mirror of
https://github.com/XRPLF/rippled.git
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184 lines
4.6 KiB
C++
184 lines
4.6 KiB
C++
#include <xrpl/basics/BasicConfig.h>
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#include <xrpl/basics/StringUtilities.h>
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#include <boost/regex/v5/regbase.hpp>
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#include <boost/regex/v5/regex.hpp>
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#include <boost/regex/v5/regex_fwd.hpp>
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#include <boost/regex/v5/regex_match.hpp>
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#include <ostream>
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#include <string>
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#include <tuple>
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#include <utility>
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#include <vector>
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namespace xrpl {
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Section::Section(std::string const& name) : name_(name)
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{
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}
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void
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Section::set(std::string const& key, std::string const& value)
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{
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lookup_.insert_or_assign(key, value);
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}
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void
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Section::append(std::vector<std::string> const& lines)
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{
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// <key> '=' <value>
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static boost::regex const re1(
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"^" // start of line
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"(?:\\s*)" // whitespace (optional)
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"([a-zA-Z][_a-zA-Z0-9]*)" // <key>
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"(?:\\s*)" // whitespace (optional)
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"(?:=)" // '='
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"(?:\\s*)" // whitespace (optional)
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"(.*\\S+)" // <value>
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"(?:\\s*)" // whitespace (optional)
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,
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boost::regex_constants::optimize);
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lines_.reserve(lines_.size() + lines.size());
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for (auto line : lines)
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{
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auto remove_comment = [](std::string& val) -> bool {
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bool removed_trailing = false;
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auto comment = val.find('#');
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while (comment != std::string::npos)
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{
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if (comment == 0)
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{
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// entire value is a comment. In most cases, this
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// would have already been handled by the file reader
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val = "";
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break;
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}
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if (val.at(comment - 1) == '\\')
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{
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// we have an escaped comment char. Erase the escape char
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// and keep looking
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val.erase(comment - 1, 1);
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}
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else
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{
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// this must be a real comment. Extract the value
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// as a substring and stop looking.
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val = trim_whitespace(val.substr(0, comment));
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removed_trailing = true;
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break;
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}
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comment = val.find('#', comment);
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}
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return removed_trailing;
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};
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if (remove_comment(line) && !line.empty())
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had_trailing_comments_ = true;
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if (line.empty())
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continue;
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boost::smatch match;
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if (boost::regex_match(line, match, re1))
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{
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set(match[1], match[2]);
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}
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else
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{
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values_.push_back(line);
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}
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lines_.push_back(std::move(line));
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}
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}
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bool
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Section::exists(std::string const& name) const
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{
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return lookup_.contains(name);
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}
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std::ostream&
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operator<<(std::ostream& os, Section const& section)
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{
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for (auto const& [k, v] : section.lookup_)
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os << k << "=" << v << "\n";
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return os;
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}
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//------------------------------------------------------------------------------
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bool
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BasicConfig::exists(std::string const& name) const
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{
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return map_.contains(name);
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}
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Section&
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BasicConfig::section(std::string const& name)
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{
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return map_.emplace(name, name).first->second;
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}
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Section const&
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BasicConfig::section(std::string const& name) const
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{
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static Section const none("");
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auto const iter = map_.find(name);
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if (iter == map_.end())
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return none;
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return iter->second;
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}
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void
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BasicConfig::overwrite(std::string const& section, std::string const& key, std::string const& value)
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{
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auto const result =
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map_.emplace(std::piecewise_construct, std::make_tuple(section), std::make_tuple(section));
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result.first->second.set(key, value);
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}
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void
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BasicConfig::deprecatedClearSection(std::string const& section)
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{
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auto i = map_.find(section);
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if (i != map_.end())
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i->second = Section(section);
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}
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void
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BasicConfig::legacy(std::string const& section, std::string value)
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{
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map_.emplace(section, section).first->second.legacy(std::move(value));
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}
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std::string
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BasicConfig::legacy(std::string const& sectionName) const
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{
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return section(sectionName).legacy();
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}
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void
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BasicConfig::build(IniFileSections const& ifs)
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{
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for (auto const& entry : ifs)
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{
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auto const result = map_.emplace(
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std::piecewise_construct, std::make_tuple(entry.first), std::make_tuple(entry.first));
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result.first->second.append(entry.second);
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}
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}
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std::ostream&
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operator<<(std::ostream& ss, BasicConfig const& c)
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{
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for (auto const& [k, v] : c.map_)
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ss << "[" << k << "]\n" << v;
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return ss;
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}
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} // namespace xrpl
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