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option to skip overwriting value if it is set #12

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Merged
merged 1 commit into from
Apr 28, 2018
Merged

option to skip overwriting value if it is set #12

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8 changes: 8 additions & 0 deletions src/JsonPointer.php
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,11 @@ class JsonPointer
*/
const STRICT_MODE = 2;

/**
* Skip action if holder already has a non-null value at path
*/
const SKIP_IF_ISSET = 4;

/**
* @param string $key
* @param bool $isURIFragmentId
Expand Down Expand Up @@ -143,6 +148,9 @@ public static function add(&$holder, $pathItems, $value, $flags = self::RECURSIV
}
}
}
if ($ref !== null && $flags & self::SKIP_IF_ISSET) {
return;
}
$ref = $value;
}

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9 changes: 9 additions & 0 deletions tests/src/JsonPointerTest.php
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Expand Up @@ -17,6 +17,15 @@ public function testProcess()
JsonPointer::add($json, ['l1','l2','l3'], 'hello!');
$this->assertSame('{"l1":{"l2":{"l3":"hello!"}}}', json_encode($json));

JsonPointer::add($json, ['l1', 'l2', 'l3'], 'hello again!', JsonPointer::SKIP_IF_ISSET);
$this->assertSame('{"l1":{"l2":{"l3":"hello!"}}}', json_encode($json));

JsonPointer::add($json, ['l1', 'l2', 'l3'], 'hello again!');
$this->assertSame('{"l1":{"l2":{"l3":"hello again!"}}}', json_encode($json));

JsonPointer::add($json, ['l1', 'l2', 'l3'], 'hello!');
$this->assertSame('{"l1":{"l2":{"l3":"hello!"}}}', json_encode($json));

$this->assertSame('{"l3":"hello!"}', json_encode(JsonPointer::get($json, JsonPointer::splitPath('/l1/l2'))));

try {
Expand Down