view tests/test-archive.t @ 40326:fed697fa1734

sqlitestore: file storage backend using SQLite

This commit provides an extension which uses SQLite to store file
data (as opposed to revlogs).

As the inline documentation describes, there are still several
aspects to the extension that are incomplete. But it's a start.
The extension does support basic clone, checkout, and commit
workflows, which makes it suitable for simple use cases.

One notable missing feature is support for "bundlerepos." This is
probably responsible for the most test failures when the extension
is activated as part of the test suite.

All revision data is stored in SQLite. Data is stored as zstd
compressed chunks (default if zstd is available), zlib compressed
chunks (default if zstd is not available), or raw chunks (if
configured or if a compressed delta is not smaller than the raw
delta). This makes things very similar to revlogs.

Unlike revlogs, the extension doesn't yet enforce a limit on delta
chain length. This is an obvious limitation and should be addressed.
This is somewhat mitigated by the use of zstd, which is much faster
than zlib to decompress.

There is a dedicated table for storing deltas. Deltas are stored
by the SHA-1 hash of their uncompressed content. The "fileindex" table
has columns that reference the delta for each revision and the base
delta that delta should be applied against. A recursive SQL query
is used to resolve the delta chain along with the delta data.

By storing deltas by hash, we are able to de-duplicate delta storage!
With revlogs, the same deltas in different revlogs would result in
duplicate storage of that delta. In this scheme, inserting the
duplicate delta is a no-op and delta chains simply reference the
existing delta.

When initially implementing this extension, I did not have
content-indexed deltas and deltas could be duplicated across files
(just like revlogs). When I implemented content-indexed deltas, the
size of the SQLite database for a full clone of mozilla-unified
dropped:

before: 2,554,261,504 bytes
after:  2,488,754,176 bytes

Surprisingly, this is still larger than the bytes size of revlog
files:

revlog files: 2,104,861,230 bytes
du -b:        2,254,381,614

I would have expected storage to be smaller since we're not limiting
delta chain length and since we're using zstd instead of zlib. I
suspect the SQLite indexes and per-column overhead account for the
bulk of the differences. (Keep in mind that revlog uses a 64-byte
packed struct for revision index data and deltas are stored without
padding. Aside from the 12 unused bytes in the 32 byte node field,
revlogs are pretty efficient.) Another source of overhead is file
name storage. With revlogs, file names are stored in the filesystem.
But with SQLite, we need to store file names in the database. This is
roughly equivalent to the size of the fncache file, which for the
mozilla-unified repository is ~34MB.

Since the SQLite database isn't append-only and since delta chains
can reference any delta, this opens some interesting possibilities.
For example, we could store deltas in reverse, such that fulltexts
are stored for newer revisions and deltas are applied to reconstruct
older revisions. This is likely a more optimal storage strategy for
version control, as new data tends to be more frequently accessed
than old data. We would obviously need wire protocol support for
transferring revision data from newest to oldest. And we would
probably need some kind of mechanism for "re-encoding" stores. But
it should be doable.

This extension is very much experimental quality. There are a handful
of features that don't work. It probably isn't suitable for day-to-day
use. But it could be used in limited cases (e.g. read-only checkouts
like in CI). And it is also a good proving ground for alternate
storage backends. As we continue to define interfaces for all things
storage, it will be useful to have a viable alternate storage backend
to see how things shake out in practice.

test-storage.py passes on Python 2 and introduces no new test failures on
Python 3. Having the storage-level unit tests has proved to be insanely
useful when developing this extension. Those tests caught numerous bugs
during development and I'm convinced this style of testing is the way
forward for ensuring alternate storage backends work as intended. Of
course, test coverage isn't close to what it needs to be. But it is
a start. And what coverage we have gives me confidence that basic store
functionality is implemented properly.

