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// Copyright (C) 2015-2017 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <exceptions/exceptions.h>
#include <testutils/io_utils.h>
#include <gtest/gtest.h>
#include <fstream>
#include <sstream>
#include <string>
namespace isc {
namespace test {
bool fileExists(const std::string& file_path) {
struct stat statbuf;
return(stat(file_path.c_str(), &statbuf) == 0);
}
std::string readFile(const std::string& file_path) {
std::ifstream ifs;
ifs.open(file_path.c_str(), std::ifstream::in);
if (!ifs.good()) {
return (std::string());
}
std::string buf;
std::ostringstream output;
while (!ifs.eof() && ifs.good()) {
ifs >> buf;
output << buf;
}
ifs.close();
return (output.str());
}
std::string decommentJSONfile(const std::string& input_file) {
using namespace std;
ifstream f(input_file);
if (!f.is_open()) {
isc_throw(isc::BadValue, "can't open input file for reading: " + input_file);
}
string outfile;
size_t last_slash = input_file.find_last_of("/");
if (last_slash != string::npos) {
outfile = input_file.substr(last_slash + 1);
} else {
outfile = input_file;
}
outfile += "-decommented";
ofstream out(outfile);
if (!out.is_open()) {
isc_throw(isc::BadValue, "can't open output file for writing: " + input_file);
}
bool in_comment = false;
string line;
while (std::getline(f, line)) {
// First, let's get rid of the # comments
size_t hash_pos = line.find("#");
if (hash_pos != string::npos) {
line = line.substr(0, hash_pos);
}
// Second, let's get rid of the // comments
// at the beginning or after a control character.
size_t dblslash_pos = line.find("//");
if ((dblslash_pos != string::npos) &&
((dblslash_pos == 0) ||
((unsigned) line[dblslash_pos - 1] <= 32))) {
line = line.substr(0, dblslash_pos);
}
// Now the tricky part: c comments.
size_t begin_pos = line.find("/*");
size_t end_pos = line.find("*/");
if (in_comment && end_pos == string::npos) {
// we continue through multiline comment
line = "";
} else {
if (begin_pos != string::npos) {
in_comment = true;
if (end_pos != string::npos) {
// single line comment. Let's get rid of the content in between
line = line.replace(begin_pos, end_pos + 2, end_pos + 2 - begin_pos, ' ');
in_comment = false;
} else {
line = line.substr(0, begin_pos);
}
} else {
if (in_comment && end_pos != string::npos) {
line = line.replace(0, end_pos +2 , end_pos + 2, ' ');
in_comment = false;
}
}
}
// Finally, write the line to the output file.
out << line << endl;
}
f.close();
out.close();
return (outfile);
}
}; // end of isc::test namespace
}; // end of isc namespace
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