#

# This is the mercurial setup script.

#

# 'python setup.py install', or

# 'python setup.py --help' for more options

import os

supportedpy = '~= 2.7'

if os.environ.get('HGALLOWPYTHON3', ''):

    # Mercurial will never work on Python 3 before 3.5 due to a lack

    # of % formatting on bytestrings, and can't work on 3.6.0 or 3.6.1

    # due to a bug in % formatting in bytestrings.

    # We cannot support Python 3.5.0, 3.5.1, 3.5.2 because of bug in

    # codecs.escape_encode() where it raises SystemError on empty bytestring

    # bug link: https://bugs.python.org/issue25270

    #

    # TODO: when we actually work on Python 3, use this string as the

    # actual supportedpy string.

    supportedpy = ','.join([

        '>=2.7',

        '!=3.0.*',

        '!=3.1.*',

        '!=3.2.*',

        '!=3.3.*',

        '!=3.4.*',

        '!=3.5.0',

        '!=3.5.1',

        '!=3.5.2',

        '!=3.6.0',

        '!=3.6.1',

    ])

import sys, platform

if sys.version_info[0] >= 3:

    printf = eval('print')

    libdir_escape = 'unicode_escape'

    def sysstr(s):

        return s.decode('latin-1')

else:

    libdir_escape = 'string_escape'

    def printf(*args, **kwargs):

        f = kwargs.get('file', sys.stdout)

        end = kwargs.get('end', '\n')

        f.write(b' '.join(args) + end)

    def sysstr(s):

        return s

# Attempt to guide users to a modern pip - this means that 2.6 users

# should have a chance of getting a 4.2 release, and when we ratchet

# the version requirement forward again hopefully everyone will get

# something that works for them.

if sys.version_info < (2, 7, 0, 'final'):

    pip_message = ('This may be due to an out of date pip. '

                   'Make sure you have pip >= 9.0.1.')

    try:

        import pip

        pip_version = tuple([int(x) for x in pip.__version__.split('.')[:3]])

        if pip_version < (9, 0, 1) :

            pip_message = (

                'Your pip version is out of date, please install '

                'pip >= 9.0.1. pip {} detected.'.format(pip.__version__))

        else:

            # pip is new enough - it must be something else

            pip_message = ''

    except Exception:

        pass

    error = """

Mercurial does not support Python older than 2.7.

Python {py} detected.

{pip}

""".format(py=sys.version_info, pip=pip_message)

    printf(error, file=sys.stderr)

    sys.exit(1)

# We don't yet officially support Python 3. But we want to allow developers to

# hack on. Detect and disallow running on Python 3 by default. But provide a

# backdoor to enable working on Python 3.

if sys.version_info[0] != 2:

    badpython = True

    # Allow Python 3 from source checkouts.

    if os.path.isdir('.hg') or 'HGPYTHON3' in os.environ:

        badpython = False

    if badpython:

        error = """

Mercurial only supports Python 2.7.

Python {py} detected.

Please re-run with Python 2.7.

""".format(py=sys.version_info)

        printf(error, file=sys.stderr)

        sys.exit(1)

# Solaris Python packaging brain damage

try:

    import hashlib

    sha = hashlib.sha1()

except ImportError:

    try:

        import sha

        sha.sha # silence unused import warning

    except ImportError:

        raise SystemExit(

            "Couldn't import standard hashlib (incomplete Python install).")

try:

    import zlib

    zlib.compressobj # silence unused import warning

except ImportError:

    raise SystemExit(

        "Couldn't import standard zlib (incomplete Python install).")

# The base IronPython distribution (as of 2.7.1) doesn't support bz2

isironpython = False

try:

    isironpython = (platform.python_implementation()

                    .lower().find("ironpython") != -1)

except AttributeError:

    pass

if isironpython:

    sys.stderr.write("warning: IronPython detected (no bz2 support)\n")

else:

    try:

        import bz2

        bz2.BZ2Compressor # silence unused import warning

    except ImportError:

        raise SystemExit(

            "Couldn't import standard bz2 (incomplete Python install).")

ispypy = "PyPy" in sys.version

hgrustext = os.environ.get('HGWITHRUSTEXT')

