diff options
| -rw-r--r-- | src/Makefile.am | 2 | ||||
| -rw-r--r-- | src/test/util_tests.cpp | 18 | ||||
| -rw-r--r-- | src/util/string.cpp | 5 | ||||
| -rw-r--r-- | src/util/string.h | 35 |
4 files changed, 58 insertions, 2 deletions
diff --git a/src/Makefile.am b/src/Makefile.am index 141d8e68ea..477b1300bc 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -211,6 +211,7 @@ BITCOIN_CORE_H = \ util/memory.h \ util/moneystr.h \ util/rbf.h \ + util/string.h \ util/threadnames.h \ util/time.h \ util/translation.h \ @@ -501,6 +502,7 @@ libbitcoin_util_a_SOURCES = \ util/rbf.cpp \ util/threadnames.cpp \ util/strencodings.cpp \ + util/string.cpp \ util/time.cpp \ util/url.cpp \ util/validation.cpp \ diff --git a/src/test/util_tests.cpp b/src/test/util_tests.cpp index 7119f56fc3..65cb956fbe 100644 --- a/src/test/util_tests.cpp +++ b/src/test/util_tests.cpp @@ -6,11 +6,12 @@ #include <clientversion.h> #include <sync.h> +#include <test/setup_common.h> #include <test/util.h> -#include <util/strencodings.h> #include <util/moneystr.h> +#include <util/strencodings.h> +#include <util/string.h> #include <util/time.h> -#include <test/setup_common.h> #include <stdint.h> #include <thread> @@ -123,6 +124,19 @@ BOOST_AUTO_TEST_CASE(util_HexStr) ); } +BOOST_AUTO_TEST_CASE(util_Join) +{ + // Normal version + BOOST_CHECK_EQUAL(Join({}, ", "), ""); + BOOST_CHECK_EQUAL(Join({"foo"}, ", "), "foo"); + BOOST_CHECK_EQUAL(Join({"foo", "bar"}, ", "), "foo, bar"); + + // Version with unary operator + const auto op_upper = [](const std::string& s) { return ToUpper(s); }; + BOOST_CHECK_EQUAL(Join<std::string>({}, ", ", op_upper), ""); + BOOST_CHECK_EQUAL(Join<std::string>({"foo"}, ", ", op_upper), "FOO"); + BOOST_CHECK_EQUAL(Join<std::string>({"foo", "bar"}, ", ", op_upper), "FOO, BAR"); +} BOOST_AUTO_TEST_CASE(util_FormatISO8601DateTime) { diff --git a/src/util/string.cpp b/src/util/string.cpp new file mode 100644 index 0000000000..8ea3a1afc6 --- /dev/null +++ b/src/util/string.cpp @@ -0,0 +1,5 @@ +// Copyright (c) 2019 The Bitcoin Core developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#include <util/string.h> diff --git a/src/util/string.h b/src/util/string.h new file mode 100644 index 0000000000..dec0c19b08 --- /dev/null +++ b/src/util/string.h @@ -0,0 +1,35 @@ +// Copyright (c) 2019 The Bitcoin Core developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#ifndef BITCOIN_UTIL_STRING_H +#define BITCOIN_UTIL_STRING_H + +#include <functional> +#include <string> +#include <vector> + +/** + * Join a list of items + * + * @param list The list to join + * @param separator The separator + * @param unary_op Apply this operator to each item in the list + */ +template <typename T, typename UnaryOp> +std::string Join(const std::vector<T>& list, const std::string& separator, UnaryOp unary_op) +{ + std::string ret; + for (size_t i = 0; i < list.size(); ++i) { + if (i > 0) ret += separator; + ret += unary_op(list.at(i)); + } + return ret; +} + +inline std::string Join(const std::vector<std::string>& list, const std::string& separator) +{ + return Join(list, separator, [](const std::string& i) { return i; }); +} + +#endif // BITCOIN_UTIL_STRENCODINGS_H |