rust-chg: add helper to parse instructions sent from server
This is well structured version of runinstructions() of chg.c.
Differential Revision: https://phab.mercurial-scm.org/D8378
# templatefuncs.py - common template functions
#
# 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 __future__ import absolute_import
import re
from .i18n import _
from .node import (
bin,
wdirid,
)
from . import (
color,
dagop,
diffutil,
encoding,
error,
minirst,
obsutil,
pycompat,
registrar,
revset as revsetmod,
revsetlang,
scmutil,
templatefilters,
templatekw,
templateutil,
util,
)
from .utils import (
dateutil,
stringutil,
)
evalrawexp = templateutil.evalrawexp
evalwrapped = templateutil.evalwrapped
evalfuncarg = templateutil.evalfuncarg
evalboolean = templateutil.evalboolean
evaldate = templateutil.evaldate
evalinteger = templateutil.evalinteger
evalstring = templateutil.evalstring
evalstringliteral = templateutil.evalstringliteral
# dict of template built-in functions
funcs = {}
templatefunc = registrar.templatefunc(funcs)
@templatefunc(b'date(date[, fmt])')
def date(context, mapping, args):
"""Format a date. See :hg:`help dates` for formatting
strings. The default is a Unix date format, including the timezone:
"Mon Sep 04 15:13:13 2006 0700"."""
if not (1 <= len(args) <= 2):
# i18n: "date" is a keyword
raise error.ParseError(_(b"date expects one or two arguments"))
date = evaldate(
context,
mapping,
args[0],
# i18n: "date" is a keyword
_(b"date expects a date information"),
)
fmt = None
if len(args) == 2:
fmt = evalstring(context, mapping, args[1])
if fmt is None:
return dateutil.datestr(date)
else:
return dateutil.datestr(date, fmt)
@templatefunc(b'dict([[key=]value...])', argspec=b'*args **kwargs')
def dict_(context, mapping, args):
"""Construct a dict from key-value pairs. A key may be omitted if
a value expression can provide an unambiguous name."""
data = util.sortdict()
for v in args[b'args']:
k = templateutil.findsymbolicname(v)
if not k:
raise error.ParseError(_(b'dict key cannot be inferred'))
if k in data or k in args[b'kwargs']:
raise error.ParseError(_(b"duplicated dict key '%s' inferred") % k)
data[k] = evalfuncarg(context, mapping, v)
data.update(
(k, evalfuncarg(context, mapping, v))
for k, v in pycompat.iteritems(args[b'kwargs'])
)
return templateutil.hybriddict(data)
@templatefunc(
b'diff([includepattern [, excludepattern]])', requires={b'ctx', b'ui'}
)
def diff(context, mapping, args):
"""Show a diff, optionally
specifying files to include or exclude."""
if len(args) > 2:
# i18n: "diff" is a keyword
raise error.ParseError(_(b"diff expects zero, one, or two arguments"))
def getpatterns(i):
if i < len(args):
s = evalstring(context, mapping, args[i]).strip()
if s:
return [s]
return []
ctx = context.resource(mapping, b'ctx')
ui = context.resource(mapping, b'ui')
diffopts = diffutil.diffallopts(ui)
chunks = ctx.diff(
match=ctx.match([], getpatterns(0), getpatterns(1)), opts=diffopts
)
return b''.join(chunks)
@templatefunc(
b'extdata(source)', argspec=b'source', requires={b'ctx', b'cache'}
)
def extdata(context, mapping, args):
"""Show a text read from the specified extdata source. (EXPERIMENTAL)"""
if b'source' not in args:
# i18n: "extdata" is a keyword
raise error.ParseError(_(b'extdata expects one argument'))
source = evalstring(context, mapping, args[b'source'])
if not source:
sym = templateutil.findsymbolicname(args[b'source'])
if sym:
raise error.ParseError(
_(b'empty data source specified'),
hint=_(b"did you mean extdata('%s')?") % sym,
)
else:
raise error.ParseError(_(b'empty data source specified'))
cache = context.resource(mapping, b'cache').setdefault(b'extdata', {})
ctx = context.resource(mapping, b'ctx')
if source in cache:
data = cache[source]
else:
data = cache[source] = scmutil.extdatasource(ctx.repo(), source)
return data.get(ctx.rev(), b'')
@templatefunc(b'files(pattern)', requires={b'ctx'})
def files(context, mapping, args):
"""All files of the current changeset matching the pattern. See
:hg:`help patterns`."""
