1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/scripts/chg-len.py	Tue Sep 16 08:51:02 2008 +0100
     1.3 @@ -0,0 +1,39 @@
     1.4 +#! /usr/bin/env python
     1.5 +
     1.6 +import sys
     1.7 +import os
     1.8 +
     1.9 +if len(sys.argv)>1 and sys.argv[1] in ["-h","--help"]:
    1.10 +    print """
    1.11 +This utility just prints the length of the longest path
    1.12 +in the revision graph from revison 0 to the current one.
    1.13 +"""
    1.14 +    exit(0)
    1.15 +plist = os.popen("hg parents --template='{rev}\n'").readlines()
    1.16 +if len(plist)>1:
    1.17 +    print "You are in the process of merging"
    1.18 +    exit(1)
    1.19 +PAR = int(plist[0])
    1.20 +
    1.21 +f = os.popen("hg log -r 0:tip --template='{rev} {parents}\n'").readlines()
    1.22 +REV = -1
    1.23 +lengths=[]
    1.24 +for l in f:
    1.25 +    REV+=1
    1.26 +    s = l.split()
    1.27 +    rev = int(s[0])
    1.28 +    if REV != rev:
    1.29 +        print "Something is seriously wrong"
    1.30 +        exit(1)
    1.31 +    if len(s) == 1:
    1.32 +        par1 = par2 = rev - 1
    1.33 +    elif len(s) == 2:
    1.34 +        par1 = par2 = int(s[1].split(":")[0])
    1.35 +    else:
    1.36 +        par1 = int(s[1].split(":")[0])
    1.37 +        par2 = int(s[2].split(":")[0])
    1.38 +    if rev == 0:
    1.39 +        lengths.append(0)
    1.40 +    else:
    1.41 +        lengths.append(max(lengths[par1],lengths[par2])+1)
    1.42 +print lengths[PAR]