build: Do not hardcode package formats in cli code

Now, it is possible to see a list of supported formats
with "-F help".

pisi/cli/build.py

@@ -45,8 +45,6 @@ class Build(command.Command):
 
     name = ("build", "bi")
 
-    package_formats = ("1.0", "1.1")
-
     def options(self):
         self.add_steps_options()
         group = optparse.OptionGroup(self.parser, _("build options"))
@@ -97,9 +95,9 @@ class Build(command.Command):
 
         group.add_option("-F", "--package-format",
                          action="store",
-                         default="1.1",
-                         help=_("PiSi binary package formats: "
-                                "'1.0', '1.1' (default)"))
+                         help=_("Create the binary package using the given "
+                                "format. Use '-F help' to see a list of "
+                                "supported formats."))
 
         group.add_option("--use-quilt",
                          action="store_true",
@@ -164,19 +162,26 @@ class Build(command.Command):
         self.parser.add_option_group(group)
 
     def run(self):
+        if not self.options.quiet:
+            self.options.debug = True
+
+        if self.options.package_format == "help":
+            self.init(False, False)
+            ctx.ui.info(_("Supported package formats:"))
+            build = pisi.operations.build
+            for format in build.Builder.package_formats:
+                if format == build.Builder.default_package_format:
+                    ctx.ui.info(_("  %s (default)") % format)
+                else:
+                    ctx.ui.info("  %s" % format)
+            return
+
         if not self.args:
             self.help()
             return
 
-        if not self.options.quiet:
-            self.options.debug = True
-
         self.init()
 
-        if ctx.get_option('package_format') not in Build.package_formats:
-            raise pisi.Error(_("Package format must be one of %s ")
-                             % pisi.util.strlist(Build.package_formats))
-
         if ctx.get_option('output_dir'):
             ctx.ui.info(_('Output directory: %s')
                         % ctx.config.options.output_dir)

pisi/operations/build.py

@@ -166,6 +166,9 @@ class Builder:
     """Provides the package build and creation routines"""
     #FIXME: this class and every other class must use URLs as paths!
 
+    package_formats = ("1.0", "1.1")
+    default_package_format = "1.1"
+
     @staticmethod
     def from_name(name):
         repodb = pisi.db.repodb.RepoDB()
@@ -215,6 +218,13 @@ class Builder:
         self.check_versioning(self.spec.getSourceVersion(),
                               self.spec.getSourceRelease())
 
+        # Check package format
+        self.target_package_format = ctx.get_option("package_format") \
+                                        or Builder.default_package_format
+        if self.target_package_format not in Builder.package_formats:
+            raise Error(_("Invalid package format: %s")
+                        % self.target_package_format)
+
         self.read_translations(self.specdir)
 
         self.sourceArchives = pisi.sourcearchive.SourceArchives(
@@ -780,7 +790,7 @@ class Builder:
         metadata.package.distribution = ctx.config.values.general.distribution
         metadata.package.distributionRelease = ctx.config.values.general.distribution_release
         metadata.package.architecture = ctx.config.values.general.architecture
-        metadata.package.packageFormat = ctx.get_option('package_format')
+        metadata.package.packageFormat = self.target_package_format
 
         size = 0
         for fileinfo in self.files.list:
@@ -1105,7 +1115,7 @@ class Builder:
             # performance of lzma.
             files.list.sort(key=lambda x: x.path)
 
-            if ctx.get_option('package_format') == "1.0":
+            if self.target_package_format == "1.0":
                 for finfo in files.list:
                     orgname = arcname = util.join_path("install", finfo.path)
                     if package.debug_package: