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https://github.com/microtherion/VocalEasel.git
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128 lines
2.6 KiB
Python
Executable File
128 lines
2.6 KiB
Python
Executable File
#!/usr/bin/env python
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# Convert mma file with roman numeral chords to std.
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import sys, os, platform
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# setup for the MMA modules.
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platform = platform.system()
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if platform == 'Windows':
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dirlist = ( sys.path[0], "c:/mma", "c:/program files/mma", ".")
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else:
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dirlist = ( sys.path[0], "/usr/local/share/mma", "/usr/share/mma", '.' )
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for d in dirlist:
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moddir = os.path.join(d, 'MMA')
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if os.path.isdir(moddir):
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if not d in sys.path:
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sys.path.insert(0, d)
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MMAdir = d
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break
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import MMA.roman
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import MMA.keysig
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import MMA.gbl as gbl
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import MMA.midi
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def error(m):
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""" Abort on error with message. """
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print m
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sys.exit(1)
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def usage():
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""" Print usage message and exit. """
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print "Mma-rm2std, (c) Bob van der Poel"
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print "Convert a mma file using roman chords to std."
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print
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sys.exit(1)
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##########################
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if len(sys.argv[1:]) != 1:
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print "mma-rm2std: requires 1 filename argument."
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usage()
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filename = sys.argv[1]
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if filename[0] == '-':
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usage()
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try:
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inpath = open(filename, 'r')
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except:
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error("Can't access the file '%s'" % filename)
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linenum = 1
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m = gbl.mtrks[0] = MMA.midi.Mtrk(0)
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for l in inpath:
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l=l.rstrip()
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if l.strip().upper().startswith("KEYSIG"):
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t = l
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if '//' in t:
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t = t[ :t.find('//')]
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t=t.split()
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MMA.keysig.keySig.set(t[1:])
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if l and l[0].isdigit():
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# strip off trailing lyric, notes, repeat or comment
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eolstuff = ''
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s=[]
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for d in ("*", "{", "[", '//'):
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if l.count(d):
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s.append(l.find(d))
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if s:
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s.sort()
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eolstuff = l[s[0]:]
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l = l[:s[0]]
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l = l.split()
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for i in range(1,len(l)):
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c=l[i]
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if c[0] == '/':
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l[i] = " %6s" % c
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continue
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lead = end = ''
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while c[0] in ('+', '-'):
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lead += c[0]
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c=c[1:]
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# strip from right side of chord barre, invert, etc.
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s = []
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for d in (":", ">", "/", 'z'):
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if c.count(d):
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s.append(c.find(d))
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if s:
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s.sort()
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end = c[s[0]:]
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c = c[:s[0]]
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# all we have now is a chord name
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if c and c[0] in ("I", "V", "i", "v"):
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c=MMA.roman.convert(c)
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# reassemble name
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c = lead + c + end
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l[i] = " %6s" % c
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# reassemble line
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l.append(eolstuff) # put back comment, lyric, etc.
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l = ' '.join(l)
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print l
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