import sys
import py

def main(author, month):
    data = py.process.cmdexec('svn log -v')

    sep = "------------------------------------------------------------------------"
    sections = data.split(sep)

    monthly_added = 0
    monthly_removed = 0

    for section in sections:
        section = section.strip()
        section_lines = section.splitlines()
        if not section_lines: continue
        try:
            rev, auth, date, junk = section_lines[0].split("|")
        except ValueError:
            continue
        if author not in auth:
            continue
        if month not in date:
            continue
        print section
        added, removed = get_changed_lines(int(rev[1:]))
        monthly_added += added
        monthly_removed += removed
        print "Added:", added
        print "Removed: ", removed
        print "Net: ", added-removed
        print sep
    print "Monthly Added:", monthly_added
    print "Monthly Removed:", monthly_removed
    print "Monthly Net:", monthly_added-monthly_removed

def get_changed_lines(rev):
    out = py.process.cmdexec('svn diff -r %s:%s' % (rev-1, rev))
    out_lines = out.strip().splitlines()
    added = 0
    removed = 0
    for line in out_lines:
        if line.startswith('+ '):
            added += 1
        elif line.startswith('- '):
            removed += 1
    return added, removed

if __name__ == '__main__':
    main(sys.argv[1], sys.argv[2])