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# formatter.py - generic output formatting for mercurial
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#
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# Copyright 2012 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from __future__ import absolute_import
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import cPickle
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import os
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from .i18n import _
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from .node import (
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hex,
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short,
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)
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from . import (
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encoding,
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error,
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templater,
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)
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class baseformatter(object):
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def __init__(self, ui, topic, opts):
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self._ui = ui
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self._topic = topic
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self._style = opts.get("style")
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self._template = opts.get("template")
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self._item = None
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# function to convert node to string suitable for this output
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self.hexfunc = hex
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def __nonzero__(self):
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'''return False if we're not doing real templating so we can
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skip extra work'''
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return True
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def _showitem(self):
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'''show a formatted item once all data is collected'''
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pass
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def startitem(self):
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'''begin an item in the format list'''
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if self._item is not None:
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self._showitem()
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self._item = {}
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def data(self, **data):
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'''insert data into item that's not shown in default output'''
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self._item.update(data)
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def write(self, fields, deftext, *fielddata, **opts):
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'''do default text output while assigning data to item'''
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fieldkeys = fields.split()
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assert len(fieldkeys) == len(fielddata)
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self._item.update(zip(fieldkeys, fielddata))
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def condwrite(self, cond, fields, deftext, *fielddata, **opts):
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'''do conditional write (primarily for plain formatter)'''
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fieldkeys = fields.split()
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assert len(fieldkeys) == len(fielddata)
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self._item.update(zip(fieldkeys, fielddata))
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def plain(self, text, **opts):
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'''show raw text for non-templated mode'''
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pass
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def end(self):
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'''end output for the formatter'''
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if self._item is not None:
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self._showitem()
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class plainformatter(baseformatter):
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'''the default text output scheme'''
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def __init__(self, ui, topic, opts):
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baseformatter.__init__(self, ui, topic, opts)
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if ui.debugflag:
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self.hexfunc = hex
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else:
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self.hexfunc = short
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def __nonzero__(self):
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return False
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def startitem(self):
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pass
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def data(self, **data):
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pass
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def write(self, fields, deftext, *fielddata, **opts):
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self._ui.write(deftext % fielddata, **opts)
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def condwrite(self, cond, fields, deftext, *fielddata, **opts):
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'''do conditional write'''
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if cond:
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self._ui.write(deftext % fielddata, **opts)
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def plain(self, text, **opts):
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self._ui.write(text, **opts)
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def end(self):
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pass
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class debugformatter(baseformatter):
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def __init__(self, ui, topic, opts):
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baseformatter.__init__(self, ui, topic, opts)
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self._ui.write("%s = [\n" % self._topic)
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def _showitem(self):
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self._ui.write(" " + repr(self._item) + ",\n")
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def end(self):
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baseformatter.end(self)
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self._ui.write("]\n")
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class pickleformatter(baseformatter):
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def __init__(self, ui, topic, opts):
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baseformatter.__init__(self, ui, topic, opts)
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self._data = []
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def _showitem(self):
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self._data.append(self._item)
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def end(self):
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baseformatter.end(self)
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self._ui.write(cPickle.dumps(self._data))
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def _jsonifyobj(v):
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if isinstance(v, tuple):
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return '[' + ', '.join(_jsonifyobj(e) for e in v) + ']'
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elif v is None:
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return 'null'
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elif v is True:
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return 'true'
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elif v is False:
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return 'false'
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elif isinstance(v, (int, float)):
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return str(v)
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else:
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return '"%s"' % encoding.jsonescape(v)
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class jsonformatter(baseformatter):
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def __init__(self, ui, topic, opts):
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baseformatter.__init__(self, ui, topic, opts)
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self._ui.write("[")
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self._ui._first = True
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def _showitem(self):
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if self._ui._first:
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self._ui._first = False
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else:
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self._ui.write(",")
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self._ui.write("\n {\n")
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first = True
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for k, v in sorted(self._item.items()):
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if first:
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first = False
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else:
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self._ui.write(",\n")
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self._ui.write(' "%s": %s' % (k, _jsonifyobj(v)))
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self._ui.write("\n }")
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def end(self):
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baseformatter.end(self)
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self._ui.write("\n]\n")
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class templateformatter(baseformatter):
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def __init__(self, ui, topic, opts):
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baseformatter.__init__(self, ui, topic, opts)
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self._topic = topic
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self._t = gettemplater(ui, topic, opts.get('template', ''))
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def _showitem(self):
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g = self._t(self._topic, ui=self._ui, **self._item)
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self._ui.write(templater.stringify(g))
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def lookuptemplate(ui, topic, tmpl):
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# looks like a literal template?
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if '{' in tmpl:
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return tmpl, None
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# perhaps a stock style?
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if not os.path.split(tmpl)[0]:
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mapname = (templater.templatepath('map-cmdline.' + tmpl)
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or templater.templatepath(tmpl))
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if mapname and os.path.isfile(mapname):
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return None, mapname
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# perhaps it's a reference to [templates]
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t = ui.config('templates', tmpl)
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if t:
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return templater.unquotestring(t), None
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if tmpl == 'list':
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ui.write(_("available styles: %s\n") % templater.stylelist())
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raise error.Abort(_("specify a template"))
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# perhaps it's a path to a map or a template
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if ('/' in tmpl or '\\' in tmpl) and os.path.isfile(tmpl):
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# is it a mapfile for a style?
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if os.path.basename(tmpl).startswith("map-"):
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return None, os.path.realpath(tmpl)
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tmpl = open(tmpl).read()
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return tmpl, None
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# constant string?
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return tmpl, None
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def gettemplater(ui, topic, spec):
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tmpl, mapfile = lookuptemplate(ui, topic, spec)
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assert not (tmpl and mapfile)
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if mapfile:
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return templater.templater.frommapfile(mapfile)
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return maketemplater(ui, topic, tmpl)
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def maketemplater(ui, topic, tmpl, filters=None, cache=None):
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"""Create a templater from a string template 'tmpl'"""
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aliases = ui.configitems('templatealias')
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t = templater.templater(filters=filters, cache=cache, aliases=aliases)
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if tmpl:
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t.cache[topic] = tmpl
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return t
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def formatter(ui, topic, opts):
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template = opts.get("template", "")
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if template == "json":
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return jsonformatter(ui, topic, opts)
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elif template == "pickle":
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return pickleformatter(ui, topic, opts)
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elif template == "debug":
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return debugformatter(ui, topic, opts)
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elif template != "":
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return templateformatter(ui, topic, opts)
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# developer config: ui.formatdebug
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elif ui.configbool('ui', 'formatdebug'):
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return debugformatter(ui, topic, opts)
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# deprecated config: ui.formatjson
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elif ui.configbool('ui', 'formatjson'):
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return jsonformatter(ui, topic, opts)
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return plainformatter(ui, topic, opts)
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