if not len(args) == 1:
# i18n: "files" is a keyword
raise error.ParseError(_(b"files expects one argument"))
raw = evalstring(context, mapping, args[0])
ctx = context.resource(mapping, b'ctx')
m = ctx.match([raw])
files = list(ctx.matches(m))
return templateutil.compatfileslist(context, mapping, b"file", files)
@templatefunc(b'fill(text[, width[, initialident[, hangindent]]])')
def fill(context, mapping, args):
"""Fill many
paragraphs with optional indentation. See the "fill" filter."""
if not (1 <= len(args) <= 4):
# i18n: "fill" is a keyword
raise error.ParseError(_(b"fill expects one to four arguments"))
text = evalstring(context, mapping, args[0])
width = 76
initindent = b''
hangindent = b''
if 2 <= len(args) <= 4:
width = evalinteger(
context,
mapping,
args[1],
# i18n: "fill" is a keyword
_(b"fill expects an integer width"),
)
try:
initindent = evalstring(context, mapping, args[2])
hangindent = evalstring(context, mapping, args[3])
except IndexError:
pass
return templatefilters.fill(text, width, initindent, hangindent)
@templatefunc(b'filter(iterable[, expr])')
def filter_(context, mapping, args):
"""Remove empty elements from a list or a dict. If expr specified, it's
applied to each element to test emptiness."""
if not (1 <= len(args) <= 2):
# i18n: "filter" is a keyword
raise error.ParseError(_(b"filter expects one or two arguments"))
iterable = evalwrapped(context, mapping, args[0])
if len(args) == 1:
def select(w):
return w.tobool(context, mapping)
else:
def select(w):
if not isinstance(w, templateutil.mappable):
raise error.ParseError(_(b"not filterable by expression"))
lm = context.overlaymap(mapping, w.tomap(context))
return evalboolean(context, lm, args[1])
return iterable.filter(context, mapping, select)
@templatefunc(b'formatnode(node)', requires={b'ui'})
def formatnode(context, mapping, args):
"""Obtain the preferred form of a changeset hash. (DEPRECATED)"""
if len(args) != 1:
# i18n: "formatnode" is a keyword
raise error.ParseError(_(b"formatnode expects one argument"))
ui = context.resource(mapping, b'ui')
node = evalstring(context, mapping, args[0])
if ui.debugflag:
return node
return templatefilters.short(node)
@templatefunc(b'mailmap(author)', requires={b'repo', b'cache'})
def mailmap(context, mapping, args):
"""Return the author, updated according to the value
set in the .mailmap file"""
if len(args) != 1:
raise error.ParseError(_(b"mailmap expects one argument"))
author = evalstring(context, mapping, args[0])
cache = context.resource(mapping, b'cache')
repo = context.resource(mapping, b'repo')
if b'mailmap' not in cache:
data = repo.wvfs.tryread(b'.mailmap')
cache[b'mailmap'] = stringutil.parsemailmap(data)
return stringutil.mapname(cache[b'mailmap'], author)
@templatefunc(
b'pad(text, width[, fillchar=\' \'[, left=False[, truncate=False]]])',
argspec=b'text width fillchar left truncate',
)
def pad(context, mapping, args):
"""Pad text with a
fill character."""