# TODO record it for proper rebuild upon changes

# (see mercurial/__modulepolicy__.py)

if hgrustext != 'cpython' and hgrustext is not None:

    hgrustext = 'direct-ffi'

import ctypes

import errno

import stat, subprocess, time

import re

import shutil

import tempfile

from distutils import log

# We have issues with setuptools on some platforms and builders. Until

# those are resolved, setuptools is opt-in except for platforms where

# we don't have issues.

issetuptools = (os.name == 'nt' or 'FORCE_SETUPTOOLS' in os.environ)

if issetuptools:

    from setuptools import setup

else:

    from distutils.core import setup

from distutils.ccompiler import new_compiler

from distutils.core import Command, Extension

from distutils.dist import Distribution

from distutils.command.build import build

from distutils.command.build_ext import build_ext

from distutils.command.build_py import build_py

from distutils.command.build_scripts import build_scripts

from distutils.command.install import install

from distutils.command.install_lib import install_lib

from distutils.command.install_scripts import install_scripts

from distutils.spawn import spawn, find_executable

from distutils import file_util

from distutils.errors import (

    CCompilerError,

    DistutilsError,

    DistutilsExecError,

)

from distutils.sysconfig import get_python_inc, get_config_var

from distutils.version import StrictVersion

# Explain to distutils.StrictVersion how our release candidates are versionned

StrictVersion.version_re = re.compile(r'^(\d+)\.(\d+)(\.(\d+))?-?(rc(\d+))?$')

def write_if_changed(path, content):

    """Write content to a file iff the content hasn't changed."""

    if os.path.exists(path):

        with open(path, 'rb') as fh:

            current = fh.read()

    else:

        current = b''

    if current != content:

        with open(path, 'wb') as fh:

            fh.write(content)

scripts = ['hg']

if os.name == 'nt':

    # We remove hg.bat if we are able to build hg.exe.

    scripts.append('contrib/win32/hg.bat')

def cancompile(cc, code):

    tmpdir = tempfile.mkdtemp(prefix='hg-install-')

    devnull = oldstderr = None

    try:

        fname = os.path.join(tmpdir, 'testcomp.c')

        f = open(fname, 'w')

        f.write(code)

        f.close()

        # Redirect stderr to /dev/null to hide any error messages

        # from the compiler.

        # This will have to be changed if we ever have to check

        # for a function on Windows.

        devnull = open('/dev/null', 'w')

        oldstderr = os.dup(sys.stderr.fileno())

        os.dup2(devnull.fileno(), sys.stderr.fileno())

        objects = cc.compile([fname], output_dir=tmpdir)

        cc.link_executable(objects, os.path.join(tmpdir, "a.out"))

        return True

    except Exception:

        return False

    finally:

        if oldstderr is not None:

            os.dup2(oldstderr, sys.stderr.fileno())

        if devnull is not None:

            devnull.close()

        shutil.rmtree(tmpdir)

# simplified version of distutils.ccompiler.CCompiler.has_function

# that actually removes its temporary files.

def hasfunction(cc, funcname):

    code = 'int main(void) { %s(); }\n' % funcname

    return cancompile(cc, code)

def hasheader(cc, headername):

    code = '#include <%s>\nint main(void) { return 0; }\n' % headername

    return cancompile(cc, code)

# py2exe needs to be installed to work

try:

    import py2exe

    py2exe.Distribution # silence unused import warning

    py2exeloaded = True

    # import py2exe's patched Distribution class

    from distutils.core import Distribution

except ImportError:

    py2exeloaded = False

def runcmd(cmd, env):

    p = subprocess.Popen(cmd, stdout=subprocess.PIPE,

                         stderr=subprocess.PIPE, env=env)

    out, err = p.communicate()

    return p.returncode, out, err

class hgcommand(object):

    def __init__(self, cmd, env):

        self.cmd = cmd

        self.env = env

    def run(self, args):

        cmd = self.cmd + args

        returncode, out, err = runcmd(cmd, self.env)

        err = filterhgerr(err)

        if err or returncode != 0:

            printf("stderr from '%s':" % (' '.join(cmd)), file=sys.stderr)

            printf(err, file=sys.stderr)

            return ''

        return out

def filterhgerr(err):

    # If root is executing setup.py, but the repository is owned by

    # another user (as in "sudo python setup.py install") we will get

    # trust warnings since the .hg/hgrc file is untrusted. That is

    # fine, we don't want to load it anyway.  Python may warn about

    # a missing __init__.py in mercurial/locale, we also ignore that.

    err = [e for e in err.splitlines()

           if (not e.startswith(b'not trusting file')

               and not e.startswith(b'warning: Not importing')

               and not e.startswith(b'obsolete feature not enabled')

               and not e.startswith(b'*** failed to import extension')

               and not e.startswith(b'devel-warn:')

               and not (e.startswith(b'(third party extension')

                        and e.endswith(b'or newer of Mercurial; disabling)')))]

    return b'\n'.join(b'  ' + e for e in err)

def findhg():

    """Try to figure out how we should invoke hg for examining the local

    repository contents.

