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view abc2xml/abc2xml.py @ 842:b489468ac09c
Added tag build-default-314 for changeset 501449fe2dd7
author | Jenkins Build Manager <jenkins@cryhavoc.org.uk> |
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date | Fri, 15 Feb 2019 00:44:23 +0000 |
parents | 4fab69a1027d |
children | b1dbb76f4eb9 |
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# coding=latin-1 ''' Copyright (C) 2012: Willem G. Vree Contributions: Nils Liberg, Nicolas Froment, Norman Schmidt, Reinier Maliepaard, Martin Tarenskeen 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. <http://www.gnu.org/licenses/gpl.html>. ''' from pyparsing import Word, OneOrMore, Optional, Literal, NotAny, MatchFirst from pyparsing import Group, oneOf, Suppress, ZeroOrMore, Combine, FollowedBy from pyparsing import srange, CharsNotIn, StringEnd, LineEnd, White, Regex from pyparsing import nums, alphas, alphanums, ParseException, Forward try: import xml.etree.cElementTree as E except: import xml.etree.ElementTree as E import types, sys, os, re, datetime VERSION = 58 def info (s, warn=1): x = (warn and '-- ' or '') + s try: sys.stderr.write (x + '\n') except: sys.stderr.write (repr (x) + '\n') def abc_grammar (): # header, voice and lyrics grammar for ABC b1 = Word (u"-,'<>\u2019#", exact=1) # catch misplaced chars in chords #----------------------------------------------------------------- # ABC header (fld_text elements are matched later with reg. epr's) #----------------------------------------------------------------- number = Word (nums).setParseAction (lambda t: int (t[0])) field_str = Regex (r'(?:\\.|[^]\\])*') # match anything until end of field, skip escaped \] field_str.setParseAction (lambda t: t[0].strip ()) # and strip spacing userdef_symbol = Word (srange ('[H-Wh-w~]'), exact=1) fieldId = oneOf ('K L M Q P I T C O A Z N G H R B D F S E r') # info fields X_field = Literal ('X') + Suppress (':') + number + field_str U_field = Literal ('U') + Suppress (':') + userdef_symbol + Suppress ('=') + field_str V_field = Literal ('V') + Suppress (':') + Word (alphanums + '_') + field_str inf_fld = fieldId + Suppress (':') + field_str ifield = Suppress ('[') + (X_field | U_field | V_field | inf_fld) + Suppress (']') abc_header = OneOrMore (ifield) + StringEnd () #--------------------------------------------------------------------------------- # I:score with recursive part groups and {* grand staff marker #--------------------------------------------------------------------------------- voiceId = Suppress (Optional ('*')) + Word (alphanums + '_') voice_gr = Suppress ('(') + OneOrMore (voiceId | Suppress ('|')) + Suppress (')') simple_part = voiceId | voice_gr | Suppress ('|') grand_staff = oneOf ('{* {') + OneOrMore (simple_part) + Suppress ('}') part = Forward () part_seq = OneOrMore (part | Suppress ('|')) brace_gr = Suppress ('{') + part_seq + Suppress ('}') bracket_gr = Suppress ('[') + part_seq + Suppress ('\]') # closing brackets are escaped by splitHeaderVoices part << MatchFirst (simple_part | grand_staff | brace_gr | bracket_gr | Suppress ('|')) abc_scoredef = Suppress (oneOf ('staves score')) + OneOrMore (part) #--------------------------------------------------------------------------------- # ABC voice (not white space sensitive, beams detected in note/rest parse actions) #--------------------------------------------------------------------------------- inline_field = Suppress ('[') + (inf_fld | U_field | V_field) + Suppress (']') note_length = Optional (number, 1) + Group (ZeroOrMore ('/')) + Optional (number, 2) octaveHigh = OneOrMore ("'").setParseAction (lambda t: len(t)) octaveLow = OneOrMore (',').setParseAction (lambda t: -len(t)) octave = octaveHigh | octaveLow basenote = oneOf ('C D E F G A B c d e f g a b y') # includes spacer for parse efficiency accidental = oneOf ('^^ __ ^ _ =') rest_sym = oneOf ('x X z Z') slur_beg = oneOf ('( .(') + ~Word (nums) # no tuplet_start slur_ends = OneOrMore (oneOf (') .)')) long_decoration = Combine (oneOf ('! +') + CharsNotIn ('!+ \n') + oneOf ('! +')) staccato = Literal ('.') + ~Literal ('|') # avoid dotted barline decoration = staccato | userdef_symbol | long_decoration | slur_beg decorations = OneOrMore (decoration) staff_decos = decorations + ~oneOf (': | [|] []') tie = oneOf ('.- -') rest = Optional (accidental) + rest_sym + note_length pitch = Optional (accidental) + basenote + Optional (octave, 0) note = pitch + note_length + Optional (tie) + Optional (slur_ends) chord_note = Optional (decorations) + pitch + note_length + Optional (tie) + Optional (slur_ends) chord_notes = OneOrMore (chord_note | rest | b1) grace_notes = Forward () chord = Suppress ('[') + OneOrMore (chord_notes | grace_notes) + Suppress (']') + note_length + Optional (tie) + Optional (slur_ends) stem = note | chord | rest broken = Combine (OneOrMore ('<') | OneOrMore ('>')) tuplet_num = Suppress ('(') + number tuplet_into = Suppress (':') + Optional (number, 0) tuplet_notes = Suppress (':') + Optional (number, 0) tuplet_start = tuplet_num + Optional (tuplet_into + Optional (tuplet_notes)) acciaccatura = Literal ('/') grace_stem = Optional (decorations) + stem grace_notes << Group (Suppress ('{') + Optional (acciaccatura) + OneOrMore (grace_stem) + Suppress ('}')) text_expression = Optional (oneOf ('^ _ < > @'), '^') + Optional (CharsNotIn ('"'), "") chord_accidental = oneOf ('# b =') triad = oneOf ('ma Maj maj M mi min m aug dim o + -') seventh = oneOf ('7 ma7 Maj7 M7 maj7 mi7 m7 dim7 o7 -7 aug7 +7 m7b5 mi7b5') sixth = oneOf ('6 ma6 M6 m6 mi6') ninth = oneOf ('9 ma9 M9 maj9 Maj9 mi9 m9') elevn = oneOf ('11 ma11 M11 maj11 Maj11 mi m11') suspended = oneOf ('sus sus2 sus4') chord_degree = Combine (Optional (chord_accidental) + oneOf ('2 4 5 6 7 9 11 13')) chord_kind = Optional (seventh | sixth | ninth | elevn | triad, '_') + Optional (suspended) chord_root = oneOf ('C D E F G A B') + Optional (chord_accidental) chord_bass = oneOf ('C D E F G A B') + Optional (chord_accidental) # needs a different parse action chordsym = chord_root + chord_kind + ZeroOrMore (chord_degree) + Optional (Suppress ('/') + chord_bass) chord_sym = chordsym + Optional (Literal ('(') + CharsNotIn (')') + Literal (')')).suppress () chord_or_text = Suppress ('"') + (chord_sym ^ text_expression) + Suppress ('"') volta_nums = Optional ('[').suppress () + Combine (Word (nums) + ZeroOrMore (oneOf (', -') + Word (nums))) volta_text = Literal ('[').suppress () + Regex (r'"[^"]+"') volta = volta_nums | volta_text invisible_barline = oneOf ('[|] []') dashed_barline = oneOf (': .|') double_rep = Literal (':') + FollowedBy (':') # otherwise ambiguity with dashed barline voice_overlay = Combine (OneOrMore ('&')) bare_volta = FollowedBy (Literal ('[') + Word (nums)) # no barline, but volta follows (volta is parsed in next measure) bar_left = (oneOf ('[|: |: [: :') + Optional (volta)) | Optional ('|').suppress () + volta | oneOf ('| [|') bars = ZeroOrMore (':') + ZeroOrMore ('[') + OneOrMore (oneOf ('| ]')) bar_right = Optional (decorations) + (invisible_barline | double_rep | Combine (bars) | dashed_barline | voice_overlay | bare_volta) errors = ~bar_right + Optional (Word (' \n')) + CharsNotIn (':&|', exact=1) linebreak = Literal ('$') | ~decorations + Literal ('!') # no need for I:linebreak !!! element = inline_field | broken | staff_decos | stem | chord_or_text | grace_notes | tuplet_start | linebreak | errors measure = Group (ZeroOrMore (inline_field) + Optional (bar_left) + ZeroOrMore (element) + bar_right + Optional (linebreak)) noBarMeasure = Group (ZeroOrMore (inline_field) + Optional (bar_left) + OneOrMore (element) + Optional (linebreak)) abc_voice = ZeroOrMore (measure) + Optional (noBarMeasure | Group (bar_left)) + ZeroOrMore (inline_field).suppress () + StringEnd () #---------------------------------------- # ABC lyric lines (white space sensitive) #---------------------------------------- skip_note = oneOf ('* - ~') extend_note = Literal ('_') measure_end = Literal ('|') syl_chars = CharsNotIn ('*~-_| \t\n') white = Word (' \t') syllable = Combine (Optional ('~') + syl_chars + ZeroOrMore (Literal ('~') + syl_chars)) + Optional ('-') lyr_elem = (syllable | skip_note | extend_note | measure_end) + Optional (white).suppress () lyr_head = (Literal ('w:') + Optional (white)).suppress () lyr_line = Group (lyr_head + ZeroOrMore (lyr_elem) + LineEnd ().suppress ()) #---------------------------------------------------------------- # Parse actions to convert all relevant results into an abstract # syntax tree where all tree nodes are instances of pObj #---------------------------------------------------------------- ifield.setParseAction (lambda t: pObj ('field', t)) grand_staff.setParseAction (lambda t: pObj ('grand', t, 1)) # 1 = keep ordered list of results brace_gr.setParseAction (lambda t: pObj ('bracegr', t, 1)) bracket_gr.setParseAction (lambda t: pObj ('bracketgr', t, 1)) voice_gr.setParseAction (lambda t: pObj ('voicegr', t, 1)) voiceId.setParseAction (lambda t: pObj ('vid', t, 1)) abc_scoredef.setParseAction (lambda t: pObj ('score', t, 1)) note_length.setParseAction (lambda t: pObj ('dur', (t[0], (t[2] << len (t[1])) >> 1))) chordsym.setParseAction (lambda t: pObj ('chordsym', t)) chord_root.setParseAction (lambda t: pObj ('root', t)) chord_kind.setParseAction (lambda t: pObj ('kind', t)) chord_degree.setParseAction (lambda t: pObj ('degree', t)) chord_bass.setParseAction (lambda t: pObj ('bass', t)) text_expression.setParseAction (lambda t: pObj ('text', t)) inline_field.setParseAction (lambda t: pObj ('inline', t)) grace_notes.setParseAction (doGrace) # (lambda t: pObj ('grace', t)) acciaccatura.setParseAction (lambda t: pObj ('accia', t)) note.setParseAction (noteActn) chord_note.setParseAction (noteActn) rest.setParseAction (restActn) decorations.setParseAction (lambda t: pObj ('deco', t)) slur_ends.setParseAction (lambda t: pObj ('slurs', t)) chord.setParseAction (lambda t: pObj ('chord', t)) tie.setParseAction (lambda t: pObj ('tie', t)) pitch.setParseAction (lambda t: pObj ('pitch', t)) bare_volta.setParseAction (lambda t: ['|']) # return barline that user forgot dashed_barline.setParseAction (lambda t: ['.