localrepo: add "vfs" fields to "localrepository" for migration from "opener"
As a part of migration to vfs, this patch adds "vfs" fields to
"localrepository" class.
This allows new codes to access current "opener" objects related to
repositories via "vfs" fields, so patches referring to "vfs" will
replace referring to "opener" in time.
This patch also adds initializations for "vfs" fields to
"statichttprepository" class derived from it, because its constructor
doesn't invoke the constructor of "localrepository", so "vfs" fields
should be initialized explicitly as same as "opener" fields: it has no
working directory, so "wvfs" field is not added.
# templater.py - template expansion for output
#
# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from i18n import _
import sys, os
import util, config, templatefilters, parser, error
# template parsing
elements = {
"(": (20, ("group", 1, ")"), ("func", 1, ")")),
",": (2, None, ("list", 2)),
"|": (5, None, ("|", 5)),
"%": (6, None, ("%", 6)),
")": (0, None, None),
"symbol": (0, ("symbol",), None),
"string": (0, ("string",), None),
"end": (0, None, None),
}
def tokenizer(data):
program, start, end = data
pos = start
while pos < end:
c = program[pos]
if c.isspace(): # skip inter-token whitespace
pass
elif c in "(,)%|": # handle simple operators
yield (c, None, pos)
elif (c in '"\'' or c == 'r' and
program[pos:pos + 2] in ("r'", 'r"')): # handle quoted strings
if c == 'r':
pos += 1
c = program[pos]
decode = lambda x: x
else:
decode = lambda x: x.decode('string-escape')
pos += 1
s = pos
while pos < end: # find closing quote
d = program[pos]
if d == '\\': # skip over escaped characters
pos += 2
continue
if d == c:
yield ('string', decode(program[s:pos]), s)
break
pos += 1
else:
raise error.ParseError(_("unterminated string"), s)
elif c.isalnum() or c in '_':
s = pos
pos += 1
while pos < end: # find end of symbol
d = program[pos]
if not (d.isalnum() or d == "_"):
break
pos += 1
sym = program[s:pos]
yield ('symbol', sym, s)
pos -= 1
elif c == '}':
pos += 1
break
else:
raise error.ParseError(_("syntax error"), pos)
pos += 1
yield ('end', None, pos)
def compiletemplate(tmpl, context):
parsed = []
pos, stop = 0, len(tmpl)
p = parser.parser(tokenizer, elements)
while pos < stop:
n = tmpl.find('{', pos)
if n < 0:
parsed.append(("string", tmpl[pos:]))
break
if n > 0 and tmpl[n - 1] == '\\':
# escaped
parsed.append(("string", tmpl[pos:n - 1] + "{"))
pos = n + 1
continue
if n > pos:
parsed.append(("string", tmpl[pos:n]))
pd = [tmpl, n + 1, stop]
parseres, pos = p.parse(pd)
parsed.append(parseres)
return [compileexp(e, context) for e in parsed]
def compileexp(exp, context):
t = exp[0]
if t in methods:
return methods[t](exp, context)
raise error.ParseError(_("unknown method '%s'") % t)
# template evaluation
def getsymbol(exp):
if exp[0] == 'symbol':
return exp[1]
raise error.ParseError(_("expected a symbol"))
def getlist(x):
if not x:
return []
if x[0] == 'list':
return getlist(x[1]) + [x[2]]
return [x]
def getfilter(exp, context):
f = getsymbol(exp)
if f not in context._filters:
raise error.ParseError(_("unknown function '%s'") % f)
return context._filters[f]
def gettemplate(exp, context):
if exp[0] == 'string':
return compiletemplate(exp[1], context)
if exp[0] == 'symbol':
return context._load(exp[1])
raise error.ParseError(_("expected template specifier"))
def runstring(context, mapping, data):
return data
def runsymbol(context, mapping, key):
v = mapping.get(key)
if v is None:
v = context._defaults.get(key, '')
if util.safehasattr(v, '__call__'):
return v(**mapping)
return v
def buildfilter(exp, context):
func, data = compileexp(exp[1], context)
filt = getfilter(exp[2], context)
return (runfilter, (func, data, filt))
def runfilter(context, mapping, data):
func, data, filt = data
return filt(func(context, mapping, data))
def buildmap(exp, context):
func, data = compileexp(exp[1], context)
ctmpl = gettemplate(exp[2], context)
return (runmap, (func, data, ctmpl))
def runmap(context, mapping, data):
func, data, ctmpl = data
d = func(context, mapping, data)
lm = mapping.copy()
for i in d:
if isinstance(i, dict):
lm.update(i)
for f, d in ctmpl:
yield f(context, lm, d)
else:
# v is not an iterable of dicts, this happen when 'key'
# has been fully expanded already and format is useless.
# If so, return the expanded value.
yield i
def buildfunc(exp, context):
n = getsymbol(exp[1])
args = [compileexp(x, context) for x in getlist(exp[2])]
if n in funcs:
f = funcs[n]
return (f, args)
if n in context._filters:
if len(args) != 1:
raise error.ParseError(_("filter %s expects one argument") % n)
f = context._filters[n]
return (runfilter, (args[0][0], args[0][1], f))
methods = {
"string": lambda e, c: (runstring, e[1]),
"symbol": lambda e, c: (runsymbol, e[1]),
"group": lambda e, c: compileexp(e[1], c),
# ".": buildmember,
"|": buildfilter,
"%": buildmap,
"func": buildfunc,
}
funcs = {
}
# template engine
path = ['templates', '../templates']
stringify = templatefilters.stringify
def _flatten(thing):
'''yield a single stream from a possibly nested set of iterators'''
if isinstance(thing, str):
yield thing
elif not util.safehasattr(thing, '__iter__'):
if thing is not None:
yield str(thing)
else:
for i in thing:
if isinstance(i, str):
yield i
elif not util.safehasattr(i, '__iter__'):
if i is not None:
yield str(i)
elif i is not None:
for j in _flatten(i):
yield j
def parsestring(s, quoted=True):
'''parse a string using simple c-like syntax.
