phabricator: add a `phabimport` command

I've had `alias.phabimport = $hg phabread --stack $1 | $hg import --bypass -`
for a while now, and I suspect others do too.  That's limited though, in that it
can't use the information on Phabricator to restore it in the original location,
so I'm making it a first class command.

This doesn't do anything ambitious like that- this is mostly a simplification of
`hg import` to get the equivalent of the alias mentioned above.  The `--bypass`
option is hardcoded to be enabled and the message about amending rejects
dropped (rejects aren't created with `--bypass`), because editing patches on
Phabricator seems like an unusual workflow.

This will need other options, like `--obsolete` and `--secret`.  I think these
would be more useful as config settings, as I imagine the workflows are pretty
fixed depending on roles.  Reviewers who don't queue patches probably never want
`--obsolete`, but may need `--secret`.  Reviewers who do will want the former,
but not the latter.  I left `--stack` as an option, but that should probably be
a config knob too (or at least default to on)- if the point of this is to avoid
rejects, it doesn't make sense to skip dependencies in most cases.

Evolve is going to need a fix to its wrapping of `cmdutil.tryimportone()`, as it
currently assumes `opts` has an `obsolete` key.  It's worked around for now.

Differential Revision: https://phab.mercurial-scm.org/D8136

tests/phabricator/phabimport-stack.json

@@ -0,0 +1,277 b''
+{
+    "version": 1, 
+    "interactions": [
+        {
+            "request": {
+                "body": "__conduit__=1&output=json&params=%7B%22__conduit__%22%3A+%7B%22token%22%3A+%22cli-hahayouwish%22%7D%2C+%22ids%22%3A+%5B7906%2C+7907%2C+7908%2C+7909%2C+7910%2C+7911%2C+7912%2C+7913%2C+7914%2C+7915%2C+7916%2C+7917%2C+7918%5D%7D", 
+                "uri": "https://phab.mercurial-scm.org//api/differential.query", 
+                "headers": {
+                    "content-length": [
+                        "242"
+                    ], 
+                    "host": [
+                        "phab.mercurial-scm.org"
+                    ], 
+                    "accept": [
+                        "application/mercurial-0.1"
+                    ], 
+                    "user-agent": [
+                        "mercurial/proto-1.0 (Mercurial 5.3+205-75107f1aa427+20200215)"
+                    ], 
+                    "content-type": [
+                        "application/x-www-form-urlencoded"
+                    ]
+                }, 
+                "method": "POST"
+            }, 
+            "response": {
+                "status": {
+                    "message": "OK", 
+                    "code": 200
+                }, 
+                "headers": {
+                    "expires": [
+                        "Sat, 01 Jan 2000 00:00:00 GMT"
+                    ], 
+                    "transfer-encoding": [
+                        "chunked"
+                    ], 
+                    "x-content-type-options": [
+                        "nosniff"
+                    ], 
+                    "x-frame-options": [
+                        "Deny"
+                    ], 
+                    "cache-control": [
+                        "no-store"
+                    ], 
+                    "content-type": [
+                        "application/json"
+                    ], 
+                    "server": [
+                        "Apache/2.4.10 (Debian)"
+                    ], 
+                    "strict-transport-security": [
+                        "max-age=0; includeSubdomains; preload"
+                    ], 
+                    "date": [
+                        "Sun, 16 Feb 2020 20:45:32 GMT"
+                    ], 
+                    "referrer-policy": [
+                        "no-referrer"
+                    ], 
+                    "x-xss-protection": [
+                        "1; mode=block"
+                    ]
+                }, 
+                "body": {
+                    "string": "{\"result\":[{\"id\":\"7914\",\"phid\":\"PHID-DREV-u3iz5rww54i5jrsksnr3\",\"title\":\"rust-matchers: implement `visit_children_set` for `FileMatcher`\",\"uri\":\"https:\\/\\/phab.mercurial-scm.org\\/D7914\",\"dateCreated\":\"1579212591\",\"dateModified\":\"1581399130\",\"authorPHID\":\"PHID-USER-7hh4j4mpuwlnzvkapvse\",\"status\":\"3\",\"statusName\":\"Closed\",\"properties\":{\"draft.broadcast\":true,\"lines.added\":147,\"lines.removed\":5,\"wasAcceptedBeforeClose\":false},\"branch\":null,\"summary\":\"As per the removed inline comment, this will become useful in a future patch\\nin this series as the `IncludeMatcher` is introduced.