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https://we.phorge.it/source/arcanist.git
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Update ArcanistMercurialAPI to support getting the current commit ref
Summary: Mercurial does not have an implementation for querying commit symbol hardpoints, which is what the "arc amend" workflow uses. This provides an implementation for Mercurial as well as updating `ArcanistMercurialAPI` to specify the current working directory symbol as `.`. Additionally removed an erroneous early return in `ArcanistAmendWorkflow` which prevents a check against uncommitted changes. Fixes T13665 Test Plan: 1. I created a diff on a Mercurial revision. 2. I updated the revisions summary in phabricator. 3. I ran `arc amend` and it successfully amended the local commit with the updated commit message. 4. I modified a file in the repository and left the change uncommitted. 5. I ran `arc amend` and verified that it reported an error due to uncommited commits. I ran the following commands to verify that they resolved to the correct commits 1. `arc inspect --explore -- 'commit(674492bb460)'` properly matched the right commit as a commit hash prefix 2. `arc inspect --explore -- 'commit(674492bb4606666d5321feb38d2a467a8733c786)'` properly matched the right commit as a full commit hash 3. `arc inspect --explore -- 'commit(master)'` properly matched the right commit as a bookmark 4. `arc inspect --explore -- 'commit(tip)'` properly matched the right commit as a tag 5. `arc inspect --explore -- 'commit(.)'` properly matched the right commit as the working directory 6. `arc inspect --explore -- 'commit(cafe)'` properly matched the right commit as a commit hash prefix 7. I created a 'cafe' bookmark on a changeset 8. `arc inspect --explore -- 'commit(cafe)'` properly matched the right commit as a bookmark 9. `arc inspect --explore -- 'commit(67449)'` properly matched the right commit as a revision number 10. `arc inspect --explore -- 'commit(2147483648)'` properly did not match any revision (no python exception) 11. `arc inspect --explore -- 'commit(0)'` properly matched the first commit Reviewers: #blessed_reviewers, epriestley Reviewed By: #blessed_reviewers, epriestley Subscribers: Korvin, epriestley Maniphest Tasks: T13665 Differential Revision: https://secure.phabricator.com/D21716
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parent
cd17e84412
commit
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4 changed files with 210 additions and 2 deletions
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@ -346,6 +346,7 @@ phutil_register_library_map(array(
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'ArcanistMercurialAPI' => 'repository/api/ArcanistMercurialAPI.php',
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'ArcanistMercurialCommitGraphQuery' => 'repository/graph/query/ArcanistMercurialCommitGraphQuery.php',
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'ArcanistMercurialCommitMessageHardpointQuery' => 'query/ArcanistMercurialCommitMessageHardpointQuery.php',
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'ArcanistMercurialCommitSymbolCommitHardpointQuery' => 'ref/commit/ArcanistMercurialCommitSymbolCommitHardpointQuery.php',
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'ArcanistMercurialLandEngine' => 'land/engine/ArcanistMercurialLandEngine.php',
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'ArcanistMercurialLocalState' => 'repository/state/ArcanistMercurialLocalState.php',
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'ArcanistMercurialParser' => 'repository/parser/ArcanistMercurialParser.php',
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@ -1404,6 +1405,7 @@ phutil_register_library_map(array(
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'ArcanistMercurialAPI' => 'ArcanistRepositoryAPI',
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'ArcanistMercurialCommitGraphQuery' => 'ArcanistCommitGraphQuery',
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'ArcanistMercurialCommitMessageHardpointQuery' => 'ArcanistWorkflowMercurialHardpointQuery',
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'ArcanistMercurialCommitSymbolCommitHardpointQuery' => 'ArcanistWorkflowMercurialHardpointQuery',
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'ArcanistMercurialLandEngine' => 'ArcanistLandEngine',
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'ArcanistMercurialLocalState' => 'ArcanistRepositoryLocalState',
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'ArcanistMercurialParser' => 'Phobject',
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@ -0,0 +1,204 @@
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<?php
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final class ArcanistMercurialCommitSymbolCommitHardpointQuery
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extends ArcanistWorkflowMercurialHardpointQuery {
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public function getHardpoints() {
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return array(
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ArcanistCommitSymbolRef::HARDPOINT_OBJECT,
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);
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}
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protected function canLoadRef(ArcanistRef $ref) {
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return ($ref instanceof ArcanistCommitSymbolRef);
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}
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public function loadHardpoint(array $refs, $hardpoint) {
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$symbol_map = array();
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foreach ($refs as $key => $ref) {
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$symbol_map[$key] = $ref->getSymbol();
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}
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$symbol_set = array_fuse($symbol_map);
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foreach ($symbol_set as $symbol) {
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$this->validateSymbol($symbol);
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}
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$api = $this->getRepositoryAPI();
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// Using "hg log" with repeated "--rev arguments will have the following
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// behaviors which need accounted for:
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// 1. If any one revision is invalid then the entire command will fail. To
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// work around this the revset uses a trick where specifying a pattern
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// for the bookmark() or tag() predicates instead of a literal won't
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// result in failure if the pattern isn't found.
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// 2. Multiple markers that resolve to the same node will only be included
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// once in the output. Because of this the order of output can't be
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// relied upon to match up with the requested symbol. To work around
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// this, the template used must also output any associated symbols to
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// match back to. Because of this there is no reasonable way to resolve
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// symbols with Mercurial-supported modifiers such as 'symbol^'.