string must be in quotes if quoted is True.'''
if quoted:
if len(s) < 2 or s[0] != s[-1]:
raise SyntaxError(_('unmatched quotes'))
return s[1:-1].decode('string_escape')
return s.decode('string_escape')
class engine(object):
'''template expansion engine.
template expansion works like this. a map file contains key=value
pairs. if value is quoted, it is treated as string. otherwise, it
is treated as name of template file.
templater is asked to expand a key in map. it looks up key, and
looks for strings like this: {foo}. it expands {foo} by looking up
foo in map, and substituting it. expansion is recursive: it stops
when there is no more {foo} to replace.
expansion also allows formatting and filtering.
format uses key to expand each item in list. syntax is
{key%format}.
filter uses function to transform value. syntax is
{key|filter1|filter2|...}.'''
def __init__(self, loader, filters={}, defaults={}):
self._loader = loader
self._filters = filters
self._defaults = defaults
self._cache = {}
def _load(self, t):
'''load, parse, and cache a template'''
if t not in self._cache:
self._cache[t] = compiletemplate(self._loader(t), self)
return self._cache[t]
def process(self, t, mapping):
'''Perform expansion. t is name of map element to expand.
mapping contains added elements for use during expansion. Is a
generator.'''
return _flatten(func(self, mapping, data) for func, data in
self._load(t))
engines = {'default': engine}
class templater(object):
def __init__(self, mapfile, filters={}, defaults={}, cache={},
minchunk=1024, maxchunk=65536):
'''set up template engine.
mapfile is name of file to read map definitions from.
filters is dict of functions. each transforms a value into another.
defaults is dict of default map definitions.'''
self.mapfile = mapfile or 'template'
self.cache = cache.copy()
self.map = {}
self.base = (mapfile and os.path.dirname(mapfile)) or ''
self.filters = templatefilters.filters.copy()
self.filters.update(filters)
self.defaults = defaults
self.minchunk, self.maxchunk = minchunk, maxchunk
self.ecache = {}
if not mapfile:
return
if not os.path.exists(mapfile):
raise util.Abort(_('style not found: %s') % mapfile)
conf = config.config()
conf.read(mapfile)
for key, val in conf[''].items():
if val[0] in "'\"":
try:
self.cache[key] = parsestring(val)
except SyntaxError, inst:
raise SyntaxError('%s: %s' %
(conf.source('', key), inst.args[0]))
else:
val = 'default', val
if ':' in val[1]:
val = val[1].split(':', 1)
self.map[key] = val[0], os.path.join(self.base, val[1])
def __contains__(self, key):
return key in self.cache or key in self.map
def load(self, t):
'''Get the template for the given template name. Use a local cache.'''
if t not in self.cache:
try:
self.cache[t] = util.readfile(self.map[t][1])
except KeyError, inst:
raise util.Abort(_('"%s" not in template map') % inst.args[0])
except IOError, inst:
raise IOError(inst.args[0], _('template file %s: %s') %
(self.map[t][1], inst.args[1]))
return self.cache[t]
def __call__(self, t, **mapping):
ttype = t in self.map and self.map[t][0] or 'default'
if ttype not in self.ecache:
self.ecache[ttype] = engines[ttype](self.load,
self.filters, self.defaults)
proc = self.ecache[ttype]
stream = proc.process(t, mapping)
if self.minchunk:
stream = util.increasingchunks(stream, min=self.minchunk,
max=self.maxchunk)
return stream
def templatepath(name=None):
'''return location of template file or directory (if no name).
returns None if not found.'''
normpaths = []
# executable version (py2exe) doesn't support __file__
if util.mainfrozen():
module = sys.executable
else:
module = __file__
for f in path:
if f.startswith('/'):
p = f
else:
fl = f.split('/')
p = os.path.join(os.path.dirname(module), *fl)
if name:
p = os.path.join(p, name)
if name and os.path.exists(p):
return os.path.normpath(p)
elif os.path.isdir(p):
normpaths.append(os.path.normpath(p))
return normpaths
def stylemap(styles, paths=None):
"""Return path to mapfile for a given style.
Searches mapfile in the following locations:
1. templatepath/style/map
2. templatepath/map-style
3. templatepath/map
"""
if paths is None:
paths = templatepath()
elif isinstance(paths, str):
paths = [paths]
if isinstance(styles, str):
styles = [styles]
for style in styles:
if not style:
continue
locations = [os.path.join(style, 'map'), 'map-' + style]
locations.append('map')
for path in paths:
for location in locations:
mapfile = os.path.join(path, location)
if os.path.isfile(mapfile):
return style, mapfile
raise RuntimeError("No hgweb templates found in %r" % paths)