Differential Revision: https://phab.mercurial-scm.org/D4928

#require serve

  $ hg init test
  $ cd test
  $ echo foo>foo
  $ hg commit -Am 1 -d '1 0'
  adding foo
  $ echo bar>bar
  $ hg commit -Am 2 -d '2 0'
  adding bar
  $ mkdir baz
  $ echo bletch>baz/bletch
  $ hg commit -Am 3 -d '1000000000 0'
  adding baz/bletch
  $ hg init subrepo
  $ touch subrepo/sub
  $ hg -q -R subrepo ci -Am "init subrepo"
  $ echo "subrepo = subrepo" > .hgsub
  $ hg add .hgsub
  $ hg ci -m "add subrepo"

  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > share =
  > EOF

hg subrepos are shared when the parent repo is shared

  $ cd ..
  $ hg share test shared1
  updating working directory
  sharing subrepo subrepo from $TESTTMP/test/subrepo
  5 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cat shared1/subrepo/.hg/sharedpath
  $TESTTMP/test/subrepo/.hg (no-eol)

hg subrepos are shared into existence on demand if the parent was shared

  $ hg clone -qr 1 test clone1
  $ hg share clone1 share2
  updating working directory
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg -R clone1 -q pull
  $ hg -R share2 update tip
  sharing subrepo subrepo from $TESTTMP/test/subrepo
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cat share2/subrepo/.hg/sharedpath
  $TESTTMP/test/subrepo/.hg (no-eol)
  $ echo 'mod' > share2/subrepo/sub
  $ hg -R share2 ci -Sqm 'subrepo mod'
  $ hg -R clone1 update -C tip
  cloning subrepo subrepo from $TESTTMP/test/subrepo
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ find share2 | egrep 'sharedpath|00.+\.i' | sort
  share2/.hg/sharedpath
  share2/subrepo/.hg/sharedpath
  $ hg -R share2 unshare
  unsharing subrepo 'subrepo'
  $ find share2 | egrep 'sharedpath|00.+\.i' | sort
  share2/.hg/00changelog.i
  share2/.hg/sharedpath.old
  share2/.hg/store/00changelog.i
  share2/.hg/store/00manifest.i
  share2/subrepo/.hg/00changelog.i
  share2/subrepo/.hg/sharedpath.old
  share2/subrepo/.hg/store/00changelog.i
  share2/subrepo/.hg/store/00manifest.i
  $ hg -R share2/subrepo log -r tip -T compact
  1[tip]   559dcc9bfa65   1970-01-01 00:00 +0000   test
    subrepo mod
  
  $ rm -rf clone1

  $ hg clone -qr 1 test clone1
  $ hg share clone1 shared3
  updating working directory
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg -R clone1 -q pull
  $ hg -R shared3 archive --config ui.archivemeta=False -r tip -S archive
  sharing subrepo subrepo from $TESTTMP/test/subrepo
  $ cat shared3/subrepo/.hg/sharedpath
  $TESTTMP/test/subrepo/.hg (no-eol)
  $ diff -r archive test
  Only in test: .hg
  Common subdirectories: archive/baz and test/baz (?)
  Common subdirectories: archive/subrepo and test/subrepo (?)
  Only in test/subrepo: .hg
  [1]
  $ rm -rf archive

  $ cd test
  $ echo "[web]" >> .hg/hgrc
  $ echo "name = test-archive" >> .hg/hgrc
  $ echo "archivesubrepos = True" >> .hg/hgrc
  $ cp .hg/hgrc .hg/hgrc-base
  > test_archtype() {
  >     echo "allow-archive = $1" >> .hg/hgrc
  >     test_archtype_run "$@"
  > }
  > test_archtype_deprecated() {
  >     echo "allow$1 = True" >> .hg/hgrc
  >     test_archtype_run "$@"
  > }
  > test_archtype_run() {
  >     hg serve -p $HGPORT -d --pid-file=hg.pid -E errors.log \
  >         --config extensions.blackbox= --config blackbox.track=develwarn
  >     cat hg.pid >> $DAEMON_PIDS
  >     echo % $1 allowed should give 200
  >     get-with-headers.py --bodyfile body localhost:$HGPORT "archive/tip.$2" -
  >     f --size --sha1 body
  >     echo % $3 and $4 disallowed should both give 403
  >     get-with-headers.py --bodyfile body localhost:$HGPORT "archive/tip.$3" -
  >     f --size --sha1 body
  >     get-with-headers.py --bodyfile body localhost:$HGPORT "archive/tip.$4" -
  >     f --size --sha1 body
  >     killdaemons.py
  >     cat errors.log
  >     hg blackbox --config extensions.blackbox= --config blackbox.track=
  >     cp .hg/hgrc-base .hg/hgrc
  > }