\",\"testPlan\":\"\",\"lineCount\":\"152\",\"activeDiffPHID\":\"PHID-DIFF-n6cmaq4iwcetzbkkjvje\",\"diffs\":[\"20146\",\"19388\",\"19387\"],\"commits\":[\"PHID-CMIT-zdugtywectjyslokpg45\"],\"reviewers\":{\"PHID-PROJ-3dvcxzznrjru2xmmses3\":\"PHID-PROJ-3dvcxzznrjru2xmmses3\"},\"ccs\":[\"PHID-USER-rskbts6c2kyknc66vlzt\",\"PHID-USER-cgcdlc6c3gpxapbmkwa2\",\"PHID-USER-nqkdtlvq7nwcejrriivx\",\"PHID-USER-q42dn7cc3donqriafhjx\"],\"hashes\":[[\"hgcm\",\"\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\"]],\"auxiliary\":{\"phabricator:projects\":[],\"phabricator:depends-on\":[\"PHID-DREV-lii2vixihcpnnjss3bzp\"]},\"repositoryPHID\":\"PHID-REPO-bvunnehri4u2isyr7bc3\"},{\"id\":\"7907\",\"phid\":\"PHID-DREV-jjmiq6h4ychdtvqh3aqu\",\"title\":\"rebase: always be graft-like, not merge-like, also for merges\",\"uri\":\"https:\\/\\/phab.mercurial-scm.org\\/D7907\",\"dateCreated\":\"1579162215\",\"dateModified\":\"1581387772\",\"authorPHID\":\"PHID-USER-rskbts6c2kyknc66vlzt\",\"status\":\"3\",\"statusName\":\"Closed\",\"properties\":{\"draft.broadcast\":true,\"lines.added\":37,\"lines.removed\":96,\"wasAcceptedBeforeClose\":false},\"branch\":null,\"summary\":\"Rebase works by updating to a commit and then grafting changes on\\ntop. However, before this patch, it would actually merge in changes\\ninstead of grafting them in in some cases. That is, it would use the\\ncommon ancestor as base instead of using one of the parents. That\\nseems wrong to me, so I'm changing it so `defineparents()` always\\nreturns a value for `base`.\\n\\nThis fixes the bad behavior in test-rebase-newancestor.t, which was\\nintroduced in 65f215ea3e8e (tests: add test for rebasing merges with\\nancestors of the rebase destination, 2014-11-30).\\n\\nThe difference in test-rebase-dest.t is because the files in the tip\\nrevision were A, D, E, F before this patch and A, D, F, G after it. I\\nthink both files should ideally be there.\",\"testPlan\":\"\",\"lineCount\":\"133\",\"activeDiffPHID\":\"PHID-DIFF-xo54almrs3aipnwsjrju\",\"diffs\":[\"20131\",\"20093\",\"19858\",\"19699\",\"19377\",\"19343\"],\"commits\":[\"PHID-CMIT-bflrckeubx66y5jb3h2w\"],\"reviewers\":{\"PHID-PROJ-3dvcxzznrjru2xmmses3\":\"PHID-PROJ-3dvcxzznrjru2xmmses3\"},\"ccs\":[\"PHID-USER-q42dn7cc3donqriafhjx\"],\"hashes\":[[\"hgcm\",\"\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\"]],\"auxiliary\":{\"phabricator:projects\":[],\"phabricator:depends-on\":[\"PHID-DREV-wyjh3r4pzmjaex6k5qtv\"]},\"repositoryPHID\":\"PHID-REPO-bvunnehri4u2isyr7bc3\"},{\"id\":\"7910\",\"phid\":\"PHID-DREV-lii2vixihcpnnjss3bzp\",\"title\":\"rust-re2: add wrapper for calling Re2 from Rust\",\"uri\":\"https:\\/\\/phab.mercurial-scm.org\\/D7910\",\"dateCreated\":\"1579182899\",\"dateModified\":\"1581379671\",\"authorPHID\":\"PHID-USER-7hh4j4mpuwlnzvkapvse\",\"status\":\"3\",\"statusName\":\"Closed\",\"properties\":{\"draft.broadcast\":true,\"lines.added\":195,\"lines.removed\":5,\"wasAcceptedBeforeClose\":false},\"branch\":null,\"summary\":\"This assumes that Re2 is installed following Google's guide. I am not sure\\nhow we want to integrate it in the project, but I think a follow-up patch would\\nbe more appropriate for such work.\\nAs it stands, *not* having Re2 installed results in a compilation error, which\\nis a problem as it breaks install compatibility. Hence, this is gated behind\\na non-default `with-re2` compilation feature.\",\"testPlan\":\"\",\"lineCount\":\"200\",\"activeDiffPHID\":\"PHID-DIFF-hvxi3tvelg75fjugmca5\",\"diffs\":[\"20080\",\"20040\",\"19938\",\"19546\",\"19399\",\"19386\",\"19360\"],\"commits\":[\"PHID-CMIT-5tq5dqzc7uvuanxqr7ze\",\"PHID-CMIT-visqfpftvyutaadm73vj\"],\"reviewers\":{\"PHID-PROJ-3dvcxzznrjru2xmmses3\":\"PHID-PROJ-3dvcxzznrjru2xmmses3\",\"PHID-USER-nqkdtlvq7nwcejrriivx\":\"PHID-USER-nqkdtlvq7nwcejrriivx\"},\"ccs\":[\"PHID-USER-cgcdlc6c3gpxapbmkwa2\",\"PHID-USER-nqkdtlvq7nwcejrriivx\",\"PHID-USER-2lpsl6btnf4lltwv7drt\",\"PHID-USER-q42dn7cc3donqriafhjx\"],\"hashes\":[[\"hgcm\",\"\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\"]],\"auxiliary\":{\"phabricator:projects\":[],\"phabricator:depends-on\":[\"PHID-DREV-xkbqk6xlntkrgqn4x62c\"]},\"repositoryPHID\":\"PHID-REPO-bvunnehri4u2isyr7bc3\"},{\"id\":\"7909\",\"phid\":\"PHID-DREV-xkbqk6xlntkrgqn4x62c\",\"title\":\"rust-filepatterns: 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On my compiler,\\nthis causes a warning to be emitted:\\n\\n```\\nmercurial\\/cext\\/manifest.c: In function 'pathlen':\\nmercurial\\/cext\\/manifest.c:48:44: warning: operand of ?: changes signedness from 'Py_ssize_t' {aka 'long int'} to 'long unsigned int' due to unsignedness of other operand [-Wsign-compare]\\n  return (end) ? 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+            }
+        }, 
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+            "request": {
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+                "uri": "https://phab.mercurial-scm.org//api/differential.querydiffs", 
+                "headers": {
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+                    ]
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+                    "message": "OK", 
+                    "code": 200
+                }, 
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+                    "expires": [
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+                    ], 
+                    "transfer-encoding": [
+                        "chunked"
+                    ], 
+                    "x-content-type-options": [
+                        "nosniff"
+                    ], 
+                    "x-frame-options": [
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+                    ], 
+                    "cache-control": [
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+                    ], 
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+                        "application/json"
