content/child/simple_webmimeregistry_impl.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 "content/child/simple_webmimeregistry_impl.h"
   6
   7 #include "base/files/file_path.h"
   8 #include "base/strings/string_util.h"
   9 #include "base/strings/sys_string_conversions.h"
  10 #include "base/strings/utf_string_conversions.h"
  11 #include "components/mime_util/mime_util.h"
  12 #include "net/base/mime_util.h"
  13 #include "third_party/WebKit/public/platform/WebString.h"
  14
  15 using blink::WebString;
  16 using blink::WebMimeRegistry;
  17
  18 namespace content {
  19
  20 //static
  21 std::string SimpleWebMimeRegistryImpl::ToASCIIOrEmpty(const WebString& string) {
  22   return base::IsStringASCII(string) ? base::UTF16ToASCII(string)
  23                                      : std::string();
  24 }
  25
  26 WebMimeRegistry::SupportsType SimpleWebMimeRegistryImpl::supportsMIMEType(
  27     const WebString& mime_type) {
  28   return mime_util::IsSupportedMimeType(ToASCIIOrEmpty(mime_type))
  29              ? WebMimeRegistry::IsSupported
  30              : WebMimeRegistry::IsNotSupported;
  31 }
  32
  33 WebMimeRegistry::SupportsType SimpleWebMimeRegistryImpl::supportsImageMIMEType(
  34     const WebString& mime_type) {
  35   return mime_util::IsSupportedImageMimeType(ToASCIIOrEmpty(mime_type))
  36              ? WebMimeRegistry::IsSupported
  37              : WebMimeRegistry::IsNotSupported;
  38 }
  39
  40 WebMimeRegistry::SupportsType
  41     SimpleWebMimeRegistryImpl::supportsImagePrefixedMIMEType(
  42     const WebString& mime_type) {
  43     std::string ascii_mime_type = ToASCIIOrEmpty(mime_type);
  44     return (mime_util::IsSupportedImageMimeType(ascii_mime_type) ||
  45             (base::StartsWithASCII(ascii_mime_type, "image/", true) &&
  46              mime_util::IsSupportedNonImageMimeType(ascii_mime_type)))
  47                ? WebMimeRegistry::IsSupported
  48                : WebMimeRegistry::IsNotSupported;
  49 }
  50
  51 WebMimeRegistry::SupportsType
  52     SimpleWebMimeRegistryImpl::supportsJavaScriptMIMEType(
  53     const WebString& mime_type) {
  54   return mime_util::IsSupportedJavascriptMimeType(ToASCIIOrEmpty(mime_type))
  55              ? WebMimeRegistry::IsSupported
  56              : WebMimeRegistry::IsNotSupported;
  57 }
  58
  59 // When debugging layout tests failures in the test shell,
  60 // see TestShellWebMimeRegistryImpl.
  61 WebMimeRegistry::SupportsType SimpleWebMimeRegistryImpl::supportsMediaMIMEType(
  62     const WebString& mime_type,
  63     const WebString& codecs,
  64     const WebString& key_system) {
  65   // Media features are only supported at the content/renderer/ layer.
  66   return IsNotSupported;
  67 }
  68
  69 bool SimpleWebMimeRegistryImpl::supportsMediaSourceMIMEType(
  70     const WebString& mime_type,
  71     const WebString& codecs) {
  72   // Media features are only supported at the content/renderer layer.
  73   return false;
  74 }
  75
  76 WebMimeRegistry::SupportsType
  77     SimpleWebMimeRegistryImpl::supportsNonImageMIMEType(
  78     const WebString& mime_type) {
  79   return mime_util::IsSupportedNonImageMimeType(ToASCIIOrEmpty(mime_type))
  80              ? WebMimeRegistry::IsSupported
  81              : WebMimeRegistry::IsNotSupported;
  82 }
  83
  84 WebString SimpleWebMimeRegistryImpl::mimeTypeForExtension(
  85     const WebString& file_extension) {
  86   std::string mime_type;
  87   net::GetMimeTypeFromExtension(
  88       base::FilePath::FromUTF16Unsafe(file_extension).value(), &mime_type);
  89   return WebString::fromUTF8(mime_type);
  90 }
  91
  92 WebString SimpleWebMimeRegistryImpl::wellKnownMimeTypeForExtension(
  93     const WebString& file_extension) {
  94   std::string mime_type;
  95   net::GetWellKnownMimeTypeFromExtension(
  96       base::FilePath::FromUTF16Unsafe(file_extension).value(), &mime_type);
  97   return WebString::fromUTF8(mime_type);
  98 }
  99
 100 WebString SimpleWebMimeRegistryImpl::mimeTypeFromFile(
 101     const WebString& file_path) {
 102   std::string mime_type;
 103   net::GetMimeTypeFromFile(base::FilePath::FromUTF16Unsafe(file_path),
 104                            &mime_type);
 105   return WebString::fromUTF8(mime_type);
 106 }
 107
 108 }  // namespace content