log: follow filenames through renames (issue647)
In commands.log a displayer was initialized from
cmdutil.show_changeset() with the initial matchfn (which designates
the specified files which only is correct in the highest revision in
the range). prep() is handed the correct list of files, but
displayer.show() didn't use that list but keept using the original
matchfn.
The matchfn argument to cmdutil.show_changeset() wasn't specified in
other places and is only used in .show(), so now we give the matchfn
as an optional parameter to .show().
We do however still have to detect --patch and --stat from opts in
show_changeset() and let it imply a matchall, but that can now be
overruled with the new .show() matchfn parameter.
# manifest.py - manifest revision class for mercurial
#
# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from i18n import _
import mdiff, parsers, error, revlog
import array, struct
class manifestdict(dict):
def __init__(self, mapping=None, flags=None):
if mapping is None:
mapping = {}
if flags is None:
flags = {}
dict.__init__(self, mapping)
self._flags = flags
def flags(self, f):
return self._flags.get(f, "")
def set(self, f, flags):
self._flags[f] = flags
def copy(self):
return manifestdict(self, dict.copy(self._flags))
class manifest(revlog.revlog):
def __init__(self, opener):
self._mancache = None
revlog.revlog.__init__(self, opener, "00manifest.i")
def parse(self, lines):
mfdict = manifestdict()
parsers.parse_manifest(mfdict, mfdict._flags, lines)
return mfdict
def readdelta(self, node):
r = self.rev(node)
return self.parse(mdiff.patchtext(self.revdiff(r - 1, r)))
def read(self, node):
if node == revlog.nullid:
return manifestdict() # don't upset local cache
if self._mancache and self._mancache[0] == node:
return self._mancache[1]
text = self.revision(node)
arraytext = array.array('c', text)
mapping = self.parse(text)
self._mancache = (node, mapping, arraytext)
return mapping
def _search(self, m, s, lo=0, hi=None):
'''return a tuple (start, end) that says where to find s within m.
If the string is found m[start:end] are the line containing
that string. If start == end the string was not found and
they indicate the proper sorted insertion point. This was
taken from bisect_left, and modified to find line start/end as
it goes along.
m should be a buffer or a string
s is a string'''
def advance(i, c):
while i < lenm and m[i] != c:
i += 1
return i
if not s:
return (lo, lo)
lenm = len(m)
if not hi:
hi = lenm
while lo < hi:
mid = (lo + hi) // 2
start = mid
while start > 0 and m[start - 1] != '\n':
start -= 1
end = advance(start, '\0')
if m[start:end] < s:
# we know that after the null there are 40 bytes of sha1
# this translates to the bisect lo = mid + 1
lo = advance(end + 40, '\n') + 1
else:
# this translates to the bisect hi = mid
hi = start
end = advance(lo, '\0')
found = m[lo:end]
if cmp(s, found) == 0:
# we know that after the null there are 40 bytes of sha1
end = advance(end + 40, '\n')
return (lo, end + 1)
else:
return (lo, lo)
def find(self, node, f):
'''look up entry for a single file efficiently.
return (node, flags) pair if found, (None, None) if not.'''
if self._mancache and self._mancache[0] == node:
return self._mancache[1].get(f), self._mancache[1].flags(f)
text = self.revision(node)
start, end = self._search(text, f)
if start == end:
return None, None
l = text[start:end]
f, n = l.split('\0')
return revlog.bin(n[:40]), n[40:-1]
def add(self, map, transaction, link, p1=None, p2=None,
changed=None):
# apply the changes collected during the bisect loop to our addlist
# return a delta suitable for addrevision
def addlistdelta(addlist, x):
# start from the bottom up
# so changes to the offsets don't mess things up.
for start, end, content in reversed(x):
if content:
addlist[start:end] = array.array('c', content)
else:
del addlist[start:end]
return "".join(struct.pack(">lll", start, end, len(content)) + content
for start, end, content in x)
def checkforbidden(l):
for f in l:
if '\n' in f or '\r' in f:
raise error.RevlogError(
_("'\\n' and '\\r' disallowed in filenames: %r") % f)
# if we're using the cache, make sure it is valid and
# parented by the same node we're diffing against
if not (changed and self._mancache and p1 and self._mancache[0] == p1):
files = sorted(map)
checkforbidden(files)
# if this is changed to support newlines in filenames,
# be sure to check the templates/ dir again (especially *-raw.tmpl)
hex, flags = revlog.hex, map.flags
text = ''.join("%s\000%s%s\n" % (f, hex(map[f]), flags(f))
for f in files)
arraytext = array.array('c', text)
cachedelta = None
else:
added, removed = changed
addlist = self._mancache[2]
checkforbidden(added)
# combine the changed lists into one list for sorting
work = [(x, False) for x in added]
work.extend((x, True) for x in removed)
# this could use heapq.merge() (from python2.6+) or equivalent
# since the lists are already sorted
work.sort()
delta = []
dstart = None
dend = None
dline = [""]
start = 0
# zero copy representation of addlist as a buffer
addbuf = buffer(addlist)
# start with a readonly loop that finds the offset of
# each line and creates the deltas
for f, todelete in work:
# bs will either be the index of the item or the insert point
start, end = self._search(addbuf, f, start)
if not todelete:
l = "%s\000%s%s\n" % (f, revlog.hex(map[f]), map.flags(f))
else:
if start == end:
# item we want to delete was not found, error out
raise AssertionError(
_("failed to remove %s from manifest") % f)
l = ""
if dstart != None and dstart <= start and dend >= start:
if dend < end:
dend = end
if l:
dline.append(l)
else:
if dstart != None:
delta.append([dstart, dend, "".join(dline)])
dstart = start
dend = end
dline = [l]
if dstart != None:
delta.append([dstart, dend, "".join(dline)])
# apply the delta to the addlist, and get a delta for addrevision
cachedelta = addlistdelta(addlist, delta)
# the delta is only valid if we've been processing the tip revision
if p1 != self.tip():
cachedelta = None
arraytext = addlist
text = buffer(arraytext)
n = self.addrevision(text, transaction, link, p1, p2, cachedelta)
self._mancache = (n, map, arraytext)
return n