if b'text' not in args or b'width' not in args:
# i18n: "pad" is a keyword
raise error.ParseError(_(b"pad() expects two to four arguments"))
width = evalinteger(
context,
mapping,
args[b'width'],
# i18n: "pad" is a keyword
_(b"pad() expects an integer width"),
)
text = evalstring(context, mapping, args[b'text'])
truncate = False
left = False
fillchar = b' '
if b'fillchar' in args:
fillchar = evalstring(context, mapping, args[b'fillchar'])
if len(color.stripeffects(fillchar)) != 1:
# i18n: "pad" is a keyword
raise error.ParseError(_(b"pad() expects a single fill character"))
if b'left' in args:
left = evalboolean(context, mapping, args[b'left'])
if b'truncate' in args:
truncate = evalboolean(context, mapping, args[b'truncate'])
fillwidth = width - encoding.colwidth(color.stripeffects(text))
if fillwidth < 0 and truncate:
return encoding.trim(color.stripeffects(text), width, leftside=left)
if fillwidth <= 0:
return text
if left:
return fillchar * fillwidth + text
else:
return text + fillchar * fillwidth
@templatefunc(b'indent(text, indentchars[, firstline])')
def indent(context, mapping, args):
"""Indents all non-empty lines
with the characters given in the indentchars string. An optional
third parameter will override the indent for the first line only
if present."""
if not (2 <= len(args) <= 3):
# i18n: "indent" is a keyword
raise error.ParseError(_(b"indent() expects two or three arguments"))
text = evalstring(context, mapping, args[0])
indent = evalstring(context, mapping, args[1])
firstline = indent
if len(args) == 3:
firstline = evalstring(context, mapping, args[2])
return templatefilters.indent(text, indent, firstline=firstline)
@templatefunc(b'get(dict, key)')
def get(context, mapping, args):
"""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 types."""
if len(args) != 2:
# i18n: "get" is a keyword
raise error.ParseError(_(b"get() expects two arguments"))
dictarg = evalwrapped(context, mapping, args[0])
key = evalrawexp(context, mapping, args[1])
try:
return dictarg.getmember(context, mapping, key)
except error.ParseError as err:
# i18n: "get" is a keyword
hint = _(b"get() expects a dict as first argument")
raise error.ParseError(bytes(err), hint=hint)
@templatefunc(b'config(section, name[, default])', requires={b'ui'})
def config(context, mapping, args):
"""Returns the requested hgrc config option as a string."""
fn = context.resource(mapping, b'ui').config
return _config(context, mapping, args, fn, evalstring)
@templatefunc(b'configbool(section, name[, default])', requires={b'ui'})
def configbool(context, mapping, args):
"""Returns the requested hgrc config option as a boolean."""
fn = context.resource(mapping, b'ui').configbool
return _config(context, mapping, args, fn, evalboolean)
@templatefunc(b'configint(section, name[, default])', requires={b'ui'})
def configint(context, mapping, args):
"""Returns the requested hgrc config option as an integer."""
fn = context.resource(mapping, b'ui').configint
return _config(context, mapping, args, fn, evalinteger)
def _config(context, mapping, args, configfn, defaultfn):
if not (2 <= len(args) <= 3):
raise error.ParseError(_(b"config expects two or three arguments"))
# The config option can come from any section, though we specifically
# reserve the [templateconfig] section for dynamically defining options
# for this function without also requiring an extension.
section = evalstringliteral(context, mapping, args[0])
name = evalstringliteral(context, mapping, args[1])
if len(args) == 3:
default = defaultfn(context, mapping, args[2])
return configfn(section, name, default)
else:
return configfn(section, name)
@templatefunc(b'if(expr, then[, else])')
def if_(context, mapping, args):
"""Conditionally execute based on the result of
an expression."""
if not (2 <= len(args) <= 3):
# i18n: "if" is a keyword
raise error.ParseError(_(b"if expects two or three arguments"))
test = evalboolean(context, mapping, args[0])
if test:
return evalrawexp(context, mapping, args[1])
elif len(args) == 3:
return evalrawexp(context, mapping, args[2])
@templatefunc(b'ifcontains(needle, haystack, then[, else])')
def ifcontains(context, mapping, args):
"""Conditionally execute based
on whether the item "needle" is in "haystack"."""
