mirror of
https://github.com/levinsv/pgadmin3.git
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148 lines
4.4 KiB
C++
148 lines
4.4 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: jsonreader.h
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// Purpose: the parser of JSON text
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// Author: Luciano Cattani
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// Created: 2007/09/15
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// RCS-ID: $Id: jsonreader.h,v 1.3 2008/03/03 19:05:45 luccat Exp $
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// Copyright: (c) 2007 Luciano Cattani
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// Licence: wxWidgets licence
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/////////////////////////////////////////////////////////////////////////////
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#include "pgAdmin3.h"
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#if !defined( _WX_JSONREADER_H )
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#define _WX_JSONREADER_H
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#ifdef __GNUG__
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#pragma interface "jsonreader.h"
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#endif
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// For compilers that support precompilation, includes "wx/wx.h".
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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// for all others, include the necessary headers (this file is usually all you
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// need because it includes almost all "standard" wxWidgets headers)
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#ifndef WX_PRECOMP
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#include <wx/stream.h>
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#include <wx/string.h>
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#include <wx/arrstr.h>
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#endif
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// The flags of the parser
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enum {
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wxJSONREADER_STRICT = 0,
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wxJSONREADER_ALLOW_COMMENTS = 1,
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wxJSONREADER_STORE_COMMENTS = 2,
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wxJSONREADER_CASE = 4,
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wxJSONREADER_MISSING = 8,
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wxJSONREADER_MULTISTRING = 16,
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wxJSONREADER_COMMENTS_AFTER = 32,
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wxJSONREADER_NOUTF8_STREAM = 64,
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wxJSONREADER_MEMORYBUFF = 128,
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wxJSONREADER_TOLERANT = wxJSONREADER_ALLOW_COMMENTS | wxJSONREADER_CASE |
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wxJSONREADER_MISSING | wxJSONREADER_MULTISTRING,
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wxJSONREADER_COMMENTS_BEFORE = wxJSONREADER_ALLOW_COMMENTS | wxJSONREADER_STORE_COMMENTS
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};
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class WXDLLIMPEXP_JSON wxJSONReader
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{
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public:
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wxJSONReader(int flags = wxJSONREADER_TOLERANT, int maxErrors = 30);
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virtual ~wxJSONReader();
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int Parse(const wxString& doc, wxJSONValue* val);
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int Parse(wxInputStream& doc, wxJSONValue* val);
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int GetDepth() const;
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int GetErrorCount() const;
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int GetWarningCount() const;
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const wxArrayString& GetErrors() const;
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const wxArrayString& GetWarnings() const;
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static int UTF8NumBytes(char ch);
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#if defined( wxJSON_64BIT_INT )
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static bool Strtoll(const wxString& str, wxInt64* i64);
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static bool Strtoull(const wxString& str, wxUint64* ui64);
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static bool DoStrto_ll(const wxString& str, wxUint64* ui64, wxChar* sign);
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#endif
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protected:
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int DoRead(wxInputStream& doc, wxJSONValue& val);
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void AddError(const wxString& descr);
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void AddError(const wxString& fmt, const wxString& str);
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void AddError(const wxString& fmt, wxChar ch);
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void AddWarning(int type, const wxString& descr);
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int GetStart(wxInputStream& is);
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int ReadChar(wxInputStream& is);
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int PeekChar(wxInputStream& is);
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void StoreValue(int ch, const wxString& key, wxJSONValue& value, wxJSONValue& parent);
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int SkipWhiteSpace(wxInputStream& is);
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int SkipComment(wxInputStream& is);
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void StoreComment(const wxJSONValue* parent);
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int ReadString(wxInputStream& is, wxJSONValue& val);
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int ReadToken(wxInputStream& is, int ch, wxString& s);
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int ReadValue(wxInputStream& is, int ch, wxJSONValue& val);
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int ReadUES(wxInputStream& is, char* uesBuffer);
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int AppendUES(wxMemoryBuffer& utf8Buff, const char* uesBuffer);
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int NumBytes(char ch);
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int ConvertCharByChar(wxString& s, const wxMemoryBuffer& utf8Buffer);
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int ReadMemoryBuff(wxInputStream& is, wxJSONValue& val);
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//! Flag that control the parser behaviour,
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int m_flags;
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//! Maximum number of errors stored in the error's array
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int m_maxErrors;
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//! The current line number (start at 1).
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int m_lineNo;
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//! The current column number (start at 1).
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int m_colNo;
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//! The current level of object/array annidation (start at ZERO).
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int m_level;
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//! The depth level of the read JSON text
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int m_depth;
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//! The pointer to the value object that is being read.
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wxJSONValue* m_current;
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//! The pointer to the value object that was last stored.
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wxJSONValue* m_lastStored;
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//! The pointer to the value object that will be read.
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wxJSONValue* m_next;
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//! The comment string read by SkipComment().
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wxString m_comment;
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//! The starting line of the comment string.
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int m_commentLine;
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//! The array of error messages.
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wxArrayString m_errors;
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//! The array of warning messages.
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wxArrayString m_warnings;
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//! The character read by the PeekChar() function (-1 none)
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int m_peekChar;
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//! ANSI: do not convert UTF-8 strings
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bool m_noUtf8;
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};
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#endif // not defined _WX_JSONREADER_H
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