renevoorburg / gzindexer

Creates an index of members of concatenated gzip files. Use it for quick and easy random file access.

gzindexer

Creates an index of the members of concatenated gzip files (cf. RFC 1952 ). Use it for quick and easy random file access.

Supply the file to be indexed as parameter, optionally provide an xpath expression to add keys to the index:

$ python3 gzindexer.py [-h] [-x XPATH] filename

This wil generate output similar to:

# infile.gz: [start] [bytes] [XPATH]
0 27677 id:1234
27677 676790 id:1235

The output can be used for quick random files access to specific members:

$ dd bs=1 skip={start} count={bytes} if=infile.gz | gzip -dc