"""Copyright (C) 2004 Paul Brossier <piem@altern.org>
print aubio.__LICENSE__ for the terms of use
"""

__LICENSE__ = """\
     Copyright (C) 2004 Paul Brossier <piem@altern.org>

     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.

     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
"""            

def read_datafile(filename,depth=-1):
    """read list data from a text file (columns of float)"""
    if filename == '--' or filename == '-':
        import sys
        fres = sys.stdin
    else:
        fres = open(filename,'ro')
    l = []
    while 1:
        tmp = fres.readline()
        if not tmp : break
        else: tmp = tmp.split()
        if depth > 0:
            for i in range(min(depth,len(tmp))):
                tmp[i] = float(tmp[i])
            l.append(tmp)
        elif depth == 0:
            l.append(float(tmp[0]))
        else:
            for i in range(len(tmp)):
                tmp[i] = float(tmp[i])
            l.append(tmp)
    return l

