catch2/src/catch2/internal/catch_string_manip.cpp

110 lines
3.8 KiB
C++

/*
* Created by Martin on 25/07/2017.
*
* Distributed under the Boost Software License, Version 1.0. (See accompanying
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*/
#include <catch2/internal/catch_string_manip.hpp>
#include <catch2/internal/catch_stringref.hpp>
#include <algorithm>
#include <ostream>
#include <cstring>
#include <cctype>
#include <vector>
namespace Catch {
namespace {
char toLowerCh(char c) {
return static_cast<char>( std::tolower( static_cast<unsigned char>(c) ) );
}
}
bool startsWith( std::string const& s, std::string const& prefix ) {
return s.size() >= prefix.size() && std::equal(prefix.begin(), prefix.end(), s.begin());
}
bool startsWith( std::string const& s, char prefix ) {
return !s.empty() && s[0] == prefix;
}
bool endsWith( std::string const& s, std::string const& suffix ) {
return s.size() >= suffix.size() && std::equal(suffix.rbegin(), suffix.rend(), s.rbegin());
}
bool endsWith( std::string const& s, char suffix ) {
return !s.empty() && s[s.size()-1] == suffix;
}
bool contains( std::string const& s, std::string const& infix ) {
return s.find( infix ) != std::string::npos;
}
void toLowerInPlace( std::string& s ) {
std::transform( s.begin(), s.end(), s.begin(), toLowerCh );
}
std::string toLower( std::string const& s ) {
std::string lc = s;
toLowerInPlace( lc );
return lc;
}
std::string trim( std::string const& str ) {
static char const* whitespaceChars = "\n\r\t ";
std::string::size_type start = str.find_first_not_of( whitespaceChars );
std::string::size_type end = str.find_last_not_of( whitespaceChars );
return start != std::string::npos ? str.substr( start, 1+end-start ) : std::string();
}
StringRef trim(StringRef ref) {
const auto is_ws = [](char c) {
return c == ' ' || c == '\t' || c == '\n' || c == '\r';
};
size_t real_begin = 0;
while (real_begin < ref.size() && is_ws(ref[real_begin])) { ++real_begin; }
size_t real_end = ref.size();
while (real_end > real_begin && is_ws(ref[real_end - 1])) { --real_end; }
return ref.substr(real_begin, real_end - real_begin);
}
bool replaceInPlace( std::string& str, std::string const& replaceThis, std::string const& withThis ) {
bool replaced = false;
std::size_t i = str.find( replaceThis );
while( i != std::string::npos ) {
replaced = true;
str = str.substr( 0, i ) + withThis + str.substr( i+replaceThis.size() );
if( i < str.size()-withThis.size() )
i = str.find( replaceThis, i+withThis.size() );
else
i = std::string::npos;
}
return replaced;
}
std::vector<StringRef> splitStringRef( StringRef str, char delimiter ) {
std::vector<StringRef> subStrings;
std::size_t start = 0;
for(std::size_t pos = 0; pos < str.size(); ++pos ) {
if( str[pos] == delimiter ) {
if( pos - start > 1 )
subStrings.push_back( str.substr( start, pos-start ) );
start = pos+1;
}
}
if( start < str.size() )
subStrings.push_back( str.substr( start, str.size()-start ) );
return subStrings;
}
pluralise::pluralise( std::size_t count, std::string const& label )
: m_count( count ),
m_label( label )
{}
std::ostream& operator << ( std::ostream& os, pluralise const& pluraliser ) {
os << pluraliser.m_count << ' ' << pluraliser.m_label;
if( pluraliser.m_count != 1 )
os << 's';
return os;
}
}