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DifferentialChangeset.php
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Sun, May 25, 16:39

DifferentialChangeset.php
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<?php
/*
* Copyright 2012 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
final class DifferentialChangeset extends DifferentialDAO {
protected $diffID;
protected $oldFile;
protected $filename;
protected $awayPaths;
protected $changeType;
protected $fileType;
protected $metadata;
protected $oldProperties;
protected $newProperties;
protected $addLines;
protected $delLines;
private $unsavedHunks = array();
private $hunks;
const TABLE_CACHE = 'differential_changeset_parse_cache';
protected function getConfiguration() {
return array(
self::CONFIG_SERIALIZATION => array(
'metadata' => self::SERIALIZATION_JSON,
'oldProperties' => self::SERIALIZATION_JSON,
'newProperties' => self::SERIALIZATION_JSON,
'awayPaths' => self::SERIALIZATION_JSON,
)) + parent::getConfiguration();
}
public function getAffectedLineCount() {
return $this->getAddLines() + $this->getDelLines();
}
public function attachHunks(array $hunks) {
assert_instances_of($hunks, 'DifferentialHunk');
$this->hunks = $hunks;
return $this;
}
public function getHunks() {
if ($this->hunks === null) {
throw new Exception("Must load and attach hunks first!");
}
return $this->hunks;
}
public function getDisplayFilename() {
$name = $this->getFilename();
if ($this->getFileType() == DifferentialChangeType::FILE_DIRECTORY) {
$name .= '/';
}
return $name;
}
public function addUnsavedHunk(DifferentialHunk $hunk) {
if ($this->hunks === null) {
$this->hunks = array();
}
$this->hunks[] = $hunk;
$this->unsavedHunks[] = $hunk;
return $this;
}
public function loadHunks() {
if (!$this->getID()) {
return array();
}
return id(new DifferentialHunk())->loadAllWhere(
'changesetID = %d',
$this->getID());
}
public function save() {
$this->openTransaction();
$ret = parent::save();
foreach ($this->unsavedHunks as $hunk) {
$hunk->setChangesetID($this->getID());
$hunk->save();
}
$this->saveTransaction();
return $ret;
}
public function delete() {
$this->openTransaction();
foreach ($this->loadHunks() as $hunk) {
$hunk->delete();
}
$this->_hunks = array();
queryfx(
$this->establishConnection('w'),
'DELETE FROM %T WHERE id = %d',
self::TABLE_CACHE,
$this->getID());
$ret = parent::delete();
$this->saveTransaction();
return $ret;
}
public function getSortKey() {
$sort_key = $this->getFilename();
// Sort files with ".h" in them first, so headers (.h, .hpp) come before
// implementations (.c, .cpp, .cs).
$sort_key = str_replace('.h', '.!h', $sort_key);
return $sort_key;
}
public function makeNewFile() {
$file = mpull($this->getHunks(), 'makeNewFile');
return implode('', $file);
}
public function makeOldFile() {
$file = mpull($this->getHunks(), 'makeOldFile');
return implode('', $file);
}
public function computeOffsets() {
$offsets = array();
$n = 1;
foreach ($this->getHunks() as $hunk) {
for ($i = 0; $i < $hunk->getNewLen(); $i++) {
$offsets[$n] = $hunk->getNewOffset() + $i;
$n++;
}
}
return $offsets;
}
public function makeChangesWithContext($num_lines = 3) {
$with_context = array();
foreach ($this->getHunks() as $hunk) {
$context = array();
$changes = explode("\n", $hunk->getChanges());
foreach ($changes as $l => $line) {
if ($line[0] == '+' || $line[0] == '-') {
$context += array_fill($l - $num_lines, 2 * $num_lines + 1, true);
}
}
$with_context[] = array_intersect_key($changes, $context);
}
return array_mergev($with_context);
}
public function getAnchorName() {
return substr(md5($this->getFilename()), 0, 8);
}
public function getAbsoluteRepositoryPath(
PhabricatorRepository $repository = null,
DifferentialDiff $diff = null) {
$base = '/';
if ($diff && $diff->getSourceControlPath()) {
$base = id(new PhutilURI($diff->getSourceControlPath()))->getPath();
}
$path = $this->getFilename();
$path = rtrim($base, '/').'/'.ltrim($path, '/');
$svn = PhabricatorRepositoryType::REPOSITORY_TYPE_SVN;
if ($repository && $repository->getVersionControlSystem() == $svn) {
$prefix = $repository->getDetail('remote-uri');
$prefix = id(new PhutilURI($prefix))->getPath();
if (!strncmp($path, $prefix, strlen($prefix))) {
$path = substr($path, strlen($prefix));
}
$path = '/'.ltrim($path, '/');
}
return $path;
}
/**
* Retreive the configured wordwrap width for this changeset.