|']) bar_right.setParseAction (lambda t: pObj ('rbar', t)) bar_left.setParseAction (lambda t: pObj ('lbar', t)) broken.setParseAction (lambda t: pObj ('broken', t)) tuplet_start.setParseAction (lambda t: pObj ('tup', t)) linebreak.setParseAction (lambda t: pObj ('linebrk', t)) measure.setParseAction (doMaat) noBarMeasure.setParseAction (doMaat) syllable.setParseAction (lambda t: pObj ('syl', t)) skip_note.setParseAction (lambda t: pObj ('skip', t)) extend_note.setParseAction (lambda t: pObj ('ext', t)) measure_end.setParseAction (lambda t: pObj ('sbar', t)) b1.setParseAction (errorWarn) errors.setParseAction (errorWarn) lyr_block = OneOrMore (lyr_line).leaveWhitespace () # after leaveWhiteSpace no more parse actions can be set!! return abc_header, abc_voice, lyr_block, abc_scoredef class pObj (object): # every relevant parse result is converted into a pObj def __init__ (s, name, t, seq=0): # t = list of nested parse results s.name = name # name uniqueliy identifies this pObj rest = [] # collect parse results that are not a pObj attrs = {} # new attributes for x in t: # nested pObj's become attributes of this pObj if type (x) == pObj: attrs [x.name] = attrs.get (x.name, []) + [x] else: rest.append (x) # collect non-pObj's (mostly literals) for name, xs in attrs.items (): if len (xs) == 1: xs = xs[0] # only list if more then one pObj setattr (s, name, xs) # create the new attributes s.t = rest # all nested non-pObj's (mostly literals) s.objs = seq and t or [] # for nested ordered (lyric) pObj's def __repr__ (s): # make a nice string representation of a pObj r = [] for nm in dir (s): if nm.startswith ('_'): continue # skip build in attributes elif nm == 'name': continue # redundant else: x = getattr (s, nm) if not x: continue # s.t may be empty (list of non-pObj's) if type (x) == types.ListType: r.extend (x) else: r.append (x) xs = [] for x in r: # recursively call __repr__ and convert all strings to latin-1 if isinstance (x, types.StringTypes): try: xs.append (x.encode ('latin-1')) except: xs.append (repr (x)) # string -> no recursion else: xs.append (repr (x)) # pObj -> recursive call return '(' + s.name + ' ' +','.join (xs) + ')' global prevloc # global to remember previous match position of a note/rest prevloc = 0 def detectBeamBreak (line, loc, t): global prevloc # location in string 'line' of previous note match xs = line[prevloc:loc+1] # string between previous and current note match xs = xs.lstrip () # first note match starts on a space! prevloc = loc # location in string 'line' of current note match b = pObj ('bbrk', [' ' in xs]) # space somewhere between two notes -> beambreak t.insert (0, b) # insert beambreak as a nested parse result def noteActn (line, loc, t): # detect beambreak between previous and current note/rest if 'y' in t[0].t: return [] # discard spacer detectBeamBreak (line, loc, t) # adds beambreak to parse result t as side effect return pObj ('note', t) def restActn (line, loc, t): # detect beambreak between previous and current note/rest detectBeamBreak (line, loc, t) # adds beambreak to parse result t as side effect return pObj ('rest', t) def errorWarn (line, loc, t): # warning for misplaced symbols and skip them info ('**misplaced symbol: %s' % t[0], warn=0) lineCopy = line [:] if loc > 40: lineCopy = line [loc - 40: loc + 40] loc = 40 info (lineCopy.replace ('\n', ' '), warn=0) info (loc * '-' + '^', warn=0) return [] #------------------------------------------------------------- # transformations of a measure (called by parse action doMaat) #------------------------------------------------------------- def simplify (a, b): # divide a and b by their greatest common divisor x, y = a, b while b: a, b = b, a % b return x / a, y / a def doBroken (prev, brk, x): if not prev: info ('error in broken rhythm: %s' % x); return # no changes nom1, den1 = prev.dur.t # duration of first note/chord nom2, den2 = x.dur.t # duration of second note/chord if brk == '>': nom1, den1 = simplify (3 * nom1, 2 * den1) nom2, den2 = simplify (1 * nom2, 2 * den2) elif brk == '<': nom1, den1 = simplify (1 * nom1, 2 * den1) nom2, den2 = simplify (3 * nom2, 2 * den2) elif brk == '>>': nom1, den1 = simplify (7 * nom1, 4 * den1) nom2, den2 = simplify (1 * nom2, 4 * den2) elif brk == '<<': nom1, den1 = simplify (1 * nom1, 4 * den1) nom2, den2 = simplify (7 * nom2, 4 * den2) else: return # give up prev.dur.t = nom1, den1 # change duration of previous note/chord x.dur.t = nom2, den2 # and current note/chord def convertBroken (t): # convert broken rhythms to normal note durations prev = None # the last note/chord before the broken symbol brk = '' # the broken symbol remove = [] # indexes to broken symbols (to be deleted) in measure for i, x in enumerate (t): # scan all elements in measure if x.name == 'note' or x.name == 'chord' or x.name == 'rest': if brk: # a broken symbol was encountered before doBroken (prev, brk, x) # change duration previous note/chord/rest and current one brk = '' else: prev = x # remember the last note/chord/rest elif x.name == 'broken': brk = x.t[0] # remember the broken symbol (=string) remove.insert (0, i) # and its index, highest index first for i in remove: del t[i] # delete broken symbols from high to low def convertChord (t): # convert chord to sequence of notes in musicXml-style ins = [] for i, x in enumerate (t): if x.name == 'chord': if hasattr (x, 'rest') and not hasattr (x, 'note'): # chords containing only rests if type (x.rest) == types.ListType: x.rest = x.rest[0] # more rests == one rest ins.insert (0, (i, [x.rest])) # just output a single rest, no chord continue num1, den1 = x.dur.t # chord duration tie = getattr (x, 'tie', None) # chord tie slurs = getattr (x, 'slurs', []) # slur endings deco = getattr (x, 'deco', []) # chord decorations if type (x.note) != types.ListType: x.note = [x.note] # when chord has only one note ... for j, nt in enumerate (x.note): # all notes of the chord num2, den2 = nt.dur.t # note duration * chord duration nt.dur.t = simplify (num1 * num2, den1 * den2) if tie: nt.tie = tie # tie on all chord notes if j == 0 and deco: nt.deco = deco # decorations only on first chord note if j == 0 and slurs: nt.slurs = slurs # slur endings only on first chord note if j > 0: nt.chord = pObj ('chord', [1]) # label all but first as chord notes else: # remember all pitches of the chord in the first note pitches = [n.pitch for n in x.note] # to implement conversion of erroneous ties to slurs nt.pitches = pObj ('pitches', pitches) ins.insert (0, (i, x.note)) # high index first for i, notes in ins: # insert from high to low for nt in reversed (notes): t.insert (i+1, nt) # insert chord notes after chord del t[i] # remove chord itself def doMaat (t): # t is a Group() result -> the measure is in t[0] convertBroken (t[0]) # remove all broken rhythms and convert to normal durations convertChord (t[0]) # replace chords by note sequences in musicXML style def doGrace (t): # t is a Group() result -> the grace sequence is in t[0] convertChord (t[0]) # a grace sequence may have chords for nt in t[0]: # flag all notes within the grace sequence if nt.name == 'note': nt.grace = 1 # set grace attribute return t[0] # ungroup the parse result #-------------------- # musicXML generation #---------------------------------- def compChordTab (): # avoid some typing work: returns mapping constant {ABC chordsyms -> musicXML kind} maj, min, aug, dim, dom, ch7, ch6, ch9, ch11, hd = 'major minor augmented diminished dominant -seventh -sixth -ninth -11th half-diminished'.split () triad = zip ('ma Maj maj M mi min m aug dim o + -'.split (), [maj, maj, maj, maj, min, min, min, aug, dim, dim, aug, min]) seventh = zip ('7 ma7 Maj7 M7 maj7 mi7 m7 dim7 o7 -7 aug7 +7 m7b5 mi7b5'.split (), [dom, maj+ch7, maj+ch7, maj+ch7, maj+ch7, min+ch7, min+ch7, dim+ch7, dim+ch7, min+ch7, aug+ch7, aug+ch7, hd, hd]) sixth = zip ('6 ma6 M6 mi6 m6'.split (), [maj+ch6, maj+ch6, maj+ch6, min+ch6, min+ch6]) ninth = zip ('9 ma9 M9 maj9 Maj9 mi9 m9'.split (), [dom+ch9, maj+ch9, maj+ch9, maj+ch9, maj+ch9, min+ch9, min+ch9]) elevn = zip ('11 ma11 M11 maj11 Maj11 mi11 m11'.split (), [dom+ch11, maj+ch11, maj+ch11, maj+ch11, maj+ch11, min+ch11, min+ch11]) return dict (triad + seventh + sixth + ninth + elevn) def addElem (parent, child, level): indent = 2 chldrn = parent.getchildren () if chldrn: chldrn[-1].tail += indent * ' ' else: parent.text = '\n' + level * indent * ' ' parent.append (child) child.tail = '\n' + (level-1) * indent * ' ' def addElemT (parent, tag, text, level): e = E.Element (tag) e.text = text addElem (parent, e, level) def mkTmod (tmnum, tmden, lev): tmod = E.Element ('time-modification') addElemT (tmod, 'actual-notes', str (tmnum), lev + 1) addElemT (tmod, 'normal-notes', str (tmden), lev + 1) return tmod def addDirection (parent, elem, lev, gstaff, subelms=[], placement='below', cue_on=0): dir = E.Element ('direction', placement=placement) addElem (parent, dir, lev) typ = E.Element ('direction-type') addElem (dir, typ, lev + 1) addElem (typ, elem, lev + 2) for subel in subelms: addElem (elem, subel, lev + 3) if cue_on: addElem (dir, E.Element ('level', size='cue'), lev + 1) if gstaff: addElemT (dir, 'staff', str (gstaff), lev + 1) return dir def removeElems (root_elem, parent_str, elem_str): for p in root_elem.findall (parent_str): e = p.find (elem_str) if e != None: p.remove (e) def alignLyr (vce, lyrs): empty_el = pObj ('leeg', '*') for k, lyr in enumerate (lyrs): # lyr = one full line of lyrics i = 0 # syl counter for msre in vce: # reiterate the voice block for each lyrics line for elem in msre: if elem.name == 'note' and not (hasattr (elem, 'chord') or hasattr (elem, 'grace')): if i >= len (lyr): lr = empty_el else: lr = lyr [i] elem.objs.append (lr) if lr.name != 'sbar': i += 1 if i < len (lyr) and lyr[i].name == 'sbar': i += 1 return vce slur_move = re.compile (r'(?<![!+])([}><][<>]?)(\)+)') # (?<!...) means: not preceeded by ... mm_rest = re.compile (r'([XZ])(\d+)') bar_space = re.compile (r'([:|][ |\[\]]+[:|])') # barlines with spaces def fixSlurs (x): # repair slurs when after broken sign or grace-close def f (mo): # replace a multi-measure rest by single measure rests n = int (mo.group (2)) return (n * (mo.group (1) + '|')) [:-1] def g (mo): # squash spaces in barline expressions return mo.group (1).replace (' ','') x = mm_rest.sub (f, x) x = bar_space.sub (g, x) return slur_move.sub (r'\2\1', x) def splitHeaderVoices (abctext): r1 = re.compile (r'%.*$') # comments r2 = re.compile (r'^[A-Z]:.*$') # information field r3 = re.compile (r'^%%(?=[^%])') # directive: ^%% folowed by not a % xs, nx = [], 0 for x in abctext.splitlines (): x = x.strip () if not x and nx == 1: break # end of tune x = r3.sub ('I:', x) # replace %% -> I: x2 = r1.sub ('', x) # remove comment while x2.endswith ('*'): x2 = x2[:-1] # remove old syntax for right adjusting if not x2: continue # empty line if x2[:2] == 'W:': continue # skip W: lyrics if x2[:2] == 'w:' and xs[-1][-1] == '\\': xs[-1] = xs[-1][:-1] # ignore line continuation before lyrics line ro = r2.match (x2) if ro: # field -> inline_field, escape all ']' if x2[-1] == '\\': x2 = x2[:-1] # ignore continuation after field line x2 = '[' + x2.replace (']',r'\]') + ']' if x2[:2] == '+:': # new style continuation xs[-1] += x2[2:] elif xs and xs[-1][-1] == '\\': # old style continuation xs[-1] = xs[-1][:-1] + x2 else: # skip lines (except I:) until first X: if x.startswith ('X:'): if nx == 1: break # second tune starts without an empty line !! nx = 1 # start of first tune if nx == 1 or x.startswith ('I:'): xs.append (x2) if xs and xs[-1][-1] == '\\': # nothing left to continue with, remove last continuation xs[-1] = xs[-1][:-1] r1 = re.compile (r'\[[A-Z]:(\\.|[^]\\])*\]') # inline field with escaped ']' r2 = re.compile (r'\[K:') # start of K: field r3 = re.compile (r'\[V:|\[I:MIDI') # start of V: field or midi field fields, voices, b = [], [], 0 for i, x in enumerate (xs): n = len (r1.sub ('', x)) # remove all inline fields if n > 0: b = 1; break # real abc present -> end of header if r2.search (x): # start of K: field fields.append (x) i += 1; b = 1 break # first K: field -> end of header if r3.search (x): # start of V: field voices.append (x) else: fields.append (x) if b: voices += xs[i:] else: voices += [] # tune has only header fields header = '\n'.join (fields) abctext = '\n'.join (voices) xs = abctext.split ('[V:') if len (xs) == 1: abctext = '[V:1]' + abctext # abc has no voice defs at all elif r1.sub ('', xs[0]).strip (): # remove inline fields from starting text, if any abctext = '[V:1]' + abctext # abc with voices has no V: at start r1 = re.compile (r'\[V:\s*(\S*)[ \]]') # get voice id from V: field (skip spaces betwee V: and ID) vmap = {} # {voice id -> [voice abc string]} vorder = {} # mark document order of voices xs = re.split (r'(\[V:[^]]*\])', abctext) # split on every V-field (V-fields included in split result list) if len (xs) == 1: raise (Exception ('bugs ...')) else: header += xs[0] # xs[0] = text between K: and first V:, normally empty, but we put it in the header i = 1 while i < len (xs): # xs = ['', V-field, voice abc, V-field, voice abc, ...] vce, abc = xs[i:i+2] id = r1.search (vce).group (1) # get voice ID from V-field vmap[id] = vmap.get (id, []) + [vce, abc] # collect abc-text for each voice id (include V-fields) if id not in vorder: vorder [id] = i # store document order of first occurrence of voice id i += 2 voices = [] ixs = sorted ([(i, id) for id, i in vorder.items ()]) # restore document order of voices for i, id in ixs: voice = ''.join (vmap [id]) # all abc of one voice xs = re.split (r'((?:\nw:[^\n]*)+)', voice) # split voice into voice-lyrics blocks if len (xs) == 1: # no lyrics voice = fixSlurs (xs[0]) # put slurs right after the notes vce_lyr = [[voice, '']] else: if xs[-1].strip () != '': xs.append ('w:') # last block had no lyrics vce_lyr = [] # [[voice, lyrics],[],...] list of voice-lyrics blocks for k in range (0, len (xs) - 1, 2): voice, lyrics = xs [k:k+2] voice = fixSlurs (voice) # put slurs right after the notes vce_lyr.append ((voice, lyrics)) voices.append ((id, vce_lyr)) return header, voices def mergeMeasure (m1, m2, slur_offset, voice_offset, is_grand=0): slurs = m2.findall ('note/notations/slur') for slr in slurs: slrnum = int (slr.get ('number')) + slur_offset slr.set ('number', str (slrnum)) # make unique slurnums in m2 vs = m2.findall ('note/voice') # set all voice number elements in m2 for v in vs: v.text = str (voice_offset + int (v.text)) ls = m1.findall ('note/lyric') # all lyric elements in m1 lnum_max = max ([int (l.get ('number')) for l in ls] + [0]) # highest lyric number in m1 ls = m2.findall ('note/lyric') # update lyric elements in m2 for el in ls: n = int (el.get ('number')) el.set ('number', str (n + lnum_max)) ns = m1.findall ('note') # determine the total duration of m1, subtract all backups dur1 = sum (int (n.find ('duration').text) for n in ns if n.find ('grace') == None and n.find ('chord') == None) dur1 -= sum (int (b.text) for b in m1.findall ('backup/duration')) nns, es = 0, [] # nns = number of real notes in m2 for e in m2.getchildren (): # scan all elements of m2 if e.tag == 'attributes': if not is_grand: continue # no attribute merging for normal voices else: nns += 1 # but we do merge (clef) attributes for a grand staff if e.tag == 'print': continue if e.tag == 'note' and (mxm.gmwr or e.find ('rest') == None): nns += 1 es.append (e) # buffer elements to be merged if nns > 0: # only merge if m2 contains any real notes if dur1 > 0: # only insert backup if duration of m1 > 0 b = E.Element ('backup') addElem (m1, b, level=3) addElemT (b, 'duration', str (dur1), level=4) for e in es: addElem (m1, e, level=3) # merge buffered elements of m2 def mergePartList (parts, is_grand=0): # merge parts, make grand staff when is_grand true def delAttrs (part): # for the time being we only keep clef attributes xs = [(m, e) for m in part.findall ('measure') for e in m.findall ('attributes')] for m, e in xs: for c in e.getchildren (): if c.tag == 'clef': continue # keep clef attribute e.remove (c) # delete all other attrinutes for higher staff numbers if len (e.getchildren ()) == 0: m.remove (e) # remove empty attributes element p1 = parts[0] for p2 in parts[1:]: if is_grand: delAttrs (p2) # delete all attributes except clef for i in range (len (p1) + 1, len (p2) + 1): # second part longer than first one maat = E.Element ('measure', number = str(i)) # append empty measures addElem (p1, maat, 2) slurs = p1.findall ('measure/note/notations/slur') # find highest slur num in first part slur_max = max ([int (slr.get ('number')) for slr in slurs] + [0]) vs = p1.findall ('measure/note/voice') # all voice number elements in first part vnum_max = max ([int (v.text) for v in vs] + [0]) # highest voice number in first part for im, m2 in enumerate (p2.findall ('measure')): # merge all measures of p2 into p1 mergeMeasure (p1[im], m2, slur_max, vnum_max, is_grand) # may change slur numbers in p1 return p1 def mergeParts (parts, vids, staves, is_grand=0): if not staves: return parts, vids # no voice mapping partsnew, vidsnew = [], [] for voice_ids in staves: pixs = [] for vid in voice_ids: if vid in vids: pixs.append (vids.index (vid)) else: info ('score partname %s does not exist' % vid) if pixs: xparts = [parts[pix] for pix in pixs] if len (xparts) > 1: mergedpart = mergePartList (xparts, is_grand) else: mergedpart = xparts [0] partsnew.append (mergedpart) vidsnew.append (vids [pixs[0]]) return partsnew, vidsnew def mergePartMeasure (part, msre, ovrlaynum): # merge msre into last measure of part, only for overlays slurs = part.findall ('measure/note/notations/slur') # find highest slur num in part slur_max = max ([int (slr.get ('number')) for slr in slurs] + [0]) last_msre = part.getchildren ()[-1] # last measure in part mergeMeasure (last_msre, msre, slur_max, ovrlaynum) # voice offset = s.overlayVNum def setFristVoiceNameFromGroup (vids, vdefs): # vids = [vid], vdef = {vid -> (name, subname, voicedef)} vids = [v for v in vids if v in vdefs] # only consider defined voices if not vids: return vdefs vid0 = vids [0] # first vid of the group _, _, vdef0 = vdefs [vid0] # keep de voice definition (vdef0) when renaming vid0 for vid in vids: nm, snm, vdef = vdefs [vid] if nm: # first non empty name encountered will become vdefs [vid0] = nm, snm, vdef0 # name of merged group == name of first voice in group (vid0) break return vdefs def mkGrand (p, vdefs): # transform parse subtree into list needed for s.grands xs = [] for i, x in enumerate (p.objs): # changing p.objs [i] alters the tree. changing x has no effect on the tree. if type (x) == pObj: us = mkGrand (x, vdefs) # first get transformation results of current pObj if x.name == 'grand': # x.objs contains ordered list of nested parse results within x