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// Copyright 2015 The Weave Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <string>
#include <utility>
#include <vector>
namespace weave {
// Treats the string as a delimited list of substrings and returns the array
// of original elements of the list.
// |trim_whitespaces| causes each element to have all whitespaces trimmed off.
// |purge_empty_strings| specifies whether empty elements from the original
// string should be omitted.
std::vector<std::string> Split(const std::string& str,
const std::string& delimiter,
bool trim_whitespaces,
bool purge_empty_strings);
// Splits the string into two pieces at the first position of the specified
// delimiter.
std::pair<std::string, std::string> SplitAtFirst(const std::string& str,
const std::string& delimiter,
bool trim_whitespaces);
// Joins strings into a single string separated by |delimiter|.
template <class InputIterator>
std::string JoinRange(const std::string& delimiter,
InputIterator first,
InputIterator last) {
std::string result;
if (first == last)
return result;
result = *first;
for (++first; first != last; ++first) {
result += delimiter;
result += *first;
return result;
template <class Container>
std::string Join(const std::string& delimiter, const Container& strings) {
using std::begin;
using std::end;
return JoinRange(delimiter, begin(strings), end(strings));
inline std::string Join(const std::string& delimiter,
const std::string& str1,
const std::string& str2) {
return str1 + delimiter + str2;
} // namespace weave