view sat_frontends/jp/output_xml.py @ 2862:b2e898384c25

quick_frontend (app): progress callbacks handling: in addition to listeners, a frontend can now register progression callback and errback which are called when the given progressing action is finished. Those callbacks can be registered using registerProgressCbs or specified in actionManager.
author Goffi <goffi@goffi.org>
date Wed, 20 Mar 2019 09:08:47 +0100
parents 003b8b4b56a7
children ab2696e34d29
line wrap: on
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#! /usr/bin/python
# -*- coding: utf-8 -*-

# jp: a SàT command line tool
# Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
"""Standard outputs"""


from sat_frontends.jp.constants import Const as C
from sat.core.i18n import _
from lxml import etree
from sat.core.log import getLogger

log = getLogger(__name__)
import sys

try:
    import pygments
    from pygments.lexers.html import XmlLexer
    from pygments.formatters import TerminalFormatter
except ImportError:
    pygments = None


__outputs__ = ["XML"]
RAW = u"xml_raw"
PRETTY = u"xml_pretty"


class XML(object):
    """Outputs for XML"""

    def __init__(self, host):
        self.host = host
        host.register_output(C.OUTPUT_XML, PRETTY, self.pretty, default=True)
        host.register_output(C.OUTPUT_LIST_XML, PRETTY, self.pretty_list, default=True)
        host.register_output(C.OUTPUT_XML, RAW, self.raw)
        host.register_output(C.OUTPUT_LIST_XML, RAW, self.list_raw)

    def colorize(self, xml):
        if pygments is None:
            self.host.disp(
                _(
                    u"Pygments is not available, syntax highlighting is not possible. Please install if from http://pygments.org or with pip install pygments"
                ),
                error=True,
            )
            return xml
        if not sys.stdout.isatty():
            return xml
        lexer = XmlLexer(encoding="utf-8")
        formatter = TerminalFormatter(bg=u"dark")
        return pygments.highlight(xml, lexer, formatter)

    def format(self, data, pretty=True):
        parser = etree.XMLParser(remove_blank_text=True)
        tree = etree.fromstring(data, parser)
        xml = etree.tostring(tree, encoding="unicode", pretty_print=pretty)
        return self.colorize(xml)

    def format_no_pretty(self, data):
        return self.format(data, pretty=False)

    def pretty(self, data):
        self.host.disp(self.format(data))

    def pretty_list(self, data, separator=u"\n"):
        list_pretty = map(self.format, data)
        self.host.disp(separator.join(list_pretty))

    def raw(self, data):
        self.host.disp(self.format_no_pretty(data))

    def list_raw(self, data, separator=u"\n"):
        list_no_pretty = map(self.format_no_pretty, data)
        self.host.disp(separator.join(list_no_pretty))