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//------------------------------------------------------------------------------
// <copyright file="IndentTextWriter.cs" company="Microsoft">
//
// <OWNER>Microsoft</OWNER>
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.CodeDom.Compiler {
using System.Diagnostics;
using System;
using System.IO;
using System.Text;
using System.Security.Permissions;
using System.Globalization;
/// <devdoc>
/// <para>Provides a text writer that can indent new lines by a tabString token.</para>
/// </devdoc>
public class IndentedTextWriter : TextWriter {
private TextWriter writer;
private int indentLevel;
private bool tabsPending;
private string tabString;
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public const string DefaultTabString = " ";
/// <devdoc>
/// <para>
/// Initializes a new instance of <see cref='System.CodeDom.Compiler.IndentedTextWriter'/> using the specified
/// text writer and default tab string.
/// </para>
/// </devdoc>
public IndentedTextWriter(TextWriter writer) : this(writer, DefaultTabString) {
}
/// <devdoc>
/// <para>
/// Initializes a new instance of <see cref='System.CodeDom.Compiler.IndentedTextWriter'/> using the specified
/// text writer and tab string.
/// </para>
/// </devdoc>
public IndentedTextWriter(TextWriter writer, string tabString): base(CultureInfo.InvariantCulture) {
this.writer = writer;
this.tabString = tabString;
indentLevel = 0;
tabsPending = false;
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override Encoding Encoding {
get {
return writer.Encoding;
}
}
/// <devdoc>
/// <para>
/// Gets or sets the new line character to use.
/// </para>
/// </devdoc>
public override string NewLine {
get {
return writer.NewLine;
}
set {
writer.NewLine = value;
}
}
/// <devdoc>
/// <para>
/// Gets or sets the number of spaces to indent.
/// </para>
/// </devdoc>
public int Indent {
get {
return indentLevel;
}
set {
Debug.Assert(value >= 0, "Bogus Indent... probably caused by mismatched Indent++ and Indent--");
if (value < 0) {
value = 0;
}
indentLevel = value;
}
}
/// <devdoc>
/// <para>
/// Gets or sets the TextWriter to use.
/// </para>
/// </devdoc>
public TextWriter InnerWriter {
get {
return writer;
}
}
internal string TabString {
get { return tabString; }
}
/// <devdoc>
/// <para>
/// Closes the document being written to.
/// </para>
/// </devdoc>
public override void Close() {
writer.Close();
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override void Flush() {
writer.Flush();
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
protected virtual void OutputTabs() {
if (tabsPending) {
for (int i=0; i < indentLevel; i++) {
writer.Write(tabString);
}
tabsPending = false;
}
}
/// <devdoc>
/// <para>
/// Writes a string
/// to the text stream.
/// </para>
/// </devdoc>
public override void Write(string s) {
OutputTabs();
writer.Write(s);
}
/// <devdoc>
/// <para>
/// Writes the text representation of a Boolean value to the text stream.
/// </para>
/// </devdoc>
public override void Write(bool value) {
OutputTabs();
writer.Write(value);
}
/// <devdoc>
/// <para>
/// Writes a character to the text stream.
/// </para>
/// </devdoc>
public override void Write(char value) {
OutputTabs();
writer.Write(value);
}
/// <devdoc>
/// <para>
/// Writes a
/// character array to the text stream.
/// </para>
/// </devdoc>
public override void Write(char[] buffer) {
OutputTabs();
writer.Write(buffer);
}
/// <devdoc>
/// <para>
/// Writes a subarray
/// of characters to the text stream.
/// </para>
/// </devdoc>
public override void Write(char[] buffer, int index, int count) {
OutputTabs();
writer.Write(buffer, index, count);
}
/// <devdoc>
/// <para>
/// Writes the text representation of a Double to the text stream.
/// </para>
/// </devdoc>
public override void Write(double value) {
OutputTabs();
writer.Write(value);
}
/// <devdoc>
/// <para>
/// Writes the text representation of
/// a Single to the text
/// stream.
/// </para>
/// </devdoc>
public override void Write(float value) {
OutputTabs();
writer.Write(value);
}
/// <devdoc>
/// <para>
/// Writes the text representation of an integer to the text stream.
