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# This file is part of the Frescobaldi project, http://www.frescobaldi.org/
#
# Copyright (c) 2008, 2009, 2010 by Wilbert Berendsen
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# See http://www.gnu.org/licenses/ for more information.
from __future__ import unicode_literals
""" All kinds or regular expressions dealing with the LilyPond format """
import re
step = (
r"\b("
r"[a-h]("
r"(iss){1,2}|(ess){1,2}|(is){1,2}|(es){1,2}"
r"|(sharp){1,2}|(flat){1,2}|ss?|x|ff?"
r"|(is)?ih|(es)eh|t?q[sf]" # quarter tones
r")?"
r"|(do|re|mi|fa|sol|la|si)("
r"dd?|bb?|ss?|kk?"
r"b?sb|d?sd|[bs]t?qt" # quarter tones
r")?"
r"|as|asess?|asas|es|esess?" # special cases
r"|eseh|as[ae]h" # special quarter tone cases
r")(?![A-Za-z])"
)
named_step = "(?P<step>" + step + ")"
rest = r"(\b[Rrs]|\\skip)(?![A-Za-z])"
named_rest = "(?P<rest>" + rest + ")"
octave = r"('+|,+|(?![A-Za-z]))"
named_octave = "(?P<octave>" + octave + ")"
cautionary = r"[?!]?"
named_cautionary = "(?P<cautionary>" + cautionary + ")"
octcheck = "=[',]*"
named_octcheck = "(?P<octcheck>" + octcheck + ")"
pitch = (
step + octave + cautionary + r"(\s*" + octcheck + r")?")
named_pitch = (
named_step + named_octave + named_cautionary + r"(\s*" +
named_octcheck + r")?")
duration = (
r"(?P<duration>"
r"(?P<dur>"
r"\\(maxima|longa|breve)\b|"
r"(1|2|4|8|16|32|64|128|256|512|1024|2048)(?!\d)"
r")"
r"(\s*(?P<dots>\.+))?"
r"(?P<scale>(\s*\*\s*\d+(/\d+)?)*)"
r")"
)
quotedstring = r"\"(?:\\\\|\\\"|[^\"])*\""
skip_pitches = (
# skip \relative or \transpose pitch, etc:
r"\\(relative|transposition)\s+" + pitch +
r"|\\transpose\s+" + pitch + r"\s*" + pitch +
# and skip commands
r"|\\[A-Za-z]+"
)
# a sounding pitch/chord with duration
chord = re.compile(
# skip this:
r"<<|>>|" + quotedstring +
# but catch either a pitch plus an octave
r"|(?P<full>(?P<chord>" + named_pitch +
# or a chord:
r"|<(\\[A-Za-z]+|" + quotedstring + r"|[^>])*>"
r")"
# finally a duration?
r"(\s*" + duration + r")?)"
r"|" + skip_pitches
)
# a sounding pitch/chord OR rest/skip with duration
chord_rest = re.compile(
# skip this:
r"<<|>>|" + quotedstring +
# but catch either a pitch plus an octave
r"|(?P<full>(?P<chord>" + named_pitch +
# or a chord:
r"|<(\\[A-Za-z]+|" + quotedstring + r"|[^>])*>"
# or a spacer or rest:
r"|" + named_rest +
r")"
# finally a duration?
r"(\s*" + duration + r")?)"
r"|" + skip_pitches
)
finddurs = re.compile(duration)
lyric_word = re.compile(r'[^\W0-9_]+', re.UNICODE)
include_file = re.compile(r'\\include\s*"([^"]+)"')
# does not take percent signs inside quoted strings into account
comment = r'%\{.*?%\}|%.*?\n'
all_comments = re.compile(comment, re.DOTALL)
# document language
language = re.compile(
r'.*\\include\s*"('
"nederlands|english|deutsch|norsk|svenska|suomi|"
"italiano|catalan|espanol|portugues|vlaams"
r')\.ly"', re.DOTALL)
# point and click, check for matchgroup 1 (on) and/or 2 (off)
point_and_click = re.compile(
quotedstring + "|" + comment +
r"|(\\pointAndClickOn\b|#\s*\(ly:set-option\s+'point-and-click\s+#t\s*\))"
r"|(\\pointAndClickOff\b|#\s*\(ly:set-option\s+'point-and-click\s+#f\s*\))",
re.DOTALL)
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