aboutsummaryrefslogtreecommitdiffstats
path: root/src/main.cpp
blob: 9f7969f96a4c5530a6f9a0a3351924686e5afa5f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
/*
 * Copyright (C) 2015, 2016 "IoT.bzh"
 * Author "Loïc Collignon" <loic.collignon@iot.bzh>
 * Author "Romain Forlot" <romain.forlot@iot.bzh>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *	 http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <unistd.h>
#include <stdlib.h>
#include <libgen.h>
#include <exception>
#include <fstream>
#include <iostream>
#include <string>
#include <numeric>
#include <iterator>
#include <json.hpp>
#include "openxc/message_set.hpp"

#define EXIT_SUCCESS				0
#define EXIT_UNKNOWN_ERROR			1
#define EXIT_COMMAND_LINE_ERROR		2
#define EXIT_PROGRAM_ERROR			3

template <typename T>
struct generator
{
	T v_;
	std::string line_prefix_;
	generator(T v, std::string line_prefix = "") : v_{v}, line_prefix_{line_prefix} {}
};

template <>
struct generator<openxc::signal>
{
	const openxc::signal& v_;
	std::uint32_t index_;
	std::string line_prefix_;
	generator(const openxc::signal& v, std::uint32_t index, std::string line_prefix = "")
		: v_{v}, index_{index}, line_prefix_{line_prefix}
	{
	}
};

template <typename T>
generator<T> gen(const T& v, std::string line_prefix = "") { return generator<T>(v, line_prefix); }

generator<openxc::signal> gen(const openxc::signal& v, std::uint32_t index, std::string line_prefix = "")
{
	return generator<openxc::signal>(v, index, line_prefix);
}

template <typename T>
std::ostream& operator<<(std::ostream& o, const generator<T>& v)
{
	o << v.line_prefix_ << v.v_;
	return o;
}

template <>
std::ostream& operator<<(std::ostream& o, const generator<bool>& v)
{
	o << v.line_prefix_ << (v.v_ ? "true" : "false");
	return o;
}

template <>
std::ostream& operator<<(std::ostream& o, const generator<float>& v)
{
	o << v.line_prefix_ << std::showpoint << v.v_ << "f";
	return o;
}

template <>
std::ostream& operator<<(std::ostream& o, const generator<std::string>& v)
{
	o << v.line_prefix_ << '\"' << v.v_ << '\"';
	return o;
}

template <typename T>
std::ostream& operator<<(std::ostream& o, const generator<std::vector<T>>& v)
{
//	o << v.line_prefix_;
	auto sz = v.v_.size();
	for(const T& i : v.v_)
	{
		o << gen(i, v.line_prefix_ + '\t');
		if (sz > 1) o << ",";
		--sz;
//		o << '\n';
	}
//	o << v.line_prefix_;
	return o;
}

template <>
std::ostream& operator<<(std::ostream& o, const generator<openxc::message_set>& v)
{
	o	<< v.line_prefix_
		<< "{std::make_shared<message_set_t>(message_set_t{"
		<< "0,"
		<< gen(v.v_.name()) << ",\n"
		<< "\t\t\t{ // beginning message_definition_ vector\n"
		<< gen(v.v_.messages(), "\t\t\t")
		<< "\n\t\t}, // end message_definition vector\n"
		<< "\t\t\t{ // beginning diagnostic_messages_ vector\n"
		<< gen(v.v_.diagnostic_messages(),"\t\t\t") << "\n"
		<< "\t\t\t} // end diagnostic_messages_ vector\n"
		<< "\t\t})} // end message_set entry\n";
	return o;
}

template <>
std::ostream& operator<<(std::ostream& o, const generator<std::map<std::string, std::vector<std::uint32_t>>>& v)
{
	o << v.line_prefix_ << "{\n";
	std::uint32_t c1 = (uint32_t)v.v_.size();
	for(const auto& state : v.v_)
	{
		std::uint32_t c2 = (uint32_t)state.second.size();
		for(const auto& i : state.second)
		{
			o << v.line_prefix_ << "\t" << "{" << i << "," << gen(state.first) << "}";
			if (c1 > 1 || c2 > 1) o << ',';
			o << '\n';
			--c2;
		}
		--c1;
	}
	o << v.line_prefix_ << "}";
	return o;
}