*/
public function getWordWrapWidth() {
$config = PhabricatorEnv::getEnvConfig('differential.wordwrap');
foreach ($config as $regexp => $width) {
if (preg_match($regexp, $this->getFilename())) {
return $width;
}
}
return 80;
}
public function getWhitespaceMatters() {
$config = PhabricatorEnv::getEnvConfig('differential.whitespace-matters');
foreach ($config as $regexp) {
if (preg_match($regexp, $this->getFilename())) {
return true;
}
}
return false;
}
public function makeContextDiff($inline, $add_context) {
$context = array();
$debug = False;
if ($debug) {
$context[] = 'Inline: '.$inline->getIsNewFile().' '.
$inline->getLineNumber().' '.$inline->getLineLength();
foreach ($this->getHunks() as $hunk) {
$context[] = 'hunk: '.$hunk->getOldOffset().'-'.
$hunk->getOldLen().'; '.$hunk->getNewOffset().'-'.$hunk->getNewLen();
$context[] = $hunk->getChanges();
}
}
if ($inline->getIsNewFile()) {
$prefix = '+';
} else {
$prefix = '-';
}
foreach ($this->getHunks() as $hunk) {
if ($inline->getIsNewFile()) {
$offset = $hunk->getNewOffset();
$length = $hunk->getNewLen();
} else {
$offset = $hunk->getOldOffset();
$length = $hunk->getOldLen();
}
$start = $inline->getLineNumber() - $offset;
$end = $start + $inline->getLineLength();
// We need to go in if $start == $length, because the last line
// might be a "\No newline at end of file" marker, which we want
// to show if the additional context is > 0.
if ($start <= $length && $end >= 0) {
$start = $start - $add_context;
$end = $end + $add_context;
$hunk_content = array();
$hunk_pos = array( "-" => 0, "+" => 0 );
$hunk_offset = array( "-" => NULL, "+" => NULL );
$hunk_last = array( "-" => NULL, "+" => NULL );
foreach (explode("\n", $hunk->getChanges()) as $line) {
$inCommon = strncmp($line, " ", 1) === 0;
$inOld = strncmp($line, "-", 1) === 0 || $inCommon;
$inNew = strncmp($line, "+", 1) === 0 || $inCommon;
$inSelected = strncmp($line, $prefix, 1) === 0;
$skip = !$inSelected && !$inCommon;
if ($hunk_pos[$prefix] <= $end) {
if ($start <= $hunk_pos[$prefix]) {
if (!$skip || ($hunk_pos[$prefix] != $start &&
$hunk_pos[$prefix] != $end)) {
if ($inOld) {
if ($hunk_offset["-"] === NULL)
$hunk_offset["-"] = $hunk_pos["-"];
$hunk_last["-"] = $hunk_pos["-"];
}
if ($inNew) {
if ($hunk_offset["+"] === NULL)
$hunk_offset["+"] = $hunk_pos["+"];
$hunk_last["+"] = $hunk_pos["+"];
}
$hunk_content[] = $line;
}
}
if ($inOld) ++$hunk_pos["-"];
if ($inNew) ++$hunk_pos["+"];
}
}
if ($hunk_offset["-"] !== NULL || $hunk_offset["+"] !== NULL) {
$header = "@@";
if ($hunk_offset["-"] !== NULL) {
$header .= " -" . ($hunk->getOldOffset() + $hunk_offset["-"]) .
"," . ($hunk_last["-"]-$hunk_offset["-"]+1);
}
if ($hunk_offset["+"] !== NULL) {
$header .= " +" . ($hunk->getNewOffset() + $hunk_offset["+"]) .
"," . ($hunk_last["+"]-$hunk_offset["+"]+1);
}
$header .= " @@";
$context[] = $header;
$context[] = implode("\n", $hunk_content);
}
}
}
return implode("\n", $context);
}
}

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