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libshared: Integrated JSON

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This commit is contained in:
Paul Beckingham 2016-06-25 17:27:57 -04:00
parent 806043f0ad
commit 8291e97e87
3 changed files with 4 additions and 631 deletions
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6
src/CMakeLists.txt
View file

@ -17,7 +17,6 @@ add_library (task CLI2.cpp CLI2.h
FS.cpp FS.h
Hooks.cpp Hooks.h
ISO8601.cpp ISO8601.h
JSON.cpp JSON.h
Lexer.cpp Lexer.h
Msg.cpp Msg.h
Nibbler.cpp Nibbler.h
@ -40,7 +39,10 @@ add_library (task CLI2.cpp CLI2.h
util.cpp util.h
wcwidth6.cpp)
add_library (libshared libshared/src/RX.cpp libshared/src/RX.h)
add_library (libshared libshared/src/JSON.cpp libshared/src/JSON.h
libshared/src/Pig.cpp libshared/src/Pig.h
libshared/src/RX.cpp libshared/src/RX.h
libshared/src/unicode.cpp libshared/src/unicode.h)
add_executable (task_executable main.cpp)
add_executable (calc_executable calc.cpp)

494
src/JSON.cpp
View file

@ -1,494 +0,0 @@
////////////////////////////////////////////////////////////////////////////////
//
// Copyright 2006 - 2016, Paul Beckingham, Federico Hernandez.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//
// http://www.opensource.org/licenses/mit-license.php
//
////////////////////////////////////////////////////////////////////////////////
#include <cmake.h>
#include <JSON.h>
#include <text.h>
#include <i18n.h>
#include <utf8.h>
const char *json_encode[] = {
"\x00", "\x01", "\x02", "\x03", "\x04", "\x05", "\x06", "\x07",
"\\b", "\\t", "\\n", "\x0b", "\\f", "\\r", "\x0e", "\x0f",
"\x10", "\x11", "\x12", "\x13", "\x14", "\x15", "\x16", "\x17",
"\x18", "\x19", "\x1a", "\x1b", "\x1c", "\x1d", "\x1e", "\x1f",
"\x20", "\x21", "\\\"", "\x23", "\x24", "\x25", "\x26", "\x27",
"\x28", "\x29", "\x2a", "\x2b", "\x2c", "\x2d", "\x2e", "\\/",
"\x30", "\x31", "\x32", "\x33", "\x34", "\x35", "\x36", "\x37",
"\x38", "\x39", "\x3a", "\x3b", "\x3c", "\x3d", "\x3e", "\x3f",
"\x40", "\x41", "\x42", "\x43", "\x44", "\x45", "\x46", "\x47",
"\x48", "\x49", "\x4a", "\x4b", "\x4c", "\x4d", "\x4e", "\x4f",
"\x50", "\x51", "\x52", "\x53", "\x54", "\x55", "\x56", "\x57",
"\x58", "\x59", "\x5a", "\x5b", "\\\\", "\x5d", "\x5e", "\x5f",
"\x60", "\x61", "\x62", "\x63", "\x64", "\x65", "\x66", "\x67",
"\x68", "\x69", "\x6a", "\x6b", "\x6c", "\x6d", "\x6e", "\x6f",
"\x70", "\x71", "\x72", "\x73", "\x74", "\x75", "\x76", "\x77",
"\x78", "\x79", "\x7a", "\x7b", "\x7c", "\x7d", "\x7e", "\x7f",
"\x80", "\x81", "\x82", "\x83", "\x84", "\x85", "\x86", "\x87",
"\x88", "\x89", "\x8a", "\x8b", "\x8c", "\x8d", "\x8e", "\x8f",
"\x90", "\x91", "\x92", "\x93", "\x94", "\x95", "\x96", "\x97",
"\x98", "\x99", "\x9a", "\x9b", "\x9c", "\x9d", "\x9e", "\x9f",
"\xa0", "\xa1", "\xa2", "\xa3", "\xa4", "\xa5", "\xa6", "\xa7",
"\xa8", "\xa9", "\xaa", "\xab", "\xac", "\xad", "\xae", "\xaf",
"\xb0", "\xb1", "\xb2", "\xb3", "\xb4", "\xb5", "\xb6", "\xb7",
"\xb8", "\xb9", "\xba", "\xbb", "\xbc", "\xbd", "\xbe", "\xbf",
"\xc0", "\xc1", "\xc2", "\xc3", "\xc4", "\xc5", "\xc6", "\xc7",
"\xc8", "\xc9", "\xca", "\xcb", "\xcc", "\xcd", "\xce", "\xcf",
"\xd0", "\xd1", "\xd2", "\xd3", "\xd4", "\xd5", "\xd6", "\xd7",
"\xd8", "\xd9", "\xda", "\xdb", "\xdc", "\xdd", "\xde", "\xdf",
"\xe0", "\xe1", "\xe2", "\xe3", "\xe4", "\xe5", "\xe6", "\xe7",
"\xe8", "\xe9", "\xea", "\xeb", "\xec", "\xed", "\xee", "\xef",
"\xf0", "\xf1", "\xf2", "\xf3", "\xf4", "\xf5", "\xf6", "\xf7",
"\xf8", "\xf9", "\xfa", "\xfb", "\xfc", "\xfd", "\xfe", "\xff"