template <>
std::ostream& operator<<(std::ostream& o, const generator<openxc::signal>& v)
{
	o	<< v.line_prefix_ << "{std::make_shared<signal_t> (signal_t{\n"
		<< v.line_prefix_ << "\t" << gen(v.v_.generic_name()) << ",// generic_name\n"
		<< v.line_prefix_ << "\t" << v.v_.bit_position() << ",// bit_position\n"
		<< v.line_prefix_ << "\t" << v.v_.bit_size() << ",// bit_size\n"
		<< v.line_prefix_ << "\t" << gen(v.v_.factor()) << ",// factor\n"
		<< v.line_prefix_ << "\t" << gen(v.v_.offset()) << ",// offset\n"
		<< v.line_prefix_ << "\t" << "0,// min_value\n"
		<< v.line_prefix_ << "\t" << "0,// max_value\n"
		<< v.line_prefix_ << "\tfrequency_clock_t(" << gen(v.v_.max_frequency()) << "),// frequency\n"
		<< v.line_prefix_ << "\t" << gen(v.v_.send_same()) << ",// send_same\n"
		<< v.line_prefix_ << "\t" << gen(v.v_.force_send_changed()) << ",// force_send_changed\n"
		<< gen(v.v_.states(), v.line_prefix_ + '\t') << ",// states\n"
		<< v.line_prefix_ << '\t' << gen(v.v_.writable()) << ",// writable\n"
		<< v.line_prefix_ << '\t' << (v.v_.decoder().size() ? v.v_.decoder() : v.v_.states().size() ? "decoder_t::decode_state" : "nullptr") << ",// decoder\n"
		<< v.line_prefix_ << '\t' << (v.v_.encoder().size() ? v.v_.encoder() : "nullptr") << ",// encoder\n"
		<< v.line_prefix_ << '\t' << "false,// received\n";
		std::string multi_first = "";
		if(v.v_.multiplex().first){
			multi_first = "true";
		}else{
			multi_first = "false";
		}
		std::string multi = "std::make_pair<bool, int>(" + multi_first + ", " + std::to_string(v.v_.multiplex().second) + ")";
	o	<< v.line_prefix_ << '\t' << multi << ",// multiplex\n"
		<< v.line_prefix_ << '\t' << v.v_.is_big_endian() << ",// is_big_endian\n"
		<< v.line_prefix_ << '\t' << v.v_.is_signed() << ",// is_signed\n"
		<< v.line_prefix_ << "\t" << gen(v.v_.unit()) << "// unit\n"
		<< v.line_prefix_ << "})}";
	return o;
}

template <>
std::ostream& operator<<(std::ostream& o, const generator<openxc::can_message>& v)
{
	o	<< v.line_prefix_
		<< "{std::make_shared<message_definition_t>(message_definition_t{"
		<< gen(v.v_.bus()) << ","
		<< v.v_.id() << ","
		<< "\"" << v.v_.name() << "\","
		<< v.v_.length() << ","
		<< gen(v.v_.is_fd()) << ",";
		if(v.v_.is_j1939()){
			o << "message_format_t::J1939,";
		}
		else if(v.v_.is_extended())
		{
			o << "message_format_t::EXTENDED,";
		}
		else{
			o << "message_format_t::STANDARD,";
		}
	o	<< "frequency_clock_t(" << gen(v.v_.max_frequency()) << "),"
		<< gen(v.v_.force_send_changed()) << ",";
		std::uint32_t index = 0;
	o	<< "\n\t\t\t\t\t{ // beginning signals vector\n";
			std::uint32_t signal_count = (uint32_t)v.v_.signals().size();
			for(const openxc::signal& s : v.v_.signals())
			{
	o			<< gen(s, index,"\t\t\t\t\t\t");
				if (signal_count > 1) o << ',';
				--signal_count;
	o			<< '\n';
			}
	o	<< "\t\t\t\t\t} // end signals vector\n"
		<< "\t\t\t\t})} // end message_definition entry\n";
	return o;
}

