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@file:kotlin.jvm.JvmMultifileClass
@file:kotlin.jvm.JvmName("StringsKt")
package kotlin
import java.io.StringReader
import java.util.regex.Pattern
import java.nio.charset.Charset
import java.util.*
/**
* Returns the index within this string of the first occurrence of the specified character, starting from the specified offset.
*/
internal fun String.nativeIndexOf(ch: Char, fromIndex: Int): Int = (this as java.lang.String).indexOf(ch.toInt(), fromIndex)
/**
* Returns the index within this string of the first occurrence of the specified substring, starting from the specified offset.
*/
internal fun String.nativeIndexOf(str: String, fromIndex: Int): Int = (this as java.lang.String).indexOf(str, fromIndex)
/**
* Returns the index within this string of the last occurrence of the specified character.
*/
internal fun String.nativeLastIndexOf(ch: Char, fromIndex: Int): Int = (this as java.lang.String).lastIndexOf(ch.toInt(), fromIndex)
/**
* Returns the index within this string of the last occurrence of the specified character, starting from the specified offset.
*/
internal fun String.nativeLastIndexOf(str: String, fromIndex: Int): Int = (this as java.lang.String).lastIndexOf(str, fromIndex)
/**
* Returns `true` if this string is equal to [other], optionally ignoring character case.
*
* @param ignoreCase `true` to ignore character case when comparing strings. By default `false`.
*/
public fun String?.equals(other: String?, ignoreCase: Boolean = false): Boolean {
if (this === null)
return other === null
return if (!ignoreCase)
(this as java.lang.String).equals(other)
else
(this as java.lang.String).equalsIgnoreCase(other)
}
/**
* Returns a new string with all occurrences of [oldChar] replaced with [newChar].
*/
public fun String.replace(oldChar: Char, newChar: Char, ignoreCase: Boolean = false): String {
if (!ignoreCase)
return (this as java.lang.String).replace(oldChar, newChar)
else
return splitToSequence(oldChar, ignoreCase = ignoreCase).joinToString(separator = newChar.toString())
}
/**
* Returns a new string obtained by replacing all occurrences of the [oldValue] substring in this string
* with the specified [newValue] string.
*/
public fun String.replace(oldValue: String, newValue: String, ignoreCase: Boolean = false): String =
splitToSequence(oldValue, ignoreCase = ignoreCase).joinToString(separator = newValue)
/**
* Returns a new string with the first occurrence of [oldChar] replaced with [newChar].
*/
public fun String.replaceFirst(oldChar: Char, newChar: Char, ignoreCase: Boolean = false): String {
val index = indexOf(oldChar, ignoreCase = ignoreCase)
return if (index < 0) this else this.replaceRange(index, index + 1, newChar.toString())
}
/**
* Returns a new string obtained by replacing the first occurrence of the [oldValue] substring in this string
* with the specified [newValue] string.
*/
public fun String.replaceFirst(oldValue: String, newValue: String, ignoreCase: Boolean = false): String {
val index = indexOf(oldValue, ignoreCase = ignoreCase)
return if (index < 0) this else this.replaceRange(index, index + oldValue.length, newValue)
}
/**
* Returns a copy of this string converted to upper case using the rules of the default locale.
*/
public fun String.toUpperCase(): String = (this as java.lang.String).toUpperCase()
/**
* Returns a copy of this string converted to lower case using the rules of the default locale.
*/
public fun String.toLowerCase(): String = (this as java.lang.String).toLowerCase()
/**
* Returns a new character array containing the characters from this string.
*/
public fun String.toCharArray(): CharArray = (this as java.lang.String).toCharArray()
/**
* Copies characters from this string into the [destination] character array and returns that array.
*
* @param destination the array to copy to.
* @param destinationOffset the position in the array to copy to.
* @param startIndex the start offset (inclusive) of the substring to copy.
* @param endIndex the end offset (exclusive) of the substring to copy.
*/
public fun String.toCharArray(destination: CharArray, destinationOffset: Int = 0, startIndex: Int = 0, endIndex: Int = length): CharArray {
(this as java.lang.String).getChars(startIndex, endIndex, destination, destinationOffset)
return destination
}
/**
* Uses this string as a format string and returns a string obtained by substituting the specified arguments,
* using the default locale.
*/
public fun String.format(vararg args: Any?): String = java.lang.String.format(this, *args)
/**
* Uses this string as a format string and returns a string obtained by substituting the specified arguments, using
* the specified locale.
*/
public fun String.format(locale: Locale, vararg args : Any?) : String = java.lang.String.format(locale, this, *args)
/**
* Splits this char sequence around matches of the given regular expression.
