templates: add filter to reverse list
The filter supports only lists because for lists, it’s straightforward to
implement. Reversing text doesn’t seem very useful and is hard to implement.
Reversing the bytes would break multi-bytes encodings. Reversing the code
points would break characters consisting of multiple code points. Reversing
graphemes is non-trivial without using a library not included in the standard
library.
# stuff related specifically to patch manipulation / parsing
#
# Copyright 2008 Mark Edgington <edgimar@gmail.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
#
# This code is based on the Mark Edgington's crecord extension.
# (Itself based on Bryan O'Sullivan's record extension.)
import os
import re
import signal
from .i18n import _
from .pycompat import (
getattr,
open,
)
from . import (
diffhelper,
encoding,
error,
patch as patchmod,
pycompat,
scmutil,
util,
)
from .utils import stringutil
stringio = util.stringio
# patch comments based on the git one
diffhelptext = _(
b"""# To remove '-' lines, make them ' ' lines (context).
# To remove '+' lines, delete them.
# Lines starting with # will be removed from the patch.
"""
)
hunkhelptext = _(
b"""#
# If the patch applies cleanly, the edited hunk will immediately be
# added to the record list. If it does not apply cleanly, a rejects file
# will be generated. You can use that when you try again. If all lines
# of the hunk are removed, then the edit is aborted and the hunk is left
# unchanged.
"""
)
patchhelptext = _(
b"""#
# If the patch applies cleanly, the edited patch will immediately
# be finalised. If it does not apply cleanly, rejects files will be
# generated. You can use those when you try again.
"""
)
try:
import curses
import curses.ascii
curses.error
except (ImportError, AttributeError):
curses = None
class fallbackerror(error.Abort):
"""Error that indicates the client should try to fallback to text mode."""
# Inherits from error.Abort so that existing behavior is preserved if the
# calling code does not know how to fallback.
def checkcurses(ui):
"""Return True if the user wants to use curses
This method returns True if curses is found (and that python is built with
it) and that the user has the correct flag for the ui.
"""
return curses and ui.interface(b"chunkselector") == b"curses"
class patchnode:
"""abstract class for patch graph nodes
(i.e. patchroot, header, hunk, hunkline)
"""
def firstchild(self):
raise NotImplementedError(b"method must be implemented by subclass")
def lastchild(self):
raise NotImplementedError(b"method must be implemented by subclass")
def allchildren(self):
"""Return a list of all of the direct children of this node"""
raise NotImplementedError(b"method must be implemented by subclass")
def nextsibling(self):
"""
Return the closest next item of the same type where there are no items
of different types between the current item and this closest item.
If no such item exists, return None.
"""
raise NotImplementedError(b"method must be implemented by subclass")
def prevsibling(self):
"""
Return the closest previous item of the same type where there are no
items of different types between the current item and this closest item.
If no such item exists, return None.
"""
raise NotImplementedError(b"method must be implemented by subclass")
def parentitem(self):
raise NotImplementedError(b"method must be implemented by subclass")
def nextitem(self, skipfolded=True):
"""
Try to return the next item closest to this item, regardless of item's
type (header, hunk, or hunkline).
If skipfolded == True, and the current item is folded, then the child
items that are hidden due to folding will be skipped when determining
the next item.
If it is not possible to get the next item, return None.
"""
try:
itemfolded = self.folded
except AttributeError:
itemfolded = False
if skipfolded and itemfolded:
nextitem = self.nextsibling()
if nextitem is None:
try:
nextitem = self.parentitem().nextsibling()
except AttributeError:
nextitem = None
return nextitem
else:
# try child
item = self.firstchild()
if item is not None:
return item
# else try next sibling
item = self.nextsibling()
if item is not None:
return item
try:
# else try parent's next sibling
item = self.parentitem().nextsibling()
if item is not None:
return item
# else return grandparent's next sibling (or None)
return self.parentitem().parentitem().nextsibling()
except AttributeError: # parent and/or grandparent was None
return None
def previtem(self):
"""
Try to return the previous item closest to this item, regardless of
item's type (header, hunk, or hunkline).
If it is not possible to get the previous item, return None.
"""
# try previous sibling's last child's last child,
# else try previous sibling's last child, else try previous sibling
prevsibling = self.prevsibling()
if prevsibling is not None:
prevsiblinglastchild = prevsibling.lastchild()
if (prevsiblinglastchild is not None) and not prevsibling.folded:
prevsiblinglclc = prevsiblinglastchild.lastchild()
if (
prevsiblinglclc is not None
) and not prevsiblinglastchild.folded:
return prevsiblinglclc
else:
return prevsiblinglastchild
else:
return prevsibling
# try parent (or None)
return self.parentitem()
class patch(patchnode, list): # todo: rename patchroot
"""
list of header objects representing the patch.
"""
def __init__(self, headerlist):
self.extend(headerlist)
# add parent patch object reference to each header
for header in self:
header.patch = self
class uiheader(patchnode):
"""patch header
xxx shouldn't we move this to mercurial/patch.py ?
"""
def __init__(self, header):
self.nonuiheader = header
# flag to indicate whether to apply this chunk
self.applied = True
# flag which only affects the status display indicating if a node's
# children are partially applied (i.e. some applied, some not).
self.partial = False
# flag to indicate whether to display as folded/unfolded to user
self.folded = True
# list of all headers in patch
self.patch = None
# flag is False if this header was ever unfolded from initial state
self.neverunfolded = True
self.hunks = [uihunk(h, self) for h in self.hunks]
def prettystr(self):
x = stringio()
self.pretty(x)
return x.getvalue()
def nextsibling(self):
numheadersinpatch = len(self.patch)
indexofthisheader = self.patch.index(self)
if indexofthisheader < numheadersinpatch - 1:
nextheader = self.patch[indexofthisheader + 1]
return nextheader
else:
return None
def prevsibling(self):
indexofthisheader = self.patch.index(self)
if indexofthisheader > 0:
previousheader = self.patch[indexofthisheader - 1]
return previousheader
else:
return None
def parentitem(self):
"""
there is no 'real' parent item of a header that can be selected,
so return None.
"""
return None
def firstchild(self):
"""return the first child of this item, if one exists. otherwise
None."""
if len(self.hunks) > 0:
return self.hunks[0]
else:
return None
def lastchild(self):
"""return the last child of this item, if one exists. otherwise
None."""
if len(self.hunks) > 0:
return self.hunks[-1]
else:
return None
def allchildren(self):
"""return a list of all of the direct children of this node"""
return self.hunks
def __getattr__(self, name):
return getattr(self.nonuiheader, name)
class uihunkline(patchnode):
"""represents a changed line in a hunk"""
def __init__(self, linetext, hunk):
self.linetext = linetext
self.applied = True
# the parent hunk to which this line belongs
self.hunk = hunk
# folding lines currently is not used/needed, but this flag is needed
# in the previtem method.
self.folded = False
def prettystr(self):
return self.linetext
def nextsibling(self):
numlinesinhunk = len(self.hunk.changedlines)
indexofthisline = self.hunk.changedlines.index(self)
if indexofthisline < numlinesinhunk - 1:
nextline = self.hunk.changedlines[indexofthisline + 1]
return nextline
else:
return None
def prevsibling(self):
indexofthisline = self.hunk.changedlines.index(self)
if indexofthisline > 0:
previousline = self.hunk.changedlines[indexofthisline - 1]
return previousline
else:
return None
def parentitem(self):
"""return the parent to the current item"""
return self.hunk
def firstchild(self):
"""return the first child of this item, if one exists. otherwise
None."""
