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- Committer: Martin Pool
- Date: 2005-06-24 07:06:38 UTC
- Revision ID: mbp@sourcefrog.net-20050624070638-4b1230afde50b1a8
- files are only reported as modified if their name or parent has changed,
not if their parent is renamed
not if their parent is renamed
- files added:
- .rsyncexclude
- bzrlib/selftest
- contrib
- contrib/bash
- contrib/zsh
- elementtree
- patches
- plugins
- plugins/changeset
- urlgrabber
- files removed:
- bzrlib/tests.py
- files modified:
- .bzrignore
added
removed
bzrlib/inventory.py
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#! /usr/bin/env python
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# -*- coding: UTF-8 -*-
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# (C) 2005 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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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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"""Inventories map files to their name in a revision."""
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__copyright__ = "Copyright (C) 2005 Canonical Ltd."
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__author__ = "Martin Pool <mbp@canonical.com>"
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import sys, os.path, types
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from sets import Set
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# This should really be an id randomly assigned when the tree is
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# created, but it's not for now.
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ROOT_ID = "TREE_ROOT"
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import sys, os.path, types, re
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try:
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from cElementTree import Element, ElementTree, SubElement
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except ImportError:
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from elementtree.ElementTree import Element, ElementTree, SubElement
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from xml import XMLMixin
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from errors import bailout
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from osutils import uuid, quotefn, splitpath, joinpath, appendpath
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from trace import mutter
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from bzrlib.xml import XMLMixin
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from bzrlib.errors import BzrError, BzrCheckError
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import bzrlib
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from bzrlib.osutils import uuid, quotefn, splitpath, joinpath, appendpath
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from bzrlib.trace import mutter
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class InventoryEntry(XMLMixin):
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"""Description of a versioned file.
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>>> i = Inventory()
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>>> i.path2id('')
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>>> i.add(InventoryEntry('123', 'src', kind='directory'))
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>>> i.add(InventoryEntry('2323', 'hello.c', parent_id='123'))
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'TREE_ROOT'
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>>> i.add(InventoryEntry('123', 'src', 'directory', ROOT_ID))
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>>> i.add(InventoryEntry('2323', 'hello.c', 'file', parent_id='123'))
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>>> for j in i.iter_entries():
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... print j
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...
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('src', InventoryEntry('123', 'src', kind='directory', parent_id=None))
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('src', InventoryEntry('123', 'src', kind='directory', parent_id='TREE_ROOT'))
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('src/hello.c', InventoryEntry('2323', 'hello.c', kind='file', parent_id='123'))
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>>> i.add(InventoryEntry('2323', 'bye.c', parent_id='123'))
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>>> i.add(InventoryEntry('2323', 'bye.c', 'file', '123'))
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Traceback (most recent call last):
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...
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BzrError: ('inventory already contains entry with id {2323}', [])
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>>> i.add(InventoryEntry('2324', 'bye.c', parent_id='123'))
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>>> i.add(InventoryEntry('2325', 'wibble', parent_id='123', kind='directory'))
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BzrError: inventory already contains entry with id {2323}
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>>> i.add(InventoryEntry('2324', 'bye.c', 'file', '123'))
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>>> i.add(InventoryEntry('2325', 'wibble', 'directory', '123'))
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>>> i.path2id('src/wibble')
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'2325'
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>>> '2325' in i
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True
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>>> i.add(InventoryEntry('2326', 'wibble.c', parent_id='2325'))
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>>> i.add(InventoryEntry('2326', 'wibble.c', 'file', '2325'))
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>>> i['2326']
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InventoryEntry('2326', 'wibble.c', kind='file', parent_id='2325')
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>>> for j in i.iter_entries():
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>>> i.id2path('2326')
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'src/wibble/wibble.c'
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:todo: Maybe also keep the full path of the entry, and the children?
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TODO: Maybe also keep the full path of the entry, and the children?
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But those depend on its position within a particular inventory, and
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it would be nice not to need to hold the backpointer here.
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"""
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def __init__(self, file_id, name, kind='file', text_id=None,
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parent_id=None):
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# TODO: split InventoryEntry into subclasses for files,
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# directories, etc etc.
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text_sha1 = None
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text_size = None
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def __init__(self, file_id, name, kind, parent_id, text_id=None):
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"""Create an InventoryEntry
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The filename must be a single component, relative to the
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parent directory; it cannot be a whole path or relative name.
