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/*
* This file is a part of PikoTools
* and is distributed under the (new) BSD licence.
* Author: Tomasz Sowa <t.sowa@ttmath.org>
*/
/*
* Copyright (c) 2012-2021, Tomasz Sowa
* All rights reserved.
*
* 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 Tomasz Sowa nor the names of contributors to this
* project 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.
*/
#ifndef headerfile_picotools_space_jsonspaceparser
#define headerfile_picotools_space_jsonspaceparser
#include <fstream>
#include "space.h"
namespace pt
{
class SpaceParser
{
public:
/*
ctor -- setting default values (SetDefault() method)
*/
SpaceParser();
/*
setting the root space
*/
void SetSpace(Space * pspace);
void SetSpace(Space & pspace);
/*
setting options of the parser to the default values
utf8 etc.
*/
void SetDefault();
/*
status of parsing
*/
enum Status { ok, cant_open_file, syntax_error, no_space };
/*
the last status of parsing, set by Parse() methods
*/
Status status;
/*
main methods used to parse a JSON file
file_name is the path to a file
*/
Status ParseJSONFile(const char * file_name);
Status ParseJSONFile(const std::string & file_name);
Status ParseJSONFile(const wchar_t * file_name);
Status ParseJSONFile(const std::wstring & file_name);
/*
main methods used to parse a Space file
file_name is the path to a file
*/
Status ParseSpaceFile(const char * file_name);
Status ParseSpaceFile(const std::string & file_name);
Status ParseSpaceFile(const wchar_t * file_name);
Status ParseSpaceFile(const std::wstring & file_name);
/*
main methods used to parse
str - input string (either 8bit ascii or UTF-8 -- see UTF8() method)
*/
Status ParseJSON(const char * str);
Status ParseJSON(const std::string & str);
/*
main methods used to parse
here input string is always in unicode (wide characters)
*/
Status ParseJSON(const wchar_t * str);
Status ParseJSON(const std::wstring & str);
Status ParseSpace(const char * str);
Status ParseSpace(const std::string & str);
Status ParseSpace(const wchar_t * str);
Status ParseSpace(const std::wstring & str);
/*
* add two args Parse method
* Status Parse(const char * str, Space & output_space);
*
*/
/*
if true then empty values and lists, e.g:
option =
option2 = ()
will be omitted (not inserted to 'table')
default: false
*/
void SkipEmpty(bool skip);
/*
'\' character is used to escape other characters in a quoted string
so "some \t t\"ext" will produce "some t t"ext"
default: true
*/
void UseEscapeChar(bool escape);
/*
if true then the input file or string (char* or std::string) is treated as UTF-8
default true
the internal storage for strings is std::wstring so if you call UTF8(false) then
the characters of input string will be simple static_cast<> from char to wchar_t
*/
// rename to use_utf8(bool)
void UTF8(bool utf);
/*
*
* returns a number of a last parsed line
* can be used to obtain the line in which there was a syntax error
*
*/
int get_last_parsed_line();
private:
/*
current space set by SetSpace();
*/
Space * root_space;
/*
a number of a line in which there is a syntax_error
*/
int line;
/*
true if Parse() method was called
false if ParseString() was called
*/
bool reading_from_file;
/*
pointers to the current character
if ParseString() is in used
*/
const char * pchar_ascii;
const wchar_t * pchar_unicode;
/*
true if ParseString(wchar_t *) or ParseString(std::wstring&) was called
*/
bool reading_from_wchar_string;
/*
last read token
*/
std::wstring token;
/*
separator between a variable and a value, default: '='
*/
int separator;
/*
space starting character, default: '{'
*/
int space_start;
/*
space ending character, default: '}'
*/
int space_end;
/*
table starting character, default: '['
*/
int table_start;
/*
table ending character, default: ']'
*/
int table_end;
/*
option delimiter, default: ','
*/
int option_delimiter;
/*
last read char
or -1 if the end
*/
int lastc;
/*
true if the lastc was escaped (with a backslash)
we have to know if the last sequence was \" or just "
*/
bool char_was_escaped;
/*
current file
may it would be better to make a pointer?
if we parse only a string then there is no sense to have such an object
*/
std::ifstream file;
/*
if true then empty lists, e.g:
option =
option2 = ()
will be omitted (not inserted to 'table')
default: false
*/
bool skip_empty;
/*
input file is in UTF-8
default: true
*/
bool input_as_utf8;
/*
if true you can use an escape character '\' in quoted values
*/
bool use_escape_char;
/*
*
* if parsing_space is false then it means we are parsing JSON format
*
*
*/
bool parsing_space;
// new
void ParseRootSpace();
void Parse(Space * space, bool is_object_value, bool is_table_value);
void ParseSpace(Space * space);
void ParseTable(Space * space);
void ParseKeyValuePairs(Space * space);
void ParseValuesList(Space * space);
void ReadKey();
void ParseTextValue(Space * space);
void ParseIntegerValue(Space * space);
void ParseFloatingPointValue(Space * space);
bool is_alfa_numeric_char(int c);
void ReadTokenUntilDelimiter(std::wstring & token, int delimiter1, int delimiter2);
void ReadAlfaNumericToken(std::wstring & token);
void ReadStringValue(std::wstring & token, bool is_object_value, bool is_table_value);
bool is_integer_token();
bool is_floating_point_token();
void ReadSpaceFieldToken(std::wstring & token);
void ReadTokenQuoted(std::wstring & token);
void ReadMultilineTokenQuoted(std::wstring & token);
int ReadUTF8Char();
int ReadASCIIChar();
int ReadCharFromWcharString();
int ReadCharFromUTF8String();
int ReadCharFromAsciiString();
int ReadCharNoEscape();
int ReadChar();
bool IsWhite(int c);
void SkipLine();
void SkipWhite();
void TrimLastWhite(std::wstring & s);
//void Trim(std::wstring & s);
bool IsHexDigit(wchar_t c);
int HexToInt(wchar_t c);
void ReadUnicodeCodePoint();
};
} // namespace
#endif