47 lines
1.4 KiB
Kotlin
47 lines
1.4 KiB
Kotlin
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package exh.metadata
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/**
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* Metadata utils
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*/
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fun humanReadableByteCount(bytes: Long, si: Boolean): String {
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val unit = if (si) 1000 else 1024
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if (bytes < unit) return bytes.toString() + " B"
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val exp = (Math.log(bytes.toDouble()) / Math.log(unit.toDouble())).toInt()
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val pre = (if (si) "kMGTPE" else "KMGTPE")[exp - 1] + if (si) "" else "i"
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return String.format("%.1f %sB", bytes / Math.pow(unit.toDouble(), exp.toDouble()), pre)
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}
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private val KB_FACTOR: Long = 1000
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private val KIB_FACTOR: Long = 1024
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private val MB_FACTOR = 1000 * KB_FACTOR
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private val MIB_FACTOR = 1024 * KIB_FACTOR
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private val GB_FACTOR = 1000 * MB_FACTOR
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private val GIB_FACTOR = 1024 * MIB_FACTOR
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fun parseHumanReadableByteCount(arg0: String): Double? {
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val spaceNdx = arg0.indexOf(" ")
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val ret = java.lang.Double.parseDouble(arg0.substring(0, spaceNdx))
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when (arg0.substring(spaceNdx + 1)) {
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"GB" -> return ret * GB_FACTOR
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"GiB" -> return ret * GIB_FACTOR
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"MB" -> return ret * MB_FACTOR
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"MiB" -> return ret * MIB_FACTOR
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"KB" -> return ret * KB_FACTOR
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"KiB" -> return ret * KIB_FACTOR
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}
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return null
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}
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fun String?.nullIfBlank(): String? = if(isNullOrBlank())
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null
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else
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this
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fun <T> ignore(expr: () -> T): T? {
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return try { expr() } catch (t: Throwable) { null }
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}
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fun <K,V> Set<Map.Entry<K,V>>.forEach(action: (K, V) -> Unit) {
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forEach { action(it.key, it.value) }
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}
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