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Get rid of the gundo plugin

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commit b7d29912169ded4ec0b95ec8b31c22e5102d60ca 1 parent b0f7a6d
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  1. +0 −128 bundle/gundo/doc/gundo.txt
  2. +0 −799 bundle/gundo/plugin/gundo.vim
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128 bundle/gundo/doc/gundo.txt
@@ -1,128 +0,0 @@
-*gundo.txt* Graph your undo tree so you can actually USE it.
-
-
- CURRENT STATUS: BETA
-
- IT MIGHT EAT YOUR DATA
-
- SERIOUSLY: IF YOU USE THIS PLUGIN, LOSE DATA AND COMPLAIN ABOUT IT
- I AM GOING TO MAKE FUN OF YOU ON TWITTER
-
-
-Making's Vim's undo tree usable by humans.
-
-==============================================================================
-1. Intro *Gundo-plugin* *Gundo*
-
-You know that Vim lets you undo changes like any text editor. What you might
-not know is that it doesn't just keep a list of your changes -- it keeps
-a goddamed |:undo-tree| of them.
-
-Say you make a change (call it X), undo that change, and then make another
-change (call it Y). With most editors, change X is now gone forever. With Vim
-you can get it back.
-
-The problem is that trying to do this in the real world is painful. Vim gives
-you an |:undolist| command that shows you the leaves of the tree. Good luck
-finding the change you want in that list.
-
-Gundo is a plugin to make browsing this ridiculously powerful undo tree less
-painful.
-
-==============================================================================
-2. Usage *GundoUsage*
-
-We'll get to the technical details later, but if you're a human the first
-thing you need to do is add a mapping to your |:vimrc| to toggle the undo
-graph: >
-
- nnoremap <F5> :GundoToggle<CR>
-
-Change the mapped key to suit your taste. We'll stick with F5 because that's
-what the author uses.
-
-Now you can press F5 to toggle the undo graph and preview pane, which will
-look something like this: >
-
- Undo graph File
- +-----------------------------------+------------------------------------+
- | " Gundo for something.txt [1] |one |
- | " j/k - move between undo states |two |
- | " <cr> - revert to that state |three |
- | |five |
- | @ [5] 3 hours ago | |
- | | | |
- | | o [4] 4 hours ago | |
- | | | | |
- | o | [3] 4 hours ago | |
- | | | | |
- | o | [2] 4 hours ago | |
- | |/ | |
- | o [1] 4 hours ago | |
- | | | |
- | o [0] Original | |
- +-----------------------------------+ |
- | --- 3 2010-10-12 06:27:35 PM | |
- | +++ 5 2010-10-12 07:38:37 PM | |
- | @@ -1,3 +1,4 | |
- | one | |
- | two | |
- | three | |
- | +five | |
- +-----------------------------------+------------------------------------+
- Preview pane
-
-Your current position in the undo tree is marked with an '@' character. Other
-nodes are marked with an 'o' character.
-
-When you toggle open the graph Gundo will put your cursor on your current
-position in the tree. You can move up and down the graph with the j and
-k keys.
-
-You can move to the top of the graph (the newest state) with gg and to the
-bottom of the graph (the oldest state) with G.
-
-As you move between undo states the preview pane will show you a unified diff
-of the change that state made.
-
-Pressing enter on a state will revert the contents of the file to match that
-state.
-
-Pressing P while on a state will initiate "play to" mode targeted at that
-state. This will replay all the changes between your current state and the
-target, with a slight pause after each change. It's mostly useless, but can be
-fun to watch and see where your editing lags -- that might be a good place to
-define a new mapping to speed up your editing.
-
-Pressing q while in the undo graph will close it. You can also just press your
-toggle mapping key.
-
-==============================================================================
-3. License *GundoLicense*
-
-GPLv2+. Look it up.
-
-==============================================================================
-4. Bugs *GundoBugs*
-
-If you find a bug please post it on the issue tracker:
-http://bitbucket.org/sjl/gundo.vim/issues?status=new&status=open
-
-==============================================================================
-5. Contributing *GundoContributing*
-
-Think you can make this plugin better? Awesome. Fork it on BitBucket or GitHub
-and send a pull request.
