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# index.py

# This module is part of GitPython and is released under

# the BSD License: http://www.opensource.org/licenses/bsd-license.php

"""

Module containing Index implementation, allowing to perform all kinds of index

manipulations such as querying and merging.

"""

import struct

import binascii

import mmap

import objects

import tempfile

import os

import sys

import stat

import subprocess

import glob

import git.diff as diff

from errors import GitCommandError

from git.objects import Blob, Tree, Object, Commit

from git.utils import SHA1Writer, LazyMixin, ConcurrentWriteOperation, join_path_native

class CheckoutError( Exception ):

"""Thrown if a file could not be checked out from the index as it contained

changes.

The .failed_files attribute contains a list of relative paths that failed

to be checked out as they contained changes that did not exist in the index.

The .failed_reasons attribute contains a string informing about the actual

cause of the issue.

The .valid_files attribute contains a list of relative paths to files that

were checked out successfully and hence match the version stored in the

index"""

def __init__(self, message, failed_files, valid_files, failed_reasons):

Exception.__init__(self, message)

self.failed_files = failed_files

self.failed_reasons = failed_reasons

self.valid_files = valid_files

def __str__(self):

return Exception.__str__(self) + ":%s" % self.failed_files

class _TemporaryFileSwap(object):

"""

Utility class moving a file to a temporary location within the same directory

and moving it back on to where on object deletion.

"""

__slots__ = ("file_path", "tmp_file_path")

def __init__(self, file_path):

self.file_path = file_path

self.tmp_file_path = self.file_path + tempfile.mktemp('','','')

# it may be that the source does not exist

try:

os.rename(self.file_path, self.tmp_file_path)

except OSError:

pass

def __del__(self):

if os.path.isfile(self.tmp_file_path):

if os.name == 'nt' and os.path.exists(self.file_path):

os.remove(self.file_path)

os.rename(self.tmp_file_path, self.file_path)

# END temp file exists

class BlobFilter(object):

"""

Predicate to be used by iter_blobs allowing to filter only return blobs which

match the given list of directories or files.

The given paths are given relative to the repository.

"""

__slots__ = 'paths'

def __init__(self, paths):

"""

``paths``

tuple or list of paths which are either pointing to directories or

to files relative to the current repository

"""

self.paths = paths

def __call__(self, stage_blob):

path = stage_blob[1].path

for p in self.paths:

if path.startswith(p):

return True

# END for each path in filter paths

return False

class BaseIndexEntry(tuple):

"""

Small Brother of an index entry which can be created to describe changes

done to the index in which case plenty of additional information is not requried.

As the first 4 data members match exactly to the IndexEntry type, methods

expecting a BaseIndexEntry can also handle full IndexEntries even if they

use numeric indices for performance reasons.

"""

def __str__(self):

return "%o %s %i\t%s" % (self.mode, self.sha, self.stage, self.path)

@property

def mode(self):

"""

File Mode, compatible to stat module constants

"""

return self[0]

@property

def sha(self):

"""

hex sha of the blob

"""

return self[1]

@property

def stage(self):

"""

Stage of the entry, either:

0 = default stage

1 = stage before a merge or common ancestor entry in case of a 3 way merge

2 = stage of entries from the 'left' side of the merge

3 = stage of entries from the right side of the merge

Note:

For more information, see http://www.kernel.org/pub/software/scm/git/docs/git-read-tree.html

"""

return self[2]

@property

def path(self):

return self[3]

@classmethod

def from_blob(cls, blob, stage = 0):

"""

Returns

Fully equipped BaseIndexEntry at the given stage

"""

return cls((blob.mode, blob.sha, stage, blob.path))

class IndexEntry(BaseIndexEntry):

"""

Allows convenient access to IndexEntry data without completely unpacking it.

Attributes usully accessed often are cached in the tuple whereas others are

unpacked on demand.

See the properties for a mapping between names and tuple indices.

