* 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.
This commit is contained in:
Eelco Dolstra 2011-10-10 18:12:40 +00:00
parent 55481c44d4
commit 73fe6871c4
6 changed files with 186 additions and 1 deletions

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@ -1,4 +1,4 @@
SUBDIRS = externals src scripts corepkgs doc misc tests SUBDIRS = externals src perl scripts corepkgs doc misc tests
EXTRA_DIST = substitute.mk nix.spec nix.spec.in bootstrap.sh \ EXTRA_DIST = substitute.mk nix.spec nix.spec.in bootstrap.sh \
nix.conf.example NEWS version nix.conf.example NEWS version

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@ -341,6 +341,7 @@ AC_CONFIG_FILES([Makefile
src/nix-setuid-helper/Makefile src/nix-setuid-helper/Makefile
src/nix-log2xml/Makefile src/nix-log2xml/Makefile
src/bsdiff-4.3/Makefile src/bsdiff-4.3/Makefile
perl/Makefile
scripts/Makefile scripts/Makefile
corepkgs/Makefile corepkgs/Makefile
corepkgs/nar/Makefile corepkgs/nar/Makefile

7
perl/MANIFEST Normal file
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@ -0,0 +1,7 @@
Changes
Makefile.PL
MANIFEST
Nix.xs
README
t/Nix.t
lib/Nix.pm

25
perl/Makefile.am Normal file
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@ -0,0 +1,25 @@
perlversion := $(shell perl -e 'use Config; print $$Config{version};')
perlarchname := $(shell perl -e 'use Config; print $$Config{archname};')
perllibdir = $(libdir)/perl5/site_perl/$(perlversion)/$(perlarchname)
install-exec-local: lib/Nix/*.pm
$(INSTALL) -d $(DESTDIR)$(perllibdir)/Nix
$(INSTALL_DATA) lib/Nix/*.pm $(DESTDIR)$(perllibdir)/Nix
$(INSTALL) -d $(DESTDIR)$(perllibdir)/auto/Nix/Store
ln -sfn $(pkglibdir)/libNixStore.so $(DESTDIR)$(perllibdir)/auto/Nix/Store/Store.so
# Awful hackery to get libtool to build Perl XS bindings.
pkglib_LTLIBRARIES = libNixStore.la
libNixStore_la_SOURCES = lib/Nix/Store.cc
libNixStore_la_LIBADD = $(top_srcdir)/src/libstore/libstore.la
AM_CXXFLAGS = \
-I$(top_srcdir)/src -I$(top_srcdir)/src/libutil -I$(top_srcdir)/src/libstore \
-I$(shell perl -e 'use Config; print $$Config{archlibexp};')/CORE
lib/Nix/Store.cc: lib/Nix/Store.xs
xsubpp $^ -output $@
EXTRA_DIST = lib/Nix/*.pm lib/Nix/Store.xs

23
perl/lib/Nix/Store.pm Normal file
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@ -0,0 +1,23 @@
package Nix::Store;
use 5.010001;
use strict;
use warnings;
require Exporter;
our @ISA = qw(Exporter);
our %EXPORT_TAGS = ( 'all' => [ qw( ) ] );
our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
our @EXPORT = qw( );
our $VERSION = '0.15';
require XSLoader;
XSLoader::load('Nix::Store', $VERSION);
1;
__END__

129
perl/lib/Nix/Store.xs Normal file
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@ -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());
}