Replace shortNumber() with formatNumber() (#3519)
formatNumber() was existing code to show numbers with suffixes like K, M, etc, so re-use that code and delete shortNumber(). Update the tests to (a) test formatNumber(), and (b) be parameterised.
This commit is contained in:
parent
dd1020e48a
commit
071e00774e
5 changed files with 78 additions and 78 deletions
|
@ -397,7 +397,7 @@ public abstract class StatusBaseViewHolder extends RecyclerView.ViewHolder {
|
|||
if (replyCountLabel == null) return;
|
||||
|
||||
if (fullStats) {
|
||||
replyCountLabel.setText(NumberUtils.shortNumber(repliesCount));
|
||||
replyCountLabel.setText(NumberUtils.formatNumber(repliesCount, 1000));
|
||||
return;
|
||||
}
|
||||
|
||||
|
|
|
@ -114,11 +114,11 @@ public class StatusViewHolder extends StatusBaseViewHolder {
|
|||
}
|
||||
|
||||
protected void setReblogsCount(int reblogsCount) {
|
||||
reblogsCountLabel.setText(NumberUtils.shortNumber(reblogsCount));
|
||||
reblogsCountLabel.setText(NumberUtils.formatNumber(reblogsCount, 1000));
|
||||
}
|
||||
|
||||
protected void setFavouritedCount(int favouritedCount) {
|
||||
favouritedCountLabel.setText(NumberUtils.shortNumber(favouritedCount));
|
||||
favouritedCountLabel.setText(NumberUtils.formatNumber(favouritedCount, 1000));
|
||||
}
|
||||
|
||||
protected void hideStatusInfo() {
|
||||
|
|
|
@ -20,10 +20,8 @@ import com.keylesspalace.tusky.R
|
|||
import com.keylesspalace.tusky.databinding.ItemTrendingCellBinding
|
||||
import com.keylesspalace.tusky.entity.TrendingTagHistory
|
||||
import com.keylesspalace.tusky.interfaces.LinkListener
|
||||
import com.keylesspalace.tusky.util.formatNumber
|
||||
import com.keylesspalace.tusky.viewdata.TrendingViewData
|
||||
import java.text.NumberFormat
|
||||
import kotlin.math.ln
|
||||
import kotlin.math.pow
|
||||
|
||||
class TrendingTagViewHolder(
|
||||
private val binding: ItemTrendingCellBinding
|
||||
|
@ -70,25 +68,4 @@ class TrendingTagViewHolder(
|
|||
itemView.contentDescription =
|
||||
itemView.context.getString(R.string.accessibility_talking_about_tag, totalAccounts, tag)
|
||||
}
|
||||
|
||||
companion object {
|
||||
private val numberFormatter: NumberFormat = NumberFormat.getInstance()
|
||||
private val ln_1k = ln(1000.0)
|
||||
|
||||
/**
|
||||
* Format numbers according to the current locale. Numbers < min have
|
||||
* separators (',', '.', etc) inserted according to the locale.
|
||||
*
|
||||
* Numbers > min are scaled down to that by multiples of 1,000, and
|
||||
* a suffix appropriate to the scaling is appended.
|
||||
*/
|
||||
private fun formatNumber(num: Long, min: Int = 100000): String {
|
||||
if (num < min) return numberFormatter.format(num)
|
||||
|
||||
val exp = (ln(num.toDouble()) / ln_1k).toInt()
|
||||
|
||||
// TODO: is the choice of suffixes here locale-agnostic?
|
||||
return String.format("%.1f %c", num / 1000.0.pow(exp.toDouble()), "KMGTPE"[exp - 1])
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
@ -2,25 +2,27 @@
|
|||
|
||||
package com.keylesspalace.tusky.util
|
||||
|
||||
import java.text.DecimalFormat
|
||||
import java.text.NumberFormat
|
||||
import kotlin.math.abs
|
||||
import kotlin.math.floor
|
||||
import kotlin.math.log10
|
||||
import kotlin.math.ln
|
||||
import kotlin.math.pow
|
||||
import kotlin.math.sign
|
||||
|
||||
val shortLetters = arrayOf(' ', 'K', 'M', 'B', 'T', 'P', 'E')
|
||||
private val numberFormatter: NumberFormat = NumberFormat.getInstance()
|
||||
private val ln_1k = ln(1000.0)
|
||||
|
||||
fun shortNumber(number: Number): String {
|
||||
val numberAsDouble = number.toDouble()
|
||||
val nonNegativeValue = abs(numberAsDouble)
|
||||
var sign = ""
|
||||
if (numberAsDouble.sign < 0) { sign = "-" }
|
||||
val value = floor(log10(nonNegativeValue)).toInt()
|
||||
val base = value / 3
|
||||
if (value >= 3 && base < shortLetters.size) {
|
||||
return DecimalFormat("$sign#0.0").format(nonNegativeValue / 10.0.pow((base * 3).toDouble())) + shortLetters[base]
|
||||
} else {
|
||||
return DecimalFormat("$sign#,##0").format(nonNegativeValue)
|
||||
}
|
||||
/**
|
||||
* Format numbers according to the current locale. Numbers < min have
|
||||
* separators (',', '.', etc) inserted according to the locale.
|
||||
*
|
||||
* Numbers >= min are scaled down to that by multiples of 1,000, and
|
||||
* a suffix appropriate to the scaling is appended.
|
||||
*/
|
||||
fun formatNumber(num: Long, min: Int = 100000): String {
|
||||
val absNum = abs(num)
|
||||
if (absNum < min) return numberFormatter.format(num)
|
||||
|
||||
val exp = (ln(absNum.toDouble()) / ln_1k).toInt()
|
||||
|
||||
// Suffixes here are locale-agnostic
|
||||
return String.format("%.1f%c", num / 1000.0.pow(exp.toDouble()), "KMGTPE"[exp - 1])
|
||||
}
|
||||
|
|
|
@ -1,49 +1,70 @@
|
|||
package com.keylesspalace.tusky.util
|
||||
|
||||
import org.junit.AfterClass
|
||||
import org.junit.Assert
|
||||
import org.junit.BeforeClass
|
||||
import org.junit.Test
|
||||
import org.junit.runner.RunWith
|
||||
import org.junit.runners.Parameterized
|
||||
import java.util.Locale
|
||||
import kotlin.math.pow
|
||||
|
||||
class NumberUtilsTest {
|
||||
@RunWith(Parameterized::class)
|
||||
class NumberUtilsTest(private val input: Long, private val want: String) {
|
||||
companion object {
|
||||
/** Default locale before this test started */
|
||||
private lateinit var locale: Locale
|
||||
|
||||
@Test
|
||||
fun zeroShouldBeFormattedAsZero() {
|
||||
val shortNumber = shortNumber(0)
|
||||
Assert.assertEquals("0", shortNumber)
|
||||
}
|
||||
/**
|
||||
* Ensure the Locale is ENGLISH so that tests against literal strings like
|
||||
* "1.0M" later, even if the test host's locale is e.g. GERMAN which would
|
||||
* normally report "1,0M".
|
||||
*/
|
||||
@BeforeClass
|
||||
@JvmStatic
|
||||
fun beforeClass() {
|
||||
locale = Locale.getDefault()
|
||||
Locale.setDefault(Locale.ENGLISH)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun negativeValueShouldBeFormattedToNegativeValue() {
|
||||
val shortNumber = shortNumber(-1)
|
||||
Assert.assertEquals("-1", shortNumber)
|
||||
}
|
||||
@AfterClass
|
||||
@JvmStatic
|
||||
fun afterClass() {
|
||||
Locale.setDefault(locale)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun positiveValueShouldBeFormattedToPositiveValue() {
|
||||
val shortNumber = shortNumber(1)
|
||||
Assert.assertEquals("1", shortNumber)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun bigNumbersShouldBeShortened() {
|
||||
var shortNumber = 1L
|
||||
Assert.assertEquals("1", shortNumber(shortNumber))
|
||||
for (i in shortLetters.indices) {
|
||||
if (i == 0) {
|
||||
continue
|
||||
}
|
||||
shortNumber = 1000.0.pow(i.toDouble()).toLong()
|
||||
Assert.assertEquals("1.0" + shortLetters[i], shortNumber(shortNumber))
|
||||
@Parameterized.Parameters(name = "formatNumber_{0}")
|
||||
@JvmStatic
|
||||
fun data(): Iterable<Any> {
|
||||
return listOf(
|
||||
arrayOf(0, "0"),
|
||||
arrayOf(1, "1"),
|
||||
arrayOf(-1, "-1"),
|
||||
arrayOf(999, "999"),
|
||||
arrayOf(1000, "1.0K"),
|
||||
arrayOf(1500, "1.5K"),
|
||||
arrayOf(-1500, "-1.5K"),
|
||||
arrayOf(1000.0.pow(2).toLong(), "1.0M"),
|
||||
arrayOf(1000.0.pow(3).toLong(), "1.0G"),
|
||||
arrayOf(1000.0.pow(4).toLong(), "1.0T"),
|
||||
arrayOf(1000.0.pow(5).toLong(), "1.0P"),
|
||||
arrayOf(1000.0.pow(6).toLong(), "1.0E"),
|
||||
arrayOf(3, "3"),
|
||||
arrayOf(35, "35"),
|
||||
arrayOf(350, "350"),
|
||||
arrayOf(3500, "3.5K"),
|
||||
arrayOf(-3500, "-3.5K"),
|
||||
arrayOf(3500 * 1000, "3.5M"),
|
||||
arrayOf(3500 * 1000.0.pow(2).toLong(), "3.5G"),
|
||||
arrayOf(3500 * 1000.0.pow(3).toLong(), "3.5T"),
|
||||
arrayOf(3500 * 1000.0.pow(4).toLong(), "3.5P"),
|
||||
arrayOf(3500 * 1000.0.pow(5).toLong(), "3.5E")
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
fun roundingForNegativeAndPositiveValuesShouldBeTheSame() {
|
||||
var value = 3492
|
||||
Assert.assertEquals("-3.5K", shortNumber(-value))
|
||||
Assert.assertEquals("3.5K", shortNumber(value))
|
||||
value = 1501
|
||||
Assert.assertEquals("-1.5K", shortNumber(-value))
|
||||
Assert.assertEquals("1.5K", shortNumber(value))
|
||||
fun test() {
|
||||
Assert.assertEquals(want, formatNumber(input, 1000))
|
||||
}
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue