Current File : //usr/lib/python3/dist-packages/orca/find.py
# Orca
#
# Copyright 2006-2008 Sun Microsystems Inc.
# Copyright 2022 Igalia, S.L.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., Franklin Street, Fifth Floor,
# Boston MA 02110-1301 USA.
"""Provides support for a flat review find."""
__id__ = "$Id$"
__version__ = "$Revision$"
__date__ = "$Date$"
__copyright__ = "Copyright (c) 2006-2008 Sun Microsystems Inc." \
"Copyright (c) 2022 Igalia, S.L."
__license__ = "LGPL"
import copy
import re
from . import debug
from . import messages
from . import orca_state
from . import script_manager
from .flat_review import Context
class _SearchQueryMatch:
"""Represents a SearchQuery match."""
def __init__(self, context, pattern):
self._line = context.lineIndex
self._zone = context.zoneIndex
self._word = context.wordIndex
self._char = context.charIndex
self._pattern = pattern
self._lineString = context.getCurrent(Context.LINE)[0]
def __str__(self):
return "SEARCH QUERY MATCH: '%s' (line %i, zone %i, word %i, char %i) for '%s'" % \
(self._lineString, self._line, self._zone, self._word, self._char, self._pattern)
def __eq__(self, other):
if not other:
return False
return self._lineString == other._lineString and \
self._line == other._line and \
self._zone == other._zone and \
self._word == other._word and \
self._char == other._char
class SearchQuery:
"""Represents a search that the user wants to perform."""
def __init__(self):
"""Creates a new SearchQuery. A searchQuery has the following
properties:
searchString - the string to find
searchBackwards - if true, search upward for matches
caseSensitive - if true, case counts
matchEntireWord - if true, only match on the entire string
startAtTop - if true, begin the search from the top of
the window, rather than at the current
location
windowWrap - if true, when the top/bottom edge of the
window is reached wrap to the bottom/top
and continue searching
"""
self.searchString = ""
self.searchBackwards = False
self.caseSensitive = False
self.matchEntireWord = False
self.windowWrap = False
self.startAtTop = False
self.debugLevel = debug.LEVEL_INFO
self._contextLocation = [0, 0, 0, 0]
self._match = None
self._wrapped = False
def __str__(self):
string = f"FIND QUERY: '{self.searchString}'."
options = []
if self.searchBackwards:
options.append("search backwards")
if self.caseSensitive:
options.append("case sensitive")
if self.matchEntireWord:
options.append("match entire word")
if self.windowWrap:
options.append("wrap")
if self.startAtTop:
options.append("start at top")
if options:
string += f" Options: {', '.join(options)}"
if self._match:
string += f" Last match: {self._match}"
return string
def previousMatch(self):
if not orca_state.searchQuery:
return None
return orca_state.searchQuery._match
def _saveContextLocation(self, context):
self._contextLocation = [context.lineIndex,
context.zoneIndex,
context.wordIndex,
context.charIndex]
def _restoreContextLocation(self, context):
context.setCurrent(*self._contextLocation)
self._contextLocation = [0, 0, 0, 0]
def _currentContextMatches(self, context, pattern, contextType):
if contextType == Context.LINE:
typeString = "LINE"
elif contextType == Context.ZONE:
typeString = "ZONE"
elif contextType == Context.WORD:
typeString = "WORD"
else:
return False
string = context.getCurrent(contextType)[0]
match = re.search(pattern, string)
msg = "FIND: %s='%s'. Match: %s" % (typeString, string.replace("\n", "\\n"), match)
debug.println(self.debugLevel, msg, True)
return bool(match)
def _move(self, context, contextType):
if contextType == Context.WORD:
if self.searchBackwards:
return context.goPrevious(Context.WORD, Context.WRAP_LINE)
return context.goNext(Context.WORD, Context.WRAP_LINE)
if contextType == Context.ZONE:
if self.searchBackwards:
moved = context.goPrevious(Context.ZONE, Context.WRAP_LINE)
context.goEnd(Context.ZONE)
return moved
return context.goNext(Context.ZONE, Context.WRAP_LINE)
if contextType == Context.LINE:
if self.searchBackwards:
moved = context.goPrevious(Context.LINE, Context.WRAP_LINE)
context.goEnd(Context.LINE)
else:
moved = context.goNext(Context.LINE, Context.WRAP_LINE)
if moved:
return True
if not self.windowWrap or self._wrapped:
return False
self._wrapped = True
script = script_manager.getManager().getActiveScript()
if self.searchBackwards:
script.presentMessage(messages.WRAPPING_TO_BOTTOM)
moved = context.goPrevious(Context.LINE, Context.WRAP_ALL)
else:
script.presentMessage(messages.WRAPPING_TO_TOP)
moved = context.goNext(Context.LINE, Context.WRAP_ALL)
return moved
return False
def _findMatchIn(self, context, pattern, contextType):
found = self._currentContextMatches(context, pattern, contextType)
while not found:
if not self._move(context, contextType):
break
found = self._currentContextMatches(context, pattern, contextType)
return found
def _findMatch(self, context, pattern):
if not self._findMatchIn(context, pattern, Context.LINE):
return False
if not self._findMatchIn(context, pattern, Context.ZONE):
return False
if not self._findMatchIn(context, pattern, Context.WORD):
return False
if not self.previousMatch():
return True
candidateMatch = _SearchQueryMatch(context, pattern)
if candidateMatch != self.previousMatch():
return True
if self._move(context, Context.WORD) \
and self._findMatchIn(context, pattern, Context.WORD):
return True
if self._move(context, Context.ZONE) \
and self._findMatchIn(context, pattern, Context.ZONE):
return True
if self._move(context, Context.LINE):
return self._findMatch(context, pattern)
return False
def findQuery(self, context):
"""Performs a search on the string specified in searchQuery.
Arguments:
- context: The context from active script
Returns:
- The context of the match, if found
"""
debug.println(self.debugLevel, str(self), True)
flags = re.U
if not self.caseSensitive:
flags = flags | re.IGNORECASE
if self.matchEntireWord:
regexp = "\\b" + self.searchString + "\\b"
else:
regexp = self.searchString
pattern = re.compile(regexp, flags)
self._saveContextLocation(context)
if self.startAtTop:
context.goBegin(Context.WINDOW)
location = None
if self._findMatch(context, pattern):
self._saveContextLocation(context)
self._match = _SearchQueryMatch(context, pattern)
self._wrapped = False
location = copy.copy(context)
else:
self._restoreContextLocation(context)
orca_state.searchQuery = copy.copy(self)
return location
def getLastQuery():
"""Grabs the last search query performed from orca_state.
Returns:
- A copy of the last search query, if it exists
"""
lastQuery = copy.copy(orca_state.searchQuery)
return lastQuery
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