# hunk-lines don't have children
return None
def lastchild(self):
"""return the last child of this item, if one exists. otherwise
None."""
# hunk-lines don't have children
return None
class uihunk(patchnode):
"""ui patch hunk, wraps a hunk and keep track of ui behavior"""
maxcontext = 3
def __init__(self, hunk, header):
self._hunk = hunk
self.changedlines = [uihunkline(line, self) for line in hunk.hunk]
self.header = header
# used at end for detecting how many removed lines were un-applied
self.originalremoved = self.removed
# flag to indicate whether to display as folded/unfolded to user
self.folded = True
# flag to indicate whether to apply this chunk
self.applied = True
# flag which only affects the status display indicating if a node's
# children are partially applied (i.e. some applied, some not).
self.partial = False
def nextsibling(self):
numhunksinheader = len(self.header.hunks)
indexofthishunk = self.header.hunks.index(self)
if indexofthishunk < numhunksinheader - 1:
nexthunk = self.header.hunks[indexofthishunk + 1]
return nexthunk
else:
return None
def prevsibling(self):
indexofthishunk = self.header.hunks.index(self)
if indexofthishunk > 0:
previoushunk = self.header.hunks[indexofthishunk - 1]
return previoushunk
else:
return None
def parentitem(self):
"""return the parent to the current item"""
return self.header
def firstchild(self):
"""return the first child of this item, if one exists. otherwise
None."""
if len(self.changedlines) > 0:
return self.changedlines[0]
else:
return None
def lastchild(self):
"""return the last child of this item, if one exists. otherwise
None."""
if len(self.changedlines) > 0:
return self.changedlines[-1]
else:
return None
def allchildren(self):
"""return a list of all of the direct children of this node"""
return self.changedlines
def countchanges(self):
"""changedlines -> (n+,n-)"""
add = len(
[
l
for l in self.changedlines
if l.applied and l.prettystr().startswith(b'+')
]
)
rem = len(
[
l
for l in self.changedlines
if l.applied and l.prettystr().startswith(b'-')
]
)
return add, rem
def getfromtoline(self):
# calculate the number of removed lines converted to context lines
removedconvertedtocontext = self.originalremoved - self.removed
contextlen = (
len(self.before) + len(self.after) + removedconvertedtocontext
)
if self.after and self.after[-1] == diffhelper.MISSING_NEWLINE_MARKER:
contextlen -= 1
fromlen = contextlen + self.removed
tolen = contextlen + self.added
# diffutils manual, section "2.2.2.2 detailed description of unified
# format": "an empty hunk is considered to end at the line that
# precedes the hunk."
#
# so, if either of hunks is empty, decrease its line start. --immerrr
# but only do this if fromline > 0, to avoid having, e.g fromline=-1.
fromline, toline = self.fromline, self.toline
if fromline != 0:
if fromlen == 0:
fromline -= 1
if tolen == 0 and toline > 0:
toline -= 1
fromtoline = b'@@ -%d,%d +%d,%d @@%s\n' % (
fromline,
fromlen,
toline,
tolen,
self.proc and (b' ' + self.proc),
)
return fromtoline
def write(self, fp):
# updated self.added/removed, which are used by getfromtoline()
self.added, self.removed = self.countchanges()
fp.write(self.getfromtoline())
hunklinelist = []
# add the following to the list: (1) all applied lines, and
# (2) all unapplied removal lines (convert these to context lines)
for changedline in self.changedlines:
changedlinestr = changedline.prettystr()
if changedline.applied:
hunklinelist.append(changedlinestr)
elif changedlinestr.startswith(b"-"):
hunklinelist.append(b" " + changedlinestr[1:])
fp.write(b''.join(self.before + hunklinelist + self.after))
pretty = write
def prettystr(self):
x = stringio()
self.pretty(x)
return x.getvalue()
def reversehunk(self):
"""return a recordhunk which is the reverse of the hunk
Assuming the displayed patch is diff(A, B) result. The returned hunk is
intended to be applied to B, instead of A.
For example, when A is "0\n1\n2\n6\n" and B is "0\n3\n4\n5\n6\n", and
the user made the following selection:
0
[x] -1 [x]: selected
[ ] -2 [ ]: not selected
[x] +3
[ ] +4
[x] +5
6
This function returns a hunk like:
0
-3
-4
-5
+1
+4
6
Note "4" was first deleted then added. That's because "4" exists in B
side and "-4" must exist between "-3" and "-5" to make the patch
applicable to B.
"""
dels = []
adds = []
noeol = False
for line in self.changedlines:
text = line.linetext
if line.linetext == diffhelper.MISSING_NEWLINE_MARKER:
noeol = True
continue
if line.applied:
if text.startswith(b'+'):
dels.append(text[1:])
elif text.startswith(b'-'):
adds.append(text[1:])
elif text.startswith(b'+'):
dels.append(text[1:])
adds.append(text[1:])
hunk = [b'-%s' % l for l in dels] + [b'+%s' % l for l in adds]
if noeol and hunk:
# Remove the newline from the end of the hunk.
hunk[-1] = hunk[-1][:-1]
h = self._hunk
return patchmod.recordhunk(
h.header, h.toline, h.fromline, h.proc, h.before, hunk, h.after
)
def __getattr__(self, name):
return getattr(self._hunk, name)
def __repr__(self):
return '<hunk %r@%d>' % (self.filename(), self.fromline)
def filterpatch(ui, chunks, chunkselector, operation=None):
"""interactively filter patch chunks into applied-only chunks"""
chunks = list(chunks)
# convert chunks list into structure suitable for displaying/modifying
# with curses. create a list of headers only.
headers = [c for c in chunks if isinstance(c, patchmod.header)]
# if there are no changed files
if len(headers) == 0:
return [], {}
uiheaders = [uiheader(h) for h in headers]
# let user choose headers/hunks/lines, and mark their applied flags
# accordingly
ret = chunkselector(ui, uiheaders, operation=operation)
appliedhunklist = []
for hdr in uiheaders:
if hdr.applied and (
hdr.special() or len([h for h in hdr.hunks if h.applied]) > 0
):
appliedhunklist.append(hdr)
fixoffset = 0
for hnk in hdr.hunks:
if hnk.applied:
appliedhunklist.append(hnk)
# adjust the 'to'-line offset of the hunk to be correct
# after de-activating some of the other hunks for this file
if fixoffset:
# hnk = copy.copy(hnk) # necessary??
hnk.toline += fixoffset
else:
fixoffset += hnk.removed - hnk.added
return (appliedhunklist, ret)
def chunkselector(ui, headerlist, operation=None):
"""
curses interface to get selection of chunks, and mark the applied flags
of the chosen chunks.
