consoleviewer.py

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#  Copyright 2008-2015 Nokia Networks
#  Copyright 2016-     Robot Framework Foundation
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
 
import textwrap
 
from robot.errors import DataError
from robot.utils import MultiMatcher, console_encode
 
 
class ConsoleViewer:
 
    def __init__(self, libdoc):
        self._libdoc_libdoc = libdoc
        self._keywords_keywords = KeywordMatcher(libdoc)
 
    @classmethod
    def handles(cls, command):
        return command.lower() in ['list', 'show', 'version']
 
    @classmethod
    def validate_command(cls, command, args):
        if not cls.handleshandles(command):
            raise DataError("Unknown command '%s'." % command)
        if command.lower() == 'version' and args:
            raise DataError("Command 'version' does not take arguments.")
 
    def view(self, command, *args):
        self.validate_commandvalidate_command(command, args)
        getattr(self, command.lower())(*args)
 
    def list(self, *patterns):
        for kw in self._keywords_keywords.search('*%s*' % p for p in patterns):
            self._console_console(kw.name)
 
    def show(self, *names):
        if MultiMatcher(names, match_if_no_patterns=True).match('intro'):
            self._show_intro_show_intro(self._libdoc_libdoc)
            if self._libdoc_libdoc.inits:
                self._show_inits_show_inits(self._libdoc_libdoc)
        for kw in self._keywords_keywords.search(names):
            self._show_keyword_show_keyword(kw)
 
    def version(self):
        self._console_console(self._libdoc_libdoc.version or 'N/A')
 
    def _console(self, msg):
        print(console_encode(msg))
 
    def _show_intro(self, lib):
        self._header_header(lib.name, underline='=')
        self._data_data([('Version', lib.version),
                    ('Scope', lib.scope if lib.type == 'LIBRARY' else None)])
        self._doc_doc(lib.doc)
 
    def _show_inits(self, lib):
        self._header_header('Importing', underline='-')
        for init in lib.inits:
            self._show_keyword_show_keyword(init, show_name=False)
 
    def _show_keyword(self, kw, show_name=True):
        if show_name:
            self._header_header(kw.name, underline='-')
        self._data_data([('Arguments', '[%s]' % str(kw.args))])
        self._doc_doc(kw.doc)
 
    def _header(self, name, underline):
        self._console_console('%s\n%s' % (name, underline * len(name)))
 
    def _data(self, items):
        ljust = max(len(name) for name, _ in items) + 3
        for name, value in items:
            if value:
                text = '%s%s' % ((name+':').ljust(ljust), value)
                self._console_console(self._wrap_wrap(text, subsequent_indent=' '*ljust))
 
    def _doc(self, doc):
        self._console_console('')
        for line in doc.splitlines():
            self._console_console(self._wrap_wrap(line))
        if doc:
            self._console_console('')
 
    def _wrap(self, text, width=78, **config):
        return '\n'.join(textwrap.wrap(text, width=width, **config))
 
 
class KeywordMatcher:
 
    def __init__(self, libdoc):
        self._keywords_keywords = libdoc.keywords
 
    def search(self, patterns):
        matcher = MultiMatcher(patterns, match_if_no_patterns=True)
        for kw in self._keywords_keywords:
            if matcher.match(kw.name):
                yield kw