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# Copyright 2015 Facebook, Inc.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# * Neither the name Facebook nor the names of its contributors may be used to
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# endorse or promote products derived from this software without specific
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# prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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def parse_version(vstr):
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res = 0
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for n in vstr.split("."):
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res = res * 1000
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res = res + int(n)
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return res
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cap_versions = {
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"cmd-watch-del-all": "3.1.1",
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"cmd-watch-project": "3.1",
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"relative_root": "3.3",
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"term-dirname": "3.1",
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"term-idirname": "3.1",
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"wildmatch": "3.7",
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}
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def check(version, name):
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if name in cap_versions:
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return version >= parse_version(cap_versions[name])
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return False
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def synthesize(vers, opts):
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"""Synthesize a capability enabled version response
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This is a very limited emulation for relatively recent feature sets
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"""
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parsed_version = parse_version(vers["version"])
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vers["capabilities"] = {}
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for name in opts["optional"]:
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vers["capabilities"][name] = check(parsed_version, name)
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for name in opts["required"]:
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have = check(parsed_version, name)
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vers["capabilities"][name] = have
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if not have:
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vers["error"] = (
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"client required capability `"
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+ name
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+ "` is not supported by this server"
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)
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return vers
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