##// END OF EJS Templates
match: enable 'subinclude:' syntax...
match: enable 'subinclude:' syntax This adds a new rule syntax that allows the user to include a pattern file, but only have those patterns match against files underneath the subdirectory of the pattern file. This is useful when you have nested projects in a repository and the inner projects wants to set up ignore rules that won't affect other projects in the repository. It is also useful in high commit rate repositories for removing the root .hgignore as a point of contention.

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templater.py
844 lines | 27.5 KiB | text/x-python | PythonLexer
# 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 os, re
import util, config, templatefilters, templatekw, parser, error
import revset as revsetmod
import types
import minirst
# template parsing
elements = {
"(": (20, ("group", 1, ")"), ("func", 1, ")")),
",": (2, None, ("list", 2)),
"|": (5, None, ("|", 5)),
"%": (6, None, ("%", 6)),
")": (0, None, None),
"integer": (0, ("integer",), None),
"symbol": (0, ("symbol",), None),
"string": (0, ("string",), None),
"rawstring": (0, ("rawstring",), 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 = False
else:
decode = True
pos += 1
s = pos
while pos < end: # find closing quote
d = program[pos]
if decode and d == '\\': # skip over escaped characters
pos += 2
continue
if d == c:
if not decode:
yield ('rawstring', program[s:pos], s)
break
yield ('string', program[s:pos], s)
break
pos += 1
else:
raise error.ParseError(_("unterminated string"), s)
elif c.isdigit() or c == '-':
s = pos
if c == '-': # simply take negate operator as part of integer
pos += 1
if pos >= end or not program[pos].isdigit():
raise error.ParseError(_("integer literal without digits"), s)
pos += 1
while pos < end:
d = program[pos]
if not d.isdigit():
break
pos += 1
yield ('integer', program[s:pos], s)
pos -= 1
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, strtoken="string"):
parsed = []
pos, stop = 0, len(tmpl)
p = parser.parser(tokenizer, elements)
while pos < stop:
n = tmpl.find('{', pos)
if n < 0:
parsed.append((strtoken, tmpl[pos:]))
break
bs = (n - pos) - len(tmpl[pos:n].rstrip('\\'))
if strtoken == 'string' and bs % 2 == 1:
# escaped (e.g. '\{', '\\\{', but not '\\{' nor r'\{')
parsed.append((strtoken, (tmpl[pos:n - 1] + "{")))
pos = n + 1
continue
if n > pos:
parsed.append((strtoken, tmpl[pos:n]))
pd = [tmpl, n + 1, stop]
parseres, pos = p.parse(pd)
parsed.append(parseres)
return [compileexp(e, context, methods) for e in parsed]
def compileexp(exp, context, curmethods):
t = exp[0]
if t in curmethods:
return curmethods[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, got '%s'") % exp[0])
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' or exp[0] == 'rawstring':
return compiletemplate(exp[1], context, strtoken=exp[0])
if exp[0] == 'symbol':
return context._load(exp[1])
raise error.ParseError(_("expected template specifier"))
def runinteger(context, mapping, data):
return int(data)
def runstring(context, mapping, data):
return data.decode("string-escape")
def runrawstring(context, mapping, data):
return data
def runsymbol(context, mapping, key):
v = mapping.get(key)
if v is None:
v = context._defaults.get(key)
if v is None:
try:
v = context.process(key, mapping)
except TemplateNotFound:
v = ''
if callable(v):
return v(**mapping)
if isinstance(v, types.GeneratorType):
v = list(v)
return v
def buildfilter(exp, context):
func, data = compileexp(exp[1], context, methods)
filt = getfilter(exp[2], context)
return (runfilter, (func, data, filt))
def runfilter(context, mapping, data):
