gin/test/file.cc

   1 // Copyright 2014 The Chromium 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 "gin/test/file.h"
   6
   7 #include <iostream>
   8
   9 #include "base/bind.h"
  10 #include "base/files/file_enumerator.h"
  11 #include "base/files/file_path.h"
  12 #include "base/files/file_util.h"
  13 #include "base/path_service.h"
  14 #include "gin/arguments.h"
  15 #include "gin/converter.h"
  16 #include "gin/object_template_builder.h"
  17 #include "gin/per_isolate_data.h"
  18 #include "gin/public/wrapper_info.h"
  19
  20 using v8::ObjectTemplate;
  21
  22 namespace gin {
  23
  24 namespace {
  25
  26 v8::Handle<v8::Value> ReadFileToString(gin::Arguments* args) {
  27   std::string filename;
  28   if (!args->GetNext(&filename))
  29     return v8::Null(args->isolate());
  30
  31   const base::FilePath& path = base::FilePath::FromUTF8Unsafe(filename);
  32   std::string contents;
  33   if (!ReadFileToString(path, &contents))
  34     return v8::Null(args->isolate());
  35
  36   return gin::Converter<std::string>::ToV8(args->isolate(), contents);
  37 }
  38
  39 v8::Handle<v8::Value> GetSourceRootDirectory(gin::Arguments* args) {
  40   base::FilePath path;
  41   if (!PathService::Get(base::DIR_SOURCE_ROOT, &path))
  42     return v8::Null(args->isolate());
  43   return gin::Converter<std::string>::ToV8(args->isolate(),
  44                                            path.AsUTF8Unsafe());
  45 }
  46
  47 v8::Handle<v8::Value> GetFilesInDirectory(gin::Arguments* args) {
  48   std::string filename;
  49   if (!args->GetNext(&filename))
  50     return v8::Null(args->isolate());
  51
  52   const base::FilePath& path = base::FilePath::FromUTF8Unsafe(filename);
  53   if (!base::DirectoryExists(path))
  54     return v8::Null(args->isolate());
  55
  56   std::vector<std::string> names;
  57   base::FileEnumerator e(path, false, base::FileEnumerator::FILES);
  58   for (base::FilePath name = e.Next(); !name.empty(); name = e.Next()) {
  59     names.push_back(name.BaseName().AsUTF8Unsafe());
  60   }
  61
  62   return gin::Converter<std::vector<std::string> >::ToV8(args->isolate(),
  63                                                          names);
  64 }
  65
  66 gin::WrapperInfo g_wrapper_info = { gin::kEmbedderNativeGin };
  67
  68 }  // namespace
  69
  70 const char File::kModuleName[] = "file";
  71
  72 v8::Local<v8::Value> File::GetModule(v8::Isolate* isolate) {
  73   gin::PerIsolateData* data = gin::PerIsolateData::From(isolate);
  74   v8::Local<ObjectTemplate> templ = data->GetObjectTemplate(&g_wrapper_info);
  75   if (templ.IsEmpty()) {
  76     templ = gin::ObjectTemplateBuilder(isolate)
  77         .SetMethod("readFileToString", ReadFileToString)
  78         .SetMethod("getFilesInDirectory", GetFilesInDirectory)
  79         .SetMethod("getSourceRootDirectory", GetSourceRootDirectory)
  80         .Build();
  81     data->SetObjectTemplate(&g_wrapper_info, templ);
  82   }
  83   return templ->NewInstance();
  84 }
  85
  86 }  // namespace gin