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- Committer: Martin Pool
- Date: 2005-06-10 06:34:26 UTC
- Revision ID: mbp@sourcefrog.net-20050610063426-cfcf5c0f96c271ec
- split out updated progress indicator
- files added:
- .rsyncexclude
- contrib
- contrib/bash
- contrib/zsh
- elementtree
- patches
- 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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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 errors import bailout, 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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>>> 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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"""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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To add a file to a branch ready to be committed, use Branch.add,
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which calls this."""
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if entry.file_id in self:
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if entry.file_id in self._byid:
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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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try:
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parent = self._byid[entry.parent_id]
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except KeyError:
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bailout("parent_id {%s} not in inventory" % entry.parent_id)
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if parent.children.has_key(entry.name):
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bailout("%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"""
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parts = bzrlib.osutils.splitpath(relpath)
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if len(parts) == 0:
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bailout("cannot re-add root of inventory")
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if file_id == None:
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file_id = bzrlib.branch.gen_file_id(relpath)
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parent_id = self.path2id(parts[:-1])
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assert parent_id != None
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ie = InventoryEntry(file_id, parts[-1],
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kind=kind, parent_id=parent_id)
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return self.add(ie)
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def __delitem__(self, file_id):
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"""Remove entry by 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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>>> del inv['123']
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457
"""
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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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# TODO: Test deleting all children; maybe hoist to a separate
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# deltree method?
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if ie.kind == 'directory':
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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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468
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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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def to_element(self):
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"""Construct from XML Element
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>>> inv = Inventory()
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>>> 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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def __cmp__(self, other):
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def __eq__(self, other):
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"""Compare two sets by comparing their contents.
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>>> i1 = Inventory()
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>>> i2 = Inventory()
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>>> i1 == i2
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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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509
>>> 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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>>> i1 == i2
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True
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"""
435
if self is other:
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return 0
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if not isinstance(other, Inventory):
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return NotImplemented
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if self.id_set() ^ other.id_set():
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return 1
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for file_id in self._byid:
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c = cmp(self[file_id], other[file_id])
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if c: return c
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return 0
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def id2path(self, file_id):
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"""Return as a list the path to file_id."""
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if len(self._byid) != len(other._byid):
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# shortcut: obviously not the same
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return False
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return self._byid == other._byid
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525
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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532
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def get_idpath(self, file_id):
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"""Return a list of file_ids for the path to an entry.
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537
The list contains one element for each directory followed by
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the id of the file itself. So the length of the returned list
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is equal to the depth of the file in the tree, counting the
540
root directory as depth 1.
541
"""
453
542
p = []
454
543
while file_id != None:
455
ie = self[file_id]
456
p = [ie.name] + p
544
try:
545
ie = self._byid[file_id]
546
except KeyError:
547
bailout("file_id {%s} not found in inventory" % file_id)
548
p.insert(0, ie.file_id)
457
549
file_id = ie.parent_id
458
return joinpath(p)
550
return p
551
552
553
def id2path(self, file_id):
554
"""Return as a list the path to file_id."""
555
556
# get all names, skipping root
557
p = [self[fid].name for fid in self.get_idpath(file_id)[1:]]
558
return os.sep.join(p)
459
559
460
560
461
561
467
567
468
568
This returns the entry of the last component in the path,
469
569
which may be either a file or a directory.
570
571
Returns None iff the path is not found.
470
572
"""
471
assert isinstance(name, types.StringTypes)
472
473
parent_id = None
474
for f in splitpath(name):
573
if isinstance(name, types.StringTypes):
574
name = splitpath(name)
575
576
mutter("lookup path %r" % name)
577
578
parent = self.root
579
for f in name:
475
580
try:
476
cie = self._tree[parent_id][f]
581
cie = parent.children[f]
477
582
assert cie.name == f
478
parent_id = cie.file_id
583
assert cie.parent_id == parent.file_id
584
parent = cie
479
585
except KeyError:
480
586
# or raise an error?
481
587
return None
482
588
483
return parent_id
484
485
486
def get_child(self, parent_id, child_name):
487
return self._tree[parent_id].get(child_name)
589
return parent.file_id
488
590
489
591
490
592
def has_filename(self, names):
492
594
493
595
494
596
def has_id(self, file_id):
495
assert isinstance(file_id, str)
496
597
return self._byid.has_key(file_id)
497
598
498
599
499
500
if __name__ == '__main__':
501
import doctest, inventory
502
doctest.testmod(inventory)
600
def rename(self, file_id, new_parent_id, new_name):
601
"""Move a file within the inventory.
602
603
This can change either the name, or the parent, or both.
604
605
This does not move the working file."""
606
if not is_valid_name(new_name):
607
bailout("not an acceptable filename: %r" % new_name)
608
609
new_parent = self._byid[new_parent_id]
610
if new_name in new_parent.children:
611
bailout("%r already exists in %r" % (new_name, self.id2path(new_parent_id)))
612
613
new_parent_idpath = self.get_idpath(new_parent_id)
614
if file_id in new_parent_idpath:
615
bailout("cannot move directory %r into a subdirectory of itself, %r"
616
% (self.id2path(file_id), self.id2path(new_parent_id)))
617
618
file_ie = self._byid[file_id]
619
old_parent = self._byid[file_ie.parent_id]
620
621
# TODO: Don't leave things messed up if this fails
622
623
del old_parent.children[file_ie.name]
624
new_parent.children[new_name] = file_ie
625
626
file_ie.name = new_name
627
file_ie.parent_id = new_parent_id
628
629
630
631
632
_NAME_RE = re.compile(r'^[^/\\]+$')
633
634
def is_valid_name(name):
635
return bool(_NAME_RE.match(name))
Loggerhead is a web-based interface for Breezy
Version: 2.0.1