exewrapper: adapt for legacy HackableMercurial
We give up using CPython's PythonXX.lib import libraries (and Python.h), and
now "manually" call the LoadLibrary() / GetProcAddress() Windows API's instead.
If there is a "hg-python" subdirectory (the canonical directory name for
HackableMercurial's private Python copy) next to the hg.exe, we load the
pythonXX.dll from there (feeding an absolute path to LoadLibrary) and we set
Py_SetPythonHome() to that directory, so that the Python libraries are used
from there as well.
If there is no "hg-python" subdir found next to the hg.exe, we do not feed an
absolute path to LoadLibrary. This continues to allow to find a globally
installed Python DLL, as before this change - that is, without having to edit,
delete, rename, or configure anything.
Note that the hg.exe built is still bound to a *specific* major version of the
pythonXX.dll (e.g. python27.dll). What version it is, is inferred from the
version of the python interpreter that was used when calling setup.py. For
example
C:\python27_x86\python.exe setup.py build_hgexe -i --compiler=mingw32
builds a hg.exe (using the mingw32 tool chain) bound to (x86) Python 2.7. And
C:\python27_x86\python.exe setup.py build_hgexe -i
builds the same using the Microsoft C compiler/linker. (Note that the Microsoft
toolchain combined with x64 CPython can be used to build an x64 hg.exe.)
setup.py is changed to write the name of the pythonlib into the generated header
file "mercurial/hgpythonlib.h", which is #included by exewrapper.c. For a Python
2.7 build, it for example contains:
#define HGPYTHONLIB "python27"
exewrapper.c then uses HGPYTHONLIB for the name of the Python dll to load.
We don't want to track mercurial/hgpythonlib.h, so we add it to .hgignore.
# help.py - help data for mercurial
#
# Copyright 2006 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from i18n import gettext, _
import itertools, sys, os
import extensions, revset, fileset, templatekw, templatefilters, filemerge
import encoding, util, minirst
def listexts(header, exts, indent=1):
'''return a text listing of the given extensions'''
rst = []
if exts:
rst.append('\n%s\n\n' % header)
for name, desc in sorted(exts.iteritems()):
rst.append('%s:%s: %s\n' % (' ' * indent, name, desc))
return rst
def extshelp():
rst = loaddoc('extensions')().splitlines(True)
rst.extend(listexts(_('enabled extensions:'), extensions.enabled()))
rst.extend(listexts(_('disabled extensions:'), extensions.disabled()))
doc = ''.join(rst)
return doc
def optrst(options, verbose):
data = []
multioccur = False
for option in options:
if len(option) == 5:
shortopt, longopt, default, desc, optlabel = option
else:
shortopt, longopt, default, desc = option
optlabel = _("VALUE") # default label
if _("DEPRECATED") in desc and not verbose:
continue
so = ''
if shortopt:
so = '-' + shortopt
lo = '--' + longopt
if default:
desc += _(" (default: %s)") % default
if isinstance(default, list):
lo += " %s [+]" % optlabel
multioccur = True
elif (default is not None) and not isinstance(default, bool):
lo += " %s" % optlabel
data.append((so, lo, desc))
rst = minirst.maketable(data, 1)
if multioccur:
rst.append(_("\n[+] marked option can be specified multiple times\n"))
return ''.join(rst)
def topicmatch(kw):
"""Return help topics matching kw.
Returns {'section': [(name, summary), ...], ...} where section is
one of topics, commands, extensions, or extensioncommands.
