kastdeur/bwwtolily
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Read (cut) common time signature

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if no time signature found, try to find a (cut) common time signature.
default to 4/4.
This commit is contained in:
Eric Teunis de Boone 2019-01-28 01:13:19 +01:00
parent 075ecbf087
commit b29a4fd5d9
1 changed files with 15 additions and 2 deletions
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17
bwwtolily.py
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@ -29,7 +29,9 @@ class bwwtolily :
#make a regex to determine if something is a lilypond note #make a regex to determine if something is a lilypond note
self.regex_lilynote= re.compile("[abcdefgAG][0-9]*") self.regex_lilynote= re.compile("[abcdefgAG][0-9]*")
#try to determine the time signature #try to determine the time signature
self.sig_regex = re.compile("([0-9])_([0-9])") self.sig_regex = re.compile("([0-9]{1,2})_([0-9]{1,2})")
#alternative time signature for (cut) common time
self.sig_regex_common = re.compile("C_\W")
#a regex to find notes #a regex to find notes
self.regex_note_info=re.compile("(?P<note>[A-Z]+)(?P<dir>[a-z]*)_(?P<time>[0-9]{1,2})") self.regex_note_info=re.compile("(?P<note>[A-Z]+)(?P<dir>[a-z]*)_(?P<time>[0-9]{1,2})")
#a regex to find grace notes #a regex to find grace notes
@ -55,7 +57,7 @@ class bwwtolily :
#a regex to find note slurs, not slur embellishments #a regex to find note slurs, not slur embellishments
self.regex_slur = re.compile("\^(?P<note_count>[0-9])(?P<end_note>[a-z]*)") self.regex_slur = re.compile("\^(?P<note_count>[0-9])(?P<end_note>[a-z]*)")
#we need a list to ignore #we need a list to ignore
self.ignore_elements = ("sharpf","sharpc","space","&") self.ignore_elements = ("sharpf","sharpc","space","&", "C")
#create a dictionary of common bww elements and their lily counterparts #create a dictionary of common bww elements and their lily counterparts
self.transpose_dict = { self.transpose_dict = {
"!":"\\bar \"|\"\n", "!":"\\bar \"|\"\n",
@ -131,6 +133,12 @@ class bwwtolily :
result = self.sig_regex.search(file_text) result = self.sig_regex.search(file_text)
if result: if result:
self.tune_time_sig = result.group(1)+"/"+result.group(2) self.tune_time_sig = result.group(1)+"/"+result.group(2)
else:
result = self.sig_regex_common.search(file_text)
if result:
self.tune_time_sig = "2/2"
else: else:
self.tune_time_sig = "4/4" self.tune_time_sig = "4/4"
@ -336,6 +344,11 @@ class bwwtolily :
result = self.sig_regex.search(element) result = self.sig_regex.search(element)
if result: if result:
return return
result = self.sig_regex_common.search(element)
if result:
return
try: try:
dict_result = self.transpose_dict[element] dict_result = self.transpose_dict[element]