if not (3 <= len(args) <= 4):
# i18n: "ifcontains" is a keyword
raise error.ParseError(_(b"ifcontains expects three or four arguments"))
haystack = evalwrapped(context, mapping, args[1])
try:
needle = evalrawexp(context, mapping, args[0])
found = haystack.contains(context, mapping, needle)
except error.ParseError:
found = False
if found:
return evalrawexp(context, mapping, args[2])
elif len(args) == 4:
return evalrawexp(context, mapping, args[3])
@templatefunc(b'ifeq(expr1, expr2, then[, else])')
def ifeq(context, mapping, args):
"""Conditionally execute based on
whether 2 items are equivalent."""
if not (3 <= len(args) <= 4):
# i18n: "ifeq" is a keyword
raise error.ParseError(_(b"ifeq expects three or four arguments"))
test = evalstring(context, mapping, args[0])
match = evalstring(context, mapping, args[1])
if test == match:
return evalrawexp(context, mapping, args[2])
elif len(args) == 4:
return evalrawexp(context, mapping, args[3])
@templatefunc(b'join(list, sep)')
def join(context, mapping, args):
"""Join items in a list with a delimiter."""
if not (1 <= len(args) <= 2):
# i18n: "join" is a keyword
raise error.ParseError(_(b"join expects one or two arguments"))
joinset = evalwrapped(context, mapping, args[0])
joiner = b" "
if len(args) > 1:
joiner = evalstring(context, mapping, args[1])
return joinset.join(context, mapping, joiner)
@templatefunc(b'label(label, expr)', requires={b'ui'})
def label(context, mapping, args):
"""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(_(b"label expects two arguments"))
ui = context.resource(mapping, b'ui')
thing = evalstring(context, mapping, args[1])
# preserve unknown symbol as literal so effects like 'red', 'bold',
# etc. don't need to be quoted
label = evalstringliteral(context, mapping, args[0])
return ui.label(thing, label)
@templatefunc(b'latesttag([pattern])')
def latesttag(context, mapping, args):
"""The global tags matching the given pattern on the
most recent globally tagged ancestor of this changeset.
If no such tags exist, the "{tag}" template resolves to
the string "null". See :hg:`help revisions.patterns` for the pattern
syntax.
"""
if len(args) > 1:
# i18n: "latesttag" is a keyword
raise error.ParseError(_(b"latesttag expects at most one argument"))
pattern = None
if len(args) == 1:
pattern = evalstring(context, mapping, args[0])
return templatekw.showlatesttags(context, mapping, pattern)
@templatefunc(b'localdate(date[, tz])')
def localdate(context, mapping, args):
"""Converts a date to the specified timezone.
The default is local date."""
if not (1 <= len(args) <= 2):
# i18n: "localdate" is a keyword
raise error.ParseError(_(b"localdate expects one or two arguments"))
date = evaldate(
context,
mapping,
args[0],
# i18n: "localdate" is a keyword
_(b"localdate expects a date information"),
)
if len(args) >= 2:
tzoffset = None
tz = evalfuncarg(context, mapping, args[1])
if isinstance(tz, bytes):
tzoffset, remainder = dateutil.parsetimezone(tz)
if remainder:
tzoffset = None
if tzoffset is None:
try:
tzoffset = int(tz)
except (TypeError, ValueError):
# i18n: "localdate" is a keyword
raise error.ParseError(_(b"localdate expects a timezone"))
else:
tzoffset = dateutil.makedate()[1]
return templateutil.date((date[0], tzoffset))
@templatefunc(b'max(iterable)')
def max_(context, mapping, args, **kwargs):
"""Return the max of an iterable"""
if len(args) != 1:
# i18n: "max" is a keyword
raise error.ParseError(_(b"max expects one argument"))
iterable = evalwrapped(context, mapping, args[0])
try:
return iterable.getmax(context, mapping)
except error.ParseError as err:
# i18n: "max" is a keyword
hint = _(b"max first argument should be an iterable")
raise error.ParseError(bytes(err), hint=hint)
@templatefunc(b'min(iterable)')
def min_(context, mapping, args, **kwargs):
