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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 #include "bin/extensions.h" | 5 #include "bin/extensions.h" |
| 6 | 6 |
| 7 #include <stdio.h> | 7 #include <stdio.h> |
| 8 | 8 |
| 9 #include "bin/dartutils.h" | 9 #include "bin/dartutils.h" |
| 10 #include "bin/file.h" | 10 #include "bin/file.h" |
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| 21 const char* sep = File::PathSeparator(); | 21 const char* sep = File::PathSeparator(); |
| 22 ASSERT(strlen(sep) == 1); | 22 ASSERT(strlen(sep) == 1); |
| 23 return sep[0]; | 23 return sep[0]; |
| 24 } | 24 } |
| 25 | 25 |
| 26 | 26 |
| 27 void* Extensions::MakePathAndResolve(const char* dir, const char* name) { | 27 void* Extensions::MakePathAndResolve(const char* dir, const char* name) { |
| 28 // First try to find the library with a suffix specifying the architecture. | 28 // First try to find the library with a suffix specifying the architecture. |
| 29 { | 29 { |
| 30 const char* path_components[] = { | 30 const char* path_components[] = { |
| 31 dir, | 31 dir, |
| 32 Platform::LibraryPrefix(), | 32 Platform::LibraryPrefix(), |
| 33 name, | 33 name, |
| 34 "-", | 34 "-", |
| 35 Platform::HostArchitecture(), // arm | 35 Platform::HostArchitecture(), // arm |
| 36 ".", | 36 ".", |
| 37 Platform::LibraryExtension(), // so | 37 Platform::LibraryExtension(), // so |
| 38 NULL, | 38 NULL, |
| 39 }; | 39 }; |
| 40 const char* library_file = Concatenate(path_components); | 40 const char* library_file = Concatenate(path_components); |
| 41 void* library_handle = LoadExtensionLibrary(library_file); | 41 void* library_handle = LoadExtensionLibrary(library_file); |
| 42 if (library_handle != NULL) { | 42 if (library_handle != NULL) { |
| 43 return library_handle; | 43 return library_handle; |
| 44 } | 44 } |
| 45 } | 45 } |
| 46 | 46 |
| 47 // Fall back on a library name without the suffix. | 47 // Fall back on a library name without the suffix. |
| 48 { | 48 { |
| 49 const char* path_components[] = { | 49 const char* path_components[] = { |
| 50 dir, | 50 dir, |
| 51 Platform::LibraryPrefix(), | 51 Platform::LibraryPrefix(), |
| 52 name, | 52 name, |
| 53 ".", | 53 ".", |
| 54 Platform::LibraryExtension(), // so | 54 Platform::LibraryExtension(), // so |
| 55 NULL, | 55 NULL, |
| 56 }; | 56 }; |
| 57 const char* library_file = Concatenate(path_components); | 57 const char* library_file = Concatenate(path_components); |
| 58 return LoadExtensionLibrary(library_file); | 58 return LoadExtensionLibrary(library_file); |
| 59 } | 59 } |
| 60 } | 60 } |
| 61 | 61 |
| 62 | 62 |
| 63 // IMPORTANT: In the absolute path case, do not extract the filename and search | 63 // IMPORTANT: In the absolute path case, do not extract the filename and search |
| 64 // for that by passing it to LoadExtensionLibrary. That can lead to confusion in | 64 // for that by passing it to LoadExtensionLibrary. That can lead to confusion in |
| 65 // which the absolute path is wrong, and a different version of the library is | 65 // which the absolute path is wrong, and a different version of the library is |
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| 78 void* Extensions::ResolveExtension(const char* extension_directory, | 78 void* Extensions::ResolveExtension(const char* extension_directory, |
| 79 const char* extension_name) { | 79 const char* extension_name) { |
| 80 // If the path following dart-ext is an absolute path, then only look for the | 80 // If the path following dart-ext is an absolute path, then only look for the |
| 81 // library there. | 81 // library there. |
| 82 if (File::IsAbsolutePath(extension_name)) { | 82 if (File::IsAbsolutePath(extension_name)) { |
| 83 return ResolveAbsPathExtension(extension_name); | 83 return ResolveAbsPathExtension(extension_name); |
