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#!/bin/python
###############################################################################
#
# Diff two licenses.xml files. There are two cases:
# * Two arguments
# In this case, the two arguments are the two files to compare
#
# * No arguments
# In this casem the license files are specified by the following
# parameters in pardoc-distro.xml:
# - prev_baseline
# - prev_lic_file
# - new_lic_file
#
# The result is presented as three sets:
# 1) Removed
# Packages present in the previous file, but not in the new.
#
# 2) Added
# Packages present in the new file, but not in the previous.
#
# 3) Changed
# Packages present in both files, but with different versions. If more than
# one version of a package is included, then all difference in the version
# set causes the package to be listed as changed.
# E.g.
# (v1) -> (v2)
# (v1, v2) -> (v2, v3)
#
# Note that packages with the unchanged version is not listed.
#
# The output is presented as XML code printed to stdout. A summary is printed
# to STDERR at the end.
#
###############################################################################
import os
import sys
import subprocess as sp
import xml.etree.ElementTree as ET
import re
repo_root = sp.check_output(["git", "rev-parse", "--show-toplevel"]).rstrip()
script_root = os.path.dirname(os.path.realpath(__file__))
param_file = os.path.join(script_root, "docsrc_common/pardoc-distro.xml")
def get_param(param_name):
pat = re.compile("%s.*>([^<>]+)</" % param_name)
with open(param_file) as f:
for line in f:
m = pat.search(line)
if m:
return m.group(1)
return None
def get_pkgs(file_spec):
if file_spec.find(":") >= 0:
s = sp.check_output(("git", "show", file_spec))
else:
f = open(file_spec)
s = f.read()
f.close()
del f
# ET can't handle some special quotes
for old, new in (("”", """), ("”", """)):
s = s.replace(old, new)
root = ET.fromstring(s)
for node in root.iter("section"):
if "id" in node.attrib:
if node.attrib["id"] == "licenses_packages":
break
else:
return None
for node in node:
if node.tag == "informaltable":
break
else:
return None
tab = node[0][-1]
plist = dict()
for row in tab:
pname = row[0].text
pver = row[1].text
if not pname in plist:
plist[pname] = set()
plist[pname].add(pver)
return set(plist), plist
#----------------------------------------
if len(sys.argv) == 3:
new_file, prev_file = sys.argv[1:3]
elif len(sys.argv) == 1:
prev_baseline = get_param("prev_baseline")
prev_lic_file = get_param("prev_lic_file")
new_lic_file = get_param("new_lic_file")
new_file = os.path.relpath(os.path.join(repo_root, new_lic_file))
prev_file = "%s:%s" % (prev_baseline, prev_lic_file)
else:
sys.stderr.write("Usage:\n")
sys.stderr.write(" 1) %s\n" % sys.argv[0])
sys.stderr.write(" 2) %s " % sys.argv[0])
sys.stderr.write("<new license file> <old license file>\n")
sys.stderr.write("\n")
sys.stderr.write("In case 1, the files are specified using the following\n")
sys.stderr.write("parameters in pardoc-distro.xml:\n")
sys.stderr.write(" - prev_baseline\n")
sys.stderr.write(" - prev_lic_file\n")
sys.stderr.write(" - new_lic_file\n")
exit()
sys.stderr.write("New license file : %s\n" % new_file)
sys.stderr.write("Prev license file : %s\n" % prev_file)
old_pset, old_pdict = get_pkgs(prev_file)
new_pset, new_pdict = get_pkgs(new_file)
added = new_pset - old_pset # Set subtraction
removed = old_pset - new_pset # Set subtraction
common = old_pset & new_pset
changed = [ p for p in common if old_pdict[p] != new_pdict[p] ]
print '<?xml version="1.0" encoding="ISO-8859-1"?>'
print '<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"'
print '"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">'
print '<section id="relinfo-package-set-changes">'
print ' <title>Changes in the Set of Provided Package</title>'
print ' <para>'
print ' This section describes changes in the provided packages.'
print ' </para>'
print ' <section id="relinfo-added-packages">'
print ' <title>Added Packages</title>'
print ' <informaltable>'
print ' <tgroup cols="2">'
print ' <thead>'
print ' <row>'
print ' <entry>Package</entry>'
print ' <entry>Version(s)</entry>'
print ' </row>'
print ' </thead>'
print ' <tbody>'
for p in sorted(list(added)):
print ' <row>'
print ' <entry>%s</entry>' % p
print ' <entry>%s</entry>' % ", ".join(sorted(new_pdict[p]))
print ' </row>'
print ' </tbody>'
print ' </tgroup>'
print ' </informaltable>'
print ' </section>'
print ' <section id="relinfo-removed-packages">'
print ' <title>Removed Packages</title>'
print ' <informaltable>'
print ' <tgroup cols="2">'
print ' <thead>'
print ' <row>'
print ' <entry>Package</entry>'
print ' <entry>Version(s)</entry>'
print ' </row>'
print ' </thead>'
print ' <tbody>'
for p in sorted(list(removed)):
print ' <row>'
print ' <entry>%s</entry>' % p
print ' <entry>%s</entry>' % ", ".join(sorted(old_pdict[p]))
print ' </row>'
print ' </tbody>'
print ' </tgroup>'
print ' </informaltable>'
print ' </section>'
print ' <section id="relinfo-changed-packages">'
print ' <title>Changed Package Versions</title>'
print ' <informaltable>'
print ' <tgroup cols="3">'
print ' <thead>'
print ' <row>'
print ' <entry>Package</entry>'
print ' <entry>Previous Version(s)</entry>'
print ' <entry>New Version(s)</entry>'
print ' </row>'
print ' </thead>'
print ' <tbody>'
for p in sorted(list(changed)):
print ' <row>'
print ' <entry>%s</entry>' % p
print ' <entry>%s</entry>' % ", ".join(sorted(old_pdict[p]))
print ' <entry>%s</entry>' % ", ".join(sorted(new_pdict[p]))
print ' </row>'
print ' </tbody>'
print ' </tgroup>'
print ' </informaltable>'
print ' </section>'
print '</section>'
sys.stderr.write("Package Summary:\n")
sys.stderr.write(" Prev file : %3d\n" % len(old_pset))
sys.stderr.write(" New file : %3d\n" % len(new_pset))
sys.stderr.write(" Added : %3d\n" % len(added))
sys.stderr.write(" Removed : %3d\n" % len(removed))
sys.stderr.write(" Changed : %3d\n" % len(changed))
sys.stderr.write(" Unchanged : %3d\n" % (len(common) - len(changed)))
sys.stderr.write("Done\n")
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