calculate only expected hashes in methods

[apt.git] / methods / file.cc

diff --git a/methods/file.cc b/methods/file.cc
index 017222d84cef69dbb6df50e181d6a5bd5c8b6f95..043ab04b8286c68c03ad8290a5a1f0c918ba7eef 100644 (file)
--- a/methods/file.cc
+++ b/methods/file.cc
@@ -1,9 +1,105 @@
-#include <stdio.h>
+// -*- mode: cpp; mode: fold -*-
+// Description                                                         /*{{{*/
+// $Id: file.cc,v 1.9.2.1 2004/01/16 18:58:50 mdz Exp $
+/* ######################################################################
+
+   File URI method for APT
+   
+   This simply checks that the file specified exists, if so the relevant
+   information is returned. If a .gz filename is specified then the file
+   name with .gz removed will also be checked and information about it
+   will be returned in Alt-*
+   
+   ##################################################################### */
+                                                                       /*}}}*/
+// Include Files                                                       /*{{{*/
+#include <config.h>
+
+#include <apt-pkg/acquire-method.h>
+#include <apt-pkg/aptconfiguration.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/hashes.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/strutl.h>
+
+#include <string>
+#include <sys/stat.h>
+
+#include <apti18n.h>
+                                                                       /*}}}*/
+
+class FileMethod : public pkgAcqMethod
+{
+   virtual bool Fetch(FetchItem *Itm);
+   
+   public:
+   
+   FileMethod() : pkgAcqMethod("1.0",SingleInstance | SendConfig | LocalOnly) {};
+};
+
+// FileMethod::Fetch - Fetch a file                                    /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool FileMethod::Fetch(FetchItem *Itm)
+{
+   URI Get = Itm->Uri;
+   std::string File = Get.Path;
+   FetchResult Res;
+   if (Get.Host.empty() == false)
+      return _error->Error(_("Invalid URI, local URIS must not start with //"));
+
+   // See if the file exists
+   struct stat Buf;
+   if (stat(File.c_str(),&Buf) == 0)
+   {
+      Res.Size = Buf.st_size;
+      Res.Filename = File;
+      Res.LastModified = Buf.st_mtime;
+      Res.IMSHit = false;
+      if (Itm->LastModified == Buf.st_mtime && Itm->LastModified != 0)
+        Res.IMSHit = true;
+   }
+
+   // See if the uncompressed file exists and reuse it
+   std::vector<std::string> extensions = APT::Configuration::getCompressorExtensions();
+   for (std::vector<std::string>::const_iterator ext = extensions.begin(); ext != extensions.end(); ++ext)
+   {
+      if (APT::String::Endswith(File, *ext) == true)
+      {
+        std::string const unfile = File.substr(0, File.length() - ext->length() - 1);
+        if (stat(unfile.c_str(),&Buf) == 0)
+        {
+           FetchResult AltRes;
+           AltRes.Size = Buf.st_size;
+           AltRes.Filename = unfile;
+           AltRes.LastModified = Buf.st_mtime;
+           AltRes.IMSHit = false;
+           if (Itm->LastModified == Buf.st_mtime && Itm->LastModified != 0)
+              AltRes.IMSHit = true;
+
+           URIDone(Res,&AltRes);
+           return true;
+        }
+        // no break here as we could have situations similar to '.gz' vs '.tar.gz' here
+      }
+   }
+
+   if (Res.Filename.empty() == true)
+      return _error->Error(_("File not found"));
+
+   Hashes Hash(Itm->ExpectedHashes);
+   FileFd Fd(Res.Filename, FileFd::ReadOnly);
+   Hash.AddFD(Fd);
+   Res.TakeHashes(Hash);
+   URIDone(Res);
+   return true;
+}
+                                                                       /*}}}*/
 
 int main()
 {
-   printf("100 Capabilities\n"
-         "Version: 1.0\n"
-         "Pre-Scan: true\n\n"
-         "Version: 1.0\n\n");
+   setlocale(LC_ALL, "");
+
+   FileMethod Mth;
+   return Mth.Run();
 }