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hOOt - full text search engine

, 22 Jun 2013
Smallest full text search engine (lucene replacement) built from scratch using inverted WAH bitmap index, highly compact storage, operating in database and document modes
hoot_v1.0-noexe.zip
hoot_v1.0.zip
fastJSON.dll
Hoot
Properties
SampleApp
newifilter
Properties
Settings.settings
hoot_v1.1-noexe.zip
hoot_v1.1.zip
fastJSON.dll
_svn
all-wcprops
entries
text-base
AssemblyInfo.cs.svn-base
_svn
all-wcprops
entries
text-base
ComHelper.cs.svn-base
FilterLoader.cs.svn-base
FilterReader.cs.svn-base
IFilter.cs.svn-base
Settings.settings
_svn
all-wcprops
entries
text-base
AssemblyInfo.cs.svn-base
Resources.Designer.cs.svn-base
Resources.resx.svn-base
Settings.Designer.cs.svn-base
Settings.settings.svn-base
hoot_v1.2-noexe.zip
hoot_v1.2.zip
fastJSON.dll
Settings.settings
hoot_v1.3-noexe.zip
hoot_v1.3.zip
fastJSON.dll
Settings.settings
hoot_v1.4-noexe.zip
hoot_v1.4.zip
fastJSON.dll
Settings.settings
hoot_v1.5-noexe.zip
hoot_v1.5.zip
fastJSON.dll
Settings.settings
hoot_v2.0.zip
fastJSON
MGIndex
Settings.settings
hoot_v2.1.zip
Settings.settings
hoot_v2.2.1.zip
.gitignore
Settings.settings
hoot_v2.2.zip
.gitignore
Settings.settings
sampleapp.exe_v2.2-noexe.zip
sampleapp.exe_v2.2.1-noexe.zip
sampleapp.exe_v2.2.1.zip
Hoot.dll
SampleApp.exe
sampleapp.exe_v2.2.zip
Hoot.dll
SampleApp.exe
sampleapp_exe-noexe.zip
sampleapp_exe.zip
fastJSON.dll
Hoot.dll
SampleApp.exe
sampleapp_exe_v1.1-noexe.zip
sampleapp_exe_v1.1.zip
fastJSON.dll
Hoot.dll
SampleApp.exe
sampleapp_exe_v1.2-noexe.zip
sampleapp_exe_v1.2.zip
fastJSON.dll
Hoot.dll
SampleApp.exe
sampleapp_exe_v1.3-noexe.zip
sampleapp_exe_v1.3.zip
fastJSON.dll
Hoot.dll
SampleApp.exe
sampleapp_exe_v1.4-noexe.zip
sampleapp_exe_v1.4.zip
fastJSON.dll
Hoot.dll
SampleApp.exe
sampleapp_exe_v1.5-noexe.zip
sampleapp_exe_v1.5.zip
fastJSON.dll
Hoot.dll
SampleApp.exe
sampleapp_exe_v2.0-noexe.zip
sampleapp_exe_v2.0.zip
Hoot.dll
SampleApp.exe
sampleapp_exe_v2.1-noexe.zip
sampleapp_exe_v2.1.zip
Hoot.dll
SampleApp.exe
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();
        }
    }
}

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

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About the Author

Mehdi Gholam
Architect
United Kingdom United Kingdom
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)

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