"""
ui.write(_(b'starting interactive selection\n'))
chunkselector = curseschunkselector(headerlist, ui, operation)
origsigtstp = sentinel = object()
if util.safehasattr(signal, b'SIGTSTP'):
origsigtstp = signal.getsignal(signal.SIGTSTP)
try:
with util.with_lc_ctype():
curses.wrapper(chunkselector.main)
if chunkselector.initexc is not None:
raise chunkselector.initexc
# ncurses does not restore signal handler for SIGTSTP
finally:
if origsigtstp is not sentinel:
signal.signal(signal.SIGTSTP, origsigtstp)
return chunkselector.opts
def testdecorator(testfn, f):
def u(*args, **kwargs):
return f(testfn, *args, **kwargs)
return u
def testchunkselector(testfn, ui, headerlist, operation=None):
"""
test interface to get selection of chunks, and mark the applied flags
of the chosen chunks.
"""
chunkselector = curseschunkselector(headerlist, ui, operation)
class dummystdscr:
def clear(self):
pass
def refresh(self):
pass
chunkselector.stdscr = dummystdscr()
if testfn and os.path.exists(testfn):
testf = open(testfn, b'r')
# TODO: open in binary mode?
testcommands = [x.rstrip('\n') for x in testf.readlines()]
testf.close()
while True:
if chunkselector.handlekeypressed(testcommands.pop(0), test=True):
break
return chunkselector.opts
_headermessages = { # {operation: text}
b'apply': _(b'Select hunks to apply'),
b'discard': _(b'Select hunks to discard'),
b'keep': _(b'Select hunks to keep'),
None: _(b'Select hunks to record'),
}
class curseschunkselector:
def __init__(self, headerlist, ui, operation=None):
# put the headers into a patch object
self.headerlist = patch(headerlist)
self.ui = ui
self.opts = {}
self.errorstr = None
# list of all chunks
self.chunklist = []
for h in headerlist:
self.chunklist.append(h)
self.chunklist.extend(h.hunks)
# dictionary mapping (fgcolor, bgcolor) pairs to the
# corresponding curses color-pair value.
self.colorpairs = {}
# maps custom nicknames of color-pairs to curses color-pair values
self.colorpairnames = {}
# Honor color setting of ui section. Keep colored setup as
# long as not explicitly set to a falsy value - especially,
# when not set at all. This is to stay most compatible with
# previous (color only) behaviour.
uicolor = stringutil.parsebool(self.ui.config(b'ui', b'color'))
self.usecolor = uicolor is not False
# the currently selected header, hunk, or hunk-line
self.currentselecteditem = self.headerlist[0]
self.lastapplieditem = None
# updated when printing out patch-display -- the 'lines' here are the
# line positions *in the pad*, not on the screen.
self.selecteditemstartline = 0
self.selecteditemendline = None
# define indentation levels
self.headerindentnumchars = 0
self.hunkindentnumchars = 3
self.hunklineindentnumchars = 6
# the first line of the pad to print to the screen
self.firstlineofpadtoprint = 0
# keeps track of the number of lines in the pad
self.numpadlines = None
self.numstatuslines = 1
# keep a running count of the number of lines printed to the pad
# (used for determining when the selected item begins/ends)
self.linesprintedtopadsofar = 0
# stores optional text for a commit comment provided by the user
self.commenttext = b""
# if the last 'toggle all' command caused all changes to be applied
self.waslasttoggleallapplied = True
# affects some ui text
if operation not in _headermessages:
raise error.ProgrammingError(
b'unexpected operation: %s' % operation
)
self.operation = operation
def uparrowevent(self):
"""
try to select the previous item to the current item that has the
most-indented level. for example, if a hunk is selected, try to select
the last hunkline of the hunk prior to the selected hunk. or, if
the first hunkline of a hunk is currently selected, then select the
hunk itself.
"""
currentitem = self.currentselecteditem
nextitem = currentitem.previtem()
if nextitem is None:
# if no parent item (i.e. currentitem is the first header), then
# no change...
nextitem = currentitem
self.currentselecteditem = nextitem
def uparrowshiftevent(self):
"""
select (if possible) the previous item on the same level as the
currently selected item. otherwise, select (if possible) the
parent-item of the currently selected item.
"""
currentitem = self.currentselecteditem
nextitem = currentitem.prevsibling()
# if there's no previous sibling, try choosing the parent
if nextitem is None:
nextitem = currentitem.parentitem()
if nextitem is None:
# if no parent item (i.e. currentitem is the first header), then
# no change...
nextitem = currentitem
self.currentselecteditem = nextitem
self.recenterdisplayedarea()
def downarrowevent(self):
"""
try to select the next item to the current item that has the
most-indented level. for example, if a hunk is selected, select
the first hunkline of the selected hunk. or, if the last hunkline of
a hunk is currently selected, then select the next hunk, if one exists,
or if not, the next header if one exists.
"""
# self.startprintline += 1 #debug
currentitem = self.currentselecteditem
nextitem = currentitem.nextitem()
# if there's no next item, keep the selection as-is
if nextitem is None:
nextitem = currentitem
self.currentselecteditem = nextitem
def downarrowshiftevent(self):
"""
select (if possible) the next item on the same level as the currently
selected item. otherwise, select (if possible) the next item on the
same level as the parent item of the currently selected item.
"""
currentitem = self.currentselecteditem
nextitem = currentitem.nextsibling()
# if there's no next sibling, try choosing the parent's nextsibling
if nextitem is None:
try:
nextitem = currentitem.parentitem().nextsibling()
except AttributeError:
# parentitem returned None, so nextsibling() can't be called
nextitem = None
if nextitem is None:
# if parent has no next sibling, then no change...
nextitem = currentitem
self.currentselecteditem = nextitem
self.recenterdisplayedarea()
def nextsametype(self, test=False):
currentitem = self.currentselecteditem
sametype = lambda item: isinstance(item, type(currentitem))
nextitem = currentitem.nextitem()
while nextitem is not None and not sametype(nextitem):
nextitem = nextitem.nextitem()
if nextitem is None:
nextitem = currentitem
else:
parent = nextitem.parentitem()
if parent is not None and parent.folded:
self.togglefolded(parent)
self.currentselecteditem = nextitem
if not test:
self.recenterdisplayedarea()
def rightarrowevent(self):
"""
select (if possible) the first of this item's child-items.
"""
currentitem = self.currentselecteditem
nextitem = currentitem.firstchild()
# turn off folding if we want to show a child-item
if currentitem.folded:
self.togglefolded(currentitem)
if nextitem is None:
# if no next item on parent-level, then no change...
nextitem = currentitem
self.currentselecteditem = nextitem
def leftarrowevent(self):
"""
if the current item can be folded (i.e. it is an unfolded header or
hunk), then fold it. otherwise try select (if possible) the parent
of this item.
"""
currentitem = self.currentselecteditem
# try to fold the item
if not isinstance(currentitem, uihunkline):
if not currentitem.folded:
self.togglefolded(item=currentitem)
return
# if it can't be folded, try to select the parent item
nextitem = currentitem.parentitem()
if nextitem is None:
# if no item on parent-level, then no change...
nextitem = currentitem
if not nextitem.folded:
self.togglefolded(item=nextitem)
self.currentselecteditem = nextitem
def leftarrowshiftevent(self):
"""
select the header of the current item (or fold current item if the
current item is already a header).