vids = [y.objs[0] for y in x.objs[1:]] # the voice ids in the grand staff nms = [vdefs [u][0] for u in vids if u in vdefs] # the names of those voices accept = sum ([1 for nm in nms if nm]) == 1 # accept as grand staff when only one of the voices has a name if accept or us[0] == '{*': xs.append (us[1:]) # append voice ids as a list (discard first item '{' or '{*') vdefs = setFristVoiceNameFromGroup (vids, vdefs) p.objs [i] = x.objs[1] # replace voices by first one in the grand group (this modifies the parse tree) else: xs.extend (us[1:]) # extend current result with all voice ids of rejected grand staff else: xs.extend (us) # extend current result with transformed pObj else: xs.append (p.t[0]) # append the non pObj (== voice id string) return xs def mkStaves (p, vdefs): # transform parse tree into list needed for s.staves xs = [] for i, x in enumerate (p.objs): # structure and comments identical to mkGrand if type (x) == pObj: us = mkStaves (x, vdefs) if x.name == 'voicegr': xs.append (us) vids = [y.objs[0] for y in x.objs] vdefs = setFristVoiceNameFromGroup (vids, vdefs) p.objs [i] = x.objs[0] else: xs.extend (us) else: if p.t[0] not in '{*': xs.append (p.t[0]) return xs def mkGroups (p): # transform parse tree into list needed for s.groups xs = [] for x in p.objs: if type (x) == pObj: if x.name == 'vid': xs.extend (mkGroups (x)) elif x.name == 'bracketgr': xs.extend (['['] + mkGroups (x) + [']']) elif x.name == 'bracegr': xs.extend (['{'] + mkGroups (x) + ['}']) else: xs.extend (mkGroups (x) + ['}']) # x.name == 'grand' == rejected grand staff else: xs.append (p.t[0]) return xs class MusicXml: typeMap = {1:'long', 2:'breve', 4:'whole', 8:'half', 16:'quarter', 32:'eighth', 64:'16th', 128:'32nd', 256:'64th'} dynaMap = {'p':1,'pp':1,'ppp':1,'f':1,'ff':1,'fff':1,'mp':1,'mf':1,'sfz':1} wedgeMap = {'>(':1, '>)':1, '<(':1,'<)':1,'crescendo(':1,'crescendo)':1,'diminuendo(':1,'diminuendo)':1} artMap = {'.':'staccato','>':'accent','accent':'accent','wedge':'staccatissimo','tenuto':'tenuto'} ornMap = {'trill':'trill-mark','T':'trill-mark','turn':'turn','uppermordent':'inverted-mordent','lowermordent':'mordent', 'pralltriller':'inverted-mordent','mordent':'mordent','turn':'turn','invertedturn':'inverted-turn'} tecMap = {'upbow':'up-bow', 'downbow':'down-bow'} capoMap = {'fine':('Fine','fine','yes'), 'D.S.':('D.S.','dalsegno','segno'), 'D.C.':('D.C.','dacapo','yes'),'dacapo':('D.C.','dacapo','yes'), 'dacoda':('To Coda','tocoda','coda'), 'coda':('coda','coda','coda'), 'segno':('segno','segno','segno')} sharpness = ['Fb', 'Cb','Gb','Db','Ab','Eb','Bb','F','C','G','D','A', 'E', 'B', 'F#','C#','G#','D#','A#','E#','B#'] offTab = {'maj':8, 'm':11, 'min':11, 'mix':9, 'dor':10, 'phr':12, 'lyd':7, 'loc':13} modTab = {'maj':'major', 'm':'minor', 'min':'minor', 'mix':'mixolydian', 'dor':'dorian', 'phr':'phrygian', 'lyd':'lydian', 'loc':'locrian'} clefMap = { 'alto1':('C','1'), 'alto2':('C','2'), 'alto':('C','3'), 'alto4':('C','4'), 'tenor':('C','4'), 'bass3':('F','3'), 'bass':('F','4'), 'treble':('G','2'), 'perc':('percussion',''), 'none':('','')} clefLineMap = {'B':'treble', 'G':'alto1', 'E':'alto2', 'C':'alto', 'A':'tenor', 'F':'bass3', 'D':'bass'} alterTab = {'=':'0', '_':'-1', '__':'-2', '^':'1', '^^':'2'} accTab = {'=':'natural', '_':'flat', '__':'flat-flat', '^':'sharp', '^^':'sharp-sharp'} chordTab = compChordTab () uSyms = {'~':'roll', 'H':'fermata','L':'>','M':'lowermordent','O':'coda', 'P':'uppermordent','S':'segno','T':'trill','u':'upbow','v':'downbow'} pageFmtDef = [1.764,297,210,10,10,10,10] # the MuseScore page formatting defaults for A4 creditTab = {'O':'origin', 'A':'area', 'Z':'transcription', 'N':'notes', 'G':'group', 'H':'history', 'R':'rhythm', 'B':'book', 'D':'discography', 'F':'fileurl', 'S':'source'} def __init__ (s): s.pageFmtCmd = [] # set by command line option -p s.gmwr = 0 # set by command line option -r s.reset () def reset (s): s.divisions = 120 # xml duration of 1/4 note s.ties = {} # {abc pitch tuple -> alteration} for all open ties s.slurstack = [] # stack of open slur numbers s.slurbeg = 0 # number of slurs to start (when slurs are detected at element-level) s.tmnum = 0 # time modification, numerator s.tmden = 0 # time modification, denominator s.ntup = 0 # number of tuplet notes remaining s.tupnts = [] # all tuplet modifiers with corresp. durations: [(duration, modifier), ...] s.irrtup = 0 # 1 if an irregular tuplet s.ntype = '' # the normal-type of a tuplet (== duration type of a normal tuplet note) s.unitL = (1, 8) # default unit length s.unitLcur = (1, 8) # unit length of current voice s.keyAlts = {} # alterations implied by key s.msreAlts = {} # temporarily alterations s.curVolta = '' # open volta bracket s.slurstack = [] # stack of open slur numbers s.title = '' # title of music s.creator = {} # {creator-type -> creator string} s.credits = {} # {credit-type -> string} s.lyrdash = {} # {lyric number -> 1 if dash between syllables} s.usrSyms = s.uSyms # user defined symbols s.prevNote = None # xml element of previous beamed note to correct beams (start, continue) s.grcbbrk = False # remember any bbrk in a grace sequence s.linebrk = 0 # 1 if next measure should start with a line break s.bardecos = [] # barline decorations (coda, segno) that go into the next measure (MuseScore deficiency!) s.nextdecos = [] # decorations for the next note s.prevmsre = None # the previous measure s.supports_tag = 0 # issue supports-tag in xml file when abc uses explicit linebreaks s.staveDefs = [] # collected %%staves or %%score instructions from score s.staves = [] # staves = [[voice names to be merged into one stave]] s.groups = [] # list of merged part names with interspersed {[ and }] s.grands = [] # [[vid1, vid2, ..], ...] voiceIds to be merged in a grand staff s.gStaffNums = {} # map each voice id in a grand staff to a staff number s.gNstaves = {} # map each voice id in a grand staff to total number of staves s.pageFmtAbc = [] # formatting from abc directives s.mdur = (4,4) # duration of one measure s.gtrans = 0 # octave transposition (by clef) s.midprg = ['', ''] # MIDI channel nr, program nr for the current part s.vid = '' # abc voice id for the current part s.gcue_on = 0 # insert <cue/> tag in each note def mkPitch (s, acc, note, oct, lev): nUp = note.upper () octnum = (4 if nUp == note else 5) + int (oct) + s.gtrans pitch = E.Element ('pitch') addElemT (pitch, 'step', nUp, lev + 1) alter = '' if (note, oct) in s.ties: tied_alter, _, vnum = s.ties [(note,oct)] # vnum = overlay voice number when tie started if vnum == s.overlayVnum: alter = tied_alter # tied note in the same overlay -> same alteration elif acc: s.msreAlts [(nUp, octnum)] = s.alterTab [acc] alter = s.alterTab [acc] # explicit notated alteration elif (nUp, octnum) in s.msreAlts: alter = s.msreAlts [(nUp, octnum)] # temporary alteration elif nUp in s.keyAlts: alter = s.keyAlts [nUp] # alteration implied by the key if alter: addElemT (pitch, 'alter', alter, lev + 1) addElemT (pitch, 'octave', str (octnum), lev + 1) return pitch, alter def mkNote (s, n, lev): nnum, nden = n.dur.t # abc dutation of note if nden == 0: nden = 1 # occurs with illegal ABC like: "A2 1". Now interpreted as A2/1 num, den = simplify (nnum * s.unitLcur[0], nden * s.unitLcur[1]) # normalised with unit length if den > 64: # limit denominator to 64 num = int (round (64 * float (num) / den)) # scale note to num/64 num, den = simplify (max ([num, 1]), 64) # smallest num == 1 info ('duration too small: rounded to %d/%d' % (num, den)) if n.name == 'rest' and ('Z' in n.t or 'X' in n.t): num, den = s.mdur # duration of one measure dvs = (4 * s.divisions * num) / den # divisions is xml-duration of 1/4 rdvs = dvs # real duration (will be 0 for chord/grace) num, den = simplify (num, den * 4) # scale by 1/4 for s.typeMap ndot = 0 if num == 3: ndot = 1; den = den / 2 # look for dotted notes if num == 7: ndot = 2; den = den / 4 nt = E.Element ('note') if getattr (n, 'grace', ''): # a grace note (and possibly a chord note) grace = E.Element ('grace') if s.acciatura: grace.set ('slash', 'yes'); s.acciatura = 0 addElem (nt, grace, lev + 1) dvs = rdvs = 0 # no (real) duration for a grace note if den <= 16: den = 32 # not longer than 1/8 for a grace note if s.gcue_on: # insert cue tag cue = E.Element ('cue') addElem (nt, cue, lev + 1) if getattr (n, 'chord', ''): # a chord note chord = E.Element ('chord') addElem (nt, chord, lev + 1) rdvs = 0 # chord notes no real duration if rdvs and s.ntup >= 0: s.ntup -= 1 # count tuplet notes only on non-chord, non grace notes (rdvs > 0) if den not in s.typeMap: # take the nearest smaller legal duration info ('illegal duration %d/%d' % (nnum, nden)) den = min (x for x in s.typeMap.keys () if x > den) xmltype = str (s.typeMap [den]) # xml needs the note type in addition to duration acc, step, oct = '', 'C', '0' # abc-notated pitch elements (accidental, pitch step, octave) alter = '' # xml alteration if n.name == 'rest': if 'x' in n.t or 'X' in n.t: nt.set ('print-object', 'no') rest = E.Element ('rest') addElem (nt, rest, lev + 1) else: p = n.pitch.t # get pitch elements from parsed tokens if len (p) == 3: acc, step, oct = p else: step, oct = p pitch, alter = s.mkPitch (acc, step, oct, lev + 1) addElem (nt, pitch, lev + 1) if s.ntup >= 0: # modify duration for tuplet notes dvs = dvs * s.tmden / s.tmnum if dvs: addElemT (nt, 'duration', str (dvs), lev + 1) # skip when dvs == 0, requirement of musicXML inst = E.Element ('instrument', id='I-'+s.vid) # instrument id for midi if s.midprg != ['', '']: addElem (nt, inst, lev + 1) # only add when %%midi was present addElemT (nt, 'voice', '1', lev + 1) # default voice, for merging later addElemT (nt, 