#!/usr/bin/env python
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# Revision $Id$

"""
Generate HTML reports from coverage.py (aka python-coverage). This is
currently a no-frills backend tool.
"""

import sys
import roslib

try:
    import coverage
except ImportError, e:
    sys.stderr.write("ERROR: cannot import python-coverage, coverage report will not run.\nTo install coverage, run 'easy_install coverage'\n")
    sys.exit(1)

def coverage_html():
    import os.path
    if not os.path.isfile('.coverage-modules'):
        sys.stderr.write("No .coverage-modules file; nothing to do\n")
        return

    with open('.coverage-modules','r') as f:
        modules = [x for x in f.read().split('\n') if x.strip()]

    cov = coverage.coverage()
    cov.load()

    # import everything
    for m in modules:
        try:
            base = m.split('.')[0]
            roslib.load_manifest(base)
            __import__(m)
        except:
            sys.stderr.write("WARN: cannot import %s\n"%(base))

    modlist = '\n'.join([" * %s"%m for m in modules])
    sys.stdout.write("Generating for\n%s\n"%(modlist))

    # load the module instances to pass to coverage so it can generate annotation html reports
    mods = []

    # TODO: rewrite, buggy
    for m in modules:
        mods.extend([v for v in sys.modules.values() if v and v.__name__.startswith(m) and not v in mods])
        
    # dump the output to covhtml directory
    cov.html_report(mods, directory="covhtml")
    
if __name__ == '__main__':
    coverage_html()
