example: Simple repodata parser example

diff --git a/examples/python/repodata_parsing.py b/examples/python/repodata_parsing.py
new file mode 100755 (executable)
index 0000000..36b07b9
--- /dev/null
+++ b/examples/python/repodata_parsing.py
@@ -0,0 +1,80 @@
+#!/usr/bin/env python
+
+import os
+import os.path
+
+import createrepo_c as cr
+
+REPO_PATH = "repo/"
+
+def first_method():
+    md = cr.Metadata()
+    md.locate_and_load_xml(REPO_PATH)
+    for key in md.keys():
+        pkg = md.get(key)
+        print pkg, pkg.location_href
+
+        #print pkg.name
+        #print pkg.location_href
+        #print "  Packages:"
+
+        #for f in pkg.files:
+        #    print f
+        #print "  Changelogs:"
+        #for c in pkg.changelogs:
+        #    print c
+        #print "  Obsoletes:"
+        #for o in pkg.obsoletes:
+        #    print o
+
+def second_method():
+    # Parse repomd.xml to get paths
+    repomd = cr.Repomd(os.path.join(REPO_PATH, "repodata/repomd.xml"))
+
+    primary_xml_path   = None
+    filelists_xml_path = None
+    other_xml_path     = None
+
+    for record in repomd.records:
+        if record.type == "primary":
+            primary_xml_path = record.location_href
+        elif record.type == "filelists":
+            filelists_xml_path = record.location_href
+        elif record.type == "other":
+            other_xml_path = record.location_href
+
+    # Parse the xml files
+    packages = {}
+
+    def pkgcb(pkg):
+        # Called when whole package entry in xml is parsed
+        packages[pkg.pkgId] = pkg
+
+    def newpkgcb(pkgId, name, arch):
+        # Called when new package entry is encountered
+        # And only opening <package> element is parsed
+        # This function has to return a package to which
+        # parsed data will be added or None if this package
+        # should be skiped.
+        return packages.get(pkgId, None)
+
+    cr.xml_parse_primary(os.path.join(REPO_PATH, primary_xml_path),
+                         pkgcb=pkgcb,
+                         do_files=0)
+
+    cr.xml_parse_filelists(os.path.join(REPO_PATH, filelists_xml_path),
+                            newpkgcb=newpkgcb)
+
+    for pkg in packages.itervalues():
+        print pkg, pkg.location_href
+
+
+if __name__ == "__main__":
+    print "First method:"
+    first_method()
+
+    print
+
+    print "Second method:"
+    second_method()
+