view hgext/fsmonitor/pywatchman/capabilities.py @ 37775:03d7f885d5f2

revsetlang: do not pass in non-bytes to parse()

Since parse() isn't a simple function, we shouldn't expect it would raise
TypeError or ValueError for invalid inputs. Before, TypeError was raised
at 'if pos != len(spec)', which was quite late to report an error.

This patch also makes tokenize() detect invalid object before converting
it to a py3-safe bytes.

Spotted while adding the 'revset(...)' hack to _parsewith().

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from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
# no unicode literals

import re

def parse_version(vstr):
    res = 0
    for n in vstr.split('.'):
        res = res * 1000
        res = res + int(n)
    return res

cap_versions = {
    "cmd-watch-del-all": "3.1.1",
    "cmd-watch-project": "3.1",
    "relative_root": "3.3",
    "term-dirname": "3.1",
    "term-idirname": "3.1",
    "wildmatch": "3.7",
}

def check(version, name):
    if name in cap_versions:
        return version >= parse_version(cap_versions[name])
    return False

def synthesize(vers, opts):
    """ Synthesize a capability enabled version response
        This is a very limited emulation for relatively recent feature sets
    """
    parsed_version = parse_version(vers['version'])
    vers['capabilities'] = {}
    for name in opts['optional']:
        vers['capabilities'][name] = check(parsed_version, name)
    failed = False
    for name in opts['required']:
        have = check(parsed_version, name)
        vers['capabilities'][name] = have
        if not have:
            vers['error'] = 'client required capability `' + name + \
                            '` is not supported by this server'
    return vers