[util] Convert Printer from Java to Kotlin
This commit is contained in:
Sergej Jaskiewicz
committed by
Space Team
Space Team
parent
c442d0e159
commit
895d107ac5
@@ -13,176 +13,140 @@
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
package org.jetbrains.kotlin.utils
|
||||
|
||||
package org.jetbrains.kotlin.utils;
|
||||
import java.io.IOException
|
||||
|
||||
import org.jetbrains.annotations.NotNull;
|
||||
/**
|
||||
* A wrapper around an arbitrary [Appendable] making it convenient to print text with indentation.
|
||||
*/
|
||||
open class Printer private constructor(
|
||||
private val out: Appendable,
|
||||
private val maxBlankLines: Int,
|
||||
private val indentUnit: String,
|
||||
private var indent: String
|
||||
) {
|
||||
private var blankLineCountIncludingCurrent = 0
|
||||
private var withholdIndentOnce = false
|
||||
private var length = 0
|
||||
|
||||
import java.io.IOException;
|
||||
import java.util.Collection;
|
||||
import java.util.Iterator;
|
||||
constructor(out: Appendable, indentUnit: String) : this(out, Int.MAX_VALUE, indentUnit)
|
||||
|
||||
public class Printer {
|
||||
private static final String DEFAULT_INDENTATION_UNIT = " ";
|
||||
public static final String LINE_SEPARATOR = System.getProperty("line.separator");
|
||||
@JvmOverloads
|
||||
constructor(out: Appendable, maxBlankLines: Int = Int.MAX_VALUE, indentUnit: String = DEFAULT_INDENTATION_UNIT) : this(
|
||||
out,
|
||||
maxBlankLines,
|
||||
indentUnit,
|
||||
indent = "",
|
||||
)
|
||||
|
||||
private final Appendable out;
|
||||
private final int maxBlankLines;
|
||||
constructor(out: Appendable, parent: Printer) : this(out, parent.maxBlankLines, parent.indentUnit, parent.indent)
|
||||
|
||||
private String indent;
|
||||
private final String indentUnit;
|
||||
private int blankLineCountIncludingCurrent = 0;
|
||||
private boolean withholdIndentOnce = false;
|
||||
private int length = 0;
|
||||
|
||||
public Printer(@NotNull Appendable out) {
|
||||
this(out, Integer.MAX_VALUE);
|
||||
}
|
||||
|
||||
public Printer(@NotNull Appendable out, @NotNull String indentUnit) {
|
||||
this(out, Integer.MAX_VALUE, indentUnit);
|
||||
}
|
||||
|
||||
public Printer(@NotNull Appendable out, int maxBlankLines) {
|
||||
this(out, maxBlankLines, DEFAULT_INDENTATION_UNIT);
|
||||
}
|
||||
|
||||
public Printer(@NotNull Appendable out, int maxBlankLines, @NotNull String indentUnit) {
|
||||
this(out, maxBlankLines, indentUnit, "");
|
||||
}
|
||||
|
||||
private Printer(@NotNull Appendable out, int maxBlankLines, @NotNull String indentUnit, @NotNull String indent) {
|
||||
this.out = out;
|
||||
this.maxBlankLines = maxBlankLines;
|
||||
this.indentUnit = indentUnit;
|
||||
this.indent = indent;
|
||||
}
|
||||
|
||||
public Printer(@NotNull Appendable out, @NotNull Printer parent) {
|
||||
this(out, parent.maxBlankLines, parent.indentUnit, parent.indent);
|
||||
}
|
||||
|
||||
private void append(Object o) {
|
||||
private fun append(o: Any?) {
|
||||
try {
|
||||
String string = o.toString();
|
||||
out.append(string);
|
||||
length += string.length();
|
||||
}
|
||||
catch (IOException e) {
|
||||
val string = o.toString()
|
||||
out.append(string)
|
||||
length += string.length
|
||||
} catch (e: IOException) {
|
||||
// Do nothing
|
||||
}
|
||||
}
|
||||
|
||||
@NotNull
|
||||
public Printer println(Object... objects) {
|
||||
print(objects);
|
||||
printLineSeparator();
|
||||
|
||||
return this;
|
||||
fun println(vararg objects: Any?): Printer {
|
||||
print(*objects)
|
||||
printLineSeparator()
|
||||
return this
|
||||
}
|
||||
|
||||
private void printLineSeparator() {
|
||||
private fun printLineSeparator() {
|
||||
if (blankLineCountIncludingCurrent <= maxBlankLines) {
|
||||
blankLineCountIncludingCurrent++;
|
||||
append(LINE_SEPARATOR);
|
||||
blankLineCountIncludingCurrent++
|
||||
append(LINE_SEPARATOR)
|
||||
}
|
||||
}
|
||||
|
||||
@NotNull
|
||||
public Printer print(Object... objects) {
|
||||
fun print(vararg objects: Any?): Printer {
|
||||
if (withholdIndentOnce) {
|
||||
withholdIndentOnce = false;