func, data, filt = data
# func() may return string, generator of strings or arbitrary object such
# as date tuple, but filter does not want generator.
thing = func(context, mapping, data)
if isinstance(thing, types.GeneratorType):
thing = stringify(thing)
try:
return filt(thing)
except (ValueError, AttributeError, TypeError):
if isinstance(data, tuple):
dt = data[1]
else:
dt = data
raise util.Abort(_("template filter '%s' is not compatible with "
"keyword '%s'") % (filt.func_name, dt))
def buildmap(exp, context):
func, data = compileexp(exp[1], context, methods)
ctmpl = gettemplate(exp[2], context)
return (runmap, (func, data, ctmpl))
def runtemplate(context, mapping, template):
for func, data in template:
yield func(context, mapping, data)
def runmap(context, mapping, data):
func, data, ctmpl = data
d = func(context, mapping, data)
if callable(d):
d = d()
lm = mapping.copy()
for i in d:
if isinstance(i, dict):
lm.update(i)
lm['originalnode'] = mapping.get('node')
yield runtemplate(context, lm, ctmpl)
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, exprmethods) 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))
raise error.ParseError(_("unknown function '%s'") % n)
def date(context, mapping, args):
""":date(date[, fmt]): Format a date. See :hg:`help dates` for formatting
strings."""
if not (1 <= len(args) <= 2):
# i18n: "date" is a keyword
raise error.ParseError(_("date expects one or two arguments"))
date = args[0][0](context, mapping, args[0][1])
fmt = None
if len(args) == 2:
fmt = stringify(args[1][0](context, mapping, args[1][1]))
try:
if fmt is None:
return util.datestr(date)
else:
return util.datestr(date, fmt)
except (TypeError, ValueError):
# i18n: "date" is a keyword
raise error.ParseError(_("date expects a date information"))
def diff(context, mapping, args):
""":diff([includepattern [, excludepattern]]): Show a diff, optionally
specifying files to include or exclude."""
if len(args) > 2:
# i18n: "diff" is a keyword
raise error.ParseError(_("diff expects one, two or no arguments"))
def getpatterns(i):
if i < len(args):
s = args[i][1].strip()
if s:
return [s]
return []
ctx = mapping['ctx']
chunks = ctx.diff(match=ctx.match([], getpatterns(0), getpatterns(1)))
return ''.join(chunks)
def fill(context, mapping, args):
""":fill(text[, width[, initialident[, hangindent]]]): Fill many
paragraphs with optional indentation. See the "fill" filter."""
if not (1 <= len(args) <= 4):
# i18n: "fill" is a keyword
raise error.ParseError(_("fill expects one to four arguments"))
text = stringify(args[0][0](context, mapping, args[0][1]))
width = 76
initindent = ''
hangindent = ''
if 2 <= len(args) <= 4:
try:
width = int(stringify(args[1][0](context, mapping, args[1][1])))
except ValueError:
# i18n: "fill" is a keyword
raise error.ParseError(_("fill expects an integer width"))
try:
initindent = stringify(_evalifliteral(args[2], context, mapping))
hangindent = stringify(_evalifliteral(args[3], context, mapping))
except IndexError:
pass
return templatefilters.fill(text, width, initindent, hangindent)
def pad(context, mapping, args):
""":pad(text, width[, fillchar=' '[, right=False]]): Pad text with a
fill character."""
if not (2 <= len(args) <= 4):
# i18n: "pad" is a keyword
raise error.ParseError(_("pad() expects two to four arguments"))
width = int(args[1][1])
text = stringify(args[0][0](context, mapping, args[0][1]))
if args[0][0] == runstring:
text = stringify(runtemplate(context, mapping,
compiletemplate(text, context)))
right = False
fillchar = ' '
if len(args) > 2:
fillchar = stringify(args[2][0](context, mapping, args[2][1]))
if len(args) > 3:
right = util.parsebool(args[3][1])
if right:
return text.rjust(width, fillchar)
else:
return text.ljust(width, fillchar)
def get(context, mapping, args):
""":get(dict, key): Get an attribute/key from an object. Some keywords
are complex types. This function allows you to obtain the value of an
attribute on these type."""