-
-BitBucket: http://bitbucket.org/sjl/gundo.vim/
-GitHub: http://github.com/sjl/gundo.vim/
-
-==============================================================================
-6. Credits *GundoCredits*
-
-The graphing code was all taken from Mercurial, hence the GPLv2+ license.
-
-The plugin was heavily inspired by histwin.vim, and the code for scratch.vim
-helped the author get started.
-
-==============================================================================
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799 bundle/gundo/plugin/gundo.vim
@@ -1,799 +0,0 @@
-" ============================================================================
-" File: gundo.vim
-" Description: vim global plugin to visualize your undo tree
-" Maintainer: Steve Losh <steve@stevelosh.com>
-" License: GPLv2+ -- look it up.
-" Notes: Much of this code was thiefed from Mercurial, and the rest was
-" heavily inspired by scratch.vim and histwin.vim.
-"
-" ============================================================================
-
-" Check for Python before trying to load
-if !has("python")
- finish
-endif
-
-"{{{ Init
-"if exists('loaded_gundo') || &cp
- "finish
-"endif
-
-"let loaded_gundo = 1
-
-if !exists('g:gundo_width')
- let g:gundo_width = 45
-endif
-"}}}
-
-"{{{ Movement Mappings
-function! s:GundoMove(direction)
- let start_line = getline('.')
-
- " If we're in between two nodes we move by one to get back on track.
- if stridx(start_line, '[') == -1
- let distance = 1
- else
- let distance = 2
- endif
-
- let target_n = line('.') + (distance * a:direction)
-
- " Bound the movement to the graph.
- if target_n <= 4
- call cursor(5, 0)
- else
- call cursor(target_n, 0)
- endif
-
- let line = getline('.')
-
- " Move to the node, whether it's an @ or an o
- let idx1 = stridx(line, '@')
- let idx2 = stridx(line, 'o')
- if idx1 != -1
- call cursor(0, idx1 + 1)
- else
- call cursor(0, idx2 + 1)
- endif
-
- let target_line = matchstr(getline("."), '\v\[[0-9]+\]')
- let target_num = matchstr(target_line, '\v[0-9]+')
- call s:GundoRenderPreview(target_num)
-endfunction
-"}}}
-
-"{{{ Buffer/Window Management
-function! s:GundoResizeBuffers(backto)
- " This sucks and doesn't work. TODO: Fix it.
- exe bufwinnr(bufnr('__Gundo__')) . "wincmd w"
- exe "vertical resize " . g:gundo_width
- exe bufwinnr(bufnr('__Gundo_Preview__')) . "wincmd w"
- exe "resize " . 15
- exe a:backto . "wincmd w"
-endfunction
-
-function! s:GundoOpenBuffer()
- let existing_gundo_buffer = bufnr("__Gundo__")
-
- if existing_gundo_buffer == -1
- exe bufwinnr(bufnr('__Gundo_Preview__')) . "wincmd w"
- exe "new __Gundo__"
- call s:GundoResizeBuffers(winnr())
- nnoremap <script> <silent> <buffer> <CR> :call <sid>GundoRevert()<CR>
- nnoremap <script> <silent> <buffer> j :call <sid>GundoMove(1)<CR>
- nnoremap <script> <silent> <buffer> k :call <sid>GundoMove(-1)<CR>
- nnoremap <script> <silent> <buffer> gg gg:call <sid>GundoMove(1)<CR>
- nnoremap <script> <silent> <buffer> P :call <sid>GundoPlayTo()<CR>
- nnoremap <script> <silent> <buffer> q :call <sid>GundoToggle()<CR>
- else
- let existing_gundo_window = bufwinnr(existing_gundo_buffer)
-
- if existing_gundo_window != -1
- if winnr() != existing_gundo_window
- exe existing_gundo_window . "wincmd w"
- endif
- else
- exe bufwinnr(bufnr('__Gundo_Preview__')) . "wincmd w"
- exe "split +buffer" . existing_gundo_buffer
- call s:GundoResizeBuffers(winnr())
- endif
- endif
-endfunction
-
-function! s:GundoToggle()
- if expand('%') == "__Gundo__"
- quit
- if bufwinnr(bufnr('__Gundo_Preview__')) != -1
- exe bufwinnr(bufnr('__Gundo_Preview__')) . "wincmd w"
- quit
- endif
- exe bufwinnr(g:gundo_target_n) . "wincmd w"
- else
- if expand('%') != "__Gundo_Preview__"
- " Record the previous buffer number.
