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- Committer: Wouter van Heyst
- Date: 2006-06-07 11:13:02 UTC
- mfrom: (1747 +trunk)
- mto: This revision was merged to the branch mainline in revision 1752.
- Revision ID: larstiq@larstiq.dyndns.org-20060607111302-bce5a90c86f0d764
[merge] bzr.dev 1747
- files modified:
- HACKING
added
removed
bzrlib/diff.py
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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import time
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from bzrlib.delta import compare_trees
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from bzrlib.errors import BzrError
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import bzrlib.errors as errors
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if sequence_matcher is None:
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sequence_matcher = bzrlib.patiencediff.PatienceSequenceMatcher
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ud = unified_diff(oldlines, newlines,
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fromfile=old_filename.encode(path_encoding)+'\t',
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tofile=new_filename.encode(path_encoding)+'\t',
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fromfile=old_filename.encode(path_encoding),
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tofile=new_filename.encode(path_encoding),
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sequencematcher=sequence_matcher)
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ud = list(ud)
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if not diff_opts:
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diff_opts = []
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diffcmd = ['diff',
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'--label', old_filename+'\t',
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'--label', old_filename,
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oldtmpf.name,
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'--label', new_filename+'\t',
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'--label', new_filename,
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newtmpf.name]
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# diff only allows one style to be specified; they don't override.
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specific_files, external_diff_options,
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old_label='a/', new_label='b/' ):
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DEVNULL = '/dev/null'
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# Windows users, don't panic about this filename -- it is a
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# special signal to GNU patch that the file should be created or
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# deleted respectively.
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# GNU Patch uses the epoch date to detect files that are being added
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# or removed in a diff.
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EPOCH_DATE = '1970-01-01 00:00:00 +0000'
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# TODO: Generation of pseudo-diffs for added/deleted files could
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# be usefully made into a much faster special case.
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for path, file_id, kind in delta.removed:
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has_changes = 1
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print >>to_file, '=== removed %s %r' % (kind, path.encode('utf8'))
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old_tree.inventory[file_id].diff(diff_file, old_label + path, old_tree,
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DEVNULL, None, None, to_file)
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old_name = '%s%s\t%s' % (old_label, path,
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_patch_header_date(old_tree, file_id, path))
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new_name = '%s%s\t%s' % (new_label, path, EPOCH_DATE)
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old_tree.inventory[file_id].diff(diff_file, old_name, old_tree,
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new_name, None, None, to_file)
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for path, file_id, kind in delta.added:
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has_changes = 1
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print >>to_file, '=== added %s %r' % (kind, path.encode('utf8'))
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new_tree.inventory[file_id].diff(diff_file, new_label + path, new_tree,
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DEVNULL, None, None, to_file,
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old_name = '%s%s\t%s' % (old_label, path, EPOCH_DATE)
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new_name = '%s%s\t%s' % (new_label, path,
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_patch_header_date(new_tree, file_id, path))
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new_tree.inventory[file_id].diff(diff_file, new_name, new_tree,
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old_name, None, None, to_file,
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reverse=True)
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for (old_path, new_path, file_id, kind,
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text_modified, meta_modified) in delta.renamed:
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print >>to_file, '=== renamed %s %r => %r%s' % (
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kind, old_path.encode('utf8'),
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new_path.encode('utf8'), prop_str)
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_maybe_diff_file_or_symlink(old_label, old_path, old_tree, file_id,
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new_label, new_path, new_tree,
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old_name = '%s%s\t%s' % (old_label, old_path,
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_patch_header_date(old_tree, file_id,
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old_path))
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new_name = '%s%s\t%s' % (new_label, new_path,
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_patch_header_date(new_tree, file_id,
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new_path))
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_maybe_diff_file_or_symlink(old_name, old_tree, file_id,
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new_name, new_tree,
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text_modified, kind, to_file, diff_file)
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for path, file_id, kind, text_modified, meta_modified in delta.modified:
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has_changes = 1
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prop_str = get_prop_change(meta_modified)
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print >>to_file, '=== modified %s %r%s' % (kind, path.encode('utf8'), prop_str)
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old_name = '%s%s\t%s' % (old_label, path,
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_patch_header_date(old_tree, file_id, path))
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new_name = '%s%s\t%s' % (new_label, path,
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_patch_header_date(new_tree, file_id, path))
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if text_modified:
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_maybe_diff_file_or_symlink(old_label, path, old_tree, file_id,
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new_label, path, new_tree,
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_maybe_diff_file_or_symlink(old_name, old_tree, file_id,
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new_name, new_tree,
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True, kind, to_file, diff_file)
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return has_changes
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def _patch_header_date(tree, file_id, path):
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"""Returns a timestamp suitable for use in a patch header."""
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tm = time.gmtime(tree.get_file_mtime(file_id, path))
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return time.strftime('%Y-%m-%d %H:%M:%S +0000', tm)
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def _raise_if_doubly_unversioned(specific_files, old_tree, new_tree):
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"""Complain if paths are not versioned in either tree."""
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if not specific_files:
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return ""
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def _maybe_diff_file_or_symlink(old_label, old_path, old_tree, file_id,
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new_label, new_path, new_tree, text_modified,
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def _maybe_diff_file_or_symlink(old_path, old_tree, file_id,
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new_path, new_tree, text_modified,
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kind, to_file, diff_file):
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if text_modified:
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new_entry = new_tree.inventory[file_id]
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old_tree.inventory[file_id].diff(diff_file,
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old_label + old_path, old_tree,
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new_label + new_path, new_entry,
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old_path, old_tree,
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new_path, new_entry,
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new_tree, to_file)
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