if len(args) != 2:
# i18n: "get" is a keyword
raise error.ParseError(_("get() expects two arguments"))
dictarg = args[0][0](context, mapping, args[0][1])
if not util.safehasattr(dictarg, 'get'):
# i18n: "get" is a keyword
raise error.ParseError(_("get() expects a dict as first argument"))
key = args[1][0](context, mapping, args[1][1])
yield dictarg.get(key)
def _evalifliteral(arg, context, mapping):
t = stringify(arg[0](context, mapping, arg[1]))
if arg[0] == runstring or arg[0] == runrawstring:
yield runtemplate(context, mapping,
compiletemplate(t, context, strtoken='rawstring'))
else:
yield t
def if_(context, mapping, args):
""":if(expr, then[, else]): Conditionally execute based on the result of
an expression."""
if not (2 <= len(args) <= 3):
# i18n: "if" is a keyword
raise error.ParseError(_("if expects two or three arguments"))
test = stringify(args[0][0](context, mapping, args[0][1]))
if test:
yield _evalifliteral(args[1], context, mapping)
elif len(args) == 3:
yield _evalifliteral(args[2], context, mapping)
def ifcontains(context, mapping, args):
""":ifcontains(search, thing, then[, else]): Conditionally execute based
on whether the item "search" is in "thing"."""
if not (3 <= len(args) <= 4):
# i18n: "ifcontains" is a keyword
raise error.ParseError(_("ifcontains expects three or four arguments"))
item = stringify(args[0][0](context, mapping, args[0][1]))
items = args[1][0](context, mapping, args[1][1])
if item in items:
yield _evalifliteral(args[2], context, mapping)
elif len(args) == 4:
yield _evalifliteral(args[3], context, mapping)
def ifeq(context, mapping, args):
""":ifeq(expr1, expr2, then[, else]): Conditionally execute based on
whether 2 items are equivalent."""
if not (3 <= len(args) <= 4):
# i18n: "ifeq" is a keyword
raise error.ParseError(_("ifeq expects three or four arguments"))
test = stringify(args[0][0](context, mapping, args[0][1]))
match = stringify(args[1][0](context, mapping, args[1][1]))
if test == match:
yield _evalifliteral(args[2], context, mapping)
elif len(args) == 4:
yield _evalifliteral(args[3], context, mapping)
def join(context, mapping, args):
""":join(list, sep): Join items in a list with a delimiter."""
if not (1 <= len(args) <= 2):
# i18n: "join" is a keyword
raise error.ParseError(_("join expects one or two arguments"))
joinset = args[0][0](context, mapping, args[0][1])
if callable(joinset):
jf = joinset.joinfmt
joinset = [jf(x) for x in joinset()]
joiner = " "
if len(args) > 1:
joiner = stringify(args[1][0](context, mapping, args[1][1]))
first = True
for x in joinset:
if first:
first = False
else:
yield joiner
yield x
def label(context, mapping, args):
""":label(label, expr): Apply a label to generated content. Content with
a label applied can result in additional post-processing, such as
automatic colorization."""
if len(args) != 2:
# i18n: "label" is a keyword
raise error.ParseError(_("label expects two arguments"))
# ignore args[0] (the label string) since this is supposed to be a a no-op
yield _evalifliteral(args[1], context, mapping)
def revset(context, mapping, args):
""":revset(query[, formatargs...]): Execute a revision set query. See
:hg:`help revset`."""
