src/jsontestrunner/main.cpp - platform/external/jsoncpp - Git at Google

 // Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
 // Distributed under MIT license, or public domain if desired and
 // recognized in your jurisdiction.
 // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE

 #if defined(__GNUC__)
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #elif defined(_MSC_VER)
 #pragma warning(disable : 4996)
 #endif

 /* This executable is used for testing parser/writer using real JSON files.
  */

 #include <algorithm> // sort
 #include <cstdio>
 #include <iostream>
 #include <json/json.h>
 #include <memory>
 #include <sstream>

 struct Options {
   Json::String path;
   Json::Features features;
   bool parseOnly;
   using writeFuncType = Json::String (*)(Json::Value const&);
   writeFuncType write;
 };

 static Json::String normalizeFloatingPointStr(double value) {
   char buffer[32];
   jsoncpp_snprintf(buffer, sizeof(buffer), "%.16g", value);
   buffer[sizeof(buffer) - 1] = 0;
   Json::String s(buffer);
   Json::String::size_type index = s.find_last_of("eE");
   if (index != Json::String::npos) {
     Json::String::size_type hasSign =
         (s[index + 1] == '+' || s[index + 1] == '-') ? 1 : 0;
     Json::String::size_type exponentStartIndex = index + 1 + hasSign;
     Json::String normalized = s.substr(0, exponentStartIndex);
     Json::String::size_type indexDigit =
         s.find_first_not_of('0', exponentStartIndex);
     Json::String exponent = "0";
     if (indexDigit != Json::String::npos) // There is an exponent different
                                           // from 0
     {
       exponent = s.substr(indexDigit);
     }
     return normalized + exponent;
   }
   return s;
 }

 static Json::String readInputTestFile(const char* path) {
   FILE* file = fopen(path, "rb");
   if (!file)
     return "";
   fseek(file, 0, SEEK_END);
   auto const size = ftell(file);
   auto const usize = static_cast<size_t>(size);
   fseek(file, 0, SEEK_SET);
   auto buffer = new char[size + 1];
   buffer[size] = 0;
   Json::String text;
   if (fread(buffer, 1, usize, file) == usize)
     text = buffer;
   fclose(file);
   delete[] buffer;
   return text;
 }

 static void printValueTree(FILE* fout, Json::Value& value,
                            const Json::String& path = ".") {
   if (value.hasComment(Json::commentBefore)) {
     fprintf(fout, "%s\n", value.getComment(Json::commentBefore).c_str());
   }
   switch (value.type()) {
   case Json::nullValue:
     fprintf(fout, "%s=null\n", path.c_str());
     break;
   case Json::intValue:
     fprintf(fout, "%s=%s\n", path.c_str(),
             Json::valueToString(value.asLargestInt()).c_str());
     break;
   case Json::uintValue:
     fprintf(fout, "%s=%s\n", path.c_str(),
             Json::valueToString(value.asLargestUInt()).c_str());
     break;
   case Json::realValue:
     fprintf(fout, "%s=%s\n", path.c_str(),
             normalizeFloatingPointStr(value.asDouble()).c_str());
     break;
   case Json::stringValue:
     fprintf(fout, "%s=\"%s\"\n", path.c_str(), value.asString().c_str());
     break;
   case Json::booleanValue:
     fprintf(fout, "%s=%s\n", path.c_str(), value.asBool() ? "true" : "false");
     break;
   case Json::arrayValue: {
     fprintf(fout, "%s=[]\n", path.c_str());
     Json::ArrayIndex size = value.size();
     for (Json::ArrayIndex index = 0; index < size; ++index) {
       static char buffer[16];
       jsoncpp_snprintf(buffer, sizeof(buffer), "[%u]", index);
       printValueTree(fout, value[index], path + buffer);
     }
   } break;
   case Json::objectValue: {
     fprintf(fout, "%s={}\n", path.c_str());
     Json::Value::Members members(value.getMemberNames());
     std::sort(members.begin(), members.end());
     Json::String suffix = *(path.end() - 1) == '.' ? "" : ".";
     for (const auto& name : members) {
       printValueTree(fout, value[name], path + suffix + name);
     }
   } break;
   default:
     break;
   }

   if (value.hasComment(Json::commentAfter)) {
     fprintf(fout, "%s\n", value.getComment(Json::commentAfter).c_str());
   }
 }

 static int parseAndSaveValueTree(const Json::String& input,
                                  const Json::String& actual,
                                  const Json::String& kind,
                                  const Json::Features& features, bool parseOnly,
                                  Json::Value* root, bool use_legacy) {
   if (!use_legacy) {
     Json::CharReaderBuilder builder;

