hgext/hbisect.py
author mason@suse.com
Tue, 04 Apr 2006 16:38:43 -0400
changeset 2073 1e6745f78989
parent 1862 b41d71961aed
child 2305 e7de4dd43472
permissions -rw-r--r--
Implement data inlined with the index file This patch allows you to optionally inline data bytes with the revlog index file. It saves considerable space and checkout time by reducing the number of inodes, wasted partial blocks and system calls. To use the inline data add this to your .hgrc [revlog] # inline data only works with revlogng format=1 # inline is the only valid flag right now. flags=inline
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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# bisect extension for mercurial
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#
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# Copyright 2005, 2006 Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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# Inspired by git bisect, extension skeleton taken from mq.py.
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#
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# This software may be used and distributed according to the terms
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# of the GNU General Public License, incorporated herein by reference.
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from mercurial.demandload import demandload
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demandload(globals(), "os sys sets mercurial:hg,util")
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versionstr = "0.0.3"
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def lookup_rev(ui, repo, rev=None):
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    """returns rev or the checked-out revision if rev is None"""
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    if not rev is None:
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        return repo.lookup(rev)
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    parents = [p for p in repo.dirstate.parents() if p != hg.nullid]
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    if len(parents) != 1:
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        ui.warn("unexpected number of parents\n")
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        ui.warn("please commit or revert\n")
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        sys.exit(1)
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    return parents.pop()
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def check_clean(ui, repo):
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        modified, added, removed, deleted, unknown = repo.changes()
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        if modified or added or removed:
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            ui.warn("Repository is not clean, please commit or revert\n")
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            sys.exit(1)
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class bisect(object):
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    """dichotomic search in the DAG of changesets"""
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    def __init__(self, ui, repo):
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        self.repo = repo
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        self.path = repo.join("bisect")
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        self.opener = util.opener(self.path)
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        self.ui = ui
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        self.goodrevs = []
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        self.badrev = None
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        self.good_dirty = 0
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        self.bad_dirty = 0
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        self.good_path = "good"
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        self.bad_path = "bad"
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        if os.path.exists(os.path.join(self.path, self.good_path)):
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            self.goodrevs = self.opener(self.good_path).read().splitlines()
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            self.goodrevs = [hg.bin(x) for x in self.goodrevs]
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        if os.path.exists(os.path.join(self.path, self.bad_path)):
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            r = self.opener(self.bad_path).read().splitlines()
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            if r:
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                self.badrev = hg.bin(r.pop(0))
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    def __del__(self):
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        if not os.path.isdir(self.path):
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            return
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        f = self.opener(self.good_path, "w")
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        f.write("\n".join([hg.hex(r) for r in  self.goodrevs]))
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        if len(self.goodrevs) > 0:
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            f.write("\n")
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        f = self.opener(self.bad_path, "w")
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        if self.badrev:
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            f.write(hg.hex(self.badrev) + "\n")
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    def init(self):
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        """start a new bisection"""
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        if os.path.isdir(self.path):
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            self.ui.warn("bisect directory already exists\n")
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            return 1
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        os.mkdir(self.path)
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        check_clean(self.ui, self.repo)
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        return 0
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    def reset(self):
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        """finish a bisection"""
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        if os.path.isdir(self.path):
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            sl = [os.path.join(self.path, p)
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                  for p in [self.bad_path, self.good_path]]
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            for s in sl:
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                if os.path.exists(s):
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                    os.unlink(s)
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            os.rmdir(self.path)
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        # Not sure about this
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        #self.ui.write("Going back to tip\n")
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        #self.repo.update(self.repo.changelog.tip())
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        return 1
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    def num_ancestors(self, head=None, stop=None):
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        """
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        returns a dict with the mapping:
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        node -> number of ancestors (self included)
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        for all nodes who are ancestor of head and
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        not in stop.
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        """
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        if head is None:
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            head = self.badrev
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        return self.__ancestors_and_nb_ancestors(head, stop)[1]
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    def ancestors(self, head=None, stop=None):
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        """
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        returns the set of the ancestors of head (self included)
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        who are not in stop.
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        """
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        if head is None:
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            head = self.badrev
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        return self.__ancestors_and_nb_ancestors(head, stop)[0]
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    def __ancestors_and_nb_ancestors(self, head, stop=None):
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        """
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        if stop is None then ancestors of goodrevs are used as
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        lower limit.
