346
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extra_trees=extra_trees)
352
def _get_trees_to_diff(path_list, revision_specs, old_url, new_url):
353
"""Get the trees and specific files to diff given a list of paths.
355
This method works out the trees to be diff'ed and the files of
356
interest within those trees.
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the list of arguments passed to the diff command
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:param revision_specs:
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Zero, one or two RevisionSpecs from the diff command line,
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saying what revisions to compare.
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The url of the old branch or tree. If None, the tree to use is
365
taken from the first path, if any, or the current working tree.
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The url of the new branch or tree. If None, the tree to use is
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taken from the first path, if any, or the current working tree.
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a tuple of (old_tree, new_tree, specific_files, extra_trees) where
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extra_trees is a sequence of additional trees to search in for
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# Get the old and new revision specs
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old_revision_spec = None
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new_revision_spec = None
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if revision_specs is not None:
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if len(revision_specs) > 0:
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old_revision_spec = revision_specs[0]
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old_url = old_revision_spec.get_branch()
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if len(revision_specs) > 1:
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new_revision_spec = revision_specs[1]
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new_url = new_revision_spec.get_branch()
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make_paths_wt_relative = True
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if path_list is None or len(path_list) == 0:
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# If no path is given, assume the current directory
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default_location = u'.'
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elif old_url is not None and new_url is not None:
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other_paths = path_list
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make_paths_wt_relative = False
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default_location = path_list[0]
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other_paths = path_list[1:]
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# Get the old location
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old_url = default_location
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working_tree, branch, relpath = \
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bzrdir.BzrDir.open_containing_tree_or_branch(old_url)
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specific_files.append(relpath)
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old_tree = _get_tree_to_diff(old_revision_spec, working_tree, branch)
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# Get the new location
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new_url = default_location
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if new_url != old_url:
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working_tree, branch, relpath = \
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bzrdir.BzrDir.open_containing_tree_or_branch(new_url)
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specific_files.append(relpath)
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new_tree = _get_tree_to_diff(new_revision_spec, working_tree, branch,
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basis_is_default=working_tree is None)
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# Get the specific files (all files is None, no files is [])
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if make_paths_wt_relative and working_tree is not None:
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other_paths = _relative_paths_in_tree(working_tree, other_paths)
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specific_files.extend(other_paths)
424
if len(specific_files) == 0:
425
specific_files = None
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# Get extra trees that ought to be searched for file-ids
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if working_tree is not None and working_tree not in (old_tree, new_tree):
430
extra_trees = (working_tree,)
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return old_tree, new_tree, specific_files, extra_trees
434
def _get_tree_to_diff(spec, tree=None, branch=None, basis_is_default=True):
435
if branch is None and tree is not None:
437
if spec is None or spec.spec is None:
440
return tree.basis_tree()
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return branch.basis_tree()
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revision = spec.in_store(branch)
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revision_id = revision.rev_id
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rev_branch = revision.branch
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return rev_branch.repository.revision_tree(revision_id)
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def _relative_paths_in_tree(tree, paths):
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"""Get the relative paths within a working tree.
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Each path may be either an absolute path or a path relative to the
455
current working directory.
458
for filename in paths:
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result.append(tree.relpath(osutils.dereference_path(filename)))
461
except errors.PathNotChild:
462
raise errors.BzrCommandError("Files are in different branches")
349
466
def show_diff_trees(old_tree, new_tree, to_file, specific_files=None,
350
467
external_diff_options=None,
351
468
old_label='a/', new_label='b/',
added
removed
bzrlib/diff.py
