49 lines
1.5 KiB
Python
Executable File
49 lines
1.5 KiB
Python
Executable File
#!/usr/bin/env PYTHONUNBUFFERED=1 python2
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#
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# Created by Bjarni R. Einarsson, placed in the public domain. Go wild!
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#
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import json
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import os
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import sys
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try:
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dirtydb_input = sys.argv[1]
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dirtydb_output = '%s.new' % dirtydb_input
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assert(os.path.exists(dirtydb_input))
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assert(not os.path.exists(dirtydb_output))
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except:
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print
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print 'Usage: %s /path/to/dirty.db' % sys.argv[0]
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print
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print 'Note: Will create a file named dirty.db.new in the same folder,'
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print ' please make sure permissions are OK and a file by that'
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print ' name does not exist already. This script works by omitting'
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print ' duplicate lines from the dirty.db file, keeping only the'
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print ' last (latest) instance. No revision data should be lost,'
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print ' but be careful, make backups. If it breaks you get to keep'
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print ' both pieces!'
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print
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sys.exit(1)
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dirtydb = {}
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lines = 0
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with open(dirtydb_input, 'r') as fd:
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print 'Reading %s' % dirtydb_input
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for line in fd:
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lines += 1
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try:
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data = json.loads(line)
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dirtydb[data['key']] = line
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except:
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print("Skipping invalid JSON!")
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if lines % 10000 == 0:
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sys.stderr.write('.')
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print
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print 'OK, found %d unique keys in %d lines' % (len(dirtydb), lines)
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with open(dirtydb_output, 'w') as fd:
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for data in dirtydb.values():
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fd.write(data)
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print 'Wrote data to %s. All done!' % dirtydb_output
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