mirror of
https://github.com/microtherion/VocalEasel.git
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256 lines
7.3 KiB
Python
256 lines
7.3 KiB
Python
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# auto.py
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"""
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This module is an integeral part of the program
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MMA - Musical Midi Accompaniment.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Bob van der Poel <bob@mellowood.ca>
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"""
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import os
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import sys
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import pickle
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import MMA.midi
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import gbl
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import MMA.parse
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from MMA.common import *
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grooveDir = {}
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mmadir = ".mmaDB" # constant, name of the lib database file
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fileCount = 0
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grooveCount = 0
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gdDate = None
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processedFiles = []
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mkGrooveList = []
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def updateGrooveList(n):
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""" Called from parse when new grooves are defined in a -g. """
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global mkGrooveList
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mkGrooveList.append(n)
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def libUpdate():
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""" Update the mma library database file(s) with -g or -G option.
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This is called from the main program after the initialization
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and other option parsing. No RETURN.
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"""
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global fileCount, gdDate, grooveDir, processedfiles
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print "Creating MMA groove directory database(s). Standby..."
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""" gbl.libPath points to one main directory tree which should include
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gbl.autoLib (defaults to 'stdlib'). We create a separate .mmaDB
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file for each directory found in the main tree. IE. if we have the
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directories stdlib and bvstuff we end up with stdlib/.mmaDB and
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bvstuff/.mmaDB.
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"""
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for d in os.listdir(gbl.libPath):
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libpath = os.path.join(gbl.libPath, d)
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if not os.path.isdir(libpath): # skip files, just process directories
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continue
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""" Attempt to read existing database
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There is a flag gbl.makeGrvDefs set to 0, 1, 2
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0 - there was no -g or -G so we're not here
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1 - -g - read existing database and update
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2 - -G - don't read existing, create new
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"""
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grooveDir = {}
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gdDate = None
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if gbl.makeGrvDefs == 1:
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try:
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infile = os.path.join(libpath, mmadir)
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f=file(infile, "rb")
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f.readline() # Read/discard comment line
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grooveDir = pickle.load(f)
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f.close()
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gdDate = os.path.getmtime(infile)
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except:
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pass
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dolibupdate(libpath, '')
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# Strip out defs of deleted (not found) files.
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for f in grooveDir.keys():
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if f not in processedFiles:
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print " Deleting: %s" % f
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del grooveDir[f]
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try:
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outpath = file(os.path.join(libpath, mmadir), 'wb')
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except:
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error("Error creating lib-database file '%s'. CRITICAL!" % libpath)
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outpath.write("### mmaDB ... AUTOGENERATED BINARY DATA. "
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"DO NOT EDIT!!!\n")
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pickle.dump(grooveDir, outpath, pickle.HIGHEST_PROTOCOL )
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outpath.close()
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print
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print "Database update complete."
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print " Files processed: %s" % fileCount
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print " Total number of grooves: %s" % grooveCount
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sys.exit(0)
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def dolibupdate(root, subdir):
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""" Recursive function to read groove files in a directory. """
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global fileCount, grooveCount, gdDate, grooveDir, processedFiles, mkGrooveList
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if subdir == '.':
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print "Skipping: '.'"
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return
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if subdir:
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print " Processing library directory '%s'." % subdir
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""" Get a list of the files in this directory. If the list
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includes a file called 'MMAIGNORE' the entire directory
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(and subdirs) is ignored. Otherwise, each file in the
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directory ending in 'mma' is parsed for groove defs.
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"""
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p = os.path.join(root,subdir)
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dirfiles = os.listdir(p)
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if "MMAIGNORE" in dirfiles:
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print "Skipping: %s" % p
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return
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for fn in sorted(dirfiles):
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# Ignore hidden files and emacs auto-save and dead.
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if fn.startswith('.') or fn.startswith('#'):
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continue
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# Create full path name
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f=os.path.join(root, subdir, fn)
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if os.path.isdir(f):
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dolibupdate(root, os.path.join(subdir,fn)) # recursive!
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elif f.endswith(gbl.ext):
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ename = os.path.join(subdir, fn)
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processedFiles.append(ename)
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if gdDate and grooveDir.has_key(ename) and \
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os.path.getmtime(f) < gdDate:
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print " Existing: %s" % f
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grooveCount += len(grooveDir[ename])
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continue
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if grooveDir.has_key(ename):
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print " Updating: %s" % f
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else:
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print " Creating: %s" % f
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mkGrooveList = []
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gbl.mtrks = {}
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for c in gbl.midiAssigns.keys():
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gbl.midiAssigns[c]=[]
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for a,v in enumerate(gbl.midiAvail):
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gbl.midiAvail[a]=0
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gbl.mtrks[0]=MMA.midi.Mtrk(0)
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gbl.tnames = {}
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MMA.parse.parseFile(f) # read current file, grab grooves
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fileCount += 1 # just so we can report to user
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grooveCount += len(mkGrooveList)
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grooveDir[ename]=mkGrooveList
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else:
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if not f.endswith(mmadir):
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print " Ignoring: %s" % f
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#################################################################
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def loadGrooveDir(g):
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""" Try to auto-load a groove from the library.
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The compliation of all the MMADIR files is stored in the dict
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grooveDir{}.
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Check the main libpath directory for the MMADIR file. The
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names of the files and corresponding grooves are extracted.
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This is stored in a dictionary with the filename as the key
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and a list of grooves as the data.
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"""
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global grooveDir
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""" If the global dict grooveDir is empty we first load the MMADIR info.
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We're assuming that not much goes wrong here...if we don't find
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the database we set grooveDir{} to a BS value to avoid future
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load attempts. The entire load is in a try, which means it either
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all works, or not ...
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"""
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if not grooveDir:
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try:
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infile = os.path.join(gbl.libPath, gbl.autoLib, mmadir)
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f=file(infile, "rb")
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f.readline() # Read/discard comment line
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grooveDir = pickle.load(f)
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f.close()
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except:
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grooveDir[0]=''
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""" Search the dict for a match. grooveDir{} is a dictionary
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for lists. Each dictionary key is filename (eg: "lib/rhumba.mma")
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and the list associated with it is a list of grooves defined
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in that file. Just a matter of stepping though the dict. and
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returning the proper filename.
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RETURN: Lib-Filename if found
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None if not found
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"""
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for filename, namelist in grooveDir.items():
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if g in namelist:
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return filename
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return None
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