check http return codes

  $ test_archtype gz tar.gz tar.bz2 zip
  % gz allowed should give 200
  200 Script output follows
  content-disposition: attachment; filename=test-archive-1701ef1f1510.tar.gz
  content-type: application/x-gzip
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=408, sha1=8fa06531bddecc365a9f5edb0f88b65974bfe505
  % tar.bz2 and zip disallowed should both give 403
  403 Archive type not allowed: bz2
  content-type: text/html; charset=ascii
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=1451, sha1=4c5cf0f574446c44feb7f88f4e0e2a56bd92c352
  403 Archive type not allowed: zip
  content-type: text/html; charset=ascii
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=1451, sha1=cbfa5574b337348bfd0564cc534474d002e7d6c7
  $ test_archtype bz2 tar.bz2 zip tar.gz
  % bz2 allowed should give 200
  200 Script output follows
  content-disposition: attachment; filename=test-archive-1701ef1f1510.tar.bz2
  content-type: application/x-bzip2
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=426, sha1=8d87f5aba6e14f1bfea6c232985982c278b2fb0b
  % zip and tar.gz disallowed should both give 403
  403 Archive type not allowed: zip
  content-type: text/html; charset=ascii
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=1451, sha1=cbfa5574b337348bfd0564cc534474d002e7d6c7
  403 Archive type not allowed: gz
  content-type: text/html; charset=ascii
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=1450, sha1=71f0b12d59f85fdcfe8ff493e2dc66863f2f7734
  $ test_archtype zip zip tar.gz tar.bz2
  % zip allowed should give 200
  200 Script output follows
  content-disposition: attachment; filename=test-archive-1701ef1f1510.zip
  content-type: application/zip
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=(1377|1461), sha1=(677b14d3d048778d5eb5552c14a67e6192068650|be6d3983aa13dfe930361b2569291cdedd02b537) (re)
  % tar.gz and tar.bz2 disallowed should both give 403
  403 Archive type not allowed: gz
  content-type: text/html; charset=ascii
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=1450, sha1=71f0b12d59f85fdcfe8ff493e2dc66863f2f7734
  403 Archive type not allowed: bz2
  content-type: text/html; charset=ascii
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=1451, sha1=4c5cf0f574446c44feb7f88f4e0e2a56bd92c352

check http return codes (with deprecated option)

  $ test_archtype_deprecated gz tar.gz tar.bz2 zip
  % gz allowed should give 200
  200 Script output follows
  content-disposition: attachment; filename=test-archive-1701ef1f1510.tar.gz
  content-type: application/x-gzip
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=408, sha1=8fa06531bddecc365a9f5edb0f88b65974bfe505
  % tar.bz2 and zip disallowed should both give 403
  403 Archive type not allowed: bz2
  content-type: text/html; charset=ascii
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=1451, sha1=4c5cf0f574446c44feb7f88f4e0e2a56bd92c352
  403 Archive type not allowed: zip
  content-type: text/html; charset=ascii
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=1451, sha1=cbfa5574b337348bfd0564cc534474d002e7d6c7
  $ test_archtype_deprecated bz2 tar.bz2 zip tar.gz
  % bz2 allowed should give 200
  200 Script output follows
  content-disposition: attachment; filename=test-archive-1701ef1f1510.tar.bz2
  content-type: application/x-bzip2
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=426, sha1=8d87f5aba6e14f1bfea6c232985982c278b2fb0b
  % zip and tar.gz disallowed should both give 403
  403 Archive type not allowed: zip
  content-type: text/html; charset=ascii
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=1451, sha1=cbfa5574b337348bfd0564cc534474d002e7d6c7
  403 Archive type not allowed: gz
  content-type: text/html; charset=ascii
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=1450, sha1=71f0b12d59f85fdcfe8ff493e2dc66863f2f7734
  $ test_archtype_deprecated zip zip tar.gz tar.bz2
  % zip allowed should give 200
  200 Script output follows
  content-disposition: attachment; filename=test-archive-1701ef1f1510.zip
  content-type: application/zip
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=(1377|1461), sha1=(677b14d3d048778d5eb5552c14a67e6192068650|be6d3983aa13dfe930361b2569291cdedd02b537) (re)
  % tar.gz and tar.bz2 disallowed should both give 403
  403 Archive type not allowed: gz
  content-type: text/html; charset=ascii
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=1450, sha1=71f0b12d59f85fdcfe8ff493e2dc66863f2f7734
  403 Archive type not allowed: bz2
  content-type: text/html; charset=ascii
  date: $HTTP_DATE$
  etag: W/"*" (glob)
  server: testing stub value
  transfer-encoding: chunked
  