if not len(args) > 0:
# i18n: "revset" is a keyword
raise error.ParseError(_("revset expects one or more arguments"))
raw = args[0][1]
ctx = mapping['ctx']
repo = ctx.repo()
def query(expr):
m = revsetmod.match(repo.ui, expr)
return m(repo)
if len(args) > 1:
formatargs = list([a[0](context, mapping, a[1]) for a in args[1:]])
revs = query(revsetmod.formatspec(raw, *formatargs))
revs = list([str(r) for r in revs])
else:
revsetcache = mapping['cache'].setdefault("revsetcache", {})
if raw in revsetcache:
revs = revsetcache[raw]
else:
revs = query(raw)
revs = list([str(r) for r in revs])
revsetcache[raw] = revs
return templatekw.showlist("revision", revs, **mapping)
def rstdoc(context, mapping, args):
""":rstdoc(text, style): Format ReStructuredText."""
if len(args) != 2:
# i18n: "rstdoc" is a keyword
raise error.ParseError(_("rstdoc expects two arguments"))
text = stringify(args[0][0](context, mapping, args[0][1]))
style = stringify(args[1][0](context, mapping, args[1][1]))
return minirst.format(text, style=style, keep=['verbose'])
def shortest(context, mapping, args):
""":shortest(node, minlength=4): Obtain the shortest representation of
a node."""
if not (1 <= len(args) <= 2):
# i18n: "shortest" is a keyword
raise error.ParseError(_("shortest() expects one or two arguments"))
node = stringify(args[0][0](context, mapping, args[0][1]))
minlength = 4
if len(args) > 1:
minlength = int(args[1][1])
cl = mapping['ctx']._repo.changelog
def isvalid(test):
try:
try:
cl.index.partialmatch(test)
except AttributeError:
# Pure mercurial doesn't support partialmatch on the index.
# Fallback to the slow way.
if cl._partialmatch(test) is None:
return False
try:
i = int(test)
# if we are a pure int, then starting with zero will not be
# confused as a rev; or, obviously, if the int is larger than
# the value of the tip rev
if test[0] == '0' or i > len(cl):
return True
return False
except ValueError:
return True
except error.RevlogError:
return False
shortest = node
startlength = max(6, minlength)
length = startlength
while True:
test = node[:length]
if isvalid(test):
shortest = test
if length == minlength or length > startlength:
return shortest
length -= 1
else:
length += 1
if len(shortest) <= length:
return shortest
def strip(context, mapping, args):
""":strip(text[, chars]): Strip characters from a string."""
if not (1 <= len(args) <= 2):
# i18n: "strip" is a keyword
raise error.ParseError(_("strip expects one or two arguments"))
text = stringify(args[0][0](context, mapping, args[0][1]))
if len(args) == 2:
chars = stringify(args[1][0](context, mapping, args[1][1]))
return text.strip(chars)
return text.strip()
def sub(context, mapping, args):
""":sub(pattern, replacement, expression): Perform text substitution
using regular expressions."""
if len(args) != 3:
# i18n: "sub" is a keyword
raise error.ParseError(_("sub expects three arguments"))
pat = stringify(args[0][0](context, mapping, args[0][1]))
rpl = stringify(args[1][0](context, mapping, args[1][1]))
src = stringify(_evalifliteral(args[2], context, mapping))
yield re.sub(pat, rpl, src)
def startswith(context, mapping, args):
""":startswith(pattern, text): Returns the value from the "text" argument
if it begins with the content from the "pattern" argument."""
if len(args) != 2:
# i18n: "startswith" is a keyword
raise error.ParseError(_("startswith expects two arguments"))
patn = stringify(args[0][0](context, mapping, args[0][1]))
text = stringify(args[1][0](context, mapping, args[1][1]))
if text.startswith(patn):
return text
return ''
def word(context, mapping, args):
""":word(number, text[, separator]): Return the nth word from a string."""