/// </para>
/// </devdoc>
public override void Write(int value) {
OutputTabs();
writer.Write(value);
}
/// <devdoc>
/// <para>
/// Writes the text representation of an 8-byte integer to the text stream.
/// </para>
/// </devdoc>
public override void Write(long value) {
OutputTabs();
writer.Write(value);
}
/// <devdoc>
/// <para>
/// Writes the text representation of an object
/// to the text stream.
/// </para>
/// </devdoc>
public override void Write(object value) {
OutputTabs();
writer.Write(value);
}
/// <devdoc>
/// <para>
/// Writes out a formatted string, using the same semantics as specified.
/// </para>
/// </devdoc>
public override void Write(string format, object arg0) {
OutputTabs();
writer.Write(format, arg0);
}
/// <devdoc>
/// <para>
/// Writes out a formatted string,
/// using the same semantics as specified.
/// </para>
/// </devdoc>
public override void Write(string format, object arg0, object arg1) {
OutputTabs();
writer.Write(format, arg0, arg1);
}
/// <devdoc>
/// <para>
/// Writes out a formatted string,
/// using the same semantics as specified.
/// </para>
/// </devdoc>
public override void Write(string format, params object[] arg) {
OutputTabs();
writer.Write(format, arg);
}
/// <devdoc>
/// <para>
/// Writes the specified
/// string to a line without tabs.
/// </para>
/// </devdoc>
public void WriteLineNoTabs(string s) {
writer.WriteLine(s);
}
/// <devdoc>
/// <para>
/// Writes the specified string followed by
/// a line terminator to the text stream.
/// </para>
/// </devdoc>
public override void WriteLine(string s) {
OutputTabs();
writer.WriteLine(s);
tabsPending = true;
}
/// <devdoc>
/// <para>
/// Writes a line terminator.
/// </para>
/// </devdoc>
public override void WriteLine() {
OutputTabs();
writer.WriteLine();
tabsPending = true;
}
/// <devdoc>
/// <para>
/// Writes the text representation of a Boolean followed by a line terminator to
/// the text stream.
/// </para>
/// </devdoc>
public override void WriteLine(bool value) {
OutputTabs();
writer.WriteLine(value);
tabsPending = true;
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override void WriteLine(char value) {
OutputTabs();
writer.WriteLine(value);
tabsPending = true;
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override void WriteLine(char[] buffer) {
OutputTabs();
writer.WriteLine(buffer);
tabsPending = true;
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override void WriteLine(char[] buffer, int index, int count) {
OutputTabs();
writer.WriteLine(buffer, index, count);
tabsPending = true;
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override void WriteLine(double value) {
OutputTabs();
writer.WriteLine(value);
tabsPending = true;
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override void WriteLine(float value) {
OutputTabs();
writer.WriteLine(value);
tabsPending = true;
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override void WriteLine(int value) {
OutputTabs();
writer.WriteLine(value);
tabsPending = true;
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override void WriteLine(long value) {
OutputTabs();
writer.WriteLine(value);
tabsPending = true;
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override void WriteLine(object value) {
OutputTabs();
writer.WriteLine(value);
tabsPending = true;
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override void WriteLine(string format, object arg0) {
OutputTabs();
writer.WriteLine(format, arg0);
tabsPending = true;
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override void WriteLine(string format, object arg0, object arg1) {
OutputTabs();
writer.WriteLine(format, arg0, arg1);
tabsPending = true;
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override void WriteLine(string format, params object[] arg) {
OutputTabs();
writer.WriteLine(format, arg);
tabsPending = true;
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
[CLSCompliant(false)]
public override void WriteLine(UInt32 value) {
OutputTabs();
writer.WriteLine(value);
tabsPending = true;
}
internal void InternalOutputTabs() {
for (int i=0; i < indentLevel; i++) {
writer.Write(tabString);
}
}
}
internal class Indentation {
private IndentedTextWriter writer;
private int indent;
private string s;
internal Indentation(IndentedTextWriter writer, int indent) {
this.writer = writer;
this.indent = indent;
s = null;
}
internal string IndentationString {
get {
if ( s == null) {
string tabString = writer.TabString;
StringBuilder sb = new StringBuilder(indent * tabString.Length);
for( int i = 0; i < indent; i++) {
sb.Append(tabString);
}
s = sb.ToString();
}
return s;
}
}
}
}
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