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        returns (anc, n_child) where anc is the set of the ancestors of head
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        and n_child is a dictionary with the following mapping:
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        node -> number of ancestors (self included)
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        """
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        cl = self.repo.changelog
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        if not stop:
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            stop = sets.Set([])
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   119
            for i in xrange(len(self.goodrevs)-1, -1, -1):
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                g = self.goodrevs[i]
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   121
                if g in stop:
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   122
                    continue
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   123
                stop.update(cl.reachable(g))
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   124
        def num_children(a):
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   125
            """
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   126
            returns a dictionnary with the following mapping
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   127
            node -> [number of children, empty set]
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diff changeset
   128
            """
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   129
            d = {a: [0, sets.Set([])]}
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   130
            for i in xrange(cl.rev(a)+1):
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   131
                n = cl.node(i)
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   132
                if not d.has_key(n):
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diff changeset
   133
                    d[n] = [0, sets.Set([])]
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diff changeset
   134
                parents = [p for p in cl.parents(n) if p != hg.nullid]
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diff changeset
   135
                for p in parents:
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diff changeset
   136
                    d[p][0] += 1
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   137
            return d
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   138
1367
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   139
        if head in stop:
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   140
            self.ui.warn("Unconsistent state, %s is good and bad\n"
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   141
                          % hg.hex(head))
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   142
            sys.exit(1)
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diff changeset
   143
        n_child = num_children(head)
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   144
        for i in xrange(cl.rev(head)+1):
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   145
            n = cl.node(i)
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   146
            parents = [p for p in cl.parents(n) if p != hg.nullid]
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   147
            for p in parents:
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diff changeset
   148
                n_child[p][0] -= 1
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   149
                if not n in stop:
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   150
                    n_child[n][1].union_update(n_child[p][1])
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diff changeset
   151
                if n_child[p][0] == 0:
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   152
                    n_child[p] = len(n_child[p][1])
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   153
            if not n in stop:
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   154
                n_child[n][1].add(n)
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diff changeset
   155
            if n_child[n][0] == 0:
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diff changeset
   156
                if n == head:
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   157
                    anc = n_child[n][1]
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diff changeset
   158
                n_child[n] = len(n_child[n][1])
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diff changeset
   159
        return anc, n_child
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diff changeset
   160
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diff changeset
   161
    def next(self):
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   162
        if not self.badrev:
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diff changeset
   163
            self.ui.warn("You should give at least one bad\n")
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diff changeset
   164
            sys.exit(1)
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diff changeset
   165
        if not self.goodrevs:
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diff changeset
   166
            self.ui.warn("No good revision given\n")
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diff changeset
   167
            self.ui.warn("Assuming the first revision is good\n")
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0ba9dee8cfbd Fixed spacing/indentation, removed #! script header, added short description.
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diff changeset
   168
        ancestors, num_ancestors = self.__ancestors_and_nb_ancestors(
0ba9dee8cfbd Fixed spacing/indentation, removed #! script header, added short description.
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diff changeset
   169
                                    self.badrev)
1367
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diff changeset
   170
        tot = len(ancestors)
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diff changeset
   171
        if tot == 1:
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diff changeset
   172
            if ancestors.pop() != self.badrev:
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diff changeset
   173
                self.ui.warn("Could not find the first bad revision\n")
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parents:
diff changeset
   174
                sys.exit(1)
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parents:
diff changeset
   175
            self.ui.write(
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diff changeset
   176
                "The first bad revision is : %s\n" % hg.hex(self.badrev))
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diff changeset
   177
            sys.exit(0)
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diff changeset
   178
        self.ui.write("%d revisions left\n" % tot)
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diff changeset
   179
        best_rev = None
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diff changeset
   180
        best_len = -1
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diff changeset
   181
        for n in ancestors:
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diff changeset
   182
            l = num_ancestors[n]
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parents:
diff changeset
   183
            l = min(l, tot - l)
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parents:
diff changeset
   184
            if l > best_len:
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diff changeset
   185
                best_len = l
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parents:
diff changeset
   186
                best_rev = n
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parents:
diff changeset
   187
        return best_rev
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diff changeset
   188
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diff changeset
   189
    def autonext(self):
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diff changeset
   190
        """find and update to the next revision to test"""
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parents:
diff changeset
   191
        check_clean(self.ui, self.repo)
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parents:
diff changeset
   192
        rev = self.next()
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   193
        self.ui.write("Now testing %s\n" % hg.hex(rev))
1748
2428e6d66f06 bisect: fix for recent changes disallowing "false" merges
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parents: 1619
diff changeset
   194
        return self.repo.update(rev, force=True)
1367
a7678cbd7c28 bisect extension for mercurial
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parents:
diff changeset
   195
a7678cbd7c28 bisect extension for mercurial
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diff changeset
   196
    def good(self, rev):
a7678cbd7c28 bisect extension for mercurial
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diff changeset
   197
        self.goodrevs.append(rev)
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parents:
diff changeset
   198
a7678cbd7c28 bisect extension for mercurial
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parents:
diff changeset
   199
    def autogood(self, rev=None):
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diff changeset
   200
        """mark revision as good and update to the next revision to test"""
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parents:
diff changeset
   201
        check_clean(self.ui, self.repo)
a7678cbd7c28 bisect extension for mercurial
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parents:
diff changeset
   202
        rev = lookup_rev(self.ui, self.repo, rev)
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parents:
diff changeset
   203
        self.good(rev)
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parents:
diff changeset
   204
        if self.badrev:
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parents:
diff changeset
   205
            self.autonext()
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parents:
diff changeset
   206
a7678cbd7c28 bisect extension for mercurial
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parents:
diff changeset
   207
    def bad(self, rev):
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parents:
diff changeset
   208
        self.badrev = rev
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parents:
diff changeset
   209
a7678cbd7c28 bisect extension for mercurial
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parents:
diff changeset
   210
    def autobad(self, rev=None):
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parents:
diff changeset
   211
        """mark revision as bad and update to the next revision to test"""
a7678cbd7c28 bisect extension for mercurial
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parents:
diff changeset
   212
        check_clean(self.ui, self.repo)
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parents:
diff changeset
   213
        rev = lookup_rev(self.ui, self.repo, rev)
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parents:
diff changeset
   214
        self.bad(rev)
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parents:
diff changeset
   215
        if self.goodrevs:
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parents:
diff changeset
   216
            self.autonext()
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parents:
diff changeset
   217
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parents:
