view mercurial/subrepo.py @ 10092:f1bf64abcb1b stable

doc/Makefile: Fix rst2html detection

Displaying the output from the failing call to "which" didn't prevent
make from doing stupid things later. We now only search for "rst2html"
and fallback to "rst2html.py". If neither name is found, make will
eventually abort when we try to use $(RST2HTML).

# subrepo.py - sub-repository handling for Mercurial
#
# Copyright 2006, 2007 Matt Mackall <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2, incorporated herein by reference.

import errno, os
from i18n import _
import config, util, node, error
hg = None

nullstate = ('', '')

def state(ctx):
    p = config.config()
    def read(f, sections=None, remap=None):
        if f in ctx:
            try:
                p.parse(f, ctx[f].data(), sections, remap)
            except IOError, err:
                if err.errno != errno.ENOENT:
                    raise
    read('.hgsub')

    rev = {}
    if '.hgsubstate' in ctx:
        try:
            for l in ctx['.hgsubstate'].data().splitlines():
                revision, path = l.split(" ", 1)
                rev[path] = revision
        except IOError, err:
            if err.errno != errno.ENOENT:
                raise

    state = {}
    for path, src in p[''].items():
        state[path] = (src, rev.get(path, ''))

    return state

def writestate(repo, state):
    repo.wwrite('.hgsubstate',
                ''.join(['%s %s\n' % (state[s][1], s)
                         for s in sorted(state)]), '')

def submerge(repo, wctx, mctx, actx):
    if mctx == actx: # backwards?
        actx = wctx.p1()
    s1 = wctx.substate
    s2 = mctx.substate
    sa = actx.substate
    sm = {}

    repo.ui.debug("subrepo merge %s %s %s\n" % (wctx, mctx, actx))

    def debug(s, msg, r=""):
        if r:
            r = "%s:%s" % r
        repo.ui.debug("  subrepo %s: %s %s\n" % (s, msg, r))

    for s, l in s1.items():
        if wctx != actx and wctx.sub(s).dirty():
            l = (l[0], l[1] + "+")
        a = sa.get(s, nullstate)
        if s in s2:
            r = s2[s]
            if l == r or r == a: # no change or local is newer
                sm[s] = l
                continue
            elif l == a: # other side changed
                debug(s, "other changed, get", r)
                wctx.sub(s).get(r)
                sm[s] = r
            elif l[0] != r[0]: # sources differ
                if repo.ui.promptchoice(
                    _(' subrepository sources for %s differ\n'
                      'use (l)ocal source (%s) or (r)emote source (%s)?')
                      % (s, l[0], r[0]),
                      (_('&Local'), _('&Remote')), 0):
                    debug(s, "prompt changed, get", r)
                    wctx.sub(s).get(r)
                    sm[s] = r
            elif l[1] == a[1]: # local side is unchanged
                debug(s, "other side changed, get", r)
                wctx.sub(s).get(r)
                sm[s] = r
            else:
                debug(s, "both sides changed, merge with", r)
                wctx.sub(s).merge(r)
                sm[s] = l
        elif l == a: # remote removed, local unchanged
            debug(s, "remote removed, remove")
            wctx.sub(s).remove()
        else:
            if repo.ui.promptchoice(
                _(' local changed subrepository %s which remote removed\n'
                  'use (c)hanged version or (d)elete?') % s,
                (_('&Changed'), _('&Delete')), 0):
                debug(s, "prompt remove")
                wctx.sub(s).remove()

    for s, r in s2.items():
        if s in s1:
            continue
        elif s not in sa:
            debug(s, "remote added, get", r)
            wctx.sub(s).get(r)
            sm[s] = r
        elif r != sa[s]:
            if repo.ui.promptchoice(
                _(' remote changed subrepository %s which local removed\n'
                  'use (c)hanged version or (d)elete?') % s,
                (_('&Changed'), _('&Delete')), 0) == 0:
                debug(s, "prompt recreate", r)
                wctx.sub(s).get(r)
                sm[s] = r