'type', xmltype, lev + 1) # add note type for i in range (ndot): # add dots dot = E.Element ('dot') addElem (nt, dot, lev + 1) ptup = (step, oct) # pitch tuple without alteration to check for ties tstop = ptup in s.ties and s.ties[ptup][2] == s.overlayVnum # open tie on this pitch tuple in this overlay if acc and not tstop: addElemT (nt, 'accidental', s.accTab [acc], lev + 1) # only add accidental if note not tied tupnotation = '' # start/stop notation element for tuplets if s.ntup >= 0: # add time modification element for tuplet notes tmod = mkTmod (s.tmnum, s.tmden, lev + 1) addElem (nt, tmod, lev + 1) if s.ntup > 0 and not s.tupnts: tupnotation = 'start' s.tupnts.append ((rdvs, tmod)) # remember all tuplet modifiers with corresp. durations if s.ntup == 0: # last tuplet note (and possible chord notes there after) if rdvs: tupnotation = 'stop' # only insert notation in the real note (rdvs > 0) s.cmpNormType (rdvs, lev + 1) # compute and/or add normal-type elements (-> s.ntype) gstaff = s.gStaffNums.get (s.vid, 0) # staff number of the current voice if gstaff: addElemT (nt, 'staff', str (gstaff), lev + 1) s.doBeams (n, nt, den, lev + 1) s.doNotations (n, ptup, alter, tupnotation, tstop, nt, lev + 1) if n.objs: s.doLyr (n, nt, lev + 1) return nt def cmpNormType (s, rdvs, lev): # compute the normal-type of a tuplet (only needed for Finale) if rdvs: # the last real tuplet note (chord notes can still follow afterwards with rdvs == 0) durs = [dur for dur, tmod in s.tupnts if dur > 0] ndur = sum (durs) / s.tmnum # duration of the normal type s.irrtup = any ((dur != ndur) for dur in durs) # irregular tuplet tix = 16 * s.divisions / ndur # index in typeMap of normal-type duration if tix in s.typeMap: s.ntype = str (s.typeMap [tix]) # the normal-type else: s.irrtup = 0 # give up, no normal type possible if s.irrtup: # only add normal-type for irregular tuplets for dur, tmod in s.tupnts: # add normal-type to all modifiers addElemT (tmod, 'normal-type', s.ntype, lev + 1) s.tupnts = [] # reset the tuplet buffer def doNotations (s, n, ptup, alter, tupnotation, tstop, nt, lev): slurs = getattr (n, 'slurs', 0) # slur ends pts = getattr (n, 'pitches', []) # all chord notes available in the first note if pts: # make list of pitches in chord: [(pitch, octave), ..] if type (pts.pitch) == pObj: pts = [pts.pitch] # chord with one note else: pts = [tuple (p.t[-2:]) for p in pts.pitch] # normal chord for pt, (tie_alter, nts, vnum) in s.ties.items (): # scan all open ties and delete illegal ones if vnum != s.overlayVnum: continue # tie belongs to different overlay if pts and pt in pts: continue # pitch tuple of tie exists in chord if getattr (n, 'chord', 0): continue # skip chord notes if pt == ptup: continue # skip correct single note tie if getattr (n, 'grace', 0): continue # skip grace notes info ('tie between different pitches: %s%s converted to slur' % pt) del s.ties [pt] # remove the note from pending ties e = [t for t in nts.findall ('tied') if t.get ('type') == 'start'][0] # get the tie start element e.tag = 'slur' # convert tie into slur slurnum = len (s.slurstack) + 1 s.slurstack.append (slurnum) e.set ('number', str (slurnum)) if slurs: slurs.t.append (')') # close slur on this note else: slurs = pObj ('slurs', [')']) tstart = getattr (n, 'tie', 0) # start a new tie decos = s.nextdecos # decorations encountered so far ndeco = getattr (n, 'deco', 0) # possible decorations of notes of a chord if ndeco: # add decorations, translate used defined symbols decos += [s.usrSyms.get (d, d).strip ('!+') for d in ndeco.t] s.nextdecos = [] if not (tstop or tstart or decos or slurs or s.slurbeg or tupnotation): return nt nots = E.Element ('notations') # notation element needed if tupnotation: # add tuplet type tup = E.Element ('tuplet', type=tupnotation) if tupnotation == 'start': tup.set ('bracket', 'yes') addElem (nots, tup, lev + 1) if tstop: # stop tie del s.ties[ptup] # remove flag tie = E.Element ('tied', type='stop') addElem (nots, tie, lev + 1) if tstart: # start a tie s.ties[ptup] = (alter, nots, s.overlayVnum) # remember pitch tuple to stop tie and apply same alteration tie = E.Element ('tied', type='start') addElem (nots, tie, lev + 1) if decos: # look for slurs and decorations arts = [] # collect articulations for d in decos: # do all slurs and decos if d == '(': s.slurbeg += 1; continue # slurs made in while loop at the end elif d == 'fermata' or d == 'H': ntn = E.Element ('fermata', type='upright') elif d == 'arpeggio': ntn = E.Element ('arpeggiate', number='1') else: arts.append (d); continue addElem (nots, ntn, lev + 1) if arts: # do only note articulations and collect staff annotations in xmldecos rest = s.doArticulations (nots, arts, lev + 1) if rest: info ('unhandled note decorations: %s' % rest) while s.slurbeg > 0: s.slurbeg -= 1 slurnum = len (s.slurstack) + 1 s.slurstack.append (slurnum) ntn = E.Element ('slur', number='%d' % slurnum, type='start') addElem (nots, ntn, lev + 1) if slurs: # these are only slur endings for d in slurs.t: if not s.slurstack: break # no more open slurs slurnum = s.slurstack.pop () slur = E.Element ('slur', number='%d' % slurnum, type='stop') addElem (nots, slur, lev + 1) if nots.getchildren() != []: # only add notations if not empty addElem (nt, nots, lev) def doArticulations (s, nots, arts, lev): decos = [] for a in arts: if a in s.artMap: art = E.Element ('articulations') addElem (nots, art, lev) addElem (art, E.Element (s.artMap[a]), lev + 1) elif a in s.ornMap: orn = E.Element ('ornaments') addElem (nots, orn, lev) addElem (orn, E.Element (s.ornMap[a]), lev + 1) elif a in s.tecMap: tec = E.Element ('technical') addElem (nots, tec, lev) addElem (tec, E.Element (s.tecMap[a]), lev + 1) else: decos.append (a) # return staff annotations return decos def doLyr (s, n, nt, lev): for i, lyrobj in enumerate (n.objs): if lyrobj.name != 'syl': continue dash = len (lyrobj.t) == 2 if dash: if i in s.lyrdash: type = 'middle' else: type = 'begin'; s.lyrdash [i] = 1 else: if i in s.lyrdash: type = 'end'; del s.lyrdash [i] else: type = 'single' lyrel = E.Element ('lyric', number = str (i + 1)) addElem (nt, lyrel, lev) addElemT (lyrel, 'syllabic', type, lev + 1) addElemT (lyrel, 'text', lyrobj.t[0].replace ('~',' '), lev + 1) def doBeams (s, n, nt, den, lev): if hasattr (n, 'chord') or hasattr (n, 'grace'): s.grcbbrk = s.grcbbrk or n.bbrk.t[0] # remember if there was any bbrk in or before a grace sequence return bbrk = s.grcbbrk or n.bbrk.t[0] or den < 32 s.grcbbrk = False if not s.prevNote: pbm = None else: pbm = s.prevNote.find ('beam') bm = E.Element ('beam', number='1') bm.text = 'begin' if pbm != None: if bbrk: if pbm.text == 'begin': s.prevNote.remove (pbm) elif pbm.text == 'continue': pbm.text = 'end' s.prevNote = None else: bm.text = 'continue' if den >= 32 and n.name != 'rest': addElem (nt, bm, lev) s.prevNote = nt def stopBeams (s): if not s.prevNote: return pbm = s.prevNote.find ('beam') if pbm != None: if pbm.text == 'begin': s.prevNote.remove (pbm) elif pbm.text == 'continue': pbm.text = 'end' s.prevNote = None def staffDecos (s, decos, maat, lev, bardecos=0): gstaff = s.gStaffNums.get (s.vid, 0) # staff number of the current voice for d in decos: d = s.usrSyms.get (d, d).strip ('!+') # try to replace user defined symbol if d in s.dynaMap: dynel = E.Element ('dynamics') addDirection (maat, dynel, lev, gstaff, [E.Element (d)], 'below', s.gcue_on) elif d in s.wedgeMap: # wedge if ')' in d: type = 'stop' else: type = 'crescendo' if '<' in d or 'crescendo' in d else 'diminuendo' addDirection (maat, E.Element ('wedge', type=type), lev, gstaff) elif d in ['coda', 'segno']: if bardecos: s.bardecos.append (d) # postpone to begin next measure else: text, attr, val = s.capoMap [d] dir = addDirection (maat, E.Element (text), lev, gstaff, placement='above') sound = E.Element ('sound'); sound.set (attr, val) addElem (dir, sound, lev + 1) elif d in s.capoMap: text, attr, val = s.capoMap [d] words = E.Element ('words'); words.text = text dir = addDirection (maat, words, lev, gstaff, placement='above') sound = E.Element ('sound'); sound.set (attr, val) addElem (dir, sound, lev + 1) elif d == '(': s.slurbeg += 1 # start slur on next note else: s.nextdecos.append (d) # keep annotation for the next note def doFields (s, maat, fieldmap, lev): def doClef (): clef, gtrans = 0, 0 clefn = re.search (r'alto1|alto2|alto4|alto|tenor|bass3|bass|treble|perc|none', field) clefm = re.search (r"(?:^m=| m=|middle=)([A-Ga-g])([,']*)", field) trans_oct2 = re.search (r'octave=([-+]\d)', field) trans = re.search (r'(?:^t=| t=|transpose=)(-?