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#!/usr/bin/env python
"""
Compare two lav files, reporting differences but ignoring some trivial ones
---------------------------------------------------------------------------
:Author: Bob Harris (rsharris@bx.psu.edu)
"""
import sys
def usage(s=None):
message = """
lav_diff lav_file1 lav_file2
"""
if (s == None): sys.exit (message)
else: sys.exit ("%s\n%s" % (s,message))
def main():
# parse the command line
if (len(sys.argv) < 3):
usage("you must specify two lav files")
elif (len(sys.argv) > 3):
usage("wrong number of arguments")
lav1Filename = sys.argv[1]
lav2Filename = sys.argv[2]
# compare the files
lav1 = file(lav1Filename,"rt")
lav2 = file(lav2Filename,"rt")
different = True
stanza = None
lineNum = 0
while (True):
lineNum += 1
line1 = lav1.readline()
line2 = lav2.readline()
if (line1 == "") and (line2 == ""):
different = False
break
line1 = line1.rstrip()
line2 = line2.rstrip()
if (stanza != None):
if (line1 == "}") != (line2 == "}"): break
if (line1 == "}") and (line2 == "}"):
stanza = None
continue
stanzaIx += 1
if (stanza == "d") and (stanzaIx == 1):
continue # ignore command line differences
elif (stanza == "s") and (stanzaIx <= 2):
line1 = line1.strip()
line2 = line2.strip()
elif (stanza == "h") and (stanzaIx <= 2):
line1 = header_strip(line1)
line2 = header_strip(line2)
if (line1 != line2):
# print >>sys.stderr,"%s\n%s" % (line1,line2)
break
if (stanza != None) and (line1 == "}"):
stanza = None
continue
if (line1.endswith("{")):
stanza = line1[:-1].strip()
stanzaIx = 0
if (different):
print >>sys.stderr,"FAILURE: %s and %s are different (line %d)" \
% (lav1Filename,lav2Filename,lineNum)
sys.exit(1)
print >>sys.stderr,"SUCCESS: %s and %s are equivalent" \
% (lav1Filename,lav2Filename)
def header_strip(s):
s = s.strip()
if (s.startswith("\"")) and (s.endswith("\"")):
s = s[1:-1].strip()
if (s.startswith(">")):
s = s[1:].strip()
return s
if __name__ == "__main__": main()
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