"""
currentitem = self.currentselecteditem
if isinstance(currentitem, uiheader):
if not currentitem.folded:
self.togglefolded(item=currentitem)
return
# select the parent item recursively until we're at a header
while True:
nextitem = currentitem.parentitem()
if nextitem is None:
break
else:
currentitem = nextitem
self.currentselecteditem = currentitem
def updatescroll(self):
"""scroll the screen to fully show the currently-selected"""
selstart = self.selecteditemstartline
selend = self.selecteditemendline
padstart = self.firstlineofpadtoprint
padend = padstart + self.yscreensize - self.numstatuslines - 1
# 'buffered' pad start/end values which scroll with a certain
# top/bottom context margin
padstartbuffered = padstart + 3
padendbuffered = padend - 3
if selend > padendbuffered:
self.scrolllines(selend - padendbuffered)
elif selstart < padstartbuffered:
# negative values scroll in pgup direction
self.scrolllines(selstart - padstartbuffered)
def scrolllines(self, numlines):
"""scroll the screen up (down) by numlines when numlines >0 (<0)."""
self.firstlineofpadtoprint += numlines
if self.firstlineofpadtoprint < 0:
self.firstlineofpadtoprint = 0
if self.firstlineofpadtoprint > self.numpadlines - 1:
self.firstlineofpadtoprint = self.numpadlines - 1
def toggleapply(self, item=None):
"""
toggle the applied flag of the specified item. if no item is specified,
toggle the flag of the currently selected item.
"""
if item is None:
item = self.currentselecteditem
# Only set this when NOT using 'toggleall'
self.lastapplieditem = item
item.applied = not item.applied
if isinstance(item, uiheader):
item.partial = False
if item.applied:
# apply all its hunks
for hnk in item.hunks:
hnk.applied = True
# apply all their hunklines
for hunkline in hnk.changedlines:
hunkline.applied = True
else:
# un-apply all its hunks
for hnk in item.hunks:
hnk.applied = False
hnk.partial = False
# un-apply all their hunklines
for hunkline in hnk.changedlines:
hunkline.applied = False
elif isinstance(item, uihunk):
item.partial = False
# apply all it's hunklines
for hunkline in item.changedlines:
hunkline.applied = item.applied
siblingappliedstatus = [hnk.applied for hnk in item.header.hunks]
allsiblingsapplied = not (False in siblingappliedstatus)
nosiblingsapplied = not (True in siblingappliedstatus)
siblingspartialstatus = [hnk.partial for hnk in item.header.hunks]
somesiblingspartial = True in siblingspartialstatus
# cases where applied or partial should be removed from header
# if no 'sibling' hunks are applied (including this hunk)
if nosiblingsapplied:
if not item.header.special():
item.header.applied = False
item.header.partial = False
else: # some/all parent siblings are applied
item.header.applied = True
item.header.partial = (
somesiblingspartial or not allsiblingsapplied
)
elif isinstance(item, uihunkline):
siblingappliedstatus = [ln.applied for ln in item.hunk.changedlines]
allsiblingsapplied = not (False in siblingappliedstatus)
nosiblingsapplied = not (True in siblingappliedstatus)
# if no 'sibling' lines are applied
if nosiblingsapplied:
item.hunk.applied = False
item.hunk.partial = False
elif allsiblingsapplied:
item.hunk.applied = True
item.hunk.partial = False
else: # some siblings applied
item.hunk.applied = True
item.hunk.partial = True
parentsiblingsapplied = [
hnk.applied for hnk in item.hunk.header.hunks
]
noparentsiblingsapplied = not (True in parentsiblingsapplied)
allparentsiblingsapplied = not (False in parentsiblingsapplied)
parentsiblingspartial = [
hnk.partial for hnk in item.hunk.header.hunks
]
someparentsiblingspartial = True in parentsiblingspartial
# if all parent hunks are not applied, un-apply header
if noparentsiblingsapplied:
if not item.hunk.header.special():
item.hunk.header.applied = False
item.hunk.header.partial = False
# set the applied and partial status of the header if needed
else: # some/all parent siblings are applied
item.hunk.header.applied = True
item.hunk.header.partial = (
someparentsiblingspartial or not allparentsiblingsapplied
)
def toggleall(self):
"""toggle the applied flag of all items."""
if self.waslasttoggleallapplied: # then unapply them this time
for item in self.headerlist:
if item.applied:
self.toggleapply(item)
else:
for item in self.headerlist:
if not item.applied:
self.toggleapply(item)
self.waslasttoggleallapplied = not self.waslasttoggleallapplied
def flipselections(self):
"""
Flip all selections. Every selected line is unselected and vice
versa.
"""
for header in self.headerlist:
for hunk in header.allchildren():
for line in hunk.allchildren():
self.toggleapply(line)
def toggleallbetween(self):
"""toggle applied on or off for all items in range [lastapplied,
current]."""
if (
not self.lastapplieditem
or self.currentselecteditem == self.lastapplieditem
):
# Treat this like a normal 'x'/' '
self.toggleapply()
return
startitem = self.lastapplieditem
enditem = self.currentselecteditem
# Verify that enditem is "after" startitem, otherwise swap them.
for direction in [b'forward', b'reverse']:
nextitem = startitem.nextitem()
while nextitem and nextitem != enditem:
nextitem = nextitem.nextitem()
if nextitem:
break
# Looks like we went the wrong direction :)
startitem, enditem = enditem, startitem
if not nextitem:
# We didn't find a path going either forward or backward? Don't know
# how this can happen, let's not crash though.
return
nextitem = startitem
# Switch all items to be the opposite state of the currently selected
# item. Specifically:
# [ ] startitem
# [x] middleitem
# [ ] enditem <-- currently selected
# This will turn all three on, since the currently selected item is off.
# This does *not* invert each item (i.e. middleitem stays marked/on)
desiredstate = not self.currentselecteditem.applied
while nextitem != enditem.nextitem():
if nextitem.applied != desiredstate:
self.toggleapply(item=nextitem)
nextitem = nextitem.nextitem()
def togglefolded(self, item=None, foldparent=False):
"""toggle folded flag of specified item (defaults to currently
selected)"""
if item is None:
item = self.currentselecteditem
if foldparent or (isinstance(item, uiheader) and item.neverunfolded):
if not isinstance(item, uiheader):
# we need to select the parent item in this case
self.currentselecteditem = item = item.parentitem()
elif item.neverunfolded:
item.neverunfolded = False
# also fold any foldable children of the parent/current item
if isinstance(item, uiheader): # the original or 'new' item
for child in item.allchildren():
child.folded = not item.folded
if isinstance(item, (uiheader, uihunk)):
item.folded = not item.folded
def alignstring(self, instr, window):
"""
add whitespace to the end of a string in order to make it fill
the screen in the x direction. the current cursor position is
taken into account when making this calculation. the string can span
multiple lines.
