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author | Jan Tattermusch <jtattermusch@users.noreply.github.com> | 2015-04-17 14:15:52 -0700 |
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committer | Jan Tattermusch <jtattermusch@users.noreply.github.com> | 2015-04-17 14:15:52 -0700 |
commit | 01c8c35ca3d3424a9473dd22ea2456933b3e8d36 (patch) | |
tree | de582cb9ef3e449f24015dec09f80e998806b26a /csharp/src/ProtocolBuffers/TextGenerator.cs | |
parent | 813d6d652d8091e9365bfbd01efb5f2ee8bdfbce (diff) | |
parent | 1eab56aee8dddcb656db67d9fb87a8cc6a2ac112 (diff) | |
download | protobuf-01c8c35ca3d3424a9473dd22ea2456933b3e8d36.tar.gz protobuf-01c8c35ca3d3424a9473dd22ea2456933b3e8d36.tar.bz2 protobuf-01c8c35ca3d3424a9473dd22ea2456933b3e8d36.zip |
Merge pull request #2 from jtattermusch/csharp_protobuf_imported
Pulling protobuf-csharp-port into csharp/ directory
Diffstat (limited to 'csharp/src/ProtocolBuffers/TextGenerator.cs')
-rw-r--r-- | csharp/src/ProtocolBuffers/TextGenerator.cs | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/csharp/src/ProtocolBuffers/TextGenerator.cs b/csharp/src/ProtocolBuffers/TextGenerator.cs new file mode 100644 index 00000000..30cbf0fd --- /dev/null +++ b/csharp/src/ProtocolBuffers/TextGenerator.cs @@ -0,0 +1,159 @@ +#region Copyright notice and license
+
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc. All rights reserved.
+// http://github.com/jskeet/dotnet-protobufs/
+// Original C++/Java/Python code:
+// http://code.google.com/p/protobuf/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#endregion
+
+using System;
+using System.IO;
+using System.Text;
+
+namespace Google.ProtocolBuffers
+{
+ /// <summary>
+ /// Helper class to control indentation. Used for TextFormat and by ProtoGen.
+ /// </summary>
+ public sealed class TextGenerator
+ {
+ /// <summary>
+ /// The string to use at the end of each line. We assume that "Print" is only called using \n
+ /// to indicate a line break; that's what we use to detect when we need to indent etc, and
+ /// *just* the \n is replaced with the contents of lineBreak.
+ /// </summary>
+ private readonly string lineBreak;
+
+ /// <summary>
+ /// Writer to write formatted text to.
+ /// </summary>
+ private readonly TextWriter writer;
+
+ /// <summary>
+ /// Keeps track of whether the next piece of text should be indented
+ /// </summary>
+ private bool atStartOfLine = true;
+
+ /// <summary>
+ /// Keeps track of the current level of indentation
+ /// </summary>
+ private readonly StringBuilder indent = new StringBuilder();
+
+ /// <summary>
+ /// Creates a generator writing to the given writer. The writer
+ /// is not closed by this class.
+ /// </summary>
+ public TextGenerator(TextWriter writer, string lineBreak)
+ {
+ this.writer = writer;
+ this.lineBreak = lineBreak;
+ }
+
+ /// <summary>
+ /// Indents text by two spaces. After calling Indent(), two spaces
+ /// will be inserted at the beginning of each line of text. Indent() may
+ /// be called multiple times to produce deeper indents.
+ /// </summary>
+ public void Indent()
+ {
+ indent.Append(" ");
+ }
+
+ /// <summary>
+ /// Reduces the current indent level by two spaces.
+ /// </summary>
+ public void Outdent()
+ {
+ if (indent.Length == 0)
+ {
+ throw new InvalidOperationException("Too many calls to Outdent()");
+ }
+ indent.Length -= 2;
+ }
+
+ public void WriteLine(string text)
+ {
+ Print(text);
+ Print("\n");
+ }
+
+ public void WriteLine(string format, params object[] args)
+ {
+ WriteLine(string.Format(format, args));
+ }
+
+ public void WriteLine()
+ {
+ WriteLine("");
+ }
+
+ /// <summary>
+ /// Prints the given text to the output stream, indenting at line boundaries.
+ /// </summary>
+ /// <param name="text"></param>
+ public void Print(string text)
+ {
+ int pos = 0;
+
+ for (int i = 0; i < text.Length; i++)
+ {
+ if (text[i] == '\n')
+ {
+ // Strip off the \n from what we write
+ Write(text.Substring(pos, i - pos));
+ Write(lineBreak);
+ pos = i + 1;
+ atStartOfLine = true;
+ }
+ }
+ Write(text.Substring(pos));
+ }
+
+ public void Write(string format, params object[] args)
+ {
+ Write(string.Format(format, args));
+ }
+
+ private void Write(string data)
+ {
+ if (data.Length == 0)
+ {
+ return;
+ }
+ if (atStartOfLine)
+ {
+ atStartOfLine = false;
+ writer.Write(indent);
+ }
+ writer.Write(data);
+ }
+ }
+}
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