Generalize interface between Vim and Python
This commit is contained in:
Tim Pope
parent
1b2e58db97
commit
2073263c07
@ -28,43 +28,6 @@ function! nrepl#fireplace_connection#bencode(value) abort
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endif
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endfunction
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function! nrepl#fireplace_connection#bdecode(value) abort
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return s:bdecode({'pos': 0, 'value': a:value})
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endfunction
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function! s:bdecode(state) abort
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let value = a:state.value
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if value[a:state.pos] =~# '\d'
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let pos = a:state.pos
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let length = matchstr(value[pos : -1], '^\d\+')
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let a:state.pos += strlen(length) + length + 1
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return value[pos+strlen(length)+1 : pos+strlen(length)+length]
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elseif value[a:state.pos] ==# 'i'
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let int = matchstr(value[a:state.pos+1:-1], '[^e]*')
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let a:state.pos += 2 + strlen(int)
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return str2nr(int)
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elseif value[a:state.pos] ==# 'l'
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let values = []
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let a:state.pos += 1
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while value[a:state.pos] !=# 'e' && value[a:state.pos] !=# ''
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call add(values, s:bdecode(a:state))
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endwhile
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let a:state.pos += 1
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return values
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elseif value[a:state.pos] ==# 'd'
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let values = {}
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let a:state.pos += 1
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while value[a:state.pos] !=# 'e' && value[a:state.pos] !=# ''
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let key = s:bdecode(a:state)
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let values[key] = s:bdecode(a:state)
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endwhile
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let a:state.pos += 1
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return values
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else
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throw 'bencode parse error: '.string(a:state)
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endif
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endfunction
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" }}}1
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function! s:shellesc(arg) abort
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@ -198,20 +161,26 @@ function! s:extract_last_stacktrace(nrepl) abort
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return stacktrace
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endfunction
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function! s:nrepl_call(payload) dict abort
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function! s:nrepl_dispatch(command, ...) dict abort
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let in = 'python'
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\ . ' ' . s:shellesc(s:python_dir.'/nrepl_fireplace.py')
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\ . ' ' . s:shellesc(a:command)
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\ . ' ' . s:shellesc(self.host)
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\ . ' ' . s:shellesc(self.port)
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\ . ' ' . s:shellesc(nrepl#fireplace_connection#bencode(a:payload))
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\ . ' ' . join(map(copy(a:000), 's:shellesc(v:val)'), ' ')
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let out = system(in)
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if !v:shell_error
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return nrepl#fireplace_connection#bdecode('l'.out.'e')
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return eval(out)
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endif
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throw 'nREPL: '.out
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endfunction
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function! s:nrepl_call(payload) dict abort
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return self.dispatch('call', nrepl#fireplace_connection#bencode(a:payload))
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endfunction
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let s:nrepl = {
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\ 'dispatch': s:function('s:nrepl_dispatch'),
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\ 'call': s:function('s:nrepl_call'),
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\ 'eval': s:function('s:nrepl_eval'),
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\ 'path': s:function('s:nrepl_path'),
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@ -222,7 +191,7 @@ if !has('python')
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endif
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if !exists('s:python')
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exe 'python sys.path.insert(0, "'.s:python_dir.'")'
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exe 'python sys.path.insert(0, "'.escape(s:python_dir, '\"').'")'