  body: size=1451, sha1=4c5cf0f574446c44feb7f88f4e0e2a56bd92c352

  $ echo "allow-archive = gz bz2 zip" >> .hg/hgrc
  $ hg serve -p $HGPORT -d --pid-file=hg.pid -E errors.log
  $ cat hg.pid >> $DAEMON_PIDS

check archive links' order

  $ get-with-headers.py localhost:$HGPORT "?revcount=1" | grep '/archive/tip.'
  <a href="/archive/tip.zip">zip</a>
  <a href="/archive/tip.tar.gz">gz</a>
  <a href="/archive/tip.tar.bz2">bz2</a>

invalid arch type should give 404

  $ get-with-headers.py localhost:$HGPORT "archive/tip.invalid" | head -n 1
  404 Unsupported archive type: None

  $ TIP=`hg id -v | cut -f1 -d' '`
  $ QTIP=`hg id -q`
  $ cat > getarchive.py <<EOF
  > from __future__ import absolute_import
  > import os
  > import sys
  > from mercurial import (
  >     util,
  > )
  > try:
  >     # Set stdout to binary mode for win32 platforms
  >     import msvcrt
  >     msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
  > except ImportError:
  >     pass
  > if len(sys.argv) <= 3:
  >     node, archive = sys.argv[1:]
  >     requeststr = 'cmd=archive;node=%s;type=%s' % (node, archive)
  > else:
  >     node, archive, file = sys.argv[1:]
  >     requeststr = 'cmd=archive;node=%s;type=%s;file=%s' % (node, archive, file)
  > try:
  >     stdout = sys.stdout.buffer
  > except AttributeError:
  >     stdout = sys.stdout
  > try:
  >     f = util.urlreq.urlopen('http://$LOCALIP:%s/?%s'
  >                     % (os.environ['HGPORT'], requeststr))
  >     stdout.write(f.read())
  > except util.urlerr.httperror as e:
  >     sys.stderr.write(str(e) + '\n')
  > EOF
  $ "$PYTHON" getarchive.py "$TIP" gz | gunzip | tar tf - 2>/dev/null
  test-archive-1701ef1f1510/.hg_archival.txt
  test-archive-1701ef1f1510/.hgsub
  test-archive-1701ef1f1510/.hgsubstate
  test-archive-1701ef1f1510/bar
  test-archive-1701ef1f1510/baz/bletch
  test-archive-1701ef1f1510/foo
  test-archive-1701ef1f1510/subrepo/sub
  $ "$PYTHON" getarchive.py "$TIP" bz2 | bunzip2 | tar tf - 2>/dev/null
  test-archive-1701ef1f1510/.hg_archival.txt
  test-archive-1701ef1f1510/.hgsub
  test-archive-1701ef1f1510/.hgsubstate
  test-archive-1701ef1f1510/bar
  test-archive-1701ef1f1510/baz/bletch
  test-archive-1701ef1f1510/foo
  test-archive-1701ef1f1510/subrepo/sub
  $ "$PYTHON" getarchive.py "$TIP" zip > archive.zip
  $ unzip -t archive.zip
  Archive:  archive.zip
      testing: test-archive-1701ef1f1510/.hg_archival.txt*OK (glob)
      testing: test-archive-1701ef1f1510/.hgsub*OK (glob)
      testing: test-archive-1701ef1f1510/.hgsubstate*OK (glob)
      testing: test-archive-1701ef1f1510/bar*OK (glob)
      testing: test-archive-1701ef1f1510/baz/bletch*OK (glob)
      testing: test-archive-1701ef1f1510/foo*OK (glob)
      testing: test-archive-1701ef1f1510/subrepo/sub*OK (glob)
  No errors detected in compressed data of archive.zip.