- "
- " This sucks because we're not getting the window number, and there
- " may be more than one window viewing the same buffer, so we might
- " go back to the wrong one.
- "
- " Unfortunately window numbers change as we open more windows.
- "
- " TODO: Figure out how to fix this.
- let g:gundo_target_n = bufnr('')
- let g:gundo_target_f = @%
- endif
-
- call s:GundoOpenPreview()
- exe bufwinnr(g:gundo_target_n) . "wincmd w"
- GundoRender
-
- " TODO: Move these lines into RenderPreview
- let target_line = matchstr(getline("."), '\v\[[0-9]+\]')
- let target_num = matchstr(target_line, '\v[0-9]+')
- call s:GundoRenderPreview(target_num)
- endif
-endfunction
-
-function! s:GundoMarkPreviewBuffer()
- setlocal buftype=nofile
- setlocal bufhidden=hide
- setlocal noswapfile
- setlocal buflisted
- setlocal nomodifiable
- setlocal filetype=diff
- setlocal nonumber
- setlocal norelativenumber
- setlocal nowrap
- setlocal foldlevel=20
- " TODO: Set foldmethod?
-endfunction
-
-function! s:GundoMarkBuffer()
- setlocal buftype=nofile
- setlocal bufhidden=hide
- setlocal noswapfile
- setlocal buflisted
- setlocal nomodifiable
- setlocal filetype=gundo
- setlocal nolist
- setlocal nonumber
- setlocal norelativenumber
- setlocal nowrap
- call s:GundoSyntax()
-endfunction
-
-function! s:GundoSyntax()
- let b:current_syntax = 'gundo'
-
- syn match GundoCurrentLocation '@'
- syn match GundoHelp '\v^".*$'
- syn match GundoNumberField '\v\[[0-9]+\]'
- syn match GundoNumber '\v[0-9]+' contained containedin=GundoNumberField
-
- hi def link GundoCurrentLocation Keyword
- hi def link GundoHelp Comment
- hi def link GundoNumberField Comment
- hi def link GundoNumber Identifier
-endfunction
-
-function! s:GundoOpenPreview()
- let existing_preview_buffer = bufnr("__Gundo_Preview__")
-
- if existing_preview_buffer == -1
- exe "vnew __Gundo_Preview__"
- wincmd H
- else
- let existing_preview_window = bufwinnr(existing_preview_buffer)
-
- if existing_preview_window != -1
- if winnr() != existing_preview_window
- exe existing_preview_window . "wincmd w"
- endif
- else
- exe "vsplit +buffer" . existing_preview_buffer
- wincmd H
- endif
- endif
-endfunction
-"}}}
-
-"{{{ Mercurial's Graphlog Code
-python << ENDPYTHON
-def asciiedges(seen, rev, parents):
- """adds edge info to changelog DAG walk suitable for ascii()"""
- if rev not in seen:
- seen.append(rev)
- nodeidx = seen.index(rev)
-
- knownparents = []
- newparents = []
- for parent in parents:
- if parent in seen:
- knownparents.append(parent)
- else:
- newparents.append(parent)
-
- ncols = len(seen)
- seen[nodeidx:nodeidx + 1] = newparents
- edges = [(nodeidx, seen.index(p)) for p in knownparents]
-
- if len(newparents) > 0:
- edges.append((nodeidx, nodeidx))
- if len(newparents) > 1:
- edges.append((nodeidx, nodeidx + 1))
-
- nmorecols = len(seen) - ncols
- return nodeidx, edges, ncols, nmorecols
-
-def get_nodeline_edges_tail(
- node_index, p_node_index, n_columns, n_columns_diff, p_diff, fix_tail):
- if fix_tail and n_columns_diff == p_diff and n_columns_diff != 0:
- # Still going in the same non-vertical direction.