"""Return the min of an iterable"""
if len(args) != 1:
# i18n: "min" is a keyword
raise error.ParseError(_(b"min expects one argument"))
iterable = evalwrapped(context, mapping, args[0])
try:
return iterable.getmin(context, mapping)
except error.ParseError as err:
# i18n: "min" is a keyword
hint = _(b"min first argument should be an iterable")
raise error.ParseError(bytes(err), hint=hint)
@templatefunc(b'mod(a, b)')
def mod(context, mapping, args):
"""Calculate a mod b such that a / b + a mod b == a"""
if not len(args) == 2:
# i18n: "mod" is a keyword
raise error.ParseError(_(b"mod expects two arguments"))
func = lambda a, b: a % b
return templateutil.runarithmetic(
context, mapping, (func, args[0], args[1])
)
@templatefunc(b'obsfateoperations(markers)')
def obsfateoperations(context, mapping, args):
"""Compute obsfate related information based on markers (EXPERIMENTAL)"""
if len(args) != 1:
# i18n: "obsfateoperations" is a keyword
raise error.ParseError(_(b"obsfateoperations expects one argument"))
markers = evalfuncarg(context, mapping, args[0])
try:
data = obsutil.markersoperations(markers)
return templateutil.hybridlist(data, name=b'operation')
except (TypeError, KeyError):
# i18n: "obsfateoperations" is a keyword
errmsg = _(b"obsfateoperations first argument should be an iterable")
raise error.ParseError(errmsg)
@templatefunc(b'obsfatedate(markers)')
def obsfatedate(context, mapping, args):
"""Compute obsfate related information based on markers (EXPERIMENTAL)"""
if len(args) != 1:
# i18n: "obsfatedate" is a keyword
raise error.ParseError(_(b"obsfatedate expects one argument"))
markers = evalfuncarg(context, mapping, args[0])
try:
# TODO: maybe this has to be a wrapped list of date wrappers?
data = obsutil.markersdates(markers)
return templateutil.hybridlist(data, name=b'date', fmt=b'%d %d')
except (TypeError, KeyError):
# i18n: "obsfatedate" is a keyword
errmsg = _(b"obsfatedate first argument should be an iterable")
raise error.ParseError(errmsg)
@templatefunc(b'obsfateusers(markers)')
def obsfateusers(context, mapping, args):
"""Compute obsfate related information based on markers (EXPERIMENTAL)"""
if len(args) != 1:
# i18n: "obsfateusers" is a keyword
raise error.ParseError(_(b"obsfateusers expects one argument"))
markers = evalfuncarg(context, mapping, args[0])
try:
data = obsutil.markersusers(markers)
return templateutil.hybridlist(data, name=b'user')
except (TypeError, KeyError, ValueError):
# i18n: "obsfateusers" is a keyword
msg = _(
b"obsfateusers first argument should be an iterable of "
b"obsmakers"
)
raise error.ParseError(msg)
@templatefunc(b'obsfateverb(successors, markers)')
def obsfateverb(context, mapping, args):
"""Compute obsfate related information based on successors (EXPERIMENTAL)"""
if len(args) != 2:
# i18n: "obsfateverb" is a keyword
raise error.ParseError(_(b"obsfateverb expects two arguments"))
successors = evalfuncarg(context, mapping, args[0])
markers = evalfuncarg(context, mapping, args[1])
try:
return obsutil.obsfateverb(successors, markers)
except TypeError:
# i18n: "obsfateverb" is a keyword
errmsg = _(b"obsfateverb first argument should be countable")
raise error.ParseError(errmsg)
@templatefunc(b'relpath(path)', requires={b'repo'})
def relpath(context, mapping, args):
"""Convert a repository-absolute path into a filesystem path relative to
the current working directory."""
if len(args) != 1:
# i18n: "relpath" is a keyword
raise error.ParseError(_(b"relpath expects one argument"))
repo = context.resource(mapping, b'repo')
path = evalstring(context, mapping, args[0])
return repo.pathto(path)
@templatefunc(b'revset(query[, formatargs...])', requires={b'repo', b'cache'})
def revset(context, mapping, args):
"""Execute a revision set query. See
:hg:`help revset`."""
