# renaming a working package.
usage = """usage:
python renamewp.py old new
where old and new are decimal WP numbers in the range 1-99.
"""

import os, sys, mkxref

def do_rename(old, new):
    oldS = "WP%02d" % old
    newS = "WP%02d" % new
    wpfiles = mkxref.get_wps_from_dir()
    if wpfiles.has_key(oldS):
        if wpfiles.has_key(newS):
            raise ValueError, "cannot rename because %s is in the way!" % wpfiles[newS]
        oldName = wpfiles[oldS]
        p = len(mkxref.START_STR)
        newName = "%s%02d%s" % (oldName[:p], new, oldName[p+2:])
        cmd = 'svn move "%s" "%s"' % (oldName, newName)
        print ">>>", cmd
        err = os.system(cmd)
        if err:
            print "aborting due to the above error"
            sys.exit(1)
        del wpfiles[oldS]
        wpfiles[newS] = newName
    workfiles = os.listdir(".")
    workfiles = [fname for fname in workfiles if os.path.splitext(fname)[-1].lower() == ".txt"]
    find = oldS+"_"
    repl = newS+"_"
    for fname in workfiles:
        txt = file(fname).read()
        if txt.find(find) >= 0:
            print "rewriting %s" % fname
            txt = txt.replace(find, repl)
            file(fname, "w").write(txt)
    print "re-creating cross references"
    mkxref.build_xref_file()
    print "done."
    

def main():
    args = sys.argv[1:]
    try:
        old, new = map(int, args)
        if min(old, new) < 1 or max(old, new) > 99:
            raise ValueError
    except:
        print usage
        sys.exit(1)
    do_rename(old, new)

if __name__ == "__main__":
    main()