- if n_columns_diff == -1:
- start = max(node_index + 1, p_node_index)
- tail = ["|", " "] * (start - node_index - 1)
- tail.extend(["/", " "] * (n_columns - start))
- return tail
- else:
- return ["\\", " "] * (n_columns - node_index - 1)
- else:
- return ["|", " "] * (n_columns - node_index - 1)
-
-def draw_edges(edges, nodeline, interline):
- for (start, end) in edges:
- if start == end + 1:
- interline[2 * end + 1] = "/"
- elif start == end - 1:
- interline[2 * start + 1] = "\\"
- elif start == end:
- interline[2 * start] = "|"
- else:
- nodeline[2 * end] = "+"
- if start > end:
- (start, end) = (end, start)
- for i in range(2 * start + 1, 2 * end):
- if nodeline[i] != "+":
- nodeline[i] = "-"
-
-def ascii(buf, state, type, char, text, coldata):
- """prints an ASCII graph of the DAG
-
- takes the following arguments (one call per node in the graph):
-
- - buffer to write to
- - Somewhere to keep the needed state in (init to asciistate())
- - Column of the current node in the set of ongoing edges.
- - Type indicator of node data == ASCIIDATA.
- - Payload: (char, lines):
- - Character to use as node's symbol.
- - List of lines to display as the node's text.
- - Edges; a list of (col, next_col) indicating the edges between
- the current node and its parents.
- - Number of columns (ongoing edges) in the current revision.
- - The difference between the number of columns (ongoing edges)
- in the next revision and the number of columns (ongoing edges)
- in the current revision. That is: -1 means one column removed;
- 0 means no columns added or removed; 1 means one column added.
- """
-
- idx, edges, ncols, coldiff = coldata
- assert -2 < coldiff < 2
- if coldiff == -1:
- # Transform
- #
- # | | | | | |
- # o | | into o---+
- # |X / |/ /
- # | | | |
- fix_long_right_edges(edges)
-
- # add_padding_line says whether to rewrite
- #
- # | | | | | | | |
- # | o---+ into | o---+
- # | / / | | | # <--- padding line
- # o | | | / /
- # o | |
- add_padding_line = (len(text) > 2 and coldiff == -1 and
- [x for (x, y) in edges if x + 1 < y])
-
- # fix_nodeline_tail says whether to rewrite
- #
- # | | o | | | | o | |
- # | | |/ / | | |/ /
- # | o | | into | o / / # <--- fixed nodeline tail
- # | |/ / | |/ /
- # o | | o | |
- fix_nodeline_tail = len(text) <= 2 and not add_padding_line
-
- # nodeline is the line containing the node character (typically o)
- nodeline = ["|", " "] * idx
- nodeline.extend([char, " "])
-
- nodeline.extend(
- get_nodeline_edges_tail(idx, state[1], ncols, coldiff,
- state[0], fix_nodeline_tail))
-
- # shift_interline is the line containing the non-vertical
- # edges between this entry and the next
- shift_interline = ["|", " "] * idx
- if coldiff == -1:
- n_spaces = 1
- edge_ch = "/"
- elif coldiff == 0:
- n_spaces = 2
- edge_ch = "|"
- else:
- n_spaces = 3
- edge_ch = "\\"
- shift_interline.extend(n_spaces * [" "])
- shift_interline.extend([edge_ch, " "] * (ncols - idx - 1))
-
- # draw edges from the current node to its parents
- draw_edges(edges, nodeline, shift_interline)
-
- # lines is the list of all graph lines to print
- lines = [nodeline]
- if add_padding_line:
- lines.append(get_padding_line(idx, ncols, edges))
- lines.append(shift_interline)
-
- # make sure that there are as many graph lines as there are
- # log strings
- while len(text) < len(lines):
- text.append("")
- if len(lines) < len(text):
- extra_interline = ["|", " "] * (ncols + coldiff)
- while len(lines) < len(text):
- lines.append(extra_interline)
-
- # print lines
- indentation_level = max(ncols, ncols + coldiff)
- for (line, logstr) in zip(lines, text):
- ln = "%-*s %s" % (2 * indentation_level, "".join(line), logstr)
- buf.write(ln.rstrip() + '\n')
-
- # ... and start over
- state[0] = coldiff
- state[1] = idx
-
-def fix_long_right_edges(edges):
- for (i, (start, end)) in enumerate(edges):
- if end > start:
- edges[i] = (start, end + 1)
-
-def ascii(buf, state, type, char, text, coldata):
- """prints an ASCII graph of the DAG
-
- takes the following arguments (one call per node in the graph):
-
- - Somewhere to keep the needed state in (init to asciistate())
- - Column of the current node in the set of ongoing edges.
- - Type indicator of node data == ASCIIDATA.
