Add --nodownload option to print packages instead of downloading them.

This allows other tools to use Pungi for depsolving and process
packages in their own way.

src/bin/pungi.py

@@ -110,12 +110,27 @@ def main():
                     mypungi.completePackageSet()
                     if plen == len(mypungi.srpmpolist):
                         break
+            if opts.nodownload:
+                for line in mypungi.listPackages():
+                    sys.stdout.write("RPM: %s\n" % line)
+                sys.stdout.flush()
+            else:
                 mypungi.downloadPackages()
             mypungi.makeCompsFile()
             if not opts.nodebuginfo:
                 mypungi.getDebuginfoList()
+                if opts.nodownload:
+                    for line in mypungi.listDebuginfo():
+                        sys.stdout.write("DEBUGINFO: %s\n" % line)
+                    sys.stdout.flush()
+                else:
                     mypungi.downloadDebuginfo()
             if not opts.nosource:
+                if opts.nodownload:
+                    for line in mypungi.listSRPMs():
+                        sys.stdout.write("SRPM: %s\n" % line)
+                    sys.stdout.flush()
+                else:
                     mypungi.downloadSRPMs()
 
         if opts.do_all or opts.do_createrepo:
@@ -184,6 +199,8 @@ if __name__ == '__main__':
           help='disable gathering of source packages (optional)')
         parser.add_option("--nodebuginfo", action="store_true", dest="nodebuginfo",
           help='disable gathering of debuginfo packages (optional)')
+        parser.add_option("--nodownload", action="store_true", dest="nodownload",
+          help='disable downloading of packages. instead, print the package URLs (optional)')
         parser.add_option("--nogreedy", action="store_true", dest="nogreedy",
           help='disable pulling of all providers of package dependencies (optional)')
         parser.add_option("--sourceisos", default=False, action="store_true", dest="sourceisos",

src/pypungi/__init__.py

@@ -728,6 +728,22 @@ class Pungi(pypungi.PungiBase):
         self._downloadPackageList(self.debuginfolist, os.path.join(self.config.get('pungi', 'arch'),
                                                            'debug'))
 
+    def _listPackages(self, polist):
+        """Cycle through the list of packages and return their paths."""
+        return [ os.path.join(pkg.basepath or "", pkg.relativepath) for pkg in polist ]
+
+    def listPackages(self):
+        """Cycle through the list of RPMs and return their paths."""
+        return self._listPackages(self.polist)
+
+    def listSRPMs(self):
+        """Cycle through the list of SRPMs and return their paths."""
+        return self._listPackages(self.srpmpolist)
+
+    def listDebuginfo(self):
+        """Cycle through the list of DEBUGINFO RPMs and return their paths."""
+        return self._listPackages(self.debuginfolist)
+
     def writeinfo(self, line):
         """Append a line to the infofile in self.infofile"""