| 84 } | 84 } |
| 85 | 85 |
| 86 // If the path following dart-ext is just a file name, first look next to | 86 // If the path following dart-ext is just a file name, first look next to |
| 87 // the importing Dart library. | 87 // the importing Dart library. |
| 88 void* library_handle = MakePathAndResolve(extension_directory, | 88 void* library_handle = |
| 89 extension_name); | 89 MakePathAndResolve(extension_directory, extension_name); |
| 90 if (library_handle != NULL) { | 90 if (library_handle != NULL) { |
| 91 return library_handle; | 91 return library_handle; |
| 92 } | 92 } |
| 93 | 93 |
| 94 // Then pass the library name down to the platform. E.g. dlopen will do its | 94 // Then pass the library name down to the platform. E.g. dlopen will do its |
| 95 // own search in standard search locations. | 95 // own search in standard search locations. |
| 96 return MakePathAndResolve("", extension_name); | 96 return MakePathAndResolve("", extension_name); |
| 97 } | 97 } |
| 98 | 98 |
| 99 | 99 |
| 100 Dart_Handle Extensions::LoadExtension(const char* extension_directory, | 100 Dart_Handle Extensions::LoadExtension(const char* extension_directory, |
| 101 const char* extension_name, | 101 const char* extension_name, |
| 102 Dart_Handle parent_library) { | 102 Dart_Handle parent_library) { |
| 103 void* library_handle = ResolveExtension(extension_directory, extension_name); | 103 void* library_handle = ResolveExtension(extension_directory, extension_name); |
| 104 if (library_handle == NULL) { | 104 if (library_handle == NULL) { |
| 105 return GetError(); | 105 return GetError(); |
| 106 } | 106 } |
| 107 | 107 |
| 108 const char* extension = extension_name; | 108 const char* extension = extension_name; |
| 109 if (File::IsAbsolutePath(extension_name)) { | 109 if (File::IsAbsolutePath(extension_name)) { |
| 110 extension = strrchr(extension_name, PathSeparator()) + 1; | 110 extension = strrchr(extension_name, PathSeparator()) + 1; |
| 111 } | 111 } |
| 112 | 112 |
| 113 const char* strings[] = { extension, "_Init", NULL }; | 113 const char* strings[] = {extension, "_Init", NULL}; |
| 114 const char* init_function_name = Concatenate(strings); | 114 const char* init_function_name = Concatenate(strings); |
| 115 void* init_function = ResolveSymbol(library_handle, init_function_name); | 115 void* init_function = ResolveSymbol(library_handle, init_function_name); |
| 116 Dart_Handle result = GetError(); | 116 Dart_Handle result = GetError(); |
| 117 if (Dart_IsError(result)) { | 117 if (Dart_IsError(result)) { |
| 118 return result; | 118 return result; |
| 119 } | 119 } |
| 120 ASSERT(init_function != NULL); | 120 ASSERT(init_function != NULL); |
| 121 typedef Dart_Handle (*InitFunctionType)(Dart_Handle import_map); | 121 typedef Dart_Handle (*InitFunctionType)(Dart_Handle import_map); |
| 122 InitFunctionType fn = reinterpret_cast<InitFunctionType>(init_function); | 122 InitFunctionType fn = reinterpret_cast<InitFunctionType>(init_function); |
| 123 return (*fn)(parent_library); | 123 return (*fn)(parent_library); |
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| 136 for (int i = 0; strings[i] != NULL; i++) { | 136 for (int i = 0; strings[i] != NULL; i++) { |
| 137 index += snprintf(result + index, size - index, "%s", strings[i]); | 137 index += snprintf(result + index, size - index, "%s", strings[i]); |
| 138 } | 138 } |
| 139 ASSERT(index == size - 1); | 139 ASSERT(index == size - 1); |
| 140 ASSERT(result[size - 1] == '\0'); | 140 ASSERT(result[size - 1] == '\0'); |
| 141 return result; | 141 return result; |
| 142 } | 142 } |
| 143 | 143 |
| 144 } // namespace bin | 144 } // namespace bin |
| 145 } // namespace dart | 145 } // namespace dart |
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