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1 # Copyright 2015 Facebook, Inc. |
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2 # All rights reserved. |
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3 # |
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4 # Redistribution and use in source and binary forms, with or without |
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5 # modification, are permitted provided that the following conditions are met: |
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6 # |
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7 # * Redistributions of source code must retain the above copyright notice, |
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8 # this list of conditions and the following disclaimer. |
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9 # |
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10 # * Redistributions in binary form must reproduce the above copyright notice, |
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11 # this list of conditions and the following disclaimer in the documentation |
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12 # and/or other materials provided with the distribution. |
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13 # |
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14 # * Neither the name Facebook nor the names of its contributors may be used to |
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15 # endorse or promote products derived from this software without specific |
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16 # prior written permission. |
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17 # |
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18 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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19 # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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20 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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21 # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
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22 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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23 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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24 # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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25 # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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26 # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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27 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 |
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29 import re |
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30 |
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31 def parse_version(vstr): |
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32 res = 0 |
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33 for n in vstr.split('.'): |
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34 res = res * 1000 |
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35 res = res + int(n) |
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36 return res |
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37 |
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38 cap_versions = { |
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39 "cmd-watch-del-all": "3.1.1", |
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40 "cmd-watch-project": "3.1", |
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41 "relative_root": "3.3", |
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42 "term-dirname": "3.1", |
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43 "term-idirname": "3.1", |
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44 "wildmatch": "3.7", |
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45 } |
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46 |
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47 def check(version, name): |
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48 if name in cap_versions: |
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49 return version >= parse_version(cap_versions[name]) |
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50 return False |
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51 |
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52 def synthesize(vers, opts): |
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53 """ Synthesize a capability enabled version response |
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54 This is a very limited emulation for relatively recent feature sets |
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55 """ |
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56 parsed_version = parse_version(vers['version']) |
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57 vers['capabilities'] = {} |
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58 for name in opts['optional']: |
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59 vers['capabilities'][name] = check(parsed_version, name) |
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60 failed = False |
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61 for name in opts['required']: |
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62 have = check(parsed_version, name) |
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63 vers['capabilities'][name] = have |
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64 if not have: |
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65 vers['error'] = 'client required capability `' + name + \ |
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66 '` is not supported by this server' |
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67 return vers |
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68 |
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69 # no-check-code -- this is a 3rd party library |