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@ -1,26 +1,35 @@
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#!/usr/bin/python3
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"""
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Usage: snap-seed-parse ${chroot_dir} > somefile.manifest
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Usage: snap-seed-parse [${chroot_dir}] <output file>
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This script looks for a seed.yaml path in the given root directory, parsing
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it and printing generated manifest lines to stdout for easy redirection.
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it and appending the parsed lines to the given output file.
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The $chroot_dir argument is optional and will default to the empty string.
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"""
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import argparse
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import os.path
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import re
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import sys
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import yaml
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import os.path
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def log(msg):
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sys.stderr.write("snap-seed-parse: {}\n".format(msg))
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print("snap-seed-parse: {}".format(msg))
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log("Parsing seed.yaml")
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CHROOT_ROOT = sys.argv[1] if len(sys.argv) > 1 and len(sys.argv[1]) > 0 \
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else ''
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parser = argparse.ArgumentParser()
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parser.add_argument('chroot', nargs='?', default='',
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help='root dir for the chroot from which to generate the '
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'manifest')
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parser.add_argument('file', help='Output manifest to this file')
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ARGS = parser.parse_args()
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CHROOT_ROOT = ARGS.chroot
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FNAME = ARGS.file
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# Trim any trailing slashes for correct appending
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log("CHROOT_ROOT: {}".format(CHROOT_ROOT))
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@ -43,14 +52,17 @@ else:
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with open(YAML_PATH, 'r') as fh:
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yaml_lines = yaml.safe_load(fh)['snaps']
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# Loop over dict items, outputting one manifest line from each triplet
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for item in yaml_lines:
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filestring = item['file']
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# Pull the revision number off the file name
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revision = filestring[filestring.rindex('_')+1:]
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revision = re.sub(r'[^0-9]', '', revision)
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print("{}{}\t{}\t{}".format(LINE_PREFIX,
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item['name'],
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item['channel'],
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revision,
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))
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log('Writing manifest to {}'.format(FNAME))
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with open(FNAME, 'a+') as fh:
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for item in yaml_lines:
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filestring = item['file']
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# Pull the revision number off the file name
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revision = filestring[filestring.rindex('_')+1:]
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revision = re.sub(r'[^0-9]', '', revision)
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fh.write("{}{}\t{}\t{}\n".format(LINE_PREFIX,
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item['name'],
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item['channel'],
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revision,
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))
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log('Manifest output finished.')
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CloudBuilder
6 years ago