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Code Issues Releases Wiki Activity

Move Paste line range reading code into AphrontRequest

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Summary: Ref T13088. This lifts the code for parsing "$x-y" line ranges in URIs into AphrontRequest so Diffusion, Paste, Harbormaster, etc., can share it.

Test Plan: Viewed lines, line ranges, no lines, negative line ranges, line ranges with 0, and extremely long line ranges in Paste.

Maniphest Tasks: T13088

Differential Revision: https://secure.phabricator.com/D19162
This commit is contained in:
epriestley 2018-03-01 06:09:51 -08:00
parent 94d340fcff
commit 4466402c5a
2 changed files with 56 additions and 21 deletions
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48
src/aphront/AphrontRequest.php
View file

@ -49,6 +49,54 @@ final class AphrontRequest extends Phobject {
return idx($this->uriData, $key, $default);
}
/**
* Read line range parameter data from the request.
*
* Applications like Paste, Diffusion, and Harbormaster use "$12-14" in the
* URI to allow users to link to particular lines.
*
* @param string URI data key to pull line range information from.
* @param int|null Maximum length of the range.
* @return null|pair<int, int> Null, or beginning and end of the range.
*/
public function getURILineRange($key, $limit) {
$range = $this->getURIData($key);
if (!strlen($range)) {
return null;
}
$range = explode('-', $range, 2);
foreach ($range as $key => $value) {
$value = (int)$value;
if (!$value) {
// If either value is "0", discard the range.
return null;
}
$range[$key] = $value;
}
// If the range is like "$10", treat it like "$10-10".
if (count($range) == 1) {
$range[] = head($range);
}
// If the range is "$7-5", treat it like "$5-7".
if ($range[1] < $range[0]) {
$range = array_reverse($range);
}
// If the user specified something like "$1-999999999" and we have a limit,
// clamp it to a more reasonable range.
if ($limit !== null) {
if ($range[1] - $range[0] > $limit) {
$range[1] = $range[0] + $limit;
}
}
return $range;
}
public function setApplicationConfiguration(
$application_configuration) {
$this->applicationConfiguration = $application_configuration;

29
src/applications/paste/controller/PhabricatorPasteViewController.php
View file

@ -2,30 +2,10 @@
final class PhabricatorPasteViewController extends PhabricatorPasteController {
private $highlightMap;
public function shouldAllowPublic() {
return true;
}
public function willProcessRequest(array $data) {
$raw_lines = idx($data, 'lines');
$map = array();
if ($raw_lines) {
$lines = explode('-', $raw_lines);
$first = idx($lines, 0, 0);
$last = idx($lines, 1);
if ($last) {
$min = min($first, $last);
$max = max($first, $last);
$map = array_fuse(range($min, $max));
} else {
$map[$first] = $first;
}
}
$this->highlightMap = $map;
}
public function handleRequest(AphrontRequest $request) {
$viewer = $request->getViewer();
$id = $request->getURIData('id');
@ -40,11 +20,18 @@ final class PhabricatorPasteViewController extends PhabricatorPasteController {
return new Aphront404Response();
}
$lines = $request->getURILineRange('lines', 1000);
if ($lines) {
$map = range($lines[0], $lines[1]);
} else {
$map = array();
}
$header = $this->buildHeaderView($paste);
$curtain = $this->buildCurtain($paste);
$subheader = $this->buildSubheaderView($paste);
$source_code = $this->buildSourceCodeView($paste, $this->highlightMap);
$source_code = $this->buildSourceCodeView($paste, $map);
require_celerity_resource('paste-css');