comparison mercurial/metadata.py @ 45666:f6811e5bd994

changing-files: add clean computation of changed files for roots

The `files` field is not reliable, so we need to compute things from scratch. We
start with the simplest case root changesets. In the beginning they was nothing,
then user said "let there be files" and there were added files.

Differential Revision: https://phab.mercurial-scm.org/D9126

45665:308ca5528ee6

            self.mark_copied_from_p2(source, dest)


def compute_all_files_changes(ctx):
    """compute the files changed by a revision"""
    filescopies = computechangesetcopies(ctx)
    filesadded = computechangesetfilesadded(ctx)
    filesremoved = computechangesetfilesremoved(ctx)
    filesmerged = computechangesetfilesmerged(ctx)
    files = ChangingFiles()

    files.update_removed(filesremoved)
    files.update_merged(filesmerged)
    files.update_copies_from_p1(filescopies[0])
    files.update_copies_from_p2(filescopies[1])
    return files


def computechangesetfilesadded(ctx):
    """return the list of files added in a changeset
    """

45666:f6811e5bd994

            self.mark_copied_from_p2(source, dest)


def compute_all_files_changes(ctx):
    """compute the files changed by a revision"""
    p1 = ctx.p1()
    p2 = ctx.p2()
    if p1.rev() == node.nullrev and p2.rev() == node.nullrev:
        return _process_root(ctx)
    filescopies = computechangesetcopies(ctx)
    filesadded = computechangesetfilesadded(ctx)
    filesremoved = computechangesetfilesremoved(ctx)
    filesmerged = computechangesetfilesmerged(ctx)
    files = ChangingFiles()

    files.update_removed(filesremoved)
    files.update_merged(filesmerged)
    files.update_copies_from_p1(filescopies[0])
    files.update_copies_from_p2(filescopies[1])
    return files


def _process_root(ctx):
    """compute the appropriate changed files for a changeset with no parents
    """
    # Simple, there was nothing before it, so everything is added.
    md = ChangingFiles()
    manifest = ctx.manifest()
    for filename in manifest:
        md.mark_added(filename)
    return md


def computechangesetfilesadded(ctx):
    """return the list of files added in a changeset
    """