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DifferentialHunk.php
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Mon, Dec 23, 03:53

DifferentialHunk.php
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<?php
abstract class DifferentialHunk extends DifferentialDAO
implements PhabricatorPolicyInterface {
protected $changesetID;
protected $oldOffset;
protected $oldLen;
protected $newOffset;
protected $newLen;
private $changeset;
private $splitLines;
private $structuredLines;
private $structuredFiles = array();
const FLAG_LINES_ADDED = 1;
const FLAG_LINES_REMOVED = 2;
const FLAG_LINES_STABLE = 4;
public function getAddedLines() {
return $this->makeContent($include = '+');
}
public function getRemovedLines() {
return $this->makeContent($include = '-');
}
public function makeNewFile() {
return implode('', $this->makeContent($include = ' +'));
}
public function makeOldFile() {
return implode('', $this->makeContent($include = ' -'));
}
public function makeChanges() {
return implode('', $this->makeContent($include = '-+'));
}
public function getStructuredOldFile() {
return $this->getStructuredFile('-');
}
public function getStructuredNewFile() {
return $this->getStructuredFile('+');
}
private function getStructuredFile($kind) {
if ($kind !== '+' && $kind !== '-') {
throw new Exception(
pht(
'Structured file kind should be "+" or "-", got "%s".',
$kind));
}
if (!isset($this->structuredFiles[$kind])) {
if ($kind == '+') {
$number = $this->newOffset;
} else {
$number = $this->oldOffset;
}
$lines = $this->getStructuredLines();
// NOTE: We keep the "\ No newline at end of file" line if it appears
// after a line which is not excluded. For example, if we're constructing
// the "+" side of the diff, we want to ignore this one since it's
// relevant only to the "-" side of the diff:
//
// - x
// \ No newline at end of file
// + x
//
// ...but we want to keep this one:
//
// - x
// + x
// \ No newline at end of file
$file = array();
$keep = true;
foreach ($lines as $line) {
switch ($line['type']) {
case ' ':
case $kind:
$file[$number++] = $line;
$keep = true;
break;
case '\\':
if ($keep) {
// Strip the actual newline off the line's text.
$text = $file[$number - 1]['text'];
$text = rtrim($text, "\r\n");
$file[$number - 1]['text'] = $text;
$file[$number++] = $line;
$keep = false;
}
break;
default:
$keep = false;
break;
}
}
$this->structuredFiles[$kind] = $file;
}
return $this->structuredFiles[$kind];
}
public function getSplitLines() {
if ($this->splitLines === null) {
$this->splitLines = phutil_split_lines($this->getChanges());
}
return $this->splitLines;
}
public function getStructuredLines() {
if ($this->structuredLines === null) {
$lines = $this->getSplitLines();
$structured = array();
foreach ($lines as $line) {
if (empty($line[0])) {
// TODO: Can we just get rid of this?
continue;
}
$structured[] = array(
'type' => $line[0],
'text' => substr($line, 1),
);
}
$this->structuredLines = $structured;
}
return $this->structuredLines;
}
public function getContentWithMask($mask) {
$include = array();
if (($mask & self::FLAG_LINES_ADDED)) {
$include[] = '+';
}
if (($mask & self::FLAG_LINES_REMOVED)) {
$include[] = '-';
}
if (($mask & self::FLAG_LINES_STABLE)) {
$include[] = ' ';
}
$include = implode('', $include);
return implode('', $this->makeContent($include));
}
final private function makeContent($include) {
$lines = $this->getSplitLines();
$results = array();
$include_map = array();
for ($ii = 0; $ii < strlen($include); $ii++) {
$include_map[$include[$ii]] = true;
}
if (isset($include_map['+'])) {
$n = $this->newOffset;
} else {
$n = $this->oldOffset;
}
$use_next_newline = false;
foreach ($lines as $line) {
if (!isset($line[0])) {
continue;
}
if ($line[0] == '\\') {
if ($use_next_newline) {
$results[last_key($results)] = rtrim(end($results), "\n");
}
} else if (empty($include_map[$line[0]])) {
$use_next_newline = false;
} else {
$use_next_newline = true;
$results[$n] = substr($line, 1);
}
if ($line[0] == ' ' || isset($include_map[$line[0]])) {
$n++;
}
}
return $results;
}
public function getChangeset() {
return $this->assertAttached($this->changeset);
}
public function attachChangeset(DifferentialChangeset $changeset) {
$this->changeset = $changeset;
return $this;
}
/* -( PhabricatorPolicyInterface )----------------------------------------- */
public function getCapabilities() {
return array(
PhabricatorPolicyCapability::CAN_VIEW,
);
}
public function getPolicy($capability) {
return $this->getChangeset()->getPolicy($capability);
}
public function hasAutomaticCapability($capability, PhabricatorUser $viewer) {
return $this->getChangeset()->hasAutomaticCapability($capability, $viewer);
}
}

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