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import sys
from io import StringIO
from collections import defaultdict
import json
import signal
import time
import re
import portage
from portage.output import EOutput, TermProgressBar
from gentoolkit import pprinter as pp
class ProgressHandler(object):
def __init__(self, progress_bar):
self.curval = 0
self.maxval = 0
self.last_update = 0
self.min_display_latency = 0.2
self.progress_bar = progress_bar
def on_progress(self, maxval=None, increment=1, label=None):
self.maxval = maxval or self.maxval
self.curval += increment
if label:
self.progress_bar.label(label)
cur_time = time.time()
if cur_time - self.last_update >= self.min_display_latency:
self.last_update = cur_time
self.display()
def display(self):
raise NotImplementedError(self)
def progress_bar():
on_progress = None
progress_bar = TermProgressBar(title="euscan")
progress_bar.file = sys.stderr
progress_handler = ProgressHandler(progress_bar)
on_progress = progress_handler.on_progress
def display():
progress_bar.set(progress_handler.curval, progress_handler.maxval)
progress_handler.display = display
def sigwinch_handler(signum, frame):
lines, progress_bar.term_columns = portage.output.get_term_size()
signal.signal(signal.SIGWINCH, sigwinch_handler)
yield on_progress
# make sure the final progress is displayed
progress_handler.display()
signal.signal(signal.SIGWINCH, signal.SIG_DFL)
yield None
def clean_colors(string):
if type(string) is str:
string = re.sub("\033\[[0-9;]+m", "", string)
string = re.sub(r"\\u001b\[[0-9;]+m", "", string)
string = re.sub(r"\x1b\[[0-9;]+m", "", string)
return string
def transform_url(config, cpv, url):
if config['mirror']:
url = to_mirror(url)
if config['ebuild-uri']:
url = to_ebuild_uri(cpv, url)
return url
def to_ebuild_uri(cpv, url):
cat, pkg, ver, rev = portage.catpkgsplit(cpv)
p = '%s-%s' % (pkg, ver)
pvr = '%s%s' % (ver, '-%s' % rev if rev != 'r0' else '')
pf = '%s-%s' % (pkg, pvr)
evars = (
(p, 'P'),
(pkg, 'PN'),
(ver, 'PV'),
(rev, 'PR'),
(pvr, 'PVR'),
(pf, 'PF'),
(cat, 'CATEGORY')
)
for src, dst in evars:
url = url.replace(src, '${%s}' % dst)
return url
def to_mirror(url):
mirrors = portage.settings.thirdpartymirrors()
for mirror_name in mirrors:
for mirror_url in mirrors[mirror_name]:
if url.startswith(mirror_url):
url_part = url.split(mirror_url)[1]
return "mirror://%s%s%s" % (
mirror_name,
"" if url_part.startswith("/") else "/",
url_part
)
return url
class EOutputMem(EOutput):
"""
Override of EOutput, allows to specify an output file for writes
"""
def __init__(self, *args, **kwargs):
super(EOutputMem, self).__init__(*args, **kwargs)
self.out = StringIO()
def getvalue(self):
return self.out.getvalue()
def _write(self, f, msg):
super(EOutputMem, self)._write(self.out, msg)
class EuscanOutput(object):
"""
Class that handles output for euscan
"""
def __init__(self, config):
self.config = config
self.queries = defaultdict(dict)
self.current_query = None
def clean(self):
self.queries = defaultdict(dict)
self.current_query = None
def set_query(self, query):
self.current_query = query
if query is None:
return
if query in self.queries:
return
if self.config["format"]:
output = EOutputMem()
else:
output = EOutput()
self.queries[query] = {
"output": output,
"result": [],
"metadata": {},
}
def get_formatted_output(self, format_=None):
data = {}
for query in self.queries:
data[query] = {
"result": self.queries[query]["result"],
"metadata": self.queries[query]["metadata"],
"messages": self.queries[query]["output"].getvalue(),
}
format_ = format_ or self.config["format"]
if format_.lower() == "json":
return json.dumps(data, indent=self.config["indent"])
elif format_.lower() == "dict":
return data
else:
raise TypeError("Invalid output format")
def result(self, cp, version, urls, handler, confidence):
from euscan.version import get_version_type
cpv = '%s-%s' % (cp, version)
urls = ' '.join(
transform_url(self.config, cpv, url) for url in urls.split()
)
if self.config['format'] in ['json', 'dict']:
_curr = self.queries[self.current_query]
_curr["result"].append(
{
"version": version,
"urls": urls.split(),
"handler": handler,
"confidence": confidence,
"type": get_version_type(version)
}
)
else:
if not self.config['quiet']:
print "Upstream Version:", pp.number("%s" % version),
print pp.path(" %s" % urls)
else:
print pp.cpv("%s-%s" % (cp, version)) + ":", pp.path(urls)
def metadata(self, key, value, show=True):
if self.config["format"]:
self.queries[self.current_query]["metadata"][key] = value
elif show:
print "%s: %s" % (key.capitalize(), value)
def __getattr__(self, key):
if not self.config["quiet"] and self.current_query is not None:
output = self.queries[self.current_query]["output"]
return getattr(output, key)
else:
return lambda *x: None
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