comparison mercurial/changelog.py @ 42407:602469a91550

context: get filesadded() and filesremoved() from changeset if configured

This adds the read side for getting the sets of added and removed
files from the changeset extras. I timed this command on the hg repo:

  hg log -T '{rev}\n {files}\n %:{file_mods}\n +{file_adds}\n -{file_dels}\n'

It took 1m21s before and 6.4s after. I also used that command to check
that the result didn't change compared to calculating the values from
the manifests on the fly (it didn't change).

In the mozilla-unified repo, the same command run on
FIREFOX_BETA_58_END::FIREFOX_BETA_59_END went from 29s to 0.67s.

Differential Revision: https://phab.mercurial-scm.org/D6417

42406:f385ba70e4af

    for i, f in enumerate(files):
        if f in subset:
            indices.append('%d' % i)
    return '\0'.join(indices)

def stripdesc(desc):
    """strip trailing whitespace and leading and trailing empty lines"""
    return '\n'.join([l.rstrip() for l in desc.splitlines()]).strip('\n')

class appender(object):

    extra = attr.ib()
    manifest = attr.ib(default=nullid)
    user = attr.ib(default='')
    date = attr.ib(default=(0, 0))
    files = attr.ib(default=attr.Factory(list))
    p1copies = attr.ib(default=None)
    p2copies = attr.ib(default=None)
    description = attr.ib(default='')

class changelogrevision(object):

        off = self._offsets
        if off[2] == off[3]:
            return []

        return self._text[off[2] + 1:off[3]].split('\n')

    @property
    def p1copies(self):
        rawcopies = self.extra.get('p1copies')
        return rawcopies and decodecopies(rawcopies)

42407:602469a91550

    for i, f in enumerate(files):
        if f in subset:
            indices.append('%d' % i)
    return '\0'.join(indices)

def decodefileindices(files, data):
    try:
        subset = []
        for strindex in data.split('\0'):
            i = int(strindex)
            if i < 0 or i >= len(files):
                return None
            subset.append(files[i])
        return subset
    except (ValueError, IndexError):
        # Perhaps someone had chosen the same key name (e.g. "added") and
        # used different syntax for the value.
        return None

def stripdesc(desc):
    """strip trailing whitespace and leading and trailing empty lines"""
    return '\n'.join([l.rstrip() for l in desc.splitlines()]).strip('\n')

class appender(object):

    extra = attr.ib()
    manifest = attr.ib(default=nullid)
    user = attr.ib(default='')
    date = attr.ib(default=(0, 0))
    files = attr.ib(default=attr.Factory(list))
    filesadded = attr.ib(default=None)
    filesremoved = attr.ib(default=None)
    p1copies = attr.ib(default=None)
    p2copies = attr.ib(default=None)
    description = attr.ib(default='')

class changelogrevision(object):

        off = self._offsets
        if off[2] == off[3]:
            return []

        return self._text[off[2] + 1:off[3]].split('\n')

    @property
    def filesadded(self):
        rawindices = self.extra.get('filesadded')
        return rawindices and decodefileindices(self.files, rawindices)

    @property
    def filesremoved(self):
        rawindices = self.extra.get('filesremoved')
        return rawindices and decodefileindices(self.files, rawindices)

    @property
    def p1copies(self):
        rawcopies = self.extra.get('p1copies')
        return rawcopies and decodecopies(rawcopies)