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326 lines (309 loc) · 9.4 KB
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// Copyright 2007-2010 Baptiste Lepilleur
// 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
/* This executable is used for testing parser/writer using real JSON files.
*/
#include <json/json.h>
#include <algorithm> // sort
#include <sstream>
#include <stdio.h>
#if defined(_MSC_VER) && _MSC_VER >= 1310
#pragma warning(disable : 4996) // disable fopen deprecation warning
#endif
struct Options
{
JSONCPP_STRING path;
Json::Features features;
bool parseOnly;
typedef JSONCPP_STRING (*writeFuncType)(Json::Value const&);
writeFuncType write;
};
static JSONCPP_STRING normalizeFloatingPointStr(double value) {
char buffer[32];
#if defined(_MSC_VER) && defined(__STDC_SECURE_LIB__)
sprintf_s(buffer, sizeof(buffer), "%.16g", value);
#else
snprintf(buffer, sizeof(buffer), "%.16g", value);
#endif
buffer[sizeof(buffer) - 1] = 0;
JSONCPP_STRING s(buffer);
JSONCPP_STRING::size_type index = s.find_last_of("eE");
if (index != JSONCPP_STRING::npos) {
JSONCPP_STRING::size_type hasSign =
(s[index + 1] == '+' || s[index + 1] == '-') ? 1 : 0;
JSONCPP_STRING::size_type exponentStartIndex = index + 1 + hasSign;
JSONCPP_STRING normalized = s.substr(0, exponentStartIndex);
JSONCPP_STRING::size_type indexDigit =
s.find_first_not_of('0', exponentStartIndex);
JSONCPP_STRING exponent = "0";
if (indexDigit !=
JSONCPP_STRING::npos) // There is an exponent different from 0
{
exponent = s.substr(indexDigit);
}
return normalized + exponent;
}
return s;
}
static JSONCPP_STRING readInputTestFile(const char* path) {
FILE* file = fopen(path, "rb");
if (!file)
return JSONCPP_STRING("");
fseek(file, 0, SEEK_END);
long const size = ftell(file);
unsigned long const usize = static_cast<unsigned long>(size);
fseek(file, 0, SEEK_SET);
JSONCPP_STRING text;
char* buffer = new char[size + 1];
buffer[size] = 0;
if (fread(buffer, 1, usize, file) == usize)
text = buffer;
fclose(file);
delete[] buffer;
return text;
}
static void
printValueTree(FILE* fout, Json::Value& value, const JSONCPP_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];
#if defined(_MSC_VER) && defined(__STDC_SECURE_LIB__)
sprintf_s(buffer, sizeof(buffer), "[%d]", index);
#else
snprintf(buffer, sizeof(buffer), "[%d]", index);
#endif
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());
JSONCPP_STRING suffix = *(path.end() - 1) == '.' ? "" : ".";
for (Json::Value::Members::iterator it = members.begin();
it != members.end();
++it) {
const JSONCPP_STRING name = *it;
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 JSONCPP_STRING& input,
const JSONCPP_STRING& actual,
const JSONCPP_STRING& kind,
const Json::Features& features,
bool parseOnly,
Json::Value* root)
{
Json::Reader reader(features);
bool parsingSuccessful = reader.parse(input.data(), input.data() + input.size(), *root);
if (!parsingSuccessful) {
printf("Failed to parse %s file: \n%s\n",
kind.c_str(),
reader.getFormattedErrorMessages().c_str());
return 1;
}
if (!parseOnly) {
FILE* factual = fopen(actual.c_str(), "wt");
if (!factual) {
printf("Failed to create %s actual file.\n", kind.c_str());
return 2;
}
printValueTree(factual, *root);
fclose(factual);
}
return 0;
}
// static JSONCPP_STRING useFastWriter(Json::Value const& root) {
// Json::FastWriter writer;
// writer.enableYAMLCompatibility();
// return writer.write(root);
// }
static JSONCPP_STRING useStyledWriter(
Json::Value const& root)
{
Json::StyledWriter writer;
return writer.write(root);
}
static JSONCPP_STRING useStyledStreamWriter(
Json::Value const& root)
{
Json::StyledStreamWriter writer;
JSONCPP_OSTRINGSTREAM sout;
writer.write(sout, root);
return sout.str();
}
static JSONCPP_STRING useBuiltStyledStreamWriter(
Json::Value const& root)
{
Json::StreamWriterBuilder builder;
return Json::writeString(builder, root);
}
static int rewriteValueTree(
const JSONCPP_STRING& rewritePath,
const Json::Value& root,
Options::writeFuncType write,
JSONCPP_STRING* rewrite)
{
*rewrite = write(root);
FILE* fout = fopen(rewritePath.c_str(), "wt");
if (!fout) {
printf("Failed to create rewrite file: %s\n", rewritePath.c_str());
return 2;
}
fprintf(fout, "%s\n", rewrite->c_str());
fclose(fout);
return 0;
}
static JSONCPP_STRING removeSuffix(const JSONCPP_STRING& path,
const JSONCPP_STRING& extension) {
if (extension.length() >= path.length())
return JSONCPP_STRING("");
JSONCPP_STRING suffix = path.substr(path.length() - extension.length());
if (suffix != extension)
return JSONCPP_STRING("");
return path.substr(0, path.length() - extension.length());
}
static void printConfig() {
// Print the configuration used to compile JsonCpp
#if defined(JSON_NO_INT64)
printf("JSON_NO_INT64=1\n");
#else
printf("JSON_NO_INT64=0\n");
#endif
}
static int printUsage(const char* argv[]) {
printf("Usage: %s [--strict] input-json-file", argv[0]);
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 (JSONCPP_STRING(argv[index]) == "--json-checker") {
opts->features = Json::Features::strictMode();
opts->parseOnly = true;
++index;
}
if (JSONCPP_STRING(argv[index]) == "--json-config") {
printConfig();
return 3;
}
if (JSONCPP_STRING(argv[index]) == "--json-writer") {
++index;
JSONCPP_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 {
printf("Unknown '--json-writer %s'\n", writerName.c_str());
return 4;
}
}
if (index == argc || index + 1 < argc) {
return printUsage(argv);
}
opts->path = argv[index];
return 0;
}
static int runTest(Options const& opts)
{
int exitCode = 0;
JSONCPP_STRING input = readInputTestFile(opts.path.c_str());
if (input.empty()) {
printf("Failed to read input or empty input: %s\n", opts.path.c_str());
return 3;
}
JSONCPP_STRING basePath = removeSuffix(opts.path, ".json");
if (!opts.parseOnly && basePath.empty()) {
printf("Bad input path. Path does not end with '.expected':\n%s\n",
opts.path.c_str());
return 3;
}
JSONCPP_STRING const actualPath = basePath + ".actual";
JSONCPP_STRING const rewritePath = basePath + ".rewrite";
JSONCPP_STRING const rewriteActualPath = basePath + ".actual-rewrite";
Json::Value root;
exitCode = parseAndSaveValueTree(
input, actualPath, "input",
opts.features, opts.parseOnly, &root);
if (exitCode || opts.parseOnly) {
return exitCode;
}
JSONCPP_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);
if (exitCode) {
return exitCode;
}
return 0;
}
int main(int argc, const char* argv[]) {
Options opts;
try {
int exitCode = parseCommandLine(argc, argv, &opts);
if (exitCode != 0) {
printf("Failed to parse command-line.");
return exitCode;
}
return runTest(opts);
}
catch (const std::exception& e) {
printf("Unhandled exception:\n%s\n", e.what());
return 1;
}
}