"""
y, xstart = window.getyx()
width = self.xscreensize
# turn tabs into spaces
instr = instr.expandtabs(4)
strwidth = encoding.colwidth(instr)
numspaces = width - ((strwidth + xstart) % width)
return instr + b" " * numspaces
def printstring(
self,
window,
text,
fgcolor=None,
bgcolor=None,
pair=None,
pairname=None,
attrlist=None,
towin=True,
align=True,
showwhtspc=False,
):
"""
print the string, text, with the specified colors and attributes, to
the specified curses window object.
the foreground and background colors are of the form
curses.color_xxxx, where xxxx is one of: [black, blue, cyan, green,
magenta, red, white, yellow]. if pairname is provided, a color
pair will be looked up in the self.colorpairnames dictionary.
attrlist is a list containing text attributes in the form of
curses.a_xxxx, where xxxx can be: [bold, dim, normal, standout,
underline].
if align == True, whitespace is added to the printed string such that
the string stretches to the right border of the window.
if showwhtspc == True, trailing whitespace of a string is highlighted.
"""
# preprocess the text, converting tabs to spaces
text = text.expandtabs(4)
# strip \n, and convert control characters to ^[char] representation
text = re.sub(
br'[\x00-\x08\x0a-\x1f]',
lambda m: b'^' + pycompat.sysbytes(chr(ord(m.group()) + 64)),
text.strip(b'\n'),
)
if pair is not None:
colorpair = pair
elif pairname is not None:
colorpair = self.colorpairnames[pairname]
else:
if fgcolor is None:
fgcolor = -1
if bgcolor is None:
bgcolor = -1
if (fgcolor, bgcolor) in self.colorpairs:
colorpair = self.colorpairs[(fgcolor, bgcolor)]
else:
colorpair = self.getcolorpair(fgcolor, bgcolor)
# add attributes if possible
if attrlist is None:
attrlist = []
if colorpair < 256:
# then it is safe to apply all attributes
for textattr in attrlist:
colorpair |= textattr
else:
# just apply a select few (safe?) attributes
for textattr in (curses.A_UNDERLINE, curses.A_BOLD):
if textattr in attrlist:
colorpair |= textattr
y, xstart = self.chunkpad.getyx()
t = b"" # variable for counting lines printed
# if requested, show trailing whitespace
if showwhtspc:
origlen = len(text)
text = text.rstrip(b' \n') # tabs have already been expanded
strippedlen = len(text)
numtrailingspaces = origlen - strippedlen
if towin:
window.addstr(encoding.strfromlocal(text), colorpair)
t += text
if showwhtspc:
wscolorpair = colorpair | curses.A_REVERSE
if towin:
for i in range(numtrailingspaces):
window.addch(curses.ACS_CKBOARD, wscolorpair)
t += b" " * numtrailingspaces
if align:
if towin:
extrawhitespace = self.alignstring(b"", window)
window.addstr(extrawhitespace, colorpair)
else:
# need to use t, since the x position hasn't incremented
extrawhitespace = self.alignstring(t, window)
t += extrawhitespace
# is reset to 0 at the beginning of printitem()
linesprinted = (xstart + len(t)) // self.xscreensize
self.linesprintedtopadsofar += linesprinted
return t
def _getstatuslinesegments(self):
"""-> [str]. return segments"""
selected = self.currentselecteditem.applied
spaceselect = _(b'space/enter: select')
spacedeselect = _(b'space/enter: deselect')
# Format the selected label into a place as long as the longer of the
# two possible labels. This may vary by language.
spacelen = max(len(spaceselect), len(spacedeselect))
selectedlabel = b'%-*s' % (
spacelen,
spacedeselect if selected else spaceselect,
)
segments = [
_headermessages[self.operation],
b'-',
_(b'[x]=selected **=collapsed'),
_(b'c: confirm'),
_(b'q: abort'),
_(b'arrow keys: move/expand/collapse'),
selectedlabel,
_(b'?: help'),
]
return segments
def _getstatuslines(self):
"""() -> [str]. return short help used in the top status window"""
if self.errorstr is not None:
lines = [self.errorstr, _(b'Press any key to continue')]
else:
# wrap segments to lines
segments = self._getstatuslinesegments()
width = self.xscreensize
lines = []
lastwidth = width
for s in segments:
w = encoding.colwidth(s)
sep = b' ' * (1 + (s and s[0] not in b'-['))
if lastwidth + w + len(sep) >= width:
lines.append(s)
lastwidth = w
else:
lines[-1] += sep + s
lastwidth += w + len(sep)
if len(lines) != self.numstatuslines:
self.numstatuslines = len(lines)
self.statuswin.resize(self.numstatuslines, self.xscreensize)
return [stringutil.ellipsis(l, self.xscreensize - 1) for l in lines]
def updatescreen(self):
self.statuswin.erase()
self.chunkpad.erase()
printstring = self.printstring
# print out the status lines at the top
try:
for line in self._getstatuslines():
printstring(self.statuswin, line, pairname=b"legend")
self.statuswin.refresh()
except curses.error:
pass
if self.errorstr is not None:
return
# print out the patch in the remaining part of the window
try:
self.printitem()
self.updatescroll()
self.chunkpad.refresh(
self.firstlineofpadtoprint,
0,
self.numstatuslines,
0,
self.yscreensize - self.numstatuslines,
self.xscreensize - 1,
)
except curses.error:
pass
def getstatusprefixstring(self, item):
"""
create a string to prefix a line with which indicates whether 'item'
is applied and/or folded.
"""
# create checkbox string
if item.applied:
if not isinstance(item, uihunkline) and item.partial:
checkbox = b"[~]"
else:
checkbox = b"[x]"
else:
checkbox = b"[ ]"
try:
if item.folded:
checkbox += b"**"
if isinstance(item, uiheader):
# one of "m", "a", or "d" (modified, added, deleted)
filestatus = item.changetype
checkbox += filestatus + b" "
else:
checkbox += b" "
if isinstance(item, uiheader):
# add two more spaces for headers
checkbox += b" "
except AttributeError: # not foldable
checkbox += b" "
return checkbox
def printheader(
self, header, selected=False, towin=True, ignorefolding=False
):
"""
print the header to the pad. if countlines is True, don't print
anything, but just count the number of lines which would be printed.
