Downloads: fastJSON - CodeProject

using System.Collections.Generic;
using System.Text;

namespace fastJSON
{
    internal static class Formatter
    {
        public static string Indent = "    ";

        public static void AppendIndent(StringBuilder sb, int count)
        {
            for (; count > 0; --count) sb.Append(Indent);
        }

        public static bool IsEscaped(StringBuilder sb, int index)
        {
            bool escaped = false;
            while (index > 0 && sb[--index] == '\\') escaped = !escaped;
            return escaped;
        }

        public static string PrettyPrint(string input)
        {
            var output = new StringBuilder(input.Length * 2);
            char? quote = null;
            int depth = 0;

            for (int i = 0; i < input.Length; ++i)
            {
                char ch = input[i];

                switch (ch)
                {
                    case '{':
                    case '[':
                        output.Append(ch);
                        if (!quote.HasValue)
                        {
                            output.AppendLine();
                            AppendIndent(output, ++depth);
                        }
                        break;
                    case '}':
                    case ']':
                        if (quote.HasValue)
                            output.Append(ch);
                        else
                        {
                            output.AppendLine();
                            AppendIndent(output, --depth);
                            output.Append(ch);
                        }
                        break;
                    case '"':
                    case '\'':
                        output.Append(ch);
                        if (quote.HasValue)
                        {
                            if (!IsEscaped(output, i))
                                quote = null;
                        }
                        else quote = ch;
                        break;
                    case ',':
                        output.Append(ch);
                        if (!quote.HasValue)
                        {
                            output.AppendLine();
                            AppendIndent(output, depth);
                        }
                        break;
                    case ':':
                        if (quote.HasValue) output.Append(ch);
                        else output.Append(" : ");
                        break;
                    default:
                        if (quote.HasValue || !char.IsWhiteSpace(ch))
                            output.Append(ch);
                        break;
                }
            }

            return output.ToString();
        }
    }
}

By viewing downloads associated with this article you agree to the Terms of use and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author

Mehdi Gholam

Architect

United Kingdom

Member

Mehdi first started programming when he was 8 on BBC+128k machine in 6512 processor language, after various hardware and software changes he eventually came across .net and c# which he has been using since v1.0.
He is formally educated as a system analyst Industrial engineer, but his programming passion continues.

* Mehdi is the 5th person to get 6 out of 7 Platinums on CodeProject (13th Jan'12)

Smallest, fastest polymorphic JSON serializer (with Silverlight4 and MonoDroid support)

Type	Article
Licence	CPOL
First Posted	19 Feb 2011
Views	1,562,642
Downloads	25,920
Bookmarked	463 times

C#.NETIntermediate
Advanced

		9,891,582 members (30,898 online) Visit CodeProject.TV Discuss CodeProject.TV Sign in Email Password Forgot your password? Sign in using