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authorEelco Dolstra <e.dolstra@tudelft.nl>2011-10-10T18·12+0000
committerEelco Dolstra <e.dolstra@tudelft.nl>2011-10-10T18·12+0000
commit73fe6871c479f7670f8c93b0cc9ef7bb1a851777 (patch)
tree41b4e3c7bc772bdd3e1df34fb929faa6e70268d0 /perl/lib/Nix/Store.xs
parent55481c44d4767ffde561c02b039717916e0536f6 (diff)
* Include the Nix Perl bindings in Nix itself. This will allow the
  bindings to be used in Nix's own Perl scripts.

  The only downside is that Perl XS and Automake/libtool don't really
  like each other, so building is a bit tricky.

Diffstat (limited to 'perl/lib/Nix/Store.xs')
-rw-r--r--perl/lib/Nix/Store.xs129
1 files changed, 129 insertions, 0 deletions
diff --git a/perl/lib/Nix/Store.xs b/perl/lib/Nix/Store.xs
new file mode 100644
index 000000000000..dd5cffdbb7b3
--- /dev/null
+++ b/perl/lib/Nix/Store.xs
@@ -0,0 +1,129 @@
+#include "EXTERN.h"
+#include "perl.h"
+#include "XSUB.h"
+
+/* Prevent a clash between some Perl and libstdc++ macros. */
+#undef do_open
+#undef do_close
+
+#include <store-api.hh>
+#include <globals.hh>
+#include <misc.hh>
+#include <util.hh>
+
+
+using namespace nix;
+
+
+void doInit() 
+{
+    if (!store) {
+        nixStore = canonPath(getEnv("NIX_STORE_DIR", getEnv("NIX_STORE", "/nix/store")));
+        nixStateDir = canonPath(getEnv("NIX_STATE_DIR", "/nix/var/nix"));
+        nixDBPath = getEnv("NIX_DB_DIR", nixStateDir + "/db");
+        try {
+            store = openStore();
+        } catch (Error & e) {
+            croak(e.what());
+        }
+    }
+}
+
+
+MODULE = Nix::Store PACKAGE = Nix::Store
+PROTOTYPES: ENABLE
+
+
+void init()
+    CODE:
+        doInit();
+
+
+int isValidPath(path)
+        char * path
+    CODE:
+        try {
+            doInit();
+            RETVAL = store->isValidPath(path);
+        } catch (Error & e) {
+            croak(e.what());
+        }
+    OUTPUT:
+        RETVAL
+
+
+SV * queryReferences(path)
+        char * path
+    PPCODE:
+        try {
+            doInit();
+            PathSet paths;
+            store->queryReferences(path, paths);
+            for (PathSet::iterator i = paths.begin(); i != paths.end(); ++i)
+                XPUSHs(sv_2mortal(newSVpv(i->c_str(), 0)));
+        } catch (Error & e) {
+            croak(e.what());
+        }
+
+
+SV * queryPathHash(path)
+        char * path
+    PPCODE:
+        try {
+            doInit();
+            Hash hash = store->queryPathHash(path);
+            string s = "sha256:" + printHash(hash);
+            XPUSHs(sv_2mortal(newSVpv(s.c_str(), 0)));
+        } catch (Error & e) {
+            croak(e.what());
+        }
+
+
+SV * queryDeriver(path)
+        char * path
+    PPCODE:
+        try {
+            doInit();
+            Path deriver = store->queryDeriver(path);
+            if (deriver == "") XSRETURN_UNDEF;
+            XPUSHs(sv_2mortal(newSVpv(deriver.c_str(), 0)));
+        } catch (Error & e) {
+            croak(e.what());
+        }
+
+
+SV * queryPathInfo(path)
+        char * path
+    PPCODE:
+        try {
+            doInit();
+            ValidPathInfo info = store->queryPathInfo(path);
+            if (info.deriver == "")
+                XPUSHs(&PL_sv_undef);
+            else
+                XPUSHs(sv_2mortal(newSVpv(info.deriver.c_str(), 0)));
+            string s = "sha256:" + printHash(info.hash);
+            XPUSHs(sv_2mortal(newSVpv(s.c_str(), 0)));
+            mXPUSHi(info.registrationTime);
+            mXPUSHi(info.narSize);
+            AV * arr = newAV();
+            for (PathSet::iterator i = info.references.begin(); i != info.references.end(); ++i)
+                av_push(arr, newSVpv(i->c_str(), 0));
+            XPUSHs(sv_2mortal(newRV((SV *) arr)));
+        } catch (Error & e) {
+            croak(e.what());
+        }
+
+
+SV * computeFSClosure(int flipDirection, int includeOutputs, ...)
+    PPCODE:
+        try {
+            doInit();
+            PathSet paths;
+            for (int n = 2; n < items; ++n)
+                computeFSClosure(*store, SvPV_nolen(ST(n)), paths, flipDirection, includeOutputs);
+            for (PathSet::iterator i = paths.begin(); i != paths.end(); ++i)
+                XPUSHs(sv_2mortal(newSVpv(i->c_str(), 0)));
+        } catch (Error & e) {
+            croak(e.what());
+        }