"""
outstr = b""
text = header.prettystr()
chunkindex = self.chunklist.index(header)
if chunkindex != 0 and not header.folded:
# add separating line before headers
outstr += self.printstring(
self.chunkpad, b'_' * self.xscreensize, towin=towin, align=False
)
# select color-pair based on if the header is selected
colorpair = self.getcolorpair(
name=selected and b"selected" or b"normal", attrlist=[curses.A_BOLD]
)
# print out each line of the chunk, expanding it to screen width
# number of characters to indent lines on this level by
indentnumchars = 0
checkbox = self.getstatusprefixstring(header)
if not header.folded or ignorefolding:
textlist = text.split(b"\n")
linestr = checkbox + textlist[0]
else:
linestr = checkbox + header.filename()
outstr += self.printstring(
self.chunkpad, linestr, pair=colorpair, towin=towin
)
if not header.folded or ignorefolding:
if len(textlist) > 1:
for line in textlist[1:]:
linestr = b" " * (indentnumchars + len(checkbox)) + line
outstr += self.printstring(
self.chunkpad, linestr, pair=colorpair, towin=towin
)
return outstr
def printhunklinesbefore(
self, hunk, selected=False, towin=True, ignorefolding=False
):
"""includes start/end line indicator"""
outstr = b""
# where hunk is in list of siblings
hunkindex = hunk.header.hunks.index(hunk)
if hunkindex != 0:
# add separating line before headers
outstr += self.printstring(
self.chunkpad, b' ' * self.xscreensize, towin=towin, align=False
)
colorpair = self.getcolorpair(
name=selected and b"selected" or b"normal", attrlist=[curses.A_BOLD]
)
# print out from-to line with checkbox
checkbox = self.getstatusprefixstring(hunk)
lineprefix = b" " * self.hunkindentnumchars + checkbox
frtoline = b" " + hunk.getfromtoline().strip(b"\n")
outstr += self.printstring(
self.chunkpad, lineprefix, towin=towin, align=False
) # add uncolored checkbox/indent
outstr += self.printstring(
self.chunkpad, frtoline, pair=colorpair, towin=towin
)
if hunk.folded and not ignorefolding:
# skip remainder of output
return outstr
# print out lines of the chunk preceeding changed-lines
for line in hunk.before:
linestr = (
b" " * (self.hunklineindentnumchars + len(checkbox)) + line
)
outstr += self.printstring(self.chunkpad, linestr, towin=towin)
return outstr
def printhunklinesafter(self, hunk, towin=True, ignorefolding=False):
outstr = b""
if hunk.folded and not ignorefolding:
return outstr
# a bit superfluous, but to avoid hard-coding indent amount
checkbox = self.getstatusprefixstring(hunk)
for line in hunk.after:
linestr = (
b" " * (self.hunklineindentnumchars + len(checkbox)) + line
)
outstr += self.printstring(self.chunkpad, linestr, towin=towin)
return outstr
def printhunkchangedline(self, hunkline, selected=False, towin=True):
outstr = b""
checkbox = self.getstatusprefixstring(hunkline)
linestr = hunkline.prettystr().strip(b"\n")
# select color-pair based on whether line is an addition/removal
if selected:
colorpair = self.getcolorpair(name=b"selected")
elif linestr.startswith(b"+"):
colorpair = self.getcolorpair(name=b"addition")
elif linestr.startswith(b"-"):
colorpair = self.getcolorpair(name=b"deletion")
elif linestr.startswith(b"\\"):
colorpair = self.getcolorpair(name=b"normal")
lineprefix = b" " * self.hunklineindentnumchars + checkbox
outstr += self.printstring(
self.chunkpad, lineprefix, towin=towin, align=False
) # add uncolored checkbox/indent
outstr += self.printstring(
self.chunkpad, linestr, pair=colorpair, towin=towin, showwhtspc=True
)
return outstr
def printitem(
self, item=None, ignorefolding=False, recursechildren=True, towin=True
):
"""
use __printitem() to print the the specified item.applied.
if item is not specified, then print the entire patch.
(hiding folded elements, etc. -- see __printitem() docstring)
"""
if item is None:
item = self.headerlist
if recursechildren:
self.linesprintedtopadsofar = 0
outstr = []
self.__printitem(
item, ignorefolding, recursechildren, outstr, towin=towin
)
return b''.join(outstr)
def outofdisplayedarea(self):
y, _ = self.chunkpad.getyx() # cursor location
# * 2 here works but an optimization would be the max number of
# consecutive non selectable lines
# i.e the max number of context line for any hunk in the patch
miny = min(0, self.firstlineofpadtoprint - self.yscreensize)
maxy = self.firstlineofpadtoprint + self.yscreensize * 2
return y < miny or y > maxy
def handleselection(self, item, recursechildren):
selected = item is self.currentselecteditem
if selected and recursechildren:
# assumes line numbering starting from line 0
self.selecteditemstartline = self.linesprintedtopadsofar
selecteditemlines = self.getnumlinesdisplayed(
item, recursechildren=False
)
self.selecteditemendline = (
self.selecteditemstartline + selecteditemlines - 1
)
return selected
def __printitem(
self, item, ignorefolding, recursechildren, outstr, towin=True
):
"""
recursive method for printing out patch/header/hunk/hunk-line data to
screen. also returns a string with all of the content of the displayed
patch (not including coloring, etc.).
if ignorefolding is True, then folded items are printed out.
if recursechildren is False, then only print the item without its
child items.
"""
if towin and self.outofdisplayedarea():
return
selected = self.handleselection(item, recursechildren)
# patch object is a list of headers
if isinstance(item, patch):
if recursechildren:
for hdr in item:
self.__printitem(
hdr, ignorefolding, recursechildren, outstr, towin
)
# todo: eliminate all isinstance() calls
if isinstance(item, uiheader):
outstr.append(
self.printheader(
item, selected, towin=towin, ignorefolding=ignorefolding
)
)
if recursechildren:
for hnk in item.hunks:
self.__printitem(
hnk, ignorefolding, recursechildren, outstr, towin
)
elif isinstance(item, uihunk) and (
(not item.header.folded) or ignorefolding
):
# print the hunk data which comes before the changed-lines
outstr.append(
self.printhunklinesbefore(
item, selected, towin=towin, ignorefolding=ignorefolding
)
)
if recursechildren:
for l in item.changedlines:
self.__printitem(
l, ignorefolding, recursechildren, outstr, towin
)
outstr.append(
self.printhunklinesafter(
item, towin=towin, ignorefolding=ignorefolding
)
)
elif isinstance(item, uihunkline) and (
(not item.hunk.folded) or ignorefolding
):
outstr.append(
self.printhunkchangedline(item, selected, towin=towin)
)
return outstr
def getnumlinesdisplayed(
self, item=None, ignorefolding=False, recursechildren=True
):
"""
return the number of lines which would be displayed if the item were
to be printed to the display. the item will not be printed to the
display (pad).
if no item is given, assume the entire patch.
if ignorefolding is True, folded items will be unfolded when counting
the number of lines.
"""
# temporarily disable printing to windows by printstring
patchdisplaystring = self.printitem(
item, ignorefolding, recursechildren, towin=False
)
numlines = len(patchdisplaystring) // self.xscreensize
return numlines
def sigwinchhandler(self, n, frame):
"""handle window resizing"""
try:
curses.endwin()
self.xscreensize, self.yscreensize = scmutil.termsize(self.ui)
self.statuswin.resize(self.numstatuslines, self.xscreensize)
self.numpadlines = self.getnumlinesdisplayed(ignorefolding=True) + 1
self.chunkpad = curses.newpad(self.numpadlines, self.xscreensize)
except curses.error:
pass
def getcolorpair(
self, fgcolor=None, bgcolor=None, name=None, attrlist=None
):
"""
get a curses color pair, adding it to self.colorpairs if it is not
already defined. an optional string, name, can be passed as a shortcut
for referring to the color-pair. by default, if no arguments are
specified, the white foreground / black background color-pair is
returned.
it is expected that this function will be used exclusively for
initializing color pairs, and not curses.init_pair().
attrlist is used to 'flavor' the returned color-pair. this information
is not stored in self.colorpairs. it contains attribute values like
curses.A_BOLD.