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>>> e = InventoryEntry('123', 'hello.c')
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>>> e = InventoryEntry('123', 'hello.c', 'file', ROOT_ID)
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>>> e.name
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'hello.c'
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>>> e.file_id
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'123'
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>>> e = InventoryEntry('123', 'src/hello.c')
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>>> e = InventoryEntry('123', 'src/hello.c', 'file', ROOT_ID)
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Traceback (most recent call last):
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BzrError: ("InventoryEntry name is not a simple filename: 'src/hello.c'", [])
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BzrCheckError: InventoryEntry name 'src/hello.c' is invalid
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"""
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if len(splitpath(name)) != 1:
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bailout('InventoryEntry name is not a simple filename: %r'
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% name)
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if '/' in name or '\\' in name:
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raise BzrCheckError('InventoryEntry name %r is invalid' % name)
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self.file_id = file_id
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self.name = name
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assert kind in ['file', 'directory']
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self.kind = kind
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self.text_id = text_id
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self.parent_id = parent_id
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self.text_sha1 = None
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self.text_size = None
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if kind == 'directory':
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self.children = {}
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elif kind == 'file':
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pass
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else:
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raise BzrError("unhandled entry kind %r" % kind)
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def sorted_children(self):
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l = self.children.items()
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l.sort()
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return l
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def copy(self):
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other = InventoryEntry(self.file_id, self.name, self.kind,
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self.text_id, self.parent_id)
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self.parent_id, text_id=self.text_id)
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other.text_sha1 = self.text_sha1
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other.text_size = self.text_size
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# note that children are *not* copied; they're pulled across when
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# others are added
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return other
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e.set('file_id', self.file_id)
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e.set('kind', self.kind)
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if self.text_size is not None:
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if self.text_size != None:
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e.set('text_size', '%d' % self.text_size)
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for f in ['text_id', 'text_sha1', 'parent_id']:
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for f in ['text_id', 'text_sha1']:
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v = getattr(self, f)
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if v is not None:
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if v != None:
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e.set(f, v)
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# to be conservative, we don't externalize the root pointers
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# for now, leaving them as null in the xml form. in a future
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# version it will be implied by nested elements.
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if self.parent_id != ROOT_ID:
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assert isinstance(self.parent_id, basestring)
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e.set('parent_id', self.parent_id)
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e.tail = '\n'
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return e
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def from_element(cls, elt):
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assert elt.tag == 'entry'
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self = cls(elt.get('file_id'), elt.get('name'), elt.get('kind'))
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## original format inventories don't have a parent_id for
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## nodes in the root directory, but it's cleaner to use one
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## internally.
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parent_id = elt.get('parent_id')
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if parent_id == None:
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parent_id = ROOT_ID
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self = cls(elt.get('file_id'), elt.get('name'), elt.get('kind'), parent_id)
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self.text_id = elt.get('text_id')
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self.text_sha1 = elt.get('text_sha1')
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self.parent_id = elt.get('parent_id')
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## mutter("read inventoryentry: %r" % (elt.attrib))
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from_element = classmethod(from_element)
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def __cmp__(self, other):
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if self is other:
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return 0
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def __eq__(self, other):
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if not isinstance(other, InventoryEntry):
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return NotImplemented
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return cmp(self.file_id, other.file_id) \
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or cmp(self.name, other.name) \
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or cmp(self.text_sha1, other.text_sha1) \
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or cmp(self.text_size, other.text_size) \
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or cmp(self.text_id, other.text_id) \
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or cmp(self.parent_id, other.parent_id) \
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or cmp(self.kind, other.kind)
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return (self.file_id == other.file_id) \
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and (self.name == other.name) \
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and (self.text_sha1 == other.text_sha1) \
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and (self.text_size == other.text_size) \
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and (self.text_id == other.text_id) \
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and (self.parent_id == other.parent_id) \
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and (self.kind == other.kind)
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def __ne__(self, other):
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return not (self == other)
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def __hash__(self):
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raise ValueError('not hashable')
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class RootEntry(InventoryEntry):
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def __init__(self, file_id):
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self.file_id = file_id
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self.children = {}
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self.kind = 'root_directory'
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self.parent_id = None
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self.name = ''
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def __eq__(self, other):
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if not isinstance(other, RootEntry):
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return NotImplemented
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return (self.file_id == other.file_id) \
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and (self.children == other.children)
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class Inventory(XMLMixin):
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"""Inventory of versioned files in a tree.
