view tests/test-hgwebdir-paths.py @ 50400:95acba2c29f6

encoding: avoid quadratic time complexity when json-encoding non-UTF8 strings

Apparently the code uses "+=" with a bytes object, which is linear-time, so the
whole encoding is quadratic-time. This patch makes us use a bytearray object,
instead, which has a(n amortized-)constant-time append operation.

The encoding is still not particularly fast, but at least a 10MB file
takes tens of seconds, not many hours to encode.

import os
from mercurial import (
    hg,
    ui as uimod,
)
from mercurial.hgweb import hgwebdir_mod

hgwebdir = hgwebdir_mod.hgwebdir

os.mkdir(b'webdir')
os.chdir(b'webdir')

webdir = os.path.realpath(b'.')

u = uimod.ui.load()
hg.repository(u, b'a', create=1)
hg.repository(u, b'b', create=1)
os.chdir(b'b')
hg.repository(u, b'd', create=1)
os.chdir(b'..')
hg.repository(u, b'c', create=1)
os.chdir(b'..')

paths = {
    b't/a/': b'%s/a' % webdir,
    b'b': b'%s/b' % webdir,
    b'coll': b'%s/*' % webdir,
    b'rcoll': b'%s/**' % webdir,
}

config = os.path.join(webdir, b'hgwebdir.conf')
configfile = open(config, 'wb')
configfile.write(b'[paths]\n')
for k, v in paths.items():
    configfile.write(b'%s = %s\n' % (k, v))
configfile.close()

confwd = hgwebdir(config)
dictwd = hgwebdir(paths)

assert len(confwd.repos) == len(dictwd.repos), 'different numbers'
assert len(confwd.repos) == 9, 'expected 9 repos, found %d' % len(confwd.repos)

found = dict(confwd.repos)
for key, path in dictwd.repos:
    assert key in found, 'repository %s was not found' % key
    assert found[key] == path, 'different paths for repo %s' % key