if not len(args) > 0:
# i18n: "revset" is a keyword
raise error.ParseError(_(b"revset expects one or more arguments"))
raw = evalstring(context, mapping, args[0])
repo = context.resource(mapping, b'repo')
def query(expr):
m = revsetmod.match(repo.ui, expr, lookup=revsetmod.lookupfn(repo))
return m(repo)
if len(args) > 1:
key = None # dynamically-created revs shouldn't be cached
formatargs = [evalfuncarg(context, mapping, a) for a in args[1:]]
revs = query(revsetlang.formatspec(raw, *formatargs))
else:
cache = context.resource(mapping, b'cache')
revsetcache = cache.setdefault(b"revsetcache", {})
key = raw
if key in revsetcache:
revs = revsetcache[key]
else:
revs = query(raw)
revsetcache[key] = revs
return templateutil.revslist(repo, revs, name=b'revision', cachekey=key)
@templatefunc(b'rstdoc(text, style)')
def rstdoc(context, mapping, args):
"""Format reStructuredText."""
if len(args) != 2:
# i18n: "rstdoc" is a keyword
raise error.ParseError(_(b"rstdoc expects two arguments"))
text = evalstring(context, mapping, args[0])
style = evalstring(context, mapping, args[1])
return minirst.format(text, style=style, keep=[b'verbose'])
@templatefunc(b'search(pattern, text)')
def search(context, mapping, args):
"""Look for the first text matching the regular expression pattern.
Groups are accessible as ``{1}``, ``{2}``, ... in %-mapped template."""
if len(args) != 2:
# i18n: "search" is a keyword
raise error.ParseError(_(b'search expects two arguments'))
pat = evalstring(context, mapping, args[0])
src = evalstring(context, mapping, args[1])
try:
patre = re.compile(pat)
except re.error:
# i18n: "search" is a keyword
raise error.ParseError(_(b'search got an invalid pattern: %s') % pat)
# named groups shouldn't shadow *reserved* resource keywords
badgroups = context.knownresourcekeys() & set(
pycompat.byteskwargs(patre.groupindex)
)
if badgroups:
raise error.ParseError(
# i18n: "search" is a keyword
_(b'invalid group %(group)s in search pattern: %(pat)s')
% {
b'group': b', '.join(b"'%s'" % g for g in sorted(badgroups)),
b'pat': pat,
}
)
match = patre.search(src)
if not match:
return templateutil.mappingnone()
lm = {b'0': match.group(0)}
lm.update((b'%d' % i, v) for i, v in enumerate(match.groups(), 1))
lm.update(pycompat.byteskwargs(match.groupdict()))
return templateutil.mappingdict(lm, tmpl=b'{0}')
@templatefunc(b'separate(sep, args...)', argspec=b'sep *args')
def separate(context, mapping, args):
"""Add a separator between non-empty arguments."""
if b'sep' not in args:
# i18n: "separate" is a keyword
raise error.ParseError(_(b"separate expects at least one argument"))
sep = evalstring(context, mapping, args[b'sep'])
first = True
for arg in args[b'args']:
argstr = evalstring(context, mapping, arg)
if not argstr:
continue
if first:
first = False
else:
yield sep
yield argstr
@templatefunc(b'shortest(node, minlength=4)', requires={b'repo', b'cache'})
def shortest(context, mapping, args):
"""Obtain the shortest representation of
a node."""
if not (1 <= len(args) <= 2):
# i18n: "shortest" is a keyword
raise error.ParseError(_(b"shortest() expects one or two arguments"))
hexnode = evalstring(context, mapping, args[0])
minlength = 4
if len(args) > 1:
minlength = evalinteger(
context,
mapping,
args[1],
# i18n: "shortest" is a keyword
_(b"shortest() expects an integer minlength"),
)
repo = context.resource(mapping, b'repo')
if len(hexnode) > 40:
return hexnode
elif len(hexnode) == 40:
try:
node = bin(hexnode)
except TypeError:
return hexnode
else:
try:
node = scmutil.resolvehexnodeidprefix(repo, hexnode)
except error.WdirUnsupported:
node = wdirid
except error.LookupError:
return hexnode
if not node:
return hexnode
cache = context.resource(mapping, b'cache')
try:
return scmutil.shortesthexnodeidprefix(repo, node, minlength, cache)
except error.RepoLookupError:
return hexnode
@templatefunc(b'strip(text[, chars])')
def strip(context, mapping, args):
"""Strip characters from a string. By default,
strips all leading and trailing whitespace."""