};
////////////////////////////////////////////////////////////////////////////////
json::value* json::value::parse (Nibbler& nibbler)
{
json::value* v;
if ((v = json::object::parse (nibbler)) ||
(v = json::array::parse (nibbler)) ||
(v = json::string::parse (nibbler)) ||
(v = json::number::parse (nibbler)) ||
(v = json::literal::parse (nibbler)))
return v;
return NULL;
}
////////////////////////////////////////////////////////////////////////////////
json::jtype json::value::type ()
{
return json::j_value;
}
////////////////////////////////////////////////////////////////////////////////
std::string json::value::dump () const
{
return "<value>";
}
////////////////////////////////////////////////////////////////////////////////
json::string::string (const std::string& other)
{
_data = other;
}
////////////////////////////////////////////////////////////////////////////////
json::string* json::string::parse (Nibbler& nibbler)
{
std::string value;
if (nibbler.getQuoted ('"', value))
{
json::string* s = new json::string ();
s->_data = value;
return s;
}
return NULL;
}
////////////////////////////////////////////////////////////////////////////////
json::jtype json::string::type ()
{
return json::j_string;
}
////////////////////////////////////////////////////////////////////////////////
std::string json::string::dump () const
{
return std::string ("\"") + _data + "\"";
}
////////////////////////////////////////////////////////////////////////////////
json::number* json::number::parse (Nibbler& nibbler)
{
double d;
if (nibbler.getNumber (d))
{
json::number* s = new json::number ();
s->_dvalue = d;
return s;
}
return NULL;
}
////////////////////////////////////////////////////////////////////////////////
json::jtype json::number::type ()
{
return json::j_number;
}
////////////////////////////////////////////////////////////////////////////////
std::string json::number::dump () const
{
return format (_dvalue);
}
////////////////////////////////////////////////////////////////////////////////
json::number::operator double () const
{
return _dvalue;
}
////////////////////////////////////////////////////////////////////////////////
json::literal* json::literal::parse (Nibbler& nibbler)
{
if (nibbler.getLiteral ("null"))
{
json::literal* s = new json::literal ();
s->_lvalue = nullvalue;
return s;
}
else if (nibbler.getLiteral ("false"))
{
json::literal* s = new json::literal ();
s->_lvalue = falsevalue;
return s;
}
else if (nibbler.getLiteral ("true"))
{
json::literal* s = new json::literal ();
s->_lvalue = truevalue;
return s;
}
return NULL;
}
////////////////////////////////////////////////////////////////////////////////
json::jtype json::literal::type ()
{
return json::j_literal;
}
////////////////////////////////////////////////////////////////////////////////
std::string json::literal::dump () const
{
if (_lvalue == nullvalue) return "null";
else if (_lvalue == falsevalue) return "false";
else return "true";
}
////////////////////////////////////////////////////////////////////////////////
json::array::~array ()
{
for (auto& i : _data)
delete i;
}
////////////////////////////////////////////////////////////////////////////////
json::array* json::array::parse (Nibbler& nibbler)
{
Nibbler n (nibbler);
n.skipWS ();
if (n.skip ('['))
{
n.skipWS ();
json::array* arr = new json::array ();
json::value* value;
if ((value = json::value::parse (n)))
{
arr->_data.push_back (value);
value = NULL; // Not a leak. Looks like a leak.
