Cleanup: Combine Section and BasicConfig, move to basics

src/ripple/basics/impl/BasicConfig.cpp

@@ -0,0 +1,147 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2012, 2013 Ripple Labs Inc.
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#include <ripple/basics/BasicConfig.h>
+#include <boost/regex.hpp>
+#include <algorithm>
+
+namespace ripple {
+
+void
+Section::set (std::string const& key, std::string const& value)
+{
+    auto const result = map_.emplace (key, value);
+    if (! result.second)
+        result.first->second = value;
+}
+
+void
+Section::append (std::string const& line)
+{
+    // <key> '=' <value>
+    static boost::regex const re1 (
+        "^"                         // start of line
+        "(?:\\s*)"                  // whitespace (optonal)
+        "([a-zA-Z][_a-zA-Z0-9]*)"   // <key>
+        "(?:\\s*)"                  // whitespace (optional)
+        "(?:=)"                     // '='
+        "(?:\\s*)"                  // whitespace (optional)
+        "(.*\\S+)"                  // <value>
+        "(?:\\s*)"                  // whitespace (optional)
+        , boost::regex_constants::optimize
+    );
+
+    boost::smatch match;
+    lines_.push_back (line);
+    if (boost::regex_match (line, match, re1))
+        set (match[1], match[2]);
+}
+
+void
+Section::append (std::vector <std::string> const& lines)
+{
+    lines_.reserve (lines_.size() + lines.size());
+    std::for_each (lines.begin(), lines.end(),
+        [&](std::string const& line) { this->append (line); });
+}
+
+bool
+Section::exists (std::string const& name) const
+{
+    return map_.find (name) != map_.end();
+}
+
+std::pair <std::string, bool>
+Section::find (std::string const& name) const
+{
+    auto const iter = map_.find (name);
+    if (iter == map_.end())
+        return {{}, false};
+    return {iter->second, true};
+}
+
+std::ostream&
+operator<< (std::ostream& os, Section const& section)
+{
+    for (auto const& kv : section.map_)
+        os << kv.first << "=" << kv.second << "\n";
+    return os;
+}
+
+//------------------------------------------------------------------------------
+
+bool
+BasicConfig::exists (std::string const& name) const
+{
+    return map_.find (name) != map_.end();
+}
+
+Section const&
+BasicConfig::section (std::string const& name) const
+{
+    static Section none;
+    auto const iter = map_.find (name);
+    if (iter == map_.end())
+        return none;
+    return iter->second;
+}
+
+void
+BasicConfig::remap (std::string const& legacy_section,
+    std::string const& key, std::string const& new_section)
+{
+    auto const iter = map_.find (legacy_section);
+    if (iter == map_.end())
+        return;
+    if (iter->second.keys() != 0)
+        return;
+    if (iter->second.lines().size() != 1)
+        return;
+    auto& s = map_[new_section];
+    s.append (iter->second.lines().front());
+    s.set (key, iter->second.lines().front());
+}
+
+void
+BasicConfig::overwrite (std::string const& section, std::string const& key,
+    std::string const& value)
+{
+    auto const result = map_.emplace (section, Section{});
+    result.first->second.set (key, value);
+}
+
+void
+BasicConfig::build (IniFileSections const& ifs)
+{
+    for (auto const& entry : ifs)
+    {
+        auto const result = map_.emplace (entry.first, Section{});
+        result.first->second.append (entry.second);
+    }
+}
+
+std::ostream&
+operator<< (std::ostream& ss, BasicConfig const& c)
+{
+    for (auto const& s : c.map_)
+        ss << "[" << s.first << "]\n" << s.second;
+    return ss;
+}
+
+} // ripple