X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/258b9e512c4001e806c5c0966acecd3d742ec6e9..2853201580944cb4e5a2a8a810e800e89e9a0475:/methods/rred.cc

diff --git a/methods/rred.cc b/methods/rred.cc
index bb801cb4e..79ab8cb52 100644
--- a/methods/rred.cc
+++ b/methods/rred.cc
@@ -7,6 +7,7 @@
 
 #include <config.h>
 
+#include <apt-pkg/init.h>
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/acquire-method.h>
@@ -490,7 +491,11 @@ class Patch {
       for (ch = filechanges.rbegin(); ch != filechanges.rend(); ++ch) {
 	 std::list<struct Change>::reverse_iterator mg_i, mg_e = ch;
 	 while (ch->del_cnt == 0 && ch->offset == 0)
+	 {
 	    ++ch;
+	    if (unlikely(ch == filechanges.rend()))
+	       return;
+	 }
 	 line -= ch->del_cnt;
 	 std::string buf;
 	 if (ch->add_cnt > 0) {
@@ -530,6 +535,7 @@ class Patch {
 	 dump_mem(out, ch->add, ch->add_len, hash);
       }
       dump_rest(out, in, hash);
+      out.Flush();
    }
 };
 
@@ -642,7 +648,7 @@ class RredMethod : public aptMethod {
 	    std::cerr << "FAILED to open inp " << Path << std::endl;
 	    return _error->Error("Failed to open inp %s", Path.c_str());
 	 }
-	 if (out.Open(Itm->DestFile, FileFd::WriteOnly | FileFd::Create, FileFd::Extension) == false)
+	 if (out.Open(Itm->DestFile, FileFd::WriteOnly | FileFd::Create | FileFd::BufferedWrite, FileFd::Extension) == false)
 	 {
 	    std::cerr << "FAILED to open out " << Itm->DestFile << std::endl;
 	    return _error->Error("Failed to open out %s", Itm->DestFile.c_str());
@@ -654,6 +660,11 @@ class RredMethod : public aptMethod {
 	 out.Close();
 	 inp.Close();
 
+	 if (_error->PendingError() == true) {
+	    std::cerr << "FAILED to read or write files" << std::endl;
+	    return false;
+	 }
+
 	 if (Debug == true) {
 	    std::clog << "rred: finished file patching of " << Path  << "." << std::endl;
 	 }
@@ -661,7 +672,7 @@ class RredMethod : public aptMethod {
 	 struct stat bufbase, bufpatch;
 	 if (stat(Path.c_str(), &bufbase) != 0 ||
 	       stat(patch_name.c_str(), &bufpatch) != 0)
-	    return _error->Errno("stat", _("Failed to stat"));
+	    return _error->Errno("stat", _("Failed to stat %s"), Path.c_str());
 
 	 struct timeval times[2];
 	 times[0].tv_sec = bufbase.st_atime;
@@ -671,7 +682,7 @@ class RredMethod : public aptMethod {
 	    return _error->Errno("utimes",_("Failed to set modification time"));
 
 	 if (stat(Itm->DestFile.c_str(), &bufbase) != 0)
-	    return _error->Errno("stat", _("Failed to stat"));
+	    return _error->Errno("stat", _("Failed to stat %s"), Itm->DestFile.c_str());
 
 	 Res.LastModified = bufbase.st_mtime;
 	 Res.Size = bufbase.st_size;
@@ -682,13 +693,14 @@ class RredMethod : public aptMethod {
       }
 
    public:
-      RredMethod() : aptMethod("rred", "2.0",SingleInstance | SendConfig), Debug(false) {}
+      RredMethod() : aptMethod("rred", "2.0", SendConfig), Debug(false) {}
 };
 
 int main(int argc, char **argv)
 {
    int i;
    bool just_diff = true;
+   bool test = false;
    Patch patch;
 
    if (argc <= 1) {
@@ -696,7 +708,14 @@ int main(int argc, char **argv)
       return Mth.Run();
    }
 
-   if (argc > 1 && strcmp(argv[1], "-f") == 0) {
+   // Usage: rred -t input output diff ...
+   if (argc > 1 && strcmp(argv[1], "-t") == 0) {
+      // Read config files so we see compressors.
+      pkgInitConfig(*_config);
+      just_diff = false;
+      test = true;
+      i = 4;
+   } else if (argc > 1 && strcmp(argv[1], "-f") == 0) {
       just_diff = false;
       i = 2;
    } else {
@@ -716,15 +735,24 @@ int main(int argc, char **argv)
       }
    }
 
-   if (just_diff) {
+   if (test) {
+      FileFd out, inp;
+      std::cerr << "Patching " << argv[2] << " into " << argv[3] << "\n";
+      inp.Open(argv[2], FileFd::ReadOnly,FileFd::Extension);
+      out.Open(argv[3], FileFd::WriteOnly | FileFd::Create | FileFd::BufferedWrite, FileFd::Extension);
+      patch.apply_against_file(out, inp);
+      out.Close();
+   } else if (just_diff) {
       FileFd out;
       out.OpenDescriptor(STDOUT_FILENO, FileFd::WriteOnly | FileFd::Create);
       patch.write_diff(out);
+      out.Close();
    } else {
       FileFd out, inp;
-      out.OpenDescriptor(STDOUT_FILENO, FileFd::WriteOnly | FileFd::Create);
+      out.OpenDescriptor(STDOUT_FILENO, FileFd::WriteOnly | FileFd::Create | FileFd::BufferedWrite);
       inp.OpenDescriptor(STDIN_FILENO, FileFd::ReadOnly);
       patch.apply_against_file(out, inp);
+      out.Close();
    }
    return 0;
 }