* @param limit Non-negative value specifying the maximum number of substrings to return.
* Zero by default means no limit is set.
*/
public fun CharSequence.split(regex: Pattern, limit: Int = 0): List
{
require(limit >= 0, { "Limit must be non-negative, but was $limit" } )
return regex.split(this, if (limit == 0) -1 else limit).asList()
}
/**
* Returns a substring of this string starting with the specified index.
*/
public fun String.substring(startIndex: Int): String = (this as java.lang.String).substring(startIndex)
/**
* Returns the substring of this string starting and ending at the specified indices.
*/
public fun String.substring(startIndex: Int, endIndex: Int): String = (this as java.lang.String).substring(startIndex, endIndex)
/**
* Returns `true` if this string starts with the specified prefix.
*/
public fun String.startsWith(prefix: String, ignoreCase: Boolean = false): Boolean {
if (!ignoreCase)
return (this as java.lang.String).startsWith(prefix)
else
return regionMatches(0, prefix, 0, prefix.length, ignoreCase)
}
/**
* Returns `true` if a substring of this string starting at the specified offset [startIndex] starts with the specified prefix.
*/
public fun String.startsWith(prefix: String, startIndex: Int, ignoreCase: Boolean = false): Boolean {
if (!ignoreCase)
return (this as java.lang.String).startsWith(prefix, startIndex)
else
return regionMatches(startIndex, prefix, 0, prefix.length, ignoreCase)
}
/**
* Returns `true` if this string ends with the specified suffix.
*/
public fun String.endsWith(suffix: String, ignoreCase: Boolean = false): Boolean {
if (!ignoreCase)
return (this as java.lang.String).endsWith(suffix)
else
return regionMatches(length - suffix.length, suffix, 0, suffix.length, ignoreCase = true)
}
// "constructors" for String
/**
* Converts the data from a portion of the specified array of bytes to characters using the specified character set
* and returns the conversion result as a string.
*
* @param bytes the source array for the conversion.
* @param offset the offset in the array of the data to be converted.
* @param length the number of bytes to be converted.
* @param charsetName the name of the character set to use.
*/
public fun String(bytes: ByteArray, offset: Int, length: Int, charsetName: String): String = java.lang.String(bytes, offset, length, charsetName) as String
/**
* Converts the data from a portion of the specified array of bytes to characters using the specified character set
* and returns the conversion result as a string.
*
* @param bytes the source array for the conversion.
* @param offset the offset in the array of the data to be converted.
* @param length the number of bytes to be converted.
* @param charset the character set to use.
*/
public fun String(bytes: ByteArray, offset: Int, length: Int, charset: Charset): String = java.lang.String(bytes, offset, length, charset) as String
/**
* Converts the data from the specified array of bytes to characters using the specified character set
* and returns the conversion result as a string.
*/
public fun String(bytes: ByteArray, charsetName: String): String = java.lang.String(bytes, charsetName) as String
/**
* Converts the data from the specified array of bytes to characters using the specified character set
* and returns the conversion result as a string.
*/
public fun String(bytes: ByteArray, charset: Charset): String = java.lang.String(bytes, charset) as String
/**
* Converts the data from a portion of the specified array of bytes to characters using the UTF-8 character set
* and returns the conversion result as a string.
*
* @param bytes the source array for the conversion.
* @param offset the offset in the array of the data to be converted.
* @param length the number of bytes to be converted.
*/
public fun String(bytes: ByteArray, offset: Int, length: Int): String = java.lang.String(bytes, offset, length, Charsets.UTF_8) as String
/**
* Converts the data from the specified array of bytes to characters using the UTF-8 character set
* and returns the conversion result as a string.
*/
public fun String(bytes: ByteArray): String = java.lang.String(bytes, Charsets.UTF_8) as String
/**
* Converts the characters in the specified array to a string.
*/
public fun String(chars: CharArray): String = java.lang.String(chars) as String
/**
* Converts the characters from a portion of the specified array to a string.
*/
public fun String(chars: CharArray, offset: Int, length: Int): String = java.lang.String(chars, offset, length) as String
/**
* Converts the code points from a portion of the specified Unicode code point array to a string.
*/
public fun String(codePoints: IntArray, offset: Int, length: Int): String = java.lang.String(codePoints, offset, length) as String
/**
* Converts the contents of the specified StringBuffer to a string.
*/
public fun String(stringBuffer: java.lang.StringBuffer): String = java.lang.String(stringBuffer) as String
/**
* Converts the contents of the specified StringBuilder to a string.
*/
public fun String(stringBuilder: java.lang.StringBuilder): String = java.lang.String(stringBuilder) as String
/**
* Returns the character (Unicode code point) at the specified index.