    Returns an hgcommand object."""

    # By default, prefer the "hg" command in the user's path.  This was

    # presumably the hg command that the user used to create this repository.

    #

    # This repository may require extensions or other settings that would not

    # be enabled by running the hg script directly from this local repository.

    hgenv = os.environ.copy()

    # Use HGPLAIN to disable hgrc settings that would change output formatting,

    # and disable localization for the same reasons.

    hgenv['HGPLAIN'] = '1'

    hgenv['LANGUAGE'] = 'C'

    hgcmd = ['hg']

    # Run a simple "hg log" command just to see if using hg from the user's

    check_cmd = ['log', '-r.', '-Ttest']

    # Fall back to trying the local hg installation.

    hgenv = localhgenv()

    hgcmd = [sys.executable, 'hg']

    try:

        retcode, out, err = runcmd(hgcmd + check_cmd, hgenv)

    except EnvironmentError:

        retcode = -1

    if retcode == 0 and not filterhgerr(err):

        return hgcommand(hgcmd, hgenv)

    raise SystemExit('Unable to find a working hg binary to extract the '

                     'version from the repository tags')

def localhgenv():

    """Get an environment dictionary to use for invoking or importing

    mercurial from the local repository."""

    # Execute hg out of this directory with a custom environment which takes

    # care to not use any hgrc files and do no localization.

    env = {'HGMODULEPOLICY': 'py',

           'HGRCPATH': '',

           'LANGUAGE': 'C',

           'PATH': ''} # make pypi modules that use os.environ['PATH'] happy

    if 'LD_LIBRARY_PATH' in os.environ:

        env['LD_LIBRARY_PATH'] = os.environ['LD_LIBRARY_PATH']

    if 'SystemRoot' in os.environ:

        # SystemRoot is required by Windows to load various DLLs.  See:

        # https://bugs.python.org/issue13524#msg148850

        env['SystemRoot'] = os.environ['SystemRoot']

    return env

version = ''

if os.path.isdir('.hg'):

    hg = findhg()

    cmd = ['log', '-r', '.', '--template', '{tags}\n']

    numerictags = [t for t in sysstr(hg.run(cmd)).split() if t[0:1].isdigit()]

    hgid = sysstr(hg.run(['id', '-i'])).strip()

    if not hgid:

        # Bail out if hg is having problems interacting with this repository,

        # rather than falling through and producing a bogus version number.

        # Continuing with an invalid version number will break extensions

        # that define minimumhgversion.

        raise SystemExit('Unable to determine hg version from local repository')

    if numerictags: # tag(s) found

        version = numerictags[-1]

        if hgid.endswith('+'): # propagate the dirty status to the tag

            version += '+'

    else: # no tag found

        ltagcmd = ['parents', '--template', '{latesttag}']

        ltag = sysstr(hg.run(ltagcmd))

        changessincecmd = ['log', '-T', 'x\n', '-r', "only(.,'%s')" % ltag]

        changessince = len(hg.run(changessincecmd).splitlines())

        version = '%s+%s-%s' % (ltag, changessince, hgid)

    if version.endswith('+'):

        version += time.strftime('%Y%m%d')

elif os.path.exists('.hg_archival.txt'):

    kw = dict([[t.strip() for t in l.split(':', 1)]

               for l in open('.hg_archival.txt')])

    if 'tag' in kw:

        version = kw['tag']

    elif 'latesttag' in kw:

        if 'changessincelatesttag' in kw:

            version = '%(latesttag)s+%(changessincelatesttag)s-%(node).12s' % kw

        else:

            version = '%(latesttag)s+%(latesttagdistance)s-%(node).12s' % kw

    else:

        version = kw.get('node', '')[:12]

if version:

    versionb = version

    if not isinstance(versionb, bytes):