1 files changed, 117 insertions, 0 deletions
diff --git a/src/lib/testutils/io_utils.cc b/src/lib/testutils/io_utils.cc
new file mode 100644
index 0000000..4b08f16
--- /dev/null
+++ b/src/lib/testutils/io_utils.cc
@@ -0,0 +1,117 @@
+// 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