"""
if (name is not None) and name in self.colorpairnames:
# then get the associated color pair and return it
colorpair = self.colorpairnames[name]
else:
if fgcolor is None:
fgcolor = -1
if bgcolor is None:
bgcolor = -1
if (fgcolor, bgcolor) in self.colorpairs:
colorpair = self.colorpairs[(fgcolor, bgcolor)]
else:
pairindex = len(self.colorpairs) + 1
if self.usecolor:
curses.init_pair(pairindex, fgcolor, bgcolor)
colorpair = self.colorpairs[
(fgcolor, bgcolor)
] = curses.color_pair(pairindex)
if name is not None:
self.colorpairnames[name] = curses.color_pair(pairindex)
else:
cval = 0
if name is not None:
if name == b'selected':
cval = curses.A_REVERSE
self.colorpairnames[name] = cval
colorpair = self.colorpairs[(fgcolor, bgcolor)] = cval
# add attributes if possible
if attrlist is None:
attrlist = []
if colorpair < 256:
# then it is safe to apply all attributes
for textattr in attrlist:
colorpair |= textattr
else:
# just apply a select few (safe?) attributes
for textattrib in (curses.A_UNDERLINE, curses.A_BOLD):
if textattrib in attrlist:
colorpair |= textattrib
return colorpair
def initcolorpair(self, *args, **kwargs):
"""same as getcolorpair."""
self.getcolorpair(*args, **kwargs)
def helpwindow(self):
"""print a help window to the screen. exit after any keypress."""
helptext = _(
b""" [press any key to return to the patch-display]
The curses hunk selector allows you to interactively choose among the
changes you have made, and confirm only those changes you select for
further processing by the command you are running (such as commit,
shelve, or revert). After confirming the selected changes, the
unselected changes are still present in your working copy, so you can
use the hunk selector multiple times to split large changes into
smaller changesets. the following are valid keystrokes:
x [space] : (un-)select item ([~]/[x] = partly/fully applied)
[enter] : (un-)select item and go to next item of same type
A : (un-)select all items
X : (un-)select all items between current and most-recent
up/down-arrow [k/j] : go to previous/next unfolded item
pgup/pgdn [K/J] : go to previous/next item of same type
right/left-arrow [l/h] : go to child item / parent item
shift-left-arrow [H] : go to parent header / fold selected header
g : go to the top
G : go to the bottom
f : fold / unfold item, hiding/revealing its children
F : fold / unfold parent item and all of its ancestors
ctrl-l : scroll the selected line to the top of the screen
m : edit / resume editing the commit message
e : edit the currently selected hunk
a : toggle all selections
c : confirm selected changes
r : review/edit and confirm selected changes
q : quit without confirming (no changes will be made)
? : help (what you're currently reading)"""
)
helpwin = curses.newwin(self.yscreensize, 0, 0, 0)
helplines = helptext.split(b"\n")
helplines = helplines + [b" "] * (
self.yscreensize - self.numstatuslines - len(helplines) - 1
)
try:
for line in helplines:
self.printstring(helpwin, line, pairname=b"legend")
except curses.error:
pass
helpwin.refresh()
try:
with self.ui.timeblockedsection(b'crecord'):
helpwin.getkey()
except curses.error:
pass
def commitMessageWindow(self):
"""Create a temporary commit message editing window on the screen."""
curses.raw()
curses.def_prog_mode()
curses.endwin()
self.commenttext = self.ui.edit(self.commenttext, self.ui.username())
curses.cbreak()
self.stdscr.refresh()
self.stdscr.keypad(1) # allow arrow-keys to continue to function
def handlefirstlineevent(self):
"""
Handle 'g' to navigate to the top most file in the ncurses window.
"""
self.currentselecteditem = self.headerlist[0]
currentitem = self.currentselecteditem
# select the parent item recursively until we're at a header
while True:
nextitem = currentitem.parentitem()
if nextitem is None:
break
else:
currentitem = nextitem
self.currentselecteditem = currentitem
def handlelastlineevent(self):
"""
Handle 'G' to navigate to the bottom most file/hunk/line depending
on the whether the fold is active or not.
If the bottom most file is folded, it navigates to that file and
stops there. If the bottom most file is unfolded, it navigates to
the bottom most hunk in that file and stops there. If the bottom most
hunk is unfolded, it navigates to the bottom most line in that hunk.
"""
currentitem = self.currentselecteditem
nextitem = currentitem.nextitem()
# select the child item recursively until we're at a footer
while nextitem is not None:
nextitem = currentitem.nextitem()
if nextitem is None:
break
else:
currentitem = nextitem
self.currentselecteditem = currentitem
self.recenterdisplayedarea()
def confirmationwindow(self, windowtext):
"""display an informational window, then wait for and return a
keypress."""
confirmwin = curses.newwin(self.yscreensize, 0, 0, 0)
try:
lines = windowtext.split(b"\n")
for line in lines:
self.printstring(confirmwin, line, pairname=b"selected")
except curses.error:
pass
self.stdscr.refresh()
confirmwin.refresh()
try:
with self.ui.timeblockedsection(b'crecord'):
response = chr(self.stdscr.getch())
except ValueError:
response = None
return response
def reviewcommit(self):
"""ask for 'y' to be pressed to confirm selected. return True if
confirmed."""
confirmtext = _(
b"""If you answer yes to the following, your currently chosen patch chunks
will be loaded into an editor. To modify the patch, make the changes in your
editor and save. To accept the current patch as-is, close the editor without
saving.
note: don't add/remove lines unless you also modify the range information.
failing to follow this rule will result in the commit aborting.
are you sure you want to review/edit and confirm the selected changes [yn]?
"""
)
with self.ui.timeblockedsection(b'crecord'):
response = self.confirmationwindow(confirmtext)
if response is None:
response = "n"
if response.lower().startswith("y"):
return True
else:
return False
def recenterdisplayedarea(self):
"""
once we scrolled with pg up pg down we can be pointing outside of the
display zone. we print the patch with towin=False to compute the
location of the selected item even though it is outside of the displayed
zone and then update the scroll.
