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#!/usr/bin/env python
import os, tarfile, re, shutil, sys
from snapshot import *
def unpack_snapshot(triple, dl_path):
print("opening snapshot " + dl_path)
tar = tarfile.open(dl_path)
kernel = get_kernel(triple)
for p in tar.getnames():
name = p.replace("rust-stage0/", "", 1);
stagep = os.path.join(triple, "stage0")
fp = os.path.join(stagep, name)
print("extracting " + p)
tar.extract(p, download_unpack_base)
tp = os.path.join(download_unpack_base, p)
shutil.move(tp, fp)
tar.close()
shutil.rmtree(download_unpack_base)
def determine_curr_snapshot(triple):
i = 0
platform = get_platform(triple)
found_file = False
found_snap = False
hsh = None
date = None
rev = None
f = open(snapshotfile)
for line in f.readlines():
i += 1
parsed = parse_line(i, line)
if (not parsed): continue
if found_snap and parsed["type"] == "file":
if parsed["platform"] == platform:
hsh = parsed["hash"]
found_file = True
break;
elif parsed["type"] == "snapshot":
date = parsed["date"]
rev = parsed["rev"]
found_snap = True
if not found_snap:
raise Exception("no snapshot entries in file")
if not found_file:
raise Exception("no snapshot file found for platform %s, rev %s" %
(platform, rev))
return full_snapshot_name(date, rev, platform, hsh)
# Main
# this gets called with one or two arguments:
# The first is the O/S triple.
# The second is an optional path to the snapshot to use.
triple = sys.argv[1]
if len(sys.argv) == 3:
dl_path = sys.argv[2]
else:
snap = determine_curr_snapshot(triple)
dl = os.path.join(download_dir_base, snap)
url = download_url_base + "/" + snap
print("determined most recent snapshot: " + snap)
if (not os.path.exists(dl)):
get_url_to_file(url, dl)
if (snap_filename_hash_part(snap) == hash_file(dl)):
print("got download with ok hash")
else:
raise Exception("bad hash on download")
dl_path = os.path.join(download_dir_base, snap)
unpack_snapshot(triple, dl_path)
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