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viewutils.php
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Sat, Apr 12, 18:07

viewutils.php
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<?php
function phutil_date_format($epoch) {
$now = time();
$shift = 30 * 24 * 60 * 60;
if ($epoch < $now + $shift && $epoch > $now - $shift) {
$format = pht('D, M j');
} else {
$format = pht('M j Y');
}
return $format;
}
function phutil_format_relative_time($duration) {
return phutil_format_units_generic(
$duration,
array(60, 60, 24, 7),
array('s', 'm', 'h', 'd', 'w'),
$precision = 0);
}
/**
* Format a relative time (duration) into weeks, days, hours, minutes,
* seconds, but unlike phabricator_format_relative_time, does so for more than
* just the largest unit.
*
* @param int Duration in seconds.
* @param int Levels to render - will render the three highest levels, ie:
* 5 h, 37 m, 1 s
* @return string Human-readable description.
*/
function phutil_format_relative_time_detailed($duration, $levels = 2) {
if ($duration == 0) {
return 'now';
}
$levels = max(1, min($levels, 5));
$remainder = 0;
$is_negative = false;
if ($duration < 0) {
$is_negative = true;
$duration = abs($duration);
}
$this_level = 1;
$detailed_relative_time = phutil_format_units_generic(
$duration,
array(60, 60, 24, 7),
array('s', 'm', 'h', 'd', 'w'),
$precision = 0,
$remainder);
$duration = $remainder;
while ($remainder > 0 && $this_level < $levels) {
$detailed_relative_time .= ', '.phutil_format_units_generic(
$duration,
array(60, 60, 24, 7),
array('s', 'm', 'h', 'd', 'w'),
$precision = 0,
$remainder);
$duration = $remainder;
$this_level++;
}
if ($is_negative) {
$detailed_relative_time .= ' ago';
}
return $detailed_relative_time;
}
/**
* Format a byte count for human consumption, e.g. "10MB" instead of
* "10485760".
*
* @param int Number of bytes.
* @return string Human-readable description.
*/
function phutil_format_bytes($bytes) {
return phutil_format_units_generic(
$bytes,
array(1024, 1024, 1024, 1024, 1024),
array('B', 'KB', 'MB', 'GB', 'TB', 'PB'),
$precision = 0);
}
/**
* Parse a human-readable byte description (like "6MB") into an integer.
*
* @param string Human-readable description.
* @return int Number of represented bytes.
*/
function phutil_parse_bytes($input) {
$bytes = trim($input);
if (!strlen($bytes)) {
return null;
}
// NOTE: Assumes US-centric numeral notation.
$bytes = preg_replace('/[ ,]/', '', $bytes);
$matches = null;
if (!preg_match('/^(?:\d+(?:[.]\d+)?)([kmgtp]?)b?$/i', $bytes, $matches)) {
throw new Exception(pht("Unable to parse byte size '%s'!", $input));
}
$scale = array(
'k' => 1024,
'm' => 1024 * 1024,
'g' => 1024 * 1024 * 1024,
't' => 1024 * 1024 * 1024 * 1024,
'p' => 1024 * 1024 * 1024 * 1024 * 1024,
);
$bytes = (float)$bytes;
if ($matches[1]) {
$bytes *= $scale[strtolower($matches[1])];
}
return (int)$bytes;
}
function phutil_format_units_generic(
$n,
array $scales,
array $labels,
$precision = 0,
&$remainder = null) {
$is_negative = false;
if ($n < 0) {
$is_negative = true;
$n = abs($n);
}
$remainder = 0;
$accum = 1;
$scale = array_shift($scales);
$label = array_shift($labels);
while ($n >= $scale && count($labels)) {
$remainder += ($n % $scale) * $accum;
$n /= $scale;
$accum *= $scale;
$label = array_shift($labels);
if (!count($scales)) {
break;
}
$scale = array_shift($scales);
}
if ($is_negative) {
$n = -$n;
$remainder = -$remainder;
}
if ($precision) {
$num_string = number_format($n, $precision);
} else {
$num_string = (int)floor($n);
}
if ($label) {
$num_string .= ' '.$label;
}
return $num_string;
}

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