/////////////////////////////////////////////////////////////////////////////
// Name:        jsonwriter.h
// Purpose:     the generator of JSON text from a JSON value
// Author:      Luciano Cattani
// Created:     2007/09/15
// RCS-ID:      $Id: jsonwriter.h,v 1.4 2008/03/03 19:05:45 luccat Exp $
// Copyright:   (c) 2007 Luciano Cattani
// Licence:     wxWidgets licence
/////////////////////////////////////////////////////////////////////////////

#include "pgAdmin3.h"


#if !defined( _WX_JSONWRITER_H )
#define _WX_JSONWRITER_H

#ifdef __GNUG__
//#pragma interface "jsonwriter.h"
#endif

// For compilers that support precompilation, includes "wx/wx.h".

#ifdef __BORLANDC__
#pragma hdrstop
#endif

// for all others, include the necessary headers (this file is usually all you
// need because it includes almost all "standard" wxWidgets headers)
#ifndef WX_PRECOMP
#include <wx/stream.h>
#include <wx/string.h>
#endif

#include "utils/json/json_defs.h"
#include "utils/json/jsonval.h"

enum {
    wxJSONWRITER_NONE = 0,
    wxJSONWRITER_STYLED = 1,
    wxJSONWRITER_WRITE_COMMENTS = 2,
    wxJSONWRITER_COMMENTS_BEFORE = 4,
    wxJSONWRITER_COMMENTS_AFTER = 8,
    wxJSONWRITER_SPLIT_STRING = 16,
    wxJSONWRITER_NO_LINEFEEDS = 32,
    wxJSONWRITER_ESCAPE_SOLIDUS = 64,
    wxJSONWRITER_MULTILINE_STRING = 128,
    wxJSONWRITER_RECOGNIZE_UNSIGNED = 256,
    wxJSONWRITER_TAB_INDENT = 512,
    wxJSONWRITER_NO_INDENTATION = 1024,
    wxJSONWRITER_NOUTF8_STREAM = 2048,
    wxJSONWRITER_MEMORYBUFF = 4096
};

// class declaration

class WXDLLIMPEXP_JSON wxJSONWriter
{
public:
    wxJSONWriter(int style = wxJSONWRITER_STYLED, int indent = 0, int step = 3);
    ~wxJSONWriter();

    void Write(const wxJSONValue& value, wxString& str);
    void Write(const wxJSONValue& value, wxOutputStream& os);
    void SetDoubleFmtString(const char* fmt);

protected:

    int  DoWrite(wxOutputStream& os, const wxJSONValue& value, const wxString* key, bool comma);
    int  WriteIndent(wxOutputStream& os);
    int  WriteIndent(wxOutputStream& os, int num);
    bool IsSpace(wxChar ch);
    bool IsPunctuation(wxChar ch);

    int  WriteString(wxOutputStream& os, const wxString& str);
    int  WriteStringValue(wxOutputStream& os, const wxString& str);
    int  WriteNullValue(wxOutputStream& os);
    int  WriteIntValue(wxOutputStream& os, const wxJSONValue& v);
    int  WriteUIntValue(wxOutputStream& os, const wxJSONValue& v);
    int  WriteBoolValue(wxOutputStream& os, const wxJSONValue& v);
    int  WriteDoubleValue(wxOutputStream& os, const wxJSONValue& v);
    int  WriteMemoryBuff(wxOutputStream& os, const wxMemoryBuffer& buff);

    int  WriteInvalid(wxOutputStream& os);
    int  WriteSeparator(wxOutputStream& os);

    int  WriteKey(wxOutputStream& os, const wxString& key);
    int  WriteComment(wxOutputStream& os, const wxJSONValue& value, bool indent);

    int  WriteError(const wxString& err);

private:
    //! The style flag is a combination of wxJSONWRITER_(something) constants.
    int   m_style;

    //! The initial indentation value, in number of spaces.
    int   m_indent;

    //! The indentation increment, in number of spaces.
    int   m_step;

    //! JSON value objects can be nested; this is the level of annidation (used internally).
    int   m_level;

    // The line number when printing JSON text output (not yet used)
    int   m_lineNo;

    // The column number when printing JSON text output
    int   m_colNo;

    // Flag used in ANSI mode that controls UTF-8 conversion
    bool  m_noUtf8;

    // The format string for printing doubles
    char* m_fmt;
};


#endif            // not defined _WX_JSONWRITER_H