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/init/icu_util.h"
6
7 #if defined(_WIN32)
8 #include "src/base/win32-headers.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_STATIC 1
23
24 #endif
25
26 namespace v8 {
27
28 namespace internal {
29
30 #if defined(V8_INTL_SUPPORT) && (ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_FILE)
31 namespace {
32 char* g_icu_data_ptr = nullptr;
33
free_icu_data_ptr()34 void free_icu_data_ptr() { delete[] g_icu_data_ptr; }
35
36 } // namespace
37 #endif
38
InitializeICUDefaultLocation(const char * exec_path,const char * icu_data_file)39 bool InitializeICUDefaultLocation(const char* exec_path,
40 const char* icu_data_file) {
41 #if !defined(V8_INTL_SUPPORT)
42 return true;
43 #elif ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_FILE
44 if (icu_data_file) {
45 return InitializeICU(icu_data_file);
46 }
47 #if defined(V8_TARGET_LITTLE_ENDIAN)
48 std::unique_ptr<char[]> icu_data_file_default =
49 base::RelativePath(exec_path, "icudtl.dat");
50 #elif defined(V8_TARGET_BIG_ENDIAN)
51 std::unique_ptr<char[]> icu_data_file_default =
52 base::RelativePath(exec_path, "icudtb.dat");
53 #else
54 #error Unknown byte ordering
55 #endif
56 return InitializeICU(icu_data_file_default.get());
57 #else
58 return InitializeICU(nullptr);
59 #endif
60 }
61
InitializeICU(const char * icu_data_file)62 bool InitializeICU(const char* icu_data_file) {
63 #if !defined(V8_INTL_SUPPORT)
64 return true;
65 #else
66 #if ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_STATIC
67 // Use bundled ICU data.
68 return true;
69 #elif ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_FILE
70 if (!icu_data_file) return false;
71
72 if (g_icu_data_ptr) return true;
73
74 FILE* inf = fopen(icu_data_file, "rb");
75 if (!inf) return false;
76
77 fseek(inf, 0, SEEK_END);
78 size_t size = ftell(inf);
79 rewind(inf);
80
81 g_icu_data_ptr = new char[size];
82 if (fread(g_icu_data_ptr, 1, size, inf) != size) {
83 delete[] g_icu_data_ptr;
84 g_icu_data_ptr = nullptr;
85 fclose(inf);
86 return false;
87 }
88 fclose(inf);
89
90 atexit(free_icu_data_ptr);
91
92 UErrorCode err = U_ZERO_ERROR;
93 udata_setCommonData(reinterpret_cast<void*>(g_icu_data_ptr), &err);
94 // Never try to load ICU data from files.
95 udata_setFileAccess(UDATA_ONLY_PACKAGES, &err);
96 return err == U_ZERO_ERROR;
97 #endif
98 #endif
99 }
100
101 #undef ICU_UTIL_DATA_FILE
102 #undef ICU_UTIL_DATA_STATIC
103
104 } // namespace internal
105 } // namespace v8
106