     builder.settings_["allowComments"] = features.allowComments_;
     builder.settings_["strictRoot"] = features.strictRoot_;
     builder.settings_["allowDroppedNullPlaceholders"] =
         features.allowDroppedNullPlaceholders_;
     builder.settings_["allowNumericKeys"] = features.allowNumericKeys_;

     std::unique_ptr<Json::CharReader> reader(builder.newCharReader());
     Json::String errors;
     const bool parsingSuccessful =
         reader->parse(input.data(), input.data() + input.size(), root, &errors);

     if (!parsingSuccessful) {
       std::cerr << "Failed to parse " << kind << " file: " << std::endl
                 << errors << std::endl;
       return 1;
     }

     // We may instead check the legacy implementation (to ensure it doesn't
     // randomly get broken).
   } else {
     Json::Reader reader(features);
     const bool parsingSuccessful =
         reader.parse(input.data(), input.data() + input.size(), *root);
     if (!parsingSuccessful) {
       std::cerr << "Failed to parse " << kind << " file: " << std::endl
                 << reader.getFormatedErrorMessages() << std::endl;
       return 1;
     }
   }

   if (!parseOnly) {
     FILE* factual = fopen(actual.c_str(), "wt");
     if (!factual) {
       std::cerr << "Failed to create '" << kind << "' actual file."
                 << std::endl;
       return 2;
     }
     printValueTree(factual, *root);
     fclose(factual);
   }
   return 0;
 }
 // static Json::String useFastWriter(Json::Value const& root) {
 //   Json::FastWriter writer;
 //   writer.enableYAMLCompatibility();
 //   return writer.write(root);
 // }
 static Json::String useStyledWriter(Json::Value const& root) {
   Json::StyledWriter writer;
   return writer.write(root);
 }
 static Json::String useStyledStreamWriter(Json::Value const& root) {
   Json::StyledStreamWriter writer;
   Json::OStringStream sout;
   writer.write(sout, root);
   return sout.str();
 }
 static Json::String useBuiltStyledStreamWriter(Json::Value const& root) {
   Json::StreamWriterBuilder builder;
   return Json::writeString(builder, root);
 }
 static int rewriteValueTree(const Json::String& rewritePath,
                             const Json::Value& root,
                             Options::writeFuncType write,
                             Json::String* rewrite) {
   *rewrite = write(root);
   FILE* fout = fopen(rewritePath.c_str(), "wt");
   if (!fout) {
     std::cerr << "Failed to create rewrite file: " << rewritePath << std::endl;
     return 2;
   }
   fprintf(fout, "%s\n", rewrite->c_str());
   fclose(fout);
   return 0;
 }

 static Json::String removeSuffix(const Json::String& path,
                                  const Json::String& extension) {
   if (extension.length() >= path.length())
     return Json::String("");
   Json::String suffix = path.substr(path.length() - extension.length());
   if (suffix != extension)
     return Json::String("");
   return path.substr(0, path.length() - extension.length());
 }

 static void printConfig() {
 // Print the configuration used to compile JsonCpp
 #if defined(JSON_NO_INT64)
   std::cout << "JSON_NO_INT64=1" << std::endl;
 #else
   std::cout << "JSON_NO_INT64=0" << std::endl;
 #endif
 }

 static int printUsage(const char* argv[]) {
   std::cout << "Usage: " << argv[0] << " [--strict] input-json-file"
             << std::endl;
   return 3;
 }

 static int parseCommandLine(int argc, const char* argv[], Options* opts) {
   opts->parseOnly = false;
   opts->write = &useStyledWriter;
   if (argc < 2) {
     return printUsage(argv);
   }
   int index = 1;
   if (Json::String(argv[index]) == "--json-checker") {
     opts->features = Json::Features::strictMode();
     opts->parseOnly = true;
     ++index;
   }
   if (Json::String(argv[index]) == "--json-config") {
     printConfig();
     return 3;
   }
   if (Json::String(argv[index]) == "--json-writer") {
     ++index;
     Json::String const writerName(argv[index++]);
     if (writerName == "StyledWriter") {
       opts->write = &useStyledWriter;
     } else if (writerName == "StyledStreamWriter") {
       opts->write = &useStyledStreamWriter;
     } else if (writerName == "BuiltStyledStreamWriter") {
       opts->write = &useBuiltStyledStreamWriter;
     } else {
       std::cerr << "Unknown '--json-writer' " << writerName << std::endl;
       return 4;
     }
   }
   if (index == argc || index + 1 < argc) {
     return printUsage(argv);
   }
   opts->path = argv[index];
   return 0;
 }

 static int runTest(Options const& opts, bool use_legacy) {
   int exitCode = 0;

