Script to reparse all hansard zip file contents

Scans the list of seen files and then picks out the latest one
and then re-parses that. Assumes that the files are ordered in
date order in the list.

pyscraper/reparse.py

@@ -0,0 +1,97 @@
+#! /usr/bin/env python
+
+import argparse
+import os
+import re
+from os.path import join
+
+from miscfuncs import toppath
+from new_hansard import ParseDay
+
+index_filename = join(toppath, 'seen_hansard_xml.txt')
+reparse_filename = join(toppath, 'reparse_hansard_xml.txt')
+zip_directory = join(toppath, 'cmpages', 'hansardzips')
+zip_dir_slash = "%s/" % zip_directory
+line_re = re.compile(r'^[^:]*:(.*/)([^/]*)$')
+files = {}
+
+parser = argparse.ArgumentParser(description='Process Hansard XML.')
+parser.add_argument('-v', '--verbose', action='count')
+ARGS = parser.parse_args()
+
+# make sure we only look at a file once
+class Entries(list):
+    def __init__(self):
+        entries = []
+        if os.path.exists(reparse_filename):
+            with open(reparse_filename) as f:
+                entries = [e.strip().replace(zip_dir_slash, '') for e in f.readlines()]
+        super(Entries, self).__init__(entries)
+
+    def dump(self):
+        with open(reparse_filename, 'w') as f:
+            f.writelines("{0}\n".format(entry) for entry in self)
+
+entries = Entries()
+
+
+def handle_file(filename, debate_type):
+    file_key = '{0}:{1}'.format(
+        debate_type,
+        filename.strip().replace(zip_dir_slash, '')
+    )
+    if file_key in entries:
+        if ARGS.verbose:
+            print "already seen {0}, not re-parsing again".format(filename)
+        return False
+
+    parser.reset()
+    if ARGS.verbose:
+        print "looking at {0}".format(filename)
+    ret = parser.handle_file(filename, debate_type, ARGS.verbose)
+
+    if ret == 'failed':
+        print "ERROR parsing {0} {1}".format(filename, debate_type)
+    elif ret == 'not-present':
+        print "Nothing to parse in {0} {1}".format(filename, debate_type)
+    elif ret == 'same':
+        print "parsed {0} {1}, no changes from {2}".format(
+            filename, debate_type, parser.prev_file
+        )
+    elif ret in ('change', 'new'):
+        print "parsed {0} {1} to {2}".format(
+            filename, debate_type, parser.output_file
+        )
+    else:
+        print "parsed {0} {1} to {2}, unknown return {3}".format(
+            filename, debate_type, parser.output_file, ret
+        )
+    entries.append(file_key)
+
+    return True
+
+with open(index_filename) as lines:
+    for line in lines:
+        matches = line_re.search(line.strip())
+        if matches:
+            files[matches.group(2)] = matches.group(1) + matches.group(2)
+
+parser = ParseDay()
+
+try:
+    for filename in files.values():
+        f = join(toppath, 'cmpages', 'hansardzips', filename)
+        if 'CHAN' in f:
+            handle_file(f, 'debate')
+            handle_file(f, 'westminhall')
+        elif 'LHAN' in f:
+            handle_file(f, 'lords')
+        elif 'PBC' in f:
+            handle_file(f, 'standing')
+
+# this is just to make sure we record progress
+except Exception:
+    entries.dump()
+    raise
+
+entries.dump()