Files
galaxy/tools/maf/maf_reverse_complement.py
T

46 lines
1.2 KiB
Python

#!/usr/bin/env python
"""
Reads a MAF file. Produces a MAF file containing
the reverse complement for each block in the source file.
usage: %prog input_maf_file output_maf_file
"""
#Dan Blankenberg
from galaxy import eggs
import pkg_resources
pkg_resources.require( "bx-python" )
import bx.align.maf
from galaxy.tools.util import maf_utilities
import sys
assert sys.version_info[:2] >= ( 2, 4 )
def __main__():
#Parse Command Line
input_file = sys.argv.pop( 1 )
output_file = sys.argv.pop( 1 )
species = maf_utilities.parse_species_option( sys.argv.pop( 1 ) )
try:
maf_writer = bx.align.maf.Writer( open( output_file, 'w' ) )
except:
print sys.stderr, "Unable to open output file"
sys.exit()
try:
count = 0
for count, maf in enumerate( bx.align.maf.Reader( open( input_file ) ) ):
maf = maf.reverse_complement()
if species:
maf = maf.limit_to_species( species )
maf_writer.write( maf )
except:
print >>sys.stderr, "Your MAF file appears to be malformed."
sys.exit()
print "%i regions were reverse complemented." % count
maf_writer.close()
if __name__ == "__main__":
__main__()