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# Copyright(c) 2009, Gentoo Foundation
#
# Licensed under the GNU General Public License, v2 or higher
#
# $Header: $
"""Displays the ChangeLog entry for the latest installable version of an atom"""
from __future__ import print_function
# Move to Imports sections when Python 2.6 is stable
__docformat__ = 'epytext'
# =======
# Imports
# =======
import sys
from getopt import gnu_getopt, GetoptError
from portage import os
import gentoolkit.pprinter as pp
from gentoolkit import errors
from gentoolkit.atom import Atom
from gentoolkit.equery import format_options, mod_usage
from gentoolkit.helpers import ChangeLog
from gentoolkit.query import Query
# =======
# Globals
# =======
QUERY_OPTS = {
'onlyLatest': False,
'showFullLog': False,
'limit': None,
'from': None,
'to': None
}
# =========
# Functions
# =========
def print_help(with_description=True):
"""Print description, usage and a detailed help message.
@type with_description: bool
@param with_description: if true, print module's __doc__ string
"""
if with_description:
print(__doc__.strip())
print()
print(mod_usage(mod_name="changes"))
print()
print(pp.emph("examples"))
print (" c portage # show latest visible "
"version's entry")
print(" c portage --full --limit=3 # show 3 latest entries")
print(" c '=sys-apps/portage-2.1.6*' # use atom syntax")
print(" c portage --from=2.2_rc60 --to=2.2_rc70 # use version ranges")
print()
print(pp.command("options"))
print(format_options((
(" -h, --help", "display this help message"),
(" -l, --latest", "display only the latest ChangeLog entry"),
(" -f, --full", "display the full ChangeLog"),
(" --limit=NUM",
"limit the number of entries displayed (with --full)"),
(" --from=VER", "set which version to display from"),
(" --to=VER", "set which version to display to"),
)))
def parse_module_options(module_opts):
"""Parse module options and update QUERY_OPTS"""
opts = (x[0] for x in module_opts)
posargs = (x[1] for x in module_opts)
for opt, posarg in zip(opts, posargs):
if opt in ('-h', '--help'):
print_help()
sys.exit(0)
elif opt in ('-f', '--full'):
QUERY_OPTS['showFullLog'] = True
elif opt in ('-l', '--latest'):
QUERY_OPTS['onlyLatest'] = True
elif opt in ('--limit',):
set_limit(posarg)
elif opt in ('--from',):
QUERY_OPTS['from'] = posarg
elif opt in ('--to',):
QUERY_OPTS['to'] = posarg
def print_entries(entries):
"""Print entries and strip trailing whitespace from the last entry."""
len_entries = len(entries)
for i, entry in enumerate(entries, start=1):
if i < len_entries:
print(entry)
else:
print(entry.strip())
def set_limit(posarg):
"""Set a limit in QUERY_OPTS on how many ChangeLog entries to display.
Die if posarg is not an integer.
"""
if posarg.isdigit():
QUERY_OPTS['limit'] = int(posarg)
else:
err = "Module option --limit requires integer (got '%s')"
sys.stderr.write(pp.error(err % posarg))
print()
print_help(with_description=False)
sys.exit(2)
def main(input_args):
"""Parse input and run the program"""
short_opts = "hlf"
long_opts = ('help', 'full', 'from=', 'latest', 'limit=', 'to=')
try:
module_opts, queries = gnu_getopt(input_args, short_opts, long_opts)
except GetoptError as err:
sys.stderr.write(pp.error("Module %s" % err))
print()
print_help(with_description=False)
sys.exit(2)
parse_module_options(module_opts)
if not queries:
print_help()
sys.exit(2)
first_run = True
for query in (Query(x) for x in queries):
if not first_run:
print()
match = query.find_best()
changelog_path = os.path.join(match.package_path(), 'ChangeLog')
changelog = ChangeLog(changelog_path)
#
# Output
#
if (QUERY_OPTS['onlyLatest'] or (
changelog.entries and not changelog.indexed_entries
)):
print(changelog.latest.strip())
else:
end = QUERY_OPTS['limit'] or len(changelog.indexed_entries)
if QUERY_OPTS['to'] or QUERY_OPTS['from']:
print_entries(
changelog.entries_matching_range(
from_ver=QUERY_OPTS['from'],
to_ver=QUERY_OPTS['to']
)[:end]
)
elif QUERY_OPTS['showFullLog']:
print_entries(changelog.full[:end])
else:
# Raises GentoolkitInvalidAtom here if invalid
if query.is_ranged():
atom = Atom(str(query))
else:
atom = '=' + str(match.cpv)
print_entries(changelog.entries_matching_atom(atom)[:end])
first_run = False
# vim: set ts=4 sw=4 tw=79:
|
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