n.skipWS ();
while (n.skip (','))
{
n.skipWS ();
if ((value = json::value::parse (n)))
{
arr->_data.push_back (value);
n.skipWS ();
}
else
{
delete arr;
throw format (STRING_JSON_MISSING_VALUE, (int) n.cursor ());
}
}
}
if (n.skip (']'))
{
nibbler = n;
return arr;
}
else
throw format (STRING_JSON_MISSING_BRACKET, (int) n.cursor ());
delete arr;
}
return NULL;
}
////////////////////////////////////////////////////////////////////////////////
json::jtype json::array::type ()
{
return json::j_array;
}
////////////////////////////////////////////////////////////////////////////////
std::string json::array::dump () const
{
std::string output;
output += "[";
for (auto i = _data.begin (); i != _data.end (); ++i)
{
if (i != _data.begin ())
output += ",";
output += (*i)->dump ();
}
output += "]";
return output;
}
////////////////////////////////////////////////////////////////////////////////
json::object::~object ()
{
for (auto& i : _data)
delete i.second;
}
////////////////////////////////////////////////////////////////////////////////
json::object* json::object::parse (Nibbler& nibbler)
{
Nibbler n (nibbler);
n.skipWS ();
if (n.skip ('{'))
{
n.skipWS ();
json::object* obj = new json::object ();
std::string name;
json::value* value;
if (json::object::parse_pair (n, name, value))
{
obj->_data.insert (std::pair <std::string, json::value*> (name, value));
value = NULL; // Not a leak. Looks like a leak.
n.skipWS ();
while (n.skip (','))
{
n.skipWS ();
if (json::object::parse_pair (n, name, value))
{
obj->_data.insert (std::pair <std::string, json::value*> (name, value));
n.skipWS ();
}
else
{
delete obj;
throw format (STRING_JSON_MISSING_VALUE, (int) n.cursor ());
}
}
}
if (n.skip ('}'))
{
nibbler = n;
return obj;
}
else
throw format (STRING_JSON_MISSING_BRACE, (int) n.cursor ());
delete obj;
}
return NULL;
}
////////////////////////////////////////////////////////////////////////////////
bool json::object::parse_pair (
Nibbler& nibbler,
std::string& name,
json::value*& val)
{
Nibbler n (nibbler);
if (n.getQuoted ('"', name))
{
n.skipWS ();
if (n.skip (':'))
{
n.skipWS ();
if ((val = json::value::parse (n)))
{
nibbler = n;
return true;
}
else
throw format (STRING_JSON_MISSING_VALUE2, (int) n.cursor ());
}
else
throw format (STRING_JSON_MISSING_COLON, (int) n.cursor ());
}
return false;
}
////////////////////////////////////////////////////////////////////////////////
json::jtype json::object::type ()
{
return json::j_object;
}
////////////////////////////////////////////////////////////////////////////////
std::string json::object::dump () const
{
std::string output;
output += "{";
for (auto i = _data.begin (); i != _data.end (); ++i)
{
if (i != _data.begin ())
output += ",";
output += "\"" + i->first + "\":";
output += i->second->dump ();
}
output += "}";
return output;
}
////////////////////////////////////////////////////////////////////////////////
json::value* json::parse (const std::string& input)
{
json::value* root = NULL;
Nibbler n (input);
n.skipWS ();
if (n.next () == '{') root = json::object::parse (n);
else if (n.next () == '[') root = json::array::parse (n);
else
throw format (STRING_JSON_MISSING_OPEN, (int) n.cursor ());
// Check for end condition.