- - Payload: (char, lines):
- - Character to use as node's symbol.
- - List of lines to display as the node's text.
- - Edges; a list of (col, next_col) indicating the edges between
- the current node and its parents.
- - Number of columns (ongoing edges) in the current revision.
- - The difference between the number of columns (ongoing edges)
- in the next revision and the number of columns (ongoing edges)
- in the current revision. That is: -1 means one column removed;
- 0 means no columns added or removed; 1 means one column added.
- """
-
- idx, edges, ncols, coldiff = coldata
- assert -2 < coldiff < 2
- if coldiff == -1:
- # Transform
- #
- # | | | | | |
- # o | | into o---+
- # |X / |/ /
- # | | | |
- fix_long_right_edges(edges)
-
- # add_padding_line says whether to rewrite
- #
- # | | | | | | | |
- # | o---+ into | o---+
- # | / / | | | # <--- padding line
- # o | | | / /
- # o | |
- add_padding_line = (len(text) > 2 and coldiff == -1 and
- [x for (x, y) in edges if x + 1 < y])
-
- # fix_nodeline_tail says whether to rewrite
- #
- # | | o | | | | o | |
- # | | |/ / | | |/ /
- # | o | | into | o / / # <--- fixed nodeline tail
- # | |/ / | |/ /
- # o | | o | |
- fix_nodeline_tail = len(text) <= 2 and not add_padding_line
-
- # nodeline is the line containing the node character (typically o)
- nodeline = ["|", " "] * idx
- nodeline.extend([char, " "])
-
- nodeline.extend(
- get_nodeline_edges_tail(idx, state[1], ncols, coldiff,
- state[0], fix_nodeline_tail))
-
- # shift_interline is the line containing the non-vertical
- # edges between this entry and the next
- shift_interline = ["|", " "] * idx
- if coldiff == -1:
- n_spaces = 1
- edge_ch = "/"
- elif coldiff == 0:
- n_spaces = 2
- edge_ch = "|"
- else:
- n_spaces = 3
- edge_ch = "\\"
- shift_interline.extend(n_spaces * [" "])
- shift_interline.extend([edge_ch, " "] * (ncols - idx - 1))
-
- # draw edges from the current node to its parents
- draw_edges(edges, nodeline, shift_interline)
-
- # lines is the list of all graph lines to print
- lines = [nodeline]
- if add_padding_line:
- lines.append(get_padding_line(idx, ncols, edges))
- lines.append(shift_interline)
-
- # make sure that there are as many graph lines as there are
- # log strings
- while len(text) < len(lines):
- text.append("")
- if len(lines) < len(text):
- extra_interline = ["|", " "] * (ncols + coldiff)
- while len(lines) < len(text):
- lines.append(extra_interline)
-
- # print lines
- indentation_level = max(ncols, ncols + coldiff)
- for (line, logstr) in zip(lines, text):
- ln = "%-*s %s" % (2 * indentation_level, "".join(line), logstr)
- buf.write(ln.rstrip() + '\n')
-
- # ... and start over
- state[0] = coldiff
- state[1] = idx
-
-def generate(dag, edgefn, current):
- seen, state = [], [0, 0]
- buf = Buffer()
- for node, parents in list(dag):
- age_label = age(int(node.time)) if node.time else 'Original'
- line = '[%s] %s' % (node.n, age_label)
- char = '@' if node.n == current else 'o'
- ascii(buf, state, 'C', char, [line], edgefn(seen, node, parents))
- return buf.b
-ENDPYTHON
-"}}}
-
-"{{{ Mercurial age function
-python << ENDPYTHON
-import time
-
-agescales = [("year", 3600 * 24 * 365),
- ("month", 3600 * 24 * 30),
- ("week", 3600 * 24 * 7),
- ("day", 3600 * 24),
- ("hour", 3600),
- ("minute", 60),
- ("second", 1)]
-
-def age(ts):
- '''turn a timestamp into an age string.'''