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+                    ], 
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+                    "referrer-policy": [
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+                    ], 
+                    "x-xss-protection": [
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+                }
+            }
+        }, 
+        {
+            "request": {
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+                "uri": "https://phab.mercurial-scm.org//api/differential.getrawdiff", 
+                "headers": {
+                    "content-length": [
+                        "144"
+                    ], 
+                    "host": [
+                        "phab.mercurial-scm.org"
+                    ], 
+                    "accept": [
+                        "application/mercurial-0.1"
+                    ], 
+                    "user-agent": [
+                        "mercurial/proto-1.0 (Mercurial 5.3+205-75107f1aa427+20200215)"
+                    ], 
+                    "content-type": [
+                        "application/x-www-form-urlencoded"
+                    ]
+                }, 
+                "method": "POST"
+            }, 
+            "response": {
+                "status": {
+                    "message": "OK", 
+                    "code": 200
+                }, 
+                "headers": {
+                    "expires": [
+                        "Sat, 01 Jan 2000 00:00:00 GMT"
+                    ], 
+                    "transfer-encoding": [
+                        "chunked"
+                    ], 
+                    "x-content-type-options": [
+                        "nosniff"
+                    ], 
+                    "x-frame-options": [
+                        "Deny"
+                    ], 
+                    "cache-control": [
+                        "no-store"
+                    ], 
+                    "content-type": [
+                        "application/json"
+                    ], 
+                    "server": [
+                        "Apache/2.4.10 (Debian)"
+                    ], 
+                    "strict-transport-security": [
+                        "max-age=0; includeSubdomains; preload"
+                    ], 
+                    "date": [
+                        "Sun, 16 Feb 2020 20:45:33 GMT"
+                    ], 
+                    "referrer-policy": [
+                        "no-referrer"
+                    ], 
+                    "x-xss-protection": [
+                        "1; mode=block"
+                    ]
+                }, 
+                "body": {
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+                }
+            }
+        }, 
+        {
+            "request": {
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+                "uri": "https://phab.mercurial-scm.org//api/differential.getrawdiff", 
+                "headers": {
+                    "content-length": [
+                        "144"
+                    ], 
+                    "host": [
+                        "phab.mercurial-scm.org"
+                    ], 
+                    "accept": [
+                        "application/mercurial-0.1"
+                    ], 
+                    "user-agent": [
+                        "mercurial/proto-1.0 (Mercurial 5.3+205-75107f1aa427+20200215)"
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+                        "application/x-www-form-urlencoded"
+                    ]
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+                "method": "POST"
+            }, 
+            "response": {
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+                    "message": "OK", 
+                    "code": 200
+                }, 
+                "headers": {
+                    "expires": [
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+                    ], 
+                    "transfer-encoding": [
+                        "chunked"
+                    ], 
+                    "x-content-type-options": [
+                        "nosniff"
+                    ], 
+                    "x-frame-options": [
+                        "Deny"
+                    ], 
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+                        "no-store"
+                    ], 
+                    "content-type": [
+                        "application/json"
+                    ], 
+                    "server": [
+                        "Apache/2.4.10 (Debian)"
+                    ], 
+                    "strict-transport-security": [
+                        "max-age=0; includeSubdomains; preload"
+                    ], 
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+                        "Sun, 16 Feb 2020 20:45:34 GMT"
+                    ], 
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+                        "no-referrer"
+                    ], 
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+                        "1; mode=block"
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+                }
+            }
+        }
+    ]
+}
  No newline at end of file