"""

@property

def ctime(self):

"""

Returns

Tuple(int_time_seconds_since_epoch, int_nano_seconds) of the

file's creation time

"""

return struct.unpack(">LL", self[4])

@property

def mtime(self):

"""

See ctime property, but returns modification time

"""

return struct.unpack(">LL", self[5])

@property

def dev(self):

"""

Device ID

"""

return self[6]

@property

def inode(self):

"""

Inode ID

"""

return self[7]

@property

def uid(self):

"""

User ID

"""

return self[8]

@property

def gid(self):

"""

Group ID

"""

return self[9]

@property

def size(self):

"""

Uncompressed size of the blob

Note

Will be 0 if the stage is not 0 ( hence it is an unmerged entry )

"""

return self[10]

@classmethod

def from_base(cls, base):

"""

Returns

Minimal entry as created from the given BaseIndexEntry instance.

Missing values will be set to null-like values

``base``

Instance of type BaseIndexEntry

"""

time = struct.pack(">LL", 0, 0)

return IndexEntry((base.mode, base.sha, base.stage, base.path, time, time, 0, 0, 0, 0, 0))

@classmethod

def from_blob(cls, blob):

"""

Returns

Minimal entry resembling the given blob objecft

"""

time = struct.pack(">LL", 0, 0)

return IndexEntry((blob.mode, blob.sha, 0, blob.path, time, time, 0, 0, 0, 0, blob.size))

def clear_cache(func):

"""

Decorator for functions that alter the index using the git command. This would

invalidate our possibly existing entries dictionary which is why it must be

deleted to allow it to be lazily reread later.

Note

This decorator will not be required once all functions are implemented

natively which in fact is possible, but probably not feasible performance wise.

"""

def clear_cache_if_not_raised(self, *args, **kwargs):

rval = func(self, *args, **kwargs)

self._delete_entries_cache()

return rval

# END wrapper method

clear_cache_if_not_raised.__name__ = func.__name__

return clear_cache_if_not_raised

def default_index(func):

"""

Decorator assuring the wrapped method may only run if we are the default

repository index. This is as we rely on git commands that operate

on that index only.

"""

def check_default_index(self, *args, **kwargs):

if self._file_path != self._index_path():

raise AssertionError( "Cannot call %r on indices that do not represent the default git index" % func.__name__ )

return func(self, *args, **kwargs)

# END wrpaper method

check_default_index.__name__ = func.__name__

return check_default_index

class IndexFile(LazyMixin, diff.Diffable):

"""

Implements an Index that can be manipulated using a native implementation in

order to save git command function calls wherever possible.

It provides custom merging facilities allowing to merge without actually changing

your index or your working tree. This way you can perform own test-merges based

on the index only without having to deal with the working copy. This is useful

in case of partial working trees.

``Entries``

The index contains an entries dict whose keys are tuples of type IndexEntry

to facilitate access.

You may read the entries dict or manipulate it using IndexEntry instance, i.e.::

index.entries[index.get_entries_key(index_entry_instance)] = index_entry_instance

Otherwise changes to it will be lost when changing the index using its methods.

"""

__slots__ = ( "repo", "version", "entries", "_extension_data", "_file_path" )

_VERSION = 2 # latest version we support

S_IFGITLINK = 0160000

def __init__(self, repo, file_path=None):

"""

Initialize this Index instance, optionally from the given ``file_path``.

If no file_path is given, we will be created from the current index file.

If a stream is not given, the stream will be initialized from the current

repository's index on demand.

"""

self.repo = repo

self.version = self._VERSION

self._extension_data = ''

self._file_path = file_path or self._index_path()

def _set_cache_(self, attr):

if attr == "entries":

# read the current index

# try memory map for speed

try:

fp = open(self._file_path, "rb")

except IOError:

# in new repositories, there may be no index, which means we are empty

self.entries = dict()

return

# END exception handling

stream = fp

try:

raise Exception()

stream = mmap.mmap(fp.fileno(), 0, access=mmap.ACCESS_READ)

except Exception:

pass

# END memory mapping

try:

self._read_from_stream(stream)

finally:

pass

# make sure we close the stream ( possibly an mmap )

# and the file

#stream.close()

#if stream is not fp:

# fp.close()

# END read from default index on demand

else:

super(IndexFile, self)._set_cache_(attr)

def _index_path(self):

return join_path_native(self.repo.git_dir, "index")

@property

def path(self):

"""

Returns

Path to the index file we are representing

"""

return self._file_path

def _delete_entries_cache(self):

"""Safely clear the entries cache so it can be recreated"""

try:

del(self.entries)

except AttributeError:

# fails in python 2.6.5 with this exception

pass

# END exception handling

@classmethod

def _read_entry(cls, stream):

"""Return: One entry of the given stream"""

beginoffset = stream.tell()

ctime = struct.unpack(">8s", stream.read(8))[0]

mtime = struct.unpack(">8s", stream.read(8))[0]

(dev, ino, mode, uid, gid, size, sha, flags) = \

struct.unpack(">LLLLLL20sH", stream.read(20 + 4 * 6 + 2))

path_size = flags & 0x0fff

path = stream.read(path_size)

real_size = ((stream.tell() - beginoffset + 8) & ~7)

data = stream.read((beginoffset + real_size) - stream.tell())

return IndexEntry((mode, binascii.hexlify(sha), flags >> 12, path, ctime, mtime, dev, ino, uid, gid, size))

@classmethod

def _read_header(cls, stream):

"""Return tuple(version_long, num_entries) from the given stream"""

type_id = stream.read(4)

if type_id != "DIRC":

raise AssertionError("Invalid index file header: %r" % type_id)

version, num_entries = struct.unpack(">LL", stream.read(4 * 2))

assert version in (1, 2)

return version, num_entries

def _read_from_stream(self, stream):

"""

Initialize this instance with index values read from the given stream

"""

self.version, num_entries = self._read_header(stream)

count = 0

self.entries = dict()

while count < num_entries:

entry = self._read_entry(stream)

self.entries[self.get_entries_key(entry)] = entry

count += 1

# END for each entry

# the footer contains extension data and a sha on the content so far

# Keep the extension footer,and verify we have a sha in the end

# Extension data format is:

# 4 bytes ID

# 4 bytes length of chunk

# repeated 0 - N times

self._extension_data = stream.read(~0)

assert len(self._extension_data) > 19, "Index Footer was not at least a sha on content as it was only %i bytes in size" % len(self._extension_data)

content_sha = self._extension_data[-20:]

# truncate the sha in the end as we will dynamically create it anyway

self._extension_data = self._extension_data[:-20]

@classmethod

def _write_cache_entry(cls, stream, entry):

"""

Write an IndexEntry to a stream

"""

beginoffset = stream.tell()

stream.write(entry[4]) # ctime

stream.write(entry[5]) # mtime

path = entry[3]

plen = len(path) & 0x0fff # path length

assert plen == len(path), "Path %s too long to fit into index" % entry[3]

flags = plen | (entry[2] << 12)# stage and path length are 2 byte flags

stream.write(struct.pack(">LLLLLL20sH", entry[6], entry[7], entry[0],

entry[8], entry[9], entry[10], binascii.unhexlify(entry[1]), flags))

stream.write(path)

real_size = ((stream.tell() - beginoffset + 8) & ~7)

stream.write("\0" * ((beginoffset + real_size) - stream.tell()))

def write(self, file_path = None, ignore_tree_extension_data=False):

"""

Write the current state to our file path or to the given one

``file_path``

If None, we will write to our stored file path from which we have

been initialized. Otherwise we write to the given file path.

Please note that this will change the file_path of this index to

the one you gave.

``ignore_tree_extension_data``

If True, the TREE type extension data read in the index will not

be written to disk. Use this if you have altered the index and

would like to use git-write-tree afterwards to create a tree

representing your written changes.

If this data is present in the written index, git-write-tree

will instead write the stored/cached tree.

