Extension:CommonsMetadata/hi
CommonsMetadata प्रकाशन की स्थिति: स्थिर |
|
---|---|
कार्यान्वयन | API |
विवरण | Attempts at extracting metadata from commons pages |
लेखक | Brian Wolff (bawolffवार्ता) |
संगतता नीति | मीडियाविकि के साथ प्रकाशित स्नैपशॉट्स। Master में पीछे की तरफ से संगतता नहीं है। |
MediaWiki | 1.25 |
PHP | 5.4 |
डेटाबेस बदलता है | नहीं |
लाइसेंस | GNU साधारण सार्वजनिक लाइसेंस 2.0 या अधिक |
डाउनलोड करें | |
|
|
Quarterly downloads | 66 (Ranked 74th) |
Public wikis using | 1,055 (Ranked 247th) |
CommonsMetadata एक्सटेंशन को अनुवादित करें अगर यह translatewiki.net पर उपलब्ध है | |
मुद्दे | अधूरे कार्य · बग की रिपोर्ट करें |
The CommonsMetadata extension is an attempt at extracting metadata from Wikimedia Commons pages but is also available at all other Wikimedia projects. It adds some extra information to the imageinfo API, based on templates and categories in the image description. It is used by several extensions/tools (such as Extension:MultimediaViewer , Extension:VisualEditor , Extension:MobileFrontend , Mobile-Content-Service (MCS)) to provide better lightboxes or image selection dialogs.
The extension in its current form is intended to be a temporary solution, eventually replaced by Wikidata on Commons.
Installation
- फ़ाइलों को डाउनलोड करें और अपने
extensions/
फ़ोल्डर केCommonsMetadata
नामक डिरेक्ट्री में डालें।
Developers and code contributors should install the extension from Git instead, using:cd extensions/
git clone https://gerrit.wikimedia.org/r/mediawiki/extensions/CommonsMetadata - अपने LocalSettings.php फ़ाइल के अंत में निम्न कोड जोड़ें:
wfLoadExtension( 'CommonsMetadata' );
- पूर्ण – अपने विकि पर Special:Version पर जाकर देखें कि एक्सटेंशन को सफलतापूर्वक स्थापित किया गया है कि नहीं।
Motivation & design choices
The assumptions of this extension are the following.
- At some point in the future, Wikidata will take over handling metadata at Commons. To avoid disruptive changes, which will soon need to be changed again, the extension should work with common metadata as it currently is (so not introducing new parser functions). Hence, screen scraping.
- The content of many of the fields on a commons description page includes rich formatting (In particular: Links, italics, bold. In some cases, more complex things like embedded images)
- As a result, the extension outputs parsed html (wikitext sucks, plain text doesn't capture the data)
- Furthermore, the data tends to be formatted for human display rather than (for example) machine-formatted dates. When the date field says something like "circa 1600s", it's hard to convert that to a precise date (many examples can be).
- To carry that forward, also apply formatting to EXIF metadata, which is controlled on the wiki (For example, commons links the camera name to a Wikipedia article)
- If we can't extract info from the description page, but the file has the author tagged in EXIF/XMP/iptc metadata, we should use that as a fallback.
- Ideally, such a system would be as commons-specific as possible, with the commons and non-commons parts separated.
- Commons description pages have multilingual descriptions. Lots of users probably want one language.
- This implementation applies per language conventions to dates and things. Additionally, for explicitly multi-lingual fields (description), there is an option to return all or just a single language. Even in single language mode, some things are still language-specific (like the thousands separator on numbers)
Configuration
parameter | default | description |
---|---|---|
$wgCommonsMetadataSetTrackingCategories
|
false
|
Add the following tracking categories to file pages when the corresponding information is not provided either via templates on the file page of (for some of these) EXIF metadata:
|
$wgCommonsMetadataPublicDomainPageUrl
|
https://commons.wikimedia.org/wiki/Help:Public_domain
|
Link used for 'license' attribute in schema.org markup for files in the public domain. |
$wgCommonsMetadataForceRecalculate
|
false
|
Force calculation of metadata even when the image is from a foreign repository that would provide it. This is meant for local development. |
परीक्षण
When testing with remote images (e.g. Commons images if you have enabled $wgUseInstantCommons
), you can set $wgCommonsMetadataForceRecalculate = true;
to force CommonsMetadata to parse the description page of the image and extract the metadata (normally, if the remote repository had CommonsMetadata installed as well, it would just copy the API output from there).
उपयोग
Use the imageinfo API, and include extmetadata
as an image info property specified via iiprop
.
उदाहरण उपयोग:
View this example in the API sandbox:
Returned data
The extension currently provides the following items in the extmetadata
field of the response (the field names were chosen, where possible, to follow the IPTC-IIM format used in EXIF headers):
Data based on machine-readable data in the Information template:
- ImageDescription - image description
- Artist - author name (might contain complex HTML, multiple authors, etc)
- Credit - source
- DateTimeOriginal - time of creation (space-separated ISO 8601 timestamp whenever possible, but can be any other textual description of a date, possibly with HTML mixed in)
- ObjectName - title (for a book/painting; otherwise just the file name)
- Permission - contents of the Permission field of the template. It can be a lot of things (license template, OTRS ID, details on how to attribute...)
- AuthorCount - the number of templates with authors (e.g., Book, Photograph...). The number of actual authors might be higher if a template describes multiple authors in a single string.
Data based on machine-readable data in the Location template:
- GPSLatitude - latitude
- GPSLongitude - longitude
- GPSMapDatum - coordinate type (only
WGS-84
supported for now)
Data based on machine-readable data in the license template:
- LicenseShortName - short human-readable license name
- LicenseUrl
- UsageTerms
- Copyrighted -
True
orFalse
(for public domain images)
For multi-licensed images, these values are currently unreliable.
- Attribution - custom attribution that should replace Artist Credit (can also originate from the Information template)
- AttributionRequired - booleanish (phab:T86726), tells whether there is a legal requirement to attribute
- NonFree - booleanish, true means the image is not under a free license. (Used for non-Commons images only.)
Other data:
- CommonsMedadataExtension - contains the metadata parser version number; mostly for internal use
- License - a best guess at the license of the image (mostly for internal use by MediaViewer, might change; LicenseShortName is probably more reliable)
- Categories - a
|
-separated list of the categories of the image.
Based on parsing category names, probably won't work for images not hosted on Commons.
- Restrictions - reuse restrictions such as trademarks or personality rights; an array of keywords (the class names from this table, without the
restriction-
prefix). See also the restrict-* icons in MediaViewer. - DeletionReason - if set, the template is being considered for deletion.
(Based on the nuke template, probably not reliable outside Commons.) It contains a deletion reason, but it is phrased to be applicable for a log entry, so it might be misleading (e.g. past tense when actually it is not yet decided whether the image will be deleted).
See also
- Manual:File metadata handling
- Extension:MultimediaViewer - currently the main user of the information provided by CommonsMetadata.
- Request for comment on handling image information
- Template detection on local wikis with locally uploaded files – Describes how to prepare the templates for fetching metadata and thus displaying them when using the MultimediaViewer extension.
इस एक्सटेंशन का इस्तेमाल एक या अधिक विकिमीडिया परियोजनाओं पर किया जा रहा है। इसका शायद मतलब है कि एक्सटेंशन स्थिर है और इस तरह के अधिक दर्शकों वाले वेबसाइटों द्वारा उपयोग किए जाने के लिए पर्याप्त रूप से काम करता है। विकिमीडिया की CommonSettings.php और InitialiseSettings.php कॉन्फ़िगरेशन फ़ाइलों में इस एक्सटेंशन का नाम खोजें, और यह वहीं स्थापित होगा। किसी विशिष्ट विकि पर स्थापित एक्सटेंशन्स की पूरी सूची को विकि के Special:Version पृष्ठ पर देखा जा सकता है। |
इस एक्सटेंशन को निम्न विकि फ़ार्म्स/होस्ट्स और/या पैकेजिस में शामिल किया गया है: यह कोई आधिकारिक सूची नहीं है। कुछ विकि फ़ॉर्म्स/होस्ट्स और/या पैकेजिस में यह एक्सटेंशन शामिल हो सकता है हालाँकि वो शायद यहाँ सूचीबद्ध न हों। सुनिश्चित करने के लिए हमेशा अपने विकि फ़ार्म/होस्ट से संपर्क करें या बंडल जाँचें। |
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