n.skipWS ();
if (!n.depleted ())
{
delete root;
throw format (STRING_JSON_EXTRA_CHARACTERS, (int) n.cursor ());
}
return root;
}
////////////////////////////////////////////////////////////////////////////////
std::string json::encode (const std::string& input)
{
std::string output;
output.reserve ((input.size () * 6) / 5); // 20% increase.
auto last = input.begin ();
for (auto i = input.begin (); i != input.end (); ++i)
{
switch (*i)
{
// Simple translations.
case '"':
case '\\':
case '/':
case '\b':
case '\f':
case '\n':
case '\r':
case '\t':
output.append (last, i);
output += json_encode[(unsigned char)(*i)];
last = i + 1;
// Default NOP.
}
}
output.append (last, input.end ());
return output;
}
////////////////////////////////////////////////////////////////////////////////
std::string json::decode (const std::string& input)
{
std::string output;
output.reserve (input.size ()); // Same size.
size_t pos = 0;
while (pos < input.length ())
{
if (input[pos] == '\\')
{
++pos;
switch (input[pos])
{
// Simple translations.
case '"': output += '"'; break;
case '\\': output += '\\'; break;
case '/': output += '/'; break;
case 'b': output += '\b'; break;
case 'f': output += '\f'; break;
case 'n': output += '\n'; break;
case 'r': output += '\r'; break;
case 't': output += '\t'; break;
// Compose a UTF8 unicode character.
case 'u':
output += utf8_character (utf8_codepoint (input.substr (++pos)));
pos += 3;
break;
// If it is an unrecognized sequence, do nothing.
default:
output += '\\';
output += input[pos];
break;
}
++pos;
}
else
{
size_t next_backslash = input.find ('\\', pos);
output.append (input, pos, next_backslash - pos);
pos = next_backslash;
}
}
return output;
}
////////////////////////////////////////////////////////////////////////////////

135
src/JSON.h
View file

@ -1,135 +0,0 @@
////////////////////////////////////////////////////////////////////////////////
//
// Copyright 2006 - 2016, Paul Beckingham, Federico Hernandez.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//
// http://www.opensource.org/licenses/mit-license.php
//
////////////////////////////////////////////////////////////////////////////////
#ifndef INCLUDED_JSON
#define INCLUDED_JSON
#include <map>
#include <vector>
#include <string>
#include <Nibbler.h>
namespace json
{
enum jtype
{
j_value, // 0
j_object, // 1
j_array, // 2
j_string, // 3
j_number, // 4
j_literal // 5
};
class value
{
public:
value () {}
virtual ~value () {}
static value* parse (Nibbler&);
virtual jtype type ();
virtual std::string dump () const;
};
class string : public value
{
public:
string () {}
string (const std::string&);
~string () {}
static string* parse (Nibbler&);
jtype type ();
std::string dump () const;
public:
std::string _data;
};
class number : public value
{
public:
number () : _dvalue (0.0) {}
~number () {}
static number* parse (Nibbler&);
jtype type ();
std::string dump () const;
operator double () const;
public:
double _dvalue;
};
class literal : public value
{
public:
literal () : _lvalue (none) {}
~literal () {}
static literal* parse (Nibbler&);
jtype type ();
std::string dump () const;
public:
enum literal_value {none, nullvalue, falsevalue, truevalue};
literal_value _lvalue;
};
class array : public value
{
public:
array () {}
~array ();
static array* parse (Nibbler&);
jtype type ();
std::string dump () const;
public:
std::vector <value*> _data;
};
class object : public value
{
public:
object () {}
~object ();
static object* parse (Nibbler&);
static bool parse_pair (Nibbler&, std::string&, value*&);
jtype type ();
std::string dump () const;
public:
std::map <std::string, value*> _data;
};
// Parser entry point.
value* parse (const std::string&);
// Encode/decode for JSON entities.
std::string encode (const std::string&);
std::string decode (const std::string&);
}
#endif
////////////////////////////////////////////////////////////////////////////////