if not (2 <= len(args) <= 3):
# i18n: "word" is a keyword
raise error.ParseError(_("word expects two or three arguments, got %d")
% len(args))
try:
num = int(stringify(args[0][0](context, mapping, args[0][1])))
except ValueError:
# i18n: "word" is a keyword
raise error.ParseError(_("word expects an integer index"))
text = stringify(args[1][0](context, mapping, args[1][1]))
if len(args) == 3:
splitter = stringify(args[2][0](context, mapping, args[2][1]))
else:
splitter = None
tokens = text.split(splitter)
if num >= len(tokens):
return ''
else:
return tokens[num]
# methods to interpret function arguments or inner expressions (e.g. {_(x)})
exprmethods = {
"integer": lambda e, c: (runinteger, e[1]),
"string": lambda e, c: (runstring, e[1]),
"rawstring": lambda e, c: (runrawstring, e[1]),
"symbol": lambda e, c: (runsymbol, e[1]),
"group": lambda e, c: compileexp(e[1], c, exprmethods),
# ".": buildmember,
"|": buildfilter,
"%": buildmap,
"func": buildfunc,
}
# methods to interpret top-level template (e.g. {x}, {x|_}, {x % "y"})
methods = exprmethods.copy()
methods["integer"] = exprmethods["symbol"] # '{1}' as variable
funcs = {
"date": date,
"diff": diff,
"fill": fill,
"get": get,
"if": if_,
"ifcontains": ifcontains,
"ifeq": ifeq,
"join": join,
"label": label,
"pad": pad,
"revset": revset,
"rstdoc": rstdoc,
"shortest": shortest,
"startswith": startswith,
"strip": strip,
"sub": sub,
"word": word,
}
# template engine
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 unquotestring(s):
'''unwrap quotes'''
if len(s) < 2 or s[0] != s[-1]:
raise SyntaxError(_('unmatched quotes'))
# de-backslash-ify only <\">. it is invalid syntax in non-string part of
# template, but we are likely to escape <"> in quoted string and it was
# accepted before, thanks to issue4290. <\\"> is unmodified because it
# is ambiguous and it was processed as such before 2.8.1.
#
# template result
# --------- ------------------------
# {\"\"} parse error
# "{""}" {""} -> <>
# "{\"\"}" {""} -> <>
# {"\""} {"\""} -> <">
# '{"\""}' {"\""} -> <">
# "{"\""}" parse error (don't care)
q = s[0]
return s[1:-1].replace('\\\\' + q, '\\\\\\' + q).replace('\\' + q, q)
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(runtemplate(self, mapping, self._load(t)))
engines = {'default': engine}
def stylelist():
paths = templatepaths()
if not paths:
return _('no templates found, try `hg debuginstall` for more info')
dirlist = os.listdir(paths[0])
stylelist = []
for file in dirlist:
split = file.split(".")
if split[0] == "map-cmdline":
stylelist.append(split[1])
return ", ".join(sorted(stylelist))
class TemplateNotFound(util.Abort):
pass
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 = {}
if mapfile:
self.base = os.path.dirname(mapfile)
else:
self.base = ''
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 '%s' not found") % mapfile,
hint=_("available styles: %s") % stylelist())
conf = config.config(includepaths=templatepaths())
conf.read(mapfile)
for key, val in conf[''].items():
if not val:
raise SyntaxError(_('%s: missing value') % conf.source('', key))
if val[0] in "'\"":
try:
self.cache[key] = unquotestring(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 TemplateNotFound(_('"%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 templatepaths():
'''return locations used for template files.'''
pathsrel = ['templates']
paths = [os.path.normpath(os.path.join(util.datapath, f))
for f in pathsrel]
return [p for p in paths if os.path.isdir(p)]
def templatepath(name):
'''return location of template file. returns None if not found.'''
for p in templatepaths():
f = os.path.join(p, name)
if os.path.exists(f):
return f
return None
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 = templatepaths()
elif isinstance(paths, str):
paths = [paths]
if isinstance(styles, str):
styles = [styles]
for style in styles:
# only plain name is allowed to honor template paths
if (not style
or style in (os.curdir, os.pardir)
or os.sep in style
or os.altsep and os.altsep in 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)
# tell hggettext to extract docstrings from these functions:
i18nfunctions = funcs.values()