|
||||
withholdIndentOnce = false
|
||||
} else if (objects.isNotEmpty()) {
|
||||
printIndent()
|
||||
}
|
||||
else if (objects.length > 0) {
|
||||
printIndent();
|
||||
printWithNoIndent(*objects)
|
||||
return this
|
||||
}
|
||||
|
||||
fun printIndent() {
|
||||
append(indent)
|
||||
}
|
||||
|
||||
fun printWithNoIndent(vararg objects: Any?): Printer {
|
||||
for (`object` in objects) {
|
||||
blankLineCountIncludingCurrent = 0
|
||||
append(`object`)
|
||||
}
|
||||
printWithNoIndent(objects);
|
||||
|
||||
return this;
|
||||
return this
|
||||
}
|
||||
|
||||
public void printIndent() {
|
||||
append(indent);
|
||||
fun withholdIndentOnce(): Printer {
|
||||
withholdIndentOnce = true
|
||||
return this
|
||||
}
|
||||
|
||||
@NotNull
|
||||
public Printer printWithNoIndent(Object... objects) {
|
||||
for (Object object : objects) {
|
||||
blankLineCountIncludingCurrent = 0;
|
||||
append(object);
|
||||
}
|
||||
|
||||
return this;
|
||||
fun printlnWithNoIndent(vararg objects: Any?): Printer {
|
||||
printWithNoIndent(*objects)
|
||||
printLineSeparator()
|
||||
return this
|
||||
}
|
||||
|
||||
@NotNull
|
||||
public Printer withholdIndentOnce() {
|
||||
withholdIndentOnce = true;
|
||||
return this;
|
||||
fun pushIndent(): Printer {
|
||||
indent += indentUnit
|
||||
return this
|
||||
}
|
||||
|
||||
@NotNull
|
||||
public Printer printlnWithNoIndent(Object... objects) {
|
||||
printWithNoIndent(objects);
|
||||
printLineSeparator();
|
||||
|
||||
return this;
|
||||
fun popIndent(): Printer {
|
||||
check(indent.length >= indentUnit.length) { "No indentation to pop" }
|
||||
indent = indent.substring(indentUnit.length)
|
||||
return this
|
||||
}
|
||||
|
||||
@NotNull
|
||||
public Printer pushIndent() {
|
||||
indent += indentUnit;
|
||||
|
||||
return this;
|
||||
}
|
||||
|
||||
@NotNull
|
||||
public Printer popIndent() {
|
||||
if (indent.length() < indentUnit.length()) {
|
||||
throw new IllegalStateException("No indentation to pop");
|
||||
}
|
||||
|
||||
indent = indent.substring(indentUnit.length());
|
||||
|
||||
return this;
|
||||
}
|
||||
|
||||
@NotNull
|
||||
public Printer separated(Object separator, Object... items) {
|
||||
for (int i = 0; i < items.length; i++) {
|
||||
fun separated(separator: Any, vararg items: Any?): Printer {
|
||||
for (i in items.indices) {
|
||||
if (i > 0) {
|
||||
printlnWithNoIndent(separator);
|
||||
printlnWithNoIndent(separator)
|
||||
}
|
||||
printlnWithNoIndent(items[i]);
|
||||
printlnWithNoIndent(items[i])
|
||||
}
|
||||
return this;
|
||||
return this
|
||||
}
|
||||
|
||||
@NotNull
|
||||
public Printer separated(Object separator, Collection<?> items) {
|
||||
for (Iterator<?> iterator = items.iterator(); iterator.hasNext(); ) {
|
||||
printlnWithNoIndent(iterator.next());
|
||||
fun separated(separator: Any, items: Collection<*>): Printer {
|
||||
val iterator = items.iterator()
|
||||
while (iterator.hasNext()) {
|
||||
printlnWithNoIndent(iterator.next())
|
||||
if (iterator.hasNext()) {
|
||||
printlnWithNoIndent(separator);
|
||||
printlnWithNoIndent(separator)
|
||||
}
|
||||
}
|
||||
return this;
|
||||
return this
|
||||
}
|
||||
|
||||
public boolean isEmpty() {
|
||||
return length == 0;
|
||||
val isEmpty: Boolean
|
||||
get() = length == 0
|
||||
|
||||
override fun toString(): String {
|
||||
return out.toString()
|
||||
}
|
||||
|
||||
@Override
|
||||
public String toString() {
|
||||
return out.toString();
|
||||
}
|
||||
val currentIndentLengthInUnits: Int
|
||||
get() = indent.length / indentUnit.length
|
||||
|
||||
public int getCurrentIndentLengthInUnits() {
|
||||
return indent.length() / indentUnit.length();
|
||||
}
|
||||
val indentUnitLength: Int
|
||||
get() = indentUnit.length
|
||||
|
||||
public int getIndentUnitLength() {
|
||||
return indentUnit.length();
|
||||
companion object {
|
||||
private const val DEFAULT_INDENTATION_UNIT = " "
|
||||
|
||||
@JvmField
|
||||
val LINE_SEPARATOR: String = System.getProperty("line.separator")
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user