    # record merged .hgsubstate
    writestate(repo, sm)

def _abssource(repo, push=False):
    if hasattr(repo, '_subparent'):
        source = repo._subsource
        if source.startswith('/') or '://' in source:
            return source
        parent = _abssource(repo._subparent)
        if '://' in parent:
            if parent[-1] == '/':
                parent = parent[:-1]
            return parent + '/' + source
        return os.path.join(parent, repo._subsource)
    if push and repo.ui.config('paths', 'default-push'):
        return repo.ui.config('paths', 'default-push', repo.root)
    return repo.ui.config('paths', 'default', repo.root)

def subrepo(ctx, path):
    # subrepo inherently violates our import layering rules
    # because it wants to make repo objects from deep inside the stack
    # so we manually delay the circular imports to not break
    # scripts that don't use our demand-loading
    global hg
    import hg as h
    hg = h

    util.path_auditor(ctx._repo.root)(path)
    state = ctx.substate.get(path, nullstate)
    if state[0].startswith('['): # future expansion
        raise error.Abort('unknown subrepo source %s' % state[0])
    return hgsubrepo(ctx, path, state)

class hgsubrepo(object):
    def __init__(self, ctx, path, state):
        self._path = path
        self._state = state
        r = ctx._repo
        root = r.wjoin(path)
        if os.path.exists(os.path.join(root, '.hg')):
            self._repo = hg.repository(r.ui, root)
        else:
            util.makedirs(root)
            self._repo = hg.repository(r.ui, root, create=True)
            f = file(os.path.join(root, '.hg', 'hgrc'), 'w')
            f.write('[paths]\ndefault = %s\n' % state[0])
            f.close()
        self._repo._subparent = r
        self._repo._subsource = state[0]

    def dirty(self):
        r = self._state[1]
        if r == '':
            return True
        w = self._repo[None]
        if w.p1() != self._repo[r]: # version checked out changed
            return True
        return w.dirty() # working directory changed

    def commit(self, text, user, date):
        self._repo.ui.debug("committing subrepo %s\n" % self._path)
        n = self._repo.commit(text, user, date)
        if not n:
            return self._repo['.'].hex() # different version checked out
        return node.hex(n)

    def remove(self):
        # we can't fully delete the repository as it may contain
        # local-only history
        self._repo.ui.note(_('removing subrepo %s\n') % self._path)
        hg.clean(self._repo, node.nullid, False)

    def _get(self, state):
        source, revision = state
        try:
            self._repo.lookup(revision)
        except error.RepoError:
            self._repo._subsource = source
            self._repo.ui.status(_('pulling subrepo %s\n') % self._path)
            srcurl = _abssource(self._repo)
            other = hg.repository(self._repo.ui, srcurl)
            self._repo.pull(other)

    def get(self, state):
        self._get(state)
        source, revision = state
        self._repo.ui.debug("getting subrepo %s\n" % self._path)
        hg.clean(self._repo, revision, False)

    def merge(self, state):
        self._get(state)
        cur = self._repo['.']
        dst = self._repo[state[1]]
        if dst.ancestor(cur) == cur:
            self._repo.ui.debug("updating subrepo %s\n" % self._path)
            hg.update(self._repo, state[1])
        else:
            self._repo.ui.debug("merging subrepo %s\n" % self._path)
            hg.merge(self._repo, state[1], remind=False)

    def push(self, force):
        # push subrepos depth-first for coherent ordering
        c = self._repo['']
        subs = c.substate # only repos that are committed
        for s in sorted(subs):
            c.sub(s).push(force)

        self._repo.ui.status(_('pushing subrepo %s\n') % self._path)
        dsturl = _abssource(self._repo, True)
        other = hg.repository(self._repo.ui, dsturl)
        self._repo.push(other, force)