148 lines
5.2 KiB
Python
Executable File
148 lines
5.2 KiB
Python
Executable File
#!/usr/bin/python
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"""
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Automatic dependency generator for Node.js libraries.
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Parsed from package.json. See `man npm-json` for details.
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"""
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# Copyright 2012 T.C. Hollingsworth <tchollingsworth@gmail.com>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to
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# deal in the Software without restriction, including without limitation the
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# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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# sell copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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from __future__ import unicode_literals
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import json
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import re
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import sys
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RE_VERSION = re.compile(r'\s*v?([<>=~]{0,2})\s*([0-9][0-9\.\-]*)\s*')
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def main():
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#npm2rpm uses functions here to write BuildRequires so don't print anything
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#until the very end
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deps = []
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#it's highly unlikely that we'll ever get more than one file but we handle
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#this like all RPM automatic dependency generation scripts anyway
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paths = [path.rstrip() for path in sys.stdin.readlines()]
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for path in paths:
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if path.endswith('package.json'):
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fh = open(path)
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metadata = json.load(fh)
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fh.close()
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#write out the node.js interpreter dependency
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req = 'nodejs(engine)'
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if 'engines' in metadata and 'node' in metadata['engines']:
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deps += process_dep(req, metadata['engines']['node'])
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else:
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print req
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if 'dependencies' in metadata:
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for name, version in metadata['dependencies'].iteritems():
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req = 'npm(' + name + ')'
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deps += process_dep(req, version)
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print '\n'.join(deps)
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def process_dep(req, version):
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"""Converts an individual npm dependency into RPM dependencies"""
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deps = []
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#there's no way RPM can do anything like an OR dependency
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if '||' in version:
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sys.stderr.write("WARNING: The {0} dependency contains an ".format(req) +
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"OR (||) dependency: '{0}.\nPlease manually include ".format(version) +
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"a versioned dependency in your spec file if necessary")
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deps.append(req)
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elif ' - ' in version:
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gt, lt = version.split(' - ')
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deps.append(req + ' >= ' + gt)
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deps.append(req + ' <= ' + lt)
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else:
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m = re.match(RE_VERSION, version)
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if m:
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deps += convert_dep(req, m.group(1), m.group(2))
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#There could be up to two versions here (e.g.">1.0 <3.1")
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if len(version) > m.end():
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m = re.match(RE_VERSION, version[m.end():])
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if m:
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deps += convert_dep(req, m.group(1), m.group(2))
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else:
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deps.append(req)
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return deps
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def convert_dep(req, operator, version):
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"""Converts one of the two possibly listed versions into an RPM dependency"""
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deps = []
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#any version will do
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if not version or version == '*':
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deps.append(req)
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#any prefix but ~ makes things dead simple
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elif operator in ['>', '<', '<=', '>=', '=']:
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deps.append(' '.join([req, operator, version]))
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#oh boy, here we go...
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else:
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#split the dotted portions into a list (handling trailing dots properly)
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parts = [part if part else 'x' for part in version.split('.')]
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parts = [int(part) if part != 'x' and not '-' in part
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else part for part in parts]
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# 1 or 1.x or 1.x.x or ~1
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if len(parts) == 1 or parts[1] == 'x':
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deps.append('{0} >= {1}'.format(req, parts[0]))
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deps.append('{0} < {1}'.format(req, parts[0]+1))
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# 1.2.3 or 1.2.3-4 or 1.2.x or ~1.2.3 or 1.2
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elif len(parts) == 3 or operator != '~':
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# 1.2.x or 1.2
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if len(parts) == 2 or parts[2] == 'x':
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deps.append('{0} >= {1}.{2}'.format(req, parts[0], parts[1]))
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deps.append('{0} < {1}.{2}'.format(req, parts[0], parts[1]+1))
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# ~1.2.3
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elif operator == '~':
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deps.append('{0} >= {1}'.format(req, version))
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deps.append('{0} < {1}.{2}'.format(req, parts[0], parts[1]+1))
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# 1.2.3 or 1.2.3-4
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else:
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deps.append('{0} = {1}'.format(req, version))
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# ~1.2
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else:
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deps.append('{0} >= {1}'.format(req, version))
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deps.append('{0} < {1}'.format(req, parts[0]+1))
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return deps
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if __name__ == '__main__':
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main()
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