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)
  23       ? base::UTF16ToASCII(base::StringPiece16(string))
  24       : std::string();
  25 }
  26
  27 WebMimeRegistry::SupportsType SimpleWebMimeRegistryImpl::supportsMIMEType(
  28     const WebString& mime_type) {
  29   return mime_util::IsSupportedMimeType(ToASCIIOrEmpty(mime_type))
  30              ? WebMimeRegistry::IsSupported
  31              : WebMimeRegistry::IsNotSupported;
  32 }
  33
  34 WebMimeRegistry::SupportsType SimpleWebMimeRegistryImpl::supportsImageMIMEType(
  35     const WebString& mime_type) {
  36   return mime_util::IsSupportedImageMimeType(ToASCIIOrEmpty(mime_type))
  37              ? WebMimeRegistry::IsSupported
  38              : WebMimeRegistry::IsNotSupported;
  39 }
  40
  41 WebMimeRegistry::SupportsType
  42     SimpleWebMimeRegistryImpl::supportsImagePrefixedMIMEType(
  43     const WebString& mime_type) {
  44     std::string ascii_mime_type = ToASCIIOrEmpty(mime_type);
  45     return (mime_util::IsSupportedImageMimeType(ascii_mime_type) ||
  46             (base::StartsWith(ascii_mime_type, "image/",
  47                               base::CompareCase::SENSITIVE) &&
  48              mime_util::IsSupportedNonImageMimeType(ascii_mime_type)))
  49                ? WebMimeRegistry::IsSupported
  50                : WebMimeRegistry::IsNotSupported;
  51 }
  52
  53 WebMimeRegistry::SupportsType
  54     SimpleWebMimeRegistryImpl::supportsJavaScriptMIMEType(
  55     const WebString& mime_type) {
  56   return mime_util::IsSupportedJavascriptMimeType(ToASCIIOrEmpty(mime_type))
  57              ? WebMimeRegistry::IsSupported
  58              : WebMimeRegistry::IsNotSupported;
  59 }
  60
  61 // When debugging layout tests failures in the test shell,
  62 // see TestShellWebMimeRegistryImpl.
  63 WebMimeRegistry::SupportsType SimpleWebMimeRegistryImpl::supportsMediaMIMEType(
  64     const WebString& mime_type,
  65     const WebString& codecs,
  66     const WebString& key_system) {
  67   // Media features are only supported at the content/renderer/ layer.
  68   return IsNotSupported;
  69 }
  70
  71 bool SimpleWebMimeRegistryImpl::supportsMediaSourceMIMEType(
  72     const WebString& mime_type,
  73     const WebString& codecs) {
  74   // Media features are only supported at the content/renderer layer.
  75   return false;
  76 }
  77
  78 WebMimeRegistry::SupportsType
  79     SimpleWebMimeRegistryImpl::supportsNonImageMIMEType(
  80     const WebString& mime_type) {
  81   return mime_util::IsSupportedNonImageMimeType(ToASCIIOrEmpty(mime_type))
  82              ? WebMimeRegistry::IsSupported
  83              : WebMimeRegistry::IsNotSupported;
  84 }
  85
  86 WebString SimpleWebMimeRegistryImpl::mimeTypeForExtension(
  87     const WebString& file_extension) {
  88   std::string mime_type;
  89   net::GetMimeTypeFromExtension(
  90       base::FilePath::FromUTF16Unsafe(file_extension).value(), &mime_type);
  91   return WebString::fromUTF8(mime_type);
  92 }
  93
  94 WebString SimpleWebMimeRegistryImpl::wellKnownMimeTypeForExtension(
  95     const WebString& file_extension) {
  96   std::string mime_type;
  97   net::GetWellKnownMimeTypeFromExtension(
  98       base::FilePath::FromUTF16Unsafe(file_extension).value(), &mime_type);
  99   return WebString::fromUTF8(mime_type);
 100 }
 101
 102 WebString SimpleWebMimeRegistryImpl::mimeTypeFromFile(
 103     const WebString& file_path) {
 104   std::string mime_type;
 105   net::GetMimeTypeFromFile(base::FilePath::FromUTF16Unsafe(file_path),
 106                            &mime_type);
 107   return WebString::fromUTF8(mime_type);
 108 }
 109
 110 }  // namespace content