uriloader/exthandler/unix/nsGNOMERegistry.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "nsGNOMERegistry.h"
   7 #include "nsString.h"
   8 #include "nsMIMEInfoUnix.h"
   9 #include "nsIGIOService.h"
  10
  11 /* static */
  12 bool nsGNOMERegistry::HandlerExists(const char* aProtocolScheme) {
  13   nsCOMPtr<nsIGIOService> giovfs = do_GetService(NS_GIOSERVICE_CONTRACTID);
  14   if (!giovfs) {
  15     return false;
  16   }
  17
  18   nsCOMPtr<nsIHandlerApp> app;
  19   return NS_SUCCEEDED(giovfs->GetAppForURIScheme(
  20       nsDependentCString(aProtocolScheme), getter_AddRefs(app)));
  21 }
  22
  23 // XXX Check HandlerExists() before calling LoadURL.
  24
  25 /* static */
  26 nsresult nsGNOMERegistry::LoadURL(nsIURI* aURL) {
  27   nsCOMPtr<nsIGIOService> giovfs = do_GetService(NS_GIOSERVICE_CONTRACTID);
  28   if (!giovfs) {
  29     return NS_ERROR_FAILURE;
  30   }
  31
  32   return giovfs->ShowURI(aURL);
  33 }
  34
  35 /* static */
  36 void nsGNOMERegistry::GetAppDescForScheme(const nsACString& aScheme,
  37                                           nsAString& aDesc) {
  38   nsCOMPtr<nsIGIOService> giovfs = do_GetService(NS_GIOSERVICE_CONTRACTID);
  39   if (!giovfs) return;
  40
  41   nsCOMPtr<nsIHandlerApp> app;
  42   if (NS_FAILED(giovfs->GetAppForURIScheme(aScheme, getter_AddRefs(app))))
  43     return;
  44
  45   app->GetName(aDesc);
  46 }
  47
  48 /* static */
  49 already_AddRefed<nsMIMEInfoBase> nsGNOMERegistry::GetFromExtension(
  50     const nsACString& aFileExt) {
  51   nsAutoCString mimeType;
  52   nsCOMPtr<nsIGIOService> giovfs = do_GetService(NS_GIOSERVICE_CONTRACTID);
  53   if (!giovfs) {
  54     return nullptr;
  55   }
  56
  57   // Get the MIME type from the extension, then call GetFromType to
  58   // fill in the MIMEInfo.
  59   if (NS_FAILED(giovfs->GetMimeTypeFromExtension(aFileExt, mimeType)) ||
  60       mimeType.EqualsLiteral("application/octet-stream")) {
  61     return nullptr;
  62   }
  63
  64   RefPtr<nsMIMEInfoBase> mi = GetFromType(mimeType);
  65   if (mi) {
  66     mi->AppendExtension(aFileExt);
  67   }
  68
  69   return mi.forget();
  70 }
  71
  72 /* static */
  73 already_AddRefed<nsMIMEInfoBase> nsGNOMERegistry::GetFromType(
  74     const nsACString& aMIMEType) {
  75   RefPtr<nsMIMEInfoUnix> mimeInfo = new nsMIMEInfoUnix(aMIMEType);
  76   NS_ENSURE_TRUE(mimeInfo, nullptr);
  77
  78   nsAutoString name;
  79   nsAutoCString description;
  80
  81   nsCOMPtr<nsIGIOService> giovfs = do_GetService(NS_GIOSERVICE_CONTRACTID);
  82   if (!giovfs) {
  83     return nullptr;
  84   }
  85
  86   nsCOMPtr<nsIHandlerApp> handlerApp;
  87   if (NS_FAILED(
  88           giovfs->GetAppForMimeType(aMIMEType, getter_AddRefs(handlerApp))) ||
  89       !handlerApp) {
  90     return nullptr;
  91   }
  92   handlerApp->GetName(name);
  93   giovfs->GetDescriptionForMimeType(aMIMEType, description);
  94
  95   mimeInfo->SetDefaultDescription(name);
  96
  97   mimeInfo->SetPreferredAction(nsIMIMEInfo::saveToDisk);
  98   mimeInfo->SetDescription(NS_ConvertUTF8toUTF16(description));
  99
 100   return mimeInfo.forget();
 101 }