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An Inventory acts like a set of InventoryEntry items. You can
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also look files up by their file_id or name.
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May be read from and written to a metadata file in a tree. To
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manipulate the inventory (for example to add a file), it is read
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in, modified, and then written back out.
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This describes which file_id is present at each point in the tree,
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and possibly the SHA-1 or other information about the file.
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Entries can be looked up either by path or by file_id.
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The inventory represents a typical unix file tree, with
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directories containing files and subdirectories. We never store
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returned quickly.
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InventoryEntry objects must not be modified after they are
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inserted.
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inserted, other than through the Inventory API.
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>>> inv = Inventory()
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>>> inv.write_xml(sys.stdout)
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<inventory>
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</inventory>
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>>> inv.add(InventoryEntry('123-123', 'hello.c'))
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>>> inv.add(InventoryEntry('123-123', 'hello.c', 'file', ROOT_ID))
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>>> inv['123-123'].name
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'hello.c'
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>>> for file_id in inv: print file_id
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...
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123-123
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May be treated as an iterator or set to look up file ids:
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</inventory>
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"""
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## TODO: Clear up handling of files in subdirectories; we probably
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## do want to be able to just look them up by name but this
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## probably means gradually walking down the path, looking up as we go.
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## TODO: Make sure only canonical filenames are stored.
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## TODO: Do something sensible about the possible collisions on
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## case-losing filesystems. Perhaps we should just always forbid
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## such collisions.
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## _tree should probably just be stored as
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## InventoryEntry._children on each directory.
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def __init__(self):
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"""Create or read an inventory.
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If a working directory is specified, the inventory is read
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from there. If the file is specified, read from that. If not,
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the inventory is created empty.
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The inventory is created with a default root directory, with
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an id of None.
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"""
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self._byid = dict()
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# _tree is indexed by parent_id; at each level a map from name
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# to ie. The None entry is the root.
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self._tree = {None: {}}
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self.root = RootEntry(ROOT_ID)
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self._byid = {self.root.file_id: self.root}
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def __iter__(self):
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return len(self._byid)
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def iter_entries(self, parent_id=None):
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def iter_entries(self, from_dir=None):
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"""Return (path, entry) pairs, in order by name."""
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kids = self._tree[parent_id].items()
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if from_dir == None:
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assert self.root
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from_dir = self.root
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elif isinstance(from_dir, basestring):
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from_dir = self._byid[from_dir]
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kids = from_dir.children.items()
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kids.sort()
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for name, ie in kids:
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yield name, ie
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if ie.kind == 'directory':
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for cn, cie in self.iter_entries(parent_id=ie.file_id):
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yield joinpath([name, cn]), cie
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def directories(self, include_root=True):
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"""Return (path, entry) pairs for all directories.
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"""
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if include_root:
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yield '', None
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for path, entry in self.iter_entries():
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if entry.kind == 'directory':
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yield path, entry
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for cn, cie in self.iter_entries(from_dir=ie.file_id):
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yield os.path.join(name, cn), cie
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def entries(self):
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"""Return list of (path, ie) for all entries except the root.
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This may be faster than iter_entries.
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"""
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accum = []
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def descend(dir_ie, dir_path):
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kids = dir_ie.children.items()
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kids.sort()
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for name, ie in kids:
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child_path = os.path.join(dir_path, name)
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accum.append((child_path, ie))
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if ie.kind == 'directory':
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descend(ie, child_path)
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descend(self.root, '')
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return accum
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def directories(self):
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"""Return (path, entry) pairs for all directories, including the root.
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"""
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accum = []
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def descend(parent_ie, parent_path):
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accum.append((parent_path, parent_ie))
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kids = [(ie.name, ie) for ie in parent_ie.children.itervalues() if ie.kind == 'directory']
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kids.sort()
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for name, child_ie in kids:
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child_path = os.path.join(parent_path, name)
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descend(child_ie, child_path)
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descend(self.root, '')
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return accum
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def children(self, parent_id):
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"""Return entries that are direct children of parent_id."""
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return self._tree[parent_id]
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# TODO: return all paths and entries
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def __contains__(self, file_id):
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"""True if this entry contains a file with given id.
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>>> inv = Inventory()
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>>> inv.add(InventoryEntry('123', 'foo.c'))
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>>> inv.add(InventoryEntry('123', 'foo.c', 'file', ROOT_ID))
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>>> '123' in inv
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True
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>>> '456' in inv
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385
"""Return the entry for given file_id.