Alternatively, use IndexFile.write_tree() to handle this case

automatically

Returns

self

Note

Index writing based on the dulwich implementation

"""

write_op = ConcurrentWriteOperation(file_path or self._file_path)

stream = write_op._begin_writing()

stream = SHA1Writer(stream)

# header

stream.write("DIRC")

stream.write(struct.pack(">LL", self.version, len(self.entries)))

# body

entries_sorted = self.entries.values()

entries_sorted.sort(key=lambda e: (e[3], e[2])) # use path/stage as sort key

for entry in entries_sorted:

self._write_cache_entry(stream, entry)

# END for each entry

stored_ext_data = None

if ignore_tree_extension_data and self._extension_data and self._extension_data[:4] == 'TREE':

stored_ext_data = self._extension_data

self._extension_data = ''

# END extension data special handling

# write previously cached extensions data

stream.write(self._extension_data)

if stored_ext_data:

self._extension_data = stored_ext_data

# END reset previous ext data

# write the sha over the content

stream.write_sha()

write_op._end_writing()

# make sure we represent what we have written

if file_path is not None:

self._file_path = file_path

@clear_cache

@default_index

def merge_tree(self, rhs, base=None):

"""Merge the given rhs treeish into the current index, possibly taking

a common base treeish into account.

As opposed to the from_tree_ method, this allows you to use an already

existing tree as the left side of the merge

``rhs``

treeish reference pointing to the 'other' side of the merge.

``base``

optional treeish reference pointing to the common base of 'rhs' and

this index which equals lhs

Returns

self ( containing the merge and possibly unmerged entries in case of

conflicts )

Raise

GitCommandError in case there is a merge conflict. The error will

be raised at the first conflicting path. If you want to have proper

merge resolution to be done by yourself, you have to commit the changed

index ( or make a valid tree from it ) and retry with a three-way

index.from_tree call.

"""

# -i : ignore working tree status

# --aggressive : handle more merge cases

# -m : do an actual merge

args = ["--aggressive", "-i", "-m"]

if base is not None:

args.append(base)

args.append(rhs)

self.repo.git.read_tree(args)

return self

@classmethod

def from_tree(cls, repo, *treeish, **kwargs):

"""

Merge the given treeish revisions into a new index which is returned.

The original index will remain unaltered

``repo``

The repository treeish are located in.

``*treeish``

One, two or three Tree Objects or Commits. The result changes according to the

amount of trees.

If 1 Tree is given, it will just be read into a new index

If 2 Trees are given, they will be merged into a new index using a

two way merge algorithm. Tree 1 is the 'current' tree, tree 2 is the 'other'

one. It behaves like a fast-forward.

If 3 Trees are given, a 3-way merge will be performed with the first tree

being the common ancestor of tree 2 and tree 3. Tree 2 is the 'current' tree,

tree 3 is the 'other' one

``**kwargs``

Additional arguments passed to git-read-tree

Returns

New IndexFile instance. It will point to a temporary index location which

does not exist anymore. If you intend to write such a merged Index, supply

an alternate file_path to its 'write' method.

Note:

In the three-way merge case, --aggressive will be specified to automatically

resolve more cases in a commonly correct manner. Specify trivial=True as kwarg

to override that.

As the underlying git-read-tree command takes into account the current index,

it will be temporarily moved out of the way to assure there are no unsuspected

interferences.

"""

if len(treeish) == 0 or len(treeish) > 3:

raise ValueError("Please specify between 1 and 3 treeish, got %i" % len(treeish))

arg_list = list()

# ignore that working tree and index possibly are out of date

if len(treeish)>1:

# drop unmerged entries when reading our index and merging

arg_list.append("--reset")

# handle non-trivial cases the way a real merge does

arg_list.append("--aggressive")

# END merge handling

# tmp file created in git home directory to be sure renaming

# works - /tmp/ dirs could be on another device

tmp_index = tempfile.mktemp('','',repo.git_dir)

arg_list.append("--index-output=%s" % tmp_index)

arg_list.extend(treeish)

# move current index out of the way - otherwise the merge may fail

# as it considers existing entries. moving it essentially clears the index.

# Unfortunately there is no 'soft' way to do it.

# The _TemporaryFileSwap assure the original file get put back

index_handler = _TemporaryFileSwap(join_path_native(repo.git_dir, 'index'))

try:

repo.git.read_tree(*arg_list, **kwargs)

index = cls(repo, tmp_index)

index.entries # force it to read the file as we will delete the temp-file

del(index_handler) # release as soon as possible

finally:

if os.path.exists(tmp_index):

os.remove(tmp_index)

# END index merge handling

return index

@classmethod

def _index_mode_to_tree_index_mode(cls, index_mode):

"""

Cleanup a index_mode value.