-
- def plural(t, c):
- if c == 1:
- return t
- return t + "s"
- def fmt(t, c):
- return "%d %s" % (c, plural(t, c))
-
- now = time.time()
- then = ts
- if then > now:
- return 'in the future'
-
- delta = max(1, int(now - then))
- if delta > agescales[0][1] * 2:
- return time.strftime('%Y-%m-%d', time.gmtime(float(ts)))
-
- for t, s in agescales:
- n = delta // s
- if n >= 2 or s == 1:
- return '%s ago' % fmt(t, n)
-ENDPYTHON
-"}}}
-
-"{{{ Python Vim utility functions
-python << ENDPYTHON
-import vim
-
-normal = lambda s: vim.command('normal %s' % s)
-
-def _goto_window_for_buffer(b):
- w = vim.eval('bufwinnr(%d)' % int(b))
- vim.command('%dwincmd w' % int(w))
-
-def _goto_window_for_buffer_name(bn):
- b = vim.eval('bufnr("%s")' % bn)
- _goto_window_for_buffer(b)
-
-def _undo_to(n):
- n = int(n)
- if n == 0:
- try:
- vim.command('silent! undo 1')
- except vim.error:
- return
- vim.command('silent undo')
- else:
- vim.command('silent undo %d' % n)
-
-
-INLINE_HELP = '''\
-" Gundo for %s [%d]
-" j/k - move between undo states
-" <cr> - revert to that state
-
-'''
-ENDPYTHON
-"}}}
-
-"{{{ Python undo tree data structures and functions
-python << ENDPYTHON
-import itertools
-
-class Buffer(object):
- def __init__(self):
- self.b = ''
-
- def write(self, s):
- self.b += s
-
-class Node(object):
- def __init__(self, n, parent, time, curhead):
- self.n = int(n)
- self.parent = parent
- self.children = []
- self.curhead = curhead
- self.time = time
-
-def _make_nodes(alts, nodes, parent=None):
- p = parent
-
- for alt in alts:
- curhead = True if 'curhead' in alt else False
- node = Node(n=alt['seq'], parent=p, time=alt['time'], curhead=curhead)
- nodes.append(node)
- if alt.get('alt'):
- _make_nodes(alt['alt'], nodes, p)
- p = node
-
-def make_nodes():
- ut = vim.eval('undotree()')
- entries = ut['entries']
-
- root = Node(0, None, False, 0)
- nodes = []
- _make_nodes(entries, nodes, root)
- nodes.append(root)
- nmap = dict((node.n, node) for node in nodes)
- return nodes, nmap
-
-def changenr(nodes):
- # TODO: This seems to sometimes be wrong right after you open a file...
- _curhead_l = list(itertools.dropwhile(lambda n: not n.curhead, nodes))
- if _curhead_l:
- current = _curhead_l[0].parent.n
- else:
- current = int(vim.eval('changenr()'))
- return current
-ENDPYTHON
-"}}}
-
-"{{{ Graph rendering
-function! s:GundoRender()
-python << ENDPYTHON
-def GundoRender():
- nodes, nmap = make_nodes()
-
- for node in nodes:
- node.children = [n for n in nodes if n.parent == node]
-
- def walk_nodes(nodes):
- for node in nodes:
- yield(node, [node.parent] if node.parent else [])
-
- dag = sorted(nodes, key=lambda n: int(n.n), reverse=True)
- current = changenr(nodes)
-
- result = generate(walk_nodes(dag), asciiedges, current).rstrip().splitlines()
- result = [' ' + l for l in result]
-
- target = (vim.eval('g:gundo_target_f'), int(vim.eval('g:gundo_target_n')))
- header = (INLINE_HELP % target).splitlines()
-
- vim.command('GundoOpenBuffer')
- vim.command('setlocal modifiable')
- vim.current.buffer[:] = (header + result)
- vim.command('setlocal nomodifiable')
-
- i = 1
- for line in result:
- try:
- line.split('[')[0].index('@')
- i += 1
- break
- except ValueError:
- pass
- i += 1
- vim.command('%d' % (i+len(header)-1))
-
-GundoRender()
-ENDPYTHON
-endfunction
-"}}}
-
-"{{{ Preview Rendering
-function! s:GundoRenderPreview(target)
-python << ENDPYTHON
-import difflib
-
-def _fmt_time(t):
- return time.strftime('%Y-%m-%d %I:%M:%S %p', time.localtime(float(t)))
-
-def _output_preview_text(lines):
- _goto_window_for_buffer_name('__Gundo_Preview__')
- vim.command('setlocal modifiable')