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>>> inv = Inventory()
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>>> inv.add(InventoryEntry('123123', 'hello.c'))
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>>> inv.add(InventoryEntry('123123', 'hello.c', 'file', ROOT_ID))
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>>> inv['123123'].name
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'hello.c'
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"""
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return self._byid[file_id]
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try:
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return self._byid[file_id]
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except KeyError:
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if file_id == None:
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raise BzrError("can't look up file_id None")
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else:
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raise BzrError("file_id {%s} not in inventory" % file_id)
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def get_file_kind(self, file_id):
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return self._byid[file_id].kind
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def get_child(self, parent_id, filename):
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return self[parent_id].children.get(filename)
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def add(self, entry):
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411
To add a file to a branch ready to be committed, use Branch.add,
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which calls this."""
344
if entry.file_id in self:
345
bailout("inventory already contains entry with id {%s}" % entry.file_id)
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if entry.parent_id != None:
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if entry.parent_id not in self:
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bailout("parent_id %s of new entry not found in inventory"
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% entry.parent_id)
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if self._tree[entry.parent_id].has_key(entry.name):
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bailout("%s is already versioned"
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% appendpath(self.id2path(entry.parent_id), entry.name))
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if entry.file_id in self._byid:
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raise BzrError("inventory already contains entry with id {%s}" % entry.file_id)
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try:
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parent = self._byid[entry.parent_id]
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except KeyError:
419
raise BzrError("parent_id {%s} not in inventory" % entry.parent_id)
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if parent.children.has_key(entry.name):
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raise BzrError("%s is already versioned" %
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appendpath(self.id2path(parent.file_id), entry.name))
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self._byid[entry.file_id] = entry
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self._tree[entry.parent_id][entry.name] = entry
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if entry.kind == 'directory':
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self._tree[entry.file_id] = {}
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parent.children[entry.name] = entry
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def add_path(self, relpath, kind, file_id=None):
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"""Add entry from a path.
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The immediate parent must already be versioned"""
433
from bzrlib.errors import NotVersionedError
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parts = bzrlib.osutils.splitpath(relpath)
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if len(parts) == 0:
437
raise BzrError("cannot re-add root of inventory")
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if file_id == None:
440
file_id = bzrlib.branch.gen_file_id(relpath)
441
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parent_path = parts[:-1]
443
parent_id = self.path2id(parent_path)
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if parent_id == None:
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raise NotVersionedError(parent_path)
446
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ie = InventoryEntry(file_id, parts[-1],
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kind=kind, parent_id=parent_id)
449
return self.add(ie)
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450
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def __delitem__(self, file_id):
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453
"""Remove entry by id.
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>>> inv = Inventory()
367
>>> inv.add(InventoryEntry('123', 'foo.c'))
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>>> inv.add(InventoryEntry('123', 'foo.c', 'file', ROOT_ID))
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457
>>> '123' in inv
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True
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>>> del inv['123']
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462
"""
374
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ie = self[file_id]
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assert self._tree[ie.parent_id][ie.name] == ie
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assert self[ie.parent_id].children[ie.name] == ie
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466
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# TODO: Test deleting all children; maybe hoist to a separate
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# deltree method?
380
469
if ie.kind == 'directory':
381
for cie in self._tree[file_id].values():
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for cie in ie.children.values():
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del self[cie.file_id]
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del self._tree[file_id]
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del ie.children
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473
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del self._byid[file_id]
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del self._tree[ie.parent_id][ie.name]
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def id_set(self):
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return Set(self._byid)
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del self[ie.parent_id].children[ie.name]
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476
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def to_element(self):
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"""Construct from XML Element
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>>> inv = Inventory()
406
>>> inv.add(InventoryEntry('foo.c-123981239', 'foo.c'))
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>>> inv.add(InventoryEntry('foo.c-123981239', 'foo.c', 'file', ROOT_ID))
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>>> elt = inv.to_element()
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>>> inv2 = Inventory.from_element(elt)
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>>> inv2 == inv
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from_element = classmethod(from_element)
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504
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421
def __cmp__(self, other):
506
def __eq__(self, other):
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"""Compare two sets by comparing their contents.
