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util.js
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util.js
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const { formatTimeAndDate } = require( 'mediawiki.DateFormatter' );
const util = {
/**
* Get the message for the given block flag
*
* @param {string} flag
* @return {string}
*/
getBlockFlagMessage( flag ) {
// Potential messages:
// * block-log-flags-anononly
// * block-log-flags-nocreate
// * block-log-flags-noautoblock
// * block-log-flags-noemail
// * block-log-flags-nousertalk
// * block-log-flags-angry-autoblock
// * block-log-flags-hiddenname
return mw.message( 'block-log-flags-' + flag ).text();
},
/**
* Format a timestamp
*
* @param {string} timestamp
* @return {string}
*/
formatTimestamp( timestamp ) {
if ( !timestamp || mw.util.isInfinity( timestamp ) ) {
return mw.msg( 'infiniteblock' );
}
return formatTimeAndDate( new Date( timestamp ) );
},
/**
* Get the message for a given block action
*
* @param {string} action
* @return {string}
*/
getBlockActionMessage( action ) {
// Potential messages:
// * log-action-filter-block-block
// * log-action-filter-block-reblock
// * log-action-filter-block-unblock
return mw.message( 'log-action-filter-block-' + action ).text();
},
/**
* Gets rid of unneeded numbers in quad-dotted/octet IP strings
* For example, 127.111.113.151/24 -> 127.111.113.0/24
*
* Convert IPv6 to uppercase.
*
* Similar to \Wikimedia\IPUtils::sanitizeRange()
*
* @param {string} range
* @return {string}
*/
sanitizeRange( range ) {
let [ prefix, prefixBits ] = range.split( '/', 2 );
if ( prefixBits === undefined ) {
// Not a range
return mw.util.sanitizeIP( range );
}
prefixBits = parseInt( prefixBits, 10 );
let sep, numWords, radix, bitsPerWord;
if ( mw.util.isIPv4Address( range, true ) ) {
sep = '.';
numWords = 4;
radix = 10;
bitsPerWord = 8;
} else if ( mw.util.isIPv6Address( range, true ) ) {
sep = ':';
numWords = 8;
radix = 16;
bitsPerWord = 16;
// Expand IPv6 abbreviations
prefix = mw.util.sanitizeIP( prefix );
if ( prefix === null ) {
// Probably unreachable since we already validated it
return range;
}
} else {
// Invalid, pass through
return range;
}
const res = [];
const words = prefix.split( sep );
for ( let i = 0, bitPos = 0; i < numWords; i++, bitPos += bitsPerWord ) {
if ( bitPos + bitsPerWord <= prefixBits ) {
// Initial unchanged word
res.push( words[ i ] );
} else if ( bitPos >= prefixBits ) {
// Trailing zero word
res.push( '0' );
} else {
// Partially cut off word: use reciprocal bit shifts to zero out
// the part that's not in the prefix
const shift = bitPos + bitsPerWord - prefixBits;
/* eslint-disable no-bitwise */
res.push( ( parseInt( words[ i ], radix ) >> shift << shift ).toString( radix ) );
}
}
return res.join( sep ).toUpperCase() + '/' + prefixBits;
}
};
module.exports = util;

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