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cpp-utilities
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Add simplified, string_view-compatible version of splitString()

This commit is contained in:
Martchus 2018-02-28 18:03:07 +01:00
parent 8a83870ac7
commit da5a027ea3
3 changed files with 33 additions and 2 deletions
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4
CMakeLists.txt
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@ -131,8 +131,8 @@ set(META_APP_AUTHOR "Martchus")
set(META_APP_URL "https://github.com/${META_APP_AUTHOR}/${META_PROJECT_NAME}")
set(META_APP_DESCRIPTION "Useful C++ classes and routines such as argument parser, IO and conversion utilities")
set(META_VERSION_MAJOR 4)
set(META_VERSION_MINOR 12)
set(META_VERSION_PATCH 2)
set(META_VERSION_MINOR 13)
set(META_VERSION_PATCH 0)
# find required 3rd party libraries
include(3rdParty)

27
conversion/stringconversion.h
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@ -158,6 +158,33 @@ Container splitString(const typename Container::value_type &string, const typena
return res;
}
/*!
* \brief Splits the given \a string (which might also be a string view) at the specified \a delimiter.
* \param string The string to be splitted.
* \param delimiter Specifies the delimiter.
* \param maxParts Specifies the maximal number of parts. Values less or equal zero indicate an unlimited number of parts.
* \tparam Container The STL-container used to return the parts.
* \returns Returns the parts.
* \remarks This is a simplified version of splitString() where emptyPartsRole is always EmptyPartsTreat::Keep.
*/
template <class Container = std::list<std::string>>
Container splitStringSimple(const typename Container::value_type &string, const typename Container::value_type &delimiter, int maxParts = -1)
{
--maxParts;
Container res;
for (typename Container::value_type::size_type i = 0, end = string.size(), delimPos; i < end; i = delimPos + delimiter.size()) {
delimPos = string.find(delimiter, i);
if (maxParts >= 0 && res.size() == static_cast<typename Container::value_type::size_type>(maxParts)) {
delimPos = Container::value_type::npos;
}
if (delimPos == Container::value_type::npos) {
delimPos = string.size();
}
res.emplace_back(string.substr(i, delimPos - i));
}
return res;
}
/*!
* \brief Converts the specified \a multilineString to an array of lines.
*/

4
tests/conversiontests.cpp
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@ -290,6 +290,8 @@ void ConversionTests::testStringConversions()
vector<string> splitTestExpected({ "1", "2,3" });
vector<string> splitTestActual = splitString<vector<string>>("1,2,3"s, ","s, EmptyPartsTreat::Keep, 2);
CPPUNIT_ASSERT_EQUAL(splitTestExpected, splitTestActual);
splitTestActual = splitStringSimple<vector<string>>("1,2,3"s, ","s, 2);
CPPUNIT_ASSERT_EQUAL(splitTestExpected, splitTestActual);
splitTestExpected = { "1", "2,3", "4,,5" };
splitTestActual = splitString<vector<string>>("1,2,,3,4,,5"s, ","s, EmptyPartsTreat::Merge, 3);
CPPUNIT_ASSERT_EQUAL(splitTestExpected, splitTestActual);
@ -297,6 +299,8 @@ void ConversionTests::testStringConversions()
CPPUNIT_ASSERT_EQUAL("() (a) () (ab) (ABC) (s)"s, splitJoinTest);
splitJoinTest = joinStrings(splitString<vector<string>>(",a,,ab,ABC,s"s, ","s, EmptyPartsTreat::Keep), " "s, true, "("s, ")"s);
CPPUNIT_ASSERT_EQUAL("(a) (ab) (ABC) (s)"s, splitJoinTest);
splitJoinTest = joinStrings(splitStringSimple<vector<string>>(",a,,ab,ABC,s"s, ","s), " "s, true, "("s, ")"s);
CPPUNIT_ASSERT_EQUAL("(a) (ab) (ABC) (s)"s, splitJoinTest);
splitJoinTest = joinStrings(splitString<vector<string>>(",a,,ab,ABC,s"s, ","s, EmptyPartsTreat::Omit), " "s, false, "("s, ")"s);
CPPUNIT_ASSERT_EQUAL("(a) (ab) (ABC) (s)"s, splitJoinTest);
splitJoinTest = joinStrings(splitString<vector<string>>(",a,,ab,ABC,s"s, ","s, EmptyPartsTreat::Merge), " "s, false, "("s, ")"s);