   Json::String input = readInputTestFile(opts.path.c_str());
   if (input.empty()) {
     std::cerr << "Invalid input file: " << opts.path << std::endl;
     return 3;
   }

   Json::String basePath = removeSuffix(opts.path, ".json");
   if (!opts.parseOnly && basePath.empty()) {
     std::cerr << "Bad input path '" << opts.path
               << "'. Must end with '.expected'" << std::endl;
     return 3;
   }

   Json::String const actualPath = basePath + ".actual";
   Json::String const rewritePath = basePath + ".rewrite";
   Json::String const rewriteActualPath = basePath + ".actual-rewrite";

   Json::Value root;
   exitCode = parseAndSaveValueTree(input, actualPath, "input", opts.features,
                                    opts.parseOnly, &root, use_legacy);
   if (exitCode || opts.parseOnly) {
     return exitCode;
   }

   Json::String rewrite;
   exitCode = rewriteValueTree(rewritePath, root, opts.write, &rewrite);
   if (exitCode) {
     return exitCode;
   }

   Json::Value rewriteRoot;
   exitCode = parseAndSaveValueTree(rewrite, rewriteActualPath, "rewrite",
                                    opts.features, opts.parseOnly, &rewriteRoot,
                                    use_legacy);

   return exitCode;
 }

 int main(int argc, const char* argv[]) {
   Options opts;
   try {
     int exitCode = parseCommandLine(argc, argv, &opts);
     if (exitCode != 0) {
       std::cerr << "Failed to parse command-line." << std::endl;
       return exitCode;
     }

     const int modern_return_code = runTest(opts, false);
     if (modern_return_code) {
       return modern_return_code;
     }

     const std::string filename =
         opts.path.substr(opts.path.find_last_of("\\/") + 1);
     const bool should_run_legacy = (filename.rfind("legacy_", 0) == 0);
     if (should_run_legacy) {
       return runTest(opts, true);
     }
   } catch (const std::exception& e) {
     std::cerr << "Unhandled exception:" << std::endl << e.what() << std::endl;
     return 1;
   }
 }

 #if defined(__GNUC__)
 #pragma GCC diagnostic pop
 #endif
	// Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
	// Distributed under MIT license, or public domain if desired and
	// recognized in your jurisdiction.
	// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE

	#if defined(__GNUC__)
	#pragma GCC diagnostic push
	#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
	#elif defined(_MSC_VER)
	#pragma warning(disable : 4996)
	#endif

	/* This executable is used for testing parser/writer using real JSON files.
	*/

	#include <algorithm> // sort
	#include <cstdio>
	#include <iostream>
	#include <json/json.h>
	#include <memory>
	#include <sstream>

	struct Options {
	Json::String path;
	Json::Features features;
	bool parseOnly;
	using writeFuncType = Json::String (*)(Json::Value const&);
	writeFuncType write;
	};

	static Json::String normalizeFloatingPointStr(double value) {
	char buffer[32];
	jsoncpp_snprintf(buffer, sizeof(buffer), "%.16g", value);
	buffer[sizeof(buffer) - 1] = 0;
	Json::String s(buffer);
	Json::String::size_type index = s.find_last_of("eE");
	if (index != Json::String::npos) {
	Json::String::size_type hasSign =
	(s[index + 1] == '+' \|\| s[index + 1] == '-') ? 1 : 0;
	Json::String::size_type exponentStartIndex = index + 1 + hasSign;
	Json::String normalized = s.substr(0, exponentStartIndex);
	Json::String::size_type indexDigit =
	s.find_first_not_of('0', exponentStartIndex);
	Json::String exponent = "0";
	if (indexDigit != Json::String::npos) // There is an exponent different
	// from 0
	{
	exponent = s.substr(indexDigit);
	}
	return normalized + exponent;
	}
	return s;
	}

	static Json::String readInputTestFile(const char* path) {
	FILE* file = fopen(path, "rb");
	if (!file)
	return "";
	fseek(file, 0, SEEK_END);
	auto const size = ftell(file);
	auto const usize = static_cast<size_t>(size);
	fseek(file, 0, SEEK_SET);
	auto buffer = new char[size + 1];
	buffer[size] = 0;
	Json::String text;
	if (fread(buffer, 1, usize, file) == usize)
	text = buffer;
	fclose(file);
	delete[] buffer;
	return text;
	}

