LCOV - code coverage report
Current view: top level - src - icu_util.cc (source / functions) Hit Total Coverage
Test: app.info Lines: 25 30 83.3 %
Date: 2019-01-20 Functions: 3 3 100.0 %

          Line data    Source code
       1             : // Copyright 2013 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #include "src/icu_util.h"
       6             : 
       7             : #if defined(_WIN32)
       8             : #include <windows.h>
       9             : #endif
      10             : 
      11             : #if defined(V8_INTL_SUPPORT)
      12             : #include <stdio.h>
      13             : #include <stdlib.h>
      14             : 
      15             : #include "unicode/putil.h"
      16             : #include "unicode/udata.h"
      17             : 
      18             : #include "src/base/build_config.h"
      19             : #include "src/base/file-utils.h"
      20             : 
      21             : #define ICU_UTIL_DATA_FILE   0
      22             : #define ICU_UTIL_DATA_SHARED 1
      23             : #define ICU_UTIL_DATA_STATIC 2
      24             : 
      25             : #define ICU_UTIL_DATA_SYMBOL "icudt" U_ICU_VERSION_SHORT "_dat"
      26             : #define ICU_UTIL_DATA_SHARED_MODULE_NAME "icudt.dll"
      27             : #endif
      28             : 
      29             : namespace v8 {
      30             : 
      31             : namespace internal {
      32             : 
      33             : #if defined(V8_INTL_SUPPORT) && (ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_FILE)
      34             : namespace {
      35             : char* g_icu_data_ptr = nullptr;
      36             : 
      37       58263 : void free_icu_data_ptr() {
      38       58263 :   delete[] g_icu_data_ptr;
      39       58263 : }
      40             : 
      41             : }  // namespace
      42             : #endif
      43             : 
      44       58263 : bool InitializeICUDefaultLocation(const char* exec_path,
      45             :                                   const char* icu_data_file) {
      46             : #if !defined(V8_INTL_SUPPORT)
      47             :   return true;
      48             : #else
      49             : #if ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_FILE
      50       58263 :   if (icu_data_file) {
      51           0 :     return InitializeICU(icu_data_file);
      52             :   }
      53             :   char* icu_data_file_default;
      54             : #if defined(V8_TARGET_LITTLE_ENDIAN)
      55       58263 :   base::RelativePath(&icu_data_file_default, exec_path, "icudtl.dat");
      56             : #elif defined(V8_TARGET_BIG_ENDIAN)
      57             :   base::RelativePath(&icu_data_file_default, exec_path, "icudtb.dat");
      58             : #else
      59             : #error Unknown byte ordering
      60             : #endif
      61       58263 :   bool result = InitializeICU(icu_data_file_default);
      62       58263 :   free(icu_data_file_default);
      63       58263 :   return result;
      64             : #else
      65             :   return InitializeICU(nullptr);
      66             : #endif
      67             : #endif
      68             : }
      69             : 
      70       58263 : bool InitializeICU(const char* icu_data_file) {
      71             : #if !defined(V8_INTL_SUPPORT)
      72             :   return true;
      73             : #else
      74             : #if ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_SHARED
      75             :   // We expect to find the ICU data module alongside the current module.
      76             :   HMODULE module = LoadLibraryA(ICU_UTIL_DATA_SHARED_MODULE_NAME);
      77             :   if (!module) return false;
      78             : 
      79             :   FARPROC addr = GetProcAddress(module, ICU_UTIL_DATA_SYMBOL);
      80             :   if (!addr) return false;
      81             : 
      82             :   UErrorCode err = U_ZERO_ERROR;
      83             :   udata_setCommonData(reinterpret_cast<void*>(addr), &err);
      84             :   // Never try to load ICU data from files.
      85             :   udata_setFileAccess(UDATA_ONLY_PACKAGES, &err);
      86             :   return err == U_ZERO_ERROR;
      87             : #elif ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_STATIC
      88             :   // Mac/Linux bundle the ICU data in.
      89             :   return true;
      90             : #elif ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_FILE
      91       58263 :   if (!icu_data_file) return false;
      92             : 
      93       58263 :   if (g_icu_data_ptr) return true;
      94             : 
      95       58263 :   FILE* inf = fopen(icu_data_file, "rb");
      96       58263 :   if (!inf) return false;
      97             : 
      98       58263 :   fseek(inf, 0, SEEK_END);
      99       58263 :   size_t size = ftell(inf);
     100       58263 :   rewind(inf);
     101             : 
     102       58263 :   g_icu_data_ptr = new char[size];
     103       58263 :   if (fread(g_icu_data_ptr, 1, size, inf) != size) {
     104           0 :     delete[] g_icu_data_ptr;
     105           0 :     g_icu_data_ptr = nullptr;
     106           0 :     fclose(inf);
     107           0 :     return false;
     108             :   }
     109       58263 :   fclose(inf);
     110             : 
     111       58263 :   atexit(free_icu_data_ptr);
     112             : 
     113       58263 :   UErrorCode err = U_ZERO_ERROR;
     114       58263 :   udata_setCommonData(reinterpret_cast<void*>(g_icu_data_ptr), &err);
     115             :   // Never try to load ICU data from files.
     116       58263 :   udata_setFileAccess(UDATA_ONLY_PACKAGES, &err);
     117       58263 :   return err == U_ZERO_ERROR;
     118             : #endif
     119             : #endif
     120             : }
     121             : 
     122             : }  // namespace internal
     123             : }  // namespace v8

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