*/
public fun String.codePointAt(index: Int): Int = (this as java.lang.String).codePointAt(index)
/**
* Returns the character (Unicode code point) before the specified index.
*/
public fun String.codePointBefore(index: Int): Int = (this as java.lang.String).codePointBefore(index)
/**
* Returns the number of Unicode code points in the specified text range of this String.
*/
public fun String.codePointCount(beginIndex: Int, endIndex: Int): Int = (this as java.lang.String).codePointCount(beginIndex, endIndex)
/**
* Compares two strings lexicographically, optionally ignoring case differences.
*/
public fun String.compareTo(other: String, ignoreCase: Boolean = false): Int {
if (ignoreCase)
return (this as java.lang.String).compareToIgnoreCase(other)
else
return (this as java.lang.String).compareTo(other)
}
/**
* Returns a new string obtained by concatenating this string and the specified string.
*/
// TODO: Deprecated in favor of operator plus, when it would be as efficient as concat
public fun String.concat(other: String): String = (this as java.lang.String).concat(other)
/**
* Returns `true` if this string is equal to the contents of the specified CharSequence.
*/
public fun String.contentEquals(charSequence: CharSequence): Boolean = (this as java.lang.String).contentEquals(charSequence)
/**
* Returns `true` if this string is equal to the contents of the specified StringBuffer.
*/
public fun String.contentEquals(stringBuilder: StringBuffer): Boolean = (this as java.lang.String).contentEquals(stringBuilder)
/**
* Copies the characters from a substring of this string into the specified character array.
* @param srcBegin the start offset (inclusive) of the substring to copy.
* @param srcEnd the end offset (exclusive) of the substring to copy.
* @param dst the array to copy to.
* @param dstBegin the position in the array to copy to.
*/
@Deprecated("Use toCharArray() instead.", ReplaceWith("toCharArray(dst, dstBegin, srcBegin, srcEnd)"))
public fun String.getChars(srcBegin: Int, srcEnd: Int, dst: CharArray, dstBegin: Int): Unit = (this as java.lang.String).getChars(srcBegin, srcEnd, dst, dstBegin)
/**
* Returns a canonical representation for this string object.
*/
public fun String.intern(): String = (this as java.lang.String).intern()
/**
* Returns `true` if this string is empty or consists solely of whitespace characters.
*/
public fun CharSequence.isBlank(): Boolean = length == 0 || indices.all { this[it].isWhitespace() }
/**
* Returns the index within this string that is offset from the given [index] by [codePointOffset] code points.
*/
public fun String.offsetByCodePoints(index: Int, codePointOffset: Int): Int = (this as java.lang.String).offsetByCodePoints(index, codePointOffset)
/**
* Returns `true` if the specified range in this char sequence is equal to the specified range in another char sequence.
* @param thisOffset the start offset in this char sequence of the substring to compare.
* @param other the string against a substring of which the comparison is performed.
* @param otherOffset the start offset in the other char sequence of the substring to compare.
* @param length the length of the substring to compare.
*/
public fun CharSequence.regionMatches(thisOffset: Int, other: CharSequence, otherOffset: Int, length: Int, ignoreCase: Boolean = false): Boolean {
if (this is String && other is String)
return this.regionMatches(thisOffset, other, otherOffset, length, ignoreCase)
else
return regionMatchesImpl(thisOffset, other, otherOffset, length, ignoreCase)
}
/**
* Returns `true` if the specified range in this string is equal to the specified range in another string.
* @param thisOffset the start offset in this string of the substring to compare.
* @param other the string against a substring of which the comparison is performed.
* @param otherOffset the start offset in the other string of the substring to compare.
* @param length the length of the substring to compare.
*/
public fun String.regionMatches(thisOffset: Int, other: String, otherOffset: Int, length: Int, ignoreCase: Boolean = false): Boolean =
if (!ignoreCase)
(this as java.lang.String).regionMatches(thisOffset, other, otherOffset, length)
else
(this as java.lang.String).regionMatches(ignoreCase, thisOffset, other, otherOffset, length)
/**
* Returns a copy of this string converted to lower case using the rules of the specified locale.
*/
public fun String.toLowerCase(locale: java.util.Locale): String = (this as java.lang.String).toLowerCase(locale)
/**
* Returns a copy of this string converted to upper case using the rules of the specified locale.
*/
public fun String.toUpperCase(locale: java.util.Locale): String = (this as java.lang.String).toUpperCase(locale)
/**
* Returns `true` if the contents of this string is equal to the word "true", ignoring case, and `false` otherwise.
