#! /usr/bin/env python
#
# Simple script to create the table that lists the packages available
# for download.  This expects the downloadable files and the Makefile
# to be in the current directory.
#
# The output of this script can be pasted directly into the download
# page for the documentation.

import os
import sys

from os.path import isfile


PKG_TYPES = [
    # human name, filename prefix
    ("HTML", "html"),
    ("PDF (US-Letter)", "pdf-letter"),
    ("PDF (A4)", "pdf-a4"),
    ("PostScript (US-Letter)", "postscript-letter"),
    ("PostScript (A4)", "postscript-a4"),
    ("GNU info", "info"),
    ("iSilo", "isilo"),
    ("LaTeX", "latex"),
    ]


fp = open("Makefile")
for line in fp:
    line = line.replace('=', ' ', 1)
    parts = line.split()
    if parts[:1] == ["RELEASE"]:
        release = parts[1]
        break
else:
    print >>sys.stderr, "Could not locate RELEASE in Makefile."
    sys.exit(1)

print '''\
<table border="1" cellpadding="3" align="center">
  <thead>
    <tr bgcolor="#99ccff"><th rowspan="2">Content</th>
                          <th colspan="3">Format</th></tr>
    <tr bgcolor="#99ccff"><th>ZIP</th><th>GZip</th><th>BZip2</th></tr>
    </thead>
  <tbody>'''

# formatted using FILE_TEMPLATE % (release, prefix, release, extension)
FILE_TEMPLATE = '''\
        <td><a href="../../ftp/ganga/doc/%s/%s-%s%s"
            >%dK</a></td>'''

NO_FILE_TEMPLATE = '''\
        <td>&nbsp;</td>'''

def get_size(prefix, ext):
    fn = "%s-%s%s" % (prefix, release, ext)
    return int(round(os.path.getsize(fn) / 1024.0))

def get_file_cell(prefix, ext, have):
    if have:
        kb = get_size(prefix, ext)
        return FILE_TEMPLATE % (release, prefix, release, ext, kb)
    else:
        return NO_FILE_TEMPLATE

for name, prefix in PKG_TYPES:
    zip_fn = "%s-%s.zip" % (prefix, release)
    tgz_fn = "%s-%s.tgz" % (prefix, release)
    bz2_fn = "%s-%s.tar.bz2" % (prefix, release)

    have_zip = isfile(zip_fn)
    have_tgz = isfile(tgz_fn)
    have_bz2 = isfile(bz2_fn)

    if have_zip or have_tgz or have_bz2:
        print "    <tr><td>%s</td>" % name

        print get_file_cell(prefix, ".zip", have_zip)
        print get_file_cell(prefix, ".tgz", have_tgz)
        print get_file_cell(prefix, ".tar.bz2", have_bz2)

        print "      </tr>"

print '''\
    </tbody>
</table>
'''