template <>
std::ostream& operator<<(std::ostream& o, const generator<openxc::diagnostic_message>& v)
{
	o	<< v.line_prefix_ << "{std::make_shared<diagnostic_message_t>(diagnostic_message_t{\n"
		<< v.line_prefix_ << "\t" << v.v_.pid() << ",\n"
		<< v.line_prefix_ << "\t" << gen(v.v_.name()) << ",\n"
		<< v.line_prefix_ << "\t" << 0 << ",\n"
		<< v.line_prefix_ << "\t" << 0 << ",\n"
		<< v.line_prefix_ << "\t" << "UNIT::INVALID" << ",\n"
		<< v.line_prefix_ << "\t" << gen(v.v_.frequency()) << ",\n"
		<< v.line_prefix_ << "\t" << (v.v_.decoder().size() ? v.v_.decoder() : "nullptr") << ",\n"
		<< v.line_prefix_ << "\t" << (v.v_.callback().size() ? v.v_.callback() : "nullptr") << ",\n"
		<< v.line_prefix_ << "\t" << "true" << ",\n"
		<< v.line_prefix_ << "\t" << "false" << "\n"
		<< v.line_prefix_ << "})}\n";
	return o;
}

/// @brief Generate the application code.
/// @param[in] header Content to be inserted as a header.
/// @param[in] footer Content to be inserted as a footer.
/// @param[in] message_set application read from the json file.
/// @param[in] out Stream to write on.
void generate(const std::string& header, const std::string& footer, const openxc::message_set& message_set, std::ostream& out)
{
	out << "#include \"application.hpp\"\n"
		<< "#include \"../can/can-decoder.hpp\"\n"
		<< "#include \"../can/can-encoder.hpp\"\n\n";

	if (header.size()) out << header << "\n";

	out	<< "application_t::application_t()\n"
		<< "	: can_bus_manager_{utils::config_parser_t{\"/etc/dev-mapping.conf\"}}\n"
		<< "	, message_set_{\n"
		<< gen(message_set, "\t\t")
		<< "\t} // end message_set vector\n"
		<< "{\n"
		<< "	for(std::shared_ptr<message_set_t> cms: message_set_)\n"
		<< "	{\n"
		<< "		std::vector<std::shared_ptr<message_definition_t>> messages_definition = cms->get_messages_definition();\n"
		<< "		for(std::shared_ptr<message_definition_t> cmd : messages_definition)\n"
		<< "		{\n"
		<< "			cmd->set_parent(cms);\n"
		<< "			std::vector<std::shared_ptr<signal_t>> signals = cmd->get_signals();\n"
		<< "			for(std::shared_ptr<signal_t> sig: signals)\n"
		<< "			{\n"
		<< "				sig->set_parent(cmd);\n"
		<< "			}\n"
		<< "		}\n\n"
		<< "		std::vector<std::shared_ptr<diagnostic_message_t>> diagnostic_messages = cms->get_diagnostic_messages();\n"
		<< "		for(std::shared_ptr<diagnostic_message_t> dm : diagnostic_messages)\n"
		<< "		{\n"
		<< "			dm->set_parent(cms);\n"
		<< "		}\n"
		<< "	}\n"
		<< "		}\n\n"
		<< "const std::string application_t::get_diagnostic_bus() const\n"
		<< "{\n";

		std::string active_bus = "";
		for (const auto& d : message_set.diagnostic_messages())
		{
			if (d.bus().size() == 0) std::cerr << "ERROR: The bus name should be set for each diagnostic message." << std::endl;
			if (active_bus.size() == 0) active_bus = d.bus();
			if (active_bus != d.bus()) std::cerr << "ERROR: The bus name should be the same for each diagnostic message." << std::endl;
		}

	out	<< "\treturn " << gen(active_bus) << ";\n"
		<< "}\n\n";
	out	<< footer << std::endl;
}