"""
kw = encoding.lower(kw)
def lowercontains(container):
return kw in encoding.lower(container) # translated in helptable
results = {'topics': [],
'commands': [],
'extensions': [],
'extensioncommands': [],
}
for names, header, doc in helptable:
if (sum(map(lowercontains, names))
or lowercontains(header)
or lowercontains(doc())):
results['topics'].append((names[0], header))
import commands # avoid cycle
for cmd, entry in commands.table.iteritems():
if cmd.startswith('debug'):
continue
if len(entry) == 3:
summary = entry[2]
else:
summary = ''
# translate docs *before* searching there
docs = _(getattr(entry[0], '__doc__', None)) or ''
if kw in cmd or lowercontains(summary) or lowercontains(docs):
doclines = docs.splitlines()
if doclines:
summary = doclines[0]
cmdname = cmd.split('|')[0].lstrip('^')
results['commands'].append((cmdname, summary))
for name, docs in itertools.chain(
extensions.enabled().iteritems(),
extensions.disabled().iteritems()):
# extensions.load ignores the UI argument
mod = extensions.load(None, name, '')
if lowercontains(name) or lowercontains(docs):
# extension docs are already translated
results['extensions'].append((name, docs.splitlines()[0]))
for cmd, entry in getattr(mod, 'cmdtable', {}).iteritems():
if kw in cmd or (len(entry) > 2 and lowercontains(entry[2])):
cmdname = cmd.split('|')[0].lstrip('^')
if entry[0].__doc__:
cmddoc = gettext(entry[0].__doc__).splitlines()[0]
else:
cmddoc = _('(no help text available)')
results['extensioncommands'].append((cmdname, cmddoc))
return results
def loaddoc(topic):
"""Return a delayed loader for help/topic.txt."""
def loader():
if util.mainfrozen():
module = sys.executable
else:
module = __file__
base = os.path.dirname(module)
for dir in ('.', '..'):
docdir = os.path.join(base, dir, 'help')
if os.path.isdir(docdir):
break
path = os.path.join(docdir, topic + ".txt")
doc = gettext(util.readfile(path))
for rewriter in helphooks.get(topic, []):
doc = rewriter(topic, doc)
return doc
return loader
helptable = sorted([
(["config", "hgrc"], _("Configuration Files"), loaddoc('config')),
(["dates"], _("Date Formats"), loaddoc('dates')),
(["patterns"], _("File Name Patterns"), loaddoc('patterns')),
(['environment', 'env'], _('Environment Variables'),
loaddoc('environment')),
(['revisions', 'revs'], _('Specifying Single Revisions'),
loaddoc('revisions')),
(['multirevs', 'mrevs'], _('Specifying Multiple Revisions'),
loaddoc('multirevs')),
(['revsets', 'revset'], _("Specifying Revision Sets"), loaddoc('revsets')),
(['filesets', 'fileset'], _("Specifying File Sets"), loaddoc('filesets')),
(['diffs'], _('Diff Formats'), loaddoc('diffs')),
(['merge-tools', 'mergetools'], _('Merge Tools'), loaddoc('merge-tools')),
(['templating', 'templates', 'template', 'style'], _('Template Usage'),
loaddoc('templates')),
(['urls'], _('URL Paths'), loaddoc('urls')),
(["extensions"], _("Using Additional Features"), extshelp),
(["subrepos", "subrepo"], _("Subrepositories"), loaddoc('subrepos')),
(["hgweb"], _("Configuring hgweb"), loaddoc('hgweb')),
(["glossary"], _("Glossary"), loaddoc('glossary')),
(["hgignore", "ignore"], _("Syntax for Mercurial Ignore Files"),
loaddoc('hgignore')),
(["phases"], _("Working with Phases"), loaddoc('phases')),
])
# Map topics to lists of callable taking the current topic help and
# returning the updated version
helphooks = {}
def addtopichook(topic, rewriter):
helphooks.setdefault(topic, []).append(rewriter)
def makeitemsdoc(topic, doc, marker, items):
"""Extract docstring from the items key to function mapping, build a
.single documentation block and use it to overwrite the marker in doc
"""
entries = []
for name in sorted(items):
text = (items[name].__doc__ or '').rstrip()
if not text:
continue
text = gettext(text)
lines = text.splitlines()
doclines = [(lines[0])]
for l in lines[1:]:
# Stop once we find some Python doctest
if l.strip().startswith('>>>'):
break
doclines.append(' ' + l.strip())
entries.append('\n'.join(doclines))
entries = '\n\n'.join(entries)
return doc.replace(marker, entries)
def addtopicsymbols(topic, marker, symbols):
def add(topic, doc):
return makeitemsdoc(topic, doc, marker, symbols)
addtopichook(topic, add)
addtopicsymbols('filesets', '.. predicatesmarker', fileset.symbols)
addtopicsymbols('merge-tools', '.. internaltoolsmarker', filemerge.internals)
addtopicsymbols('revsets', '.. predicatesmarker', revset.symbols)
addtopicsymbols('templates', '.. keywordsmarker', templatekw.dockeywords)
addtopicsymbols('templates', '.. filtersmarker', templatefilters.filters)