	static void printValueTree(FILE* fout, Json::Value& value,
	const Json::String& path = ".") {
	if (value.hasComment(Json::commentBefore)) {
	fprintf(fout, "%s\n", value.getComment(Json::commentBefore).c_str());
	}
	switch (value.type()) {
	case Json::nullValue:
	fprintf(fout, "%s=null\n", path.c_str());
	break;
	case Json::intValue:
	fprintf(fout, "%s=%s\n", path.c_str(),
	Json::valueToString(value.asLargestInt()).c_str());
	break;
	case Json::uintValue:
	fprintf(fout, "%s=%s\n", path.c_str(),
	Json::valueToString(value.asLargestUInt()).c_str());
	break;
	case Json::realValue:
	fprintf(fout, "%s=%s\n", path.c_str(),
	normalizeFloatingPointStr(value.asDouble()).c_str());
	break;
	case Json::stringValue:
	fprintf(fout, "%s=\"%s\"\n", path.c_str(), value.asString().c_str());
	break;
	case Json::booleanValue:
	fprintf(fout, "%s=%s\n", path.c_str(), value.asBool() ? "true" : "false");
	break;
	case Json::arrayValue: {
	fprintf(fout, "%s=[]\n", path.c_str());
	Json::ArrayIndex size = value.size();
	for (Json::ArrayIndex index = 0; index < size; ++index) {
	static char buffer[16];
	jsoncpp_snprintf(buffer, sizeof(buffer), "[%u]", index);
	printValueTree(fout, value[index], path + buffer);
	}
	} break;
	case Json::objectValue: {
	fprintf(fout, "%s={}\n", path.c_str());
	Json::Value::Members members(value.getMemberNames());
	std::sort(members.begin(), members.end());
	Json::String suffix = *(path.end() - 1) == '.' ? "" : ".";
	for (const auto& name : members) {
	printValueTree(fout, value[name], path + suffix + name);
	}
	} break;
	default:
	break;
	}

	if (value.hasComment(Json::commentAfter)) {
	fprintf(fout, "%s\n", value.getComment(Json::commentAfter).c_str());
	}
	}

	static int parseAndSaveValueTree(const Json::String& input,
	const Json::String& actual,
	const Json::String& kind,
	const Json::Features& features, bool parseOnly,
	Json::Value* root, bool use_legacy) {
	if (!use_legacy) {
	Json::CharReaderBuilder builder;

	builder.settings_["allowComments"] = features.allowComments_;
	builder.settings_["strictRoot"] = features.strictRoot_;
	builder.settings_["allowDroppedNullPlaceholders"] =
	features.allowDroppedNullPlaceholders_;
	builder.settings_["allowNumericKeys"] = features.allowNumericKeys_;

	std::unique_ptr<Json::CharReader> reader(builder.newCharReader());
	Json::String errors;
	const bool parsingSuccessful =
	reader->parse(input.data(), input.data() + input.size(), root, &errors);

	if (!parsingSuccessful) {
	std::cerr << "Failed to parse " << kind << " file: " << std::endl
	<< errors << std::endl;
	return 1;
	}

	// We may instead check the legacy implementation (to ensure it doesn't
	// randomly get broken).
	} else {
	Json::Reader reader(features);
	const bool parsingSuccessful =
	reader.parse(input.data(), input.data() + input.size(), *root);
	if (!parsingSuccessful) {
	std::cerr << "Failed to parse " << kind << " file: " << std::endl
	<< reader.getFormatedErrorMessages() << std::endl;
	return 1;
	}
	}

	if (!parseOnly) {
	FILE* factual = fopen(actual.c_str(), "wt");
	if (!factual) {
	std::cerr << "Failed to create '" << kind << "' actual file."
	<< std::endl;
	return 2;
	}
	printValueTree(factual, *root);
	fclose(factual);
	}
	return 0;
	}
	// static Json::String useFastWriter(Json::Value const& root) {
	// Json::FastWriter writer;
	// writer.enableYAMLCompatibility();
	// return writer.write(root);
	// }
	static Json::String useStyledWriter(Json::Value const& root) {
	Json::StyledWriter writer;
	return writer.write(root);
	}
	static Json::String useStyledStreamWriter(Json::Value const& root) {
	Json::StyledStreamWriter writer;
	Json::OStringStream sout;
	writer.write(sout, root);
	return sout.str();
	}
	static Json::String useBuiltStyledStreamWriter(Json::Value const& root) {
	Json::StreamWriterBuilder builder;
	return Json::writeString(builder, root);
	}
	static int rewriteValueTree(const Json::String& rewritePath,
	const Json::Value& root,
	Options::writeFuncType write,
	Json::String* rewrite) {
	*rewrite = write(root);
	FILE* fout = fopen(rewritePath.c_str(), "wt");
	if (!fout) {
	std::cerr << "Failed to create rewrite file: " << rewritePath << std::endl;
	return 2;
	}
	fprintf(fout, "%s\n", rewrite->c_str());
	fclose(fout);
	return 0;
	}