diff changeset
   218
# should we put it in the class ?
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parents:
diff changeset
   219
def test(ui, repo, rev):
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parents:
diff changeset
   220
    """test the bisection code"""
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   221
    b = bisect(ui, repo)
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parents:
diff changeset
   222
    rev = repo.lookup(rev)
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parents:
diff changeset
   223
    ui.write("testing with rev %s\n" % hg.hex(rev))
a7678cbd7c28 bisect extension for mercurial
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parents:
diff changeset
   224
    anc = b.ancestors()
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parents:
diff changeset
   225
    while len(anc) > 1:
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parents:
diff changeset
   226
        if not rev in anc:
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parents:
diff changeset
   227
            ui.warn("failure while bisecting\n")
a7678cbd7c28 bisect extension for mercurial
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parents:
diff changeset
   228
            sys.exit(1)
a7678cbd7c28 bisect extension for mercurial
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parents:
diff changeset
   229
        ui.write("it worked :)\n")
a7678cbd7c28 bisect extension for mercurial
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   230
        new_rev = b.next()
a7678cbd7c28 bisect extension for mercurial
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parents:
diff changeset
   231
        ui.write("choosing if good or bad\n")
a7678cbd7c28 bisect extension for mercurial
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   232
        if rev in b.ancestors(head=new_rev):
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parents:
diff changeset
   233
            b.bad(new_rev)
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parents:
diff changeset
   234
            ui.write("it is bad\n")
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parents:
diff changeset
   235
        else:
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parents:
diff changeset
   236
            b.good(new_rev)
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parents:
diff changeset
   237
            ui.write("it is good\n")
a7678cbd7c28 bisect extension for mercurial
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   238
        anc = b.ancestors()
1748
2428e6d66f06 bisect: fix for recent changes disallowing "false" merges
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1619
diff changeset
   239
        repo.update(new_rev, force=True)
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    for v in anc:
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        if v != rev:
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            ui.warn("fail to found cset! :(\n")
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            return 1
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    ui.write("Found bad cset: %s\n" % hg.hex(b.badrev))
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    ui.write("Everything is ok :)\n")
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    return 0
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def bisect_run(ui, repo, cmd=None, *args):
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    """bisect extension: dichotomic search in the DAG of changesets
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for subcommands see "hg bisect help\"
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    """
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    def help_(cmd=None, *args):
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        """show help for a given bisect subcommand or all subcommands"""
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        cmdtable = bisectcmdtable
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        if cmd:
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            doc = cmdtable[cmd][0].__doc__
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            synopsis = cmdtable[cmd][2]
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            ui.write(synopsis + "\n")
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            ui.write("\n" + doc + "\n")
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            return
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        ui.write("list of subcommands for the bisect extension\n\n")
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        cmds = cmdtable.keys()
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        cmds.sort()
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        m = max([len(c) for c in cmds])
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        for cmd in cmds:
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            doc = cmdtable[cmd][0].__doc__.splitlines(0)[0].rstrip()
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            ui.write(" %-*s   %s\n" % (m, cmd, doc))
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    b = bisect(ui, repo)
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    bisectcmdtable = {
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        "init": (b.init, 0, "hg bisect init"),
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        "bad": (b.autobad, 1, "hg bisect bad [<rev>]"),
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        "good": (b.autogood, 1, "hg bisect good [<rev>]"),
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        "next": (b.autonext, 0, "hg bisect next"),
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        "reset": (b.reset, 0, "hg bisect reset"),
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        "help": (help_, 1, "hg bisect help [<subcommand>]"),
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    }
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    if not bisectcmdtable.has_key(cmd):
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        ui.warn("bisect: Unknown sub-command\n")
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        return help_()
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    if len(args) > bisectcmdtable[cmd][1]:
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        ui.warn("bisect: Too many arguments\n")
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        return help_()
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    return bisectcmdtable[cmd][0](*args)
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cmdtable = {
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    "bisect": (bisect_run, [], "hg bisect [help|init|reset|next|good|bad]"),
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    #"bisect-test": (test, [], "hg bisect-test rev"),
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}