#!/usr/bin/env python
#
# Print the build information embedded in a header file.
#
# Expects to be invoked from the command line with a file name and a
# list of directories to search.  The file name will be one of the
# following:
#
#   llversionserver.h
#   llversionviewer.h
#
# The directory list that follows will include indra/llcommon, where
# these files live.

import errno, os, re

def get_version(filename):
    fp = open(filename)
    data = fp.read()
    fp.close()

    vals = {}
    m = re.search('<viewer version_major="(\d+)" />', data)
    vals['major'] = m.group(1)
    m = re.search('<viewer version_minor="(\d+)" />', data)
    vals['minor'] = m.group(1)
    m = re.search('<viewer version_patch="(\d+)" />', data)
    vals['patch'] = m.group(1)
    m = re.search('<viewer version_test="(.*)" />', data)
    vals['test'] = m.group(1)

    version = "%(major)s.%(minor)s.%(patch)s" % vals

    if len(vals['test']) > 0:
        # Replace some puncuation and spaces with '-' in the test version
        vals['test'] = re.sub('[ \t:;,+/\\"\'`]+', '-', vals['test'])
        version += "-%(test)s" % vals

    return version


if __name__ == '__main__':
    import sys

    try:
        for path in sys.argv[2:]:
            name = os.path.join(path, sys.argv[1])
            try:
                print get_version(name)
                break
            except OSError, err:
                if err.errno != errno.ENOENT:
                    raise
        else:
            print >> sys.stderr, 'File not found:', sys.argv[1]
            sys.exit(1)
    except AttributeError:
        print >> sys.stderr, 'Error: malformatted file: ', name
        sys.exit(1)
    except IndexError:
        print >> sys.stderr, ('Usage: %s llversion[...].h [directories]' %
                              sys.argv[0])