This will return a index_mode that can be stored in a tree object.

``index_mode``

Index_mode to clean up.

"""

if stat.S_ISLNK(index_mode):

return stat.S_IFLNK

elif stat.S_ISDIR(index_mode):

return stat.S_IFDIR

elif stat.S_IFMT(index_mode) == cls.S_IFGITLINK:

return cls.S_IFGITLINK

ret = stat.S_IFREG | 0644

ret |= (index_mode & 0111)

return ret

# UTILITIES

def _iter_expand_paths(self, paths):

"""Expand the directories in list of paths to the corresponding paths accordingly,

Note: git will add items multiple times even if a glob overlapped

with manually specified paths or if paths where specified multiple

times - we respect that and do not prune"""

def raise_exc(e):

raise e

r = self.repo.working_tree_dir

rs = r + '/'

for path in paths:

abs_path = path

if not os.path.isabs(abs_path):

abs_path = os.path.join(r, path)

# END make absolute path

# resolve globs if possible

if '?' in path or '*' in path or '[' in path:

for f in self._iter_expand_paths(glob.glob(abs_path)):

yield f.replace(rs, '')

continue

# END glob handling

try:

for root, dirs, files in os.walk(abs_path, onerror=raise_exc):

for rela_file in files:

# add relative paths only

yield os.path.join(root.replace(rs, ''), rela_file)

# END for each file in subdir

# END for each subdirectory

except OSError:

# was a file or something that could not be iterated

yield path.replace(rs, '')

# END path exception handling

# END for each path

def _write_path_to_stdin(self, proc, filepath, item, append_or_prepend_nl,

fmakeexc, fprogress, read_from_stdout=True):

"""Write path to proc.stdin and make sure it processes the item, including progress.

:return: stdout string

:param append_or_prepend_nl:

* if -1, a newline will be sent before the filepath is printed.

* If 1, a newline will be appended after the filepath was printed.

* If 0, no additional newline will be sent.

:param read_from_stdout: if True, proc.stdout will be read after the item

was sent to stdin. In that case, it will return None

:note: There is a bug in git-update-index that prevents it from sending

reports just in time. This is why we have a version that tries to

read stdout and one which doesn't. In fact, the stdout is not

important as the piped-in files are processed anyway and just in time

:note: Newlines are essential here, gits behaviour is somewhat inconsistent

on this depending on the version, hence we try our best to deal with

newlines carefully. Usually the last newline will not be sent, instead

we will close stdin to break the pipe."""

fprogress(filepath, False, item)

rval = None

try:

if append_or_prepend_nl < 0:

proc.stdin.write('\n')

proc.stdin.write("%s" % filepath)

if append_or_prepend_nl > 0:

proc.stdin.write('\n')

except IOError:

# pipe broke, usually because some error happend

raise fmakeexc()

# END write exception handling

proc.stdin.flush()

if read_from_stdout:

rval = proc.stdout.readline().strip()

fprogress(filepath, True, item)

return rval

def iter_blobs(self, predicate = lambda t: True):

"""

Returns

Iterator yielding tuples of Blob objects and stages, tuple(stage, Blob)

``predicate``

Function(t) returning True if tuple(stage, Blob) should be yielded by the

iterator. A default filter, the BlobFilter, allows you to yield blobs

only if they match a given list of paths.

"""

for entry in self.entries.itervalues():

mode = self._index_mode_to_tree_index_mode(entry.mode)

blob = Blob(self.repo, entry.sha, mode, entry.path)

blob.size = entry.size

output = (entry.stage, blob)

if predicate(output):

yield output

# END for each entry

def unmerged_blobs(self):

"""

Returns

Iterator yielding dict(path : list( tuple( stage, Blob, ...))), being

a dictionary associating a path in the index with a list containing

sorted stage/blob pairs

Note:

Blobs that have been removed in one side simply do not exist in the

given stage. I.e. a file removed on the 'other' branch whose entries

are at stage 3 will not have a stage 3 entry.

