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authorEelco Dolstra <e.dolstra@tudelft.nl>2005-01-25T11·18+0000
committerEelco Dolstra <e.dolstra@tudelft.nl>2005-01-25T11·18+0000
commit52bf9b86bb79369b7f7b5b8a5726b83ee154da6a (patch)
treecda06cd7d3bb5d8d3a62a6881533a36860c7acfb /src/nix-store/main.cc
parent80faa2f98af8616ab89ac2af63431b887a84fb32 (diff)
* In nix-store: added query `--referers-closure' that returns the
  closure of the referers relation rather than the references
  relation, i.e., the set of all paths that directly or indirectly
  refer to the given path.  Note that contrary to the references
  closure this set is not fixed; it can change as paths are added to
  or removed from the store.

Diffstat (limited to 'src/nix-store/main.cc')
-rw-r--r--src/nix-store/main.cc8
1 files changed, 6 insertions, 2 deletions
diff --git a/src/nix-store/main.cc b/src/nix-store/main.cc
index addf9c7d0d..dc7a6de8b8 100644
--- a/src/nix-store/main.cc
+++ b/src/nix-store/main.cc
@@ -96,7 +96,8 @@ static void printPathSet(const PathSet & paths)
 /* Perform various sorts of queries. */
 static void opQuery(Strings opFlags, Strings opArgs)
 {
-    enum { qOutputs, qRequisites, qReferences, qReferers, qGraph } query = qOutputs;
+    enum { qOutputs, qRequisites, qReferences, qReferers,
+           qReferersClosure, qGraph } query = qOutputs;
     bool useOutput = false;
     bool includeOutputs = false;
     bool forceRealise = false;
@@ -107,6 +108,7 @@ static void opQuery(Strings opFlags, Strings opArgs)
         else if (*i == "--requisites" || *i == "-R") query = qRequisites;
         else if (*i == "--references") query = qReferences;
         else if (*i == "--referers") query = qReferers;
+        else if (*i == "--referers-closure") query = qReferersClosure;
         else if (*i == "--graph") query = qGraph;
         else if (*i == "--use-output" || *i == "-u") useOutput = true;
         else if (*i == "--force-realise" || *i == "-f") forceRealise = true;
@@ -128,7 +130,8 @@ static void opQuery(Strings opFlags, Strings opArgs)
 
         case qRequisites:
         case qReferences:
-        case qReferers: {
+        case qReferers:
+        case qReferersClosure: {
             PathSet paths;
             for (Strings::iterator i = opArgs.begin();
                  i != opArgs.end(); i++)
@@ -138,6 +141,7 @@ static void opQuery(Strings opFlags, Strings opArgs)
                     storePathRequisites(path, includeOutputs, paths);
                 else if (query == qReferences) queryReferences(path, paths);
                 else if (query == qReferers) queryReferers(path,  paths);
+                else if (query == qReferersClosure) computeFSClosure(path, paths, true);
             }
             printPathSet(paths);
             break;