/android/src/android_renderer_backend.hpp",
diff --git a/platform/android/src/text/collator.cpp b/platform/android/src/text/collator.cpp
index acb4f36ee1..1cd6f3cab0 100644
--- a/platform/android/src/text/collator.cpp
+++ b/platform/android/src/text/collator.cpp
@@ -2,8 +2,6 @@
 #include <mbgl/text/language_tag.hpp>
 #include <mbgl/util/platform.hpp>
 
-#include <mbgl/text/unaccent.hpp>
-
 #include <jni/jni.hpp>
 
 #include "../attach_env.hpp"
@@ -144,12 +142,10 @@ public:
         // Because of the difference in locale-awareness, this means turning on case-sensitivity
         // can _potentially_ change compare results for strings that don't actually have any case
         // differences.
-        jni::Local<jni::String> jlhs = jni::Make<jni::String>(*env, useUnaccent ?
-                                                        platform::unaccent(lhs) :
-                                                        lhs);
-        jni::Local<jni::String> jrhs = jni::Make<jni::String>(*env, useUnaccent ?
-                                                        platform::unaccent(rhs) :
-                                                        rhs);
+        jni::Local<jni::String> jlhs = useUnaccent ? android::StringUtils::unaccent(*env, jni::Make<jni::String>(*env, lhs))
+                                                     : jni::Make<jni::String>(*env, lhs);
+        jni::Local<jni::String> jrhs = useUnaccent ? android::StringUtils::unaccent(*env, jni::Make<jni::String>(*env, rhs))
+                                                     : jni::Make<jni::String>(*env, rhs);
 
         jni::jint result = android::Collator::compare(*env, collator, jlhs, jrhs);
 
diff --git a/platform/android/src/unaccent.cpp b/platform/android/src/unaccent.cpp
deleted file mode 100644
index 8da0ce4931..0000000000
--- a/platform/android/src/unaccent.cpp
+++ /dev/null
@@ -1,18 +0,0 @@
-#include <mbgl/text/unaccent.hpp>
-#include <string>
-#include "attach_env.hpp"
-#include "text/collator_jni.hpp"
-#include <jni/jni.hpp>
-
-namespace mbgl {
-namespace platform {
-
-std::string unaccent(const std::string& str) {
-    android::UniqueEnv env = android::AttachEnv();
-    jni::Local<jni::String> input = jni::Make<jni::String>(*env, str);
-    jni::Local<jni::String> unaccented = android::StringUtils::unaccent(*env, input);
-    return jni::Make<std::string>(*env, unaccented);
-}
-
-} // namespace platform
-} // namespace mbgl
diff --git a/platform/default/src/mbgl/text/collator.cpp b/platform/default/src/mbgl/text/collator.cpp
index 400fa4d94d..2d85b2d466 100644
--- a/platform/default/src/mbgl/text/collator.cpp
+++ b/platform/default/src/mbgl/text/collator.cpp
@@ -1,7 +1,10 @@
 #include <mbgl/style/expression/collator.hpp>
 #include <mbgl/util/platform.hpp>
 #include <libnu/strcoll.h>
-#include <mbgl/text/unaccent.hpp>
+#include <libnu/unaccent.h>
+
+#include <cstring>
+#include <sstream>
 
 /*
     The default implementation of Collator ignores locale.
@@ -16,6 +19,40 @@
     but would require bundling locale data.
 */
 
+namespace {
+std::string unaccent(const std::string& str)
+{
+    std::stringstream output;
+    char const *itr = str.c_str(), *nitr;
+    char const *end = itr + str.length();
+    char lo[5] = { 0 };
+
+    for (; itr < end; itr = nitr)
+    {
+        uint32_t code_point = 0;
+        char const* buf = nullptr;
+
+        nitr = _nu_tounaccent(itr, end, nu_utf8_read, &code_point, &buf, nullptr);
+        if (buf != nullptr)
+        {
+            do
+            {
+                buf = NU_CASEMAP_DECODING_FUNCTION(buf, &code_point);
+                if (code_point == 0) break;
+                output.write(lo, nu_utf8_write(code_point, lo) - lo);
+            }
+            while (code_point != 0);
+        }
+        else
+        {
+            output.write(itr, nitr - itr);
+        }
+    }
+
+    return output.str();
+}
+} // namespace
+
 namespace mbgl {
 namespace style {
 namespace expression {
@@ -40,10 +77,10 @@ public:
             return nu_strcasecoll(lhs.c_str(), rhs.c_str(),
                                   nu_utf8_read, nu_utf8_read);
         } else if (caseSensitive && !diacriticSensitive) {
-            return nu_strcoll(platform::unaccent(lhs).c_str(), platform::unaccent(rhs).c_str(),
+            return nu_strcoll(unaccent(lhs).c_str(), unaccent(rhs).c_str(),
                               nu_utf8_read, nu_utf8_read);
         } else {
-            return nu_strcasecoll(platform::unaccent(lhs).c_str(), platform::unaccent(rhs).c_str(),
+            return nu_strcasecoll(unaccent(lhs).c_str(), unaccent(rhs).c_str(),
                                   nu_utf8_read, nu_utf8_read);
         }
     }
diff --git a/platform/default/src/mbgl/text/unaccent.cpp b/platform/default/src/mbgl/text/unaccent.cpp
deleted file mode 100644
index 37b9a0d9ca..0000000000
--- a/platform/default/src/mbgl/text/unaccent.cpp
+++ /dev/null
@@ -1,43 +0,0 @@
-#include <mbgl/util/platform.hpp>
-#include <libnu/unaccent.h>
-#include <mbgl/text/unaccent.hpp>
-
-#include <cstring>
-#include <sstream>
-
-namespace mbgl { namespace platform {
-
-std::string unaccent(const std::string& str)
-{
-    std::stringstream output;
-    char const *itr = str.c_str(), *nitr;
-    char const *end = itr + str.length();
-    char lo[5] = { 0 };
-
-    for (; itr < end; itr = nitr)
-    {
-        uint32_t code_point = 0;
-        char const* buf = nullptr;
-
-        nitr = _nu_tounaccent(itr, end, nu_utf8_read, &code_point, &buf, nullptr);
-        if (buf != nullptr)
-        {
-            do
-            {
-                buf = NU_CASEMAP_DECODING_FUNCTION(buf, &code_point);
-                if (code_point == 0) break;
-                output.write(lo, nu_utf8_write(code_point, lo) - lo);
-            }
-            while (code_point != 0);
-        }
-        else
-        {
-            output.write(itr, nitr - itr);
-        }
-    }
-
-    return output.str();
-}
-
-} // namespace platform
-} // namespace mbgl
diff --git a/platform/linux/config.cmake b/platform/linux/config.cmake
index 55e6e3c192..3a0fd91d36 100644
--- a/platform/linux/config.cmake
+++ b/platform/linux/config.cmake
@@ -54,8 +54,6 @@ macro(mbgl_platform_core)
         PRIVATE platform/default/src/mbgl/layermanager/layer_manager.cpp
         PRIVATE platform/default/src/mbgl/text/local_glyph_rasterizer.cpp
         PRIVATE platform/default/src/mbgl/util/thread_local.cpp
-        PRIVATE platform/default/src/mbgl/text/unaccent.cpp
-        PRIVATE platform/default/include/mbgl/text/unaccent.hpp
         PRIVATE platform/default/src/mbgl/util/utf.cpp
         PRIVATE platform/default/src/mbgl/util/format_number.cpp