"""
self.printitem(towin=False)
self.updatescroll()
def toggleedit(self, item=None, test=False):
"""
edit the currently selected chunk
"""
def updateui(self):
self.numpadlines = self.getnumlinesdisplayed(ignorefolding=True) + 1
self.chunkpad = curses.newpad(self.numpadlines, self.xscreensize)
self.updatescroll()
self.stdscr.refresh()
self.statuswin.refresh()
self.stdscr.keypad(1)
def editpatchwitheditor(self, chunk):
if chunk is None:
self.ui.write(_(b'cannot edit patch for whole file'))
self.ui.write(b"\n")
return None
if chunk.header.binary():
self.ui.write(_(b'cannot edit patch for binary file'))
self.ui.write(b"\n")
return None
# write the initial patch
patch = stringio()
patch.write(diffhelptext + hunkhelptext)
chunk.header.write(patch)
chunk.write(patch)
# start the editor and wait for it to complete
try:
patch = self.ui.edit(patch.getvalue(), b"", action=b"diff")
except error.Abort as exc:
self.errorstr = exc.message
return None
finally:
self.stdscr.clear()
self.stdscr.refresh()
# remove comment lines
patch = [
line + b'\n'
for line in patch.splitlines()
if not line.startswith(b'#')
]
return patchmod.parsepatch(patch)
if item is None:
item = self.currentselecteditem
if isinstance(item, uiheader):
return
if isinstance(item, uihunkline):
item = item.parentitem()
if not isinstance(item, uihunk):
return
# To go back to that hunk or its replacement at the end of the edit
itemindex = item.parentitem().hunks.index(item)
beforeadded, beforeremoved = item.added, item.removed
newpatches = editpatchwitheditor(self, item)
if newpatches is None:
if not test:
updateui(self)
return
header = item.header
editedhunkindex = header.hunks.index(item)
hunksbefore = header.hunks[:editedhunkindex]
hunksafter = header.hunks[editedhunkindex + 1 :]
newpatchheader = newpatches[0]
newhunks = [uihunk(h, header) for h in newpatchheader.hunks]
newadded = sum([h.added for h in newhunks])
newremoved = sum([h.removed for h in newhunks])
offset = (newadded - beforeadded) - (newremoved - beforeremoved)
for h in hunksafter:
h.toline += offset
for h in newhunks:
h.folded = False
header.hunks = hunksbefore + newhunks + hunksafter
if self.emptypatch():
header.hunks = hunksbefore + [item] + hunksafter
self.currentselecteditem = header
if len(header.hunks) > itemindex:
self.currentselecteditem = header.hunks[itemindex]
if not test:
updateui(self)
def emptypatch(self):
item = self.headerlist
if not item:
return True
for header in item:
if header.hunks:
return False
return True
def handlekeypressed(self, keypressed, test=False):
"""
Perform actions based on pressed keys.
Return true to exit the main loop.
"""
if keypressed in ["k", "KEY_UP"]:
self.uparrowevent()
elif keypressed in ["K", "KEY_PPAGE"]:
self.uparrowshiftevent()
elif keypressed in ["j", "KEY_DOWN"]:
self.downarrowevent()
elif keypressed in ["J", "KEY_NPAGE"]:
self.downarrowshiftevent()
elif keypressed in ["l", "KEY_RIGHT"]:
self.rightarrowevent()
elif keypressed in ["h", "KEY_LEFT"]:
self.leftarrowevent()
elif keypressed in ["H", "KEY_SLEFT"]:
self.leftarrowshiftevent()
elif keypressed in ["q"]:
raise error.CanceledError(_(b'user quit'))
elif keypressed in ['a']:
self.flipselections()
elif keypressed in ["c"]:
return True
elif keypressed in ["r"]:
if self.reviewcommit():
self.opts[b'review'] = True
return True
elif test and keypressed in ["R"]:
self.opts[b'review'] = True
return True
elif keypressed in [" ", "x"]:
self.toggleapply()
elif keypressed in ["\n", "KEY_ENTER"]:
self.toggleapply()
self.nextsametype(test=test)
elif keypressed in ["X"]:
self.toggleallbetween()
elif keypressed in ["A"]:
self.toggleall()
elif keypressed in ["e"]:
self.toggleedit(test=test)
elif keypressed in ["f"]:
self.togglefolded()
elif keypressed in ["F"]:
self.togglefolded(foldparent=True)
elif keypressed in ["m"]:
self.commitMessageWindow()
elif keypressed in ["g", "KEY_HOME"]:
self.handlefirstlineevent()
elif keypressed in ["G", "KEY_END"]:
self.handlelastlineevent()
elif keypressed in ["?"]:
self.helpwindow()
self.stdscr.clear()
self.stdscr.refresh()
elif keypressed in [curses.ascii.ctrl("L")]:
# scroll the current line to the top of the screen, and redraw
# everything
self.scrolllines(self.selecteditemstartline)
self.stdscr.clear()
self.stdscr.refresh()
def main(self, stdscr):
"""
method to be wrapped by curses.wrapper() for selecting chunks.
"""
origsigwinch = sentinel = object()
if util.safehasattr(signal, b'SIGWINCH'):
origsigwinch = signal.signal(signal.SIGWINCH, self.sigwinchhandler)
try:
return self._main(stdscr)
finally:
if origsigwinch is not sentinel:
signal.signal(signal.SIGWINCH, origsigwinch)
def _main(self, stdscr):
self.stdscr = stdscr
# error during initialization, cannot be printed in the curses
# interface, it should be printed by the calling code
self.initexc = None
self.yscreensize, self.xscreensize = self.stdscr.getmaxyx()
curses.start_color()
try:
curses.use_default_colors()
except curses.error:
self.usecolor = False
# In some situations we may have some cruft left on the "alternate
# screen" from another program (or previous iterations of ourself), and
# we won't clear it if the scroll region is small enough to comfortably
# fit on the terminal.
self.stdscr.clear()
# don't display the cursor
try:
curses.curs_set(0)
except curses.error:
pass
# available colors: black, blue, cyan, green, magenta, white, yellow
# init_pair(color_id, foreground_color, background_color)
self.initcolorpair(None, None, name=b"normal")
self.initcolorpair(
curses.COLOR_WHITE, curses.COLOR_MAGENTA, name=b"selected"
)
self.initcolorpair(curses.COLOR_RED, None, name=b"deletion")
self.initcolorpair(curses.COLOR_GREEN, None, name=b"addition")
self.initcolorpair(
curses.COLOR_WHITE, curses.COLOR_BLUE, name=b"legend"
)
# newwin([height, width,] begin_y, begin_x)
self.statuswin = curses.newwin(self.numstatuslines, 0, 0, 0)
self.statuswin.keypad(1) # interpret arrow-key, etc. esc sequences
# figure out how much space to allocate for the chunk-pad which is
# used for displaying the patch
# stupid hack to prevent getnumlinesdisplayed from failing
self.chunkpad = curses.newpad(1, self.xscreensize)
# add 1 so to account for last line text reaching end of line
self.numpadlines = self.getnumlinesdisplayed(ignorefolding=True) + 1
try:
self.chunkpad = curses.newpad(self.numpadlines, self.xscreensize)
except curses.error:
self.initexc = fallbackerror(
_(b'this diff is too large to be displayed')
)
return
# initialize selecteditemendline (initial start-line is 0)
self.selecteditemendline = self.getnumlinesdisplayed(
self.currentselecteditem, recursechildren=False
)
while True:
self.updatescreen()
try:
with self.ui.timeblockedsection(b'crecord'):
keypressed = self.statuswin.getkey()
if self.errorstr is not None:
self.errorstr = None
continue
except curses.error:
keypressed = b"foobar"
if self.handlekeypressed(keypressed):
break
if self.commenttext != b"":
whitespaceremoved = re.sub(
br"(?m)^\s.*(\n|$)", b"", self.commenttext
)
if whitespaceremoved != b"":
self.opts[b'message'] = self.commenttext