mirror of
https://github.com/microtherion/VocalEasel.git
synced 2024-12-22 19:23:59 +00:00
109 lines
2.1 KiB
Python
Executable File
109 lines
2.1 KiB
Python
Executable File
#!/usr/bin/env python
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# Renumber a mma song file. Just take any lines
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# which start with a number and do those sequenially.
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import sys, os
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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-renum, (c) Bob van der Poel"
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print "Re-numbers a mma song file and"
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print " cleans up chord tabbing."
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print "Overwrites existing file!"
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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-rnum: 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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tempfile = "%s.%s.tmp" % (filename, os.getpid())
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try:
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outpath = open( tempfile, 'w')
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except:
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error("Can't open scratchfile '%s', error '%s'" % (tempfile, sys.exc_info()[0]) )
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linenum = 1
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for l in inpath:
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l=l.rstrip()
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try:
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x = int(l.split()[0])
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except:
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x = None
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if x != None:
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otherstuff = '' # break off non-chord items
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cmt = ''
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if l.count('//'):
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l, cmt=l.split('//', 1)
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for i,a in enumerate(l):
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if a in('{[*'):
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otherstuff=l[i:]
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l=l[:i]
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l=l.strip()
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break
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newl=['%-5s' % linenum]
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linenum += 1 # the global line number
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for a in l.split()[1:]: # do each chord item
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newl.append(" %6s" % a)
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if otherstuff: # join on non-chord stuff
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newl.append(" ")
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newl.append(otherstuff)
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if cmt:
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newl.append(" //")
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newl.append(cmt)
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newl=''.join(newl)
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else:
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newl = l
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outpath.write(newl + "\n")
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inpath.close()
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outpath.close()
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try:
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os.remove(filename)
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except:
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error("Cannot delete '%s', new file '%s' remains" % (filename, tempfile) )
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try:
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os.rename(tempfile, filename)
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except:
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error("Cannot rename '%s' to '%s'." (tempfile, filename) )
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