	static Json::String removeSuffix(const Json::String& path,
	const Json::String& extension) {
	if (extension.length() >= path.length())
	return Json::String("");
	Json::String suffix = path.substr(path.length() - extension.length());
	if (suffix != extension)
	return Json::String("");
	return path.substr(0, path.length() - extension.length());
	}

	static void printConfig() {
	// Print the configuration used to compile JsonCpp
	#if defined(JSON_NO_INT64)
	std::cout << "JSON_NO_INT64=1" << std::endl;
	#else
	std::cout << "JSON_NO_INT64=0" << std::endl;
	#endif
	}

	static int printUsage(const char* argv[]) {
	std::cout << "Usage: " << argv[0] << " [--strict] input-json-file"
	<< std::endl;
	return 3;
	}

	static int parseCommandLine(int argc, const char* argv[], Options* opts) {
	opts->parseOnly = false;
	opts->write = &useStyledWriter;
	if (argc < 2) {
	return printUsage(argv);
	}
	int index = 1;
	if (Json::String(argv[index]) == "--json-checker") {
	opts->features = Json::Features::strictMode();
	opts->parseOnly = true;
	++index;
	}
	if (Json::String(argv[index]) == "--json-config") {
	printConfig();
	return 3;
	}
	if (Json::String(argv[index]) == "--json-writer") {
	++index;
	Json::String const writerName(argv[index++]);
	if (writerName == "StyledWriter") {
	opts->write = &useStyledWriter;
	} else if (writerName == "StyledStreamWriter") {
	opts->write = &useStyledStreamWriter;
	} else if (writerName == "BuiltStyledStreamWriter") {
	opts->write = &useBuiltStyledStreamWriter;
	} else {
	std::cerr << "Unknown '--json-writer' " << writerName << std::endl;
	return 4;
	}
	}
	if (index == argc \|\| index + 1 < argc) {
	return printUsage(argv);
	}
	opts->path = argv[index];
	return 0;
	}

	static int runTest(Options const& opts, bool use_legacy) {
	int exitCode = 0;

	Json::String input = readInputTestFile(opts.path.c_str());
	if (input.empty()) {
	std::cerr << "Invalid input file: " << opts.path << std::endl;
	return 3;
	}

	Json::String basePath = removeSuffix(opts.path, ".json");
	if (!opts.parseOnly && basePath.empty()) {
	std::cerr << "Bad input path '" << opts.path
	<< "'. Must end with '.expected'" << std::endl;
	return 3;
	}

	Json::String const actualPath = basePath + ".actual";
	Json::String const rewritePath = basePath + ".rewrite";
	Json::String const rewriteActualPath = basePath + ".actual-rewrite";

	Json::Value root;
	exitCode = parseAndSaveValueTree(input, actualPath, "input", opts.features,
	opts.parseOnly, &root, use_legacy);
	if (exitCode \|\| opts.parseOnly) {
	return exitCode;
	}

	Json::String rewrite;
	exitCode = rewriteValueTree(rewritePath, root, opts.write, &rewrite);
	if (exitCode) {
	return exitCode;
	}

	Json::Value rewriteRoot;
	exitCode = parseAndSaveValueTree(rewrite, rewriteActualPath, "rewrite",
	opts.features, opts.parseOnly, &rewriteRoot,
	use_legacy);

	return exitCode;
	}

	int main(int argc, const char* argv[]) {
	Options opts;
	try {
	int exitCode = parseCommandLine(argc, argv, &opts);
	if (exitCode != 0) {
	std::cerr << "Failed to parse command-line." << std::endl;
	return exitCode;
	}

	const int modern_return_code = runTest(opts, false);
	if (modern_return_code) {
	return modern_return_code;
	}

	const std::string filename =
	opts.path.substr(opts.path.find_last_of("\\/") + 1);
	const bool should_run_legacy = (filename.rfind("legacy_", 0) == 0);
	if (should_run_legacy) {
	return runTest(opts, true);
	}
	} catch (const std::exception& e) {
	std::cerr << "Unhandled exception:" << std::endl << e.what() << std::endl;
	return 1;
	}
	}

	#if defined(__GNUC__)
	#pragma GCC diagnostic pop
	#endif