*/
public fun String.toBoolean(): Boolean = java.lang.Boolean.parseBoolean(this)
/**
* Parses the string as a signed [Byte] number and returns the result.
* @throws NumberFormatException if the string is not a valid representation of a number.
*/
public fun String.toByte(): Byte = java.lang.Byte.parseByte(this)
/**
* Parses the string as a [Short] number and returns the result.
* @throws NumberFormatException if the string is not a valid representation of a number.
*/
public fun String.toShort(): Short = java.lang.Short.parseShort(this)
/**
* Parses the string as an [Int] number and returns the result.
* @throws NumberFormatException if the string is not a valid representation of a number.
*/
public fun String.toInt(): Int = java.lang.Integer.parseInt(this)
/**
* Parses the string as a [Long] number and returns the result.
* @throws NumberFormatException if the string is not a valid representation of a number.
*/
public fun String.toLong(): Long = java.lang.Long.parseLong(this)
/**
* Parses the string as a [Float] number and returns the result.
* @throws NumberFormatException if the string is not a valid representation of a number.
*/
public fun String.toFloat(): Float = java.lang.Float.parseFloat(this)
/**
* Parses the string as a [Double] number and returns the result.
* @throws NumberFormatException if the string is not a valid representation of a number.
*/
public fun String.toDouble(): Double = java.lang.Double.parseDouble(this)
/**
* Returns the list of all characters in this string.
*/
@Deprecated("Use toList() instead.", ReplaceWith("toList()"))
public fun String.toCharList(): List = toCharArray().toList()
/**
* Returns a subsequence of this char sequence.
*
* @param start the start index (inclusive).
* @param end the end index (exclusive).
*/
@Deprecated("Use subSequence(start, end) instead.", ReplaceWith("subSequence(start, end)"))
public operator fun CharSequence.get(start: Int, end: Int): CharSequence = subSequence(start, end)
/**
* Encodes the contents of this string using the specified character set and returns the resulting byte array.
*/
public fun String.toByteArray(charset: String): ByteArray = (this as java.lang.String).getBytes(charset)
/**
* Encodes the contents of this string using the specified character set and returns the resulting byte array.
*/
public fun String.toByteArray(charset: Charset = Charsets.UTF_8): ByteArray = (this as java.lang.String).getBytes(charset)
/**
* Converts the string into a regular expression [Pattern] optionally
* with the specified [flags] from [Pattern] or'd together
* so that strings can be split or matched on.
*/
public fun String.toPattern(flags: Int = 0): java.util.regex.Pattern {
return java.util.regex.Pattern.compile(this, flags)
}
/**
* Returns a copy of this string having its first letter uppercased, or the original string,
* if it's empty or already starts with an upper case letter.
*
* @sample test.text.StringTest.capitalize
*/
public fun String.capitalize(): String {
return if (isNotEmpty() && charAt(0).isLowerCase()) substring(0, 1).toUpperCase() + substring(1) else this
}
/**
* Returns a copy of this string having its first letter lowercased, or the original string,
* if it's empty or already starts with a lower case letter.
*
* @sample test.text.StringTest.decapitalize
*/
public fun String.decapitalize(): String {
return if (isNotEmpty() && charAt(0).isUpperCase()) substring(0, 1).toLowerCase() + substring(1) else this
}
/**
* Returns a string containing this char sequence repeated [n] times.
* @throws [IllegalArgumentException] when n < 0.
* @sample test.text.StringJVMTest.repeat
*/
public fun CharSequence.repeat(n: Int): String {
if (n < 0)
throw IllegalArgumentException("Value should be non-negative, but was $n")
val sb = StringBuilder(n * length)
for (i in 1..n) {
sb.append(this)
}
return sb.toString()
}
/**
* Appends the contents of this char sequence, excluding the first characters that satisfy the given [predicate],
* to the given Appendable.
*/
public inline fun CharSequence.dropWhileTo(result: T, predicate: (Char) -> Boolean): T {
var start = true
for (element in this) {
if (start && predicate(element)) {
// ignore
} else {
start = false
result.append(element)
}
}
return result
}
/**
* Appends the first characters from this char sequence that satisfy the given [predicate] to the given Appendable.
*/
public inline fun CharSequence.takeWhileTo(result: T, predicate: (Char) -> Boolean): T {
for (c in this) if (predicate(c)) result.append(c) else break
return result
}
/**
* A Comparator that orders strings ignoring character case.
*
* Note that this Comparator does not take locale into account,
* and will result in an unsatisfactory ordering for certain locales.
*/
public val String.Companion.CASE_INSENSITIVE_ORDER: Comparator
get() = java.lang.String.CASE_INSENSITIVE_ORDER
