kotlin.template.Templates.kt Maven / Gradle / Ivy
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package kotlin.template
import kotlin.dom. *
import org.w3c.dom.Node
import java.util.Locale
import java.text.NumberFormat
import java.text.DateFormat
import java.util.Date
@Deprecated("This class is part of an experimental implementation of string templates and is going to be removed")
public class StringTemplate(private val values: Array) {
/**
* Converts the template into a String
*/
override fun toString(): String {
val out = StringBuilder()
forEach { out.append(it) }
return out.toString()
}
/**
* Performs the given function on each value in the collection
*/
public fun forEach(fn: (Any?) -> Unit): Unit {
for (v in values) {
fn(v)
}
}
}
/**
* Converts the string template into a string using the given formatter
* to encode values as Strings performing any special encoding (such as for HTML)
* or internationalisation.
*
* See [[HtmlFormatter] and [[LocaleFormatter] respectively.
*/
@Deprecated("This function is part of an experimental implementation of string templates and is going to be removed")
public fun StringTemplate.toString(formatter: Formatter): String {
val buffer = StringBuilder()
append(buffer, formatter)
return buffer.toString()
}
/**
* Appends the text representation of this string template to the given output
* using the supplied formatter
*/
@Deprecated("This function is part of an experimental implementation of string templates and is going to be removed")
public fun StringTemplate.append(out: Appendable, formatter: Formatter): Unit {
var constantText = true
this.forEach {
if (constantText) {
if (it == null) {
throw IllegalStateException("No constant checks should be null");
} else {
val text = it.toString()
out.append(text)
}
} else {
formatter.format(out, it)
}
constantText = !constantText
}
}
/**
* Converts this string template to internationalised text using the supplied
* [[LocaleFormatter]]
*/
@Deprecated("This function is part of an experimental implementation of string templates and is going to be removed")
public fun StringTemplate.toLocale(formatter: LocaleFormatter = LocaleFormatter()): String = toString(formatter)
/**
* Converts this string template to HTML text
*/
@Deprecated("This function is part of an experimental implementation of string templates and is going to be removed")
public fun StringTemplate.toHtml(formatter: HtmlFormatter = HtmlFormatter()): String = toString(formatter)
/**
* Represents a formatter and encoder of values in a [[StringTemplate]] which understands
* how to format values for a particular [[Locale]] such as with the [[LocaleFormatter]] or
* to escape particular characters in different output formats such as [[HtmlFormatter]
*/
@Deprecated("This interface is part of an experimental implementation of string templates and is going to be removed")
public interface Formatter {
public fun format(buffer: Appendable, value: Any?): Unit
}
/**
* Formats strings with no special encoding other than allowing the null text to be
* configured
*/
@Deprecated("This class is part of an experimental implementation of string templates and is going to be removed")
public open class ToStringFormatter : Formatter {
private val nullString: String = "null"
override fun toString(): String = "ToStringFormatter"
public override fun format(out: Appendable, value: Any?) {
if (value == null) {
format(out, nullString)
} else if (value is StringTemplate) {
value.append(out, this)
} else {
format(out, value.toString())
}
}
/**
* Formats the given string allowing derived classes to override this method
* to escape strings with special characters such as for HTML
*/
public open fun format(out: Appendable, text: String): Unit {
out.append(text)
}
}
@Deprecated("This property is part of an experimental implementation of string templates and is going to be removed")
public val defaultLocale: Locale = Locale.getDefault()
/**
* Formats values using a given [[Locale]] for internationalisation
*/
@Deprecated("This class is part of an experimental implementation of string templates and is going to be removed")
public open class LocaleFormatter(protected val locale: Locale = defaultLocale) : ToStringFormatter() {
override fun toString(): String = "LocaleFormatter{$locale}"
public var numberFormat: NumberFormat = NumberFormat.getInstance(locale)!!
public var dateFormat: DateFormat = DateFormat.getDateTimeInstance(DateFormat.DEFAULT, DateFormat.DEFAULT, locale)!!
public override fun format(out: Appendable, value: Any?) {
if (value is Number) {
format(out, format(value))
} else if (value is Date) {
format(out, format(value))
} else {
super.format(out, value)
}
}
public fun format(number: Number): String {
return numberFormat.format(number) ?: ""
}
public fun format(date: Date): String {
return dateFormat.format(date) ?: ""
}
}
/**
* Formats values for HTML encoding, escaping special characters in HTML.
*/
@Deprecated("This class is part of an experimental implementation of string templates and is going to be removed")
public class HtmlFormatter(locale: Locale = defaultLocale) : LocaleFormatter(locale) {
override fun toString(): String = "HtmlFormatter{$locale}"
public override fun format(out: Appendable, value: Any?) {
if (value is Node) {
out.append(value.toXmlString())
} else {
super.format(out, value)
}
}
public override fun format(buffer: Appendable, text: String): Unit {
for (c in text) {
if (c == '<') buffer.append("<")
else if (c == '>') buffer.append(">")
else if (c == '&') buffer.append("&")
else if (c == '"') buffer.append(""")
else buffer.append(c)
}
}
}