comparison mercurial/commands.py @ 11337:0f3c8a47960e

debugbuilddag: build a changelog dag from a concise description

Useful in tests to quickly build a complex DAG in an empty repo.
Handles local tags and named branches.
Options to, at each rev,
 - create a new file,
 - overwrite the same file,
 - append to the same file,
 - write to a specific line in a mergeable file.
Can run shell commands during DAG buildup.

11336:3dfbe26cfded

        lookup = repo.lookup
    else:
        raise util.Abort(_('either two or three arguments required'))
    a = r.ancestor(lookup(rev1), lookup(rev2))
    ui.write("%d:%s\n" % (r.rev(a), hex(a)))

def debugcommands(ui, cmd='', *args):
    """list all available commands and options"""
    for cmd, vals in sorted(table.iteritems()):
        cmd = cmd.split('|')[0].strip('^')

          ('f', 'force', None,
           _('forcibly copy over an existing managed file')),
         ] + walkopts + dryrunopts,
         _('[OPTION]... [SOURCE]... DEST')),
    "debugancestor": (debugancestor, [], _('[INDEX] REV1 REV2')),
    "debugcheckstate": (debugcheckstate, [], ''),
    "debugcommands": (debugcommands, [], _('[COMMAND]')),
    "debugcomplete":
        (debugcomplete,
         [('o', 'options', None, _('show the command options'))],

11337:0f3c8a47960e

        lookup = repo.lookup
    else:
        raise util.Abort(_('either two or three arguments required'))
    a = r.ancestor(lookup(rev1), lookup(rev2))
    ui.write("%d:%s\n" % (r.rev(a), hex(a)))

def debugbuilddag(ui, repo, text,
                  mergeable_file=False,
                  appended_file=False,
                  overwritten_file=False,
                  new_file=False):
    """builds a repo with a given dag from scratch in the current empty repo

    Elements:

     - "+n" is a linear run of n nodes based on the current default parent
     - "." is a single node based on the current default parent
     - "$" resets the default parent to null (implied at the start);
           otherwise the default parent is always the last node created
     - "<p" sets the default parent to the backref p
     - "*p" is a fork at parent p, which is a backref
     - "*p1/p2" is a merge of parents p1 and p2, which are backrefs
     - "/p2" is a merge of the preceding node and p2
     - ":tag" defines a local tag for the preceding node
     - "@branch" sets the named branch for subsequent nodes
     - "!command" runs the command using your shell
     - "!!my command\\n" is like "!", but to the end of the line
     - "#...\\n" is a comment up to the end of the line

    Whitespace between the above elements is ignored.

    A backref is either

     - a number n, which references the node curr-n, where curr is the current
       node, or
     - the name of a local tag you placed earlier using ":tag", or
     - empty to denote the default parent.

    All string valued-elements are either strictly alphanumeric, or must
    be enclosed in double quotes ("..."), with "\" as escape character.

    Note that the --overwritten-file and --appended-file options imply the
    use of "HGMERGE=internal:local" during DAG buildup.
    """

    if not (mergeable_file or appended_file or overwritten_file or new_file):
        raise Exception(_('need at least one of -m, -a, -o, -n'))

    if len(repo.changelog) > 0:
        raise Exception(_('repository is not empty'))

    if overwritten_file or appended_file:
        # we don't want to fail in merges during buildup
        os.environ['HGMERGE'] = 'internal:local'

    def writefile(fname, text, fmode="w"):
        f = open(fname, fmode)
        try:
            f.write(text)
        finally:
            f.close()

    if mergeable_file:
        linesperrev = 2
        # determine number of revs in DAG
        n = 0
        for type, data in dagparser.parsedag(text):
            if type == 'n':
                n += 1
        # make a file with k lines per rev
        writefile("mf", "\n".join(str(i) for i in xrange(0, n * linesperrev))
                  + "\n")

    at = -1
    atbranch = 'default'
    for type, data in dagparser.parsedag(text):
        if type == 'n':
            ui.status('node %s\n' % format(data))
            id, ps = data
            p1 = ps[0]
            if p1 != at:
                update(ui, repo, node=p1, clean=True)
                at = p1
            if repo.dirstate.branch() != atbranch:
                branch(ui, repo, atbranch, force=True)
            if len(ps) > 1:
                p2 = ps[1]
                merge(ui, repo, node=p2)

            if mergeable_file:
                f = open("mf", "r+")
                try:
                    lines = f.read().split("\n")
                    lines[id * linesperrev] += " r%i" % id
                    f.seek(0)
                    f.write("\n".join(lines))
                finally:
                    f.close()

            if appended_file:
                writefile("af", "r%i\n" % id, "a")

            if overwritten_file:
                writefile("of", "r%i\n" % id)

            if new_file:
                writefile("nf%i" % id, "r%i\n" % id)

            commit(ui, repo, addremove=True, message="r%i" % id, date=(id, 0))
            at = id
        elif type == 'l':
            id, name = data
            ui.status('tag %s\n' % name)
            tag(ui, repo, name, local=True)
        elif type == 'a':
            ui.status('branch %s\n' % data)
            atbranch = data
        elif type in 'cC':
            r = util.system(data, cwd=repo.root)
            if r:
                desc, r = util.explain_exit(r)
                raise util.Abort(_('%s command %s') % (data, desc))

def debugcommands(ui, cmd='', *args):
    """list all available commands and options"""
    for cmd, vals in sorted(table.iteritems()):
        cmd = cmd.split('|')[0].strip('^')

          ('f', 'force', None,
           _('forcibly copy over an existing managed file')),
         ] + walkopts + dryrunopts,
         _('[OPTION]... [SOURCE]... DEST')),
    "debugancestor": (debugancestor, [], _('[INDEX] REV1 REV2')),
    "debugbuilddag":
        (debugbuilddag,
         [('m', 'mergeable-file', None, _('add single file mergeable changes')),
          ('a', 'appended-file', None, _('add single file all revs append to')),
          ('o', 'overwritten-file', None, _('add single file all revs overwrite')),
          ('n', 'new-file', None, _('add new file at each rev')),
         ],
         _('[OPTION]... TEXT')),
    "debugcheckstate": (debugcheckstate, [], ''),
    "debugcommands": (debugcommands, [], _('[COMMAND]')),
    "debugcomplete":
        (debugcomplete,
         [('o', 'options', None, _('show the command options'))],