comparison mercurial/templatefuncs.py @ 37327:ebf139cbd4a1

templater: abstract away from joinfmt

Future patches will add a wrapper for a list of template mappings, which
will implement a custom join() something like {join(mappings % template)}.

The original join() function is broken down as follows:

  if hasattr(joinset, 'joinfmt'):
      # hybrid.join() where values must be a list or a dict
      joinitems((joinfmt(x) for x in values), sep)
  elif isinstance(joinset, templateutil.wrapped):
      # mappable.join()
      show()
  else:
      # a plain list, a generator, or a byte string; joinfmt was identity()
      joinset = templateutil.unwrapvalue(context, joinset)
      joinitems(pycompat.maybebytestr(joinset), joiner)

37326:9cd88dd3bf64

    """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"))

    # TODO: perhaps this should be evalfuncarg(), but it can't because hgweb
    # abuses generator as a keyword that returns a list of dicts.
    joinset = evalrawexp(context, mapping, args[0])
    joinset = templateutil.unwrapvalue(context, mapping, joinset)
    joinfmt = getattr(joinset, 'joinfmt', pycompat.identity)
    joiner = " "
    if len(args) > 1:
        joiner = evalstring(context, mapping, args[1])
    itemiter = (joinfmt(x) for x in pycompat.maybebytestr(joinset))
    return templateutil.joinitems(itemiter, joiner)

@templatefunc('label(label, expr)')
def label(context, mapping, args):
    """Apply a label to generated content. Content with
    a label applied can result in additional post-processing, such as

37327:ebf139cbd4a1

    """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 = evalrawexp(context, mapping, args[0])
    joiner = " "
    if len(args) > 1:
        joiner = evalstring(context, mapping, args[1])
    if isinstance(joinset, templateutil.wrapped):
        return joinset.join(context, mapping, joiner)
    # TODO: perhaps a generator should be stringify()-ed here, but we can't
    # because hgweb abuses it as a keyword that returns a list of dicts.
    joinset = templateutil.unwrapvalue(context, mapping, joinset)
    return templateutil.joinitems(pycompat.maybebytestr(joinset), joiner)

@templatefunc('label(label, expr)')
def label(context, mapping, args):
    """Apply a label to generated content. Content with
    a label applied can result in additional post-processing, such as