Rename

2025-06-04 13:33:51 +08:00
1 parent b86d90021c
commit 6c0757c91b
@@ -0,0 +1,131 @@
+@file:Suppress("unused")
+
+package io.legato.kazusa.utils
+
+import android.content.res.Resources
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import android.graphics.drawable.BitmapDrawable
+import android.graphics.drawable.Drawable
+import java.io.BufferedReader
+import java.io.InputStream
+import java.io.InputStreamReader
+import java.text.DecimalFormat
+import kotlin.math.log10
+import kotlin.math.pow
+
+/**
+ * 数据类型转换、单位转换
+ *
+ * @author 李玉江[QQ:1023694760]
+ * @since 2014-4-18
+ */
+@Suppress("MemberVisibilityCanBePrivate")
+object ConvertUtils {
+    const val GB: Long = 1073741824
+    const val MB: Long = 1048576
+    const val KB: Long = 1024
+
+    fun toInt(obj: Any): Int {
+        return kotlin.runCatching {
+            Integer.parseInt(obj.toString())
+        }.getOrDefault(-1)
+    }
+
+    fun toInt(bytes: ByteArray): Int {
+        var result = 0
+        var byte: Byte
+        for (i in bytes.indices) {
+            byte = bytes[i]
+            result += (byte.toInt() and 0xFF).shl(8 * i)
+        }
+        return result
+    }
+
+    fun toFloat(obj: Any): Float {
+        return kotlin.runCatching {
+            java.lang.Float.parseFloat(obj.toString())
+        }.getOrDefault(-1f)
+    }
+
+    fun toString(objects: Array<Any>, tag: String): String {
+        val sb = StringBuilder()
+        for (`object` in objects) {
+            sb.append(`object`)
+            sb.append(tag)
+        }
+        return sb.toString()
+    }
+
+    @JvmOverloads
+    fun toBitmap(bytes: ByteArray, width: Int = -1, height: Int = -1): Bitmap? {
+        var bitmap: Bitmap? = null
+        if (bytes.isNotEmpty()) {
+            kotlin.runCatching {
+                val options = BitmapFactory.Options()
+                // 设置让解码器以最佳方式解码
+                options.inPreferredConfig = null
+                if (width > 0 && height > 0) {
+                    options.outWidth = width
+                    options.outHeight = height
+                }
+                bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.size, options)
+                bitmap!!.density = 96// 96 dpi
+            }
+        }
+        return bitmap
+    }
+
+    private fun toDrawable(bitmap: Bitmap?): Drawable? {
+        return if (bitmap == null) null else BitmapDrawable(Resources.getSystem(), bitmap)
+    }
+
+    fun toDrawable(bytes: ByteArray): Drawable? {
+        return toDrawable(toBitmap(bytes))
+    }
+
+    fun formatFileSize(length: Long): String {
+        if (length <= 0) return "0"
+        val units = arrayOf("b", "kb", "M", "G", "T")
+        //计算单位的，原理是利用lg,公式是 lg(1024^n) = nlg(1024)，最后 nlg(1024)/lg(1024) = n。
+        val digitGroups = (log10(length.toDouble()) / log10(1024.0)).toInt()
+        //计算原理是，size/单位值。单位值指的是:比如说b = 1024,KB = 1024^2
+        return DecimalFormat("#,##0.##").format(length / 1024.0.pow(digitGroups.toDouble())) + " " + units[digitGroups]
+    }
+
+    @JvmOverloads
+    fun toString(`is`: InputStream, charset: String = "utf-8"): String {
+        val sb = StringBuilder()
+        kotlin.runCatching {
+            val reader = BufferedReader(InputStreamReader(`is`, charset))
+            while (true) {
+                val line = reader.readLine()
+                if (line == null) {
+                    break
+                } else {
+                    sb.append(line).append("\n")
+                }
+            }
+            reader.close()
+            `is`.close()
+        }
+        return sb.toString()
+    }
+
+
+}
+
+val Int.hexString: String
+    get() = Integer.toHexString(this)
+
+fun Int.dpToPx(): Int = this.toFloat().dpToPx().toInt()
+
+fun Int.spToPx(): Int = this.toFloat().spToPx().toInt()
+
+fun Float.dpToPx(): Float = android.util.TypedValue.applyDimension(
+    android.util.TypedValue.COMPLEX_UNIT_DIP, this, Resources.getSystem().displayMetrics
+)
+
+fun Float.spToPx(): Float = android.util.TypedValue.applyDimension(
+    android.util.TypedValue.COMPLEX_UNIT_SP, this, Resources.getSystem().displayMetrics
+)