"""

is_unmerged_blob = lambda t: t[0] != 0

path_map = dict()

for stage, blob in self.iter_blobs(is_unmerged_blob):

path_map.setdefault(blob.path, list()).append((stage, blob))

# END for each unmerged blob

for l in path_map.itervalues():

l.sort()

return path_map

@classmethod

def get_entries_key(cls, *entry):

"""

Returns

Key suitable to be used for the index.entries dictionary

``entry``

One instance of type BaseIndexEntry or the path and the stage

"""

if len(entry) == 1:

return (entry[0].path, entry[0].stage)

else:

return tuple(entry)

def resolve_blobs(self, iter_blobs):

"""

Resolve the blobs given in blob iterator. This will effectively remove the

index entries of the respective path at all non-null stages and add the given

blob as new stage null blob.

For each path there may only be one blob, otherwise a ValueError will be raised

claiming the path is already at stage 0.

Raise

ValueError if one of the blobs already existed at stage 0

Returns:

self

Note

You will have to write the index manually once you are done, i.e.

index.resolve_blobs(blobs).write()

"""

for blob in iter_blobs:

stage_null_key = (blob.path, 0)

if stage_null_key in self.entries:

raise ValueError( "Path %r already exists at stage 0" % blob.path )

# END assert blob is not stage 0 already

# delete all possible stages

for stage in (1, 2, 3):

try:

del( self.entries[(blob.path, stage)] )

except KeyError:

pass

# END ignore key errors

# END for each possible stage

self.entries[stage_null_key] = IndexEntry.from_blob(blob)

# END for each blob

return self

def update(self):

"""

Reread the contents of our index file, discarding all cached information

we might have.

Note:

This is a possibly dangerious operations as it will discard your changes

to index.entries

Returns

self

"""

self._delete_entries_cache()

# allows to lazily reread on demand

return self

def write_tree(self, missing_ok=False):

"""

Writes the Index in self to a corresponding Tree file into the repository

object database and returns it as corresponding Tree object.

``missing_ok``

If True, missing objects referenced by this index will not result

in an error.

Returns

Tree object representing this index

"""

index_path = self._index_path()

tmp_index_mover = _TemporaryFileSwap(index_path)

self.write(index_path, ignore_tree_extension_data=True)

tree_sha = self.repo.git.write_tree(missing_ok=missing_ok)

del(tmp_index_mover) # as soon as possible

return Tree(self.repo, tree_sha, 0, '')

def _process_diff_args(self, args):

try:

args.pop(args.index(self))

except IndexError:

pass

# END remove self

return args

def _to_relative_path(self, path):

"""

Return

Version of path relative to our git directory or raise ValueError

if it is not within our git direcotory

"""

if not os.path.isabs(path):

return path

relative_path = path.replace(self.repo.working_tree_dir+os.sep, "")

if relative_path == path:

raise ValueError("Absolute path %r is not in git repository at %r" % (path,self.repo.working_tree_dir))

return relative_path

def _preprocess_add_items(self, items):

"""

Split the items into two lists of path strings and BaseEntries.

"""

paths = list()

entries = list()

for item in items:

if isinstance(item, basestring):

paths.append(self._to_relative_path(item))

elif isinstance(item, Blob):

entries.append(BaseIndexEntry.from_blob(item))

elif isinstance(item, BaseIndexEntry):

entries.append(item)

else:

raise TypeError("Invalid Type: %r" % item)

# END for each item

return (paths, entries)

@clear_cache

@default_index

def add(self, items, force=True, fprogress=lambda *args: None, path_rewriter=None):

"""

Add files from the working tree, specific blobs or BaseIndexEntries

to the index. The underlying index file will be written immediately, hence

you should provide as many items as possible to minimize the amounts of writes

:param items:

Multiple types of items are supported, types can be mixed within one call.

Different types imply a different handling. File paths may generally be

relative or absolute.

- path string

strings denote a relative or absolute path into the repository pointing to

an existing file, i.e. CHANGES, lib/myfile.ext, '/home/gitrepo/lib/myfile.ext'.

Paths provided like this must exist. When added, they will be written

into the object database.

PathStrings may contain globs, such as 'lib/__init__*' or can be directories

like 'lib', the latter ones will add all the files within the dirctory and

subdirectories.

This equals a straight git-add.

They are added at stage 0

- Blob object

Blobs are added as they are assuming a valid mode is set.

The file they refer to may or may not exist in the file system, but

must be a path relative to our repository.

If their sha is null ( 40*0 ), their path must exist in the file system

relative to the git repository as an object will be created from

the data at the path.

The handling now very much equals the way string paths are processed, except that

the mode you have set will be kept. This allows you to create symlinks

by settings the mode respectively and writing the target of the symlink

directly into the file. This equals a default Linux-Symlink which

is not dereferenced automatically, except that it can be created on

filesystems not supporting it as well.

Please note that globs or directories are not allowed in Blob objects.

They are added at stage 0

- BaseIndexEntry or type

Handling equals the one of Blob objects, but the stage may be

explicitly set.

:param force:

If True, otherwise ignored or excluded files will be

added anyway.

As opposed to the git-add command, we enable this flag by default

as the API user usually wants the item to be added even though

they might be excluded.

:param fprogress:

Function with signature f(path, done=False, item=item) called for each

path to be added, once once it is about to be added where done==False

and once after it was added where done=True.

item is set to the actual item we handle, either a Path or a BaseIndexEntry

Please note that the processed path is not guaranteed to be present

in the index already as the index is currently being processed.

:param path_rewriter:

Function with signature (string) func(BaseIndexEntry) function returning a path

for each passed entry which is the path to be actually recorded for the

object created from entry.path. This allows you to write an index which

is not identical to the layout of the actual files on your hard-dist.

If not None and ``items`` contain plain paths, these paths will be

converted to Entries beforehand and passed to the path_rewriter.

Please note that entry.path is relative to the git repository.

:return:

List(BaseIndexEntries) representing the entries just actually added.

Raises

GitCommandError if a supplied Path did not exist. Please note that BaseIndexEntry

Objects that do not have a null sha will be added even if their paths

do not exist.

"""

# sort the entries into strings and Entries, Blobs are converted to entries

# automatically

# paths can be git-added, for everything else we use git-update-index

entries_added = list()

paths, entries = self._preprocess_add_items(items)

if paths and path_rewriter:

for path in paths:

abspath = os.path.abspath(path)

gitrelative_path = abspath[len(self.repo.working_tree_dir)+1:]

blob = Blob(self.repo, Blob.NULL_HEX_SHA, os.stat(abspath).st_mode, gitrelative_path)

entries.append(BaseIndexEntry.from_blob(blob))

# END for each path

del(paths[:])

# END rewrite paths

# HANDLE PATHS

if paths:

# to get suitable progress information, pipe paths to stdin

args = ("--add", "--replace", "--verbose", "--stdin")

proc = self.repo.git.update_index(*args, **{'as_process':True, 'istream':subprocess.PIPE})

make_exc = lambda : GitCommandError(("git-update-index",)+args, 128, proc.stderr.read())

added_files = list()

prepend_newline = 0

for filepath in self._iter_expand_paths(paths):

self._write_path_to_stdin(proc, filepath, filepath, prepend_newline, make_exc, fprogress, read_from_stdout=False)

prepend_newline = -1

added_files.append(filepath)

# END for each filepath

self._flush_stdin_and_wait(proc, ignore_stdout=True) # ignore stdout

# force rereading our entries once it is all done

self._delete_entries_cache()

entries_added.extend(self.entries[(f,0)] for f in added_files)

# END path handling

# HANDLE ENTRIES

if entries:

null_mode_entries = [ e for e in entries if e.mode == 0 ]

if null_mode_entries:

raise ValueError("At least one Entry has a null-mode - please use index.remove to remove files for clarity")

View remainder of file in raw view

GitPython/lib/git/index.py at 0.2 · og-python-scripts/GitPython · GitHub

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