[\d]+)', field) trans_oct = re.search (r'([+-^_])(8|15)', field) cue_onoff = re.search (r'cue=(on|off)', field) if clefn: clef = clefn.group () if clefm: note, octstr = clefm.groups () nUp = note.upper () octnum = (4 if nUp == note else 5) + (len (octstr) if "'" in octstr else -len (octstr)) gtrans = (3 if nUp in 'AFD' else 4) - octnum if clef not in ['perc', 'none']: clef = s.clefLineMap [nUp] if clef: s.gtrans = gtrans # only change global tranposition when a clef is really defined sign, line = s.clefMap [clef] if not sign: return c = E.Element ('clef') gstaff = s.gStaffNums.get (s.vid, 0) # the current staff number if gstaff: c.set ('number', str (gstaff)) # only add staff number when defined addElemT (c, 'sign', sign, lev + 2) if line: addElemT (c, 'line', line, lev + 2) if trans_oct: n = trans_oct.group (1) in '-_' and -1 or 1 if trans_oct.group (2) == '15': n *= 2 # 8 => 1 octave, 15 => 2 octaves addElemT (c, 'clef-octave-change', str (n), lev + 2) # transpose print out if trans_oct.group (1) in '+-': s.gtrans += n # also transpose all pitches with one octave if trans_oct2: n = int (trans_oct2.group (1)) s.gtrans += n atts.append ((7, c)) if trans != None: # add transposition in semitones e = E.Element ('transpose') addElemT (e, 'chromatic', str (trans.group (1)), lev + 3) atts.append ((9, e)) if cue_onoff: s.gcue_on = cue_onoff.group (1) == 'on' atts = [] # collect xml attribute elements [(order-number, xml-element), ..] for ftype, field in fieldmap.items (): if not field: # skip empty fields continue if ftype == 'Div': # not an abc field, but handled as if d = E.Element ('divisions') d.text = field atts.append ((1, d)) elif ftype == 'gstaff': # make grand staff e = E.Element ('staves') e.text = str (field) atts.append ((4, e)) elif ftype == 'M': if field == 'none': continue if field == 'C': field = '4/4' elif field == 'C|': field = '2/2' t = E.Element ('time') if '/' not in field: info ('M:%s not recognized, 4/4 assumed' % field) field = '4/4' beats, btype = field.split ('/')[:2] try: s.mdur = simplify (eval (beats), int (btype)) # measure duration for Z and X rests (eval allows M:2+3/4) except: info ('error in M:%s, 4/4 assumed' % field) s.mdur = (4,4) beats, btype = '4','4' addElemT (t, 'beats', beats, lev + 2) addElemT (t, 'beat-type', btype, lev + 2) atts.append ((3, t)) elif ftype == 'K': accs = ['F','C','G','D','A','E','B'] # == s.sharpness [7:14] mode = '' key = re.match (r'\s*([A-G][#b]?)\s*([a-zA-Z]*)', field) alts = re.search (r'\s((\s?[=^_][A-Ga-g])+)', ' ' + field) # avoid matching middle=G and m=G if key: key, mode = key.groups () mode = mode.lower ()[:3] # only first three chars, no case if mode not in s.offTab: mode = 'maj' fifths = s.sharpness.index (key) - s.offTab [mode] if fifths >= 0: s.keyAlts = dict (zip (accs[:fifths], fifths * ['1'])) else: s.keyAlts = dict (zip (accs[fifths:], -fifths * ['-1'])) elif field.startswith ('none') or field == '': # the default key fifths = 0 mode = 'maj' if alts: alts = re.findall (r'[=^_][A-Ga-g]', alts.group(1)) # list of explicit alterations alts = [(x[1], s.alterTab [x[0]]) for x in alts] # [step, alter] for step, alter in alts: # correct permanent alterations for this key s.keyAlts [step.upper ()] = alter k = E.Element ('key') koctave = [] lowerCaseSteps = [step.upper () for step, alter in alts if step.islower ()] for step, alter in s.keyAlts.items (): if alter == '0': # skip neutrals del s.keyAlts [step.upper ()] # otherwise you get neutral signs on normal notes continue addElemT (k, 'key-step', step.upper (), lev + 2) addElemT (k, 'key-alter', alter, lev + 2) koctave.append ('5' if step in lowerCaseSteps else '4') if koctave: # only key signature if not empty for oct in koctave: e = E.Element ('key-octave', number=oct) addElem (k, e, lev + 2) atts.append ((2, k)) elif mode: k = E.Element ('key') addElemT (k, 'fifths', str (fifths), lev + 2) addElemT (k, 'mode', s.modTab [mode], lev + 2) atts.append ((2, k)) doClef () elif ftype == 'L': s.unitLcur = map (int, field.split ('/')) if len (s.unitLcur) == 1 or s.unitLcur[1] not in s.typeMap: info ('L:%s is not allowed, 1/8 assumed' % field) s.unitLcur = 1,8 elif ftype == 'V': doClef () elif ftype == 'I': xs = s.doField_I (ftype, field) if xs and len (xs) == 1: # when "%%MIDI transpose" matched insert 'attribute/transpose/chromatic' e = E.Element ('transpose') addElemT (e, 'chromatic', xs[0], lev + 2) # xs[0] == signed number string given after transpose atts.append ((9, e)) if xs and len (xs) == 2: # repeated occurrence of [I:MIDI] -> instrument change midchan, midprog = xs snd = E.Element ('sound') mi = E.Element ('midi-instrument', id='I-' + s.vid) addElem (maat, snd, lev) addElem (snd, mi, lev + 1) if midchan: addElemT (mi, 'midi-channel', midchan, lev + 2) if midprog: addElemT (mi, 'midi-program', str (int (midprog) + 1), lev + 2) # compatible with abc2midi elif ftype == 'Q': s.doTempo (maat, field, lev) elif ftype in 'TCOAZNGHRBDFSU': info ('**illegal header field in body: %s, content: %s' % (ftype, field)) else: info ('unhandled field: %s, content: %s' % (ftype, field)) if atts: att = E.Element ('attributes') # insert sub elements in the order required by musicXML addElem (maat, att, lev) for _, att_elem in sorted (atts): # ordering ! addElem (att, att_elem, lev + 1) def doTempo (s, maat, field, lev): gstaff = s.gStaffNums.get (s.vid, 0) # staff number of the current voice t = re.search (r'(\d)/(\d\d?)\s*=\s*([.\d]+)|([.\d]+)', field) if not t: return try: if t.group (4): num, den, upm = 1, s.unitLcur[1] , float (t.group (4)) else: num, den, upm = int (t.group (1)), int (t.group (2)), float (t.group (3)) except: return # float or int conversion failure if num != 1: info ('in Q: numerator > 1 in %d/%d not supported' % (num, den)) qpm = 4. * num * upm / den metro = E.Element ('metronome') u = E.Element ('beat-unit'); u.text = s.typeMap [4 * den] pm = E.Element ('per-minute'); pm.text = '%.2f' % upm dir = addDirection (maat, metro, lev, gstaff, [u, pm], placement='above') sound = E.Element ('sound'); sound.set ('tempo', '%.2f' % qpm) addElem (dir, sound, lev + 1) def mkBarline (s, maat, loc, lev, style='', dir='', ending=''): b = E.Element ('barline', location=loc) if style: addElemT (b, 'bar-style', style, lev + 1) if s.curVolta: # first stop a current volta end = E.Element ('ending', number=s.curVolta, type='stop') s.curVolta = '' if loc == 'left': # stop should always go to a right barline bp = E.Element ('barline', location='right') addElem (bp, end, lev + 1) addElem (s.prevmsre, bp, lev) # prevmsre has no right barline! (ending would have stopped there) else: addElem (b, end, lev + 1) if ending: ending = ending.replace ('-',',') # MusicXML only accepts comma's endtxt = '' if ending.startswith ('"'): # ending is a quoted string endtxt = ending.strip ('"') ending = '33' # any number that is not likely to occur elsewhere end = E.Element ('ending', number=ending, type='start') if endtxt: end.text = endtxt # text appears in score in stead of number attribute addElem (b, end, lev + 1) s.curVolta = ending if dir: r = E.Element ('repeat', direction=dir) addElem (b, r, lev + 1) addElem (maat, b, lev) def doChordSym (s, maat, sym, lev): alterMap = {'#':'1','=':'0','b':'-1'} rnt = sym.root.t chord = E.Element ('harmony') addElem (maat, chord, lev) root = E.Element ('root') addElem (chord, root, lev + 1) addElemT (root, 'root-step', rnt[0], lev + 2) if len (rnt) == 2: addElemT (root, 'root-alter', alterMap [rnt[1]], lev + 2) kind = s.chordTab.get (sym.kind.t[0], 'major') addElemT (chord, 'kind', kind, lev + 1) degs = getattr (sym, 'degree', '') if degs: if type (degs) != types.ListType: degs = [degs] for deg in degs: deg = deg.t[0] if deg[0] == '#': alter = '1'; deg = deg[1:] elif deg[0] == 'b': alter = '-1'; deg = deg[1:] else: alter = '0'; deg = deg degree = E.Element ('degree') addElem (chord, degree, lev + 1) addElemT (degree, 'degree-value', deg, lev + 2) addElemT (degree, 'degree-alter', alter, lev + 2) addElemT (degree, 'degree-type', 'add', lev + 2) def mkMeasure (s, i, t, lev, fieldmap={}): s.msreAlts = {} s.ntup = -1 s.acciatura = 0 # next grace element gets acciatura attribute overlay = 0 maat = E.Element ('measure', number = str(i)) if fieldmap: s.doFields (maat, fieldmap, lev + 1) if s.linebrk: # there was a line break in the previous measure e = E.Element ('print') e.set ('new-system', 'yes') addElem (maat, e, lev + 1) s.linebrk = 0 if s.bardecos: # output coda and segno attached to the previous right barline s.staffDecos (s.bardecos, maat, lev + 1) s.bardecos = [] for it, x in enumerate (t): if x.name == 'note' or x.name == 'rest': note = s.mkNote (x, lev + 1) addElem (maat, note, lev + 1) elif x.name == 'lbar': bar = x.t[0] if bar == '|': pass # skip redundant bar elif ':' in bar: # forward repeat volta = x.t[1] if len (x.t) == 2 else '' s.mkBarline (maat, 'left', lev + 1, style='heavy-light', dir='forward', ending=volta) else: # bar must be a volta number s.mkBarline (maat, 'left', lev + 1, ending=bar) elif x.name == 'rbar': if hasattr (x, 'deco'): # MuseScore does not support this -> emergency solution s.staffDecos (x.deco.t, maat, lev + 1, bardecos=1) # coda, segno -> next measure bar = x.t[0] if bar == '.|': s.mkBarline (maat, 'right', lev + 1, style='dotted') elif ':' in bar: # backward repeat s.mkBarline (maat, 'right', lev + 1, style='light-heavy', dir='backward') elif bar == '||': s.mkBarline (maat, 'right', lev + 1, style='light-light') elif bar == '[|]' or bar == '[]': s.mkBarline (maat, 'right', lev + 1, style='none') elif '[' in bar or ']' in bar: s.mkBarline (maat, 'right', lev + 1, style='light-heavy') elif bar[0] == '&': overlay = 1 elif x.name == 'tup': if len (x.t) == 3: n, into, nts = x.t else: n, into, nts = x.t[0], 0, 0 if into == 0: into = 3 if n in [2,4,8] else 2 if nts == 0: nts = n s.tmnum, s.tmden, s.ntup = n, into, nts elif x.name == 'deco': s.staffDecos (x.t, maat, lev + 1) # output staff decos, postpone note decos to next note elif x.name == 'text': pos, text = x.t[:2] place = 'above' if pos == '^' else 'below' words = E.Element ('words') words.text = text gstaff = s.gStaffNums.get (s.vid, 0) # staff number of the current voice addDirection (maat, words, lev + 1, gstaff, placement=place) elif x.name == 'inline': fieldtype, fieldval = x.t[:2] s.doFields (maat, {fieldtype:fieldval}, lev + 1) elif x.name == 'accia': s.acciatura = 1 elif x.name == 'linebrk': s.supports_tag = 1 if it > 0 and t[it -1].name == 'lbar': # we are at start of measure e = E.Element ('print') # output linebreak now e.set ('new-system', 'yes') addElem (maat, e, lev + 1) else: s.linebrk = 1 # output linebreak at start of next measure elif x.name == 'chordsym': s.doChordSym (maat, x, lev + 1) s.stopBeams () s.prevmsre = maat return maat, overlay def mkPart (s, maten, id, lev, attrs, nstaves): s.slurstack = [] s.unitLcur = s.unitL # set the default unit length at begin of each voice s.curVolta = '' s.lyrdash = {} s.linebrk = 0 s.midprg = ['', ''] # MIDI channel nr, program nr for the current part s.gcue_on = 0 # reset cue note marker for each new voice s.gtrans = 0 # reset octave transposition (by clef) part = E.Element ('part', id=id) s.overlayVnum = 0 # overlay voice number to relate ties that extend from one overlayed measure to the next gstaff = s.gStaffNums.get (s.vid, 0) # staff number of the current voice attrs_cpy = attrs.copy () # don't change attrs itself in next line if gstaff == 1: attrs_cpy ['gstaff'] = nstaves # make a grand staff msre, overlay = s.mkMeasure (1, maten[0], lev + 1, attrs_cpy) addElem (part, msre, lev + 1) for i, maat in enumerate (maten[1:]): s.overlayVnum = s.overlayVnum + 1 if overlay else 0 msre, next_overlay = s.mkMeasure (i+2, maat, lev + 1) if overlay: mergePartMeasure (part, msre, s.overlayVnum) else: addElem (part, msre, lev + 1) overlay = next_overlay return part def mkScorePart (s, id, vids_p, partAttr, lev): naam, subnm, midprg = partAttr [id] sp = E.Element ('score-part', id='P'+id) nm = E.Element ('part-name') nm.text = naam addElem (sp, nm, lev + 1) snm = E.Element ('part-abbreviation') snm.text = subnm if subnm: addElem (sp, snm, lev + 1) # only add if subname was given if s.staves: instr_vids = [vids for vids in s.staves if vids[0] == id][0] else: instr_vids = [id] inst = [] for id in instr_vids: if id not in partAttr: continue # error in %%score -> instr_vids may have non existing id's naam, subnm, midprg = partAttr [id] midchan, midprog = midprg if not midchan and not midprog: continue # only add if program nr or channel was given si = E.Element ('score-instrument', id='I-'+id) addElemT (si, 'instrument-name', naam, lev + 2) mi = E.Element ('midi-instrument', id='I-'+id) if midchan: addElemT (mi, 'midi-channel', midchan, lev + 2) if midprog: addElemT (mi, 'midi-program', str (int (midprog) + 1), lev + 2) # compatible with abc2midi inst.append ((si, mi)) for si, mi in inst: addElem (sp, si, lev + 1) for si, mi in inst: addElem (sp, mi, lev + 1) return sp, len (inst) def mkPartlist (s, vids, partAttr, lev): def addPartGroup (sym, num): pg = E.Element ('part-group', number=str (num), type='start') addElem (partlist, pg, lev + 1) addElemT (pg, 'group-symbol', sym, lev + 2) addElemT (pg, 'group-barline', 'yes', lev + 2) partlist = E.Element ('part-list') g_num = 0 # xml group number nInstrs = [] # number of instruments in each part for g in (s.groups or vids): # brace/bracket or abc_voice_id if g == '[': g_num += 1; addPartGroup ('bracket', g_num) elif g == '{': g_num += 1; addPartGroup ('brace', g_num) elif g in '}]': pg = E.Element ('part-group', number=str (g_num), type='stop') addElem (partlist, pg, lev + 1) g_num -= 1 else: # g = abc_voice_id if g not in vids: continue # error in %%score sp, nInst = s.mkScorePart (g, vids, partAttr, lev + 1) addElem (partlist, sp, lev + 1) nInstrs.append (nInst) return partlist, nInstrs def doField_I (s, type, x): def readPfmt (x, n): # read ABC page formatting constant if not s.pageFmtAbc: s.pageFmtAbc = s.pageFmtDef # set the default values on first change ro = re.search (r'[^.\d]*([\d.]+)\s*(cm|in|pt)?', x) # float followed by unit if ro: x, unit = ro.groups () # unit == None when not present u = {'cm':10., 'in':25.4, 'pt':25.4/72} [unit] if unit else 1. s.pageFmtAbc [n] = float (x) * u # convert ABC values to millimeters else: info ('error in page format: %s' % x) if x.startswith ('score') or x.startswith ('staves'): s.staveDefs += [x] # collect all voice mappings elif x.startswith ('staffwidth'): info ('skipped I-field: %s' % x) elif x.startswith ('staff'): # set new staff number of the current voice r1 = re.search (r'staff *([+-]?)(\d)', x) if r1: sign = r1.group (1) num = int (r1.group (2)) gstaff = s.gStaffNums.get (s.vid, 0) # staff number of the current voice if sign: # relative staff number num = (sign == '-') and gstaff - num or gstaff + num else: # absolute abc staff number try: vabc = s.staves [num - 1][0] # vid of (first voice of) abc-staff num except: vabc = 0; info ('abc staff %s does not exist' % num) num = s.gStaffNumsOrg.get (vabc, 0) # xml staff number of abc-staff num if gstaff and num > 0 and num <= s.gNstaves [s.vid]: s.gStaffNums [s.vid] = num else: info ('could not relocate to staff: %s' % r1.group ()) else: info ('not a valid staff redirection: %s' % x) elif x.startswith ('scale'): readPfmt (x, 0) elif x.startswith ('pageheight'): readPfmt (x, 1) elif x.startswith ('pagewidth'): readPfmt (x, 2) elif x.startswith ('leftmargin'): readPfmt (x, 3) elif x.startswith ('rightmargin'): readPfmt (x, 4) elif x.startswith ('topmargin'): readPfmt (x, 5) elif x.startswith ('botmargin'): readPfmt (x, 6) elif x.startswith ('MIDI'): r1 = re.search (r'program *(\d*) +(\d+)', x) r2 = re.search (r'channel\D*(\d+)', x) if r1: ch, prg = r1.groups () # channel nr or '', program nr if r2: ch, prg = r2.group (1), '' # channel nr only if r1 or r2: if s.midprg[1] == '': # no instrument defined yet s.midprg[1] = prg if ch: s.midprg[0] = ch elif ch and s.midprg[0] == '': # no channel defined yet s.midprg[0] = ch else: # repeated midi def -> insert instument change return [ch, prg] r = re.search (r'transpose[^-\d]*(-?\d+)', x) if r: return [r.group (1)] else: info ('skipped I-field: %s' % x) def parseStaveDef (s, vdefs): if not s.staveDefs: return vdefs for x in s.staveDefs [1:]: info ('%%%%%s dropped, multiple stave mappings not supported' % x) x = s.staveDefs [0] # only the first %%score is honoured score = abc_scoredef.parseString (x) [0] f = lambda x: type (x) == types.UnicodeType and [x] or x s.staves = map (f, mkStaves (score, vdefs)) s.grands = map (f, mkGrand (score, vdefs)) s.groups = mkGroups (score) vce_groups = [vids for vids in s.staves if len (vids) > 1] # all voice groups d = {} # for each voice group: map first voice id -> all merged voice ids for vgr in vce_groups: d [vgr[0]] = vgr for gstaff in s.grands: # for all grand staves if len (gstaff) == 1: continue # skip single parts for v, stf_num in zip (gstaff, range (1, len (gstaff) + 1)): for vx in d.get (v, [v]): # allocate staff numbers s.gStaffNums [vx] = stf_num # to all constituant voices s.gNstaves [vx] = len (gstaff) # also remember total number of staves s.gStaffNumsOrg = s.gStaffNums.copy () # keep original allocation for abc -> xml staff map return vdefs def voiceNamesAndMaps (s, ps): # get voice names and mappings vdefs = {} for vid, vcedef, vce in ps: # vcedef == emtpy of first pObj == voice definition pname, psubnm = '', '' # part name and abbreviation if not vcedef: # simple abc without voice definitions vdefs [vid] = pname, psubnm, '' else: # abc with voice definitions if vid != vcedef.t[1]: info ('voice ids unequal: %s (reg-ex) != %s (grammar)' % (vid, vcedef.t[1])) rn = re.search (r'(?:name|nm)="([^"]*)"', vcedef.t[2]) if rn: pname = rn.group (1) rn = re.search (r'(?:subname|snm|sname)="([^"]*)"', vcedef.t[2]) if rn: psubnm = rn.group (1) vdefs [vid] = pname, psubnm, vcedef.t[2] xs = [pObj.t[1] for maat in vce for pObj in maat if pObj.name == 'inline'] # all inline statements in vce s.staveDefs += [x for x in xs if x.startswith ('score') or x.startswith ('staves')] # filter %%score and %%staves return vdefs def doHeaderField (s, fld, attrmap): type, value = fld.t[:2] if not value: # skip empty field return if type == 'M': attrmap [type] = value elif type == 'L': try: s.unitL = map (int, fld.t[1].split ('/')) except: info ('illegal unit length:%s, 1/8 assumed' % fld.t[1]) s.unitL = 1,8 if len (s.unitL) == 1 or s.unitL[1] not in s.typeMap: info ('L:%s is not allowed, 1/8 assumed' % fld.t[1]) s.unitL = 1,8 elif type == 'K': attrmap[type] = value elif type == 'T': if s.title: s.title = s.title + '\n' + value else: s.title = value elif type == 'C': s.creator ['composer'] = s.creator.get ('composer', '') + value elif type == 'Z': s.creator ['lyricist'] = s.creator.get ('lyricist', '') + value elif type == 'U': sym = fld.t[2].strip ('!+') s.usrSyms [value] = sym elif type == 'I': s.doField_I (type, value) elif type == 'Q': attrmap[type] = value elif type in s.creditTab: s.credits [s.creditTab [type]] = value else: info ('skipped header: %s' % fld) def mkIdentification (s, score, lev): if s.title: addElemT (score, 'movement-title', s.title, lev + 1) ident = E.Element ('identification') addElem (score, ident, lev + 1) if s.creator: for ctype, cname in s.creator.items (): c = E.Element ('creator', type=ctype) c.text = cname addElem (ident, c, lev + 2) encoding = E.Element ('encoding') addElem (ident, encoding, lev + 2) encoder = E.Element ('encoder') encoder.text = 'abc2xml version %d' % VERSION addElem (encoding, encoder, lev + 3) if s.supports_tag: # avoids interference of auto-flowing and explicit linebreaks suports = E.Element ('supports', attribute="new-system", element="print", type="yes", value="yes") addElem (encoding, suports, lev + 3) encodingDate = E.Element ('encoding-date') encodingDate.text = str (datetime.date.today ()) addElem (encoding, encodingDate, lev + 3) def mkDefaults (s, score, lev): if s.pageFmtCmd: s.pageFmtAbc = s.pageFmtCmd if not s.pageFmtAbc: return # do not output the defaults if none is desired space, h, w, l, r, t, b = s.pageFmtAbc mils = 4 * space # staff height in millimeters scale = 40. / mils # tenth's per millimeter dflts = E.Element ('defaults') addElem (score, dflts, lev) scaling = E.Element ('scaling') addElem (dflts, scaling, lev + 1) addElemT (scaling, 'millimeters', '%g' % mils, lev + 2) addElemT (scaling, 'tenths', '40', lev + 2) layout = E.Element ('page-layout') addElem (dflts, layout, lev + 1) addElemT (layout, 'page-height', '%g' % (h * scale), lev + 2) addElemT (layout, 'page-width', '%g' % (w * scale), lev + 2) margins = E.Element ('page-margins', type='both') addElem (layout, margins, lev + 2) addElemT (margins, 'left-margin', '%g' % (l * scale), lev + 3) addElemT (margins, 'right-margin', '%g' % (r * scale), lev + 3) addElemT (margins, 'top-margin', '%g' % (t * scale), lev + 3) addElemT (margins, 'bottom-margin', '%g' % (b * scale), lev + 3) def mkCredits (s, score, lev): if not s.credits: return for ctype, ctext in s.credits.items (): credit = E.Element ('credit', page='1') addElemT (credit, 'credit-type', ctype, lev + 2) addElemT (credit, 'credit-words', ctext, lev + 2) addElem (score, credit, lev) def parse (s, abc_string): abctext = abc_string if type (abc_string) == types.UnicodeType else decodeInput (abc_string) abctext = abctext.replace ('[I:staff ','[I:staff') # avoid false beam breaks s.reset () header, voices = splitHeaderVoices (abctext) ps = [] try: hs = abc_header.parseString (header) if header else '' for id, vce_lyr in voices: # vce_lyr = [voice-block] where voice-block = (measures, corresponding lyric lines) vcelyr = [] # list of measures where measure = list of elements (see syntax) prevLeftBar = None # previous voice ended with a left-bar symbol (double repeat) for voice, lyr in vce_lyr: vce = abc_voice.parseString (voice).asList () if not vce: # empty voice, insert an inline field that will be rejected vce = [[pObj ('inline', ['I', 'empty voice'])]] if prevLeftBar: vce[0].insert (0, prevLeftBar) # insert at begin of first measure prevLeftBar = None if vce[-1] and vce[-1][-1].name == 'lbar': # last measure ends with an lbar prevLeftBar = vce[-1][-1] if len (vce) > 1: # vce should not become empty (-> exception when taking vcelyr [0][0]) del vce[-1] # lbar was the only element in measure vce[-1] lyr = lyr.strip () # strip leading \n (because we split on '\nw:...') if lyr: # no lyrics for this measures-lyrics block lyr = lyr_block.parseString (lyr).asList () xs = alignLyr (vce, lyr) # put all syllables into corresponding notes else: xs = vce vcelyr += xs elem1 = vcelyr [0][0] # the first element of the first measure if elem1.name == 'inline'and elem1.t[0] == 'V': # is a voice definition voicedef = elem1 del vcelyr [0][0] # do not read voicedef twice else: voicedef = '' ps.append ((id, voicedef, vcelyr)) except ParseException, err: if err.loc > 40: # limit length of error message, compatible with markInputline err.pstr = err.pstr [err.loc - 40: err.loc + 40] err.loc = 40 xs = err.line[err.col-1:] try: info (err.line.encode ('utf-8'), warn=0) # err.line is a unicode string!! except: info (err.line.encode ('latin-1'), warn=0) info ((err.col-1) * '-' + '^', warn=0) if re.search (r'\[U:[XYZxyz]', xs): info ('Error: illegal user defined symbol: %s' % xs[1:], warn=0) elif re.search (r'\[[OAPZNGHRBDFSXTCIU]:', xs): info ('Error: header-only field %s appears after K:' % xs[1:], warn=0) else: info ('Syntax error at column %d' % err.col, warn=0) raise err s.unitL = (1, 8) s.title = '' s.creator = {} # {creator type -> name string} s.credits = {} # {credit type -> string} score = E.Element ('score-partwise') attrmap = {'Div': str (s.divisions), 'K':'C treble', 'M':'4/4'} for res in hs: if res.name == 'field': s.doHeaderField (res, attrmap) else: info ('unexpected header item: %s' % res) vdefs = s.voiceNamesAndMaps (ps) vdefs = s.parseStaveDef (vdefs) lev = 0 vids, parts, partAttr = [], [], {} for vid, _, vce in ps: # voice id, voice parse tree pname, psubnm, voicedef = vdefs [vid] # part name attrmap ['V'] = voicedef # abc text of first voice definition (after V:vid) or empty pid = 'P%s' % vid # let part id start with an alpha s.vid = vid # avoid parameter passing, needed in mkNote for instrument id part = s.mkPart (vce, pid, lev + 1, attrmap, s.gNstaves.get (vid, 0)) if 'Q' in attrmap: del attrmap ['Q'] # header tempo only in first part parts.append (part) vids.append (vid) partAttr [vid] = (pname, psubnm, s.midprg) parts, vidsnew = mergeParts (parts, vids, s.staves) # merge parts into staves as indicated by %%score parts, _ = mergeParts (parts, vidsnew, s.grands, 1) # merge grand staves s.mkIdentification (score, lev) s.mkDefaults (score, lev + 1) s.mkCredits (score, lev) partlist, nInstrs = s.mkPartlist (vids, partAttr, lev + 1) addElem (score, partlist, lev + 1) for ip, part in enumerate (parts): if nInstrs [ip] < 2: # no instrument tag needed for one- or no-instrument parts removeElems (part, 'measure/note', 'instrument') addElem (score, part, lev + 1) return score def decodeInput (data_string): try: enc = 'utf-8'; unicode_string = data_string.decode (enc) except: try: enc = 'latin-1'; unicode_string = data_string.decode (enc) except: raise Exception ('data not encoded in utf-8 nor in latin-1') info ('decoded from %s' % enc) return unicode_string xmlVersion = "<?xml version='1.0' encoding='utf-8'?>" def fixDoctype (elem, enc): xs = E.tostring (elem, encoding=enc) ys = xs.split ('\n') if enc == 'utf-8': ys.insert (0, xmlVersion) # crooked logic of ElementTree lib ys.insert (1, '<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">') return '\n'.join (ys) def xml2mxl (pad, fnm, data): # write xml data to compressed .mxl file from zipfile import ZipFile, ZIP_DEFLATED fnmext = fnm + '.xml' # file name with extension, relative to the root within the archive outfile = os.path.join (pad, fnm + '.mxl') meta = '%s\n<container><rootfiles>\n' % xmlVersion meta += '<rootfile full-path="%s" media-type="application/vnd.recordare.musicxml+xml"/>\n' % fnmext meta += '</rootfiles></container>' f = ZipFile (outfile, 'w', ZIP_DEFLATED) f.writestr ('META-INF/container.xml', meta) f.writestr (fnmext, data) f.close () info ('%s written' % outfile, warn=0) def convert (pad, fnm, abc_string, mxl): # these globals should be initialised (as in the __main__ secion) before calling convert global mxm # optimisation 1: keep instance of MusicXml global abc_header, abc_voice, lyr_block, abc_scoredef # optimisation 2: keep computed grammars score = mxm.parse (abc_string) if pad: data = fixDoctype (score, 'utf-8') if not mxl or mxl in ['a', 'add']: outfnm = os.path.join (pad, fnm + '.xml') outfile = file (outfnm, 'wb') outfile.write (data) outfile.close () info ('%s written' % outfnm, warn=0) if mxl: xml2mxl (pad, fnm, data) # also write a compressed version else: outfile = sys.stdout outfile.write (fixDoctype (score, 'utf-8')) outfile.write ('\n') #---------------- # Main Program #---------------- if __name__ == '__main__': from optparse import OptionParser from glob import glob import time global mxm # keep instance of MusicXml global abc_header, abc_voice, lyr_block, abc_scoredef # keep computed grammars mxm = MusicXml () parser = OptionParser (usage='%prog [-h] [-r] [-m SKIP NUM] [-o DIR] [-p PFMT] [-z MODE] <file1> [<file2> ...]', version='version %d' % VERSION) parser.add_option ("-o", action="store", help="store xml files in DIR", default='', metavar='DIR') parser.add_option ("-m", action="store", help="skip SKIP tunes, then read at most NUM tunes", nargs=2, type='int', default=(0,1), metavar='SKIP NUM') parser.add_option ("-p", action="store", help="page formatting in PFMT", default='', metavar='PFMT') parser.add_option ("-z", "--mxl", dest="mxl", help="store as compressed mxl, MODE = a(dd) or r(eplace)", default='', metavar='MODE') parser.add_option ("-r", action="store_true", help="show whole measure rests in merged staffs", default=False) options, args = parser.parse_args () if len (args) == 0: parser.error ('no input file given') pad = options.o if options.mxl and options.mxl not in ['a','add', 'r', 'replace']: parser.error ('MODE should be a(dd) or r(eplace), not: %s' % options.mxl) if pad: if not os.path.exists (pad): os.mkdir (pad) if not os.path.isdir (pad): parser.error ('%s is not a directory' % pad) if options.p: # set page formatting values try: # space, page-height, -width, margin-left, -right, -top, -bottom mxm.pageFmtCmd = map (float, options.p.split (',')) if len (mxm.pageFmtCmd) != 7: raise Exception ('-p needs 7 values') except Exception, err: parser.error (err) mxm.gmwr = options.r # ugly: needs to be globally accessable abc_header, abc_voice, lyr_block, abc_scoredef = abc_grammar () # compute grammar only once per file set fnmext_list = [] for i in args: fnmext_list += glob (i) if not fnmext_list: parser.error ('none of the input files exist') t_start = time.time () for X, fnmext in enumerate (fnmext_list): fnm, ext = os.path.splitext (fnmext) if ext.lower () not in ('.abc'): info ('skipped input file %s, it should have extension .abc' % fnmext) continue if os.path.isdir (fnmext): info ('skipped directory %s. Only files are accepted' % fnmext) continue fobj = open (fnmext, 'rb') encoded_data = fobj.read () fobj.close () fragments = encoded_data.split ('X:') preamble = fragments [0] # tunes can be preceeded by formatting instructions tunes = fragments[1:] if not tunes and preamble: tunes, preamble = ['1\n' + preamble], '' # tune without X: skip, num = options.m # skip tunes, then read at most num tunes numtunes = min ([len (tunes), num]) # number of tunes to be converted for itune, tune in enumerate (tunes): if itune < skip: continue if itune >= skip + num: break tune = preamble + 'X:' + tune # restore preamble before each tune fnmNum = '%s%02d' % (fnm, itune + 1) if numtunes > 1 else fnm try: # convert string abctext -> file pad/fnmNum.xml convert (pad, fnmNum, tune, options.mxl) except ParseException, err: pass # output already printed except Exception, err: info ('an exception occurred.\n%s' % err) info ('done in %.2f secs' % (time.time () - t_start))