96 lines
2.5 KiB
Python
Executable File
96 lines
2.5 KiB
Python
Executable File
#!/usr/bin/env python
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# xfail-license
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import os, tarfile, re, shutil, sys
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from snapshot import *
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def unpack_snapshot(triple, dl_path):
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print("opening snapshot " + dl_path)
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tar = tarfile.open(dl_path)
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kernel = get_kernel(triple)
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stagep = os.path.join(triple, "stage0")
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# Remove files from prior unpackings, since snapshot rustc may not
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# be able to disambiguate between multiple candidate libraries.
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# (Leave dirs in place since extracting step still needs them.)
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for root, _, files in os.walk(stagep):
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for f in files:
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print("removing " + os.path.join(root, f))
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os.unlink(os.path.join(root, f))
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for p in tar.getnames():
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name = p.replace("rust-stage0/", "", 1);
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fp = os.path.join(stagep, name)
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print("extracting " + p)
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tar.extract(p, download_unpack_base)
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tp = os.path.join(download_unpack_base, p)
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if os.path.isdir(tp) and os.path.exists(fp):
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continue
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shutil.move(tp, fp)
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tar.close()
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shutil.rmtree(download_unpack_base)
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def determine_curr_snapshot(triple):
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i = 0
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platform = get_platform(triple)
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found_file = False
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found_snap = False
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hsh = None
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date = None
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rev = None
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f = open(snapshotfile)
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for line in f.readlines():
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i += 1
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parsed = parse_line(i, line)
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if (not parsed): continue
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if found_snap and parsed["type"] == "file":
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if parsed["platform"] == platform:
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hsh = parsed["hash"]
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found_file = True
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break;
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elif parsed["type"] == "snapshot":
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date = parsed["date"]
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rev = parsed["rev"]
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found_snap = True
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if not found_snap:
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raise Exception("no snapshot entries in file")
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if not found_file:
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raise Exception("no snapshot file found for platform %s, rev %s" %
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(platform, rev))
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return full_snapshot_name(date, rev, platform, hsh)
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# Main
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# this gets called with one or two arguments:
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# The first is the O/S triple.
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# The second is an optional path to the snapshot to use.
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triple = sys.argv[1]
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if len(sys.argv) == 3:
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dl_path = sys.argv[2]
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else:
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snap = determine_curr_snapshot(triple)
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dl = os.path.join(download_dir_base, snap)
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url = download_url_base + "/" + snap
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print("determined most recent snapshot: " + snap)
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if (not os.path.exists(dl)):
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get_url_to_file(url, dl)
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if (snap_filename_hash_part(snap) == hash_file(dl)):
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print("got download with ok hash")
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else:
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raise Exception("bad hash on download")
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dl_path = os.path.join(download_dir_base, snap)
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unpack_snapshot(triple, dl_path)
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