/// @brief Read whole file content to a string.
/// @param[in] file Path to the file.
/// @return A std::string which contains the file content. If @c file is an empty string, the return value is also empty.
/// @exception std::runtime_error Throw this exception if the specified file is not found or cannot be opened.
std::string read_file(const std::string& file)
{
	if(file.size() == 0) return std::string();

	std::string content;
	std::ifstream stream(file);
	if (stream)
	{
		stream.seekg(0, std::ios::end);
		content.reserve(stream.tellg());
		stream.seekg(0, std::ios::beg);
		content.assign((std::istreambuf_iterator<char>(stream)), std::istreambuf_iterator<char>());
		return content;
	}
	std::stringstream ss;
	ss << "The specified file (" << file << ") is not found!";
	throw std::runtime_error(ss.str());
}

/// @brief Read whole file content as a json document.
/// @param[in] file Path to the file.
/// @return A @c nlohmann::json object.
/// @exception std::runtime_error Throw this exception if the specified file is not found or cannot be opened.
nlohmann::json read_json(const std::string& file)
{
	std::ifstream stream(file);
	if (stream)
	{
		nlohmann::json result;
		stream >> result;
		return result;
	}
	std::stringstream ss;
	ss << "The specified file (" << file << ") is not found!";
	throw std::runtime_error(ss.str());
}

// function that show the help information
void showhelpinfo(char *s)
{
std::cout<<"Usage:   "<<s<<" <-m inpout.json> [-o application-generated.cpp]"<< std::endl;
std::cout<<"option:  "<<"-m  input.json : JSON file describing CAN messages and signals"<< std::endl;
std::cout<<"         "<<"-h header.cpp : header source file insert at the beginning of generated file"<< std::endl;
std::cout<<"         "<<"-f footer.cpp : footer source file append to generated file."<< std::endl;
std::cout<<"         "<<"-o application-generated.cpp : output source file. Name has to be application-generated.cpp"<< std::endl;
}

/// @brief Entry point.
/// @param[in] argc Argument's count.
/// @param[in] argv Argument's array.
/// @return Exit code, zero if success.
int main(int argc, char *argv[])
{
	try
	{
		std::string appName = argv[0];
		std::string message_set_file;
		std::string output_file;
		std::string header_file;
		std::string footer_file;

		char tmp;
		/*if the program is ran witout options ,it will show the usgage and exit*/
		if(argc == 1)
		{
			showhelpinfo(argv[0]);
			exit(1);
		}
		/*use function getopt to get the arguments with option."hu:p:s:v" indicate
		that option h,v are the options without arguments while u,p,s are the
		options with arguments*/
		while((tmp=(char)getopt(argc,argv,"m:h:f:o:"))!=-1)
		{
			switch(tmp)
			{
			case 'h':
				header_file = optarg;
				break;
			case 'f':
				footer_file = optarg;
				break;
			case 'm':
				message_set_file = optarg;
				break;
			case 'o':
				output_file = optarg;
				break;
			default:
				showhelpinfo(argv[0]);
			break;
			}
		}

		std::stringstream header;
		header << read_file(header_file);

		std::string footer = read_file(footer_file);
		openxc::message_set message_set;
		message_set.from_json(read_json(message_set_file));

		std::string message_set_path = dirname(strdup(message_set_file.c_str()));
		for(const auto& s : message_set.extra_sources())
		{
			std::string extra_source = s;
			extra_source = message_set_path + "/" + extra_source;
			header << "\n// >>>>> " << s << " >>>>>\n" << read_file(extra_source) << "\n// <<<<< " << s << " <<<<<\n";
		}

		std::ofstream out;
		if (output_file.size())
		{
			out.open(output_file);
			if(!out)
			{
				std::stringstream ss;
				ss << "Can't open the ouput file (" << output_file << ") for writing!";
				throw std::runtime_error(ss.str());
			}
		}
		generate(header.str(), footer, message_set, output_file.size() ? out : std::cout);
	}
	catch (std::exception& e)
	{
		std::cerr << "ERROR: Unhandled exception - " << e.what() << std::endl;
		return EXIT_UNKNOWN_ERROR;
	}
	return EXIT_SUCCESS;
}