test that we can download single directories and files

  $ "$PYTHON" getarchive.py "$TIP" gz baz | gunzip | tar tf - 2>/dev/null
  test-archive-1701ef1f1510/baz/bletch
  $ "$PYTHON" getarchive.py "$TIP" gz foo | gunzip | tar tf - 2>/dev/null
  test-archive-1701ef1f1510/foo

test that we detect file patterns that match no files

  $ "$PYTHON" getarchive.py "$TIP" gz foobar
  HTTP Error 404: file(s) not found: foobar

test that we reject unsafe patterns

  $ "$PYTHON" getarchive.py "$TIP" gz relre:baz
  HTTP Error 404: file(s) not found: relre:baz

  $ killdaemons.py

  $ hg archive -t tar test.tar
  $ tar tf test.tar
  test/.hg_archival.txt
  test/.hgsub
  test/.hgsubstate
  test/bar
  test/baz/bletch
  test/foo

  $ hg archive --debug -t tbz2 -X baz test.tar.bz2 --config progress.debug=true
  archiving: 0/4 files (0.00%)
  archiving: .hgsub 1/4 files (25.00%)
  archiving: .hgsubstate 2/4 files (50.00%)
  archiving: bar 3/4 files (75.00%)
  archiving: foo 4/4 files (100.00%)
  $ bunzip2 -dc test.tar.bz2 | tar tf - 2>/dev/null
  test/.hg_archival.txt
  test/.hgsub
  test/.hgsubstate
  test/bar
  test/foo

  $ hg archive -t tgz -p %b-%h test-%h.tar.gz
  $ gzip -dc test-$QTIP.tar.gz | tar tf - 2>/dev/null
  test-1701ef1f1510/.hg_archival.txt
  test-1701ef1f1510/.hgsub
  test-1701ef1f1510/.hgsubstate
  test-1701ef1f1510/bar
  test-1701ef1f1510/baz/bletch
  test-1701ef1f1510/foo

  $ hg archive autodetected_test.tar
  $ tar tf autodetected_test.tar
  autodetected_test/.hg_archival.txt
  autodetected_test/.hgsub
  autodetected_test/.hgsubstate
  autodetected_test/bar
  autodetected_test/baz/bletch
  autodetected_test/foo

The '-t' should override autodetection

  $ hg archive -t tar autodetect_override_test.zip
  $ tar tf autodetect_override_test.zip
  autodetect_override_test.zip/.hg_archival.txt
  autodetect_override_test.zip/.hgsub
  autodetect_override_test.zip/.hgsubstate
  autodetect_override_test.zip/bar
  autodetect_override_test.zip/baz/bletch
  autodetect_override_test.zip/foo

  $ for ext in tar tar.gz tgz tar.bz2 tbz2 zip; do
  >     hg archive auto_test.$ext
  >     if [ -d auto_test.$ext ]; then
  >         echo "extension $ext was not autodetected."
  >     fi
  > done

  $ cat > md5comp.py <<EOF
  > from __future__ import absolute_import, print_function
  > import hashlib
  > import sys
  > f1, f2 = sys.argv[1:3]
  > h1 = hashlib.md5(open(f1, 'rb').read()).hexdigest()
  > h2 = hashlib.md5(open(f2, 'rb').read()).hexdigest()
  > print(h1 == h2 or "md5 differ: " + repr((h1, h2)))
  > EOF

archive name is stored in the archive, so create similar archives and
rename them afterwards.

  $ hg archive -t tgz tip.tar.gz
  $ mv tip.tar.gz tip1.tar.gz
  $ sleep 1
  $ hg archive -t tgz tip.tar.gz
  $ mv tip.tar.gz tip2.tar.gz
  $ "$PYTHON" md5comp.py tip1.tar.gz tip2.tar.gz
  True

  $ hg archive -t zip -p /illegal test.zip
  abort: archive prefix contains illegal components
  [255]
  $ hg archive -t zip -p very/../bad test.zip

  $ hg archive --config ui.archivemeta=false -t zip -r 2 test.zip
  $ unzip -t test.zip
  Archive:  test.zip
      testing: test/bar*OK (glob)
      testing: test/baz/bletch*OK (glob)
      testing: test/foo*OK (glob)
  No errors detected in compressed data of test.zip.