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508
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509
>>> i1 = Inventory()
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510
>>> i2 = Inventory()
426
511
>>> i1 == i2
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512
True
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>>> i1.add(InventoryEntry('123', 'foo'))
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>>> i1.add(InventoryEntry('123', 'foo', 'file', ROOT_ID))
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>>> i1 == i2
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False
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>>> i2.add(InventoryEntry('123', 'foo'))
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>>> i2.add(InventoryEntry('123', 'foo', 'file', ROOT_ID))
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517
>>> i1 == i2
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518
True
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519
"""
435
if self is other:
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return 0
437
438
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if not isinstance(other, Inventory):
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521
return NotImplemented
440
522
441
if self.id_set() ^ other.id_set():
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return 1
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for file_id in self._byid:
445
c = cmp(self[file_id], other[file_id])
446
if c: return c
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return 0
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def id2path(self, file_id):
452
"""Return as a list the path to file_id."""
523
if len(self._byid) != len(other._byid):
524
# shortcut: obviously not the same
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return False
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527
return self._byid == other._byid
528
529
530
def __ne__(self, other):
531
return not (self == other)
532
533
534
def __hash__(self):
535
raise ValueError('not hashable')
536
537
538
539
def get_idpath(self, file_id):
540
"""Return a list of file_ids for the path to an entry.
541
542
The list contains one element for each directory followed by
543
the id of the file itself. So the length of the returned list
544
is equal to the depth of the file in the tree, counting the
545
root directory as depth 1.
546
"""
453
547
p = []
454
548
while file_id != None:
455
ie = self[file_id]
456
p = [ie.name] + p
549
try:
550
ie = self._byid[file_id]
551
except KeyError:
552
raise BzrError("file_id {%s} not found in inventory" % file_id)
553
p.insert(0, ie.file_id)
457
554
file_id = ie.parent_id
458
return joinpath(p)
555
return p
556
557
558
def id2path(self, file_id):
559
"""Return as a list the path to file_id."""
560
561
# get all names, skipping root
562
p = [self[fid].name for fid in self.get_idpath(file_id)[1:]]
563
return os.sep.join(p)
459
564
460
565
461
566
467
572
468
573
This returns the entry of the last component in the path,
469
574
which may be either a file or a directory.
575
576
Returns None iff the path is not found.
470
577
"""
471
assert isinstance(name, types.StringTypes)
472
473
parent_id = None
474
for f in splitpath(name):
578
if isinstance(name, types.StringTypes):
579
name = splitpath(name)
580
581
mutter("lookup path %r" % name)
582
583
parent = self.root
584
for f in name:
475
585
try:
476
cie = self._tree[parent_id][f]
586
cie = parent.children[f]
477
587
assert cie.name == f
478
parent_id = cie.file_id
588
assert cie.parent_id == parent.file_id
589
parent = cie
479
590
except KeyError:
480
591
# or raise an error?
481
592
return None
482
593
483
return parent_id
484
485
486
def get_child(self, parent_id, child_name):
487
return self._tree[parent_id].get(child_name)
594
return parent.file_id
488
595
489
596
490
597
def has_filename(self, names):
492
599
493
600
494
601
def has_id(self, file_id):
495
assert isinstance(file_id, str)
496
602
return self._byid.has_key(file_id)
497
603
498
604
499
500
if __name__ == '__main__':
501
import doctest, inventory
502
doctest.testmod(inventory)
605
def rename(self, file_id, new_parent_id, new_name):
606
"""Move a file within the inventory.
607
608
This can change either the name, or the parent, or both.
609
610
This does not move the working file."""
611
if not is_valid_name(new_name):
612
raise BzrError("not an acceptable filename: %r" % new_name)
613
614
new_parent = self._byid[new_parent_id]
615
if new_name in new_parent.children:
616
raise BzrError("%r already exists in %r" % (new_name, self.id2path(new_parent_id)))
617
618
new_parent_idpath = self.get_idpath(new_parent_id)
619
if file_id in new_parent_idpath:
620
raise BzrError("cannot move directory %r into a subdirectory of itself, %r"
621
% (self.id2path(file_id), self.id2path(new_parent_id)))
622
623
file_ie = self._byid[file_id]
624
old_parent = self._byid[file_ie.parent_id]
625
626
# TODO: Don't leave things messed up if this fails
627
628
del old_parent.children[file_ie.name]
629
new_parent.children[new_name] = file_ie
630
631
file_ie.name = new_name
632
file_ie.parent_id = new_parent_id
633
634
635
636
637
_NAME_RE = re.compile(r'^[^/\\]+$')
638
639
def is_valid_name(name):
640
return bool(_NAME_RE.match(name))
Loggerhead is a web-based interface for Breezy
Version: 2.0.1