Don't wait until packaging for borking about invalid version strings

- Current pisi borks about invalid version string just before creating .pisi file.
Move that check to __init__ in Builder to fail as early as possible.

- Also handle unknown keywords in version strings to not fail with unhandled
exceptions.

ChangeLog

@@ -3,6 +3,11 @@
 		translations.xml reading.
 		* pisi/specfile.py (read_translations): Ignore source package
 		translations if <Name> is empty in translations.xml.
+		* pisi/version.py (VersionItem): Handle unknown keywords in version
+		strings,
+		* pisi/operations/build.py (Builder.__init__): Don't wait until
+		creating .pisi file for borking about invalid version strings e.g.
+		something like "0.5.6.1_x1219" in <Update> element.
 
 2010-01-12 Ozan Çağlayan <ozan@pardus.org.tr>
 		* pisi/actionsapi/get.py: Add ARCH() for getting host architecture.

pisi/operations/build.py

@@ -184,6 +184,9 @@ class Builder:
         else:
             self.specdir = os.path.dirname(self.specuri.get_uri())
 
+        # Don't wait until creating .pisi file for complaining about versioning scheme errors
+        self.check_versioning("%s-%s" % (self.spec.getSourceVersion(), self.spec.getSourceRelease()))
+
         self.read_translations(self.specdir)
 
         self.sourceArchive = pisi.sourcearchive.SourceArchive(self.spec, self.pkg_work_dir())
@@ -957,8 +960,6 @@ class Builder:
             self.metadata.package.build = build_no
             self.metadata.write(pisi.util.join_path(self.pkg_dir(), ctx.const.metadata_xml))
 
-            self.check_versioning("%s-%s" % (self.spec.getSourceVersion(), self.spec.getSourceRelease()))
-
             # Calculate new and oldpackage names for buildfarm
             name =  pisi.util.package_name(package.name,
                                      self.spec.getSourceVersion(),

pisi/version.py

@@ -25,13 +25,15 @@ maxdashes = 2
 # p > (no suffix) > m > rc > pre > beta > alpha
 # m: milestone. this was added for OO.o
 # p: patch-level
-keywords = {"alpha": 0,
-            "beta" : 1,
-            "pre"  : 2,
-            "rc"   : 3,
-            "m"    : 4,
+keywords = {
+            "alpha" : 0,
+            "beta"  : 1,
+            "pre"   : 2,
+            "rc"    : 3,
+            "m"     : 4,
             "NOKEY" : 5,
-            "p"    : 6}
+            "p"     : 6,
+            }
 
 # helper functions
 def has_keyword(versionitem):
@@ -71,6 +73,9 @@ class VersionItem:
             if len(itemstring) == 1 and itemstring in string.ascii_letters:
                 # single letter version item ('a' to 'Z')
                 self._value = itemstring
+            elif len(itemstring) > 1 and itemstring[0] in string.ascii_letters:
+                # Unknown keyword
+                raise VersionException("")
             else:
                 self._value = int(itemstring)
         else: