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/***************************************************************************************************
* Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
**************************************************************************************************/
package at.bitfire.ical4android
import android.content.ContentProviderClient
import android.content.ContentValues
import android.database.Cursor
import android.database.DatabaseUtils
import android.os.Build
import org.apache.commons.lang3.StringUtils
import java.lang.reflect.Modifier
import java.util.*
object MiscUtils {
const val TOSTRING_MAXCHARS = 10000
/**
* Generates useful toString info (fields and values) from [obj] by reflection.
*
* @param obj object to inspect
* @return string containing properties and non-static declared fields
*/
fun reflectionToString(obj: Any): String {
val s = LinkedList<String>()
var clazz: Class<in Any>? = obj.javaClass
while (clazz != null) {
for (prop in clazz.declaredFields.filterNot { Modifier.isStatic(it.modifiers) }) {
prop.isAccessible = true
val valueStr = try {
StringUtils.abbreviate(prop.get(obj)?.toString(), TOSTRING_MAXCHARS)
} catch(e: OutOfMemoryError) {
"![$e]"
}
s += "${prop.name}=" + valueStr
}
clazz = clazz.superclass
}
return "${obj.javaClass.simpleName}=[${s.joinToString(", ")}]"
}
/**
* Removes empty [String] values from [values].
*
* @param values set of values to be modified
* @return the modified object (which is the same object as passed in; for chaining)
*/
fun removeEmptyStrings(values: ContentValues): ContentValues {
val it = values.keySet().iterator()
while (it.hasNext()) {
val obj = values[it.next()]
if (obj is String && obj.isEmpty())
it.remove()
}
return values
}
object ContentProviderClientHelper {
fun ContentProviderClient.closeCompat() {
@Suppress("DEPRECATION")
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
close()
else
release()
}
}
object CursorHelper {
/**
* Returns the entire contents of the current row as a [ContentValues] object.
*
* @param removeEmptyRows whether rows with empty values should be removed
* @return entire contents of the current row
*/
fun Cursor.toValues(removeEmptyRows: Boolean = false): ContentValues {
val values = ContentValues(columnCount)
DatabaseUtils.cursorRowToContentValues(this, values)
if (removeEmptyRows)
removeEmptyStrings(values)
return values
}
}
}
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