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#!/usr/bin/env python
"""
Compare two axt files, reporting differences but ignoring some trivial ones
---------------------------------------------------------------------------
:Author: Bob Harris (rsharris@bx.psu.edu)
"""
import sys,re
def usage(s=None):
message = """
axt_compare [--sort] axt_file1 axt_file2
"""
if (s == None): sys.exit (message)
else: sys.exit ("%s\n%s" % (s,message))
def main():
# parse the command line
sortEm = False
if (sys.argv[1] == "--sort"):
sortEm = True
del sys.argv[1]
if (len(sys.argv) < 3):
usage("you must specify two axt files")
elif (len(sys.argv) > 3):
usage("wrong number of arguments")
axt1Filename = sys.argv[1]
axt2Filename = sys.argv[2]
# compare the files
axt1 = file(axt1Filename,"rt")
axt2 = file(axt2Filename,"rt")
different = compare_files(axt1,axt2,sortEm=sortEm)
axt1.close()
axt2.close()
if (type(different) == tuple):
(message,which) = different
if (which == "axt1"): message = "in %s, %s" % (axt1Filename,message)
elif (which == "axt2"): message = "in %s, %s" % (axt2Filename,message)
different = True
elif (type(different) == str):
message = "%s and %s are different, %s" \
% (axt1Filename,axt2Filename, different)
different = True
elif (different):
message = "%s and %s are different" \
% (axt1Filename,axt2Filename)
if (different):
print >>sys.stderr,"FAILURE: %s" % message
sys.exit(1)
print >>sys.stderr,"SUCCESS: %s and %s are equivalent" \
% (axt1Filename,axt2Filename)
# compare files
def compare_files(axt1,axt2,sortEm=False):
blocks1 = read_axt_blocks(axt1)
if (type(blocks1) == str): return (blocks1,"axt1")
blocks2 = read_axt_blocks(axt2)
if (type(blocks2) == str): return (blocks2,"axt2")
if (len(blocks1) != len(blocks2)):
return ("different number of blocks",None)
if (sortEm):
blocks1 = sort_blocks(blocks1)
blocks2 = sort_blocks(blocks2)
for ((block1,lineNum1),(block2,lineNum2)) in zip(blocks1,blocks2):
if (type(block1[0]) == str): block1 = convert_block(block1)
if (type(block2[0]) == str): block2 = convert_block(block2)
info1 = block1[0]
if (len(info1) != 9): return ("bad axt block at line %d" % lineNum1,"axt1")
info2 = block2[0]
if (len(info2) != 9): return ("bad axt block at line %d" % lineNum2,"axt2")
if (sortEm):
block1[0][0] = 0 # (clear axt record number)
block2[0][0] = 0 # (clear axt record number)
if (block1 == block2): continue
return "block at line %d vs block at line %d" % (lineNum1,lineNum2)
return False
# sort the blocks in a list, by everything but the axt record number
def sort_blocks(blocks):
newBlocks = []
for (block,lineNum) in blocks:
(info,text1,text2) = newBlock = convert_block(block)
key = info[1:]
newBlocks += [(key,newBlock,lineNum)]
newBlocks.sort()
return [(block,lineNum) for (key,block,lineNum) in newBlocks]
# convert a block from textual representation to something more amenable to
# comparisons and sorting
def convert_block(block):
(info,text1,text2) = block
info = info.split()
return (info,text1,text2)
# read all blocks from a file, a return a list of (block,lineNumber)
def read_axt_blocks(f):
blocks = []
block = None
lineNum = 0
for line in f:
lineNum += 1
line = line.strip()
if (line == "") or (line.startswith("#")):
if (block != None):
if (len(block) != 3):
return ("bad axt block at line %d" % blockLineNum)
blocks += [(block,blockLineNum)]
block = None
continue
if (block == None):
block = []
blockLineNum = lineNum
block += [line]
if (block != None):
if (len(block) != 3):
return ("bad axt block at line %d" % blockLineNum)
blocks += [(block,blockLineNum)]
return blocks
headerRe = re.compile("^(?P<stanza>.+) +\"(?P<name1>.+)\" +\"(?P<name2>.+)\"$")
def header_strip(s):
m = headerRe.match(s)
if (m == None):
return s
stanza = m.group("stanza")
name1 = m.group("name1").strip()
name2 = m.group("name2").strip()
if (name1.startswith(">")): name1 = name1[1:].strip()
if (name2.startswith(">")): name2 = name2[1:].strip()
return [stanza,name1,name2]
if __name__ == "__main__": main()
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