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// 3. The working directory can't be identified directly, instead a special
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// template conditional is used to include 'CWD' as the second item in
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// the output if the node is also the working directory, or 'NOTCWD'
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// otherwise. This needs included before the tags/bookmarks in order to
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// distinguish it from some repository using that same name for a tag or
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// bookmark.
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$pattern = array();
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$arguments = array();
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$pattern[] = 'log';
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$pattern[] = '--template %s';
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$arguments[] = "{rev}\1".
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"{node}\1".
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"{ifcontains(rev, revset('parents()'), 'CWD', 'NOTCWD')}\1".
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"{tags % '{tag}\2'}{bookmarks % '{bookmark}\2'}\3";
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foreach ($symbol_set as $symbol) {
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// This is the one symbol that wouldn't be a bookmark or tag
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if ($symbol === '.') {
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$pattern[] = '--rev .';
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continue;
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}
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$predicates = array();
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if (ctype_xdigit($symbol)) {
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// Commit hashes are 40 characters
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if (strlen($symbol) <= 40) {
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$predicates[] = hgsprintf('id("%s")', $symbol);
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}
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}
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if (ctype_digit($symbol)) {
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// This is 2^32-1 which is (typically) the maximum size of an int in
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// Python -- passing anything higher than this to rev() will result
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// in a Python exception.
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if ($symbol <= 2147483647) {
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$predicates[] = hgsprintf('rev("%s")', $symbol);
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}
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} else {
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// Mercurial disallows using numbers as marker names.
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$re_symbol = preg_quote($symbol);
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$predicates[] = hgsprintf('bookmark("re:^%s$")', $re_symbol);
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$predicates[] = hgsprintf('tag("re:^%s$")', $re_symbol);
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}
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$pattern[] = '--rev %s';
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$arguments[] = implode(' or ', $predicates);
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}
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$pattern = implode(' ', $pattern);
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array_unshift($arguments, $pattern);
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$future = call_user_func_array(
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array($api, 'newFuture'),
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$arguments);
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list($stdout) = (yield $this->yieldFuture($future));
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$lines = explode("\3", $stdout);
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$hash_map = array();
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$node_list = array();
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foreach ($lines as $line) {
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$parts = explode("\1", $line, 4);
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if (empty(array_filter($parts))) {
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continue;
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} else if (count($parts) === 3) {
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list($rev, $node, $cwd) = $parts;
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$markers = array();
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} else if (count($parts) === 4) {
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list($rev, $node, $cwd, $markers) = $parts;
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$markers = array_filter(explode("\2", $markers));
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} else {
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throw new Exception(
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pht('Execution of "hg log" emitted an unexpected line ("%s").',
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$line));
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}
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$node_list[] = $node;
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if (in_array($rev, $symbol_set)) {
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if (!isset($hash_map[$rev])) {
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$hash_map[$rev] = $node;
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} else if ($hash_map[$rev] !== $node) {
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$hash_map[$rev] = '';
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}
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}
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foreach ($markers as $marker) {
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if (!isset($hash_map[$marker])) {
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$hash_map[$marker] = $node;
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} else if ($hash_map[$marker] !== $node) {
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$hash_map[$marker] = '';
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}
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}
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// The log template will mark the working directory node with 'CWD' which
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// we insert for the special marker '.' for the working directory, used
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// by ArcanistMercurialAPI::newCurrentCommitSymbol().
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if ($cwd === 'CWD') {
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if (!isset($hash_map['.'])) {
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$hash_map['.'] = $node;
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} else if ($hash_map['.'] !== $node) {
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$hash_map['.'] = '';
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}
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}
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}
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// Changeset hashes can be prefixes but also collide with other markers.
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// Consider 'cafe' which could be a bookmark or also a changeset hash
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// prefix. Mercurial will always allow markers to take precedence over
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// changeset hashes when resolving, so only populate symbols that match
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// hashes after all other entries are populated, to avoid the hash taing
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// a spot which a marker might match.
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foreach ($node_list as $node) {
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foreach ($symbol_set as $symbol) {
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if (str_starts_with($node, $symbol)) {
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if (!isset($hash_map[$symbol])) {
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$hash_map[$symbol] = $node;
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}
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}
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}
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}
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// Remove entries resulting in collisions, which set empty string values
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$hash_map = array_filter($hash_map);
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$results = array();
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foreach ($symbol_map as $key => $symbol) {
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if (isset($hash_map[$symbol])) {
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$results[$key] = $hash_map[$symbol];
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}
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}
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foreach ($results as $key => $result) {
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if ($result === null) {
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continue;
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}
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$ref = id(new ArcanistCommitRef())
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->setCommitHash($result);
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$results[$key] = $ref;
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}
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yield $this->yieldMap($results);
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}
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private function validateSymbol($symbol) {
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if (strpos($symbol, "\n") !== false) {
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throw new Exception(
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pht(
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'Commit symbol "%s" contains a newline. This is not a valid '.
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'character in a Mercurial commit symbol.',
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addcslashes($symbol, "\\\n")));
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}
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}
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}
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@ -454,6 +454,10 @@ final class ArcanistMercurialAPI extends ArcanistRepositoryAPI {
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}
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}
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protected function newCurrentCommitSymbol() {
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return $this->getWorkingCopyRevision();
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}
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public function getWorkingCopyRevision() {
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return '.';
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}
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@ -164,8 +164,6 @@ EOTEXT
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->execute();
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}
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return;
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if ($api->getUncommittedChanges()) {
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// TODO: Make this class of error show the uncommitted changes.
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