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let s:python = 1
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python import nrepl_fireplace
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else
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@ -232,33 +201,23 @@ endif
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python << EOF
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import vim
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def fireplace_string_encode(input):
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str_list = []
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for c in input:
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if (000 <= ord(c) and ord(c) <= 037) or c == '"' or c == "\\":
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str_list.append("\\{0:03o}".format(ord(c)))
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else:
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str_list.append(c)
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return '"' + ''.join(str_list) + '"'
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def fireplace_let(var, value):
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return vim.command('let ' + var + " = " + fireplace_string_encode(value))
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return vim.command('let ' + var + ' = ' + nrepl_fireplace.vim_encode(value))
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def fireplace_check():
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vim.eval('getchar(1)')
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def fireplace_repl_interact():
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def fireplace_repl_dispatch(command, *args):
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try:
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fireplace_let('out', nrepl_fireplace.repl_send(vim.eval('self.host'), int(vim.eval('self.port')), vim.eval('payload'), fireplace_check))
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fireplace_let('out', nrepl_fireplace.dispatch(command, vim.eval('self.host'), vim.eval('self.port'), fireplace_check, *args))
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except Exception, e:
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fireplace_let('err', str(e))
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EOF
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function! s:nrepl_call(payload) dict abort
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let payload = nrepl#fireplace_connection#bencode(a:payload)
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python fireplace_repl_interact()
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function! s:nrepl_dispatch(command, ...) dict abort
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python fireplace_repl_dispatch(vim.eval('a:command'), *vim.eval('a:000'))
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if !exists('err')
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return nrepl#fireplace_connection#bdecode('l'.out.'e')
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return out
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endif
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throw 'nREPL Connection Error: '.err
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endfunction
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@ -3,33 +3,102 @@ import select
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import socket
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import re
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def repl_send(host, port, payload, callback):
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buffer = ''
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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s.settimeout(8)
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try:
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s.connect((host, port))
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s.setblocking(1)
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s.sendall(payload)
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while True:
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while len(select.select([s], [], [], 0.1)[0]) == 0:
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callback()
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body = s.recv(8192)
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if re.search("=> $", body) != None:
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raise Exception("not an nREPL server: upgrade to Leiningen 2")
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buffer += body
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if re.search('6:statusl(5:error|14:session-closed)?4:done', body):
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break
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return buffer
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finally:
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s.close()
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def noop():
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pass
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def main(host, port, payload):
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def vim_encode(data):
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if isinstance(data, list):
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return "[" + ",".join([vim_encode(x) for x in data]) + "]"
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elif isinstance(data, dict):
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return "{" + ",".join([vim_encode(x)+":"+vim_encode(y) for x,y in data.items()]) + "}"
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elif isinstance(data, str):
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str_list = []
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for c in data:
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if (000 <= ord(c) and ord(c) <= 037) or c == '"' or c == "\\":
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str_list.append("\\{0:03o}".format(ord(c)))
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else:
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str_list.append(c)
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return '"' + ''.join(str_list) + '"'
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elif isinstance(data, int):
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return str(data)
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else:
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raise TypeError("can't encode a " + type(data).__name__)
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def bdecode(f, char=None):
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if char == None:
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char = f.read(1)
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if char == 'l':
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l = []
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while True:
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char = f.read(1)
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if char == 'e':
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return l
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l.append(bdecode(f, char))
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elif char == 'd':
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d = {}
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while True:
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char = f.read(1)
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if char == 'e':
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return d
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key = bdecode(f, char)
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d[key] = bdecode(f)
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elif char == 'i':
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i = 0
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while True:
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char = f.read(1)
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if char == 'e':
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return i
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i = 10 * i + int(char)
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else:
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i = int(char)
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while True:
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char = f.read(1)
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if char == ':':
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return f.read(i)
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i = 10 * i + int(char)
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class Connection:
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def __init__(self, host, port, poll=noop):
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self.poll = poll
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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s.settimeout(8)
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s.connect((host, int(port)))
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s.setblocking(1)
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self.socket = s
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def close(self):
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return self.socket.close()
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def send(self, payload):
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self.socket.sendall(payload)
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return ''
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def receive(self, char=None):
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f = self.socket.makefile()
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try:
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sys.stdout.write(repl_send(host, int(port), payload, noop))
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return bdecode(f)
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finally:
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f.close()
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def call(self, payload):
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self.send(payload)
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responses = []
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while True:
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responses.append(self.receive())
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if 'status' in responses[-1] and 'done' in responses[-1]['status']:
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return responses
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def dispatch(command, host, port, poll, *args):
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conn = Connection(host, port, poll)
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try:
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return getattr(conn, command)(*args)
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finally:
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conn.close()
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def main(command, host, port, *args):
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try:
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sys.stdout.write(vim_encode(dispatch(command, host, port, noop, *args)))
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except Exception, e:
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print(e)
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exit(1)
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