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Multi-char delimiter string splitting.

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ADAM David Alan Martin
2023-10-29 05:57:11 -04:00
parent 2bd71cdfcf
commit 4d88f7cb75
3 changed files with 36 additions and 1 deletions
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15
string_algorithms.cpp
View File

@ -151,4 +151,19 @@ namespace Alepha::Hydrogen ::detail:: string_algorithms
rv.push_back( std::move( next ) );
return rv;
}
std::vector< std::string >
exports::split( std::string s, const std::string &delim )
{
std::vector< std::string > rv;
while( true )
{
const auto pos= s.find( delim );
rv.push_back( s.substr( 0, pos ) );
if( pos == std::string::npos ) break;
s= s.substr( pos + delim.size() );
}
return rv;
}
}

2
string_algorithms.h
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@ -75,6 +75,8 @@ namespace Alepha::Hydrogen ::detail:: string_algorithms
std::vector< std::string > split( const std::string &s, char token );
std::vector< std::string > split( std::string s, const std::string &delim );
/*!
* Parses an integral range description into a vector of values.
*/

20
string_algorithms.test/0.cc
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@ -50,11 +50,29 @@ static auto init= enroll <=[]
},
};
"Does the `split` function handle simple cases correctly?"_test <=TableTest< Alepha::split >::Cases
"Does the `split` function handle simple cases correctly?"_test <=TableTest
<
[] ( const std::string text, const char delim ) { return Alepha::split( text, delim ); }
>
::Cases
{
{ "Empty string", { "", ':' }, { "" } },
{ "Single token", { "item", ':' }, { "item" } },
{ "Two tokens", { "first:second", ':' }, { "first", "second" } },
{ "Empty string many tokens", { ":::", ':' }, { "", "", "", "" } },
};
"Does the `split` function over multi-token-delimiters handle simple cases correctly?"_test <=TableTest
<
[] ( const std::string text, const std::string delim ) { return Alepha::split( text, delim ); }
>
::Cases
{
{ "Empty string", { "", "::" }, { "" } },
{ "Single token", { "item", "::" }, { "item" } },
{ "Two tokens", { "first::second", "::" }, { "first", "second" } },
{ "Empty string many tokens", { "::::::", "::" }, { "", "", "", "" } },
{ "Alphabet string many tokens", { "a::b::c::d", "::" }, { "a", "b", "c", "d" } },
{ "Alphabet string many tokens", { "::a::b::c::d::", "::" }, { "", "a", "b", "c", "d", "" } },
};
};