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1d42c4f6de
Per XLS-0095, we are taking steps to rename ripple(d) to xrpl(d). This change specifically removes all copyright notices referencing Ripple, XRPLF, and certain affiliated contributors upon mutual agreement, so the notice in the LICENSE.md file applies throughout. Copyright notices referencing external contributions remain as-is. Duplicate verbiage is also removed.
91 lines
2.0 KiB
C++
91 lines
2.0 KiB
C++
#ifndef JOIN_H_INCLUDED
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#define JOIN_H_INCLUDED
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#include <string>
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namespace ripple {
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template <class Stream, class Iter>
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Stream&
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join(Stream& s, Iter iter, Iter end, std::string const& delimiter)
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{
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if (iter == end)
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return s;
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s << *iter;
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for (++iter; iter != end; ++iter)
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s << delimiter << *iter;
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return s;
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}
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template <class Collection>
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class CollectionAndDelimiter
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{
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public:
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Collection const& collection;
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std::string const delimiter;
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explicit CollectionAndDelimiter(Collection const& c, std::string delim)
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: collection(c), delimiter(std::move(delim))
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{
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}
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template <class Stream>
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friend Stream&
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operator<<(Stream& s, CollectionAndDelimiter const& cd)
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{
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return join(
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s,
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std::begin(cd.collection),
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std::end(cd.collection),
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cd.delimiter);
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}
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};
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template <class Collection, std::size_t N>
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class CollectionAndDelimiter<Collection[N]>
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{
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public:
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Collection const* collection;
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std::string const delimiter;
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explicit CollectionAndDelimiter(Collection const c[N], std::string delim)
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: collection(c), delimiter(std::move(delim))
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{
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}
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template <class Stream>
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friend Stream&
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operator<<(Stream& s, CollectionAndDelimiter const& cd)
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{
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return join(s, cd.collection, cd.collection + N, cd.delimiter);
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}
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};
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// Specialization for const char* strings
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template <std::size_t N>
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class CollectionAndDelimiter<char[N]>
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{
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public:
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char const* collection;
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std::string const delimiter;
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explicit CollectionAndDelimiter(char const c[N], std::string delim)
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: collection(c), delimiter(std::move(delim))
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{
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}
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template <class Stream>
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friend Stream&
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operator<<(Stream& s, CollectionAndDelimiter const& cd)
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{
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auto end = cd.collection + N;
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if (N > 0 && *(end - 1) == '\0')
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--end;
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return join(s, cd.collection, end, cd.delimiter);
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}
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};
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} // namespace ripple
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#endif
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