Update develop (#5)

* refactor

host/online_compile/include/stringutils.hpp

@@ -0,0 +1,133 @@
+/*******************************************************************************
+ *
+ * MIT License
+ *
+ * Copyright (c) 2017 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ *******************************************************************************/
+#ifndef GUARD_OLC_STRINGUTILS_HPP
+#define GUARD_OLC_STRINGUTILS_HPP
+
+#include <algorithm>
+#include <iterator>
+#include <numeric>
+#include <string>
+#include <vector>
+#include <sstream>
+
+#define OLC_STRINGIZE_1(...) #__VA_ARGS__
+#define OLC_STRINGIZE(...) OLC_STRINGIZE_1(__VA_ARGS__)
+
+namespace online_compile {
+
+inline std::string
+ReplaceString(std::string subject, const std::string& search, const std::string& replace)
+{
+    size_t pos = 0;
+    while((pos = subject.find(search, pos)) != std::string::npos)
+    {
+        subject.replace(pos, search.length(), replace);
+        pos += replace.length();
+    }
+    return subject;
+}
+
+inline bool EndsWith(const std::string& value, const std::string& suffix)
+{
+    if(suffix.size() > value.size())
+        return false;
+    else
+        return std::equal(suffix.rbegin(), suffix.rend(), value.rbegin());
+}
+
+template <class Strings>
+inline std::string JoinStrings(Strings strings, std::string delim)
+{
+    auto it = strings.begin();
+    if(it == strings.end())
+        return "";
+
+    auto nit = std::next(it);
+    return std::accumulate(
+        nit, strings.end(), *it, [&](std::string x, std::string y) { return x + delim + y; });
+}
+
+template <class F>
+static inline std::string TransformString(std::string s, F f)
+{
+    std::transform(s.begin(), s.end(), s.begin(), f);
+    return s;
+}
+
+inline std::string ToUpper(std::string s) { return TransformString(std::move(s), ::toupper); }
+
+inline bool StartsWith(const std::string& value, const std::string& prefix)
+{
+    if(prefix.size() > value.size())
+        return false;
+    else
+        return std::equal(prefix.begin(), prefix.end(), value.begin());
+}
+
+inline std::string RemovePrefix(std::string s, std::string prefix)
+{
+    if(StartsWith(s, prefix))
+        return s.substr(prefix.length());
+    else
+        return s;
+}
+
+inline std::vector<std::string> SplitSpaceSeparated(const std::string& in)
+{
+    std::istringstream ss(in);
+    std::istream_iterator<std::string> begin(ss), end;
+    return {begin, end};
+}
+
+inline std::vector<std::string> SplitSpaceSeparated(const std::string& in,
+                                                    const std::vector<std::string>& dontSplitAfter)
+{
+    std::vector<std::string> rv;
+    std::istringstream ss(in);
+    std::string s;
+    while(ss >> s)
+    {
+        if(std::any_of(dontSplitAfter.begin(), dontSplitAfter.end(), [&](const auto& dont) {
+               return dont == s;
+           }))
+        {
+            std::string s2;
+            if(ss >> s2)
+            {
+                s += std::string(" ").append(s2); // Exactly one space is important.
+                rv.push_back(s);
+                continue;
+            }
+            throw std::runtime_error("Error parsing string: '" + in + '\'');
+        }
+        rv.push_back(s);
+    }
+    return rv;
+}
+
+} // namespace online_compile
+
+#endif // GUARD_OLC_STRINGUTILS_HPP