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PhabricatorRemarkupRuleImageMacro.php
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Created
Wed, Sep 4, 23:14
Size
2 KB
Mime Type
text/x-php
Expires
Fri, Sep 6, 23:14 (2 d)
Engine
blob
Format
Raw Data
Handle
20502800
Attached To
rPH Phabricator
PhabricatorRemarkupRuleImageMacro.php
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<?php
/*
* Copyright 2011 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.
*/
/**
* @group markup
*/
class
PhabricatorRemarkupRuleImageMacro
extends
PhutilRemarkupRule
{
const
RANDOM_IMAGE_NAME
=
'randomon'
;
private
$images
=
array
();
private
$hash
=
0
;
public
function
__construct
()
{
$rows
=
id
(
new
PhabricatorFileImageMacro
())->
loadAll
();
foreach
(
$rows
as
$row
)
{
$this
->
images
[
$row
->
getName
()]
=
$row
->
getFilePHID
();
}
$this
->
images
[
self
::
RANDOM_IMAGE_NAME
]
=
''
;
}
public
function
apply
(
$text
)
{
$this
->
hash
=
0
;
return
preg_replace_callback
(
'@
\b
([a-zA-Z0-9_
\-
]+)
\b
@U'
,
array
(
$this
,
'markupImageMacro'
),
$text
);
}
/**
* Silly function for generating some 'randomness' based on the
* words in the text
*/
private
function
updateHash
(
$word
)
{
// Simple Jenkins hash
for
(
$ii
=
0
;
$ii
<
strlen
(
$word
);
$ii
++)
{
$this
->
hash
+=
ord
(
$word
[
$ii
]);
$this
->
hash
+=
(
$this
->
hash
<<
10
);
$this
->
hash
^=
(
$this
->
hash
>>
6
);
}
}
public
function
markupImageMacro
(
$matches
)
{
// Update the hash that is used for defining each 'randomon' image. This way
// each 'randomon' image will be different, but they won't change when the
// text is updated.
$this
->
updateHash
(
$matches
[
1
]);
if
(
array_key_exists
(
$matches
[
1
],
$this
->
images
))
{
if
(
$matches
[
1
]
===
self
::
RANDOM_IMAGE_NAME
)
{
$keys
=
array_keys
(
$this
->
images
);
$phid
=
$this
->
images
[
$keys
[
$this
->
hash
%
count
(
$this
->
images
)]];
}
else
{
$phid
=
$this
->
images
[
$matches
[
1
]];
}
$img
=
phutil_render_tag
(
'img'
,
array
(
'src'
=>
PhabricatorFileURI
::
getViewURIForPHID
(
$phid
),
'alt'
=>
$matches
[
1
],
'title'
=>
$matches
[
1
]),
null
);
return
$this
->
getEngine
()->
storeText
(
$img
);
}
else
{
return
$matches
[
1
];
}
}
}
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