if not (1 <= len(args) <= 2):
# i18n: "strip" is a keyword
raise error.ParseError(_(b"strip expects one or two arguments"))
text = evalstring(context, mapping, args[0])
if len(args) == 2:
chars = evalstring(context, mapping, args[1])
return text.strip(chars)
return text.strip()
@templatefunc(b'sub(pattern, replacement, expression)')
def sub(context, mapping, args):
"""Perform text substitution
using regular expressions."""
if len(args) != 3:
# i18n: "sub" is a keyword
raise error.ParseError(_(b"sub expects three arguments"))
pat = evalstring(context, mapping, args[0])
rpl = evalstring(context, mapping, args[1])
src = evalstring(context, mapping, args[2])
try:
patre = re.compile(pat)
except re.error:
# i18n: "sub" is a keyword
raise error.ParseError(_(b"sub got an invalid pattern: %s") % pat)
try:
yield patre.sub(rpl, src)
except re.error:
# i18n: "sub" is a keyword
raise error.ParseError(_(b"sub got an invalid replacement: %s") % rpl)
@templatefunc(b'startswith(pattern, text)')
def startswith(context, mapping, args):
"""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(_(b"startswith expects two arguments"))
patn = evalstring(context, mapping, args[0])
text = evalstring(context, mapping, args[1])
if text.startswith(patn):
return text
return b''
@templatefunc(
b'subsetparents(rev, revset)',
argspec=b'rev revset',
requires={b'repo', b'cache'},
)
def subsetparents(context, mapping, args):
"""Look up parents of the rev in the sub graph given by the revset."""
if b'rev' not in args or b'revset' not in args:
# i18n: "subsetparents" is a keyword
raise error.ParseError(_(b"subsetparents expects two arguments"))
repo = context.resource(mapping, b'repo')
rev = templateutil.evalinteger(context, mapping, args[b'rev'])
# TODO: maybe subsetparents(rev) should be allowed. the default revset
# will be the revisions specified by -rREV argument.
q = templateutil.evalwrapped(context, mapping, args[b'revset'])
if not isinstance(q, templateutil.revslist):
# i18n: "subsetparents" is a keyword
raise error.ParseError(_(b"subsetparents expects a queried revset"))
subset = q.tovalue(context, mapping)
key = q.cachekey
if key:
# cache only if revset query isn't dynamic
cache = context.resource(mapping, b'cache')
walkercache = cache.setdefault(b'subsetparentswalker', {})
if key in walkercache:
walker = walkercache[key]
else:
walker = dagop.subsetparentswalker(repo, subset)
walkercache[key] = walker
else:
# for one-shot use, specify startrev to limit the search space
walker = dagop.subsetparentswalker(repo, subset, startrev=rev)
return templateutil.revslist(repo, walker.parentsset(rev))
@templatefunc(b'word(number, text[, separator])')
def word(context, mapping, args):
"""Return the nth word from a string."""
if not (2 <= len(args) <= 3):
# i18n: "word" is a keyword
raise error.ParseError(
_(b"word expects two or three arguments, got %d") % len(args)
)
num = evalinteger(
context,
mapping,
args[0],
# i18n: "word" is a keyword
_(b"word expects an integer index"),
)
text = evalstring(context, mapping, args[1])
if len(args) == 3:
splitter = evalstring(context, mapping, args[2])
else:
splitter = None
tokens = text.split(splitter)
if num >= len(tokens) or num < -len(tokens):
return b''
else:
return tokens[num]
def loadfunction(ui, extname, registrarobj):
"""Load template function from specified registrarobj
"""
for name, func in pycompat.iteritems(registrarobj._table):
funcs[name] = func
# tell hggettext to extract docstrings from these functions:
i18nfunctions = funcs.values()