- vim.current.buffer[:] = lines
- vim.command('setlocal nomodifiable')
-
-def _generate_preview_diff(current, node_before, node_after):
- _goto_window_for_buffer(vim.eval('g:gundo_target_n'))
-
- if not node_after.n: # we're at the original file
- before_lines = []
-
- _undo_to(0)
- after_lines = vim.current.buffer[:]
-
- before_name = 'n/a'
- before_time = ''
- after_name = 'Original'
- after_time = ''
- elif not node_before.n: # we're at a pseudo-root state
- _undo_to(0)
- before_lines = vim.current.buffer[:]
-
- _undo_to(node_after.n)
- after_lines = vim.current.buffer[:]
-
- before_name = 'Original'
- before_time = ''
- after_name = node_after.n
- after_time = _fmt_time(node_after.time)
- else:
- _undo_to(node_before.n)
- before_lines = vim.current.buffer[:]
-
- _undo_to(node_after.n)
- after_lines = vim.current.buffer[:]
-
- before_name = node_before.n
- before_time = _fmt_time(node_before.time)
- after_name = node_after.n
- after_time = _fmt_time(node_after.time)
-
- _undo_to(current)
-
- return list(difflib.unified_diff(before_lines, after_lines,
- before_name, after_name,
- before_time, after_time))
-
-def GundoRenderPreview():
- target_n = vim.eval('a:target')
-
- # Check that there's an undo state. There may not be if we're talking about
- # a buffer with no changes yet.
- if target_n == None:
- _goto_window_for_buffer_name('__Gundo__')
- return
- else:
- target_n = int(vim.eval('a:target'))
-
- _goto_window_for_buffer(vim.eval('g:gundo_target_n'))
-
- nodes, nmap = make_nodes()
- current = changenr(nodes)
-
- node_after = nmap[target_n]
- node_before = node_after.parent
-
- _output_preview_text(_generate_preview_diff(current, node_before, node_after))
-
- _goto_window_for_buffer_name('__Gundo__')
-
-GundoRenderPreview()
-ENDPYTHON
-endfunction
-"}}}
-
-"{{{ Undo/Redo Commands
-function! s:GundoRevert()
- let target_line = matchstr(getline("."), '\v\[[0-9]+\]')
- let target_num = matchstr(target_line, '\v[0-9]+')
- let back = bufwinnr(g:gundo_target_n)
- exe back . "wincmd w"
-python << ENDPYTHON
-_undo_to(vim.eval('target_num'))
-ENDPYTHON
- GundoRender
- exe back . "wincmd w"
-endfunction
-
-function! s:GundoPlayTo()
- let target_line = matchstr(getline("."), '\v\[[0-9]+\]')
- let target_num = matchstr(target_line, '\v[0-9]+')
- let back = bufwinnr(g:gundo_target_n)
- exe back . "wincmd w"
-
-python << ENDPYTHON
-def GundoPlayTo():
- nodes, nmap = make_nodes()
-
- start = nmap[changenr(nodes)]
- end = nmap[int(vim.eval('target_num'))]
-
- def _walk_branch(origin, dest):
- rev = origin.n < dest.n
-
- nodes = []
- current = origin if origin.n > dest.n else dest
- final = dest if origin.n > dest.n else origin
-
- while current.n >= final.n:
- if current.n == final.n:
- break
- nodes.append(current)
- current = current.parent
- else:
- return None
- nodes.append(current)
-
- return reversed(nodes) if rev else nodes
-
- branch = _walk_branch(start, end)
-
- if not branch:
- vim.command('unsilent echo "No path to that node from here!"')
- return
-
- for node in branch:
- _undo_to(node.n)
- vim.command('GundoRender')
- normal('zz')
- vim.command('%dwincmd w' % int(vim.eval('back')))
- vim.command('redraw')
- vim.command('sleep 60m')
-
-GundoPlayTo()
-ENDPYTHON
-endfunction
-"}}}
-
-"{{{ Misc
-command! -nargs=0 GundoOpenBuffer call s:GundoOpenBuffer()
-command! -nargs=0 GundoToggle call s:GundoToggle()
-command! -nargs=0 GundoRender call s:GundoRender()
-autocmd BufNewFile __Gundo__ call s:GundoMarkBuffer()
-autocmd BufNewFile __Gundo_Preview__ call s:GundoMarkPreviewBuffer()
-"}}}
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