  $ hg archive -t tar - | tar tf - 2>/dev/null
  test-1701ef1f1510/.hg_archival.txt
  test-1701ef1f1510/.hgsub
  test-1701ef1f1510/.hgsubstate
  test-1701ef1f1510/bar
  test-1701ef1f1510/baz/bletch
  test-1701ef1f1510/foo

  $ hg archive -r 0 -t tar rev-%r.tar
  $ [ -f rev-0.tar ]

test .hg_archival.txt

  $ hg archive ../test-tags
  $ cat ../test-tags/.hg_archival.txt
  repo: daa7f7c60e0a224faa4ff77ca41b2760562af264
  node: 1701ef1f151069b8747038e93b5186bb43a47504
  branch: default
  latesttag: null
  latesttagdistance: 4
  changessincelatesttag: 4
  $ hg tag -r 2 mytag
  $ hg tag -r 2 anothertag
  $ hg archive -r 2 ../test-lasttag
  $ cat ../test-lasttag/.hg_archival.txt
  repo: daa7f7c60e0a224faa4ff77ca41b2760562af264
  node: 2c0277f05ed49d1c8328fb9ba92fba7a5ebcb33e
  branch: default
  tag: anothertag
  tag: mytag

  $ hg archive -t bogus test.bogus
  abort: unknown archive type 'bogus'
  [255]

enable progress extension:

  $ cp $HGRCPATH $HGRCPATH.no-progress
  $ cat >> $HGRCPATH <<EOF
  > [progress]
  > assume-tty = 1
  > format = topic bar number
  > delay = 0
  > refresh = 0
  > width = 60
  > EOF

  $ hg archive ../with-progress
  \r (no-eol) (esc)
  archiving [                                           ] 0/6\r (no-eol) (esc)
  archiving [======>                                    ] 1/6\r (no-eol) (esc)
  archiving [=============>                             ] 2/6\r (no-eol) (esc)
  archiving [====================>                      ] 3/6\r (no-eol) (esc)
  archiving [===========================>               ] 4/6\r (no-eol) (esc)
  archiving [==================================>        ] 5/6\r (no-eol) (esc)
  archiving [==========================================>] 6/6\r (no-eol) (esc)
                                                              \r (no-eol) (esc)

cleanup after progress extension test:

  $ cp $HGRCPATH.no-progress $HGRCPATH

server errors

  $ cat errors.log

empty repo

  $ hg init ../empty
  $ cd ../empty
  $ hg archive ../test-empty
  abort: no working directory: please specify a revision
  [255]

old file -- date clamped to 1980

  $ touch -t 197501010000 old
  $ hg add old
  $ hg commit -m old
  $ hg archive ../old.zip
  $ unzip -l ../old.zip | grep -v -- ----- | egrep -v files$
  Archive:  ../old.zip
  \s*Length.* (re)
  *172*80*00:00*old/.hg_archival.txt (glob)
  *0*80*00:00*old/old (glob)

show an error when a provided pattern matches no files

  $ hg archive -I file_that_does_not_exist.foo ../empty.zip
  abort: no files match the archive pattern
  [255]

  $ hg archive -X * ../empty.zip
  abort: no files match the archive pattern
  [255]

  $ cd ..

issue3600: check whether "hg archive" can create archive files which
are extracted with expected timestamp, even though TZ is not
configured as GMT.

  $ mkdir issue3600
  $ cd issue3600

  $ hg init repo
  $ echo a > repo/a
  $ hg -R repo add repo/a
  $ hg -R repo commit -m '#0' -d '456789012 21600'
  $ cat > show_mtime.py <<EOF
  > from __future__ import absolute_import, print_function
  > import os
  > import sys
  > print(int(os.stat(sys.argv[1]).st_mtime))
  > EOF

  $ hg -R repo archive --prefix tar-extracted archive.tar
  $ (TZ=UTC-3; export TZ; tar xf archive.tar)
  $ "$PYTHON" show_mtime.py tar-extracted/a
  456789012

  $ hg -R repo archive --prefix zip-extracted archive.zip
  $ (TZ=UTC-3; export TZ; unzip -q archive.zip)
  $ "$PYTHON" show_mtime.py zip-extracted/a
  456789012

  $ cd ..