hgext/phabricator.py

@@ -1703,6 +1703,65 b' def phabread(ui, repo, spec, **opts):'
 
 
 @vcrcommand(
+    b'phabimport',
+    [(b'', b'stack', False, _(b'import dependencies as well'))],
+    _(b'DREVSPEC [OPTIONS]'),
+    helpcategory=command.CATEGORY_IMPORT_EXPORT,
+)
+def phabimport(ui, repo, spec, **opts):
+    """import patches from Phabricator for the specified Differential Revisions
+
+    The patches are read and applied starting at the parent of the working
+    directory.
+
+    See ``hg help phabread`` for how to specify DREVSPEC.
+    """
+    opts = pycompat.byteskwargs(opts)
+
+    # --bypass avoids losing exec and symlink bits when importing on Windows,
+    # and allows importing with a dirty wdir.  It also aborts instead of leaving
+    # rejects.
+    opts[b'bypass'] = True
+
+    # Mandatory default values, synced with commands.import
+    opts[b'strip'] = 1
+    opts[b'prefix'] = b''
+    # Evolve 9.3.0 assumes this key is present in cmdutil.tryimportone()
+    opts[b'obsolete'] = False
+
+    def _write(patches):
+        parents = repo[None].parents()
+
+        with repo.wlock(), repo.lock(), repo.transaction(b'phabimport'):
+            for drev, contents in patches:
+                ui.status(_(b'applying patch from D%s\n') % drev)
+
+                with patch.extract(ui, pycompat.bytesio(contents)) as patchdata:
+                    msg, node, rej = cmdutil.tryimportone(
+                        ui,
+                        repo,
+                        patchdata,
+                        parents,
+                        opts,
+                        [],
+                        None,  # Never update wdir to another revision
+                    )
+
+                    if not node:
+                        raise error.Abort(_(b'D%s: no diffs found') % drev)
+
+                    ui.note(msg + b'\n')
+                    parents = [repo[node]]
+
+    opts = pycompat.byteskwargs(opts)
+    if opts.get(b'stack'):
+        spec = b':(%s)' % spec
+    drevs = querydrev(repo.ui, spec)
+
+    readpatch(repo.ui, drevs, _write)
+
+
+@vcrcommand(
     b'phabupdate',
     [
         (b'', b'accept', False, _(b'accept revisions')),

tests/test-phabricator.t

@@ -323,4 +323,27 b" But it doesn't override local config"
   $TESTTMP/repo/.hg/hgrc:*: phabricator.callsign=local (glob)
   $ mv .hg/hgrc.bak .hg/hgrc
 
+Phabimport works with a stack
+
   $ cd ..
+  $ hg clone repo repo2 -qr 1
+  $ cp repo/.hg/hgrc repo2/.hg/
+  $ cd repo2
+  $ hg phabimport --stack 'D7918' --test-vcr "$VCR/phabimport-stack.json"
+  applying patch from D7917
+  applying patch from D7918
+  $ hg log -G -Tcompact
+  o  3[tip]   aaef04066140   1970-01-01 00:00 +0000   test
+  |    create draft change for phabricator testing
+  |
+  o  2   8de3712202d1   1970-01-01 00:00 +0000   test
+  |    create public change for phabricator testing
+  |
+  @  1   a692622e6937   1970-01-01 00:00 +0000   test
+  |    create beta for phabricator test
+  |
+  o  0   c44b38f24a45   1970-01-01 00:00 +0000   test
+       create alpha for phabricator test \x80 (esc)
+  
+
+  $ cd ..